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<br /> <br />Foothill Sanitary Landfill Page 20 of 52 San Joaquin County DPW - Solid Waste <br />Joint Technical Document Revised 01/05/2026 <br /> <br />The minimum separation between groundwater and refuse is approximately 140 ft, <br />which exceeds the minimum regulatory requirement of five feet (Table 3). <br /> <br />This estimate includes the effect of capillary rise, which is dependent upon the pore size <br />of the soil. Gravel and sand/sandstone are the predominant soil types at that elevation <br />(Appendix E). The sandstone is described as weakly or moderately cemented so the pore size <br />would be smaller than that of clean sand, but likely not as small as the pore size of clay. <br /> <br />Based on the information given, the maximum capillary rise at the site is estimated to be <br />3.25 feet. <br /> <br />5.3.8. Service Area <br />The facility receives refuse from the Tracy Materials Recovery Facility which <br />receives refuse from the City of Tracy, and from the Lovelace Transfer Station, which <br />itself receives refuse from commercial and self-haul customers from the cities of <br />Manteca, Stockton, and the surrounding areas within the county. <br /> <br />5.3.9. Entrance Features <br />The main entrance road is paved and currently extends from Waverly Road to <br />the scale house. All customers enter and exit by this road, minimizing tracking-out of <br />soil that may temporarily adhere to the tires of refuse vehicles. <br /> <br />5.3.10. Use by Transfer Vehicles <br />The active face is maintained to allow disposal by the transfer vehicles at the <br />active face, with sufficient area for these trucks to maneuver. <br /> <br />5.3.11. Use by General Public (Self-Haul) <br />Beginning January 10, 2026 disposal will be limited to commercial/contracted <br />haulers. Self-haul users will be directed to North County or Lovelace. <br /> <br />5.4. Cover <br />