Contractors engaged in general excavation work for others that is not covered by another classification (N.O.C.);

Clearing right of ways for subsurface construction on a new or existing highway, street or roadway project that is not covered by another classification (N.O.C.);

Clearing right of ways for subsurface construction on a new or existing airport landing strip, runway, and taxi way;

Clearing right of ways for alley and parking lot projects;

General land clearing work that is not covered by another classification (N.O.C.); and

Contractors engaged in the excavation of pools or ponds.

• Backfilling;

• Bringing the roadbed or project site to grade;

• Clearing or scraping land of vegetation;

• Cut and fill work;

• Earth excavation;

• Excavation or digging of earth to form the hole for pools, ponds, building foundations, and side sewer hookups (street to house) when performed as part of the excavation contract;

• Excavation of rocks and boulders;

• Grubbing;

• Piling or pushing of earth;

• Placement of plastic pool and pond liners not in connection with concrete work;

• Removal of tree stumps; and

• Slope grooming.

• Backhoes;

• Bulldozers;

• Dump trucks;

• Frontend loaders;

• Graders;

• Rollers;

• Shovels; and

• Scrapers.

• Worker hours engaged in asphalt surfacing or resurfacing on roadways are reported separately in classification 0210;

• Worker hours engaged in construction specialty services such as the installation of guardrails, lighting standards, and striping are reported separately in classification 0219;

• Worker hours engaged in bridge or tunnel construction, including the abutments and approaches are reported separately in classification 0201;

• Worker hours engaged in logging road construction are reported separately in classification 6902;

• Worker hours engaged in concrete construction are reported separately in the applicable concrete construction classification; and

• Worker hours engaged in felling of trees which must be reported separately in the applicable logging classification.

• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.

• Classification 0101 is a construction industry classification (see WAC 296-17-31013).

Contractors engaged in various forms of grading work for others that are not covered by another classification (N.O.C.).

• Leveling and grading lands; and

• Spreading dirt, sand, gravel, and ballast to desired contour.

• Bulldozers;

• Backhoes;

• Dump trucks;

• Frontend loaders;

• Graders; and

• Rollers.

• Classification 0101 is a construction industry classification (see WAC 296-17-31013).

Contractors engaged in the construction, maintenance and repair of railroad tracks not covered by another classification (N.O.C.), including the dismantling of track and the sale of salvaged track metal and ties.

• Laying of rock and ballast;

• Laying of ties and track;

• Installing crossover frogs and switches;

• Erecting switch stands and switch mechanisms;

• Erecting cattle guards;

• Placing grade crossing planks;

• Similar activities related to laying or relaying railroad lines; and

• Dismantling railroad main lines, side tracks, and spurs and the subsequent storage and sale of salvaged material after the railroad line is dismantled.

• Anchor spreaders;

• Grinders;

• Hi-Rail trucks and other vehicles that can operate both on rail tracks and conventional roads;

• New track construction (NTC) machines;

• Rail spikers; and

• Tie equipment.

• Worker hours engaged in asphalt surfacing/resurfacing and all concrete construction work are reported separately in the applicable asphalt and concrete construction classifications;

• Worker hours engaged in logging railroad construction are reported separately in classification 6902; and

• Worker hours engaged in construction, maintenance, or repair of an elevated railway are reported separately in classification 0508.

• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.

• Classification 0101 is a construction industry classification (see WAC 296-17-31013).

Contractors engaged in the construction or repair of retaining walls in connection with highway, street, or roadway projects that are not covered by another classification (N.O.C.).

• Backfilling;

• Clearing;

• Concrete pouring;

• Contouring;

• Cut and fill work;

• Excavation;

• Grading;

• Large block placement; and

• Slope grooming.

• Boulders;

• Dirt;

• Sand; and

• Stone.

• Backhoes;

• Bulldozers;

• Dump trucks;

• Graders; and

• Scrapers.

• Worker hours engaged in asphalt surfacing or resurfacing on roadways are reported separately in classification 0210;

• Worker hours engaged in concrete construction are reported separately in the applicable concrete construction classification;

• Worker hours engaged in construction specialty services such as the installation of guardrails, lighting standards, and striping are reported separately in classification 0219;

• Worker hours engaged in bridge or tunnel construction including abutments and approaches, lining, cofferdam work, shaft sinking, and well digging with caissons are reported separately in classification 0201;

• Worker hours engaged in felling of trees which must be reported separately in the applicable logging classification; and

• Worker hours engaged in logging road construction are reported separately in classification 6902.

• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.

• Classification 0101 is a construction industry classification (see WAC 296-17-31013).

Businesses engaged in various types of remediation of soil contaminated with hazardous or toxic materials, including oil spill cleanup on land.

• Backhoes;

• Bulldozers;

• Dump trucks;

• Frontend loaders;

• Other dirt moving equipment;

• Tillers; and

• Incinerators.

• Bio-remediation: Contaminated soil is mixed with nutrients, sawdust, and various other additives. Naturally occurring bacteria in the soil break down the pollutants;

• Encapsulation: Contaminated soil is enclosed in some type of protective material to prevent drainage into surrounding soil;

• Excavation and hauling to an approved disposal site;

• Hot air vapor extraction: A burner unit is mounted on a trailer. Contaminated soil is arranged in layers on which an aluminum perforated pipe system is placed at 2 foot intervals, with a return pipe on the top layer. The soil stack is enclosed in visqueen, then hot air is pumped into the piping system which creates the steam that is recycled through the system and carries the contaminants back through the catalytic burner. Because of the catalytic action there are virtually no contaminants exhausted into the atmosphere;

• In situ vitrification: Graphite electrodes are fed into contaminated soil at a specified rate, where high voltage "melts" the organic and inorganic materials in the soil and forms a solid, glasslike substance;

• Land farming: Contaminated soil is deposited and spread out by a farm type spreader on an area of ground dedicated for this purpose. Chemical or manure fertilizer is added to provide a medium for naturally occurring bacteria to thrive. (This part is similar to bio-remediation.) The soil is turned frequently by tillers or rototillers to assist in the aeration of the soil and in the growth of the bacteria. It may take anywhere from a month to two years to cleanse the soil, depending on the volatility of the contaminants. This method is used particularly with soil that is heavily contaminated with oil;

• Mobile incineration: Contaminated soil is loaded onto a conveyor belt which carries it into the hopper of a mobile unit mounted on a lowboy trailer. The unit is heated to burn off the contaminants in the soil. The mobile unit contains a type of dust-collecting mechanism which filters out gases and other nondesirable elements so only clean air enters the atmosphere as the refreshed soil is produced. There are various methods of mobile incineration, but the general process and the end result are similar;

• Soil vapor extraction: A series of holes are bored in the ground and vacuum pumps are used to suck the trapped gases which are drawn through carbon filters for decontamination;

• Stabilization: Concrete landfill cells are created by mixing cement with refuse or other contaminated soil to stabilize the material and reduce the seepage into the surrounding soil; and

• Thermal disabsorption: A process similar to mobile incineration.

• Worker hours engaged in oil spill cleanup involving diking or ditching work are reported separately in classification 0201.

• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.

• Classification 0101 is a construction industry classification (see WAC 296-17-31013).

Contractors engaged in mowing, grooming, picking up litter, and chemical spraying of roadway median strips and edges, roadsides, and power line right of ways.

• Chemical spraying;

• Grooming;

• Mowing; and

• Picking up litter.

• Backhoes;

• Brush mowers;

• Chemical sprayers;

• Machetes;

• Mowers;

• Pruners;

• Push mowers;

• Sickles;

• Tractors; and

• Weed eaters.

• Mowing and grooming of roadway median strips, roadsides, and power line right of ways when performed by employees of cities, counties, state agencies, or other municipalities are classified in the classification applicable to the type of municipality performing the work;

• Worker hours engaged in forest, timber, and range land contract work are reported separately in the classification applicable to the work being performed; and

• Worker hours engaged in felling of trees which must be reported separately in the applicable logging classification.

• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.

• Classification 0101 is a construction industry classification (see WAC 296-17-31013).

• Businesses engaged in drilling operations for others not covered by another classification (N.O.C.); and

• Blasting operations not covered by another classification (such as the blasting of rock in connection with highway, street, or road construction).

• Drilling of holes in rock for shot holes;

• Exploratory well drilling; and

• Well drilling for oil, gas, or water.

• Digging holes using equipment.

• Auger drills;

• Bits (size will vary depending upon the terrain or material to be drilled and the depth and size of holes to be drilled);

• Drilling rigs; and

• Jackhammers.

• Drilling operations performed in connection with concrete or building construction is classified in the construction classification applicable for the work being performed;

• Drilling done in connection with all types of underground or surface mining and quarry operations is classified in the applicable mining classification;

• Blasting performed as part of building demolition is classified in 0518; and

• Pile construction is classified in:

0202-02, Pile construction: Driven method; or

0202-06, Pile construction: Drilled method.

Businesses engaged in geophysical exploration, by seismic detection, of the earth's subsurface.

• Computer analyst;

• Drillers;

• Observers;

• Permit person;

• Shooters;

• Surveyors; and

• Party chief.

• Using the seismic detection method - dynamite blasts simulate miniature earthquakes. Earthquake detectors record the vibrations.

• Taking photographic records.

• Interpreting the data collected to develop a contour map of the rocks and their foundation, often to depths of several thousand feet.

• Geophysical exploration without seismic detection is classified in 1007.

Businesses engaged in providing dredging services to others that are not covered by another classification (N.O.C.).

• Cleaning, deepening, or widening a body of water such as a harbor or other waterway;

• The dredging process removes sand, clay, mud, or other material from the body of water that is being dredged.

• Scooping dredges;

• Suction dredges.

• Worker hours engaged in diving operations must be reported separately in classification 0202;

• Underground mining operations are classified in 1702; and

• Dredging for the production of sand, gravel, or shale is classified in 0112.

Special note: Dredging projects could occur on or adjacent to navigable waters (a harbor, river, canal) which is defined as those which form a continuous highway for interstate or international commerce. Workers who perform the work activities from a vessel could be subject to the Admiralty Law which recognizes such work crews and workers as a master or member of a vessel, and subject to federal law known as the Jones Act. Every person on board a vessel is deemed a seaman if connected with the operation while on navigable water. The term vessel has been interpreted by the courts to include any type of man-made floating object such as a floating derrick or dredge, or type of pontoon which is a flat bottom boat or portable float. Workers who perform the work activities from the shoreline or from adjacent areas such as an existing dock or bridge may or may not be subject to federal law covered under the U.S. Longshore and Harbor Workers Act. Usually, dredging projects involve a variety of types of work crews such as those working from a floating derrick or dredge, a pontoon, a shoreline dredge, workers who are on shore distributing the discharged material, as well as the maintenance and repair of the dredge and equipment. Care should be exercised prior to assignment of this classification as the workers could be subject to either or both of these acts. The criteria used in determining federal law and coverage is based on the most current federal court decisions and case law.

• Erection and repair of all types of metal, wood, plastic, or vinyl fences not covered by another classification (N.O.C.);

• Installation or removal of entire parking meter units; and

• Placement of wire mesh on slopes for slop protection.

• Use of tractor with a propelled auger;

• Use of mechanical or manual post hole digger;

• Setting poles or posts into the ground with sand, gravel, or concrete; and

• Pouring a concrete footing around the perimeter of the fence to be constructed. Work of this nature, when done in connection with a fence construction project, is included within the scope of this classification.

• Erection or repair of brick, masonry or stone fences, or planters are classified in 0302;

• Erection or repair of concrete fences or planters are classified in 0217; and

• Service or repair of parking meters is classified in 0606.

Special note: It is common for contractors subject to this classification to sell kennel kits, fence repair parts and fencing materials. Sales of fencing materials by a fence contractor are included in classification 0105. Classifications 2009, 6309 or similar store classifications are not to be assigned to a contracting business.

Specialist contractors engaged in providing a variety of tree care services such as tree topping and tree pruning that are not covered by another classification (N.O.C).

A primary purpose of this work is to remove tree or branch hazards from power lines, structures, or buildings.

• Business parks;

• Parking lots;

• Residential areas;

• Settings adjacent to nonforestry or timberland roadways;

• Shopping malls.

• Incidental ground operations such as picking up branches and limbs;

• Operating mobile chip machines used in connection with a tree care service;

• Spraying or fumigating of trees;

• Debris removal and stump removal when conducted by employees of an employer subject to the classification.

• Tree care services done in connection with an orchard operation is classified in 4803, when performed by orchard employees;

• Tree care services done in connection with a nursery operation is classified in 4805;

• Tree care services done in connection with a public or private forest or timberland is classified in 5004;

• Tree care services done in connection with a Christmas tree farm operation is classified in 7307; and

• Worker hours engaged in felling trees are reported separately in classification 5001.

Contractors engaged in underground utility line or cable construction.

• Installation and maintenance of underground communication and power lines, including main, extension and outside service connection lines by utility contractors;

• Laying line or cable;

• Digging, filling or backfilling trenches.

• Automatic equipment, which in one operation opens the trench, lays the line and backfills;

• Backhoes;

• Dump trucks;

• Mechanical or manual trench diggers.

• Land or road clearing and excavation are classified in 0101.

• Overhead television, power, or telephone lines including poles or towers are classified in 0509 or the applicable utility business classification.

• Asphalt surfacing/resurfacing is classified in 0210 or 0212.

• Concrete construction is classified in the applicable concrete construction classification(s).

• Construction specialty services including the installation of guardrails, lighting standards and striping are classified in 0219.

• Installation and hookup of electrical wiring from where the utility company's lines end to the structure's power meter by the contractor wiring a building are classified in 0601.

• Construction of sewer lines, drainage systems, canals, ditches, or underground tanks are classified in 0108.

• Installation of cable in buildings is classified in 0601.

• Laying pipe or pipeline construction is classified in 0107-01.

Contractors laying pipe or pipeline construction.

• Installation and maintenance of underground pipes or pipelines to include gas, oil, or water main pipelines and other pipelines extending cross country;

• Laying pipes or pipelines;

• Digging, filling, and backfilling of trenches for pipes.

• Backhoes;

• Dump trucks;

• Mechanical or manual trench diggers.

• Land or road clearing and excavation is classified in 0101.

• Overhead television, power, or telephone lines including poles or towers are classified in 0509 or the applicable utility business classification.

• Asphalt surfacing/resurfacing is classified in 0210 or 0212.

• Concrete construction is classified in the applicable concrete construction classification(s).

• Construction specialty services including the installation of guardrails, lighting standards and striping are classified in 0219.

• Installation and hookup of electrical wiring from where the utility company's lines end to the structure's power meter by the contractor wiring a building is classified in 0601.

• Construction of sewer lines, drainage systems, canals, ditches, or underground tanks are classified in 0108.

• Installation of cable in buildings is classified in 0601.

• Construction of underground utility lines or cable is classified in 0107-00.

Contractors engaged in the construction of ditches and canals not covered by another classification (N.O.C.).

A ditch or canal consists of a long trench dug in the ground that will remain uncovered to serve as an artificial waterway or artificially improved river such as for irrigation, drainage, or a boundary line.

• Digging of main irrigation canals or drainage ditches;

• Digging all laterals extending from the canal or ditch;

• Installation of pipe and making connections as needed;

• Filling or backfilling as needed.

• Backhoes;

• Bulldozers;

• Dump trucks;

• Mechanical or hand tool trench diggers;

• Power shovels.

• Asphalt surfacing/resurfacing is classified in 0210 or 0212; and

• Concrete construction is classified in the applicable concrete construction classification(s).

Contractors engaged in the construction or repair of new or existing sewer lines and systems.

• Cesspools;

• Drainpools;

• Septic tanks including the drainfield construction;

• Sewers;

• Storm drains.

• Installation and maintenance of all types of storm, sanitary or sewage lines and systems;

• Excavation and trench digging;

• Leveling trenches with fill material such as sand or gravel, including filling or backfilling;

• Installation of force main type sewage work;

• Installation of storm sewer lines including the outfall construction of drain concrete boxes, catch basins, manholes, and handling and laying of pipe (regardless of the size of pipe or depth below the ground);

• Making connections.

• Backhoes;

• Bulldozers;

• Dump trucks;

• Manual digging equipment;

• Power shovels;

• Trenchless or directional boring equipment.

• Side sewer hookups (street to house) when performed by a plumbing contractor as part of a plumbing contract is classified in 0306;

• Sewer pipe cleaning including services engaged in line cleaning and unplugging of waste lines is classified in 0306.

Contractors engaged in the installation, repair or removal of underground tanks not covered by another classification (N.O.C.) such as those used to store gas or oil.

This classification makes no distinction as to the size of tank being placed or removed

• Excavating or digging of holes;

• Placement or removal of tank;

• Filling or backfilling.

• Backhoes;

• Bulldozers;

• Dump trucks;

• Front end loaders;

• Power shovels.

Businesses engaged in the production of sand, gravel, clay, and stone.

• Excavating material from an open or surface type pit at the production site, or from a mine or quarry operation;

• Washing, crushing, sorting, grading and screening sand, gravel, and stone. Sand or gravel in its natural state usually requires only screening with the larger stones being removed;

• Crushing larger stones and rescreening;

• Screening and grading clay;

• Storing refined products in bins, hoppers, piles, or yards;

• Delivery to customers, including by truck or rail;

• This classification includes dealers who stockpile or store products in a yard type of environment prior to delivery to the customers when done in connection with the production of such products.

• Conveyors;

• Front end loaders;

• Gyrators;

• Jaw crushers;

• Roll crushers;

• Scrapers;

• Shaking tables;

• Shovels;

• Trucks.

Special note: Classifications 0112 and 1103 are not assigned to the same business unless all the conditions of the general reporting rule covering the operation of a secondary business have been met.

• Selling custom soil mixes, bark, decorative rock, sand, or gravel when purchased from others is classified in 1103.

• Underground mining operations are classified in 1702.

Businesses engaged in the digging or stripping of humus or peat.

• Stripping material from the surface or bogs with mechanical equipment;

• Moving material from the pit or bog to hoppers by trucks or belt conveyors;

• Grading, screening, and drying the material when necessary prior to storage or delivery;

• Delivery to customers, including by truck or rail;

• This classification includes dealers who stockpile or store material in a yard type of environment prior to delivery to customers when done in connection with the digging or stripping of such products.

• Clamshell diggers or cranes;

• Conveyors;

• Drag lines;

• Hydraulic dredges;

• Power shovels;

• Scrapers;

• Trucks.

Special note: Classifications 0112 and 1103 are not assigned to the same business unless all of the conditions of the general reporting rule covering the operation of a secondary business have been met.

• Selling custom soil mixes, bark, decorative rock, sand, or gravel when purchased from others is classified in 1103.

Businesses engaged in pit, crusher, and bunker operations in connection with highway, street, or roadway construction projects. Generally, this type of operation is located in close proximity to the project site and is only set up for the duration of the project. Products extracted from the pit or surface include boulders, stone, rock, gravel, aggregate, sand, dirt, or clay.

• Excavating open or surface pits by scraping or stripping the surface;

• Crushing material;

• Washing, sorting, crushing, or screening material when needed;

• Storing materials in bunkers or piles until needed;

• Delivery to customers, including by truck or rail;

• These products are used in a variety of ways as part of the roadway project such as, but not limited to, making preliminary roads into an area, filling in low or uneven areas, using as natural barriers, and bringing the roadbed and surrounding areas to grade.

• Bulldozers;

• Conveyors;

• Front end loaders and other earth moving equipment;

• Gyrators;

• Jaw crushers;

• Power shovels;

• Roll crushers;

• Scrapers;

• Shaking tables;

• Trucks.

Special note: This classification is not assigned to contractors making the materials for their own road construction project.

Businesses engaged in the digging or dredging of sand, gravel, or shale that is not covered by another classification (N.O.C.).

• Excavating material from surface pits or obtaining material from nonnavigable waters with mechanical equipment;

• Moving material from the bank, pit, or dredge to hoppers by trucks, belt conveyors, narrow gauge railroads, or pipelines;

• Washing, grading, and screening material. Sand or gravel in its natural state usually requires only screening with the larger stones being removed;

• Crushing larger stones and rescreening;

• Storing material bins, hoppers, or piles;

• Delivery to customers, including by truck or rail;

• This classification includes dealers who stockpile or store material in a yard type of environment prior to delivery to customers when done in connection with the digging or stripping of such products.

• Clamshell diggers;

• Clamshell dredges;

• Cranes;

• Drag lines;

• Hydraulic dredges;

• Power shovels;

• Trucks.

Special note: Classifications 0112 and 1103 are not assigned to the same account unless all the conditions of the general reporting rule covering the operation of a secondary business have been met.

• Selling custom soil mixes, bark, decorative rock, sand, or gravel when purchased from others is classified in 1103;

• Underground mining operations are classified in 1702.

Applies to contractors engaged in the construction, maintenance or repair of bridges, trestles, overhead crossings and viaducts including the foundations and approaches. These types of structures provide a series of spans or arches, or a type of vertical and horizontal framework for a road or railroad passage over an obstacle such as a waterway, wide valley, other roads, or railroads. Work contemplated by this classification includes the construction of approaches, abutments, foundation supports, framework, and includes all concrete, iron or steel, timber, or carpentry work to completion of the project. The approach is the area of ground or roadway built up just before entering onto a structure such as a bridge or trestle. The abutments are the reinforced foundation supports at the end of the approach which will bear much of the weight for the structure. The erection of the structure usually begins at both ends of the approaches and abutments and gradually continues toward the center of the structure. This classification includes activities such as, but not limited to, the placement and securing of piles, beams and members by way of boom or crane, forming columns, piers and supports, tying reinforcing steel, set-up and tear down of forms, pouring and finishing of concrete, installing precast deck supports, decking slabs and nonstructural members, constructing the retaining walls, erecting iron railings, and the installation of suspension cables and cable clamps. This classification also includes shaft sinking, pile driving, caisson and cofferdam work as it is considered an integral part of the structure's foundation and support.

This classification excludes asphalt surfacing/resurfacing on roadways which is to be reported separately in classification 0210 and concrete paving which is to be reported separately in classification 0214.

Special note: Care should be exercised prior to assignment of this classification as the workers could be subject to federal laws covered by the Jones Act or by the U.S. Longshore and Harbor Workers Act. A detailed description of these acts can be found in classifications 0104 or 0202.

Applies to contractors engaged in the construction, maintenance or repair of a jetty, levee or breakwater. These types of barriers or embankments are very similar to a dike, but involve substantially more construction in that they usually begin away from the water and extend into a body of water and are sometimes used as protection for a harbor to prevent adverse currents from interfering with shipping. Work contemplated by this classification involves building, protecting and/or filling in an embankment or barrier of a river, harbor or other body of water. The predominant activity involves earth moving or placing of fill or other material. This classification includes, but is not limited to, clearing of land, excavation, filling, and grading and involves earth moving equipment such as, but not limited to, drag lines, graders, scrapers, bulldozers, and dump trucks. Materials include, but are not limited to, dirt, sand, stones or boulders, concrete piles, timber or heavy timber cribbing filled with stones or boulders. Often, the barrier or embankment being built is seeded or paved in part with asphalt, concrete, soil, or cement to assist in strengthening the structure.

This classification excludes pile driving operations in connection with jetty, levee and breakwater operations which are to be reported separately in classification 0202, and asphalt surfacing/resurfacing which is to be reported separately in the classification applicable to the work being performed.

Special note: Care should be exercised prior to assignment of this classification as the workers could be subject to federal laws covered by the Jones Act or by the U.S. Longshore and Harbor Workers Act. A detailed description of these acts can be found in classifications 0104 or 0202.

Applies to contractors engaged in the construction, maintenance or repair of a bulkhead. A bulkhead is a wall or embankment constructed to protect against potential problems such as earth slides, erosion of banks alongside water, or excessive increases in the water level. Work contemplated by this classification involves building, protecting and/or filling in a wall or embankment of a river, harbor or other body of water, or other areas of land. The predominant activity involves earth moving or placing of fill or other material. This classification includes, but is not limited to, clearing of land, excavation, filling, and grading. Equipment used by contractors subject to this classification includes, but is not limited to, drag lines, graders, scrapers, bulldozers, and dump trucks. Materials include, but are not limited to, dirt, sand, stones, boulders, concrete piles, timber or heavy timber cribbing filled with stones or boulders. Often, the wall or embankment being built, or if it already exists, is seeded or paved in part with asphalt, concrete, cement, or soil to assist in strengthening the structure. This classification includes riprap work which is a loose assemblage of broken stones erected in water or on soft ground. Such stone serves as a fill-in material to assist with the building of a dike, levee, or bulkhead.

This classification excludes pile driving operations in connection with bulkhead construction operations which is to be reported separately in classification 0202, and asphalt surfacing/resurfacing which is to be reported separately in the classification applicable to the work being performed.

Special note: Care should be exercised prior to assignment of this classification as the workers could be subject to federal laws covered by the Jones Act or by the U.S. Longshore and Harbor Workers Act. A detailed description of these acts can be found in classifications 0104 or 0202.

Applies to contractors engaged in the construction or placement of concrete culverts or other types of culverts greater than twelve feet in diameter. A culvert is a sewer or drain running under a road, embankment, or structure such as a bridge. Culverts can be made of material such as, but not limited to, concrete, aluminum, and galvanized steel. Their primary purpose is to channel excess water away from the road, embankment, or structure to assist in preventing water damage or flooding. Work contemplated by this classification includes excavation, laying of sand or gravel, placement of culverts, and filling in the site.

Applies to contractors engaged in the construction of tunnels and approaches including the lining, cofferdam work, shaft sinking, and well digging with caissons. A tunnel is a passage through or under a barrier to be used as a roadway, railway or pedestrian walkway. The approach is the area of ground built up before the entrance of a tunnel or similar type of structure. Work contemplated by this classification includes, but is not limited to, the construction of approaches, shaft sinking, caisson and cofferdam work, boring, the framework or lining, and all concrete, iron or steel, timber, and carpentry work to completion of the project. In some instances, the initial phase of a tunnel project may require that the approaches and abutments be put in place. This may involve extensive excavation and fill work depending on how uneven the terrain is with the proposed tunnel entrances. The abutments are the reinforced foundation supports at the end of the approach and will bear much of the weight at the tunnel entrances. Most often, the abutments will consist of metal beams or concrete with reinforced steel, that are placed vertically, horizontally or at an angle into the ground. The boring of the tunnel may include the removal of earth, rock and water with mechanical equipment, drilling and boring machines, rock drills and chippers, explosives, well drilling with caissons, and the need for pumps and drains piped to the outside of the bore. Occasionally, a cofferdam is erected which is a temporary structure from which water can be pumped or sucked to provide a dry work area during construction of the structure. Once the structural support is complete, the cofferdam is taken apart and removed. As the bore progresses steel I-beams are placed and horizontal beams or solid bar stock are bolted or welded for support. Shielding the bore between the I-beams requires bolting or welding steel plates to the beams. This is followed by filling the gaps between the face of the bore and the shielding with sand or concrete grout. Some tunnels will then be lined with concrete, steel or tile, and lighting, ventilation and drains may be installed.

This classification excludes underground mining operations which are to be reported separately in classification 1702, and asphalt surfacing/resurfacing or concrete paving which is to be reported separately in the classification applicable to the work being performed.

