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1 <br />' 04 October 2000 <br /> . AGE-NC Project No 97-0290 <br />' Page 3 of 9 <br />' 24 LABORATORY ANALYSES OF SOIL SAMPLES <br /> Selected soil samples were analyzed for <br />' Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 Modified and <br />' Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> and methyl tertiary butyl ether (MTBE) in accordance with EPA Method 8020 <br /> I <br /> 25 SOIL-VAPOR EXTRACTION SYSTEM INSTALLATION <br />' On 13 March 2000, a King, Buck/Hasstech (KBH) thermal oxidation soil-vapor extraction unit <br /> (SVE) was delivered to the site by AGE Beginning on 09 March 2000, setup of the extraction <br />' network system was initiated with installation of the electrical power source and the natural gas line <br /> The SVE network was installed connecting wells VW-1 through VW-6 and the SVE unit using <br />' 2-inch diameter schedule 40 PVC piping and 2-inch gate valves to control flow from individual <br /> wells The piping was placed above ground <br />' A three-inch network manifold was constructed and connected to the SVE unit An in-line Dwyer <br /> 300 flow meter was installed in the three-inch influent line into the SVE unit This meter Is <br />' monitored monthly to calculated the influent rate The three-Inch piping was then routed through a <br /> moisture knockout vessel to a 5-horsepower, maximum 100 standard cubic feet per minute (scfm) <br /> blower and into the thermal oxidizer furnace An additional in-line flow meter is located at the flame <br /> arrester within the SVE to measure the total quantity of vapor processed through the SVE system <br />' 26 SVE START-UP <br /> The KBH thermal SVE system began operation on 19 April 2000 The initiation of the SVE <br /> I operation was observed on 19 June 2000 by representatives of the San Joaquin Unified Air Pollution <br /> Control District (APCD) <br /> Measurement of the SVE flow, vacuum (potential), concentrations of the extracted soil-vapor and <br /> collection of a set of soil-vapor samples were observed by the APCD personnel The samples were <br /> collected to document baseline concentrations of hydrocarbon vapor in the soil-vapor extracted by <br /> the SVE network and to determine the SVE hydrocarbon destruction rate <br /> Advanced CeoEnvironmental,Inc <br />