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Ta 2 Soil Vapor Extracti]Wtem Emission Data • ARCO Service Station#2093 3425 Tracy Boulevard,Tracy,California TPH as Gasoline @enzene Effluent Effluent Hour Meter Blower Average Concen- Emission Destruction Concen- Emission Destruction Is System Sample Date Reading Vacuum Flow Rate tration Rate Efficiency trabon Rate Efficiency In Compliance ID Sampled (hours) ("H20) (scfm) (ppmv) (Ibslday) (percent) (ppmv) (lbs/day) (percent) with AQMD EFFL 12/15/95 4,014 11 100 -- -- _ EFFL 01/04/96 4,538 11 95 34 1 3 977% — — — Yes EFFL 01/26/96 4,765 50 95 47 18 949% -- — - Yes EFFL 02/26/96 4,776 45 75 25 08 965% — — Yes EFFL 03/27/96 5,231 44 75 25 08 965% — -- — Yes EFFL 04/15/96 5 380 44 74 4 01 994% — -- -- Yes EFFL 05/02/96 5,631 44 76 4 01 994% - - -- Yes EFFL 05/15/96 5,819 47 60 13 03 977% -- — -- Yes EFFL 06/03/96 5,856 45 63 1 00 998% -- — -- Yes EFFL 06/21/96 5,982 34 70 8 02 985% -- — Yes EFFL 07/10/96 6,039 30 65 11 03 982% — — Yes EFFL 08/12/96 6,219 16 68 81 22 91 9% — - — No EFFL 09/16/96 6,265 14 80 15 05 979% — — — Yes EFFL 10/08/96 6,760 25 60 4 01 992% — — -- Yes EFFL 11/05/96 6 954 35 60 0 00 1000% — — Yes EFFL 12/20/96 7,387 32 63 2 00 969% — — Yes EFFL 01/13/97 7,390 28 60 0 00 1000% -- — Yes EFFL 06/18/97 7,566 68 45 1 00 997% Yes EFFL 07/24/97 7,587 48 50 4 01 984% — Yes EFFL 08/28/97 7,588 45 60 0 00 1000% — — -- Yes EFFL 09/10/97 7,607 45 55 8 02 963% — -- — Yes EFFL 10/15/97 7,630 30 60 9 02 957% — -- - Yes EFFL 11/17197 7,654 30 60 7 02 961% — — — Yes EFFL 12/31/97 7,847 40 65 10 02 947% — — -- Yes EFFL 05/28/98 7,847 60 40 10 02 998% 005 0 001 997% Yes EFFL 06/11/98 8 143 50 105 10 04 985% 0 000 — Yes EFFL 07/08/98 8,444 -- -- — -- — Yes EFFL 10/12/98 8 444 50 65 27 01 996% 000 0 000 100% Yes EFFL 11/09/98 8 499 50 29 32 00 998% ND 0 000 -- Yes EFFL 12/21/98 8,690 40 29 145 02 586% ND 0 000 - Yes scfm =Standard cubic feet per minute ND =Not detected ppmv =Parts per million by volume a =Prior to April 1998 data was collected and reported by Brown and Caldwell lbs =Pounds b =TPH-g and benzene concentrations reported as ND are taken as 0 ppmv — =Not applicable or not analyzed for calculation purposes 7G600-026-01/4QO&M Tables xls/TABLE 2 March 8 1999