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I31 August 2000 <br /> AGE Project No 96-0232 <br /> IPage 7 of 25 <br />' 08, 09 and 19 May 2000- Eighteen soil borings (P18 through P35)were advanced on-site to <br /> depths of 20 feet bsg utilizing push point technology to better assess fuel components-impact <br /> to soil and ground water in and near the fuel dispenser area, the storm drain area and the <br />' existing UST system at the site Soil data collected from P20, P21, P22, P23, P27, P29, P31 <br /> and P32 were incorporated into cross section A A'and B-B'depicted in Figures 3 and 4 The <br /> most significant MTBE-impact to soil and ground water was encountered in the southern <br /> dispenser area, the southwestern storm-drain area and around the UST pit A report of <br /> findings (Quarterly Report - Second Quarter 2000, dated 19 July 2000) documenting <br /> investigation activities performed in May 2000 was prepared by AGE and submitted to the <br />' PHS-EHD and the RWQCB <br /> • 02 through 15 May 2000- Six multi-level ground water monitoring wells (MW-8, MW-9, <br />' MW-10, MW-11, MW-12 and MW-13) were installed on and off-site to maximum depths <br /> of 150 feet bsg Laboratory analysis of initial multi-level well ground water samples detected <br /> MTBE in two samples collected from the First Zone, two samples from the Second Zone, <br /> I one sample from the Rocky's Upper Zone and one sample from the Primary Aquifer Zone, <br /> the greatest concentrations of MTBE were detected from the First Zone (MW-13A) as high <br /> as 2,500µg/1 TPH-g was detected in one sample collected from the First Zone, one sample <br /> from the second zone and two samples from the Primary Aquifer Zone, the greatest TPH-g <br /> concentrations were detected from the First Zone(MW-13A)as high as 130µg/1 TPH-d was <br /> detected in two samples collected in the Fust Zone, four samples from the Second Zone, one <br /> sample from the Rocky's Upper Zone, four samples from the Secondary Aquifer Zone and <br /> three samples from the Primary Aquifer Zone, the greatest TPH-d concentrations were <br /> detected from the Secondary Aquifer Zone(MW-13C) at concentrations as high as 940µg/1 <br />' BTEX compounds were detected in two samples collected from the First Zone at <br /> concentrations as high as 33 µg/l (MW-12A) TAME was detected in one sample collected <br />' in the First Zone at a concentration of 87,ug/l(MW-13A) ETBE was detected in one sample <br /> collected from the Secondary Aquifer Zone at a concentration of 2 5 µg/l (MW-11D) TBA <br /> was detected in one sample collected from the First Zone, one sample from the Rocky's <br />' Upper Zone and one sample from the Primary Aquifer Zone,the greatest TBA concentrations' <br /> were detected in the First Zone at a concentration of 24µg/1 Ethanol was detected in two <br /> samples collected from the First Zone, six samples collected from the Second Zone, two <br />' samples collected from the Rocky's Upper Zone, six samples from the Secondary Aquifer <br /> Zone and five samples collected from the Pnmary Aquifer Zone, the greatest ethanol <br /> concentrations were detected in the Primary Aquifer Zone at a concentration of 1,200,000 <br />' µg/1 A report of findings (Quarterly Report - Second Quarter 2000, dated 19 July 2000) <br /> documenting investigation activities performed in May 2000 was prepared by AGE and <br /> submitted to the PHS-EHD and the RWQCB <br />' 26 May 2000 - Monthly ground water samples were collected from wells MW-1 through <br /> MW-13 General ground water flow direction was towards the west-southwest at a general <br /> gradient of 0 002 Laboratory analysis of ground water samples detected MTBE in eleven <br /> Advanced GeoEnvironmental,Inc. <br />