Applies to contractors engaged in the construction of dikes not covered by another classification (N.O.C.). A dike is a type of protective barrier or embankment which keeps a body of water such as a river in its proper channel and prevents the erosion of banks. Work contemplated by this classification involves building up and/or protecting the embankment. This classification includes, but is not limited to, earth moving work, assemblage of loose stone or rock, placement of sandbags or concrete piles, fill dirt or broken pieces of concrete, or building of crib work which may be filled in with stone or other types of fill. This classification also applies to diking or ditching work in connection with oil spill clean-up such as alongside a river bank or other shoreline.

This classification excludes pile driving operations which are to be reported separately in classification 0202.

Special note: Care should be exercised prior to assignment of this classification as the workers could be subject to federal laws covered by the Jones Act or by the U.S. Longshore and Harbor Workers Act. A detailed description of these acts can be found in classifications 0104 or 0202.

Businesses engaged in pile construction utilizing a driven or pounding method. Pile driving involves long sturdy posts or columns of timber, steel, or concrete being driven into the earth as a foundation or support for a structure such as a building, pier or wharf. This type of activity usually occurs when a portion of the structure is going to be under water, in mud, at a site where the ground is soft or unstable, or when the structure is expected to be of extraordinary weight.

• Driving wood or steel beams;

• Driving concrete columns;

• All cross beaming, decking, and similar carpentry incidental to, and connected with, pile driving operations as part of the foundation construction project.

• Diving operations or activities which are to be reported separately in classification 0202-04;

• Pile construction work utilizing a drilling method, which is reported in 0202-06;

• Other types of pile construction work that do not involve a drilled or driven method, but is a form of ground stabilization/improvement, which is reported in 0202-06.

Note: Contractors engaged in both pile construction using the driven method and drilled method will have both subclassifications 0202-02 and 0202-06 assigned, and must report in each subclassification as it applies to the work performed.

Special note: Pile driving projects could occur on or adjacent to navigable waters (harbors, rivers, canals) which are defined as those which form a continuous highway for interstate or international commerce. Workers who perform the work activities from on board a vessel could be subject to the Admiralty Law which recognizes such work crews and workers as a master or member of a vessel, and subject to federal law known as the Jones Act. Every person on board a vessel is deemed a seaman if connected with the operation while on navigable waters. The term vessel has been interpreted by the courts to include any type of man-made floating object such as a floating derrick, pile driver or dredge, a barge, or a pontoon (which is a flat bottom boat) or portable float. Workers who perform the work activities from the shoreline or from adjacent areas such as an existing dock, pier, or bridge may or may not be subject to federal law covered under the U.S. Longshore and Harbor Workers Act. Usually, pile driving projects involve a variety of types of work crews such as those working from a floating derrick or pile driver, a barge, a pontoon, a shoreline pile crew, workers inside the cofferdam, as well as the maintenance and repair of the construction material or equipment. Care should be exercised prior to assignment of this classification as the workers could be subject to either or both of these acts. The criteria used in determining federal law and coverage is based on the most current federal court decisions and case law.

Applies to contractors engaged in the construction, maintenance or repair of piers, wharves, docks and marine railways. A pier or wharf is a platform extending from a shore over water and supported by piles or pillars. A dock is the area between two piers or alongside a pier or wharf. These types of platforms are for vessels to tie up and provide an area for loading, unloading, or repairing vessels. Most often, the construction of such platforms will include the foundation or substructure being under water or mud, and the remainder of the platform being exposed above the water or mud. Work contemplated by this classification includes, but is not limited to, construction of the foundation or substructure which consists of shaft sinking, pile driving, stacking of piles and/or erection of a cofferdam, and includes all concrete, steel or carpentry work after the foundation or substructure is built to completion of the project. Shaft sinking involves the removal of earth from a hole with a relatively small diameter and usually at a considerable depth. Pile driving involves long sturdy posts or columns of timber, steel, or concrete being driven into the earth as a foundation or support for the structure. The cofferdam is a temporary structure from which water can be pumped or sucked to provide a dry work area during construction of the foundation or substructure. Once the foundation support is complete, the cofferdam is taken apart and removed. This classification also includes caisson work as part of the construction for the foundation or substructure support.

This classification excludes diving operations or activities which are to be reported separately in classification 0202-04.

Special note: The construction of piers, wharves, docks and marine railways could occur on or adjacent to navigable waters (harbors, rivers, canals) which is defined as those which form a continuous highway for interstate or international commerce. Workers who perform the work activities from on board a vessel could be subject to the Admiralty Law which recognizes such work crews and workers as a master or member of a vessel, and subject to federal law known as the Jones Act. Every person on board a vessel is deemed a seaman if connected with the operation while on navigable water. The term vessel has been interpreted by the courts to include any type of man-made floating object such as a floating derrick, floating barge, a pontoon (which is a flat bottom boat) or portable float. Workers who perform the work activities from the shoreline or from adjacent areas such as an existing dock, pier, or bridge may or may not be subject to federal law covered under the U.S. Longshore and Harbor Workers Act. Usually, these types of projects involve a variety of work crews such as those working from a floating derrick or barge, a pontoon, a shoreline pile crew, workers inside the cofferdam, as well as the maintenance and repair of the construction material or equipment. Care should be exercised prior to assignment of this classification as the workers could be subject to either or both of these acts. The criteria used in determining federal law and coverage is based on the most current federal court decisions and case law.

Applies to establishments engaged in diving operations not covered by another classification (N.O.C.). Diving operations such as underwater diving, skin diving or scuba diving are performed in numerous types of uncontrolled environments such as the ocean, harbors, bays, dams, lakes, as well as controlled environments such as swimming pools or aquarium tanks. Work contemplated by this classification includes, but is not limited to, marine salvage and wreckage, underwater mining and sweeping, underwater construction or demolition, installation, repair and/or inspection of wharves, piers, and docks, inspection of ships, barges, and other vessels, underwater exploration, as well as diving instruction. Classification 0202 includes all diving activities with the following exception: Diving instructors who provide instructional lessons in a controlled environment such as a swimming pool may be reported separately in classification 6209 provided accurate time records are maintained for the instructional lesson hours. Failure to maintain accurate time records will result in the hours in question being assigned to classification 0202 without a division of hours between the two classifications.

Special note: Many diving operations and activities occur on or adjacent to navigable waters (a harbor, river, canal, dam, lake) which is defined as those which form a continuous highway for interstate or international commerce. Workers who perform diving activities (to include divers, deck hands, or "diving tenders" who are support personnel such as line handlers and pump persons) from on board a vessel could be subject to the Admiralty Law which recognizes such work crews and workers as a master or member of a vessel, and subject to federal law known as the Jones Act. Every person on board a vessel is deemed a seaman if connected with the operation while on navigable water. The term vessel has been interpreted by the courts to include any type of man-made floating object such as a floating derrick or dredge, a boat or ship, a barge, or type of pontoon (which is a flat bottom boat) or portable float. Workers who perform diving activities (to include divers, deck hands, or "diving tenders" who are support personnel such as line handlers and pump persons) from the shoreline or from adjacent areas such as an existing dock, pier or bridge may or may not be subject to federal law covered under the U.S. Longshore and Harbor Workers Act. Care should be exercised prior to assignment of this classification as the workers could be subject to either or both of these acts. The criteria used in determining federal law and coverage is based on the most current federal court decisions and case law.

Applies to establishments engaged in diving operations to harvest wild geoduck clams from natural areas. Work contemplated by this classification includes subaqueous harvesting of geoduck clams, sea cucumbers or similar marine life.

Special note: Many diving operations and activities occur on or adjacent to navigable waters (a harbor, river, canal, dam, lake) which is defined as those which form a continuous highway for interstate or international commerce. Workers who perform diving activities (to include divers, deck hands, or "diving tenders" who are support personnel such as line handlers and pump persons) from on board a vessel could be subject to the Jones Act or Admiralty Law which recognize such work crews and workers as masters or members of a vessel, and subject to federal law known as the Jones Act. Every person on board a vessel is deemed a seaman if connected with the operation while on navigable water. The term vessel has been interpreted by the courts to include any type of man-made floating object such as a floating derrick or dredge, a boat or ship, a barge, or type of pontoon (which is a flat bottom boat) or portable float. Workers who perform diving activities (to include divers, deck hands, or "diving tenders" or other support personnel such as line handlers and pump persons) from the shoreline or from adjacent areas such as an existing dock, pier or bridge may or may not be subject to federal law covered under the U.S. Longshore and Harbor Workers Compensation Act (LHWCA). Care should be exercised prior to assignment of this classification as the workers could be subject to either or both state fund or federal jurisdiction. The criteria used in determining federal law and coverage is based on the most current federal court decisions and case law.

Businesses engaged in pile construction utilizing a drilling method. This classification also applies to other types of pile construction work that do not involve a drilled method but is a form of ground stabilization/improvement including, but not limited to:

• Cement grouting;

• Vibro concrete column;

• Vibro replacement.

Structural support (deep foundations), earth retention, ground improvement and grouting are necessary when:

- Surface layer is not adequate or is not economically feasible to use;

- Soils are soft or loose;

- Soil bearing capacity must be increased;

- Support is needed to stabilize slopes;

- Cutting off groundwater is needed;

- Remediating settlement.

• Diving operations or activities which are to be reported separately in classification 0202-04.

• Pile construction work utilizing a driven or pounding method, which is to be reported in 0202-02, Pile construction: Driven method.

Note: Contractors engaged in both pile construction using the driven method and drilled method will have both subclassifications 0202-02 and 0202-06 assigned, and must report in each subclassification as it applies to the work performed.

Special note: Pile driving projects could occur on or adjacent to navigable waters (harbors, rivers, canals) which are defined as those which form a continuous highway for interstate or international commerce. Workers who perform the work activities from on board a vessel could be subject to the Admiralty Law which recognizes such work crews and workers as a master or member of a vessel, and subject to federal law known as the Jones Act. Every person on board a vessel is deemed a seaman if connected with the operation while on navigable waters. The term vessel has been interpreted by the courts to include any type of man-made floating object such as a floating derrick, pile driver or dredge, a barge, or a pontoon (which is a flat bottom boat) or portable float. Workers who perform the work activities from the shoreline or from adjacent areas such as an existing dock, pier, or bridge may or may not be subject to federal law covered under the U.S. Longshore and Harbor Workers Act. Usually, pile construction projects involve a variety of types of work crews such as those working from a floating derrick or pile driver, a barge, a pontoon, a shoreline pile crew, workers inside the cofferdam, as well as the maintenance and repair of the construction material or equipment. Care should be exercised prior to assignment of this classification as the workers could be subject to either or both of these acts. The criteria used in determining federal law and coverage is based on the most current federal court decisions and case law.

Contractors engaged in forms of asphalt paving or surfacing, resurfacing, scraping, sawing, cutting, or patching operations performed on or in connection with new or existing highway, street, or roadway projects including approaches and bridges.

The process begins after the roadbed or roadside grade has already been established and the subsurface or sub base has been prepared.

• Laying crushed stone;

• Placement of expansion joints;

• Application of oil or other adhesive bonding materials; and

• Surface spreading and rolling of crushed aggregate.

• Dump trucks;

• Graders;

• Oil trucks;

• Paving machinery;

• Rollers;

• Scrapers.

• Preliminary roadbed or roadside construction such as clearing of right of ways, establishing grades, subsurfaces or sub bases is classified in 0101;

• Asphalt surfacing/resurfacing not in connection with highway, street or roadway projects is classified in 0212;

• Construction specialty services such as the installation of guardrails, lighting standards, and striping is classified in 0219;

• Concrete construction is classified in the classification applicable to the work being performed.

• Asphalt paving or surfacing, resurfacing, scraping, sawing, cutting, or patching operations not in connection with highway, street, or roadway projects and not covered by another classification (N.O.C.). The process begins after the land grade has already been established and the subsurface or sub base has been prepared.

• The application of pour-in-place types of cushion surfaces for playgrounds.

• Airport runways;

• Bicycle trails;

• Driveways;

• Golf cart paths;

• Landing strips;

• Parking lots;

• Playgrounds;

• Tennis courts;

• Walking paths.

• Laying of crushed stone;

• Placement of expansion joints;

• Application of oil or other adhesive bonding materials;

• Surface spreading and rolling of crushed aggregate.

• Dump trucks;

• Grader;

• Oil trucks;

• Paving machinery;

• Rollers;

• Scrapers.

• Preliminary clearing of land, establishing grades, subsurfaces or sub bases is classified in 0101;

• Asphalt surfacing/resurfacing in connection with highway, street, or roadway projects is classified in 0210;

• Application of asphalt sealant to roadways and parking lots is classified in 0219;

• Application of asphalt sealant to driveways is classified in 0504-06;

• Construction specialty services such as the installation of guardrails, lighting standards and striping are classified in 0219;

• Concrete construction is classified in the classification applicable to the work being performed.

Businesses engaged in concrete paving and repaving of highways, streets, or roadways including approaches and bridges.

Paving and repaving begins after the road's right of way has been cleared and excavated and its subbase is level and compressed.

• Laying of crushed stone and grading or rolling the fill to level and compress;

• Placement of reinforcing steel or expansion joints;

• Set-up and tear down of forms;

• Pouring the concrete;

• Rolling and other finish work;

• Placing manholes, drainage grates, poles, and posts;

• Repairing damaged concrete;

• Exposing underground pipes and utilities;

• Constructing curbs, gutters, sidewalks, median walls, and retaining walls when performed as part of the project;

• Cutting, drilling, sawing, or scraping concrete.

• Dump trucks;

• Graders;

• Paving machinery;

• Rollers;

• Scrapers;

• Water trucks.

• Worker hours clearing right of ways, establishing grades, and preparing the subbases are reported separately in classification 0101.

• Worker hours doing asphalt paving, surfacing/resurfacing are reported separately in the classification applicable to the work being performed.

• Worker hours doing concrete flatwork not in connection with highway, street, or roadway projects are reported separately in classification 0217.

• Worker hours doing installation of guardrails, lighting standards, and striping are reported separately in classification 0219.

• Worker hours constructing covered or multilevel, public or commercial parking garages are reported separately in classification 0518.

Businesses engaged in the construction or repair of concrete curbs, gutters, and sidewalks in connection with highways, streets, or roadways including approaches and bridges.

Construction or repair of concrete curbs, gutters, and sidewalks begins after the roadbed or roadside grade has already been established and the subsurface or subbase has been prepared.

• Constructing concrete curbs, gutters, or sidewalks;

• Placing reinforcing steel or expansion joints;

• Pouring and finishing of concrete;

• Setting up and tearing down of forms;

• Repaving;

• Placing manholes, drainage grates, poles, and posts;

• Repairing damaged concrete;

• Exposing underground pipes and utilities;

• Cutting, drilling, sawing, or scraping concrete.

• Worker hours clearing right of ways, establishing grades, and preparing the subbases are reported separately in classification 0101.

• Worker hours doing asphalt paving, surfacing/resurfacing are reported separately in the classification applicable to the work being performed.

• Worker hours doing concrete flatwork not in connection with highway, street, or roadway projects are reported separately in classification 0217.

• Worker hours doing installation of guardrails, lighting standards, and striping are reported separately in classification 0219.

• Worker hours constructing covered or multilevel, public or commercial parking garages are reported separately in classification 0518.

Businesses engaged in the construction or repair of concrete median (divider) walls and retaining walls in connection with highway, street, or roadway projects including approaches and overpasses.

Construction or repair of concrete median (divider) walls and retaining walls begins after the roadbed or roadside grade has already been established and the subsurface or subbase has been prepared.

• Placing reinforcing steel or expansion joints;

• Pouring and finishing of concrete to form median or divider walls, median strips, or retaining walls alongside the roadway;

• Setting up and tearing down of forms;

• Repaving;

• Placing manholes, drainage grates, poles, and posts;

• Repairing damaged concrete;

• Exposing underground pipes and utilities;

• Cutting, drilling, sawing, or scraping concrete.

• Worker hours clearing right of ways, establishing grades, and preparing the subbases are reported separately in classification 0101.

• Worker hours doing asphalt paving, surfacing/resurfacing are reported separately in the classification applicable to the work being performed.

• Worker hours doing concrete flatwork not in connection with highway, street, or roadway projects are reported separately in classification 0217.

• Worker hours doing installation of guardrails, lighting standards, and striping are reported separately in classification 0219.

• Worker hours constructing covered or multilevel, public or commercial parking garages are reported separately in classification 0518.

Businesses engaged in concrete sawing, drilling, and cutting in connection with concrete highway, street, or roadway projects including concrete curbs, gutters, sidewalks, median walls, and retaining walls.

Concrete sawing, drilling, and cutting occur on new or existing roadway and related projects.

• Cutting, drilling, sawing, and scraping concrete;

• Exposing underground utility lines and systems;

• Placing manholes, drainage gates, poles, and posts;

• Repairing damaged concrete.

• Worker hours clearing right of ways, establishing grades, and preparing the subbases are reported separately in classification 0101.

• Worker hours doing asphalt paving, surfacing/resurfacing are reported separately in the classification applicable to the work being performed.

• Worker hours doing concrete flatwork not in connection with highway, street, or roadway projects are reported separately in classification 0217.

• Worker hours doing installation of guardrails, lighting standards, and striping are reported separately in classification 0219.

• Worker hours constructing covered or multilevel, public or commercial parking garages are reported separately in classification 0518.

Contractors engaged in the construction and/or repair of concrete flatwork not covered by another classification (N.O.C.).

• Curbing;

• Fences;

• Pathways;

• Patios;

• Walkways.

• Placement of reinforcing steel and wire mesh;

• Pouring and finishing of concrete;

• Set-up and tear down of forms.

• Floats (for smoothing concrete);

• Laser levels;

• Mixers;

• Protective gear;

• Shovels;

• Vapor barriers;

• Wheel barrows.

• Land clearing or excavation work for a land clearing or excavation contract is classified in 0101;

• Concrete work contained within a building or structure made of concrete, masonry, iron or steel frame, such as the foundation, floor slab, precast or poured in place bearing floors or wall panels, columns, pillars, metal erection or any other portion of the building or structure itself, is classified in 0518;

• Paver stone installation projects such as, but not limited to, driveways, walkways, patios and pool decks are classified in 0301;

• Concrete work performed on or in connection with projects on highways, streets, or roadways, including sidewalks, curbs, gutters, median or retaining walls, or sawing, drilling or cutting operations as part of the roadway is classified in 0214;

• Bridge construction is classified in 0201;

• New dam construction is classified in 0701;

• Concrete landscape curbing when done as part of a landscape project is classified in 0301;

• Concrete foundation and flatwork construction or repair in connection with wood frame construction are classified in 0217-01;

• Concrete sawing, drilling, or cutting is classified in 0217-02.

Contractors engaged in construction or repair of concrete foundation and flatwork in connection with a wood frame structure.

• Concrete footings, stem walls, floor pads, cellar floors, or garage floors;

• Swimming pools and ponds.

• Placement of reinforcing steel and wire mesh;

• Pouring and finishing of concrete;

• Set-up and tear down of forms.

• Floats (for smoothing concrete);

• Laser levels;

• Mixer;

• Protective gear;

• Shovels;

• Vapor barriers;

• Wheel barrows.

• Land clearing or excavation work for a land clearing or excavation contract is classified in 0101;

• Concrete work contained within a building or structure made of concrete, masonry, iron or steel frame, such as the foundation, floor slab, precast or poured in place bearing floors or wall panels, columns, pillars, metal erection or any other portion of the building or structure itself, is classified in 0518;

• Paver stone installation projects such as, but not limited to, driveways, walkways, patios and pool decks are classified in 0301;

• Concrete work performed on or in connection with projects on highways, streets, or roadways, including sidewalks, curbs, gutters, median or retaining walls, or sawing, drilling or cutting operations as part of the roadway is classified in 0214;

• Bridge construction is classified in 0201;

• New dam construction is classified in 0701;

• Concrete landscape curbing when done as part of a landscape project is classified in 0301;

• Concrete flatwork not covered by another classification is classified in 0217-00;

• Concrete sawing, cutting, or drilling is classified in 0217-02.

Contractors engaged in concrete sawing, drilling, or cutting not otherwise classified (N.O.C.).

• Sawing, cutting, drilling in connection with wood frame and nonwood frame buildings and structures;

• Sawing, cutting and drilling for ventilation boxes in the footings or stem walls;

• Cutting out for windows or doorways;

• Preparing to mount brackets for stairways or interior bearing walls;

• Cutting interior walls as part of a building renovation project;

• Cutting out for electrical and switch boxes;

• Repairing defective areas.

• Cutters and edgers;

• Power drills and hammers;

• Saws;

• Specialty tools;

• Water pumps.

• Land clearing or excavation work for a land clearing or excavation contract is classified in 0101;

• Concrete work contained within a building or structure made of concrete, masonry, iron or steel frame, such as the foundation, floor slab, precast or poured in place bearing floors or wall panels, columns, pillars, metal erection or any other portion of the building or structure itself, is classified in 0518;

• Paver stone installation projects such as, but not limited to, driveways, walkways, patios and pool decks are classified in 0301;

• Concrete work performed on or in connection with projects on highways, streets, or roadways, including sidewalks, curbs, gutters, median or retaining walls, or sawing, drilling or cutting operations as part of the roadway is classified in 0214;

• Bridge construction is classified in 0201;

• New dam construction is classified in 0701;

• Concrete landscape curbing when done as part of a landscape project is classified in 0301;

• Concrete flatwork not covered by another classification is classified in 0217-00;

• Concrete foundation and flatwork construction or repair in connection with wood frame construction are classified in 0217-01.

Applies to contractors engaged in the installation or removal of lighting for highways, streets, roadways, parking lots, and light standards. It also applies to the installation, repair, or removal of signs, guardrails, roadside reflectors, lane buttons or turtles, or lane markers not covered by another classification (N.O.C.). Usually, these activities occur as finishing touches after new or existing roadways are paved or surfaced. Roadway lighting includes traffic signal lights, and halogen or mercury vapor lights mounted to metal standards erected alongside the roadway. Signs (such as speed limit, road condition, city and town mile destination) are mounted on overpasses or on wood or metal poles erected alongside the roadway. Guardrails include metal barriers mounted on wood or metal poles driven into the roadside shoulder. Lane markers, lane buttons or turtles consist of small reflectors, or chips of plastic or concrete attached to the road with an adhesive bonding material. This classification includes the related hook-up of power to the light standard.

This classification excludes the installation of power lines that feed into power poles which is to be reported separately in the applicable construction classification for the work being performed.

Special note: This classification excludes exterior sign erection, repair, or removal not in connection with displaying highway, street, or roadway information or conditions even though such signs may be erected or placed alongside roadways (such as advertisement bill boards, business, or personal property signs) which is to be reported separately in classification 0403.

Applies to contractors engaged in specialty services such as the painting or striping of highways, streets, roadways, or parking lots not covered by another classification (N.O.C.). This classification includes painting, striping, numbering, or lettering of highways, streets, roadways, parking lots, parking garages, airport runways, taxi ways, curbs, roadway dividers, median strips, and special traffic areas such as fire, bus, handicap, and no parking zones. The paint or other material used for these markings is usually applied to the surface using a mechanical device, either self-propelled or towed by a truck or other motor vehicle. In some instances, the paint will be applied manually with brush or roller which is included in this classification. This classification includes the application of asphalt sealants to roadways or parking lots; mechanically placed block or prefab panels next to a roadway for noise barrier, median, or retaining walls; and concrete barrier installation, in connection with road construction, by a concrete barrier rental business or by a flagging contractor who also supplies the concrete barriers. This includes the flaggers who are necessary during the installation of the barriers as well as any flaggers the company supplies to the road construction project itself.

This classification excludes the interior painting of buildings which is to be reported separately in classification 0521, the exterior painting of buildings or structures which is to be reported separately in classification 0504; application of asphalt sealant to driveways which is to be reported separately in classification 0504-06; the rental of the concrete barriers and other flagging equipment which is to be reported separately in classification 6409; and flaggers who are not employed by a concrete barrier rental business or by a flagging contractor who also supplies the concrete barriers which are to be reported separately in classification 7116 or 7118 as appropriate.

Contractors engaged in the installation, service, or repair of lawn type sprinkler systems.

Lawn sprinkler systems are installed at private residences or commercial businesses.

• Identifying area of land to be covered, to determine size and amount of pipe and sprinkler heads needed for sprinkler system install;

• Installing heads, and timers;

• Laying/joining/repairing pipe;

• Planting or replacing grass from seed or sod;

• Trenching.

• Electric power tools;

• Fertilizer spreaders;

• Hand tools/rakes;

• Mowers;

• Trenchers;

• Wheelbarrows;

• Vibrating plow or pipe pulling machine.

• Worker hours engaged in construction of open canal type irrigation systems are reported separately in classification 0108.

• Installation, service, or repair of above or below ground agricultural/irrigation systems are classified in 0301-06.

• Worker hours engaged in installation or maintenance of a landscape roofing irrigation system, are reported separately in classification 0507.

• Maintenance and cleaning of lawn sprinkler system pipes and heads done in connection with a landscape maintenance contract are classified in 0308.

Contractors engaged in the installation, service, or repair of above or below ground agricultural sprinkler and irrigation systems not covered by another classification (N.O.C.).

These differ from lawn sprinkler systems as the size of pipes and pumps installed are larger to produce the water pressure to irrigate large areas of land.

• Above or below ground;

• Center pivot or linear move;

• Fixed or movable;

• Wheel or impulse.

• Electric power tools;

• Fertilizer spreaders;

• Hand tools/rakes;

• Mowers;

• Small front end loaders;

• Tractors with till attachments;

• Trenchers;

• Wheelbarrows;

• Vibrating plow or pipe pulling machine.

• Worker hours engaged in construction of open canal type irrigation systems are reported separately in classification 0108.

• Installation, service, or repair of lawn type sprinkler systems is classified in 0301-04.

• Contractors engaged in new landscape construction or renovation projects not covered by another classification (N.O.C.).

• Contractors engaged in the installation of invisible fences, which are usually used to confine animals within a given area.

• Contractors engaged in the installation, service, and repair of paver stone installation projects such as, but is not limited to, driveways, walkways, patios, and pool decks.

• Producing preliminary drawings of a landscape, renovation, or invisible fence project;

• Preparing the ground (may include tilling and spreading of top soils);

• Trenching;

• Burying wire in trench (invisible fencing);

• Connecting low voltage transmitter box for invisible fencing;

• Planting trees, plants, or shrubs;

• Planting or replacing grass from seed or sod;

• Installing ground cover material or plastic to retard weeds;

• Placing concrete borders;

• Incidental construction of rockery, extruded concrete curbing, fences, ponds, walls, arbors, trellises and gazebos when performed by employee of a landscape contractor as part of a landscape contract. If these activities are conducted separately from a landscape contract and not part of the landscape project, they are reported separately in the classification applicable to the work being performed;

• Installing concrete, brick, or stone pavers to create walkways, pathways, pool decks, or patios;

• Incidental construction of walls and rockery performed by employees of a paver stone installation contractor as part of a paver installation contract. If these activities are conducted separately from a paver stone installation contract and not part of a paver stone project, they are reported separately in the classification applicable to the work being performed.

Example: A paver installation company creates the driveway, walkways, and patio at a residential home. The company finds that the lawn will slide onto the driveway unless a three foot tall retaining wall the length of the driveway is created. The creation of the retaining wall to protect the driveway is incidental to the paver installation project and may be reported in 0301.

