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� r ' <br /> t <br /> P-2, 1-inch diameter,PVC Schedule 80,0.020 slot size, screened-25-30 feet. <br /> P-3, 1-inch diameter,PVC Schedule 80,0.020 sot size, screened-3 0-3 5 feet. <br /> SVE Test DeKdpA <br /> The equipment arrangement is shown schematically on Figure 3 - SVE Test Schematic. <br /> We anticipate the following equipment will be utilized-, A 3-horsepower or higher <br /> positive displacement blower or a regenerative blower rated for at least 50 standard cubic <br /> feet per minute(SCM at a vacuum of 8-inches mercury, one or two 200-pound vapor <br /> phase carbon vessels, differential pressure gauges indicating pressure/vacuum in inches <br /> of water,differential pressure or variable area flow meter 0-50 SCFK Tedt"bags,2- <br /> inch Schedule 40 PVC piping or 2-inch hose with quick connect coupling and appropriate <br /> wellhead fittings- The granular activated carbon will be used to control vapor phase <br /> emissions during the test. <br /> It is anticipated that the test duration will be approximately four hours(2-hour/well)- <br /> Test measurements will taken every 30 minutes or so. We will measure extraction well <br /> air flow-rate,extraction well vacuum, and baseline and test vacuum/pressure at probes P- <br /> 1 through P-3. <br /> Four extracted air samples (2 per extraction well)will be analyzed for the COCl, These <br /> vapor samples collected in TedlarO bags will be analyzed by EPA Method 8260. Grab <br /> vapor samples collected from the soil probes will be analyzed for TPH and%oxygen by <br /> handheld instruments including a photoionization detector and a LEL meter. <br /> Test Results andAeoort <br /> A report of the findings of this SVE test will be prepared for submittal to PHS EHD. The <br /> report will include the well and probe construction details, site maps and geologic cross <br /> sections. The report will describe and interpret test results including air flow-rates, well <br /> and probe vacuum, and soil gas analytical data. We will analyze the test data and <br /> develop estimates of the SVE radius of influence, initial COC removal rates, and <br /> effectiveness of SVE in the soil strata tested. We will assess the feasibility of using SVE <br /> as an interim remediation measure based on the analysis of test data and develop <br /> additional recommendations for full-scale implementation if appropriate. <br /> If you have any questions, please call the undersigned. <br /> Sincerely, <br /> Wright Environmental Services,Inc. <br /> John Lynch R. Maqbool Qedir, PE <br /> President CH 4767 <br /> Attachments:Figures i through 3 <br /> Ok <br /> gU r Go <br />