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TableO i Sail Vapor Extraction System Performance Data i Time Oil Lockeford Site 14000 E Highway 88 Lockeford,California TPH an as line Benzene FID Influent Influent j Hour Meter Ambient Blower Influent Concen Removal Net Removed Concert- Removal Net Removed Sample Date Reading Dilution Vacuum Flow Rate Influent Effluent tration Rate Removed to Date tration Rate Removed to Date ID Sampled (hours) Valve ('H20) (scfm) (ppmv) (ppmv) (ppmv) (lbs/day) (pounds) (pounds) (ppmv) (lbs/day) (pounds) (pounds) INFL 12/13/99 7,8631 a 6%0 3 154 10,000 20 6,900 00 00 Start-Up 1570 00 00 Start Up INFL 01/25/00 8 821 0 5%0 20 156 1,900 10 3,990 2492 4,9726 4,9726 330 16 321 321 INFL 02/22/00 9 208 6 10%0 20 313 1,000 5 2,460 3082 4,501 1 9,4737 338 33 397 718 INFL 03/13/00 9 378 6 15%0 10 204 1 910 1 2 960 2417 1,9478 11,421 5 270 1 7 178 89 6 INFL 04/13100 9 394 4 1%0 161 1701 2 990 5 3 810 2594 1650 11,586 5 245 1 3 1 0 90 6 INFL 05/03/00 9 823 2 4%0 121 101 7 1 490 5 2 820 1146 3,3433 14,9298 31 4 1 0 205 111 1 INFL 06/14/00 10 831 6 3%0 98 1471 795 0 5,080 2991 8,6965 23 626 3 375 1 7 572 1683 INFL. 08/09/00 10 854 1 2%0 202 131 >10,000 2 2,330 1221 1975 23 823 8 31 7 1 3 1 4 1697 INFL 09/14/00 11 5234 C 201 1879 690 0 1,120 842 2,8778 26,7016 72 04 240 1937 INFL 10/19/00 12 031 3 C 389 1897 345 0 1,260 957 1,9039 28,6055 633 0 4 844 2022 INFL 11/07/00 12 350 9 C 181 1837 298 0 895 658 1,0754 29,6809 439 0 3 4 18 2063 INFL 12/20/00 12,7742 D - - INFL 01/17/01 12,9220 C 30 1921 475 0 379 291 1,1299 30,8109 1 11 01 379 2101 INFL 02/21/01 137620 C 40 1912 293 0 10 08 6155 31,4264 NO 00 117 2113 INFL 03/14/01 13,9284 C 25 18476 475 4 430 318 1129 31,5393 22 00 00 211 3 REPORTING PERIOD 0111101 to 03/31/01 TOTAL POUNDS REMOVED 31,5393 2113 TOTAL GALLONS REMOVED 5,1704 288 PERIOD POUNDS REMOVED 1,8584 so PERIOD GALLONS REMOVED 3047 08 PERIOD AVG FLOW RATE 189 PERIOD PERCENT OPERATIONAL 75% scfm =Standard cubic feet per minute NS=Not sampled lbs =Pounds a System startup,initial air samples taken NA =Not available or not applicable = FID(flame-ionization detector)reading (Flame Out) NO =Non detectable above detecbon limit Please nota No samples were taken in July because the remediation system was down ppmv =Parts per million by volume converted from micrograms C=ditution air valve is closed per liter,assuming TPH as gasoline and benzene vapor D=System is down due to repairtmaintenance density is 0 278 and 0 217 lbs per cubic foot respectively Density of benzene=7 34 pounds per gallon TPH =Total Petroleum Hydrocarbons Density o1 gasoline=6 1 pounds per gallon 077 41737 002/1-ockeford 0&MTables x1s/TABLE A 1 March 22 2001