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A KLEI-NFELDER <br /> I SITE CHARACTERISTICS <br /> Cove Contractors landfill is located in San Joaquin County at 3242 South El Dorado Street <br /> 1). According to the Mount Diablo Base and Meridian, the site is in <br /> in Stockton (plate 1. .Township I North, Range 6 East- <br /> the eastern half of the southeast quarter of Section 23, <br /> 1.1 RELATIONSHIP OF SITE, GROUND WATER,AND SURFACE WATER <br /> Contractors landfill is approximately 580 feet long in the north-sottt <br /> direction <br /> The Cove Contr direction. The bottom elevation of waste helandfill <br /> and 700 feet wide in the east-west proximatelv 20 feet below mean sea level <br /> is variable with an apparent maximum depth of ap d ranges from natural grade <br /> (-20 feet, m5l). The top elevation of the landfill is variable an <br /> + 16 feet, msll to approximately -9 feet, msl- The landfill is not capped. <br /> side of the landfill and is approximately 40 <br /> Duck Creek/Walker slough parallels the south s /Walker Slough appears to be <br /> er. The bottom of Duck Creek, <br /> feet from the landfill perimeter. -5 feet, msi, based on visual observations <br /> approximately 20 feet below natural grade, or <br /> Maps published by the Federal Emergency Management Agency <br /> Flood insurance Rate M I tors landfill is located within food <br /> B, the <br /> (FEMA , 1983) indicate that the Cove Contractors . <br /> 100-Year fl000d plain, defined as land areas protected by levees from the base the north side of the landfill. This pond is <br /> 'A small, intermittent, onsite pond is located on ear the <br /> topographically low with respect to the landfill and the pbe at or n <br /> and bottom may <br /> bottom of the waste. discussed in Section <br /> . the uppermost water bearing unit (Zone 111, <br /> The ground water in Lj:ust, 1988. Portions Of <br /> 13 2) was at an elevation of approximately -17 feet, rnsl during Aug surface nralis <br /> efr <br /> d to below the potentiometric <br /> the landfill floor appear to have been excavate W-3 indicates waste mates <br /> to Plate 1.191 Zone 11 Isopach). The boring log from M water in the onsite <br /> nelIIl.tions,present below the potentiometric surface. Based on wate <br /> pond appears to represent the potentiometric surface in Z o <br /> oration for MW-5 and MW-6, located between the landfill water an <br /> Based on hydraulic inford <br /> Duck Creek/Walker slough (refer to Cross Section, Plate 1 1.16), the uppermost <br /> COVE-1 <br />