Laserfiche WebLink
<br />STANDARD PROVISIONS AND REPORTING REQUIREMENTS, JANUARY 2012 - 13 - <br />FOR WASTE DISCHARGE REQUIREMENTS <br />FOR DISCHARGES REGULATED BY SUBTITLE D AND/OR TITLE 27 <br /> <br /> <br />7. In addition to the applicable provisions of Title 27, the preliminary closure <br />and/or the post-closure maintenance plans for MSW landfill units shall include <br />the following: <br /> <br />a. A description of the steps necessary to close all MSW landfill units at any <br />point during their active life in accordance with the cover design <br />requirements [40 C.F.R. § 258.60(c)]; <br /> <br />b. An estimate of the largest area of the landfill unit(s) ever requiring a final <br />cover at any time during the active life of the unit(s) <br />[40 C.F.R. § 258.60(c)(2)]; <br /> <br />c. An estimate of the maximum inventory of wastes ever on-site over the <br />active life of the waste management facility [40 C.F.R. § 258.60(c)(3)]; and <br /> <br />d. A schedule for completing all activities necessary to satisfy the closure <br />criteria in 40 C.F.R. section 258.60 [40 C.F.R. § 258.60(c)(4)]. <br /> <br />8. The final closure and post-closure maintenance plan for the waste management <br />unit shall include at least the following: an itemized cost analysis, closure <br />schedule, any proposed final treatment procedures, map, changes to the unit <br />description presented in the most recent ROWD, federal requirements for a <br />MSW facility, land use of the closed unit, and a construction quality assurance <br />plan [Title 27, § 21769(c) & (d)]. <br /> <br />9. Closure of each waste management unit shall be under the direct supervision of <br />a registered civil engineer or certified engineering geologist <br />[Title 27, § 20950(b)]. <br /> <br />10. The final cover of closed landfills shall be designed, graded, and maintained to <br />prevent ponding and soil erosion due to high run-off velocities <br />[Title 27, § 21090(b)(1)(A)]. <br /> <br />11. The final grading design shall be designed and approved by a registered civil <br />engineer or certified engineering geologist [Title 27, § 21090(b)(1)(C)]. <br /> <br />12. All final cover designs shall include a minimum 1-foot thick erosion resistant <br />layer [Title 27, § 21090(a)(3)(A)]. <br /> <br />13. The Discharger shall close the landfill with minimum 15-foot wide benches <br />every 50 vertical feet [Title 27, § 21090(a)]. <br /> <br />14. Final cover slopes shall not be steeper than a horizontal to vertical ratio of one <br />and three quarters to one and designs having any slopes steeper than a <br />horizontal to vertical ratio of three to one, or having a geosynthetic component,