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Mr John Benedict Project No 880-039 1A . October 18, 2002 Page 4 ' Sampling Results On July 1, August 5, and September 5, 2002, vapor samples were collected from treatments stem influent Treatment reatrnent system effluent samples were also collected on those dates Samples were submitted to a state-certified laboratory for analysis of TPH-g and BTEX using USEPA Methods 8015 and 8020 TPH-g and benzene were only reported in the influent sample collected in the August 5, 2002, event at concentrations of 2,900 and 0.89 milligrams per cubic meter(mg/m3), respectively. TPH-g or benzene were not detected in the effluent samples Laboratory analytical reports and chain-of-custody documentation are presented in Appendix D System Performance Status The treatment system was pulsed during the third quarter 2002 In the 112 days between June 11, 2002 and September 30, 2002, the treatment system rani approximately 82 days (73 percent operational), removing 132 pounds of TPH-g System TPH-g emissions were maintained below 0 08 pounds per day, which is well below the allowable TPH-g emission rate of 6 1 pounds per day TPH-g destruction efficiency was maintained above 99 percent, and benzene destruction efficiency was maintained at 100 percent The burn chamber temperature ranged from 737°F to 757°F, well above the minimum ' required burn temperature of 600°F System performance data, field data sheets, and calculations are presented in Appendix D First Quarter 2002 System Performance Summary Pounds TPN-g removed since startup 3,063 Pounds TPH-g removed during this reporting period 132 TPH-g daily removal rate during reporting period(pounds per day) 161 ' TPH-g destruction efficiency(%) 98 3 to 100 TPH-g emission rate to atmosphere(pounds per day) <0 08 ' Pounds benzene removed since startup 45 Pounds benzene removed during this reporting period 02 N\sacDP120021PRI1P38188M800391A 2ag doc Shaw Environmental and Infrastructure, Inc (01050000)