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VOCs <br /> All VOCs reported were also reported in quality control blanks and are therefore "false positives". <br /> p p <br /> These compounds included: <br /> • Acetone Chloromethane and Methylene Chloride in wells MW-1 and MW-3 <br /> • Acetone was in well MW-2R <br /> • Acetone and Methylene Chloride in well LW-1. <br /> Surface Water <br /> There was no flowing water during the second semester monitoring event. <br /> GROUNDWATER FLOW DIRECTION <br /> Groundwater levels were measured in monitoring wells MW-1, MW-2R, and MW-3 during the <br /> third and fourth quarters of the calendar year. Groundwater was determined to flow towards the <br /> southwest(Figure 3). The groundwater gradient is 0.0019 foot per foot, calculated from the <br /> contours drawn. <br /> STANDARD OBSERVATIONS <br /> Regular site inspections were performed during the second semester of 2003. A summary of the <br /> standard observations for the semester has been compiled(Appendix G). A signature on the form <br /> certifies that all observations were performed and are accurate. <br /> RUN-OFF/RUN-ON FACILITIES <br /> The Foothill Sanitary Landfill utilizes several methods to control run-on and run-off. The natural <br /> topography of the area controls any run-on into the site. Also, the working area is a significant <br /> distance from the property boundary, so run-on from surrounding properties is minimal. To <br /> control run-off, a perimeter ditch along the north, west and east ends of the unit directs all storm <br /> water run-off into a sedimentation basin on the east side of the site. The rest of the run-off from <br /> the unit gathers into a temporary sedimentation basin that is the excavation of a future module. <br /> There were no breeches to any of the run-on/run-off facilities during this monitoring period. They <br /> will continue to be monitored in the future. <br /> R <br /> " Foothill Sanitary Landfill 4 Department of Public Works/Solid Waste <br /> 2ND Semester/Annual 2003 Groundwater Monitoring County of San Joaquin-January 30,2004 <br />