• Interlocking concrete pavers, which are primarily sand set, but in some cases mortar set;

• Permeable interlocking concrete pavers, which are installed to help reduce storm water runoff;

• Pedestal set pavers, when used for roof top decks and plaza areas to increase living space, or to meet certain environmental requirements (not acting as a roofing system).

• Electric power tools;

• Fertilizer spreaders;

• Hand tools/rakes;

• Mowers;

• Small front end loaders;

• Tractors with till attachments;

• Trenchers;

• Wheelbarrows.

• Worker hours engaged in grading, clearing, or contouring of land are reported separately in classification 0101.

• Worker hours engaged in construction of open canal type irrigation systems are reported separately in classification 0108.

• Worker hours engaged in installation of bulkheads not adjacent to water, or similar structures built of rock, are reported separately in classification 0302.

• Worker hours engaged in installation or on-site maintenance of roofing materials composed of impermeable barriers, sod, soil, and plants, sometimes termed landscape roofing, living roofing, garden roofing, green/environmentally beneficial roofing, brown/biodiverse roofing, or vegetative roofing, are reported separately in classification 0507.

• Worker hours engaged in paver installation on a roof by a roofing contractor, when acting as part of the roofing system, are reported separately in classification 0507.

• Worker hours engaged in installation or maintenance of a landscape roofing irrigation system are reported separately in classification 0507.

• Worker hours engaged in lawn care maintenance or chemical spraying or fumigating are reported separately in classification 0308.

Applies to contractors engaged in interior or exterior work in brick, block, stone, brick or stone veneer, granite, marble, slate, or quartz, not covered by another classification (N.O.C.).

Projects in this classification include, but are not limited to:

• Decorative additions to buildings;

• Fences;

• Walls;

• Installation of slab stone or concrete countertops;

• Construction of entire buildings or structures with brick, block or stone products;

• Setting tombstones.

Work contemplated by this classification includes, but is not limited to:

• Cutting;

• Laying or installing;

• Polishing;

• Dry setting or adhering with mortar;

• Tuck pointing (filling and/or finishing brickwork or stonework joints with cement or mortar).

• Worker hours engaged in tile setting and countertop installations, as described in 0502, which are classified in 0502;

• Worker hours engaged in plastering, stuccoing or lathing work which are classified in 0303;

• Worker hours engaged in paver stone installation work projects such as, but not limited to, driveways, walkways, patios and pool decks which, if the conditions of WAC 296-17-31013 Building construction are met, may be reported separately in 0301;

• Worker hours engaged in mechanically placed block or prefab panels next to a roadway for noise barrier, median or retaining walls, which are to be reported in classification 0219;

• Worker hours engaged in concrete flat work which are to be classified separately in the classification applicable to the work being performed;

• Worker hours engaged in all other masonry work (as described in 0302-02), which are classified in 0302-02.

Special notes: Contractors who operate a shop to cut, mill and polish stone products are to be assigned classification 3104-53 for the shop work; contractors operating a shop to make finished concrete products are to be assigned classification 3509 for the shop work. When a business is assigned classification 3104 or 3509 for the shop operation, then classification 5206 "Permanent yard or shop" may no longer be applicable to the business.

Contractors often have a showroom to display examples of their work and products which they install. If all the conditions of the general reporting rules covering standard exception employees have been met, then employees engaged exclusively in showing the display area or showrooms to customers are to be assigned classification 6303.

Applies to contractors engaged in interior or exterior masonry work including, but not limited to, the construction, repair, lining or relining of:

• Blast furnaces;

• Benches;

• Chimneys;

• Decorative columns;

• Fire pits;

• Fireplaces/pads;

• Outdoor barbeques;

• Ovens;

• Planter boxes.

Work contemplated by this classification includes, but is not limited to:

• Cutting and laying brick, block or stone;

• Tuck pointing (filling and/or finishing brickwork or stonework joints with cement or mortar).

• Worker hours engaged in plastering, stuccoing or lathing work which are classified in 0303;

• Worker hours engaged in tile setting and countertop installations, as described in 0502, which are classified in 0502;

• Worker hours engaged in concrete work, which is classified in the classification applicable to the work being performed;

• Worker hours engaged in all other masonry work (as described in 0302-01), which are classified in 0302-01.

Contractors engaged in interior and exterior plastering, stuccoing, and lathing work on buildings or structures not covered by another classification (N.O.C.).

• Lathing work which involves nailing thin wood or metal strips and wire mesh or Styrofoam panels to studs or joists to support the application of plaster or stucco;

• Mixing of plaster or cement with water; and

• Applying the mixture by hand trowel or low pressure spray apparatus to the lathing material.

• Masonry or brick work is classified in 0302;

• Interior painting is classified in 0521;

• Exterior painting is classified in 0504; and

• Concrete work is classified in the classification applicable to the work being performed.

Applies to contractors engaged in plumbing work not covered by another classification (N.O.C.). Work contemplated by this classification includes activities such as, but not limited to, rough-in plumbing work as part of new or remodel projects, placement of pipe (plastic, copper or galvanized), cutting and/or threading pipe, soldering, welding or gluing all types of pipe, fittings or valves, installation of fixtures (sinks, showers and tubs, faucets), installation of appliances (dishwashers, hot water tanks, refrigerators with ice and water dispensers), and other necessary plumbing activities in connection with water supplies, water carrying, dispensing, or drainage systems. This classification includes incidental side sewer hook ups (street to house) when performed by a plumbing contractor subject to this classification, and only when it is performed as a part of a plumbing contract which includes installation of waste lines and waste carry systems within a building; and sewer pipe cleaning including services provided by service providers engaged in cleaning or unplugging waste lines.

This classification excludes side sewer hook ups performed as part of an excavation contract which are to be reported separately in classification 0101, and underground water line or water main construction which is to be reported separately in classification 0107.

Special note: This classification includes the installation of display areas or showrooms which provide prospective customers an opportunity to inspect the quality of workmanship and products carried by the contractor. Generally, displays or showrooms are installed where the contractor stores his materials. It is common for contractors subject to this classification to sell plumbing fixtures and supplies, but the intent of these areas is not to sell products to walk-in customers. Sale of these products by a plumbing contractor is included in classification 0306. Classifications 2009, 6309, or similar store classifications are not to be assigned to a contractor's business. Employees engaged exclusively in showing the display areas or showrooms to customers are to be assigned classification 6303 provided the conditions of the standard exception general reporting rule have been met.

Applies to contractors engaged in the installation, service or repair of automatic sprinkler or fire extinguishing systems within buildings. Work contemplated by this classification includes installation of pipe, fittings, couplings, valves, hangers, regulators, and alarms in ceilings, walls and floors, and cutting and/or threading pipe. These systems are usually equipped to release dry chemicals or water automatically when the surrounding temperature exceeds a predetermined limit.

This classification excludes contractors engaged in the installation, service or repair of outside lawn type and agricultural/irrigation sprinkler systems who are to be reported separately in classification 0301, and contractors engaged in all types of general plumbing installation or repair work who are to be reported separately in classification 0306-00.

Applies to contractors engaged in the installation of insulated covering on boilers, steam pipes, water pipes and heating ducts to help them retain heat. A boiler is a type of enclosed storage tank erected within a building which heats and circulates extremely hot water or converts hot water into steam. Contractors subject to this classification may also install water jets inside the tanks.

This classification excludes contractors primarily engaged in the erection of boiler tanks who are to be reported separately in classification 0306-04, and the removal of asbestos from boilers which is to be reported separately in classification 0512.

Applies to contractors engaged in the installation, service or repair of boilers not covered by another classification (N.O.C.), including boiler scaling and tank erection within buildings. A boiler is a type of enclosed storage tank erected within a building which heats and circulates extremely hot water or converts hot water into steam. Work contemplated by this classification includes the erection and/or installation of the boiler or tank (which is above ground), pipes, tubing, ducts, heating units, valves, headers, jets and insulation coverings. Also included is the process of boiler scaling which is the removal of scales or residue from the tank or pipes using chemicals, steam or mechanical methods.

This classification excludes contractors primarily engaged in covering a boiler and pipes with insulation covering who are to be reported separately in classification 0306-03, and the erection of exterior tanks which is to be reported separately in classification 0508.

Applies to contractors engaged in the installation, service or repair of pumps related to water or waste carrying systems, and which are not covered by another classification (N.O.C.). Work contemplated by this classification applies to all types of water or sump pumps in connection with residential or commercial settings, water wells, and irrigation and drainage systems. A pump is a device that siphons or transfers material from one source or container to another. Activities include pump installation or repair services related to a building's water lines and water carrying systems, plumbing fixtures, dispensers, swimming pools and hot tubs, water wells, and agricultural or irrigation systems.

This classification excludes the installation of water pumps in connection with drilling operations which is to be reported separately in classification 0103; the installation or repair of service station pumps which is to be reported separately in classification 0603; and contractors engaged in all types of general plumbing installation or repair work who are to be reported separately in classification 0306-00.

Applies to establishments engaged in the installation of plumbing lines for new water conditioning, purifying or softening systems. Establishments providing this type of service are not required to be a "licensed plumber" to do the installation; however, it does involve plumbing work. The installation involves cutting the water line between the water source and the building or home. The line is cut with a hacksaw, reciprocating saw, or copper tube cutter, depending on the type of pipe involved. After the line is cut, the water source is connected to the intake of the system and the building or home is connected to the outlet of the system with supply and return lines. The bypass unit will allow the water to remain hard for the outside faucet. A small rubber hose is installed under the house into the drain. Occasionally, a sump pump is needed. For plastic pipes, glue is used to seal the connections. On copper pipes, soldering equipment is used to secure the connections. Water softening is a process by which the water passes through a resin tank where calcium ions are exchanged for sodium ions, resulting in "soft" water. Periodically, the resin is recharged by "back flushing" with a saturated salt solution from another tank. Installations of this type include the two tanks, pressure regulators, valves, and in new facilities an automatic timer.

Special note: This classification allows for the service or repair of water softening or treatment systems to be reported separately in classification 0607 provided accurate time records are maintained which distinguishes new installation contract work from service or repair contract work.

Applies to contractors engaged exclusively in the installation, service or repair of hot water heater units. Work contemplated by this classification includes removal of old units and the installation of new or replacement units. This includes activities such as disconnecting hot heater units, removal of plastic, copper or galvanized water pipes, installing or setting up new or replacement units, installing new pipes, cutting and/or threading pipe, soldering, welding or gluing all types of pipe, fittings or valves, filling and testing the new or replacement units, and wrapping hot water heaters with insulation blankets.

This classification excludes contractors engaged in all types of general plumbing work, or when the installation, service or repair of a hot water heater unit is performed as part of a general plumbing contract which is to be reported separately in classification 0306-00.

Installation, service, or repair of heating systems, ventilation systems, air conditioning systems, refrigeration systems, furnaces, built-in vacuum systems, or pneumatic tube systems.

• Air conditioning units;

• Air purification systems;

• Concrete pads;

• Duct systems, including duct cleaning;

• Fittings;

• Flat sheets of metal;

• Galvanized pipe;

• Heat pumps;

• Heater units;

• Hoods and protective metal covers;

• Hot water tanks;

• Insulation wrap;

• Preformed or bent venting duct and pipe;

• Refrigeration units;

• System controls;

• Thermostats; and

• Vent collars and reels.

• Construction sites;

• Residential customer locations;

• Commercial customer locations;

• Yards and shops; and

• Display areas or showrooms.

• Worker hours engaged in sheet metal fabrication shop operations are reported separately in classification 3404.

• Businesses doing only duct cleaning or duct cleaning combined with other business activities in 1105-02 are classified in 1105-02.

• Worker hours engaged in other sheet metal installation or sheet metal construction are reported separately in classification 0519.

Installation, service, or repair of stoves that burn wood, pellets or gas.

• Electric furnace units;

• Fireplace inserts or units;

• Fittings;

• Gas fireplace logs;

• Gas stoves or furnaces;

• Hearth pads;

• Hoods and protective metal covers;

• Preformed or bent venting duct and pipe;

• Pellet stoves;

• System controls;

• Thermostats;

• Vent collars and reels; and

• Wood stoves.

• Construction sites;

• Residential customer locations;

• Commercial customer locations;

• Yards and shops; and

• Display areas or showrooms.

• Worker hours engaged in brick or masonry work are reported separately in classification 0302.

• Worker hours engaged in sheet metal fabrication shop operations are reported separately in classification 3404.

• Worker hours engaged in other sheet metal installation or sheet metal construction are reported separately in classification 0519.

Applies to establishments engaged in providing chemical spraying and fumigating services only to established residential landscaping and commercial properties. Work contemplated by this classification includes, but is not limited to, the application of various liquid and granular chemicals (fertilizers, herbicides, pesticides, insecticides, iron, nitrogen, slow release food stakes) for use on grass, plants, shrubs, flowers, trees, moss, ivy or weeds. Employees of establishments subject to this classification arrive at the location site in a tank truck equipped with a premixed solution that is dispensed with a spray hose, or by fertilizer spreaders, injection guns, and back pack dispensers.

This classification excludes chemical spraying of roadway median strips by nonmunicipal employees adjacent to state, city or town roadways which is to be reported separately in classification 0101; chemical spraying done in connection with forest roads or reforestation projects which is to be reported in the applicable forestry classification; pest and termite control which is to be reported separately in classification 6602; chemical spraying and fumigating by employees of cities, counties, state agencies, or other municipalities which is to be reported in the classification applicable to the type of municipality performing the work; chemical spraying of agricultural farms or orchards which may be reported separately in classification 4808 or in the agricultural classification applicable to the employer's operation; and crop dusting by aircraft which is to be reported separately in classification 6903.

Applies to contractors engaged in maintenance of established lawns and gardens. Work contemplated by this classification includes, but is not limited to, mowing and thatching lawns, edging, weeding flower beds, raking, rototilling gardens, application of fertilizers, and spraying and trimming of shrubs. Also included is minor landscape renovation and/or restoration activities incidental to, and performed as part of, the lawn care maintenance contract for an existing lawn or landscape such as the removal and replacement of plants, turf repair or reseeding of grass, and the spreading of decorative rock, topsoil, or bark. This classification includes replacement of sprinkler heads and cleaning of lawn type sprinkler systems only when performed in connection with and incidental to the lawn care maintenance contract. Contractors who provide snow blowing and snow removal services using hand-held or push-propelled equipment are included in this classification. Equipment used by contractors subject to this classification includes, but is not limited to, riding or power lawn mowers, power sweepers, edgers, thatchers, weed eaters, grass blowers, fertilizer spreaders, sprayers, gas or electric power tools, and hand tools.

This classification excludes new landscape construction which is to be reported separately in classification 0301; tree care and pruning services which are to be reported separately in classification 0106; grading, clearing, or contouring of land which is to be reported separately in classification 0101; installation, service or repair of lawn type sprinkler systems which is to be reported separately in classification 0301; the installation, service or repair of above or below ground agricultural irrigation systems which is to be reported separately in classification 0301; the installation or on-site maintenance of roofing materials composed of impermeable barriers, sod, soil, and plants, sometimes termed landscape roofing, living roofing, garden roofing, green/environmentally beneficial roofing, brown/biodiverse roofing, or vegetative roofing, which is to be reported in classification 0507; any installation or maintenance of a landscape roofing irrigation system, which is reported in classification 0507.

Special notes: Classifications 0308 and 0301 may be assigned to the same business provided that the conditions of the general reporting rule covering the operation of a secondary business have been met.

Care should be exercised in the assignment of this classification when tree services are included. Tree care service contracts generally call for the radical topping, pruning or cutting of tree limbs to remove or eliminate a hazard to buildings, property, or power lines. Tree trimming as part of this classification is only for the purpose of shaping and maintaining healthy trees and to control size for the visual relationship to other landscape material.

Applies to contractors engaged in the erection, repair, and/or removal of signs, including related painting and maintenance. Signs include, but are not limited to, commercial business or personal property signs, advertisement billboards, poster panels erected at commercial or residential properties, private properties, buildings or structures, or open spaces. Signs may be made of wood, metal, plastic, glass, or neon tube. Free standing sign erection process begins with digging or drilling holes in which to stand or set poles or posts. The sign is attached to the pole or post prior to standing or is lifted with a boom or crane to be mounted and secured. Other signs are mounted and secured directly to buildings or structures. This classification includes the related electrical hook-up work to install neon and digital signs such as those located at banks and stores including the maintenance, repair, and painting of signs at the customer's location or at the contractor's shop.

This classification excludes the installation or removal of highway, street, or roadway signs that specify roadway information (such as speed limits, road conditions, city and town mile destinations) which are mounted on overpasses or erected alongside the roadway which are to be reported separately in classification 0219; the placement of temporary signs which is to be reported separately in classification 4910; or the manufacturing of signs which is to be reported separately in the applicable classification.

Applies to contractors engaged in sign painting or lettering outside buildings or structures not covered by another classification (N.O.C.), and includes all contractor's shop operations. Generally, this classification involves specialty lettering or painting such as, but not limited to, business logos, addresses, business hours or phone numbers, murals or other artwork.

This classification excludes contractors engaged in the installation or removal of highway, street, or roadway signs that specify roadway information (such as speed limits, road conditions, city and town mile destinations) which are mounted on overpasses or erected alongside the roadway which are to be reported separately in classification 0219; striping parking lots and painting curbs (and numbering on curbs) which is to be reported separately in classification 0219; sign painting or lettering inside of buildings, including inside murals or other artwork, which is to be reported separately in classification 4109; exterior painting of buildings or structures which are to be reported separately in classification 0504; painting or lettering in connection with an automotive body shop which is to be reported separately in classification 3412; and the erection, repair or removal of outdoor signs which is to be reported separately in classification 0403-00.

Applies to contractors engaged in the installation or removal of floor coverings or countertops.

• Floor coverings include, but are not limited to, carpet, vinyl, laminate, tile, terrazzo, or parquet;

• Countertops include, but are not limited to, laminate, tile, and solid surface (synthetic).

Tile is various sizes and shapes, usually from 1" x 1" up to 24" x 24" and packaged in a box. Tile installation in this classification includes, but is not limited to:

• Ceramic, glass, or clay tiles;

• Stone in tile-size dimensions, often used for interior installations in floors, showers, countertops, and backsplashes such as:

– Granite;

– Marble;

– Slate.

Work contemplated by this classification includes the installation and/or removal of:

• Countertops;

• Flooring;

• Padding;

• Tack or door strips;

• Subflooring;

• Base boards;

• Artificial turf when used for areas such as patios, and laid similarly to carpet.

This classification excludes contractors engaged in:

• The installation of stone countertops as described in classification 0302;

• The installation of hardwood countertops or flooring which is to be reported separately in classification 0513;

• The installation of countertops as described in this classification when the installation is part of an interior finish carpentry or cabinetry contract, which is to be reported in classification 0513;

• The installation of brick, block and slab stone as described in classification 0302;

• The installation of roofing tiles which is to be reported separately in classification 0507;

• The installation of artificial field turf in landscaping projects or athletic fields which is to be reported in classification 0301; and

• Floor covering stores which are to be reported separately in the applicable classification.

Special note: Contractors often have a showroom to display examples of their work and products which they install. If all the conditions of the general reporting rules covering standard exception employees have been met, employees engaged exclusively in showing the display areas or showrooms to customers are to be assigned classification 6303.

Businesses engaged in waterproofing buildings or structures not covered by another classification (N.O.C.) regardless of the height of the building or structure.

• Decks;

• Driveways;

• Fences;

• Floors;

• Foundations and foundation walls;

• Walkways;

• Walls.

• Asphalt;

• Concrete;

• Metal;

• Plaster;

• Steel;

• Stone;

• Wood.

• Membrane, which adheres long strips of rubber and pumice to exterior walls or foundations with the use of primer;

• Pressure injection, which uses a long wand inserted into the material to fill cracks;

• Epoxy injection, which uses a caulk gun to inject a silicon material into cracks and is performed on the interior or exterior of the building or structure;

• Application with use of a brush, roller, or spray directly onto the surface of the material.

• Excavation work performed in conjunction with a waterproofing contract is classified in 0101;

Special note: If excavation work is performed (to remove dirt away from a foundation wall or to push it against the wall after the waterproofing material is applied) classification 0101 applies, regardless of the type of contractor performing the excavation work.

• Waterproofing operations performed in connection with roofing or subaqueous work are classified in the classification applicable to the work being performed;

• Worker hours engaged in the application of asphalt sealant or waterproof materials to roadways and parking lots are reported separately in classification 0219;

• Filling cracks or voids with like materials is classified in the classification applicable to the repair work being performed; and

• The application of waterproof materials performed by a concrete contractor as part of the concrete construction project is classified in the classification applicable to the work being performed.

Businesses engaged in pressure washing or sandblasting buildings or structures, not covered by another classification (N.O.C.).

• Pressure washing, which involves a forced spray of air and water;

• Sandblasting, or abrasive blasting, which involves a forced spray of sand, steel, or glass;

• On multistory buildings: Cleaning roofs, gutters, and downspouts; and removal of moss or snow;

• Other incidental cleaning or washing.

• Dirt;

• Moss;

• Old paint;

• Rust.

• Worker hours engaged in multimedia blasting in a shop are reported separately in classification 3402;

• Pressure washing or sandblasting by a painting contractor as a part of the preparation for painting exterior buildings, structures, or the interior/exterior of tanks is classified in 0504-21;

• Pressure washing as a part of interior building painting contracts is classified in 0521;

• Worker hours engaged in cleaning or washing roofs of single story buildings or removing moss or snow from, single story buildings (when the cleaning or washing is not part of a painting or roofing contract) are reported separately in classification 6602;

• Waterproofing buildings or structures, N.O.C. is classified in 0504-06;

• Pressure washing or sandblasting operations performed in conjunction with and as a part of another type of business such as a foundry, metal goods manufacturer, auto body repair shop, etc., is classified in the applicable classification.

Businesses engaged in lead abatement performed on structures where there are significant amounts of lead-based paint and lead dust.

• Must comply with various governmental regulations;

• Preliminary testing of the site to determine the presence of lead and the extent of the contamination;

• Determine which abatement procedure is right for the project;

• Perform abatement procedure;

• All preparation and all cleanup work.

• Encapsulation, which is used on interior surfaces to seal the lead-based paint with a bonding material;

• Enclosure, which is used on interior and exterior surfaces and involves constructing special airtight enclosures made out of gypsum wallboard, plywood paneling, aluminum, vinyl, or wood exterior sidings;

• Component replacement, which involves removing building components such as paneling, moldings, windows, and doors which are coated with lead-based paint and replacing them with new components;

• Chemical removal, abrasive removal, or hand scraping, which are methods to physically remove the lead paint.

• Worker hours engaged in soil remediation work are reported separately in classification 0101;

• Worker hours engaged in asbestos abatement are reported separately in classification 0512;

• Lead abatement as part of a painting contract for interior/exterior of buildings or structures, or the interior/exterior of tanks is classified in the applicable classification.

Businesses engaged in painting the exterior of all types of buildings or structures not covered by another classification (N.O.C.), regardless of height, including cleaning, coating, or painting the interior/exterior of oil or gas storage tanks, beer vats, or sewage treatment tanks.

• Bridges;

• Churches;

• Factories;

• Residential or commercial buildings;

• Single or multiple story buildings;

• Smokestacks;

• Stadiums;

• Stores;

• Towers;

• Warehouses.

• Applying paint by brush, roller, or spray to a variety of surfaces such as wood, concrete, steel, metal, plaster, stone, or other types of exterior surfaces;

• All preparation work;

• Set up of scaffolding or power lifts;

• Pressure washing;

• Removal of old paint or asbestos;

• Sandblasting;

• Taping or masking;

• Cleanup work.

• Contractors engaged in waterproofing buildings or structures, N.O.C. are classified in 0504-06;

• Pressure washing services or sandblasting of buildings or structures are classified in 0504-18;

• Interior painting of buildings is classified in 0521;

• Painting of murals or other artwork on the interior of buildings is classified in 4109;

• Painting of murals or other artwork on the exterior of buildings is classified in 0403.

Applies to contractors engaged in the installation or repair of roofing material on all types of new or existing buildings or structures. Roofing materials include, but are not limited to, felt roofing paper, rolled composition, wood, fiberglass or composition shingles or shakes, aluminum or sheet metal, masonry or ceramic tile, tar, and polyurethane foam. Installation of roofing materials varies with the product. Wood, fiberglass and composition shingles are nailed; masonry, slate or ceramic tiles require drilling, nailing or cementing; polyurethane foam is applied by spray then coated with a protective layer of paint-like material; hot tar requires melting in tanks, usually at ground level, then it is pumped or raised by bucket to the roof top and applied by spray or mop; cold apply uses an adhesive to bond roofing membranes to form a roofing system; cold tar is applied by brush, spray or mop; single ply involves large sheets of roofing material which are unrolled on the roof with edges overlapping and seamed; and metal roofing is seam welded or nailed. For purposes of this classification the term "roofwork" includes repairs to the subroof such as the replacement of trusses, rafters, supports, and sheathing, but excludes the placement of trusses, rafters, supports or sheathing on new building construction. Essentially, when removing the existing roof material from an existing building or structure it is not uncommon to find dry rot or deterioration to parts of the subroof. The repair of the subroof is part of the roof repair or replacement project and is included in this classification. By contrast, when a subroof is constructed on new buildings or structures, this activity is to be reported separately in the classification applicable to the work being performed such as 0510 for wood frame construction or 0518 for nonwood frame construction. This classification includes the installation or on-site maintenance of roofing materials composed of impermeable barriers, sod, soil, and plants, sometimes termed landscape roofing, living roofing, garden roofing, green/environmentally beneficial roofing, brown/biodiverse roofing, or vegetative roofing; and any installation or maintenance of a landscape roofing irrigation system.

