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Mr Tom Busenbark Project No 880-039 IA <br /> • July 9, 2003 <br /> Page 4 <br /> samples monthly in accordance with air board permit requirements, and report quarterly <br /> to the air board <br /> Sampling Results <br /> rOn April 7, May 5, and June 9, 2003, vapor samples were collected from treatment <br /> system's influent and effluent Samples were submitted to Sparger Technology (ELAP <br /> #1614) and Sierra Analytical (ELAP #2320) for analysis of TPHg and BTEX using <br /> USEPA Methods 8015 and 8020/8021 TPHg and BTEX concentrations were below the <br /> detectable limits during each sampling event Laboratory analytical reports and chain- <br /> of-custody documentation are presented in Appendix D <br /> System Performance Status <br /> The treatment system was pulsed during the second quarter 2003 In the 91 days <br /> between March 31, 2003, and June 30, 2003, the treatment system ran approximately <br /> 63 days (69 percent operationall), removing approximately three pounds of TPHg, as <br /> shown on Table 2 The system's TPHg emissions were maintained below 0 08 pounds <br /> per day, below the allowable TPHg emission rate of 6 1 pounds per day TPHg and <br /> benzene destruction efficiencies were maintained at approximately 100 percent The <br /> burn chamber temperature ranged from 758°F to 768'F, well above the rrummum <br /> required burn temperature of 600°F (Table 3) System performance data, field data <br /> sheets, and calculations are presented in Appendix D SVE well data are presented in <br /> Table 4 <br /> 1 N\sacDP120031PrJ\88W800391A 3af doc Shaw Environmental, Inc <br /> (01050000) <br />