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Soil Vapor Extraction Pilot Test Report - April 2006 FLAME MINI-MART ' 1301 West Kettleman Lane, Lodi, California r 1.0. INTRODUCTION At the request of Mr Pete Graff gna of Flame Minx-Mart,Advanced GeoEnvironmental,Inc (AGE) has prepared this report for 1301 West Kettleman Lane,Lodi,California(site) The report documents an 8-hour soil vapor extraction(SVE)pilot test performed at the site in April 2006 The site and the surrounding area are illustrated on Figure 1 Structure, boring and well locations are illustrated on Figure 2 ' The purposes of the 8-hour SVE pilot test were to (1) evaluate SVE technology as a remedial alternative for this the site, (2) evaluate soil-vapor concentrations (3) determine an effective SVE radius of influence, and (4) determine most appropriate SVE equipment design This report is prepared in accordance with guidelines established by the California Regional Water Quality Control Board-Central Valley Division for investigation of underground storage tank(UST) ' sites A summary of previous investigations at the site was included in Quarterly Report-Second Quarter 2005 dated 25 August, prepared by AGE �• 2.0 SOIL VAPOR EXTRACTION(SVE) PILOT TEST I On 16 April 2006, an 8-hour SVE pilot test was conducted at the site using vapor well VW-1 (screened 30 feet to 50 feet)as the extraction well The pilot test was performed to provide SVE data prior to installation of an interim remediation system The test was conducted utilizing a 2'/2- horsepower, regenerative vacuum blower manufactured by Fuji, according to the manufacturer specifications, the vacuum blower under standard conditions was capable of producing a nominal capacity of 150 standard cubic feet per minute (SCFM) The inlet of the vacuum blower was connected to the well-head at VW-I utilizing 2-inch diameter PVC piping The outlet of the vacuum blower was attached to two 400 pound, vapor-phase activated carbon adsorption canisters All field work procedures and reporting requirements are in accordance with guidelines issued by the Central Valley Region of the Regional Water Quality Control Board (CVRWQCB) for subsurface investigation of underground storage tank (UST) system sites 2 1 SVE PILOT TEST PROCEDURES The pilot test was initiated at 9 00 AM (0900) and continued for approximately 8 hours till 5 PM ' (1700), at which time the test was terminated due to stabilization and adequate data collection Utilizing the above referenced Fuji vacuum blower,an induced vacuum potential was applied at the . well-head of vapor well VW-1 Thereafter,the vacuum-induced pressure reduction was monitored ' Advanced GeoEnvironmental,Inc