This classification excludes roof cleaning, moss or snow removal on single story buildings not incidental to, or part of, a roofing contract which is to be reported separately in classification 6602; roof cleaning or moss removal of multiple story buildings not incidental to, or part of, a roofing contract which is to be reported separately in classification 0504; the installation of gutters and downspouts which is to be reported separately in classification 0519; waterproofing parts of buildings other than roofs which is to be reported separately in classification 0504 and/or 0101; placing roof trusses, rafters, supports and sheathing on new wood frame buildings which is to be reported separately in classification 0510; the application of polystyrene strips used as insulation on mobile homes which is to be reported separately in classification 0512; and placing roof trusses, rafters, supports and sheathing on new buildings, N.O.C. which is to be reported separately in classification 0518.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of iron, steel, or wood radio, television, cellular or water towers, poles, towers and those towers which are not covered by another classification (N.O.C.). Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the foundation/excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, erecting the frame, installation of scaffolding, raising structural members by crane and welding or bolting them into place, and the installation, removal, service and/or repair of antennas, dish units and/or other transmitting/receiving apparatus to the structure. This classification also includes the delivery of material and supplies to the job site when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of a control building or installation of a modular control building which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow the separate reporting of excavation or foundation work irrespective of who performs the work. This classification includes specialty contractors who install, remove, service or repair antennas, dish units and/or other transmitting/receiving apparatus to a structure covered by this classification.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of iron, steel or concrete smokestacks. These structures are part of an industrial complex and facilitate the discharge of combustion vapors, gases, or smoke. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, installation of scaffolding, raising segments into place with a crane and welding or bolting them into place. This classification includes the delivery of material and supplies to the job site and installation of any apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery which is to be reported separately in classification 0603; preliminary clearing of land by a contractor who is not also excavating the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of a control building or installation of a modular control building which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow separate reporting of excavation or foundation work irrespective of who performs the work.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of iron, concrete, steel, or wood windmills or silos. Windmills use the force of wind passing around the rotor blades to turn turbines and produce electric power. These may be built individually or in groups known as "wind farms." Additional apparatus and storage batteries are housed in separate buildings nearby. Silos are large cylindrical structures used to store grain or fodder (silage). They are filled through the top by means of a conveyor. Within the structure, augers and pumps can move the grain to blend, aerate, or feed it out the chute. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, erecting the frame, installation of scaffolding, raising structural members by crane and welding or bolting them into place. This classification includes the delivery of material and supplies to the job site and the installation of apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery which is to be reported separately in classification 0603; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of a control building or installation of a modular control building which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow the separate reporting of excavation or foundation work irrespective of who performs the work.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of oil stills or refineries. These facilities are basically composed of multi-story storage tanks, chimneys, pipelines, separating apparatus and steam generating systems. They receive unprocessed petroleum (crude oil) and convert it into usable products such as gasoline, kerosene, wax, grease and chemical feed stocks. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation and other concrete, on-site fabrication and assembly of parts, erecting framework, installation of scaffolding, raising structural members by crane and welding or bolting them into place. This classification includes the delivery of material and supplies to the job site and the installation of apparatus in an oil still or refinery when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery or apparatus by a specialty contractor which is to be reported separately in classification 0603; plant maintenance contract work as described in classification 0603; preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of control or pump houses and other buildings not part of the main processing plant which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow separate reporting of excavation or foundation work irrespective of who performs the work.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of blast furnaces and metal burners. These are tall, very heavy gauge, cylindrical steel structures in which heated air and combustible fuels are combined to produce the heat necessary to separate the usable material in metal ores from the waste products. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, erecting the frame, installation of scaffolding, installation of a brick lining, raising structural members by crane and welding or bolting into place. This classification includes the delivery of material and supplies to the job site and the installation of apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery which is to be reported separately in classification 0603; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of additional buildings as part of an ore reduction or metal producing facility which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow separate reporting of excavation or foundation contractors irrespective of who performs the work.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of elevated railways, trams, lifts or similar conveyances. An elevated railway can be a full scale railroad or a smaller scale system such as a recreational monorail. For the purposes of this classification, trams are overhead cable cars, and lifts are similar to the typical ski lift. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, erecting frames and supports (metal or concrete), installation of scaffolding, raising structural members by crane and welding or bolting them into place, and installing and securing tracks, cables or pulley systems. This classification includes the delivery of material and supplies to the job site and the installation of apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery which is to be reported separately in classification 0603; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; or the construction of a control building or installation of a modular control building which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow separate reporting of excavation or foundation contractors irrespective of who performs the work.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of all types of exterior tanks not covered by another classification (N.O.C.). These tanks may be part of water storage and distribution systems, chemical or petroleum processing and storage operations, or other industrial applications. This classification includes the erection or construction of tanks that are elevated on structural piers and those that rest on the ground. These tanks may be constructed singly or in groups known as "tank farms" which are common to the petroleum industry. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, erecting the frame, installation of scaffolding, and raising structural members by crane and welding or bolting them into place. This classification includes the delivery of material and supplies to the job site and installation of apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery which is to be reported separately in classification 0603; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of a control building or installation of a modular control building which is to be reported separately in the applicable construction classification.

Special note: This classification does not allow separate reporting of excavation or foundation contractors irrespective of who performs the work.

Applies to contractors engaged in the installation, construction or erection, dismantling, maintenance or repair of nonmobile cranes and derricks for commerce and industrial use. Cranes and derricks can be very similar in that they are both defined as machines for hoisting and moving heavy objects through the use of stationary or movable booms equipped with cables. An object, sometimes weighing many tons, can be secured to the cables and moved into position along the length of a stationary boom or to another location within the reach of a movable boom. A derrick, however, can also be a permanent framework over an opening, such as an oil-drilling operation, to support boring equipment. The cranes included in this classification are those that are permanently installed at a marine port, cargo handling facility or an industrial facility to move supplies, cargo containers, or heavy objects (vertically or horizontally) that are being assembled and must pass through the length of a building to complete the process. Work contemplated by this classification includes, but is not limited to, the placement of forms and reinforcing steel for a foundation (in the case of some structures described above, the additional reinforcing required to support the crane is usually contemplated in the plan for the building's foundation where the crane is being anchored), on-site fabrication and assembly of parts, erecting the frame, installation of scaffolding, raising structural members by hoist and welding or bolting them into place. This classification includes the delivery of material and supplies to the job site and installation of apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the operation of mobile cranes which is to be reported in classification 3506, the installation of machinery which is to be reported separately in classification 0603; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; and delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification.

Special note: This classification does not allow separate reporting of excavation or foundation contractors irrespective of who performs the work.

Applies to contractors engaged in the construction or erection, dismantling, maintenance or repair of metal or wood water cooling towers or vertical structures. These structures are usually part of an industrial complex in which water is used as a cooling element in a manufacturing process. The water, which absorbs heat from the machinery being cooled, can be circulated and reused after is has been channeled through a cooling tower to be chilled sufficiently. A common design allows the hot water to tumble down numerous open louvers or steps to lower its temperature. These towers are often composed of prefabricated parts which are delivered to the site and then assembled by bolting or welding together, then the necessary motors, pipes, fans and pumps are installed. Work contemplated by this classification includes, but is not limited to, clearing of land (if done by the excavation contractor), excavating for the foundation, the placement of forms, installation of reinforcing steel, pouring and finishing the foundation, on-site fabrication and assembly of parts, erecting the frame, installation of scaffolding, raising structural members by crane and welding, bolting or otherwise fastening them into place. This classification includes the delivery of material and supplies to the job site and installation of apparatus onto a structure covered by this classification when done by employees of an employer having operations subject to this classification.

This classification excludes the felling of timber which is to be reported separately in the applicable logging classification; the installation of machinery which is to be reported separately in classification 0603; the preliminary clearing of land by a contractor who is not also excavating for the foundation which is to be reported separately in classification 0101; delivery of material to the site by employees of a material supplier or a common carrier which is to be reported separately in the applicable classification; and the construction of other related buildings at the project site which is to be reported separately in the applicable construction classification.

Special notes: This classification does not allow separate reporting of excavation or foundation irrespective of who performs the work. Construction of a water cooling structure that uses a horizontal rather than tower-like design is to be reported separately in classification 0518.

Applies to contractors engaged in the construction, maintenance or repair of overhead telephone or telegraph lines, poles and towers. Work contemplated by this classification includes, but is not limited to, clearing a right of way (excluding logging-type operations), boring holes for poles to be set in, installing cross arms, insulators and brackets on poles (which may be wood or metal), setting poles or towers into position, installing guy wires if necessary, stringing the lines, incidental tree topping, tying into the low-voltage power source, and making service connections when done by employees of an employer having operations subject to this classification. Towers may be of a solid wall, cylindrical steel construction or of a fabricated steel cross member design reaching a height of about 50 feet, and are secured to a concrete pad or set into the ground. They may be used to elevate the lines to cross long distances or to support microwave antennae or receivers.

This classification excludes specialty contractors engaged in any single phase of the work described above: Land clearing and grading operations which are to be reported separately in classification 0101; erection of poles or towers which is to be reported separately in classification 0508; drilling holes which is to be reported separately in classification 0103; tree topping which is to be reported separately in classification 0106; service connections which are be reported separately in classification 0608; underground telephone line installation which is to be reported separately in classification 0107; and the felling of timber which is to be reported separately in the applicable logging classification.

Special note: If done by a telephone or telegraph company the work described above is included in classification 1303. A contractor engaged in the installation of electric and/or cable television overhead lines in addition to telephone and telegraph lines is to be reported in classification 0509-03. If a specialty contractor is only stringing telephone or telegraph lines, and not erecting poles or towers, classification 0509-00 is still applicable.

Applies to contractors engaged in the construction, maintenance or repair of overhead television lines, poles and towers. Work contemplated by this classification includes, but is not limited to, clearing a right of way (excluding logging-type operations), boring holes for poles to be set in, installing cross arms, insulators and brackets on poles (which may be wood or metal), setting poles or towers into position, installing guy wires if necessary, stringing the lines, incidental tree topping, tying into the low-voltage power source, and making service connections when done by employees of an employer having operations subject to this classification. Towers may be of a solid wall, cylindrical steel construction or of a fabricated steel cross member design reaching a height of about 50 feet, and are secured to a concrete pad or set into the ground. They may be used to elevate the lines over long distances or to support microwave antennae or receivers.

This classification excludes specialty contractors engaged in any single phase of the work described above: Land clearing and grading operations which are to be reported separately in classification 0101; erection of poles or towers which is to be reported separately in classification 0508; drilling holes which is to be reported separately in classification 0103; tree topping which is to be reported separately in classification 0106; service connections which are to be reported separately in classification 0601; underground television line installation which is to be reported separately in classification 0107; and the felling of timber which is to be reported separately in the applicable logging classification.

Special note: If done by a cable television company the work described above is included in classification 1305. A contractor engaged in the installation of overhead electric and/or telephone or telegraph lines in addition to overhead television lines is to be reported in classification 0509-03. If a specialty contractor is only stringing overhead television lines, and not erecting poles or towers, classification 0509-01 is still applicable.

Applies to contractors engaged in the construction, maintenance or repair of overhead electric transmission lines, poles and towers. Work contemplated by this classification includes, but is not limited to, clearing a right of way (excluding logging-type operations), boring holes for poles to be set in, installing cross arms, insulators and brackets on poles (which may be wood or metal), setting poles or towers into position, installing guy wires if necessary, stringing the lines, installing circuit breakers and transformers, incidental tree topping, tying into the high-voltage power source, and making service connections when done by employees of an employer having operations subject to this classification. Towers may be of a solid wall, cylindrical steel construction or of a fabricated steel cross member design reaching a height of about 50 feet, and are secured to a concrete pad or set into the ground. They may be used to elevate the lines over long distances or to support electric power distribution apparatus.

This classification excludes specialty contractors engaged in any single phase of the work described above: Land clearing and grading operations which are to be reported separately in classification 0101; erection of poles or towers which is to be reported separately in classification 0508; drilling holes which is to be reported separately in classification 0103; tree topping which is to be reported separately in classification 0106; underground electric line installation which is to be reported separately in classification 0107; and the felling of timber which is to be reported separately in the applicable logging classification.

Special note: If done by an electric power company the work described above is included in classification 1301. A contractor engaged in the installation of overhead telephone or telegraph lines and/or television lines in addition to overhead electric lines is to be reported in classification 0509-03. If a specialty contractor is only stringing overhead electric lines, and not erecting poles or towers, classification 0509-02 is still applicable.

Applies to contractors engaged in the construction, maintenance or repair of more than one type of overhead transmission line, including poles and towers which are not covered by another classification (N.O.C.). If the contractor specializes in either telephone, telegraph, television or electric lines, they can be specifically defined elsewhere within classification 0509. Work contemplated by this classification includes, but is not limited to, clearing a right of way (excluding logging-type operations), boring holes for poles to be set in, installing cross arms, insulators and brackets on poles (which may be wood or metal), setting poles or towers into position, installing guy wires if necessary, stringing the lines, incidental tree topping, installing circuit breakers and transformers, tying into the power source, and making service connections when done by employees of an employer having operations subject to this classification. Towers may be of a solid wall cylindrical steel construction or of a fabricated steel cross member design reaching a height of about 50 feet, and are secured to a concrete pad or set into the ground. They may be used to elevate the lines over long distances or to support microwave antennae, receivers or electric power distribution apparatus.

This classification excludes specialty contractors engaged in any single phase of the work described above: Land clearing and grading operations which are to be reported separately in classification 0101; erection of poles or towers which is to be reported separately in classification 0508; drilling holes which is to be reported separately in classification 0103; tree topping which is to be reported separately in classification 0106; service connections for cable television lines which is to be reported separately in classification 0601; underground line installation which is to be reported separately in classification 0107; and the felling of timber which is to be reported separately in the applicable logging classification.

Special note: If done by a telephone or telegraph company, the work described above is included in classification 1303; if done by a cable television company it is included in classification 1305; if done by an electric utility company it is included in classification 1301. If a specialty contractor is only stringing a combination of types of overhead lines, and not erecting poles or towers, classification 0509-03 is still applicable.

Applies to contractors engaged in wood frame building construction or alterations not covered by another classification (N.O.C.). For the purposes of this classification, wood frame building construction means buildings erected exclusively of wood or wood products. This classification includes all building framing activities done in connection with wood frame building construction including:

• Placement of roof trusses;

• Sheathing roofs;

• Installation of exterior building siding;

• Installation of exterior doors and door frames;

• Installation of windows, window frames, and skylights when performed by framing workers as part of the framing contract on a wood frame building;

• Erection of log home shells at customer's location.

The manufacturing of log homes in a permanent yard which includes peeling the logs, notching the logs with chainsaws, and assembly is to be reported in classification 1003-06.

This classification excludes all other phases of wood frame building construction not listed as part of the framing activities above such as, but not limited to:

• Site preparation and excavation (0101);

• Overhead or underground utilities, asphalt work, or concrete work which is to be reported separately in the applicable classification;

• New landscape work (0301);

• Brick work (0302);

• Stucco work (0303);

• Plumbing work (0306);

• HVAC work (0307);

• Carpet and tile work (0502);

• Exterior painting (0504);

• Roof work (0507);

• Insulation work (0512);

• Interior finish carpentry - Interior doors, cabinets, fixtures or molding (0513);

• Installation of garage doors (0514);

• Installation of sheet metal siding, gutters, and nonstructural sheet metal patio covers/carports (0519);

• Interior painting (0521);

• Electrical work (0601); and

• Wallboard installation, taping or texturing which are to be reported separately in the applicable classifications. For a more thorough description of the activities included and excluded from wood frame building construction, review the Construction Industry Guide.

Special note: Classification 0510 also includes wood frame building alterations or remodel work when the activity involves building new additions. The term "new additions" is defined as adding on to an existing wood frame building (upwards or outwards) in which the use of structural supports and main bearing beams is required. This is distinguishable from classification 0516 - Building repair or carpentry work that typically does not require the placement of structural supports or main bearing beams. The purpose of classification 0516 is to build or rebuild with nonstructural or bearing beams, or to replace an existing portion (including existing structural and bearing beams) of a wood frame building for appearances or as a result of deterioration to make it appear new again. Care should be exercised as the terminology to build, rebuild, remodel, construct or reconstruct is irrelevant to assignment of classification which should recognize what the project actually involves.

• Altering all or part of an existing wood frame building by adding on new additions - 0510;

• Constructing a new wood frame building that never existed - 0510;

• Remodeling all or part of an existing wood frame building without adding on new additions - 0516;

• Altering all or part of an existing wood garage by adding on new additions - 0510;

• Altering the existing interior of a wood frame building by adding exterior additions - 0510;

• Constructing a new wood garage that never existed - 0510;

• Constructing, altering, or remodeling the interiors of nonwood frame buildings - 0516;

• Constructing a new wood carport or wood shed that never existed - 0510;

• Constructing or replacing a wood deck for any type of nonwood building - 0516;

• Constructing or replacing a wood deck on an existing wood house - 0516;

• Construction of a new wood deck by the framing contractor when a new wood house is being built - 0510;

• Installation of windows, window frames, and skylights when performed by framing workers as part of the framing contract of a wood frame building - 0510;

• Installation of nonmetal siding on a new wood frame building or a new addition - 0510;

• Installation of nonmetal siding on an existing structure by:

- A siding contractor – 0510;

- A remodeling contractor with subclassification 0516-02 – 0510;

- A remodeling contractor with subclassification 0516-00 – 0516-00;

• Rebuilding an existing wood carport or wood shed (all or part) with or without new additions - 0516;

• Remodeling all or part of an existing wood garage without adding on new additions - 0516;

• Remodeling the existing interior of a wood frame building without adding exterior additions - 0516.

Applies to construction contractors who have no reportable workers, and have not elected owner coverage for themselves.

The purpose of assigning this classification is to allow the contractor the opportunity to be checked for "account in good standing" status for prime contractor liability. All businesses with active workers' compensation accounts must submit quarterly premium reports by the due dates, including businesses with no worker hours or other exposure to report.

Special note: Any contractor who has reportable workers or elects owner coverage is required to report in the applicable classification.

• Drywall contractors who have no reportable workers and have not elected owner coverage for themselves are classified in 0550-99.

• Contractors and glass merchants engaged in the installation and/or removal of glass in buildings and residences.

• Businesses engaged in glass tinting or the application of tinted plastic film to glass windows and doors in buildings or residences.

This type of work is generally performed by a "glazier" who installs, removes, and/or boards up broken or damaged glass from windows or doors.

• Variety of glass;

• Plastic and similar materials.

• Exterior glass curtain walls on multistory buildings;

• Mirrors;

• Skylights;

• Storm windows;

• Window/door glass;

• Window sashes.

• Glass merchants are classified in 1108;

• Installation of auto glass is classified in 1108 when performed at or away from the glass merchant's shop;

• Glass frosting, etching, or beveling is classified in 1108;

• Tinting or the application of tinted plastic film to auto glass by an auto detailer is classified in 3406;

• Glass manufacturing is classified in 3503; and

• Installation of windows, window frames, and skylights when performed as part of a framing contract on a wood frame building by the framing workers is classified in 0510.

Special note: Care should be exercised when determining if the business is a glass installation contractor or a glass merchant. A glass merchant in classifications 1108 and 0511, does not qualify for classification 5206 "Permanent yard or shop." However, if the business is engaged exclusively as a glass installation contractor, and not as a glass merchant, the contractor's business may qualify for classification 5206 for the storage of materials. For rules on assigning exception classifications, see WAC 296-17-31018.

Applies to contractors engaged in installing insulation or sound proofing materials not covered by another classification (N.O.C.). This classification includes the installation or removal of insulation material for all types of residential or commercial buildings or structures. Insulation materials include, but are not limited to:

• Flexible types in the form of blankets, rolls or quilts;

• Loose fills or mineral substances in granulated, powder, cellulose or fibrous wood forms;

• Pads and bats of mineral wool;

• Slabs of cork board or wood fiber;

• Rigid types such as wood and sugarcane fiberboard or panels; and

• The reflective type often consisting of aluminum foil encased in paper.

The methods of installation include hand, blower, nailing, or cementing with special adhesive.

This classification includes:

• Installation of suspended or acoustical grid ceilings;

• Installation of weather strip and caulking, roof or soffit ventilators, energy efficient doors and related carpentry work done in connection with the weatherization or retrofitting of buildings and residences;

• Application of polystyrene strips placed as insulation on the tops of mobile homes.

This classification excludes:

• Installation of glass windows in buildings which is to be reported separately in classification 0511;

• Energy auditors with no installation or delivery duties who may be reported separately in classification 6303 provided all the conditions of the general reporting rules covering standard exception employees have been met;

• Asbestos abatement which is to be reported separately in classification 0512-01; lead abatement which is to be reported separately in classification 0504; and

• Installation of insulated covering on boilers or steam pipes which is to be reported separately in classification 0306.

Special note: See asbestos certification and training requirements at www.lni.wa.gov.

Applies to contractors engaged in the removal of asbestos. Work contemplated by this classification includes all operations such as, but not limited to:

• Removal of damaged, deteriorated or unwanted existing asbestos coverings and material from buildings and other structures such as, but not limited to, ceilings, walls, partitions, floors, and from around air conditioning and heating ducts;

• Removal of asbestos insulated covering around boilers and steam pipes, asbestos used as insulation, fireproofing, and in various building materials such as floor coverings, ceiling tiles, cement sheeting, granular and corrugated wrap, and acoustical and decorative treatment for walls and ceilings.

This classification excludes:

• Contractors engaged in the installation of boiler and steam pipe insulation coverings who are to be reported separately in classification 0306;

• Lead abatement which is to be reported separately in classification 0504;

• Asbestos abatement as a part of painting the interior or exterior of buildings or structures or the interior/exterior of tanks which is to be reported separately in the applicable classification.

Special note: See asbestos certification and training requirements at www.lni.wa.gov.

Applies to contractors engaged in interior finish carpentry work for all types of buildings. Generally, the interior finish carpentry work begins after the drywall, taping, texturing, and painting or wallpapering is complete. This classification includes a variety of interior finish or trim carpentry work including, but not limited to, installation of:

• Cabinets such as kitchen, medicine, laundry and storage;

• Closet organizers;

• Filing systems;

• Hardwood counters and flooring;

• Interior doors and door frames;

• Interior fixtures such as towel bars and tissue holders;

• Stair railings, posts and banisters;

• Wood fireplace mantels;

• Wood paneling, wainscoting, and molding.

Included in this classification is the installation of countertops as described in classification 0502, when part of a contract which includes the installation of cabinets or other interior finish or carpentry work. Also included is the finishing and/or refinishing of hardwood floors.

Excluded from this classification are the following types of work which are to be reported in the applicable classification:

• Countertop installation as described in classification 0502 and not as part of a cabinet installation contract;

• Countertop installation as described in classification 0302;

• Carpentry work on the exterior of a building;

• Concrete;

• Electrical;

• Framing interior walls;

• Garage or exterior door installation;

• Glazing;

• Insulation;

• Masonry;

• Painting;

• Plastering;

• Plumbing;

• Taping and texturing;

• Wallboard.

Special notes: Generally, displays or showrooms are maintained where the contractors store their materials. It is common for contractors subject to this classification to sell some interior finish-related products, but the intent of these areas is not to sell products to walk-in customers. This classification includes the installation of cabinet display areas or showrooms which provide prospective customers an opportunity to inspect the quality of workmanship and products carried by the contractor. Sale of these products by an interior finish contractor is included in classification 0513. Classifications 2009, 6309, or similar store classifications, are not to be assigned to a contracting business. If all the conditions of the general reporting rule covering standard exception employees have been met, employees engaged exclusively in showing the display areas or showrooms to customers are to be assigned classification 6303.

Contractors who operate a wood cabinet manufacturing or assembly shop away from the construction site are to be assigned classification 2907 for the shop manufacturing work. When a contractor's business is assigned classification 2907 for the shop operation, then classification 5206, "Permanent yard or shop" may no longer be applicable to the contractor's business.

Applies to contractors engaged in the installation, service or repair of garage or overhead doors made of wood or metal. As part of a new construction project, the installation usually occurs before the building or structure is painted. Garage or overhead door installation can also occur as a replacement to an existing door or as an alteration or addition to a building or structure. The process involves installing door tracks on both sides of the doorway, inserting the door, which usually consists of panels or sections, into the tracks, and attaching panels or sections to one another. This classification also includes the installation of automatic door openers when performed as a part of the garage or overhead door installation contract, and by the same contractor installing the doors.

This classification excludes the installation, service or repair of commercial automatic door openers when it is not performed as a part of the garage or overhead door installation contract which is to be reported separately in classification 0603; the installation, service or repair of residential automatic door openers when it is not performed as a part of the garage or overhead door installation contract which is to be reported separately in classification 0607; the installation of exterior glass doors and door frames such as nonautomatic and automatic opening doors at retail establishments or commercial buildings which are to be reported separately in classification 0511; the installation of interior or exterior doors and door frames when performed by a framing contractor as part of framing a wood frame building which is to be reported separately in classification 0510; the installation of interior doors and door frames which is to be reported separately in classification 0513; the installation of wood, fiberglass or metal exterior doors as part of a nonwood frame building when performed by employees of the general contractor which is to be reported separately in classification 0518; and the repair or replacement of wood, fiberglass or metal doors on an existing building which is to be reported separately in classification 0516.

Applies to contractors engaged in the installation, removal, alteration, and/or repair of nonstructural additions to buildings or structures. Nonstructural metal additions include, but are not limited to, fire escapes, staircases, balconies, railings, roll down shutters, window or door lintels, protective window or door gratings, bank cages, decorative elevator entrances or doors, permanent stadium seating, and wall facades and facings. Generally, the process involves bolting, screwing, riveting, or welding these additions to the interior or exterior of buildings or structures. Contractors who operate a shop to prefabricate the additions are to be assigned the classification applicable for the shop manufacturing work being performed. When a contractor's business is assigned a manufacturing classification for shop operations, classification 5206, "Permanent yard or shop," is no longer applicable to the contractor's business for the storage of materials or repair of equipment.

This classification excludes sheet metal installation such as siding, gutters and downspouts, and nonstructural sheet metal patio covers/carports which are to be reported separately in classification 0519; the installation, repair or dismantling of portable bleachers or stages which is to be reported separately in classification 0603; and the erection of commercial metal carports, service station canopies, and structural iron or steel work as part of a building or structure which is to be reported separately in classification 0518.

Applies to contractors engaged in building repair, remodeling and carpentry work.

This classification applies to:

• Remodeling and carpentry-related framing work on concrete, brick and steel buildings.

• Wood framed building renovation and remodeling projects when the skeleton framework is not being modified or altered.

Typical projects include, but are not limited to:

• Interior building demolition ("strip outs") involving only the removal of interior walls, partitions, interior trim, cabinetry, doors, flooring and related construction materials;

• Converting a room from one use to another, such as a bedroom to a study, or a garage to a family room;

• Enlarging or reconfiguring a room by removing or adding an interior wall;

• Upgrading a kitchen or bathroom;

• Repairing or installing all types of siding on an existing structure;

• Adding structures such as a wooden deck to an existing building, screening a porch, installing a wood patio cover, or assembling sheet metal tool or garden sheds.

Contractors subject to this classification use a variety of dimensional lumber and wood products, light weight metal studs and plastic and fiber reinforced boards, metal fasteners (nails, screws and bolts), and metal reinforcing or support straps such as joist hangers and post brackets.

This classification includes:

• Framing of wood structures with light weight metal studs.

• Installation of earthquake tie downs on residential buildings.

• Specialty service providers or contractors engaged in providing general repair services or performing remodeling projects on buildings and structures.

Special note: Businesses assigned to this classification are distinguishable from those assigned to classification 0516-02, in that 0516-02 requires each phase of construction to be reported separately in the appropriate construction classification(s).

Contractors that build new wood structural additions as part of a remodeling contract must also report each phase separately. They must use classification 0510-00 to report the new framing. All other phases of the construction must be reported separately in the appropriate classification(s) as noted in the text of classification 0516-02.

Contractors that build new structural additions and also repair and remodel existing structures will be assigned both 0510-00 and 0516-02 in addition to any other appropriate classification. 0516-00 will not be assigned to these employers.

Subclassifications 0516-00 and 0516-02 cannot be active on an account at the same time.

Applies to contractors engaged in the installation and/or repair of wood playground equipment. Work contemplated by this classification begins after the area of land has been excavated and/or cleared and includes installing wood playground equipment at private residences and in public settings such as, but not limited to, schools, parks, day care centers, churches, and hotels. This classification usually includes a variety of playground equipment comprised of treated wood beams, poles, posts, and a variety of dimensional lumber used in building swings, forts, stationary and swinging bridges, balance beams, climbing towers, slides, and rope and tire walks. Generally, the process involves setting poles or posts with use of a post hole digger, backhoe or tractor equipped with an auger. The poles or posts may be set in concrete. Depending on the piece of equipment being built, use of beams, planks, dimensional lumber, rope, chains, tires, and metal bars or rings, are securely attached with nails, screws, bolts or eye hooks. This classification includes the building of borders surrounding the playground equipment area with beams or railroad ties and the spreading of pea gravel, sand or wood chips underneath the equipment.

