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FP.tJt'1 <br />FH". 110. !71`+c:1t-t`_~i° HFr. __ 2tJ 13 ~J_:_UPPI F'-l <br />liascd on the 'IPH ruults for thz Da;entber satnplts, another 119 cubic yards oY soils wzn: excavated from <br />the site and vatuponed to tfie landfill. Following this excavation, fine additional test pits were du, within <br />the excavated aria and down gradient of the sits. DCA 1 end iX:A 4 were dug near and slightly down <br />;lope from the dispensing station in soils located beneath the excaVa[td area DCA 2, DCA3, and llC.4 5 <br />were located 20 to 60 feet down slope from the dispensing sratian to define nc~ lateral extent of <br />contamination. These piLi were dug to a depth of five to seven feet. The floor oY pits DCA 1 and DCA 3 <br />were approxlmatcly I S fee[ hziow original gradz of the dispensing station. Sample results arc presented in <br />Table ~. Nunc of the ;amplrs exceeded the OIS TPIl thrzshold level of 500 moJkg, and no additional <br />analysis for BETX or PAH's was requzstcd. <br />Table 4 Analysis of Sam lea Collected January 14.2003 <br />Lab Number Sample ID Location/Depth TYH, mg/l:g <br />J1587 DCA-J Wall Dispensing Station West 20' SW 431 <br />11588 DCA-1 Floor <1 <br />J1589 DCA-2 Wall South SW Dispensing Station 35' <i <br />J 1590 DCA-2 Floor -a <br />JZ591 DCA-3 Will South Center 3S <i <br />.il i92 DCA-3 Floor <1 <br />11593 llC'A-4 Wall Dispensing Station East l4' SW 116 <br />J1594 DCA-4 Floor 119 <br />J1595 DCA-S Wall 65'SouthCenterofDispensingStation =1 <br />JI29G DCA-S Floor 7G <br />Following receipt of the January 14 sample analysis, another 60 cube: yards of soil was removed from the <br />areas represrnted by samples DCA-1 surd DCA. PPM rctttrrtcd to Sattthfield February 13 to resampk <br />this ana. Fits llCS-6 and DCS-7 wire excavated in races coincident with DCA-1 and DCA-4. Again <br />x-paste bulk samples were collected front the sidewalls and flour of cash pit. <br />Tabic 5 Sample Results from February 13, 2003 <br />Lab Number Sample Ill Location/Depth TPFI, mg/kg <br />JlidIA DCS-(ia DispeusingStation West-PitSidewall. ND <br />31342n DCS-6b Dispensing Station Wcst-Pit Floor ND <br />J1343A DCS-7a llispcnsing Station East-Pit Sidewall 38 <br />J1344A DCS-1b DispznsinzStationEast-Pit Floor 4 <br />Reporting Limit (ND=No Detect) 1 <br />Total PcYrolrum llydrocacbons were below the detection lmtit at the west pit and wtl{ below [he actlottable <br />level (SOOntg/k~ a[ the cast yit. <br />Site Characterization <br />The Soutltficld site reprzsznted an above ~ ound dicsel/petroleum stotade area that wa, in service for <br />approximately twenty years. No Iz-ekaae had lxzn observed doting regular exanthtations of the lacilitizs. <br />Highest levels of TPH were derecizd adjacent to the diesel dispeosin~ station, probably caused by <br />inadvertent spills dttrmg the fueling prorzss. <br />No water wells aze located within the expected area of impact MW-1G, amonitorin_2 well included in tlx <br />mine's N}droloo c Monitoring plan, is located approximately 1,600 feet down-dip from the sitz. This fuel] <br />Peak Project Management, LLC <br />341 t 5 County Road 20.8. Trinidad, CO 81082 <br />Ph011elFax (719) 846.4975 a-mail: ronthompson@sensonics.org <br />