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Mr John Benedict Project No 880-039 1A <br /> Page 4 <br /> • � <br /> May 8, 2002 <br /> i <br /> Sampling Results <br /> P 9 <br />' On January 14, February 4, and March 11, 2002, vapor samples were collected from <br /> treatment system influent and effluent Samples were submitted to a state-certified <br />' laboratory for analysis of TPH-g and BTEX using USEPA Methods 8015 and <br /> 8020, respectively TPH-g was detected in the January and March 2002 influent samples <br /> at 44 and 1,149 milligrams per cubic meter (mg/m3), respectively Benzene was detected <br /> in the January 2002 influent samples at 0 089 mg/m3 Benzene was not detected to the <br /> March 2002 influent TPH-g and Benzene was non-detectable in the February 2002 <br /> influent samples <br /> TPH-g and benzene were non-detectable in the January, February, and March 2002 <br />' effluent samples Laboratory analytical reports and chain-of-custody documentation are <br /> presented in Appendix D <br /> System Performance Status <br /> The treatment system operated approximately 63 days (75 percent operational) during the <br /> first quarter 2002, removing 478 pounds of TPH-g since system start-up System TPH-g <br /> emissions were maintained below 0 14 pounds per day, which is well below the allowable <br /> TPH-g emission rate of 6 1 pounds per day TPH-g destruction efficiency was maintained <br /> above 95 percent, and benzene destruction efficiency was maintained at 100 percent The <br /> burn chamber temperature ranged from 754°F to 781°F, well above the minimum required <br /> burn temperature of 600°F System performance data, field data sheets, and calculations <br /> are presented in Appendix D <br /> First Quarter 2002 System Performance Summary <br /> Pounds TPH-g removed since startup 2,917 <br /> Pounds TPH-g removed during this reporting period 376 <br /> TPH-g daily removal rate during reporting period (pounds per day) 1 08 <br /> N1sacDP120021PRJIPJ8188018800391A tad doc <br />