This classification excludes the installation of metal playground equipment which is to be reported separately in classification 0603, and the excavation or clearing of land which is to be reported separately in classification 0101.

Applies to contractors engaged in building repair, remodeling and carpentry work, not covered by another classification (N.O.C.).

This classification applies to:

• Remodeling and carpentry-related framing work on the interior of concrete, brick and steel buildings.

• Wood framed building renovation and remodeling projects when the skeleton framework is not being modified or altered.

Typical projects include, but are not limited to:

• Interior building demolition ("strip outs") involving only the removal of interior walls, partitions, interior trim, cabinetry, doors, flooring and related construction materials.

• Converting a room from one use to another, such as a bedroom to a study, or a garage to a family room.

• Enlarging or reconfiguring a room by removing or adding an interior wall.

• Upgrading a kitchen or bathroom.

• Adding structures such as a wooden deck to an existing building, screening a porch, installing a wood patio cover, or assembling sheet metal tool or garden sheds.

Contractors subject to this classification use a variety of dimensional lumber and wood products, light weight metal studs and plastic and fiber reinforced boards, metal fasteners (nails, screws and bolts), and metal reinforcing or support straps such as joist hangers and post brackets.

This classification includes:

• Framing of wood structures with light weight metal studs.

• Installation of earthquake tie downs on residential buildings.

• Specialty service providers or contractors engaged in providing general repair services or performing remodeling projects on buildings and structures.

Contractors performing remodeling or alteration projects which involve new structural additions must report that activity in classification 0510-00 and any other applicable classification(s) noted above.

Special note: Proper reporting in multiple construction classifications requires special care in maintaining required records. If these records have not been maintained as required, all worker hours for which the records were not maintained will be reassigned to the highest rated classification applicable to the work that was performed.

Averages, estimates or percentages are not allowed.

Applies to the set up of factory built housing units such as mobile/manufactured homes, modular homes, or prefab cedar homes by contractors who work independently from a sales dealership or by employees of the manufacturer. This classification includes, but is not limited to, delivery of the factory built unit when performed by the set up contractor. The set up process includes placement of the unit or unit sections on blocks or foundations; joining the interior and exterior sections which may involve incidental placement of ridge cap, siding, trim boards, moldings, and interior seams; plumbing and electrical connections; and the installation of skirting, awnings or decks.

This classification excludes mobile home or factory built housing sales dealerships who set up and/or deliver the unit to a sales location or customer's site which are to be reported separately in classification 3415; the delivery of a mobile home or other factory built housing unit by a trucking service which is to be reported separately in classification 1102; the pouring of foundations; and/or the construction of nonstructural sheet metal patio covers/carports, garages or storage sheds regardless if performed by employees of the set up contractor or by another contractor which is to be reported separately in the applicable classification.

Applies to contractors engaged in raising, moving and underpinning buildings. Work contemplated by this classification includes a variety of services involving the change of a building's elevation, location or support structure including incidental shoring and removal or rebuilding of walls, foundations, columns or piers. Employees of the contractor responsible for the overall completion of the project are to be reported in this classification. Underpinning is a process to correct wall cracks, foundation settling or collapse of a building or structure. Generally, underpinning involves one of two methods. In the first method, earth around a foundation is removed to permit construction of a new foundation to replace the old one or to allow for the installation of subfoundations to support the existing earth. This would include masonry or concrete work, blasting (when required) and shoring of surrounding ground and building or structure to prevent cave-ins while foundation work is being performed. The second method deals with steel or wooden beams being inserted through a lower point of the building or structure. The beams are raised and supported by jacks until the foundation is relieved of some or all of its ground pressure. Building raising or moving is a process to change a building's position, either raised to a new elevation in place or moved to a new site, or both. Workers, subcontractors or utility companies will first disconnect all utilities from the building or structure to be moved. Workers will remove all detachable items and open foundation walls to allow metal or wood beams to be placed under the floor structure. Once beams are placed, hydraulic jacks are used to lift the building or structure clear of the old foundation high enough for a new foundation to be constructed, or high enough to allow the carrying vehicle (trailer) to be placed under the beams if it is to be moved. The trailer is moved along a previously graded and cleared path to the new location. The building or structure is then set down on a new foundation which is usually constructed by a separate contractor. Miscellaneous repair work is performed and utilities are reconnected.

This classification excludes contractors engaged in clearing paths, grading and excavation work who are to be reported separately in classification 0101; contractors who disconnect or hook-up underground gas, water or power lines who are to be reported separately in classification 0107; contractors who construct concrete foundations for wood frame or nonwood frame buildings who are to be reported separately in classification 0217, or in classification 0518 as applicable; and contractors engaged in the delivery and set up of factory built housing units who are to be reported separately in classification 0517.

Applies to work on nonwood frame buildings and structures (without regard to size or number of stories) when the superstructure (skeleton framework or building shell) consists of concrete, iron or steel, or a combination of concrete, iron, steel and/or wood, as well as all other building construction not covered by another classification. It includes, but is not limited to, structures such as:

• Waste treatment and waste disposal plants;

• Fish hatcheries;

• Public and commercial (covered and multilevel) parking lots and parking garages;

• Stadiums;

• High-rise office and housing complexes.

Activities include, but are not limited to:

• The set up and tear down of forms;

• Placement of reinforcing steel, rebar, or wire mesh;

• Pouring and finishing concrete within the building or structure such as:

− Foundations;

− Monolithic slabs;

− Ground supported floor pads;

− Precast or poured in place load bearing floors or wall panels;

− Columns;

− Pillars;

− Balconies;

− Stairways.

• The raising and/or standing up (by crane or boom) of concrete:

− Tilt-up walls;

− Precast floors and wall portions;

− Metal frames.

• Securing frame and slabs by:

− Bolts;

- Framing anchors;

- Seismic bearings, springs, and cylinders;

− Rivets;

− Welds.

All other phases of construction not specific to pouring a concrete foundation, placing or joining the iron or steel framework, or attaching concrete slabs, steel, iron, or wood to building shell, are classified separately according to their phase of construction.

The following structures are classified as indicated:

• 0701 applies to dams.

• 0201 applies to bridges, trestles, viaducts, tunnels, breakwaters, jetties, levees, and dikes.

• 0202 applies to piles, wharfs, piers, and docks.

• 0508 applies to towers, smoke stacks, blast furnaces, silos, windmills, exterior tanks, and derricks.

Classification 0518 is a construction industry classification (see WAC 296-17-31013).

Subclassification 0518-01 excludes:

• Nonstructural sheet metal patio cover/carports which are reported separately in classification 0519;

• Wood carports which are reported separately in the applicable framing/siding classifications.

Classification 0518 is a construction industry classification (see WAC 296-17-31013).

Applies to contractors engaged in wrecking or demolishing iron, steel, concrete, or wood buildings or structures not covered by another classification, whether dismantling board by board, by bulldozer, by crane equipped with a steel ball, explosives, or other means.

Work contemplated by this classification includes:

• Incidental sales of materials;

• Burning or hauling away of debris;

• Barricading the site and walkways;

• Guards and flaggers on-site and in adjacent areas when dismantling operations are underway.

Classification 0518 is a construction industry classification (see WAC 296-17-31013).

• Contractors engaged in the installation or repair of sheet metal work in building construction, not covered by another classification (N.O.C.)

• Interior and exterior sheet metal work for residential or commercial buildings; including sheet metal work on wood frame, pole, and nonwood frame buildings.

• Installation of metal siding, gutters, and downspouts;

• Interior wall panels (such as the back splash behind stoves and sinks);

• Metal industrial shelving;

• Nonstructural sheet metal patio covers/carports; and

• Stainless steel counter tops.

• Sheet metal work as part of heating and ventilation and air conditioning systems installation is classified in 0307;

• Installation of aluminum or sheet metal as part of roof work is classified in 0507;

• Installation of light weight sheet metal tool sheds is classified in 0516; and

• Installation of commercial metal carports and service station canopies is classified in 0518.

Businesses painting building interiors regardless of the height inside the building.

• Churches;

• Coliseums;

• Factories;

• Single and multiple story residential houses and commercial buildings;

• Stores;

• Theaters;

• Warehouses.

• Bridges;

• Grain silos;

• Refineries;

• Service station canopies;

• Tanks;

• Water towers.

• Applying paint by brush, roller or spray to a variety of surfaces such as wood, wallboard, plaster, stucco, metal, concrete, or other types of surfaces found within the interior of a building;

• All preparation work such as setting up scaffolding, sanding, removing old paint or asbestos, masking with tape or other materials, and cleanup work;

• Hanging or removing wallpaper, including cleaning or scraping walls to ensure the wallpaper will adhere to the surface; applying adhesive to the wall surface, the wallpaper, or both; matching patterns and applying wallpaper to the surface; brushing smooth to remove air pockets; and repeating until the entire job is complete;

• Refinishing or resurfacing of tubs, sinks, appliances, and countertops.

• Worker hours engaged in exterior painting of buildings or structures are reported separately in classification 0504. Classifications 0521 and 0504 may be assigned to the same employer provided accurate records are maintained which distinguish interior building painting contracts from exterior building or structure painting contracts;

• Worker hours engaged in waterproofing buildings or structures N.O.C., pressure washing services or sandblasting of buildings or structures, lead paint abatement, and the exterior painting of buildings or structures, including interior/exterior tanks which are all reported separately in classification 0504;

• Painting murals or other artwork on the interior of buildings is classified in 4109;

• Worker hours engaged in painting murals or other artwork on the exterior of buildings are reported separately in classification 0403.

• See asbestos certification and training requirements at www.lni.wa.gov.

• For rules on assigning and reporting in more than one basic classification, see WAC 296-17-31017 Multiple classifications.

• Classification 0521 is a construction industry classification (see WAC 296-17-31013).

Applies to contractors engaged in the installation or repair of wallboard. This classification includes the installation of wallboard, drywall, or sheetrock in all types of residential or commercial buildings or structures. The process consists of cutting wallboard with a utility knife, hacksaw, or power saw to the desired size and then butting material into place and nailing or screw fastening to wood or metal wall studs. Electrical box, window, or door openings are cut out where needed. Installation may require the use of scaffolding, ladders, specialty lifts, or stilts when working at heights, including the use of T holders or hydraulic lifts to hold material being installed on ceilings. This classification also includes wallboard scrapping (picking up and discarding unused portions of wallboard remnants or scraps) at the construction site when performed by employees of the wallboard contractor.

This classification excludes delivery of materials to the construction site by material dealer employees which is to be reported separately in the applicable delivery classification; delivery and stocking of materials to the construction site when performed by employees of the wallboard contractor which is to be reported separately in classification 1101; wallboard taping (including priming and texturing when performed by employees of the wallboard contractor) which is to be reported separately in classification 0541 or 0551; wallboard scrapping by nonwallboard contractor employees which is to be reported separately in the applicable construction debris cleanup classification; plastering, stuccoing or lathing work which is to be reported separately in classification 0303; and the framing of nonbearing walls when performed by the drywall contractor which is to be reported separately in classification 0516.

Applies to contractors engaged in taping wallboard in residential or commercial buildings or structures. The process of taping occurs after wallboard, drywall, or sheetrock has been installed and involves taping the seams, and spreading joint compound over the seams and nail or screw heads. When dry, the seams are sanded to remove any rough edges. This classification includes the following activities when performed by employees of a wallboard contractor and part of the taping process which includes wallboard texturing (a putty-like material that is sprayed over the prepared wallboard in a clump-like application and smoothed with a trowel or putty knife), and wallboard priming (the application of an undercoating that may be applied either directly to the wallboard or after it has been textured). This classification also includes incidental painting when performed by employees of a wallboard contractor and part of the taping process.

This classification excludes wallboard installation which is to be reported separately in classification 0540 or 0550; wallboard priming and texturing not performed by employees of the wallboard contractor and part of the taping process which is to be reported separately in classification 0521; interior painting which is to be reported separately in classification 0521; and wallboard scrapping by nonmaterial dealer employees which is to be reported separately in classification 0540 or 0550.

Applies to contractors engaged in the installation or repair of wallboard. This classification includes the installation of wallboard, drywall, or sheetrock in all types of residential or commercial buildings or structures. The process consists of cutting wallboard with a utility knife, hacksaw, or power saw to the desired size and then butting material into place and nailing or screw fastening to wood or metal wall studs. Electrical box, window, or door openings are cut out where needed. Installation may require the use of scaffolding, ladders, specialty lifts, or stilts when working at heights, including the use of T holders or hydraulic lifts to hold material being installed on ceilings. This classification also includes wallboard scrapping (picking up and discarding unused portions of wallboard remnants or scraps) at the construction site when performed by employees of the wallboard contractor.

This classification excludes delivery of materials to the construction site by material dealer employees which is to be reported separately in the applicable delivery classification; delivery and stocking of materials to the construction site when performed by employees of the wallboard contractor which is to be reported separately in classification 1101; wallboard taping (including priming and texturing when performed by employees of the wallboard contractor) which is to be reported separately in classification 0541 or 0551; wallboard scrapping by nonwallboard contractor employees which is to be reported separately in the applicable construction debris cleanup classification; plastering, stuccoing or lathing work which is to be reported separately in classification 0303; and the framing of nonbearing walls when performed by the drywall contractor which is to be reported separately in classification 0516.

Applies to drywall contractors who have no reportable workers, and have not elected owner coverage for themselves.

The purpose of assigning this classification is to allow the contractor the opportunity to be checked for "account in good standing" for prime contractor liability. All businesses with active workers' compensation accounts must submit quarterly premium reports by the due dates, including businesses with no worker hours or other exposure to report.

Special note: Any contractor who has reportable workers or elects owner coverage is required to report in the applicable classification.

Applies to contractors engaged in taping wallboard in residential or commercial buildings or structures. The process of taping occurs after wallboard, drywall, or sheetrock has been installed and involves taping the seams, and spreading joint compound over the seams and nail or screw heads. When dry, the seams are sanded to remove any rough edges. This classification includes the following activities when performed by employees of a wallboard contractor and part of the taping process which includes wallboard texturing (a putty-like material that is sprayed over the prepared wallboard in a clump-like application and smoothed with a trowel or putty knife), and wallboard priming (the application of an undercoating that may be applied either directly to the wallboard or after it has been textured). This classification also includes incidental painting when performed by employees of a wallboard contractor and part of the taping process.

This classification excludes wallboard installation which is to be reported separately in classification 0540 or 0550; wallboard priming and texturing not performed by employees of the wallboard contractor and part of the taping process which is to be reported separately in classification 0521; interior painting which is to be reported separately in classification 0521; and wallboard scrapping by nonmaterial dealer employees which is to be reported separately in classification 0540 or 0550.

• Electrical wiring of buildings;

• Electrical wiring not covered by another classification (N.O.C.);

• Permanent flood lighting.

• General electrical work, including installation, service or repair at residential and commercial settings;

• Installation, service or repair of extension lines and the hookup of electrical wiring; from where the utility company's lines end to the structure's power meter and extension to the inside or outside of the building or its exterior setting;

• Installation of the breaker panel, fuses, plugs and snap switches, rough-in electrical work to include the stringing of insulated or encased wiring and mounting of plug-in or switch housing boxes, installation of plug-in, dimmer and switch units;

• Installation of light fixtures, recessed canister and fluorescent lighting, track lighting, and other interior and exterior lighting fixtures;

• Installation of ceiling fans, and the installation of residential and commercial appliances such as built-in microwaves, dishwashers, electric ovens, and oven hoods;

• Installation of permanent flood lighting at stadiums and parks. Generally, flood lighting fixtures are mounted onto poles, buildings, or other structures; the erection or construction of those structures is not included in this classification.

• Cable pullers;

• Circuit finders;

• Drill guns;

• Measuring tools;

• Pliers;

• Saws;

• Screw drivers;

• T strippers;

• Trucks.

• Installation of overhead or underground power lines and poles by an electric utility company is classified in 1301;

• Installation of overhead power lines by a nonelectric utility contractor is classified in 0509;

• Installation of underground power lines by a nonelectric utility contractor is classified in 0107.

Installation and repair of electrical machinery and auxiliary apparatus. Generally, this type of work occurs at industrial or commercial plants, power plants, or sites where large machinery is installed. This classification includes extending insulator or encased wiring or cable from the power meter, breaker or control panel to the physical location where the machinery is installed, and incidental wiring of the machinery or auxiliary apparatus.

• Erection or set up of temporary floodlights away from the business premises. Uses of temporary floodlights and searchlights include, but are not limited to, advertising grand openings or special sales at shopping malls, auto dealers, grocery and outlet stores, marking the location of special events such as carnivals or concerts, or at construction project sites.

• Compressors;

• Converters;

• Generators;

• Heavy motors;

• Power switchboard equipment;

• Temporary floodlights or searchlights;

• Transformers.

• Generators;

• Personal protective equipment;

• Trailers;

• Trucks.

• Installation or repair of electrical machinery and auxiliary apparatus;

• Set up of temporary floodlights or searchlights - Temporary floodlights or searchlights are mounted on a truck or trailer, and transported to the customer site or location where they operate with use of a generator;

• Extending insulator or encased wiring or cable from the power meter, breaker or control panel to the physical location where the machinery is installed;

• Incidental wiring of the machinery or auxiliary apparatus.

• Businesses engaged in the erection of permanent floodlight fixtures to poles, buildings or structures is classified in 0601-00.

Installation, service or repair of television cable in buildings.

• Installation of television cable lines in residential and commercial buildings;

• Dropping of lines from the pole to the house;

• Mounting of cable control panel boxes to the exterior of buildings;

• Extending cable;

• Mounting multiple line adapter units and relay switches;

• Affixing the cable end for hook-up to televisions and other stereo components.

• Cable pullers;

• Drill guns;

• Measuring tools;

• Pliers;

• Saws;

• Screw drivers;

• T strippers;

• Trucks.

• Installation of underground or overhead television cable lines when performed by a television cable company is classified in 1305;

• Installation of underground television cable lines when performed by a nontelevision cable company contractor is classified in 0107;

• Installation of overhead television cable lines from pole to pole by a nontelevision cable company contractor is classified in 0509.

Installation, service and/or repair of freight or passenger elevators and elevator door bucks in private residences and commercial buildings or structures. Generally, the process begins after the elevator shaft has been erected.

• Cables;

• Doors;

• Door bucks;

• Electrical apparatus and wiring in connection with operation of the elevator;

• Elevator units;

• Hoisting systems;

• Motors.

• Installation or repair of escalators and industrial machinery is classified in 0603;

• Erection of temporary construction elevators as part of a construction project is classified in the applicable phase of construction being supported.

• Installation, service and/or repair of heavy machinery or equipment at a customer's location, not covered by another classification (N.O.C.).

• Millwright work and the service or repair of engines and gas machines. A millwright is a technician who specializes in installing and repairing industrial machinery.

• Wood, metal, and plastic manufacturing plants;

• Fuel refineries;

• Mills.

• Conveyor systems;

• Dairy equipment;

• Escalators;

• Lathes;

• Mill saws;

• Printing presses;

• Wind machines.

• Pouring concrete pads to hold the machinery;

• Cutting and welding brackets and mountings;

• Assembling component parts;

• Incidental electrical connections needed to complete the installation;

• Placement of heavy machinery with cranes or by rigging hoists;

• Calibrating the controls and testing the machinery's operation when done by employees of an employer having operations subject to this classification;

• Dismantling and removal of machinery and equipment covered by this classification.

• Worker hours engaged in store operations of dairy equipment/supply dealers or wind machine dealers are reported separately in classification 6407.

Installation, service and/or repair of dynamos, electrical generators, and turbines at a customer's location. A dynamo is a generator of direct electrical current; a turbine is a mechanism that converts moving fluid into mechanical power.

• Electrical utilities;

• Manufacturing plants;

• Mills;

• Telecommunications companies.

• Pouring concrete pads to hold the machinery;

• Cutting and welding brackets and mountings;

• Assembling component parts;

• Incidental electrical connections needed to complete the installation;

• Placement of heavy machinery with cranes or by rigging hoists;

• Calibrating the controls and testing the machinery's operation when done by employees of an employer having operations subject to this classification;

• Dismantling and removal of dynamos, generators, and turbines.

• Installation of underground or overhead power lines and poles by an electric utility company is classified in 1301;

• Installation of overhead power lines by a nonelectric utility contractor is classified in 0509;

• Installation of underground power lines by a nonelectric utility contractor is classified in 0107.

Businesses engaged in maintaining, repairing, and installing machinery on a long-term contract basis for customers at the customers' location.

• Manufacturing plants;

• Chemical plants;

• Petroleum refineries;

• Food processing plants;

• Mills.

• Cleaning;

• Oiling;

• Regularly scheduled maintenance;

• Replacement of machinery or machinery parts;

• Installing equipment and other mechanical installations that are part of the customer's building when done by employees of an employer having operations subject to this classification.

Installation, dismantling, and/or repair of metal playground equipment, portable bleachers or stages, and above ground swimming pools.

• Merry-go-rounds;

• Monkey bars;

• Slides;

• Swings.

• Boring holes in the ground, usually with an auger, for various pieces of equipment to be set in and held in place with concrete;

• Cutting, welding, drilling, and bolting of tubular steel components which are usually from one to four inches in diameter;

• Fastening on chains, swings, handlebars, sliding surface, platforms, bench seats, or other components;

• Applying any finish material or paint when done by employees of an employer having operations subject to this classification.

Installation of wood playground equipment is classified in 0516.

Installation, dismantling, service, and/or repair of commercial equipment.

• Commercial dishwashing units;

• Bakery or restaurant ovens, stoves, grills, sanitizers, or steam tables;

• Car washing equipment;

• Commercial laundry equipment;

• Electric entry doors;

• Dry cleaning equipment;

• Gas pumps;

• Parimutuel totalizer equipment at horse racing facilities.

• Placing and leveling the equipment;

• Assembly of component parts;

• Connecting or bolting to the wall or floor;

• Making any necessary incidental plumbing or electrical connections;

• Calibrating and testing the equipment when done by employees of an employer having operations subject to this classification;

• Dismantling and removal of commercial equipment;

• Some pieces of equipment in this classification may be large enough that they must be moved and positioned with hoists or cranes.

Applies to establishments engaged as dealers or processors of ferrous and nonferrous scrap metals for resale. Ferrous metals are primarily composed of iron or steel. Nonferrous metals include, but are not limited to, aluminum, brass, bronze, copper, lead, magnesium, pewter, tin, and zinc. If the dealer collects scrap metals from mills, foundries, refineries, or fabricators, they usually leave dumpster containers with the "customer" and pick up the full containers with their own trucks. If they buy scrap from independent collectors, the collectors bring the metals to the dealer's yard. In either case, the metal is weighed, graded, and sorted by type at the dealer's yard. It may be resold as is to customers who occasionally come to the yard; however, it is usually further processed and prepared for shipping to industrial customers. Shipping is done by rail, ship, or common carrier. As an incidental service, scrap dealers may also buy back recyclable goods such as, but not limited to, aluminum cans, glass, and batteries; this activity is included within the scope of this classification when performed by employees of employers subject to this classification. Processing includes one or more of the following operations: Cutting off impure metals or plastic parts with acetylene cutting torches; cutting scraps into smaller pieces with alligator shears or cutting torches; slicing heavier scrap metals or flattened automobiles with hydraulic guillotine shears; crushing auto bodies with crushers; ripping apart large pieces of scrap with shredders; separating metal from rubber, plastic, wood, dirt, and other materials with magnetic separators; removing insulated coverings from copper wire with wire choppers, and compressing scraps into bales with balers. Additional machinery includes, but is not limited to, conveyors, scales, forklifts, tractor-trailer trucks, cranes, electromagnets or grapples, front end loaders, and grinders. Because of recent EPA regulations, instead of melting down metals in their own furnaces, scrap dealers usually ship it to foundries or steel mills that conform with the regulations. However, reduction of metals is included within the scope of this classification if performed by an establishment subject to this classification.

This classification excludes dealers that sell new iron, steel, wire or cable which are to be reported separately in classification 2004; automobile or truck wrecking or dismantling establishments which are to be reported separately in classification 1104; and recycle, collection, and receiving stations (known as buy-back stations) for rags, bottles, paper, and metal containers which are to be reported separately in classification 2102.

Special note: Scrap metal dealers vary widely in the type of metals or usable items they buy and sell. Often the term "junk yards" is used to describe dealers who carry a sizable inventory of used goods, such as, but not limited to, bottles, rags, paper, appliances, nails, rubber, in addition to scrap metal in varying amounts. It is the activity of the business that must be considered when determining the classification, rather than how the business refers to its activities. Receiving/buy-back stations for recyclable items in classification 2102 are different from dealers in classification 0604. Receiving stations buy back only recyclable items which they do not process, other than condensing the materials into bales, and selling it to others.

Applies to establishments engaged in the installation, service and/or repair of vending, coin- or token-operated machines. Operations contemplated by this classification include, but are not limited to, delivering machines to desired location, unloading and setting up machines, servicing machines, collecting money, repairing machines, and restocking product into machines. Coin-operated machines include pay telephone booths, weight machines, juke boxes, change makers, pull tabs, slot machines, and similar gaming devices. Vending machine products include, but are not limited to, soft drinks, candies, sandwiches, stamps, cigarettes, frozen desserts, coffee, and personal hygiene products. This classification also includes the preparation of products such as, but not limited to, salads, sandwiches, cookies, and desserts, and honor snack food services when performed by employees of an employer subject to this classification.

This classification excludes honor snack services operated independently from, and not in connection with, coin-operated vending machine services which are to be reported separately in classification 1101; and the installation of parking meter units which is to be reported separately in classification 0105.

Applies to establishments engaged in the sales and servicing of fire extinguishers and related safety equipment. Operations contemplated by this classification include, but are not limited to, retail and wholesale store operations, field testing services, recharging services, and related safety training. Establishments subject to this classification routinely sell a variety of home and commercial type fire extinguishers, protective clothing, gloves, and hats, specialty shoes, smoke and fire alarms, and first-aid kits. Fire extinguisher sales and service companies may also carry other safety items such as traffic cones, construction and speed signs.

Applies to establishments engaged in the removal and/or replacement of money into coin-operated machines. Operations contemplated by this classification are limited to the collection and replenishing of coins in coin-operated or vending machines. This classification also applies to replenishing currency in automated teller machines (cash machines) and removal of coins from parking meters and pay telephones.

This classification excludes the servicing of machines, placement of products into machines for sale, installation of machines, or any product preparation, which is to be reported separately in the applicable classification; installation of free standing automated teller machines which is to be reported separately in classification 0607; establishments engaged in the construction of structures which house automated teller machines, such as those found in parking lots of shopping centers, which are to be reported separately in the applicable construction classifications.

Applies to establishments engaged in the placement and servicing of coin- or token-operated amusement devices, not covered by another classification (N.O.C.), within stores and shopping malls for use by the general public. Operations contemplated by this classification include, but are not limited to, the installation, service, repair, or removal of the devices, such as, but not limited to, video games, pinball machines, carrousels and small amusement rides for children. Establishments subject to this classification generally are not involved in the operations of arcades or amusement rides. If an establishment subject to this classification also operates a video or amusement arcade, such operations may be reported separately in classification 6406 provided all the conditions of the general reporting rules covering the operation of a secondary business have been met.

