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III. Environmental Setting, Impacts, and Mitigations <br /> K. Hydrology,Geohydrology, and Water Quality <br /> The mitigation measures described above would reduce this impact to a less-than-significant <br /> level. <br /> Impact K.B. Potential seepage of leachate from the landfill expansion would cumulatively <br /> affect water quality if not properly mitigated. (SIGNIFICANT) <br /> The expansion of the landfill would abut the northern boundary of the Forward,Inc.Landfill. <br /> Should leachate from both the Austin Road Landfill and the Forward,Inc.Landfill escape their <br /> respective leachate collection and recovery systems,the combined seepage would significantly <br /> affect water quality in the area. Having more than one landfill in the area would also complicate <br /> the identification of the source and determination of an appropriate Corrective Action Plan. <br /> Mitigation Measure K.B. <br /> Mitigation Measures K.S. and K.6. would minimize the potential for the seepage of leachate from <br /> the Austin Road Landfill,reducing this impact to a less-than-significant level. It should be noted <br /> that the seepage from the existing facilities(both Austin Road Landfill and Forward,Inc. <br /> Landfill) are traveling in opposite directions,eliminating the potential for comingling(San <br /> Joaquin County, 1993). <br /> REFERENCES-Hydrology,Geohydrology,and Water Quality <br /> California Department of Water Resources sources (DWR),Hydrologic Data 1985 Volume II: <br /> Northeastern California,DWR Bulletin 130-85,May 1988. <br /> City of Stockton, General Plan,Background Report,Adopted January 22, 1990. <br /> City of Stockton, General Plan,Policy Document, Adopted January 22, 1990 and Amended <br /> February 25, 1991 and August 26, 1991. <br /> City of Stockton,Report of Waste Discharge, Austin Road Landfill, Stockton,CA,certified <br /> October 17, 1988. <br /> Federal Emergency Management Agency(FEMA),Flood Insurance Rate Map,City of Stockton, <br /> California,San Joaquin County,Community-Panel Number 060302-0045 D,Revised <br /> February 4, 1988. <br /> Federal Emergency Management Agency(FEMA),Flood Insurance Rate Map,San Joaquin <br /> County,California(Unincorporated Areas) ,Community-Panel Number 060299-0465 B, <br /> Revised July 4, 1988. <br /> III.K.19 <br />