18 AAC 72.275. Disposal systems

(a) The department will approve plans for construction of a marine outfall if

(1) the submittal requirements of 18 AAC 72.205(a) are met;

(2) design or design criteria for the following parameters meet the requirements of 18 AAC 72.220:

(A) design flows, waste loads, and pipe material;

(B) siting with respect to health hazards, nuisance potential, and flooding;

(D) bedding and backfill;

(E) anchoring systems;

(F) thermal protection considerations;

(3) the provisions of 18 AAC 72.050 are met;

(4) the provisions of 18 AAC 72.245(3) - (7) are met;

(5) the materials, methods, and techniques used to install and secure the outfall line prevent structural damage to or movement of the outfall as a result of wave action within the surf zone, storms, beach logs, ice, settling, or current;

(6) mixing and dilution calculations show that for the outfall line chosen, the line's length, grade, orifice size and numbers, depth, and distance out from shore provide for effluent dispersion and dilution sufficient to meet permit terms and conditions and to otherwise comply with AS 46.03, this chapter, and 18 AAC 70;

(7) for a gravity sewer extending into the receiving waters, a manhole or clean-out exists at the shore end to allow access for maintenance;

(8) the plans contain a provision to sample the effluent before the effluent mixes with the receiving waters; and

(9) the effluent does not threaten an aquatic farm or a commercial or subsistence shellfish harvest area.

(b) The department will approve plans for the construction of a land surface disposal system if

(1) the submittal requirements of 18 AAC 72.205(a) and (f) are met;

(2) design or design criteria for the following parameters meet the requirements of 18 AAC 72.220:

(A) design flows, waste loads, and pipe material;

(B) siting with respect to potential for health hazards, nuisances, flooding, or effect on groundwater;

(C) assimilative capacity of the soil and associated flora, and the ultimate fate of affected groundwater or surface water;

(D) methods to control operational variables;

(E) thermal protection considerations;

(3) the provisions of 18 AAC 72.245(3) - (7) are met;

(4) the applicable provisions of 18 AAC 72.050 are met;

(5) the person discharging domestic wastewater onto the land

(A) owns the land treatment area; or

(B) has written authorization from the landowner to discharge domestic wastewater onto the land;

(6) the land treatment area is protected against public access;

(7) the topography, hydrology, geology, and soil characteristics of the land treatment area are adequate to protect existing and potential water and land uses outside the land treatment area, including subsistence, housing, education, industry, recreation, and agriculture; and

(8) the method of discharge prevents transmission of disease.

(c) The department will consider other means of final disposal on a case-by-case basis for whether they are protective of public health, public and private water systems, and the environment.

History: Eff. 4/1/99, Register 149

Authority: AS 44.46.020

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