Applies to establishments engaged in the installation, service and/or repair of electrical or gas household appliances and to dealers of used electrical or gas household appliances. Many establishments covered by this classification have small retail store operations where they offer reconditioned or second hand appliances for sale, a parts department, and an area where appliances brought into the shop are repaired. Although this classification deals primarily with service away from the shop, the store, parts department and shop operations are included within the scope of this classification. The term "household appliances" includes, but is not limited to, stoves, ovens, ranges, dishwashers, refrigerators, trash compactors, television sets, residential type garage door openers, washing machines, and clothes dryers. This classification also applies to the installation, service or repair of automated teller machines. Repair services provided by establishments subject to this classification may also include related smaller appliances such as video players, portable television sets, stereo systems, microwave and toaster ovens, blenders, coffee makers and mixers. The servicing of water softening systems, coffee and juice machines, and beer taps is also included in this classification.

This classification excludes dealers of new household appliances who are to be reported separately in classification 6306; installation, service, and/or repair of commercial appliances such as those used in laundries, bakeries, and restaurants which is to be reported separately in classification 0603; installation, service, and repair of commercial garage doors and openers which is to be reported separately in classification 0603; installation of water softening systems which is to be reported separately in classification 0306; and small table top or counter top appliance stores which are to be reported separately in classification 6406.

Special note: Classification 0607 is distinguishable from classification 6306-02 operations in that appliance stores covered in classification 6306-02 are engaged primarily in the sales of new appliances. Although classification 6306 includes repair of appliances, most repairs are related to warranty work and represent a minor part of the business. By contrast, the repair of appliances in classification 0607 is the primary activity of the business.

Applies to establishments engaged in the installation, removal, service and/or repair of television antennas or satellite dish receiving units. Operations contemplated by this classification are limited to rooftop installation of television antennas or ground or rooftop-mounted satellite dish reception units. Establishments covered by this classification will generally employ technicians and installers to install systems and trouble shoot reception problems. Equipment is limited primarily to delivery trucks, vans, ladders, and small power and/or hand tools.

This classification excludes specialty contractors who install, remove, service or repair antennas, dish units, and/or other transmitting/receiving apparatus to a structure covered by classification 0508, who are to be reported separately in classification 0508; and establishments engaged in the sale of new console type and big screen televisions who also sell and install antennas which are to be reported separately in classification 6306.

Lock sets and/or dead bolt locks: New installation

Applies to contractors engaged in the installation, removal, service and/or repair of all types of safes or vaults regardless of size or application, private mail or postal boxes, or safe deposit box units within buildings. Safes and vaults are found in businesses such as, but not limited to, banks, jewelry stores, rare coin and stamp stores, grocery stores, and gasoline service stations, as well as in private residences. Services contemplated by this classification include, but are not limited to, safe opening services.

New installation of lock sets and/or dead bolt locks on buildings or structures by contractor or by employees of a locksmith also applies to this classification. The term new installation applies to installing a lock set (locking doorknob) or a dead bolt where none previously existed. The process consists of measuring and marking where the unit is to be placed on the door, boring holes into the door to accept the lock set or dead bolt lock, and installing the lock set unit using a power drill and basic hand tools.

This classification excludes the installation of a replacement lock set or dead bolt lock unit by employees of a locksmith, and locksmith store operations which are to be reported separately in classification 6309.

Applies to contractors and employees of store operations who are engaged in the installation of indoor or outdoor window coverings, such as, but not limited to, blinds, shades, screens, exterior roll shutters and draperies or curtains, but does not include awnings. The process consists of marking the location of covering on the frame or opening, securing brackets or hardware, rods and poles, and installing the covering.

This classification excludes the installation of window and door awnings which is to be reported separately in the applicable classification, and the manufacture of coverings which is to be reported in the applicable classification.

Special note: Care should be taken when considering the assignment of a store classification to an establishment engaged in the installation of coverings to verify that a store exists. It is common for establishments subject to this classification to have show rooms to help customers visualize covering products available for sale. These establishments have little or no product available for immediate sale, as most items are special order from the manufacturer. A bona fide window/door covering store will have a large assortment of coverings, as well as related home interior products such as, but not limited to, pillows, small rugs, and accent pieces, readily available for sale to customers.

Applies to contractors engaged in the set up or removal of advertising or merchandise displays within buildings for retail or wholesale store customers. Operations contemplated by this classification will vary from seasonal panoramas with extensive carpentry, painting, and art work to dressing mannequins to be displayed in store windows.

This classification also applies to establishments engaged in providing merchandising services, not covered by another classification, (N.O.C.), without the responsibility of delivering products to the customer's place of business. Merchandising services contemplated by this classification include, but are not limited to, taking inventory of goods on hand, restocking, reordering, removing outdated or damaged merchandise from shelves, and/or assembling temporary displays.

This classification also applies to establishments providing staging services. They prepare a vacant or occupied home, showroom, or other types of property for viewing to make it appealing to prospective buyers. Usually under the direction of an interior decorator, employees will rearrange existing furniture or add accessories, eliminate clutter and depersonalize a home to make it more spacious and inviting. Staging may also be done on the exterior to provide better curb appeal, but this would generally be minimal by these firms.

This classification excludes employees of store operations engaged in setting up displays or providing staging services who are to be reported in the applicable store classification as this is a common store activity; assembly of work stations or office furniture which is to be reported in classification 2002, and merchandising establishments or employees who deliver products to their customer's place of business, and may also perform related merchandising functions, who are to be reported separately in classification 1101.

Applies to contractors and employees of equipment manufacturers engaged in the installation service and/or repair of meat cutting, slicing, or grinding equipment within stores, restaurants, or processing plants. Repair may be performed at the customer's location or in a shop operated by an employer subject to this classification. This classification includes repair shops, field technicians, installers, and warehouse or parts department employees.

Special note: Establishments subject to this classification generally do not have store operations. Equipment is generally ordered from the manufacturer or distributor and shipped to the customer's location where it will be installed. In the event that an establishment subject to this classification has a store operation it is included within classification 0607.

Applies to contractors engaged in the installation of protective bumpers on structures such as, but not limited to, store loading docks for freight or cargo. Operations contemplated by this classification are limited to measuring the dock to be fitted with a rubber bumper, finish cutting or otherwise fabricating the rubber pieces to fit the required application, and fastening the dock bumper with the use of hand tools. Dock bumpers are made of rubber from recycled tires or similar pliable materials.

This classification excludes the manufacture of loading dock bumpers which is to be reported separately in the applicable manufacturing classification.

Applies to establishments engaged in the installation of cellular phone systems and/or audio components in vehicles. Audio components include, but are not limited to, radios and stereo systems, speakers and amplifiers, alarm systems, television units, antennas, two-way radio systems. This classification applies to installation employees of stores that sell products as well as to auto service centers that specialize in the installation of products covered by this classification.

This classification excludes retail and wholesale store operations which are to be reported separately in the applicable store classification.

Applies to contractors engaged in the installation, service, and/or repair of electrical alarm systems such as, but not limited to, burglar, smoke, security, and fire, within buildings. Operations contemplated by this classification include, but are not limited to, installing low voltage wiring for security units, connecting control panels, installing motion or magnetic sensors on doors, windows, and hallways, installing security cameras and recording equipment, and installing smoke and fire alarm units on walls or ceilings. This classification includes both field and shop operations.

Applies to contractors engaged in the installation, service, and/or repair of all types of building or plant audio communication systems such as, but not limited to, intercoms, sound and paging systems in stores and shopping malls, and call box units in factories and refineries. Operations contemplated by this classification include, but are not limited to, installation of low voltage wiring, installation of audio and speaker units and connecting control units. This classification includes both field and shop operations.

Applies to contractors engaged in the installation, service, and/or repair of all types of telephone and/or telephonic equipment within residences, office buildings, stores and shopping malls, factories, refineries or other types of buildings. Operations contemplated by this classification include, but are not limited to, installation of low voltage wiring, installation of telephone units, and connecting control units. This classification includes both field and shop operations, as well as contractors engaged only in prewiring buildings for telephone and computer systems, but who do not install equipment.

Contractors engaged in the construction of new dams only, and includes all operations in the dam site area. A dam is a barrier built across a waterway to control the flow or level of water.

• Boring or tunneling;

• Caisson work;

• Earth and rock excavation;

• Erection of cofferdams;

• Erection of scaffolds;

• False work (temporary forms and support structures);

• Operation of concrete distribution apparatuses;

• Pile driving or shaft sinking;

• Placement of gates, turbines, control towers, and electrical wiring apparatus;

• Placement of reinforcing steel and rebar;

• Pouring and finishing concrete; and

• Setting and stripping of forms.

This classification also includes the incidental construction of fish ladders as part of the new dam construction project.

• All other construction, service, or repair work done as part of an existing dam is classified in the classification applicable to the phase of construction work being performed.

• For example, the inspection of the foundation of an existing dam by divers is classified in 0202; the patching of cracks in the dam is classified in 0518.

Applies to employees of cities or towns who:

• Perform manual labor;

• Supervise a work crew performing manual labor such as custodial or maintenance; and

• Operate machinery or equipment, including buses. This classification includes:

• Administrative personnel with field exposure, such as engineers, safety inspectors, and biologists. For purposes of this classification, field exposure is defined as any exposure other than the normal travel to a work assignment, such as an auditor or social worker would encounter.

This classification excludes:

• Municipal power districts which are to be reported separately in classification 1301;

• Privately owned and operated bus or transit systems which are to be reported separately in classification 1407;

• Public utility water districts, co-ops, or privately operated water distribution systems, which are to be reported separately in classification 1507;

• Law enforcement officers who are to be reported separately in classifications 6905 and 6906, as appropriate;

• Firefighters who are to be reported separately in classification 6904;

• Volunteers who are to be reported separately in classification 6901; and

• Clerical office and administrative employees who are to be reported separately in classification 5305.

Applies to establishments engaged in the building and/or repair of ships not covered by another classification (N.O.C.) and to the dismantling of hulls. Ships contemplated by this classification are recreational vessels under sixty-five feet and some commercial vessels such as, but not limited to, military vessels, tugs, scows, and barges. This classification may also include vessels over sixty-five feet that do not meet the situs and status provisions of the United States Longshore and Harbor Workers Compensation Act. This classification includes shop operations.

This classification excludes wood boat building and repair which is to be reported separately in classification 2903; sheet aluminum boat building which is to be reported separately in classification 3404; fiberglass boat building which is to be reported separately in classification 3511; plate aluminum boat building which is to be reported separately in classification 5209; and boat dealers, marinas, and boat house operations including repair centers which are to be reported separately in classification 3414.

Special note: This classification is seldom assigned as most work would be covered by LHWCA. Commercial vessels included in this classification are required to have a Small Vessel Exception Certificate issued by the U.S. Department of Labor.

Applies to establishments engaged in the operation and maintenance of a sawmill. Sawmills receive raw logs which they usually store temporarily in their yard before cutting them into rough and finished lumber. This classification includes operations such as, but not limited to, loading raw logs onto the conveyor or log slip; sawing logs with a variety of head, cut-off, circular or band saws; grading and sorting lumber; drying green (wet) lumber; and the stacking and storing of lumber. The raw logs are cut into rough lumber, such as cants and blocks, or into finished lumber, such as posts, planks or boards.

This classification excludes all operations conducted in the woods, such as logging or use of a portable sawmill, which is to be reported separately in classification 5001, and establishments engaged only in the manufacturing of wood, veneer, veneer products, or lumber remanufacturing which is to be reported separately in the classification applicable to the manufacturing being performed.

Applies to establishments operating an automated shake and shingle mill which manufacture shakes, shingles and/or ridge caps using automated processes. For purposes of this classification, automated processes refers to shake and shingle mills equipped with automatic feeders on all saws, adjustable packing and cutting stations, and fully automatic systems for conveying material to work stations. All equipment must be equipped with automatic shut off switches. Within a shingle mill the operation of a trim saw must be performed by an individual as a separate function from that of the shingle saw operator (shingle sawyer is not to perform both functions). Shake splitters must be equipped with a gauge control mechanism which permits the operator to automatically set the thickness of the cut. Conveyor systems must have dual controls to allow the deck man and sawyer the ability to control incoming material to the work station.

Block mills must be equipped with an automated pallet dump to eliminate the handling of material to the sawyer work station or an adjustable scissor lift adjacent to the shingle saw or shake splitter. Blocked wood purchased by mills must be contained in pallets prior to entering the mill yard or premises. Log mills must be equipped with a fully mechanized log slip (used to move logs into the deck area), log levelers, stabilizers, and lifters must be present in the deck area, automatic deck cut-off saw, live deck for moving material from the deck to the splitting area and overhead mounted splitters. Trim saws, also referred to as clipper saws, must be equipped with a laser guide or quartz light. This lighting reveals to the operator where its saw blade is in relationship to the material being processed.

For purposes of this classification, the following terms or words shall be given the meanings below:

Automatic deck or cut-off saw: A large saw, usually circular, used to trim logs to a specified length (rounds) before they enter a manufacturing plant.

Clipper saw: A machine used to make shingle edges parallel.

Shingle: Roofing or siding material having sawn faces and backs, are of a standard thickness at the butt end and tapered finish at the other end.

Shake: Roofing or siding material having at least one surface with a natural grain textured split surface.

Live deck: A chain driven platform located in the same proximity as the deck saw and is used to convey cut rounds from the cutting area to the splitting area.

Log stabilizer: A levered device adjacent to the deck saw used to hold the log steady while it is being cut.

Log slip: A chain driven conveyor used to move logs into the deck area.

Laser or quartz guide light: An overhead mounted light above a saw that illuminates that portion of a work surface where the saw blade will pass or make a cut.

Log leveler: A levered device adjacent to the deck saw used to level a log automatically.

Overhead splitter: A ceiling mounted hydraulic, air, or electrically operated apparatus with wedge shaped end that is used to split log rounds into block wood when activated by the splitterman.

Shingle saw: A machine used to make shingles.

Shake splitter: A machine used to split blocks into shake blanks.

Shake saw: A machine used to saw shake blanks into a finished wedged shaped product.

This classification excludes all operations conducted in the woods, such as logging or the cutting and splitting of shake or shingle bolts, which are to be reported separately in classification 5001.

Special notes: Shake and shingle mills not meeting all the conditions as set forth above shall be reported separately in classification 1005 "shake and/or shingle mills."

Businesses engaged in treating wood poles with creosote or other chemicals to inhibit deterioration, kiln drying of wood as a service for customers or for their own resale, producing wood poles to customer's specifications or for their own resale, producing wood masts and spars, and log home manufacturing/assembly in a yard operation.

• Utility poles;

• Supports for bridges/trestles;

• Piles to be driven into ground for support for a pier or other structure;

• Supports for sails and rigging on sailing vessels;

• Logs for log homes.

• Receiving in lumber or logs;

• Peeling of logs (mechanized or manual);

• Machining or turning of lumber, including cutting material into ties or cross arms;

• Drying/seasoning in kiln;

• Application of preservative, retardant, or insecticide treatment (heated, pressurized vacuum process in autoclave, or by surface application, spraying, brushing, and dipping, or soaking in tanks);

• Notching logs to assemble them together;

• Delivery.

• Log handling and trimming/cutting machinery;

• Kilns;

• Autoclaves;

• Storage tanks;

• Wood finishing equipment;

• Hand tools (planers, grinders, skids, drawn knives, slicks, chisels);

• Trolley cars;

• Chain saws;

• Loaders/cranes;

• Fork lifts.

• Dry kiln operations that are part of a wood, veneer, or lumber product manufacturing or remanufacturing operation are classified in the classification applicable for the operation being performed.

• Worker hours engaged in all operations conducted in the woods, such as the felling of timber, are reported separately in the applicable logging classification.

• Worker hours conducted away from the shop or yard, except delivery, is reported separately in the classification applicable for the work being performed.

• Log home manufacturing performed in a sawmill environment using dimensional lumber is classified in 2903-12.

• Worker hours engaged in the erection of log home shells at the customer's site are reported separately in classification 0510-00.

• All other phases of construction are classified in the applicable construction classification.

Businesses that operate log storage or sorting yards. The logs may be owned by the yard or stored for others.

• Grading logs by type or size;

• Loading/unloading log trucks;

• Recordkeeping;

• Routine maintenance of grounds and equipment;

• Security;

• Stacking logs.

• Worker hours engaged in trucking outside of the yard must be reported separately in 1102;

• Log storage or sorting yards operated by a logging company at a side or a remote location, are considered an inclusion and are classified in 5001 or 5005;

• Log storage yards operated in conjunction with a pole yard, log drying, or wood products manufacturing company are classified in the classification applicable to the business.

Businesses engaged in the operation and maintenance of a shake and/or shingle mill.

• Shakes - Roofing or siding material having at least one surface with a natural grain textured split surface;

• Shingles - Roofing or siding material having sawn faces and backs and of a standard thickness at the butt end and tapered finish at the other end; and

• Ridge caps - Produced from two pieces nailed together to form a "v" shape placed on the center line of a roof.

• Receiving raw logs which are cut and split into shakes, shingles, and ridge caps;

• Temporarily storing raw logs in the yard;

• Loading raw logs onto a conveyor or log slip;

• Cutting the log into rounds;

• Splitting the rounds into blocks;

• Feeding the blocks through a shake or shingle saw;

• Grading, sorting, bundling, and stacking finished shakes, shingles and/or ridge caps.

• Conveyors;

• Cut-off saws;

• Forklifts;

• Head saws;

• Log loaders;

• Log slips;

• Overhead splitters;

• Pallet presses;

• Shake saws;

• Shingle saws;

• Taper saws.

• Businesses engaged exclusively in the manufacturing of ridge caps or shims are classified in 2903;

• All operations conducted in the woods, such as logging or the cutting and splitting of shake or shingle bolts are classified in the applicable logging classification; and

• Automated shake and shingle mills are classified in 1002, provided the entire process to produce shakes and shingles is automated at the mill site, and meets the requirement defined in WAC 296-17A-1002.

Businesses engaged in providing professional land surveying services not covered by another classification (N.O.C).

• Measuring the size and physical characteristics of earth surfaces to determine precise location and measurements of points, elevations, lines, areas, contours, and boundaries;

• Performing marine, mine, forestry, geological and photogrammetric surveys which utilize sophisticated instruments and techniques, including aerial photography;

• Field data collected by surveyors may be used to produce maps, architectural and civil engineering plans and drawings. Maps and drawings may be produced by drafters who plot out the field data by hand or by using computer-aided drafting programs.

• Draftspersons whose duties are limited to office work, if all conditions of the general reporting rules governing standard exception employees have been met, may be reported separately in classification 4904;

• Surveyors employed by construction companies or other types of businesses are reported in the applicable classification for those businesses;

• Environmental and ecological surveyor services are classified in 1007.

Applies to contractors engaged in geophysical exploration, with no core drilling, and without seismic detection, who are not covered by another classification (N.O.C.). The more common methods of geophysical exploration are gravitational, electric and magnetic. In the gravitational method, delicate pendulums and torsion balances capable of detecting differences in the gravitational pull of the earth at various places enable the geologist to tell where oil is likely to be found. There are two electrical methods, resistivity and inductive. In the resistivity method, measurements are taken on an ohmmeter, which indicate the resistivity of the subsurface. The inductive method is somewhat comparable, but instead of determining the resistivity of the subsurface formations, the conductivity is measured enabling the geologist to determine the character of the subsurface being studied. The magnetic method is accomplished by means of a highly developed form of magnetic dipping needle with a telescope magnifier. The magnetic attraction exerted by magnetic rocks and formations causes the needle to deflect from its horizontal plane, thereby enabling a geologist to develop contour maps with lines of equal magnetic attraction. This classification includes prospectors who may specialize in particular instrumentation such as electrical, gravity, magnetic or seismic. The prospector studies structure of subsurface rock formations to locate petroleum deposits; conducts research using geophysical instruments such as seismograph, gravimeter, torsion balance, and magnetometer, pendulum devices, and electrical resistivity apparatus to measure characteristics of the earth; computes variations in physical forces existing at different locations and interprets data to reveal subsurface structures likely to contain petroleum deposits; and determines desirable locations for drilling operations. This classification includes prospecting for mineral ores and the testing of soil for percolation when performed by employees of an employer subject to this classification.

This classification excludes core drilling and seismic geophysical exploration which are to be reported separately in classification 0103, and geophysical crews employed by oil companies who are to be reported in the classification applicable to the business.

Special note: When assigning classifications 1007-08, 4901-16 - Geologists, and 0103-10 - Seismic geophysical exploration, care must be taken to look beyond the word "geologist" to determine the actual nature of the activities being performed.

Applies to establishments engaged in the testing or inspecting of pipelines, utility lines or conduits for others, provided the testing or inspecting is not performed in conjunction with the construction of the pipeline. This classification includes testing or inspecting involving radiographic, video, infrared thermography or X-ray analysis processes such as the X-raying of containers, inspecting of utility lines, and the drawing of oil samples on-site when performed by employees of an employer subject to this classification. Classification 1007-09 is assigned primarily to field activities.

This classification excludes testing or inspecting done in conjunction with construction which is to be reported separately in the appropriate construction classification.

Applies to establishments operating as inspection and grading bureaus, not covered by another classification (N.O.C.), including, but not limited to, those involved in inspecting and grading commodities such as logs, lumber, shingles, shakes, poles, and railroad ties. The commodity is examined and stamped with a grademark which indicates the grade, species, producer's name or number and other pertinent data. A certificate of inspection may be issued in lieu of a grademark. The purpose of the inspection is to grade, tally, and stamp only those products which meet certain required specifications and to cull those products which do not meet the established standards. Log scaling and grading bureaus measure the logs, and by applying log rule formulas, determine the net yield, usually expressed in board feet. A scale ticket containing descriptive data is attached to the end of the log. This classification also applies to weigh scale attendants not covered by another classification (N.O.C.), when the service is available to the general public, otherwise the weigh scale attendants are to be included in the basic classification of the business. This classification includes establishments engaged exclusively in such services as auto emission control testing, air flow balancing and testing, the balancing and testing of heating, ventilating and air conditioning systems, hydrostatic testing of such objects as boilers, tanks, pipes and fittings using compressed air or water pressure to detect leaks, the strength testing of building material such as, but not limited to, asphalt, concrete and steel; and the testing or inspecting of steel weldments. This classification also includes weather stations which observe and record weather conditions for use in forecasting, and which read weather instruments, including thermometers, barometers, and hygrometers to ascertain elements such as temperature, barometric pressure, humidity, wind velocity, and precipitation. Weather data is transmitted and received also from other stations. A fully automated (computerized) weather station can be reported under classification 4904. This classification also covers rainmaking without the use of aircraft.

Foresters engaged in forest management.

Work in this classification includes, but is not limited to:

• Plan and direct forestation or reforestation projects;

• Map forest areas;

• Estimate standing timber, future growth, or manage timber sales;

• Plan cutting programs to assure continuous production of timber;

• Determine methods of cutting and removing timber with minimum of waste and environmental damage;

• Plan and design forest fire suppression and fire prevention programs;

• Plan and design construction of fire towers, trails, roads, and fire breaks;

• Design projects for control of floods, soil erosion, tree diseases, and insect pests;

• Perform tree auditing;

• Perform scientific, tree, forestry, and watershed studies for others; and

• Inspect precommercial thinning layouts or pruning operations.

• Tree auditing services while planting is in process (report in classification 5004); and

• Performing manual labor or direct supervision of manual laborers.

Timber cruisers engaged in cruising timber land to estimate the volume and quality of a timber stand through an on-site visual inspection.

Work in this classification includes, but is not limited to:

• Collecting data concerning forest conditions for appraisal, sales, administration, logging, land use, and forest management planning;

• Traversing forest area on foot in an established pattern and applying sampling technique;

• Recording in a test site the height and diameter of each tree and defects such as rot and bends, to estimate the useable wood in each tree;

• Preparing from data collected a summary report giving the timber types, sizes, condition and outstanding features of an area, such as existing roads, streams and communication facilities; and

• Marking trees with spray paint to denote trails and boundaries, or for cutting.

• Performing manual labor or direct supervision of manual laborers.

Applies to establishments engaged in providing environmental and ecological surveying services not covered by another classification (N.O.C.) for others. Environmental or ecological surveying firms typically serve as consultants to industrial or commercial enterprises, governmental agencies or private citizens. Environmental engineer is a term applied to engineering personnel who apply knowledge of chemical, civil, mechanical, or other engineering disciplines to preserve the quality of life by correcting and improving various areas of environmental concern, such as air, soil, or water pollution. Services include identifying and projecting potential environmental impact resulting from proposed projects, assessing the source, severity and extent of environmental damage resulting from human or natural causes, and recommending solutions to protect or regain the natural balance between organisms and their environment. Activities of environmental surveying/consulting establishments include, but are not limited to, locating archaeological sites for preservation, researching and collecting field data on birds and insects, preparing impact statement for landowners and developers, stream and fish monitoring, botanical surveys, wetland surveys, soil and groundwater testing for contamination, air monitoring including industrial hygiene services, monitoring and testing at hazardous waste sites, providing advice on pollution control at its source, and developing a plan for cleaning up already recognized problems such as waste disposal sites, radon or asbestos contamination. Other services provided may include helping clients develop a system for complying with various governmental regulations. This classification includes employees of the environmental surveying service who conduct field work as well as those who are assigned to act as project managers or project superintendents to oversee the work of remediation contractors.

This classification excludes all types of remediation work which is to be reported separately in the classification applicable to the type of remediation work being performed, and surveyors employed by construction companies or other types of businesses who are to be reported separately in the applicable classifications.

Special note: When assigning classifications 1007 or 4901, care must be taken to look beyond the words "consulting" or "engineering" to determine the actual nature of the activities being performed.

Note: Classification 1101 is only to be assigned as a nature of business or if a basic classification specifically excludes delivery.

• Businesses engaged in delivering or repossessing individual automobiles for others; and

• Drivers of sound trucks.

• Unlocking vehicles; and

• Driving.

Generally, a client will contact the service company and arrange for a car to be delivered to a specific destination or request that a car of which they (client) are the legal owner, be repossessed and delivered to a specific location. In either case, a driver, not a motorized transportation service, does the delivery. It is common on long distance deliveries for the service company to use more than one driver.

• Worker hours or businesses operating tractor/trailer combinations to transport vehicles must be reported separately in classification 1102; and

• Worker hours using a tow truck, must be reported separately in classification 1109.

• Employees of retail and wholesale stores engaged in inter-store delivery or customer merchandise delivery when excluded from the store classification;

• Employees of a company that contracts to perform those same services;

• Small package specialty delivery companies; and

• Delivery not covered by another classification (N.O.C.).

• Loading and unloading delivery vans or trucks;

• Driving from store to store;

• Driving from a store to a customer's location; and

• May drive designated routes or delivery areas.

• Businesses engaged in general trucking services such as hauling bulk merchandise or commodities which are to be reported separately in classification 1102.

• Businesses engaged in the delivery of small parcels for others;

• Contract mail delivery route drivers and contract hauling of mail between post offices; and

• Businesses subject to this classification may offer overnight express services, but usually do not deliver packages that exceed 150 pounds.

• Driving delivery vehicles; and

• Loading and unloading delivery vehicles.

• Worker hours or businesses delivering bulk freight such as that delivered by trucking companies must be reported separately in classification 1102.

