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1 INFORMATION SHEET SAN JOAQUIN COUNTY AND THE CITY OF TRACY CORRAL HOLLOW SANITARY LANDFILL CLASS III LANDFILL SAN JOAQUIN COUNTY San Joaquin County and the City of Tracy jointly own a Class II -2 waste disposal site in Section 18, T3S, R5E, MDB&M, comprised of Assessor's Parcel Numbers -_253-03-005, and 006. The 45 -acre site is approximately 5 miles south of Tracy along Highway 580. The facility is operated by the City of Tracy, with all engineering performed by San.Joaquin County. The revised WDRs replace Order No. 75-115 and reclassify the site from a Class II -2 to a Class III landfill under the new Subchapter 15 requirements. The landfill accepts municipal solid waste including residential, commercial, construction, demolition, agricultural wastes and tires. The' discharge rate is approximately 1000 cubic yards per day. The trench method of landfilling is used at the site. This involves constructing lifts of waste with continual compaction during placement. Current plans indicate that the existing facility will reacdca.p�acity, at a arliilsis by January 1993. The total cape 9 in approximately 798,000 cubic yards. The climate in the area is typical of that in the Sacramento Valley. Summers are hot and dry, while winters are mild and wet, with most of the yearly precipitation in the months from November to March. The topography is that of rolling foothills to the southwest, and the broad valley to the northeast. Land in the area is used mostly for pasture land with a small bit of agriculture. Ground water under the site is at approximately 200 feet in depth. There is a perched aquifer in the upper half of the Corcoran clay, which is approximately 50 feet thick on the east side of the site and thin rapidly and pinches out near the western edge, at a depth of about 20 feet. The deep ground water is used for domestic, municipal, agricultural, and industrial supply. JKT:jj 11 u 0