463-60-175  <<  463-60-185 >>   463-60-195

Proposal—Characteristics of aquatic discharge systems.

(1) Where discharges into a watercourse are involved, the applicant shall identify outfall configurations including:
(a) Location(s) of water discharge pipeline or conveyance system, the outfall, and any associated dilution systems;
(b) Average and maximum discharge rate;
(c) Extent of the dilution zone if necessary;
(d) Width of the receiving water body at the outfall location;
(e) Dimension(s), and rated and maximum carrying capacity of the water discharge pipeline or conveyance system, the outfall structure and any associated dilution systems;
(f) Depth and width of the receiving water body at the discharge point;
(g) Average, minimum and maximum water velocity of the receiving water body at the discharge point, and the times when the maximum and minimum flows occur.
(2) Where discharges are into a water-course via an existing discharge system for which certification is not being sought, the applicant shall also provide the following information:
(a) Ownership of the discharge conveyance system;
(b) A description of, and the terms and duration contained in, the use agreement that allows the applicant to use the discharge conveyance system;
(c) Identification of the party responsible for operation and maintenance of the discharge conveyance system;
(d) NPDES or state wastewater discharge permit number for the existing system discharge;
(e) Location of connection point into the existing discharge system;
(f) Diameter and rated and maximum volume capacity of the wastewater line or conveyance system into which discharge is being proposed;
(g) Existing, rated and maximum flow levels in the wastewater line or conveyance system into which the discharge is being proposed;
(h) Where a discharge is proposed to a publicly owned treatment works, in addition to the items provided in subsections (1) and (2) of this section, the applicant shall provide an engineering analysis showing that the proposed discharge will not cause the waste treatment facility to exceed capacities or to violate its authorized discharge limits, including both the quality of the discharge and the volume of the discharge, or to violate the permits governing its operation.
[Statutory Authority: RCW 80.50.040 (1) and (12). WSR 04-21-013, amended and recodified as § 463-60-185, filed 10/11/04, effective 11/11/04. Statutory Authority: RCW 80.50.040(1) and chapter 80.50 RCW. WSR 81-21-006 (Order 81-5), § 463-42-185, filed 10/8/81. Formerly WAC 463-42-440.]
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