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T 1 <br /> Ground water samples collected from Well MW-8, located in the southwestern corner of <br /> the site, contained TPPH at a concentration of 76,000 ppb and benzene at 800 ppb MTBE <br /> was not detected in ground water from MW-8, at a detection limit of<1250 ppb While <br /> MW-8 is located adjacent to the existing UST complex, concentrations of benzene and <br /> MTBE relative to TPPH concentrations do not suggest a recent release from these tanks <br /> Well MW-5, which has comparable TPPH concentrations, contains benzene levels an order <br /> of magnitude greater, and MTBE levels at least three orders of magnitude greater <br /> The three newly-installed wells will be added to the quarterly monitoring and sampling <br /> program already established at this site <br /> To delineate the extent of petroleum hydrocarbons identified in Well MW-8, one additional <br /> ground water monitoring well is proposed to the southwest of Well MW-8, in the location <br /> shown on Plate 4 Procedures followed for installation of this well will conform to the <br /> procedures described in the work plan for this investigation <br /> If you have any questions regarding the contents of this document, please call <br /> Sincerely, <br />• Enviros, Inc <br /> ?^U,-Y <br /> Joe W Neely <br /> Projec GeologistoQRgFESSleyq� <br /> �` L U�Yp cry <br /> v � � <br /> Diane M Lundquxs , P E <br /> Senior Engineer NO 046725 <br /> C46725 °rF oil c <br /> • <br /> 371 5 <br />