Laserfiche WebLink
}a jq <br /> 14 <br /> w <br /> I Nab, <br /> 1.4 Topography and Geologic Setting SIERRA <br /> The site is located on lcvej ground. Surface water drainage is down to thi southeast, <br /> f' The site is located In the Eastern San Joaquin Basin ISJB)Hydrogeologic Study Area. The <br /> hk SJB has experienced severe overdraft for the last several years. Water levels have declined and <br /> E poor quality ground water from the Delta has moved cast toward the City of Stockton.' Water <br /> quality in the Stockton area has been affected and wells have been abandoned In the western part <br /> of the area, New wells have been drilled in the eastern part of the cityand ground water has been <br /> Supplemented with water from the Calaveras River through the Stockton-East Water District <br /> Aqueduct(p. 44). <br /> ! The site is Iocated in the Great Valley Geomorphic province which is a north-west trending <br /> asymmetric structural trough. The basin is crossed by two major faults,the Stockton fault,which <br /> separates the Sacramento and the San Joaquin sub-basins and the White Wolf fault in the <br /> southern part of the basin. The site Is underlain by Cenozolc non-marine alluvial deposits which <br /> consist of Interbedded sand, silt and claY.' 'The ground water.level at the stip was recorded at; <br /> appro*ately 45 ft below grade. in February 1987.5 .'MC ground water level has .dropped <br /> 'appmxtmately 10A since.1987: <br /> r The closest surface water is Fivemile Creek,approximate <br /> i 15'one-half mile to the nt,rthwest. <br /> 1.5 Water Well Survey <br /> A well survey was completed as part of this investigation. The well surrey consisted of a <br /> review of Department of Water Resources well records and an area reconnaissance. Thirty water <br /> w <br /> Y ' Ground water Hast-as Irt California, o,Callfornia De <br /> F I9gParument of Rater Resources Bulletin 11$•80,72 pp, <br /> I ' <br /> Geology of Northern Cahfarnla, <br /> Calffornia,plate 1. 1966-California Division of Mines and Geology Bulletin 190,Ccol0&Map of <br /> i m <br /> ° Groundwater Technology, 1987, Consultant's report <br /> appendices <br /> prepared Pared for ChnTon. February 27, 1967, a pp and 3 - - - - <br /> j Page 4 <br /> l <br /> i <br />