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Mr Terry Tarditi <br /> November 2, 2004 <br /> Page 2 <br /> added to theY sampling lin program A report summarizing these activities is <br /> 9 P gP g P g <br /> due to PHS/EHD the month following the end of the previous quarter Samples <br /> are requited to be analyzed for the following constituents total petroleum <br /> hydrocarbons as gasoline (T'PH-g) by Environmental Protection Agency (EPA) <br /> method 8015 Modified,benzene, toluene, ethylbenzene, and xylene (BTEC, and <br /> oxygenates by EPA method 8260B PHS/EHD has also required 1,2- <br />' Dichloroethane (1,2-DCA) and 1,2-Dibromoethane (EDB) analysis <br /> iGROUNDWATER DISPOSAL <br />' Purge water from this sampling event was placed into drums and disposed of <br /> properly by T&T Trucking, Inc <br /> QUARTERLY RESULTS SUMMARY <br /> Historical groundwater elevation data is summarized in Table 1 Table 2 <br /> summarizes groundwater flow direction and gradient Table 3 summarizes the <br /> historical analytical results for petroleum hydrocarbon constituents Figure 2 <br />' presents a groundwater elevation contour map for the second quarter Analytical <br /> results are presented for each well on Figure 3 A methyl-tertiary-butyl ether <br /> (MtBE) isoconcentration map is presented in Figure 4 Field data sheets from the <br /> June 2004 quarterly groundwater sampling event are included as Attachment A <br />' Laboratory reports for the groundwater samples collected for these sampling <br /> events are included as Attachment B <br /> Analytical laboratory Kiff Analytical, Inc, <br /> Davis,California <br /> (California Department of <br /> Toxic Substances Control <br /> Certification No 2336) <br /> Sample exceptions None <br /> Shallow groundwater gradient (3rd qtr) 0 001 <br /> Shallow groundwater flow direction (3rd qtr/4d'qtr) Northwest <br /> Average depth-to-water (2nd qtr) 75 70 feet <br /> Average change in shallow groundwater <br /> elevation from 2nd qtr to 3rd qtr -3 83 feet <br />' 7 his mparl uw(pmparrd rn aawdamr urlh tin rlundards n/!fx enrrrrinmrnlul mnrulhng rndu+lry at 11m time a uurpreparrd It rlwuld nn1 be <br /> mhed upon b)parlrrr ollxr 11wrr 11nisr for ulnm 71 uwr prrparrd and llxn ono 10 1he of I&anpe of nvrk almh weir am1horr,-rd 7/.Ys <br /> rrporY da r uol fnuranlre 11ml no uddrlrnnal rnrrrnrrmrula!rrnlunnuulran Inj nrd!1w!deanHrd rn lhrr rrpod evils a!ll,e rile <br />' P\21(X)[1\21417 1n 1\Reports\3rd-04ytr doc <br />