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rSUBSURFACE 50II ANA REPORT <br /> TABLE 2 <br /> (ENTECH ANALYTICAL LABS, INC ) <br /> CONFIRMATION ANALYTICAL RESULTS (PARTS PER BILLION) <br /> 1 SAMPLE SITE MTBE DiPE ETBE TAME TERT- <br /> BUTANOL <br /> DTU-T1N-13' 6600 <250 <250 <250 <1000 <br /> DTU-T1S-13' 11000 <500 <500 <500 <2000 <br /> ' DTU-SP-A11A2 <5 <5 <5 <5 <20 <br /> (composite) <br /> DTU-SPB 45 <10 <10 <10 48d <br /> ' DTU-SPC 2600 <500 <500 <500 <2000 <br /> MTBE=Methyl tertiary butyl ether(analyzed using EPA method 8260) <br /> ' DIPE=Dnsopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=tertiary amyl methyl ether <br /> TBA=tertiary butanol <br /> <S=concentration less than indicated laboratory reporting limit <br /> Upon obtaining soil sample results following the UST removal, SJECHD requested that UOP <br /> conduct an investigation to determine the lateral and vertical extent of soil and groundwater <br /> potentially impacted by MTBE ESA submitted the Soil Investigation Workplan to the SJCEHD <br /> on June 8, 2000 for review, and UOP received workplan approval from Ms Carol Oz (SJCEHD) <br /> ' on June 19,2000 <br /> 1 <br /> ES A1200252 <br /> Subsurface Sod and Groundwater Assessment August 25,2000 <br /> ' 1o81 W Mendocino Avenue,Stockton,California 3 <br />