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1 <br /> I <br /> Working To Restore Nature <br /> a locking, water-tight well plug was installed on each well and a water-tight, locking wellbox <br /> labeled "monitoring well" was concreted over each well <br /> I <br /> After installation, the wellheads were surveyed vertically and horizontally to a common datum <br /> and tied to the existing wells Depth-to-water readings were utilized to calculate the <br /> groundwater flow direction beneath the project site <br /> After the monitoring wells were installed the wells were monitored for free product and were <br /> developed in accordance with accepted industry standards Water samples were collected with <br /> a teflon bailer after purging a minimum of three casing and sand pack volumes Samples were <br /> collected in glass containers, preserved, sealed, labeled and transported on ice in an air tight <br /> cooler The samples were analyzed by Sequoia Analytical laboratory for BTEX (EPA method <br /> 8020) and TPHg (EPA method 503018015) <br /> RESULTS OF THE INVESTIGATION <br /> The wells were completed at 75 feet below grade No evidence of contamination was detected <br /> by either physical means (olfactory or visual evidence) or with the FID <br /> Soil Lithology <br /> The soil lithology in the vicinity of wells MW4 and MW5 consist of interbedded lenses of lean <br /> to fat clay and silt with minor intrusions of sand to a depth of approximately 44 feet below <br /> Igrade From approximately 44 feet to 62 feet poorly graded sand with silt and clay <br /> predominates From approximately 62 to 75 feet the lithology is pnmanly clay and silt Well <br /> ' logs are presented in Appendix I - <br /> I <br /> 150041%MF"RTSISR-0694 FM. O <br /> 1 <br />