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1 <br /> IIt does not appear that the former Wheel Country/Service Station has impacted the 541 Site <br /> based on the low levels of contaminants encountered in TR-20 and TR-21, however it is <br /> unknown whether the former Shell Station (7-11 Store)has impacted the site <br /> I7.0 LIMITATIONS <br /> The soil and groundwater grab data and related information presented in this report depict <br /> subsurface conditions only at the specific locations and time indicated Soil and groundwater <br /> conditions at other locations may vary significantly from conditions occurring at the soil boring <br /> ' locations Treadwell & Rollo, Inc makes no guarantees or warranties with respect to the <br /> accuracy or completeness of this information Opinions presented herein apply to Site conditions <br /> existing at the time of our assessment, and cannot necessarily be taken to apply to Site changes <br /> or conditions of which we are not aware and have not had the opportunity to evaluate <br /> 8.0 REFERENCES <br /> ' Advanced GeoEnvironrnental Inc , 2000 Phase II Environmental Assessment, Grantline Auto <br /> Center, 541 West Grantline Road, Tracy California 22 September <br /> Aqua Science Engineers (ASE), 1998 Report of Soil and Groundwater Assessment, Former <br /> ' Scotties #1 Service Station, 574 West Grant Line Road, Tracy, California 16 April <br /> ASE, 2000 Report ofAdditional Soil and Groundwater Assessment, Singh's Unocal Service <br /> Station (Fon-ner Scotties), 574 West Grant Line Road, Tracy, California I O November <br /> ASE, 2002 Report of Ozone Sparging System Installation and 1St Month Operation, Singh's <br /> Unocal Service Station(Former Scotties), 574 West Grant Line Road, Tracy, California <br /> 14 October <br /> Field Investigation Report 18 8 December 2003 <br /> TREADWELL &ROLLO,INC <br />