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GROUNDWATER FLOW DIRECTION ' <br /> Groundwater levels were measured in monitoring wells MW-1,MW-2,and MW-3,on January 15, <br /> 2001. Groundwater flow, as shown in figure 2, is inferred to be toward the southwest. The ' <br /> groundwater gradient is 0.0017 foot per foot, and it was calculated by dividing the difference in <br /> elevation between the 49.0 and 51.0 foot contours(2.0 feet),by the measured distance between them <br /> (1170 feet). , <br /> STANDARD OBSERVATIONS <br /> Weekly site inspections have been performed during the first quarter of 2001 and in prior quarters. ' <br /> A summary of the weekly observations for the quarter can be found on the form in Appendix F. A <br /> signature on the form is the certification 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 works to control any run-on into the site. Also, the working area is a <br /> significant distance from the property boundary,so run-on from surrounding properties is minimal. <br /> To control run-off,a perimeter ditch along the north and east ends of the unit direct all storm water <br /> run-off into a sedimentation basin on the east side of the site. The rest of the run-off from the unit <br /> gathers into a temporary sedimentation basin that is the excavation of a future module. During the <br /> first quarter of 2001 there were no breeches to any of the run-on/run-off facilities, and they will <br /> continue to be monitored in the future. <br /> N:\Michael\FFI\GWmon\lstOlrep.wpd ' <br /> 7 <br />