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r <br /> CAMBRIA <br /> HYDROCARBON DISTRIBUTION IN SOIL <br /> No TPHg, BTEX, or fuel oxygenates (including MTBE) were detected in soil samples collected <br /> from well borings SVE-I through SVE-3 <br /> The soil chemical analytical data are summarized in Table 2 and TPHg, benzene, and MTBE <br /> results are presented on Figure 2 Laboratory analytical reports are included in Appendix C <br /> SOIL VAPOR EXTRACTION PILOT TEST OVERVIEW <br /> The objective of SVE at the subject site is to remove residual petroleum hydrocarbons and fuel <br /> oxygenates from soil near the USTs Cambria performed SVE from vapor extraction wells <br /> SVE-1, SVE-2, and SVE-3 from October 7 through 11, 2003 <br /> SVE Equipment A Solleco trailer-mounted liquid-ring pump with electric catalytic oxidizer <br /> (Solleco unit) was used as the extraction and vapor treatment device during the SVE test A 150- <br /> kilowatt generator powered the Solleco unit A recirculation valve controlled the applied <br /> . vacuum and vapor extraction flow rate The Solleco unit is equipped with auto-dilution and <br /> manual dilution valves for additional vacuum and flow control, as well as to maintain oxidizer <br /> temperatures within the specified range <br /> Field vapor concentrations were measured with a Horiba HEXA J-series organic vapor analyzer, <br /> calibrated to iso-butylene Vapor samples were collected in one-liter tedlar bags using a Thomas <br /> Industries vacuum pump Vacuum induced at the wellhead and in nearby wells was monitored <br /> using Magnehelic differential pressure gauges A TSI model 8330 air velocity meter was used to <br /> measure vapor extraction velocity rates and temperature <br /> Data Collection and Sampling Wells SVE-1, SVE-2, and SVE-3 were gauged prior to <br /> beginning SVE, and were all observed to be dry Throughout the SVE test, Cambria measured <br /> the applied vacuum, airflow, volatile organic vapor concentration, and vacuum influence in <br /> nearby wells at 15- to 60-minute intervals Samples of extracted soil vapor were collected at the <br /> end of each step test and toward the beginning, at one or more midpoints, and at the end of each <br /> of the longer SVE tests on wells SVE-1, SVE-2, and SVE-3 <br /> Analyses All vapor samples were analyzed for TPHg, BTEX, and fuel oxygenates by EPA <br /> Method 8260B <br /> • <br /> 0955 6 <br />