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a. } <br /> Fir-MM5-11 <br /> MM <br /> { rlARTEItIN NIOM OR1Nr 1?r:rt►t?'r rltiyt unit7t:rt cit r9i�t <br /> Tracy 11"'evard Shell <br /> 3725'rcv+cy liosdevard,•Tracy-Cari[„ntia <br /> Shell No.203-7884.09x1 <br /> 1)ert;i Project No.40-89.012 <br /> Page 2 <br /> 2.1 Previous WYork <br /> - round information and .cork- conducted to date at the project site arc discussed in the folla��'tng <br /> Ba g <br /> reports: <br /> a Proposed Work Plat for Pretatk Clos[ire Site Assessment,Delta,June 19, 19' <br /> ovember 2. <br /> 89- <br /> o Pretarl;CIOs[fre Site/Issessntcttt,D'lta,fDcitaZNa9ember 2S, 1990• <br /> a Prclittlirlary Report oral Turek Closure Report, 1991. <br /> �Iottitoring Report, Fa <br /> o eiJLrancrly� urtlt Q+caner of 1990, Delta,February 7, <br /> 22 M0-001in+`Fells <br /> �wcrc drilled and installed around the perimeter of the site o <br /> Monitoring wells MW 1,MSV 2,and 1vl�V-- <br /> de depth of 22 feel. These wells were abandoned and replaced v"t"'menttotont a aban[lotted svclwloG tions <br /> a P <br /> M, W-3A on August 16, 1990- The new <br /> wells .+ere install- J <br /> (Figure 2). <br /> 3.0 12P.SIJ1,,,S or 1NVI,S'IIGATIOPI ACYIVIDES <br /> 3.7.Ground mWater F7eyati0n Data g W_2A, and MW-3A on February <br /> r at round water elevation data collected <br /> Depths to ground ware[V1CIe measured. <br /> are summarized in Table 1 MUsing ground <br /> 26, 1991. Ground water elevations <br /> during the February 26, <br /> 1991,sampling event,a ground water contour map was prep.red and is of <br /> tf <br /> in Figure 3. The ground water flow direction was [awards the northu•cSt at a hydra <br /> gradient <br /> approximately 0.006. <br /> 3.2 Grotto[)Winter Analytical Results from manitorin,�„wells MW-IA,MW-2A,and <br /> Ground.vat:.r samples <br /> were collected on February 26, 1991, toluene, <br /> MW-3A and were submitted to a C lifornia-certified laboratory for analysis of benzene, <br /> gTg t end total petroleumhgdrocarbons(TPH)- Chemical aralySis resulEswcre <br /> ethylbenzene,and xylenes( ),` gasoline'all below laboratory method detection limits for l3TFX and TPH as g.t <br /> water analytical results for samples collected through February 26,1991,are summarized in Table 2. <br /> Ground Ground water samples will be collected in <br /> rc orts.are...pr ,ented to Appcndir A -- - <br /> Ccxtined laboratory _ <br /> - May 1991 for chemical analysis of I3TFX and TPH as gasoline. - - - <br />