18 AAC 60.485. Industrial solid waste

(a) The requirements of this section apply to the owner or operator of a monofill that accepts industrial solid waste.

(b) A new industrial solid waste landfill and a lateral expansion of an existing industrial solid waste landfill must be designed and constructed with a liner and leachate collection system that meet the standards in 18 AAC 60.330(b) .

(c) Waste placed in an industrial solid waste landfill must be spread and compacted in a manner that minimizes future settlement and instability. The surface of the industrial solid waste landfill may not be sloped more steeply than a 3:1 grade.

(d) The owner or operator of an industrial waste monofill shall install a final cover system designed and constructed to minimize

(1) infiltration through the closed landfill by use of an infiltration layer that contains at least 18 inches of earthen material with a permeability no greater than 1 x 10 -5 centimeters per second; and

(2) erosion of the final cover by use of an erosion layer that contains at least six inches of earthen material capable of sustaining native plant growth.

(e) The department will approve an alternative to the final cover design required under (d) of this section if the applicant demonstrates that the proposed design

(1) will protect public health, safety, and welfare, and the environment; and

(2) includes

(A) an infiltration layer that achieves an equivalent reduction in infiltration as the infiltration layer specified in (d)(1) of this section; and

(B) an erosion layer that provides equivalent protection from wind and water erosion as the erosion layer specified in (d)(2) of this section.

History: Eff. 10/29/98, Register 148

Authority: AS 44.46.020

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