• Businesses engaged in route sales of a wide variety of merchandise not covered by another classification (N.O.C.) including, but not limited to, hand tools, automotive supply, and household items; and

• Businesses or employees known as merchandisers who deliver products such as, but not limited to, greeting cards, over-the-counter medications, and grooming products to their customer's place of business then perform related merchandising functions.

• Delivering products;

• Showing samples;

• Soliciting further orders;

• Calling on new customers along their route;

• Taking inventory of goods on hand;

• Restocking;

• Reordering;

• Removing outdated or damaged merchandise from shelves or the premises; and

• Assembling temporary displays usually made of lightweight material such as cardboard or plastic and used for promotional or seasonal goods.

• Employees of businesses who provide merchandising services, but who do not deliver products to the customer's place of business, may be reported separately in classification 0607; and

• Businesses engaged in the set up or removal of advertising or merchandise displays that involve more than incidental assembly of seasonal or promotional exhibits must be reported separately in classification 0607.

Special note: The distinguishing factor between merchandising employees who are to be reported in classification 1101-17 and those who may be reported in classification 0607 is the delivery of products to the customer's place of business. Any employee who delivers merchandise to the customer's place of business is to be reported in classification 1101.

• Businesses engaged in providing certain delivery services, usually using vans, cars, or bicycles.

• Delivering accounting or financial records;

• Delivering bodily fluid samples to and from laboratories;

• Errands;

• Delivering food, beverages, and other commodities;

• Delivering newspapers, magazines, telephone books;

• Route food services of prepackaged foods; and

• Shopping.

• Cashiering;

• Driving;

• Loading and unloading;

• Preparing and packaging foods for route service;

• Removing old periodicals from shelves;

• Running errands for others;

• Selling prepackaged foods on a route;

• Shopping for others;

• Stocking shelves; and

• Honor snack services operated independently from, and not in connection with, coin-operated vending machine services.

• Food truck businesses, are classified in classification 3905;

• Preparing and prepackaging food to sell as part of a route food delivery service that is not a food truck business as described in classification 3905, may be reported in classification 3905 if detailed time records are kept. Otherwise, all hours for the route food delivery service must be reported in classification 1101;

• Shopping and errand services performed as part of chore services for clients is classified in classification 6511; and

• Stocking and restocking vending machines as part of a vending machine business is classified in classification 0606.

Businesses that hire drivers and riders engaged in interstate trucking. Interstate truck driving is operating a truck hauling goods either to or from an out-of-state destination.

This classification includes passengers providing labor including lumpers and other similar workers who ride in the truck. "Lumpers" means laborers who load or unload cargo.

• Deadhead trips, driving without a load or without a trailer attached;

• Escort or pilot car driving;

• Loading and unloading vehicles;

• Mechanical repair.

• Bulk freight, merchandise, or commodities;

• Gravel or aggregate;

• Logs;

• Mobile homes or factory-built housing units;

• Soils or compost;

• Vehicles.

• Forklifts;

• Hand trucks;

• Pallet jacks;

• Tractor and trailers.

• Delivery of factory-built housing units by factory-built housing dealers is classified in 3415.

• Delivery and set up of factory-built housing units by contractor is classified in 0517.

• Businesses that provide escort or pilot car services for others as described in subclassification 1404-11 are classified in 1404-11.

• Automobile delivery or repossessing, where a driver, not a motorized transportations service, does the delivery, is classified in 1101-04.

• Businesses that sell and also deliver soils or compost are classified in 1103.

• Hauling logs from a logging side to a mill or storage yard is classified in 5003.

Businesses that hire drivers and riders engaged in intrastate trucking. Intrastate truck driving is operating a vehicle hauling goods within the boundaries of Washington state. This includes when the origin or destination of the load is out-of-state but the driver does not continue out-of-state with the load.

This classification includes passengers providing labor including lumpers and other similar workers who ride in the truck. "Lumpers" means laborers who load or unload cargo.

• Deadhead trips, driving without a load or without a trailer attached;

• Escort or pilot car driving;

• Loading and unloading vehicles;

• Mechanical repair.

• Bulk freight, merchandise, or commodities;

• Gravel or aggregate;

• Logs;

• Mobile homes or factory-built housing units;

• Soils or compost;

• Vehicles.

• Forklifts;

• Hand trucks;

• Pallet jacks;

• Tractor and trailers.

• Delivery of factory-built housing units by factory-built housing dealers is classified in 3415.

• Delivery and set up of factory-built housing units by contractor is classified in 0517.

• Businesses that provide escort or pilot car services for others as described in subclassification 1404-11 are classified in 1404-11.

• Automobile delivery or repossessing, where a driver, not a motorized transportations service, does the delivery, is classified in 1101-04.

• Businesses that sell and also deliver soils or compost are classified in 1103.

• Hauling logs from a logging side to a mill or storage yard is classified in 5003.

Businesses that employ drivers and riders engaged in both interstate and intrastate trucking.

Interstate truck driving is operating a truck hauling goods either to or from an out-of-state destination.

Intrastate truck driving is operating a vehicle hauling goods within the boundaries of Washington state. This includes when the origin or destination of the load is out-of-state but the driver does not continue out-of-state with the load.

This classification includes passengers providing labor including lumpers and other similar workers who ride in the truck. "Lumpers" means laborers who load or unload cargo.

• Deadhead trips, driving without a load or without a trailer attached;

• Escort or pilot car driving;

• Loading and unloading vehicles;

• Mechanical repair.

• Bulk freight, merchandise, or commodities;

• Gravel or aggregate;

• Logs;

• Mobile homes or factory-built housing units;

• Soils or compost;

• Vehicles.

• Forklifts;

• Hand trucks;

• Pallet jacks;

• Tractor and trailers.

• Delivery of factory-built housing units by factory-built housing dealers is classified in 3415.

• Delivery and set up of factory-built housing units by contractor is classified in 0517.

• Businesses that provide escort or pilot car services for others as described in subclassification 1404-11 are classified in 1404-11.

• Automobile delivery or repossessing, where a driver, not a motorized transportations service, does the delivery, is classified in 1101-04.

• Businesses that sell and also deliver soils or compost are classified in 1103.

• Hauling logs from a logging side to a mill or storage yard is classified in 5003.

Businesses engaged in selling coal, pressed wood fiber logs (fire logs), wood stove pellets, wood chips, or sawdust.

• Delivery;

• Store operations;

• Yard operations.

• Worker hours engaged in manufacturing operations are reported separately in the classification applicable to the material and process used.

• Worker hours engaged in mining operations are reported separately in the applicable mining classification.

Businesses engaged in selling firewood, operating a firewood sales lot that the dealer makes deliveries from or where customers pick up firewood.

• Cutting firewood – Businesses subject to this classification may purchase precut firewood from other nonrelated businesses or may have a cutting crew. The only cutting operations allowed in classification 1103 are those conducted at the sales lot;

• Delivery;

• Yard operations.

• Worker hours engaged in firewood cutting operations conducted in timber or forest lands are reported separately in the applicable logging classification.

• Worker hours engaged in firewood sales lot operations conducted from a logging landing are reported separately in the applicable logging classification.

Businesses engaged in composting.

• Dewatered sludge;

• Yard waste.

• Composting;

• Delivery.

• Composting yard waste - Grinders may be used to reduce the size of the material for faster composting. The material may be placed in static curing piles or long rows called "windrows" that are turned periodically to aerate until it is adequately decomposed. When needed, the resulting material is screened.

• Composting dewatered sludge - Processed and dewatered sludge is mixed with other materials such as shredded yard waste, sawdust, or other wood waste. The mixture must have the right degree of moisture and air to maintain a temperature between 130 and 160 degrees Fahrenheit.

The end product is a "Class A" pathogen product, meaning it can be used in soil for raising vegetables.

• Worm farms are classified in 4804.

Businesses engaged in selling soils, humus, peat, or beauty bark.

• Receiving and subsequent loading out into customer vehicles of soils, peat, humus, bark, compost, and related organic matter;

• Mixing custom soils;

• Incidental sales of landscaping rock, sand, gravel, and crushed rock;

• Delivery.

• Contract delivery by nondealer employees is classified in 1102.

• Building materials dealers selling stone, brick, or concrete products are classified in 2009.

• Worker hours engaged in digging soils/humus/peat/gravel or grinding bark are reported separately in the applicable classification.

Businesses engaged in salvaging, dismantling and parting out motorized vehicles, motorcycles, and aircraft. Parts may be removed and inventoried or removed when there is a special request for them. Afterward, hulls are stripped and may be crushed.

• Hauling cars and trucks to the yard by tow truck, flatbed, or multicar carrier or the owner may bring the vehicle to the yard;

• Removal of salable parts with the use of hand tools and discarding frames and bodies for future sale to scrap dealers and metal manufacturers;

• Breaking up of stripped chassis and bodies with torches or shears to be sold as iron or steel scrap;

• Salvaged parts are reconditioned or repaired and sold over the counter;

• Reconditioning of the yard's own autos and trucks for resale;

• Selling new parts;

• Locate and obtain parts from another yard for a customer;

• Tow truck operations related to the hauling of vehicles purchased by the wrecking yard for sale by the yard are included within the scope of this classification.

• Tow truck services to the public are classified in 1109;

• Salvaging, collecting, sorting, and reducing scrap metal are classified in 0604.

Businesses engaged in septic tank pumping services.

• Driving;

• Locating the septic tank;

• Digging as necessary to uncover the septic tank;

• Connecting the pumping hose to the septic tank;

• Pumping out the sludge; and

• Disposing of the waste products.

• Worker hours engaged in installation or repair of septic tanks or systems are reported separately in classification 0108;

• Worker hours engaged in cleaning of sewage treatment tanks are reported separately in classification 0504.

• Businesses engaged in street sweeping and parking lot sweeping services for others.

• Businesses engaged in snow removal by plowing.

• Businesses engaged in delivery of portable toilets and related servicing and disposal of waste products which are recovered by establishments subject to this classification.

• Businesses engaged in operating trucks that spray water on roads and other surfaces for dust control.

• Trucks used for sweeping, equipped with rotating or nonrotating brushes or vacuum/suction devices.

• Adjusting or unclogging the truck brushes;

• Cleaning the holding tanks on the sweeping or pumping vehicles;

• Driving.

Businesses engaged in vacuum truck services.

• Cleaning duct work using vacuum trucks;

• Picking up waste oils, lubricants, antifreeze, bilge water, and similar waste products using vacuum trucks.

• Operating vacuum trucks;

• Testing materials using testing kits;

• Pumping acceptable material into tanker trucks;

• Consolidating similar products in storage tanks;

• Taking waste to appropriate treatment or disposal facilities;

• Picking up containers of used oil filters, bringing them into their plant, sorting them into crushed and uncrushed filters, and removing their gaskets. This activity is included within the scope of this classification if it is an incidental service.

• Related disposal of waste products recovered by businesses subject to this classification.

• Septic tank pumping is classified in 1105-00.

• Businesses engaged in the rental of items, not covered by another classification N.O.C.;

• Businesses selling and installing truck canopies and related accessories, but who do not sell other types of vehicles or trailers.

• Air compressors;

• Automotive tools;

• Baby equipment;

• Convalescent equipment;

• Exercise equipment;

• Floor care equipment;

• Hand tools;

• Lawn and garden equipment;

• Light construction tools or equipment (saws, drills, sanders);

• Party and banquet equipment;

• Pressure washers.

• Clerical office personnel;

• Sales personnel;

• Maintenance and repair of rented goods when performed by employees of the rental store.

• Rental of commercial or industrial equipment and/or machinery such as, but not limited to, bulldozers, tractors, and backhoes is classified in 6409;

• Rental of farm machinery equipment is classified in 6408;

• Rental of vehicles is classified in the applicable classification;

• Rental of sporting goods is classified in 6406;

• Rental of clothing or costumes is classified in 6305; and

• Rental of furniture is classified in 6306.

• Businesses providing glass tempering services for others.

• Businesses shaping and finishing solid glass.

• Attaching frames, handles, or similar finishings;

• Bending;

• Beveling;

• Buffing;

• Carving;

• Decorating;

• Drying;

• Etching;

• Frosting;

• Glass cutting;

• Glue chipping;

• Grinding;

• Grooving;

• Polishing;

• Sandblasting;

• Silvering;

• Smoothing;

• Tempering.

• Aluminum frames for storm windows and doors;

• Glass cleaners;

• Mirror backings or frames;

• Screen materials;

• Sealants.

• Glass in electrical appliances, electronically controlled cabinets, and display panels;

• Glass signs;

• Mirrors;

• Tempered glass;

• Video game tops.

• Caulking;

• Cleaning solvents;

• Delivery and service vehicles;

• Diamond or glass cutting saws;

• Diamond or glass grinding wheels and discs;

• Drills;

• Etching and other hand tools;

• Forklifts;

• Grinders;

• Knives;

• Metal and wood cutting tools and machinery;

• Metallic solutions (usually silver);

• Packing materials;

• Paints;

• Plate glass;

• Polishing laps;

• Putty;

• Sanders;

• Saws;

• Shellacs or varnishes;

• Suction cups;

• Tempering ovens.

The process of glass tempering consists of taking auto or sheet glass purchased from a glass manufacturer or distributor and placing it in a tempering oven. The oven heat realigns the molecular structure of the glass creating additional strength without changing the appearance of the glass.

Manufacturing of insulated glass by sealing together two or more sheets of glass with an air space between them is also included when performed by employees of an employer subject to this classification.

• Worker hours for installation of glass, mirrors, aluminum or wood window sashes or similar products away from the shop are reported separately in classification 0511.

• Manufacturing of glass, stained glass, leaded glassware, or melting or blowing glass are classified in 3503.

• Businesses who specialize in selling or installing auto glass are classified in 1108-04.

• Businesses engaged exclusively in flat glass sales are classified in 1108-03.

• Businesses with combined auto/flat glass sales with no tempering are classified in 1108-05.

• Worker hours engaged in mining, digging, or quarrying of raw materials are reported separately in the applicable classification.

• Manufacturing of optical goods or telescopes, or performing precision grinding of blank or rough lenses are classified in 6604.

Businesses receiving, storing, selling, and installing all types of fabricated glass and plexiglass.

• Mirrors;

• Plate glass;

• Plexiglass;

• Safety glass for automobiles;

• Window glass.

• Beveling;

• Buffing;

• Cutting of glass or plexiglass to customers' specified dimensions;

• Grinding;

• Installation of glass or plexiglass into frames within the shop or adjacent yard;

• Polishing;

• Selling or installing fabricated flat glass;

• Selling and installing plate, laminated, window, cathedral, stained, bullet proof, opalescent flat, picture, skylight, and tempered glass;

• Silvering of plate glass.

• Aluminum frames for storm windows and doors;

• Glass cleaners;

• Mirror backings or frames;

• Screen materials;

• Sealants.

• Caulking;

• Cleaning solvents;

• Delivery and service vehicles;

• Drills;

• Forklifts;

• Grinders;

• Knives;

• Metal and wood cutting tools and machinery;

• Packing materials;

• Putty;

• Sanders;

• Saws;

• Suction cups.

• Worker hours for installation of glass, mirrors, aluminum or wood window sashes or similar products away from the shop are reported separately in classification 0511.

• Manufacturing of glass is classified in 3503.

• Businesses who specialize in selling or installing auto glass are classified in 1108-04.

• Businesses performing glass tempering are classified in 1108-02.

Businesses selling and installing automobile glass in vehicles.

• Twenty-four-hour emergency service or pickup and delivery;

• Installation of auto glass, truck glass, or boat tops performed in or away from the shop;

• Repairing auto windshield cracks, scratches, bullseyes, and breaks;

• Selling and installing new or replacement auto glass;

• Selling and installing sun roofs;

• Solar tinting of auto glass with film.

• Caulking;

• Cleaning solvents;

• Delivery and service vehicles;

• Drills;

• Grinders;

• Knives;

• Metal and wood cutting tools;

• Putty;

• Sanders;

• Saws;

• Solar tinting film;

• Suction cups;

• Windshield sticks.

• Manufacturing of glass is classified in 3503.

• Auto dealers who do tinting or the application of tinted plastic film to auto glass are classified in 3406.

• Auto dealers who repair auto windshield cracks, bullseyes, and chips are classified in 3406.

• Businesses performing glass tempering are classified in 1108-02.

• Businesses engaged exclusively in flat glass sales are classified in 1108-03.

• Businesses with combined auto/flat glass sales with no tempering are classified in 1108-05.

Businesses receiving, storing, selling, and installing all types of fabricated glass and plexiglass and selling and installing automobile glass in vehicles.

• Beveling;

• Buffing;

• Cutting of glass to customers' specified dimensions;

• Cutting, selling, or installing fabricated flat glass;

• Grinding;

• Installation of auto glass, truck glass, or boat tops;

• Installation of glass into frames;

• Installation of sun roofs;

• Polishing;

• Repair of auto windshield cracks, scratches, bullseyes, and breaks;

• Sell and install plate, laminated, window, cathedral, stained, bullet proof, opalescent flat, picture, skylight, and tempered glass;

• Silvering of plate glass;

• Solar tinting of auto glass with film.

• Aluminum frames for storm windows and doors;

• Glass cleaners;

• Mirror backings or frames;

• Screen materials;

• Sealants.

• Caulking;

• Cleaning solvents;

• Delivery and service vehicles;

• Drills;

• Forklifts;

• Grinders;

• Knives;

• Metal and wood cutting tools and machinery;

• Packing materials;

• Putty;

• Sanders;

• Saws;

• Suction cups;

• Windshield sticks.

• Worker hours for installation of glass, mirrors, aluminum or wood window sashes or similar products away from the shop are reported separately in classification 0511.

• Manufacturing of glass is classified in 3503.

• Auto dealers who do tinting or the application of tinted plastic film to auto glass are classified in 3406.

• Auto dealers who repair auto windshield cracks, bullseyes, and chips are classified in 3406.

• Businesses performing glass tempering are classified in 1108-02.

• Businesses engaged exclusively in flat glass sales are classified in 1108-03.

Businesses providing towing services for hire to others which are not covered by another classification (N.O.C.).

For purposes of this classification "towing services for hire" means, but is not limited to:

• Towing disabled vehicles to a shop that is unrelated to the towing service for repair;

• Recovering repossessed vehicles for others by tow truck;

• Roadside assistance during snow, ice or flooding to recover or free stuck vehicles;

• Towing disabled vehicles to a secured yard for insurance or law enforcement agencies.

• Auto service centers and repair garages, auto body shops and wrecking yard operations are reported separately in the applicable service or repair classification provided that the conditions of the general reporting rules covering the division of worker hours have been met.

• Tow truck dispatchers who have no other duties may be reported separately in classification 4904 provided that the conditions of the standard exception general reporting rules have been met.

Special note: Towing is common to many classifications. Employers offering towing services should be contacted to verify whether the towing service they provide is only in connection with their auto repair, auto body or wrecking yard (towing service not for hire), or provided as a general service unrelated to their repair garage (towing services for hire). Only towing services for hire are to be assigned to classification 1109. If a business provides both towing services for hire and not for hire, worker hours for drivers and their assistants may be divided between this classification and the applicable repair garage classification provided that the conditions of the general reporting rule covering the division of worker hours has been met. Otherwise, all driver and assistant hours are to be assigned to the highest rated classification applicable to the business.

Applies to establishments, operated by a city, town, or county, engaged in generating and distributing electricity to their residents. These may be hydroelectric, fossil fuel steam or turbo-generator plants. This classification includes the regular installation, maintenance and repair of power plant machinery and equipment, the extension and maintenance of lines (including poles, towers and underground lines), the installation and maintenance of circuit breakers and transformers on poles, pole-to-house hook-ups (service connections), meter installation and meter readers when done by employees of an employer having operations subject to this classification. Machinery and equipment may include, but not be limited to, boilers, turbines, generators, cables, transformers, switchgears, circuit breakers, control panels, substations, poles, lines, relays, computers, cranes, forklifts, vehicles and garages, warehouse equipment, meters and hand tools. Clerical office and administrative personnel are to be reported separately in classification 5305 for a city or town, or 5306 for a county.

This classification excludes contractors engaged in underground line construction maintenance or repair who are to be reported separately in classification 0107; contractors engaged in overhead line, pole and tower construction, maintenance or repair, who are to be reported separately in classification 0509; contractors engaged in wiring within buildings who are to be reported separately in classification 0601; contractors engaged in the installation of machinery or equipment who are to be reported separately in classification 0601 or 0603 as applicable; and the construction of any buildings which is to be reported separately in the applicable construction classification.

Applies to establishments, in the form of cooperatives, engaged in generating and distributing electricity to their customers. A cooperative is formed by, and owned jointly by, those who make use of the service being provided. The power may be generated by a hydroelectric, fossil fuel steam or turbo-generator plant. This classification is appropriate whether a cooperative owns a power plant or is distributing power purchased from another utility company. Work contemplated by this classification includes the regular installation, maintenance and repair of power plant machinery and equipment, the extension and maintenance of lines (including poles, towers and underground lines), the installation and maintenance of circuit breakers and transformers on poles, pole-to-house hook-ups (service connections), meter installation and meter readers when done by employees of an employer having operations subject to this classification. Machinery and equipment may include, but not be limited to, boilers, turbines, generators, cables, transformers, switchgears, circuit breakers, control panels, substations, poles, lines, relays, computers, cranes, forklifts, vehicles and garages, warehouse equipment, meters and hand tools. Clerical office and administrative personnel are to be reported separately as appropriate for the ownership of the cooperative; 5305 for cities and towns; 5306 for counties; or 4904 and 6303 for nonmunicipal.

This classification excludes contractors engaged in underground line construction maintenance or repair who are to be reported separately in classification 0107; contractors engaged in overhead line, pole and tower construction, maintenance or repair, who are to be reported separately in classification 0509; contractors engaged in wiring within buildings who are to be reported separately in classification 0601; contractors engaged in the installation of machinery or equipment who are to be reported separately in classification 0601 or 0603 as applicable; and the construction of any buildings which is to be reported separately in the applicable construction classification.

Applies to establishments, in the form of a public utility district (P.U.D.), engaged in generating and distributing electric power to a part of a county. This classification applies whether a P.U.D. owns a power plant or is distributing power purchased from another utility. Work contemplated by this classification includes the regular installation, maintenance and repair of power plant machinery and equipment, the extension and maintenance of lines (including poles, towers and underground lines), the installation and maintenance of circuit breakers and transformers on poles, pole-to-house hook-ups (service connections), meter installation and meter readers when done by employees of an employer having operations subject to this classification. Machinery and equipment may include, but not be limited to, boilers, turbines, generators, cables, transformers, switchgears, circuit breakers, control panels, substations, poles, lines, relays, computers, cranes, forklifts, vehicles and garages, warehouse equipment, meters and hand tools. Clerical office and administrative personnel are to be reported separately in 5306.

This classification excludes contractors engaged in underground line construction maintenance or repair who are to be reported separately in classification 0107; contractors engaged in overhead line, pole and tower construction, maintenance or repair, who are to be reported separately in classification 0509; contractors engaged in wiring within buildings who are to be reported separately in classification 0601; contractors engaged in the installation of machinery or equipment who are to be reported separately in classification 0601 or 0603 as applicable; and the construction of any buildings which is to be reported separately in the applicable construction classification.

Applies to establishments engaged in the operation of a steam heat power plant. These businesses use coal, oil, natural gases or electric power to produce steam which is distributed through a network of under or overground pipes to customers (the plant must be very near the purchaser). The initial process of producing the steam is the same as the process used in a steam powered electric generating plant, but the steam is channeled out to the purchaser instead of being used to turn turbines. The purchasers use the steam for heating buildings, operating saunas, as a heat source for cooking or processing in food processing plants, breweries or restaurants, producing the heat needed for wood drying kilns, or to convert back to hot water. Work contemplated by this classification includes, but is not limited to, the regular installation, maintenance or repair of plant machinery and equipment, the extension and maintenance of over or underground pipes, main-to-user hook-ups, meter installation and meter readers. Clerical office and administrative personnel are to be reported separately as appropriate for the ownership of the steam plant; 5305 for cities and towns; 5306 for counties; or 4904 and 6303 for nonmunicipal.

This classification excludes contractors engaged in over or underground pipeline construction, maintenance or repair, main-to-house line extensions and hook-ups, who are to be reported separately in classification 0107; contractors engaged in the installation or contract maintenance of machinery or equipment who are to be reported separately in classification 0603; and the construction of any buildings which is to be reported separately in the applicable construction classification.

All other employees of businesses providing telecommunications services that enable subscribers or customers to converse or transmit coded data, not covered by another classification (N.O.C.).

Classification 1303 is usually assigned with classification 1304 for the business's administrative, office, and sales personnel. Employers must keep records that permit the department to confirm hours worked in each classification. When employers do not or cannot keep these records, they must report all hours in question in the classification with the higher rate.

• Clearing right of ways;

• Extension and maintenance of lines (including poles, towers, and underground lines);

• Installation, maintenance, and repair of machinery and equipment;

• Installing telephones and wiring in buildings;

• Making service connections when done by employees of an employer having operations subject to this classification.

• Antennae;

• Central control and switching center equipment;

• Computers;

• Cranes;

• Forklifts;

• Hand tools;

• Relays;

• Vehicles;

• Warehouse equipment.

• Worker hours for clerical office, exchange operators, and administrative personnel of businesses providing telecommunications services are reported separately in classification 1304;

• Contractors engaged in underground line construction, maintenance, or repair are classified in 0107;

• Contractors engaged in overhead line, pole, and tower construction, maintenance, or repair are classified in 0509;

• Contractors engaged in wiring within buildings and making pole-to-house hook-ups are classified in 0608;

• Contractors engaged in the installation or contract maintenance of machinery or equipment are classified in 0603;

• Businesses primarily engaged in selling telephone equipment retail are classified in 6411.

Administrative and clerical office personnel of businesses engaged in providing telecommunication services which enable two or more parties to converse or transmit coded data.

• Clerical office;

• Customer service;

• Data processing;

• Exchange operators;

• Marketing;

• Retail telephone store (when operated by the telephone company) sales personnel;

• Sales personnel.

• All other telephone company employees are classified in 1303.

Administrative and clerical office personnel of businesses engaged in providing telecommunication services which enable printed messages (telegrams) or moneygrams to be transmitted from one agent to another for receipt by a designated party.

• Cashiers;

• Clerical office;

• Customer service;

• Data processing;

• Marketing;

• Operators of telegraph, teletype or other transmitting and receiving equipment;

• Sales personnel.

• All other telegraph company employees are classified in 1303.

Classification 1305 is restricted to firms providing point-to-point subscription television or other cable communications services. These companies normally operate and maintain control centers where they receive signals through antennas or satellite dishes from broadcasting stations. The signals are then transmitted to subscribers. This classification applies to work performed away from the employer's premises, or on the roof or exterior of any building on the employer's premises. Work specific to this classification includes installing, testing, and repairing cable lines, antennas, satellite dishes, poles, towers, and using any field equipment for extending and maintaining the cable lines or doing point-to-point hook-up for customers.

This classification excludes:

• All employees working inside the employer's control centers, offices, or facilities who are reported in classification 4502;

• Workers employed by television and radio stations or audio and video production companies who are reported in classifications 4501 and 4502;

• Construction, maintenance, or repair by contractors, who are reported according to the following type work:

– Underground lines - Classification 0107;

– Overhead lines - Classification 0509;

– Towers - Classification 0508;

– Electrical wires, cable, or antenna hook-ups within buildings - Classification 0601; and

– Satellite dish and antenna hook-ups on building exteriors - Classification 0607.

