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nATION S <br /> SAN JOAQUIN COUNTY <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> CLASS III LANDFILL <br /> North County Recycling Center and Sanitary Landfill is in San Joaquin County approximately <br /> 9-miles east of Lodi, and 12 miles northeast of Stockton. The 320-acre site is owned and <br /> operated by the San Joaquin County Department of Public Works. <br /> The Landfill is currently regulated by Waste Discharge Requirements (WDRs) Order No. 94- <br /> 260. The landfill site is made up of eleven modules, two of which are currently being filled. <br /> These two modules are lined with 60-mil high density polyethylene (HDPE) installed above a <br /> 6-inch thick compacted soil layer. These waste discharge requirements approve an engineered <br /> alternative to the prescriptive RCRA Subtitle D liner design. The engineered alternative <br /> design will allow future expansion to include modules constructed of composite bottom liners <br /> with a geosynthetic clay component and a 60-mil HDPE synthetic component. Sidewall liners <br /> will consist of a single 80 mil HDPE liner with special constuction quality assurance features <br /> to prevent the installation of a defective liner. <br /> Land within 1000 feet of the facility is used for livestock grazing, agriculture, and some <br /> residential housing. The beneficial uses of ground water are domestic, municipal, agricultural, <br /> and industrial supply. Surface drainage from the site is to South Paddy Creek which crosses <br /> the site, and is an intermittent tributary to Bear Creek and Disappointment Slough, which flow <br /> into the San Joaquin River. The beneficial uses of these surface waters are domestic, <br /> municipal, agricultural, and industrial supply; ground water recharge; recreation; stock <br /> watering, esthetic enjoyment; fresh water replenishment and habitat; spawning; wildlife <br /> habitat; and the preservation and enhancement of fish, wildlife and other aquatic resources. <br /> The first water bearing formation is about 100 feet below the base of the landfill. The soils <br /> immediately underlying the landfill consist of 2 to 3 feet of a sandy loam underlain by <br /> approximately 1/2 foot of cemented hardpan. <br /> WJM:rev.27 Jan 1995 <br />