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i <br /> 1 Mr Terry Tarditt <br /> • April 5, 2005 <br /> 1 Page 2 <br /> 1 Beginning remediation and mass removal will be the focus of activities in 2005, <br /> along with required quarterly groundwater monitoring <br /> 1 GROUNDWATER SAMPLE REQUIREMENTS <br /> iBC's Workplan for Quarterly Sampling of Monitoring Wells explains that each site <br /> monitoring well will be sampled and water levels will be measured quarterly In <br /> addition, the water supply well,located to the north of the tire shop,has been <br /> added to the quarterly sampling program. A report summarizing these activities is <br /> due to PHS/EHD the month following the end of the previous quarter. Samples <br /> are required to be analyzed for the following constituents total petroleum <br />' hydrocarbons as gasoline (I'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 /> iDichloroethane (1,2-DCA) and 1,2-Dibromoethane (EDB) analysis <br /> i, GROUNDWATER DISPOSAL <br /> Purge water from this sampling event was placed into drums and disposed of <br /> iproperly by T&T Trucking, Inc <br /> QUARTERLY RESULTS SUMMARY <br /> Historical groundwater elevation data is summarized in Table 1 Table 2 <br />' <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 /> March 2005 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 />' Tins report unr papond nr aanrdana Garb 1&tua ff&ofthr esrareutmenlal mrunittsg rsdnst y at the Am At mat pnpord 7t shark!sot he <br /> almd"by parses odher than!hare for o6w u;was prrparr4 and I&x arly to the exam of the sc*e of sak wdrah aas aaahmrtrd Thu <br /> npat doer notgw=tee that tra addrUo=1 ernmmamental aantmntnad+es beyond that d wOud m AM rrpas ousts at Abe sste. <br /> P•\27000\127960 T&T Tmd=mg\Reports\1st-O5gtr doc <br />