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I <br /> WESTERN 1386 EAST BF_AMER STREET <br /> 95776-6003 <br /> W E�E— GEO-ENGINEERS WOODLAND CA <br /> (530) 6665-58-5 30000,, <br /> CALIF CONTRACTOR 4513857 FAX(530)662-0273 <br /> REGISTERED GEOLOGISTS Wege@moiher cam <br /> APRIL--JUNE 1998 <br /> QUARTERLY GR O UND WA TER MONITORING REPORT <br /> FOR SANCHEZ PROPER TY, 1876 COUNTR Y CL UB BL VD , STOCKTON, CA <br /> SEPTEMBER 10, 1998 <br /> PURPOSE AND SCOPE <br /> The following report documents the Second Quatter 1998 collection and certified labolatoty <br /> analysis of groundwater samples fiom five monitoting wells located at 1876 Country Club Blvd , <br /> Stockton CA <br /> SITE LOCATION AND DESCRIPTION <br /> The site addicss is 1876 Country Club Blvd , Stockton, CA It is located at the southeast coiner of <br /> the interscUion of Mission Street and Country Club Blvd (Figure 1) The property is located in <br /> piolected Scc.tion 4, TIN, R6E of the MDB&M at approximately five feet above mean sea level <br /> File piopeity pievrously contained two 1000 gallon gasoline Underground Stoi age 3anks (UST's), <br /> product dispenscis, and associated underground piping (Figure 3) The UST's dispensers, and <br /> piping were iemoved fiom the site in 1989 <br /> I17e piopcity owncl has installed five mon toling wells in the course of investigating the soil and <br /> gioundt,vatei conditions at the site <br /> LOCAL. GEOLOGY AND 14YDROGEOLOGY <br /> The site is ,located oil surface soils belonging to the Stockton Adobe Clay and I-loncycut Clay <br /> seiies `They are derived fiom Recent alluvial fan and floodplain deposits f lic 26 feet of explored <br /> section con,,isted of clay and silt overlying interbedded lenses of silty and ulaycy sands below 20 <br /> feet ' <br /> 1 he gi orindwater in the vicinity of the site is unconfined Groundwater elevation at the site vai ies <br /> floor a wet year high of 7 feet bgs to about 35-40 feet bgs during the previous drought period <br /> Groundwater flow direction at t11e site has generally been to the northeast <br /> QUARTERLY GROUNDWATER MONITORING, JUNE 2, 1998 <br /> WEGE and Lawrence Tank Testing (LTT) personnel collected quarterly groundwater samples <br /> from the five monitor wells at the site on June 2, 1998 See Appendix A for QA/QC, details, <br /> methods, procedures, abbreviations, and actonyms used in sampling and analysis <br /> . y <br /> l Sancho QM 6-98 <br />