Employers normally are assigned classification 4502 in addition to classification 1305; however, they must maintain records that permit the department to confirm hours worked in either classification. When employers do not or cannot maintain these records, they must report all hours in question in the classification with the higher rate.

For administrative purposes, classification 1305 is divided into the following subclassification(s):

This classification is for reporting drivers on a flat rate of 480 hours per driver each quarter.

Businesses providing passenger transportation to others, including:

• Businesses that employ taxi or for-hire drivers as defined under either chapter 81.72 or 46.72 RCW; and WAC 296-17-35205, which describes special reporting.

• Taxi or for-hire drivers as defined under either chapter 81.72 or 46.72 RCW, and who own their own vehicles or who lease vehicles from others; and elect optional coverage as provided by RCW 51.32.030 and as defined in WAC 296-17-31007.

• Operation of the vehicle;

• Loading/unloading passengers' luggage;

• Assisting passengers in and out of the vehicle; and

• Incidental "cabulance" services which may be offered in conjunction with the taxi service.

• Businesses that operate ambulance services are classified in 1405;

• Businesses that operate cabulance and paratransit services exclusively are classified in 1404;

• Dispatchers with no other job duties may be classified separately in 4904; and

• Work performing maintenance/repair of the vehicle is classified separately in 3411.

Special note: If all conditions are met for the general reporting rules about standard exception employees, businesses that furnish only a dispatch service for taxicab drivers who own their own vehicles, or who lease vehicles from others, may be classified separately in 4904. Employees of a taxicab dispatch service who perform maintenance/repair of vehicles are classified separately in 3411.

This classification is for reporting vehicles on a flat rate of 960 hours per vehicle each quarter.

Businesses providing passenger transportation to others, including:

• Businesses that employ taxi or for-hire drivers as defined under either chapter 81.72 or 46.72 RCW; and WAC 296-17-35205, which describes special reporting.

• Taxi or for-hire drivers as defined under either chapter 81.72 or 46.72 RCW, and who own their own vehicles or who lease vehicles from others; and elect optional coverage as provided by RCW 51.32.030 and as defined in WAC 296-17-31007.

• Operation of the vehicle;

• Loading/unloading passengers' luggage;

• Assisting passengers in and out of the vehicle; and

• Incidental "cabulance" services which may be offered in conjunction with the taxi service.

• Businesses that operate ambulance services are classified in 1405;

• Businesses that operate cabulance and paratransit services exclusively are classified in 1404;

• Dispatchers with no other job duties may be classified separately in 4904; and

• Work performing maintenance/repair of the vehicle is classified separately in 3411.

Special note: If all conditions are met for the general reporting rules about standard exception employees, businesses that furnish only a dispatch service for taxicab drivers who own their own vehicles, or who lease vehicles from others, may be classified separately in 4904. Employees of a taxicab dispatch service who perform maintenance/repair of vehicles are classified separately in 3411.

This classification is for reporting employees on an actual hours worked basis.

Businesses providing passenger transportation to others, including:

• Transportation network companies as defined in Title 49 RCW. Special reporting and coverage requirements in WAC 296-17-35205;

• Businesses that employ taxi or for-hire drivers as defined under either chapter 81.72 or 46.72 RCW; and WAC 296-17-35205, which describes special reporting.

• Taxi or for-hire drivers as defined under either chapter 81.72 or 46.72 RCW, and who own their own vehicles or who lease vehicles from others; and elect optional coverage as provided by RCW 51.32.030 and as defined in WAC 296-17-31007.

• Operation of the vehicle;

• Loading/unloading passengers' luggage;

• Assisting passengers in and out of the vehicle; and

• Incidental "cabulance" services which may be offered in conjunction with the taxi service.

• Businesses that operate ambulance services are classified in 1405;

• Businesses that operate cabulance and paratransit services exclusively are classified in 1404;

• Dispatchers with no other job duties may be classified separately in 4904; and

• Work performing maintenance/repair of the vehicle is classified separately in 3411.

Special note: If all conditions are met for the general reporting rules about standard exception employees, businesses that furnish only a dispatch service for taxicab drivers who own their own vehicles, or who lease vehicles from others, may be classified separately in 4904. Employees of a taxicab dispatch service who perform maintenance/repair of vehicles are classified separately in 3411.

Applies to businesses engaged in furnishing passenger transportation to others using pedicab or horse-drawn carriage.

• Operation of the vehicle;

• Assisting passengers in and out of the vehicle; and

• The care and feeding of animals while vehicle is available for transporting passengers.

Businesses in this classification report the actual hours their employees work and must maintain verifiable records.

Applies to employees not covered under federal jurisdiction, or another classification (N.O.C.), who provide services for seaworthy vessels such as ferries, tugs, or steamboats at the docking site or on adjacent land. Vessels may operate seasonal or year-round. Employments include, but are not limited to, dock workers, maintenance workers, traffic control personnel, and night security personnel.

Special note: Care should be exercised prior to assignment of this classification as the workers could be subject to federal laws covered by the Jones Act or by the U.S. Longshore and Harbor Workers Act. A detailed description of these acts can be found in classifications 0104 or 0202.

Applies to establishments engaged in the operation of passenger excursion train rides for scenic or amusement purposes on an intrastate basis only. Excursion train rides are typically operated from a mountain, lake or similar site. The trains may operate on a seasonal basis in direct relation to the volume of tourists, weather conditions, or dates of local celebration. Employments in this classification include, but are not limited to, drivers/engineers, guides, lecturers, hostesses, and maintenance personnel. Ticket sellers may be reported separately in classification 4904 provided that they do not handle baggage and that the conditions of the standard exception general reporting rules have been met. On-board food service personnel may be reported separately in classification 3905 as long as their duties are limited to food service and they do not facilitate the train ride or train ride operation in any way.

Applies to establishments that provide escort or pilot car services for others. The duties include driving ahead of, or behind, various types of vehicles.

This classification excludes employees of an employer assigned to drive escort or pilot cars in connection with the delivery of equipment, buildings, goods, or similar items which the employer sells or contracts to deliver. Such employment is reported separately in the classification applicable to sales or delivery of such items. For example, an escort driver employed by a common carrier transporting a modular home to a customer's site is reported separately in classification 1102.

Applies exclusively to establishments that provide on-demand, nonemergency transportation services to passengers with special needs. Vehicles used are usually vans that are equipped for accessibility to accommodate passengers with mobility limitations including passengers in wheelchairs or gurneys. Work contemplated by this classification includes, but is not limited to, operation of the vehicle, assisting passengers in and out of the vehicle, and maintenance/repair of the vehicle when performed by employees of an employer subject to this classification.

This classification excludes:

• Cabulance services offered in conjunction with a taxi service; see classification 1401;

• Cabulance services offered in conjunction with an ambulance service which are reported separately in classification 1405;

• Paratransit services offered in conjunction with a municipal bus or transit system which are included in classification 0803 or 1501 as appropriate;

• Ambulance services which are reported separately in classification 1405;

• Limousine drivers; see classification 6301; and

• Dispatchers with no other duties who are reported separately in classification 4904.

Special note: Care should be exercised in determining what type of cabulance service is being provided. This classification is not to be assigned when provided as an incidental part of a taxi cab service subject to classification 1401. A cabulance service as defined in this rule will need a specialized van or bus to transport passengers as opposed to a passenger automobile that is not equipped to accommodate special mobility needs. The transportation service must be prearranged.

Applies to establishments engaged in prehospital emergency care and transportation of ill or injured persons to or from medical facilities. The services provided by any one ambulance company will vary to some degree, however, normal operations for ambulance companies include, but are not limited to, the following: Prehospital care, responding to calls where the injury or accident does not require medical treatment other than that provided by Emergency Medical Technicians (paramedics) who work for the ambulance company, standby at events, assisting in providing prehospital care and patient transport services of injured players or spectators at games, concerts, and fairs, public education/training, teaching CPR, first aid, and related courses to the public, and cabulance service (transporting patients who do not require prehospital care to and from medical facilities).

This classification excludes: Cabulance services offered in conjunction with a taxi service which are to be reported separately in classification 1401; companies engaged exclusively in cabulance and paratransit services which are to be reported separately in classification 1404; and similar emergency services provided by a municipality which are to be reported separately in classification 6904.

Special notes: Special care must be taken in classifying cabulance services which may also be included in classifications 1401 or 1404. In order to qualify for classification 1405, a company must be primarily in business as an ambulance company. For premium reporting purposes, ambulance companies are to report all employees on an hourly basis, provided the maximum will not exceed eight hours during any twenty-four hour period. If verifiable records disclosing actual time worked are unavailable, employees are to be reported at eight hours per day for each day they had duties. If records do not disclose hours or days worked by individual employees, an assessment of forty hours per week is to be made for each week in which an employee had duties, or one hundred and sixty hours per month. For air ambulance services, flight time is to be reported separately in classification 6803, and ground operations are to be reported separately in classification 1405.

Businesses providing transportation services including, but not limited to:

• Charter and tour bus;

• Contract school bus;

• Nonmunicipal, scheduled bus systems;

• Shuttle van.

• All bus terminal employment except for certain qualifying office personnel;

• Cleaning, maintenance, and ordinary repair of all facilities, equipment, and vehicles;

• Loading/unloading duties;

• Operation of the vehicle.

• Municipal transit and bus services provided by a county or taxing district are classified in 1501;

• Municipal transit and bus services provided by a city or town are classified in 0803;

• Taxicab companies and transportation network companies are classified in 1401;

• Cabulance and paratransit companies are classified in 1404;

• Drivers employed by a limousine company are classified in 6301.

Special note: Businesses subject to this classification are to report actual hours worked for each driver. However, the hours are to be capped at 520 hours per driver per quarter.

Applies to employees of counties and taxing districts, not covered by another classification (N.O.C.), who:

• Operate machinery or equipment, including transit bus drivers;

• Perform manual labor;

• Supervise a work crew performing manual labor such as custodial or maintenance.

This classification includes administrative personnel such as:

• Engineers, safety inspectors, and biologists who have field exposure;

• Internal inventory and supply clerks.

For purposes of this classification, field exposure is defined as any exposure other than the normal travel to or from a work assignment.

This classification excludes:

• Clerical office and administrative employees who are to be reported separately in classification 5306;

• Electric light and power public utility districts which are to be reported separately in classification 1301;

• Firefighters who are to be reported separately in classification 6904;

• Hospital districts which are to be reported separately in classification 6105;

• Irrigation system public utility districts which are to be reported separately in classification 1507;

• Law enforcement officers who are to be reported separately in classifications 6905 and 6906, as appropriate;

• Port districts which are to be reported separately in classification 4201;

• Privately owned and operated bus or transit systems which are to be reported separately in classification 1407;

• School districts, library districts or museum districts which are to be reported separately in classification 6103 or 6104;

• Water distribution or purification system public utility districts which are to be reported separately in classification 1507;

• Volunteers who are to be reported separately in classification 6901 or 6906, as appropriate.

Applies to employees of housing authorities, not covered by another classification, who:

• Perform manual labor;

• Supervise a work crew performing manual labor such as custodial or maintenance, and machinery or equipment operators.

This classification includes all functional operations of a housing authority such as:

• Building and grounds maintenance;

• Inspection, maintenance and repairs, including minor structural repairs;

• Janitorial service.

Also included in this classification are:

• Administrative personnel such as engineers and safety inspectors who have field exposure;

• Internal inventory and supply clerks;

• Meter readers;

• Security personnel, other than those with law enforcement powers.

For purposes of this classification, housing authorities are defined as nonprofit, public and political entities which serve the needs of a specific city, county or Indian tribe. The nature and objectives of some of the projects undertaken by housing authorities include providing decent, safe and sanitary living accommodations for low income persons, or providing group homes or halfway houses to serve people with disabilities or juveniles released from correctional facilities. A housing authority has the power to:

• Prepare, carry out, lease and operate housing facilities;

• Provide for the construction, reconstruction, improvement, alteration or repair of any housing project;

• Sell or rent dwellings forming part of the project to or for persons of low income;

• Acquire, lease, rent or sell or otherwise dispose of any commercial space located in buildings or structures containing a housing project;

• Arrange or contract for the furnishing of the units;

• Investigate into the means and methods of improving such conditions where there is a shortage of suitable, safe and sanitary dwelling accommodations for persons of low income.

This classification excludes:

• Clerical office and administrative employees who are to be reported separately in classification 5306;

• New construction or major alteration activities which are to be reported separately in the appropriate construction classifications;

• Security personnel with law enforcement powers who are to be reported separately in classification 6905;

• Volunteers who are to be reported separately in classifications 6901 or 6906, as appropriate.

Applies to employees of Native American tribal councils who perform manual labor, or who supervise a work crew performing manual labor such as custodial or maintenance, and machinery or equipment operators. This classification includes:

• Administrative personnel such as engineers, safety inspectors, and biologists who have field exposure;

• Internal inventory and supply clerks of the tribal council.

For purposes of this classification, field exposure is defined as any exposure other than the normal travel to and from a work assignment.

This classification excludes:

• Clerical office and administrative employees who are to be reported separately in classification 5306;

• Electric light and power public utility districts which are to be reported separately in classification 1301;

• Firefighters who are to be reported separately in classification 6904;

• Hospital districts which are to be reported separately in classification 6105;

• Irrigation system public utility districts which are to be reported separately in classification 1507;

• Law enforcement officers who are to be reported separately in classifications 6905 and 6906;

• New construction or reconstruction activities which are to be reported separately in the appropriate construction classification;

• School districts, library districts or museum districts which are to be reported separately in classification 6103 or 6104;

• Water distribution or purification system public utility districts which are to be reported separately in classification 1507.

Special notes: Housing authorities operating under the name of, and for the benefit of, a particular tribe are not exempt from mandatory coverage. These housing authorities are federally funded and are not owned or controlled by a tribe.

Only those tribal operations which are also provided by county governments are subject to classification 1501. Some activities are considered to be normal operations to be included in this classification. These include, but are not limited to:

• Building maintenance;

• Garbage and sewer works;

• Grounds keepers;

• Park maintenance;

• Road maintenance;

• Visiting nurses and home health care.

All other tribal council operations which are not normally performed by a county government shall be assigned the appropriate classification for the activities being performed.

Some operations are outside the scope of classification 1501 and are to be reported separately in the applicable classifications. These include, but are not limited to:

• Bingo parlors;

• Casinos;

• Fish/shellfish hatcheries;

• Food banks;

• Gift shops;

• Grocery stores;

• Head Start programs;

• Liquor stores;

• Logging;

• Meals on wheels;

• Motels/hotels;

• Restaurants;

• Tobacco stores;

• Tree planting/reforestation.

Applies to establishments not covered by another classification (N.O.C.), engaged in providing all support operations and services on a military base on a contract basis. Such services include, but are not limited to:

• Data processing;

• Photography;

• Mail delivery (on post and to other military facilities);

• Hotel/motel services;

• Mess halls;

• Recreational facilities;

• Grounds and building maintenance;

• Vehicle maintenance;

• Maintenance of such facilities as water works, sewer treatment plants and roads.

This classification excludes:

• New construction or construction repair projects which are to be reported separately in the applicable construction classification for the work being performed;

• Contracts for specific activities on a military base such as, but not limited to, building maintenance, club or mess hall operations, or vehicle maintenance, which are to be reported separately in the applicable classification for the work being performed;

• Firefighters who are to be reported separately in classification 6904;

• Law enforcement officers who are to be reported separately in classification 6905;

• Clerical office and administrative employees who are to be reported separately in classification 5306.

Special note: Classification 1501-09 is to be assigned to an establishment only when all support services on a military base are being provided by the contractor. Care should be taken when assigning classification 1501-09 to firms whose military support services include loading, unloading, repair or construction of vessels, or the repair of buildings or structures used for such activities as that firm may be subject to federal maritime law.

Applies to organizations performing two or more services to support the local community and people in need. This classification applies to employees who are not otherwise classified (N.O.C.) and who perform manual-type labor, or who supervise a work crew performing manual labor. Workers in this classification include, but are not limited to:

• Cooks;

• Food bank staff;

• Drivers;

• Janitorial or maintenance and repair work staff;

• Weatherization services staff.

See classifications 4904-20, 5308-20, and 6511-20 for other community action classifications.

Note: The services provided by the community action organizations include, but are not limited to:

• After school care;

• Alternative schools;

• Child care;

• Counseling and assistance;

• Decent, safe and sanitary living accommodations for low-income or needy people;

• Drug and alcohol recovery programs;

• Employment or independence training;

• Food and clothing banks;

• In home chore services;

• Meals;

• Medical services;

• Transitional or emergency housing;

• Weatherization.

Note: Businesses providing only one service described in this classification are to be assigned the classification applicable to the service provided. If all conditions of the general reporting rules have been met, standard exception classifications may apply.

Excluded from this risk classification are:

• New construction or major alteration activities. Normal maintenance and repair contemplated by this classification includes, but is not limited to, replacing parts on existing fixtures or equipment, repairing existing structures, normal cleaning or janitorial activities, maintaining existing landscaping, and shoveling snow from driveways or walkways. Construction, alteration, or improvements to the properties are not considered normal maintenance and are not contemplated by this classification. Major repair work is usually performed by contractors who are not employees of the community action organization. New construction or major alterations such as the construction of new additions or the construction of new structures are excluded from this classification and are to be reported separately in the appropriate construction classifications;

• Office employees who work exclusively in an administrative office environment who are to be reported in classification 4904-20;

• Professional or administrative employees who may also have duties outside of the office who are to be reported in classification 5308-20;

• Chore workers/home service workers who are to be reported in classification 6511-20;

• Individuals employed in welfare special works programs who are to be reported in 6505;

• Individuals employed in work activity centers who are to be reported in 7309;

• Volunteers who are to be reported in classification 6901 when medical aid coverage has been elected.

Excluded operations: Firms engaged as housing authorities are reported in classifications 1501-01 and 5306-26.

Applies to establishments engaged in providing water for agricultural irrigation through a network of ditches, canals and/or pipelines. Irrigation system operations may be owned by individuals, a private company, cooperatives or a municipality. Water for irrigation can come from a natural above or below ground source or a reservoir and is kept flowing by means of pumping plants. Irrigation water usage is monitored at the "turn-out" which must be manually opened by an employee of the irrigation company and is located between the ditch/pipeline and the user's field. Work contemplated by this classification includes, but is not limited to, digging and maintaining ditches or canals, installing underground pipe, installation or maintenance of control gates and pumps, cleaning of ditches, spraying to control insects, and regular maintenance of vehicles and equipment when done by employees of an employer having operations subject to this classification. Machinery and equipment includes, but is not limited to, water pumps, ditch digging/pipe laying equipment, control gates, pumps, vehicles, spraying equipment and hand tools. This classification includes the operation of drainage systems by a private company or a municipal special purpose district.

This classification excludes: Contractors engaged in the digging of ditches or canals who are to be reported separately in classification 0108 or 0201 as applicable; contractors engaged in underground pipe laying which is to be reported separately in classification 0107; contractors engaged in the installation of agricultural sprinkler systems which is to be reported separately in classification 0301; contractors engaged in the installation or repair of irrigation/drainage pumps which is to be reported separately in classification 0306; the routine irrigation of individual agricultural acreage with the owner's own system which is to be reported separately in the classification applicable to the establishment; the construction of any new buildings which is to be reported separately in the construction classification applicable to the work being performed; and clerical office and administrative personnel who are to be reported separately as appropriate, classification 5305 for cities and towns, classification 5306 for counties, or classifications 4904 and 6303 for nonmunicipal ownership.

Special note: Many water supply operations in Washington may have "irrigation district" as part of their name because of their original purpose, but they are actually functioning as a waterworks supplying residential users and are to be reported separately in classification 1507-02.

Applies to establishments engaged in the operation of water purification and distribution systems known as waterworks. Water is obtained from natural sources of surface or groundwater, piped to filtration plants, filtered, treated with chemicals, then pumped to holding facilities for eventual distribution to the user through underground pipes. Waterworks may be owned by cooperatives, such as homeowners' associations, a private company, or a municipality (as a P.U.D.). Work contemplated by this classification includes, but is not limited to, erection of towers and tanks, underground waterline construction, maintenance of purification and filtration facilities, installation of fire hydrants, operating a laboratory, main-to-house hook-ups and the installation and reading of meters when done by employees of an employer having operations subject to this classification. Machinery and equipment includes, but is not limited to, excavating, pipe laying, erecting and welding equipment, vehicles, machine shop equipment, pumps and gauges, meters and hand tools. This classification includes the operation of sewerage treatment plants by owner or contract.

This classification excludes: Contractors engaged in underground waterline construction, maintenance or repair, including main-to-house hook-ups, who are to be reported separately in classification 0107; plumbing contractors engaged in waterline main-to-house hook-ups as part of an all-inclusive plumbing installation contract which is to be reported separately in classification 0306; the erection of water towers and tanks by a contractor which is to be reported separately in classification 0508; contractors engaged in industrial plant maintenance who are to be reported separately in classification 0603; the construction of dams which is to be reported separately in classification 0701; the construction of any new buildings which is to be reported separately in the construction classification applicable to the work being performed; and clerical office and administrative personnel who are to be reported separately as appropriate, classification 5305 for cities and towns, classification 5306 for counties, or classifications 4904 and 6303 for nonmunicipal.

• Businesses engaged in the reduction of coarse ores by a wet or dry process without the application of heat at a mine site.

• Businesses milling ores to recover nonmetallic minerals, that do not require amalgamation or flotation, at a mine site.

• Crushing, screening, and washing ores;

• Rotating ores in a cylindrical mill containing steel balls, flint pebbles, rods or rock for further grinding;

• Amalgamation - Introduction of a chemical such as mercury to break down the ores into parts to obtain concentrated ores of metals;

• Flotation - Using water to separate parts by buoyancy and density to obtain concentrated ores of metals;

• Milling ores without amalgamation or floatation to recover nonmetallic minerals.

• Underground mining operations are classified in 1702;

• Open cut mining operations are classified in 1703.

• Businesses engaged in underground mining, not covered by another classification (N.O.C.), involving the extraction of coal, ores, stone, clay, or other minerals;

• Businesses engaged in the manufacture of coke which is a solid carbonaceous residue obtained from bituminous coal after the removal of volatile materials by a distillation process.

• Underground mining and the incidental activities occurring above ground - Underground mining may involve shaft sinking, slope sinking, rock tunneling, and the building of drifts and shafts with heavy timbers or steel beams. Material is broken loose within the tunnel or shaft with explosives, drilling machines, rock drills, chippers, power hand drills, and picks. The material is then removed from underground by hoist, conveyor, or some type of haulage car on steel track. On the surface, some extracted material is further refined. For example, coal is crushed, screened, washed, and graded before being hauled away.

• Manufacture of coke - Coke is a solid carbonaceous residue obtained from bituminous coal after the removal of volatile materials by a distillation process. Coal is fed into crushers which break down oversized pieces. The coal is baked in airless kilns or beehive coke ovens at high temperatures removing volatile materials leaving behind the coke.

• Ore reduction involving heat processes.

• Bulldozers;

• Chippers;

• Communication systems;

• Conveyors;

• Crushers;

• Drilling machines;

• Elevators;

• Explosives;

• Front end loaders;

• Haulage cars on tracks;

• Hoists;

• Lighting systems;

• Picks;

• Pipes to carry water;

• Power hand drills;

• Rock drills;

• Trucks;

• Ventilation systems.

• Ore reduction operations that do not require the use of heat are classified in 1701.

• Open cut mining is classified in 1703.

All types of open cut mining, also commonly referred to as surface mining, open pit mining, or strip mining, whereby ores and minerals are extracted from a large hole or pit on the surface.

• All types of ore;

• Asbestos;

• Asphalt;

• Chalk;

• Graphite;

• Gypsum;

• Mica;

• Phosphate rock;

• Talc.

• Excavating and stripping the surface material with use of drag lines, power shovels or earth moving equipment.

• Loading products onto dump trucks or belt conveyors for movement to railroad sidings.

• Loading into ore cars for shipment to processing plants.

• Hydraulic mining – Material is excavated by moving a stream of high pressure water over the mining face.

• Placer mining – Obtains minerals from placers by use of running water such as on a stream or the shoreline.

• Bulldozers;

• Compressors;

• Conveyors;

• Drag lines;

• Pneumatic drilling rigs;

• Scrapers;

• Shovels;

• Trucks.

• Underground mining is classified in 1702;

• Quarrying is classified in 1704.

Businesses engaged in quarrying to extract large solid rock from hillsides or open pits, not covered by another classification (N.O.C.).

• Ballast rock;

• Cement rock;

• Coral rock;

• Granite;

• Limestone;

• Marble;

• Sandstone;

• Shale rock;

• Slate.

• Exposing rock with use of drag lines, power shovels, scrapers, or other earth moving equipment;

• Blasting large rock masses with explosives to break portions loose;

• Separating the rock into large blocks, sometimes called loafs;

• Cutting a loaf using line drilling, wire sawing, diamond wire sawing, or chiseling methods;

• Removing loafs from the quarry pit and taking them to the surface;

• All other activities on the surface of the quarry site, which could involve further cutting of the loafs or crushing of rock into smaller pieces.

• Open pit mining operations are classified in 1703;

• Underground mining is classified in 1702.

• Businesses smelting, sintering, or refining lead or ores not covered by another classification (N.O.C.).

• Businesses manufacturing calcium carbide.

• Businesses operating iron or steel rolling mills.

• Businesses recovering, refining, or reprocessing metals. (These are secondary processors or reprocessors to primary metal producers. The primary producer uses ore to manufacture metal. The secondary processors or reprocessors use course metal to recover, refine, or reproduce refined metals.)

• Smelting lead ore: The smelting process uses heat and chemical reactions to fuse or separate metallic elements. The lead ore most commonly mined is galena, which is the sulfide of lead. The process begins by crushing, washing, and screening the ore. In its raw form, the ore is often mixed with other metalliferous minerals, such as sphalerite, copper pyrites, and iron pyrites. There may be various steps of milling, concentration, or amalgamation (floatation) to separate the galena from the sphalerite and other minerals. The roasting or sintering takes place in rotary kilns or other types of furnaces. The material is sintered, converted into lumps called sinter, and then mixed with coke and placed into a shaft furnace. The material is desilvertized by adding metallic zinc and raising the temperature to dissolve the silver into the zinc, which floats to the top and can then be removed. The molten metal is cast into ingots. The ingots may go through further refining processes or be considered a finished product.

• Smelting ores: Smelting and sintering are refining processes that use different properties of heat and chemical reactions to fuse or separate metallic elements. Temperatures are usually lower than 1400 degrees Fahrenheit. Ore comes in a variety of forms such as, but not limited to, pellets, particles, molds, and briquettes. The process begins by crushing, washing, and screening. There are various steps of milling, concentration, or amalgamation. The sintering process takes place in rotary kilns or other types of furnaces. The material is converted into lumps and placed into a shaft furnace. The molten metal ore is cast or recast into ingots. The ingots go through further refining processes.

• Calcium carbide production: Calcium carbide is a crystalline material produced by heating pulverized limestone or quicklime with carbon and used to generate acetylene gas, as a dehydrating agent, and used to make graphite and hydrogen.