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10/10/91 10:13 'x`916 366 7013 SACRAMENTO 009/018 40 do performed by Kleinfelder for the SWAT (Appendix F, See Plate 1.14) and review of historical aerial photographs for the disposal site and clay mining operations. A discussion of the existing waste based on historical data is in B-1.2 of the RDSI. Comment on Section D-1: "RDSI indicates dirt access roads for the site. Section 17484 Title 14 CCR states roads shall minimize dust and tracking of material onto adjacent paved public roads. How will this be resolved?" Dirt roads are commonly used at disposal sites for access to fill areas. As mentioned in the comment on Section A-8 above, a water truck will be used for dust control, as needed. It is anticipated that the site access roads may only require application of water occasionally for wind for periods during the dry months of operations for periods of peak usage to control dust. The roads will be compacted when constructed, and will also be subject to continued compaction from traffic. During wet weather months, dust control should not be a problem and the roads will have gravel applied as needed to prevent the road from becoming muddy, which would cause vehicles to become stuck. It should be noted that there is approximately 140 feet of existing concrete pavement in the entrance area which will be travelled on by trucks exiting the site. The majority of dirt from access roads which could accumulate on the tires of trucks using the site will probably be deposited on this portion of pavement rather than being tracked on to South El Dorado Street. Comment on Section 3-l: "Map D-1 shows interim storm nater storage area above the pit area and removal of water is by a portable pump. PHS feels this may contribute to the generation of leachate and requests an alternate storm water storage location with a well maintained mechanical automatically activated pump station. " The interim storm water collection area shown on Drawing 2 is in the western portion of the pit. Because it is below the grade of the surrounding topography and existing drainage ditch, the water will be lifted from the pit to the ditch just west of the site. Rather than a manually operated pump, as proposed in the December 10, 1991 RDSI, Cove Contractors will construct a storm water sump with a float driven pump to automatically pump water from the sump to the drainage ditch, which satisfies the PHS°s request. The sump will have an inlet installed in western portions of the pit at the lowest portion of the fill. This may require that the sump is reset prior to subsequent rainy seasons as the fall elevations in the pit increase prior to closure. "Addresses and telephone number of .lack Hecht, Nelson Linneol and Atsushi Fuji are not listed. The listed phone number is a business number and the listed address is a business address. A 24 hour emergency number is required per the permit desk manual. Page 8 of 10 Copyright 1991 Kleinfelder, Inc. KUINITH)FR '77 � I,. (-.i !!� i,u wnwnlo, CA 91817 (916) .inti -1701