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1 OTHER ANALYSIS <br /> Groundwater samples were collected from landfill supply well LW-1 and analyzed for all monitoring and <br /> field parameters. The well is not a point of compliance, as stated in the WDRs. Results are included in <br /> Table 2 and Appendix E. <br /> LEACHATE COLLECTION AND RECOVERY SYSTEM - PROCEDURES & MAINTENANCE <br /> Facilities <br /> The leachate collection and recovery system (LCRS) for Module 1 was designed in accordance with Title 27, <br /> Section 20340(g). This system consists of: <br /> ■ East/west oriented collection troughs running the entire length of Module 1 <br /> ■ A 4-foot deep sump at the southeast corner of the Module <br /> ■ A leachate removal pump installed in anl8-inch diameter HDPE pipe <br /> ■ A 2-foot deep secondary extraction trench beneath the primary composite liner, with 12-inch HDPE <br /> riser pipe <br /> ■ A pumping system that allows recording of leachate flows and volumes <br /> ■ A 10,000 gallon leachate storage tank <br /> Pumping Procedures <br /> Leachate drains by gravity to the Module 1 sump, from which it is pumped to the 10,000-gallon storage tank <br /> by the pump installed in the sump. The pump operates automatically,based on leachate level within the <br /> sump. Control points for the pump are: <br /> SPump Off 12" Pump On: 36" Alarm:48" <br /> ' Operation of the pump is conditional upon sufficient water in the sump and available capacity in the leachate <br /> tank. Electrical controls include a high level alarm set at the maximum design leachate level for the sump. <br /> The alarm is activated if the leachate exceeds the alarm level. The alarm level is chosen to maintain the head <br /> on the module base below the maximum allowed 12 inches. <br /> The leachate storage tank facility includes secondary containment(consisting of a concrete vault surrounding <br /> the tank) and a truck loading area. Electrical controls for the leachate storage tank include a high level <br /> sensor that will sound an alarm and disable the leachate sump pump to prevent overtopping of the tank. <br /> Disposal <br /> Leachate is applied to the waste surfaces or travel surfaces within Module 1 in accordance with the WDR. <br /> Leachate is either pumped directly from the sump to the active face, or pumped to the storage tank from <br /> which it is removed by water truck to Module 1. At no time was leachate returned to Module"I". <br /> Foothill Sanitary Landfill 10 Department of Public Works/Solid Waste <br /> 1-"Semester Groundwater Monitoring County of San Joaquin—July 31,2007 <br />