18 AAC 72.270. Collection and pumping systems

The department will approve plans for construction of a collection and pumping system if

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

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

(A) design flows, conduit velocities, and pipe materials;

(B) hydraulic grade line considerations associated with pressurized portions of a sewer line;

(D) pump station, collection station, or holding tank capacities;

(E) overflows, alarms, solids handling, provisions for servicing, and emergency operations;

(F) manhole or cleanout placement, and methods for cleaning the collection system;

(G) siting with respect to health hazards, nuisance potential, stream crossings, and flooding;

(H) bedding and backfill;

(I) thermal protection considerations;

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

(4) the mean conduit velocity design conforms to 18 AAC 72.040(b) (4), unless a waiver is granted under 18 AAC 72.040(c) ;

(5) the system discharges to an approved domestic wastewater treatment works;

(6) pump stations and collection stations, other than those designed for pumping from individual service connections or onsite septic tanks, are equipped with at least two pumps, each of which pumps flows equal to or in excess of the design flow;

(7) the size of pipe for sewer lines complies with 18 AAC 72.040(b) (4) unless a waiver is granted under 18 AAC 72.040(c) ; and

(8) the collection and pumping system is proposed to discharge to an existing collection or disposal system, and adequate documentation shows that the

(A) receiving system has sufficient capacity to accommodate flows expected from the proposed discharge; and

(B) the owner of the receiving system has approved the discharge.

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

Authority: AS 44.46.020

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