COMPLIANCE INFO_1973-2003 - Laserfiche WebLink

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r • • Response: Section 17710 of Title 14, California Code of Regulations, states: "Covered surfaces of the disposal area shall be graded to promote lateral runoff of precipitation and to prevent ponding. Grades shall be established of sufficient slopes to account for future settlement of the fill surface. Other effective maintenance methods may be allowed by the Enforcement Agency. " To the extent possible due to pre-existing topography of the site, the surface is graded to promote lateral runoff of precipitation. It is Kleinfelder°s opinion that the ponding observed during the March 6, 1992 inspection is insignificant, especially in light of the fact stated in the inspection report that the inspection occurred during intermittent rain showers. Nonetheless, actions will be taken by Cove Contractors to regrade the area so that runoff will flow towards the low portion of the site. As indicated in the RDSI, continued compliance with 14 CCR § 17710 will be achieved during operations by grading and active pumping from a collection sump located at a low point of the site. The RDSI plans (Dwg. 2-4) call out a grading plan (Phase 1, Dwg 2) which will be sloped to the sump area. Before filling operations resume and as an addendum to the RWD and RDSI, Cove contractors will submit details of the sump and drainage plan that will further address the routing, collection and disposal of rain water that falls on the landfill. Comment 3: 17684- Exposed ASW is present through out the site. Intermediate cover of 12 inches minimum shall be placed through out the site. Response: Cove Contractors achieved compliance with 14 CDR § 17684 because the required soil cover previously was placed over the exposed ASR. Evidence for this is contained in the 1988 Solid Waste Assessment Test Report, Appendix C. This appendix contains details of an investigation at the site where a number of backhoe pits were excavated. Most of the pit logs indicate a mixture of soil and ASR at and near the ground surface. If, over time, ASR has been exposed, Cove Contractors will apply cover soil to exposed ASR. Comment 4: 17708- Erosion is occurring in the excavation. This shall be repaired to prevent further erosion. Response: Section 17708 of Title 14, California Code of Regulations, states: "Adequate drainage shall be provided. If erosion occurs, it shall be promptly repaired with steps taken to prevent further occurrence. " CM8-92-66 Page 2 of 3 Copyright 1492 Kleinfelder, Inc. KLEINFELDER 3077 Fite Circle, Sacramento, CA 95827 (916) 366-1701