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GROUNDWATER ASSESSMENT REPORT <br /> TABLE 1. <br /> RESULTS OF SOIL SAMPLES <br /> COLLECTED BY GROUND ZERO ANALYSIS, APRIL 7, 2000 <br /> (micrograms per kilogram ug/kg or equivalently,parts per billion) <br /> sample Identificatioa <br /> DTU-SP-A1/A2 <br /> Constituent DTU-T1N43' DTU-TIS-13' (composite) DTU-SPB DTU-SPC - <br /> TPHg <br /> <10 <10 <10 <10 <10 <br /> Benzene <3 0 <3 0 <3 0 <3 0 <3 0 <br /> Toluene <3 0 <3 0 <3 0 <3 0 <3 0 <br /> Ethylbenzene <3 0 <3 0 <3 0 <3 0______53 0 = <br /> Xylenes 25 <3 0 <3 0 4 7 <br /> MTBE 1,60016,600 15,300/11,000 1.33/<5 89145 12,20012,600 <br /> D1PE <250 <500 <5 <10 <500 <br /> ETBE <250 <500 <5 <10 <500 <br /> TAME <250 <500 <5 <10 <500 <br /> TBA <1000 <2000 <20 480 <2000 <br /> TPHg= Total petroleum hydrocarbons as gasoline(EPA Method 8015) <br /> MTBE=Methyl tertiary butyl ether(EPA Method 8020/EPA Method 8260) <br /> DIPE=Di-isopropyl ether(EPA Method 8260) <br /> ETBE=Ethyl tertiary butyl ether(EPA Method 8260) <br /> TAME=Tertiary amyl methyl ether(EPA Method 8260) <br /> TSA=Tertiary butyl alcohol(EPA Method 8260) <br /> <1 0=concentration less than indicated laboratory reporting lunit <br /> SOIL AND GROUNDWATER ASSESSMENT, JULY 2000 <br /> Based on the reported soil concentrations detected during the UST removal,SJCEHD requested <br /> that UOP conduct an investigation to determine the lateral and vertical extent of MTBE in the soil <br /> and groundwater UOP contracted ESA to prepare a work plan and conduct the required <br /> assessment UOP received work plan approval from Ms Carol Oz (SJCEHD) on June 19, 2000 <br /> The full report of this investigation was submitted to the SJCEHD and is entitled Subsurface Soil <br /> and Groundwater Assessment Report, University of the Pacific, 1081 West Mendocino Avenue, <br /> dated August 25, 2000 <br /> As required by the work plan, ESA completed five soil borings on July 5, 2000 at the former UST <br /> -location as-shown-on-Figure-4- Soil-boring TP-1-was placed-in the center of the foriner -- - - - -_- <br /> excavation to assess soil and groundwater conditions beneath previously excavated areas ESA <br /> - placed TP-2 through TP=5 approximately 15 feet from TP-1 along the previous-excavation - 1 <br /> perimeter TP-4 and TP-5 assessed soils and groundwater conditions at either ends of the former <br /> UST Soil borings TP-2 and TP-3 were drilled on the east and west sides of the former UST <br /> excavation to determine whether impact from MTBE had migrated laterally beyond the limits of <br /> the excavation <br /> Groundwater Assessment Report 6 ESA 1200252 <br /> September 2003 <br />