4.2. SR 02-24-1997 - Laserfiche WebLink

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Page 2 February 5, 1997 Compliance Bounda~ - General The main feature is that the compliance boundary represents a line on the map and does not include an adequate number of monitoring wells to assess the groundwater impact of facility. Wells must be located at the compliance boundary in order to generate data which can be used to determine compliance. Item Part III.B.3 of the draft permit identifies this condition and requires the installation of monitoring wells at the compliance boundary. The City and the County will closely evaluate the permittee submittals to ensure that appropriate well installation is accomplished under the requirements of the Phase III Water Monitoring System Work Plan implementation. The following items correspond to the draft permit directly. Comments are provided which could be used as a basis for language within the permit. Part I.C. - Facility Description. The permit authorizes disposal of municipal solid waste (MSW) in ceils 10 through 13. It is apparent that the lined cell 6 has not achieved final elevation. Cell 6 should therefore be added to the authorized area. The "effective date" of the authorized volumes should be identified. Part I.D. 1 - Liner and Leachate Collection System. The thickness of the drainage layer should be specified to maintain consistency with other requirements of the item. Part I.D.2 - Leak Detection System. Facility construction should include devices to detect potential leakage through the primary pipe of the leachate transmission line and potential leakage from leachate collection tanks. Part I.D.4 - Retention Ponds. The final design of the stormwater retention and sedimentation ponds should identify the allocation of volume per stage considering lost capacity from collected sediments. Part I.H. - Construction Certification. The certification report should include at a minimum the following items: 1) 2) 3) 4) 5) 6) 7) 8) 9) Ail relevant construction specifications; All shop drawings for prefabricated components; Photo documentation of all critical aspects of construction; Deflection testing results for leachate collection and transmission pipes; Narrative description of all as-built variances from the plans and/or specifications; As-built cross-sections of the liner subgrade; As-built elevations for all pipe inlets and outlets and pump-on/pump-off controls; Completed manufacturer warranties; All physical testing results. Part I.J. Buffer Zone (new item). A Buffer Zone of not less than 200 feet should be established within the perimeter of the Landfill Property around the waste disposal areas. Within this Buffer Zone, no waste disposal may occur. The permittee should place an earth berm, landscaped with evergreen trees and protected from erosion, at the outside perimeter of the Buffer Zone. Where the Buffer Zone contains heavily wooded areas, exception to installing the