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stabilize,which is interpreted to be aquifer water entering the casing. The sample will be carefully collected <br /> with a clean bailer and poured into the appropriate laboratory prepared container with minimum cavitation. <br /> Each water sample will be labeled, logged onto a chain-of-custody form, and placed in a chilled ice chest. <br /> Upon completion of well sampling,each well will be closed and locked. <br /> Chemical Analysis <br /> Up to six(6)soil and six (6)groundwater samples will be analyzed at a State certified analytical laboratory <br /> from the exploratory borings. At the minimum, these samples will be tested for the following; Total <br /> Petroleum Hydrocarbons as Gasoline(TPHG),Benzene(B),Toluene(T),Ethylbenzene (E) and Xylene (X), <br /> and Methyl-tert-butyl-ether and fuel oxygenates using EPA-Methods 3510/8015, 8020 and 8260. The <br /> analyses will be run on an"normal"turnaround(five working days). Upon completion of the.groundwater <br /> monitoring wells,three(3)groundwater samples will be collected and analyzed for the same contaminants <br /> using EPA Methods 3510/8015, 8020 and 8260. Should records review identify other potential <br /> contaminants from off-site sources, additional laboratory analyses will -be performed to ascertain the <br /> presence"of off-site contaminant sources. <br /> Report <br /> A Environmental Site Investigation Report will be prepared for submittal to the City of Tracy, which <br /> would be forwarded to the PHS EHD. The report will include the field methods, permits, exploratory <br /> boring logs, monitoring well construction details, chemical analytical data and report narrative of site <br /> hydrogeology and contaminant distribution, and conclusions and recommendations for further work if <br /> needed. <br /> If you have any questions, please call. <br /> Sincerely, D <br /> Wright Environmental Services, Inc. <br /> QZ N21262 <br /> CERTIFIED <br /> ENGINEERING <br /> v' <br /> John Lynch Christopher M. Palmer GEOLOGIST <br /> President HG 246, CEG 1262 <br /> OF C <br /> Attachments: Figure 1. Location Map <br /> Figure 2. 1966 Oblique Aerial View of Tracy Corporation Yard Area <br /> Figure 3. Soil Sampling Locations,Tank and Dispenser Removal. <br /> Figure 4. Corporation Yard Map Showing Tank's and Dispensers Locations <br /> Page 3 <br />