PART 1: GENERAL PROVISIONS
Purpose and objectives.
Acronyms and definitions.
Applicability and relationship to other statutes and regulations.
PART 2: APPROVAL AND PERMITTING PROCESS
Subpart A - New Construction
Site review—Predesign report, soil characterization, and site inspection.
Environmental review—Site risk survey and hydrogeology report.
LOSS 14,500 gpd and below—Operating permit application and approval to construct.
LOSS greater than 14,500 gpd—Operating permit application.
LOSS greater than 14,500 gpd—Public notice.
LOSS greater than 14,500 gpd—Operating permit and approval to construct.
Subpart B - First Department Operating Permit for Existing LOSS
LOSS constructed on or before July 1, 1984.
LOSS with current permit from department of ecology or local health jurisdiction.
LOSS constructed after July 1, 1984, without current operating or discharge permit.
Subpart C - Permitted LOSS
Operating permit renewals.
Operating permit requirements and conditions.
PART 3: SITE AND ENVIRONMENTAL REVIEW REQUIREMENTS
Site review—Predesign report.
Subpart B - Environmental Review
Environmental review—Site risk survey.
Environmental review—Hydrogeology report.
Subpart C - Site Standards
Minimum land area.
PART 4: ENGINEERING REQUIREMENTS
Operations and maintenance manual.
Monitoring and reporting plan.
Plans and specifications.
PART 5: CONSTRUCTION REQUIREMENTS
Installer qualifications and responsibilities.
Construction oversight and testing.
Water tightness testing of sewage tanks.
Department final inspection.
PART 6: DESIGN AND TECHNICAL STANDARDS
Subpart A - General Requirements
General design requirements.
Design requirements to allow monitoring and maintenance.
Collection, conveyance, and other piping appurtenances.
Subpart B - Specific Technologies
Public domain and proprietary technologies.
Subsurface drip systems.
Sand-lined trenches and beds.
Intermittent sand filters.
Recirculating gravel filters.
Cesspools and seepage pits.
Holding tank sewage systems.
PART 7: LOSS OPERATIONS REQUIREMENTS
Subpart A - Routine Operations
Operations and maintenance requirements.
Reliability and emergency response.
Operator qualifications and responsibilities.
Sewage tank management.
Connection to a sanitary sewer system.
PART 8: WAIVERS, ENFORCEMENT, AND APPEALS
Notice of decision, appeals, and adjudicative proceedings.
Third-party appeals to department permit decisions for LOSS over 14,500 gpd and adjudicative proceedings.