(1) Applicability. These standards apply to all MSWLF units that receive wastes on or after October 9, 1993, except as provided by 40 CFR 258. MSWLF units that accept waste after October 9, 1991, but cease to accept waste prior to October 9, 1993, shall at a minimum comply with subsections (2)(a) and (3) of this section in addition to the "sanitary landfill closure guidance" criteria as adopted by the health district.
(2)  Cover designs. Owners or operators of MSWLF units shall install one (1) of the following final cover systems:
(a)  A cover as provided under 40 C.F.R. § 258.60(a); or
(b)  The cover material must be fine-grained with intrinsic permeability no greater than 1 X 10-3 cm/sec and a minimum thickness of twenty-four (24) inches; and
(i)   Have capillary holding capacity greater than the projected maximum accumulated volume of water as determined by utilization of accepted water balance methodology based on local or regional twenty-five (25) year climatic records;
(ii)  Annual precipitation is less than twenty-five (25) inches with net evaporative losses greater than thirty (30) inches annually;
(iii) The top six (6) inches of the cover shall be capable of sustaining shallow rooted native plant growth; and
(iv)  This design shall demonstrate consideration of site specific factors as provided in 40 C.F.R. § 258.60(b); or
(c)  As provided in 40 C.F.R. § 258.60(b).
lawyer at desk

Ask a legal question, get an answer ASAP!
Click here to chat with a lawyer about your rights.

Terms Used In Idaho Code 39-7415

  • Cover material: means soil or other suitable material that is used to protect the active portion of the MSWLF unit. See Idaho Code 39-7403
  • Deed: The legal instrument used to transfer title in real property from one person to another.
  • Health district: means one (1) of the seven (7) district health departments of the state of Idaho. See Idaho Code 39-7403
  • Landfill: means an area of land or an excavation in which wastes are placed for permanent disposal, and that is not a land application unit, surface impoundment, injection well or waste pile. See Idaho Code 39-7403
  • Permeability: means the capacity of a material to transmit a liquid. See Idaho Code 39-7403
  • Post closure: means the requirements placed upon the MSWLF unit after closure to ensure their environmental safety for a thirty (30) year period or until the site becomes stabilized in accordance with section 39-7416, Idaho Code. See Idaho Code 39-7403
(3)  The final grade of slopes shall be greater than two percent (2%) unless otherwise supported by the post closure plan and uses approved by the health district, and the grade of side slopes not more than thirty-three percent (33%).
(4)  Closure plan preparation, placement in operating record, notice of intent to close, time requirements for commencement and completion of closure activities, certification, deed notation and removal of deed notation shall be conducted as provided in 40 C.F.R. § 258.60(c) through (j), inclusive. The deed notation and removal of deed notation shall comply with the uniform environmental covenants act, chapter 30, title 55, Idaho Code.