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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2009-0049 _3- SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS HARNEY LANE LANDFILL SAN JOAQUIN COUNTY the camp. Discharges to these ponds are regulated under separate, non-Chapter 15 WDRs Order No. 95-176. Two groundwater monitoring wells, shown in Attachment B, were installed at the camp in the 1980s to monitor these ponds. (Order No. 95-176 did not include a groundwater monitoring program, however, and the condition of these wells is unknown). 14. A March 2007 Department of Water Resources (DWR) well survey identified 55 supply wells within a one-mile radius of the site, including 47 domestic, 6 agricultural, and 2 combined domestic/agricultural wells. Additional parcels were identified that did not have well records, but likely have supply wells, including 229 parcels with private residences and 47 parcels designated as irrigated agriculture. One onsite industrial supply well was also identified. The results are summarized below. Wells Within one Mile Radius of Landfill DWR On Other Parcels' Well Type Survey Beyond Within Total 1,000-Feet 1-,000 Ft. Domestic 47 214 15 276 Agricultural 6 41 6 53 Combined 2 0 0 2 Industrial 0 0 1 1 1. Known or estimated based on parcel type and land use. The wells ranged from about 130 to 500 feet deep, averaging about 225 feet deep. 15. The site is not within a 100-year floodplain. SURFACE AND STORM WATER 16. Surface drainage in the area is to South Paddy Creek immediately south of the site, thence to Paddy Creek about 1.3 miles west of the site, Bear Creek, and Disappointment Slough, which is tributary to the San Joaquin River. 17. The Water Quality Control Plan for the Sacramento River and San Joaquin River Basins, Fourth Edition (hereafter Basin Plan) designates beneficial uses, establishes water quality objectives, contains implementation plans and policies for protecting waters of the basin, and incorporates by reference, plans and policies adopted by the State Water Resources Control Board. 18. The beneficial uses of the San Joaquin River (between Sack Dam and the mouth of the Merced River) are municipal and domestic supply; agricultural supply; industrial process supply; water contact recreation; non-contact water recreation; warm freshwater habitat; migration of aquatic organisms; spawning, reproduction and/or early-dev-elopmeA,-a-nd-wildaafe-habit-at.