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0674IN _h 110 <br /> f U <br />"7cn�„ � `�`3,^ +•-..., � .',�,•,.�w F ;, ` a v+�•s .>.'�'71�..�..�, ..:r�r-ys,;.,,. Y y� .� _ r�+�, <br /> a.,. ,�� -_ .moi`e��•� �.-,�-..i: xv, :yay. ti,-y:,-.k' �3' �,',;=�:s " .k' _ <br /> s <br /> . <br /> A <br /> Delta <br /> Environmental <br /> Consul$snte,Inc. <br /> 3300 Data Drive,S9RO 1(10 <br /> Rancho Cordova.CA 95670 <br /> 91663$•2085 <br /> FAX:9161638-8385 <br /> . n+ <br /> OL <br /> hl kk{� <br /> May ,29 1991 <br /> Ms.Linda'Turkatte <br /> Department of EnvironmeH H h Services <br /> ealth <br /> San Joaquin County PdOlic <br /> P.O.Box 2009 <br /> Stockton,California 95201 <br /> Subject: Quarterly Ground Water Sampling <br /> tockton,CRes nig <br /> ults <br /> 620 West Charter Way, <br /> Shell V_N- o•204-7524-4305 <br /> Delta Project No.40-88-586 <br /> Dear Ms.Turkatte: an to conduct an <br /> Delta Environmental Consultants, Inc., has been authorized by Shell C'il Company <br /> intended to characterize the <br /> investigation of soil and ground'�es conditions <br /> 2)at a Shell serviVe <br /> investigation tis r en,,ion ed at 629 West Chaster <br /> This <br /> Way, Stockton, California, (Figures <br /> distribution of petroe. <br /> ,cum constituents in soil and Bound w'at lubeactivitieseatperfocrmed at the nt to the t site on <br /> letter report summarizes the results of ground wester same gQuarterly ground water <br /> 1991,along with site activities Performed in March and April 1991. Q Y Sr W-8 and <br /> April 26, g 1 MW-3,1`5W-5,MW-6,MIN-7,Ad product <br /> samples were collected from existing monitorizi wells and � hese floating p <br /> MW-9 identified in Fig-are 2. h1onitot:ng wells MW-2 and h� 4 procedures Contained described <br /> and were not sampled. All field activities were followeal using procedures described in Enclosure A. <br /> Water T,evel De th flow Dim-110n F€vdranitc Gradlert► round water monitoring wells <br /> Groundwater level rneasurernents werelrecorded on April <br /> l26,19ong i 1.1 Qr�aund water level measurements <br /> IviWt through out t and are sof i lot of thlsa lsrorrcal datea ma e!y (Figure <br /> 5 feet within <br /> recorded throughout the duration a€:his investigation. A p <br /> a general decline in water elevations over the past Ir drrppng by l?P well <br /> the wells since December 1959,with the ations n monitoring.tion of�ellsrMW levels and MW5 re lat{ve tomeasured in ghe h�W ai <br /> The plot shows une•_2ected e.ev <br /> trend for these wells. <br /> i <br />