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Table A-2 Dual Phase Extractlon System-Soil Vapor Emission Data ARCO 4932 16 East Harding Way,Stockton,California TPH as Gasoline Benzene MtBE Effluent System Effluent System Effluent System Hour Meter Blower Total System Concen Emission Influent Destruction Concen- Emission Influent Destruction Concen- Emission Influent Destruction Is System Sample Date Reading Vacuum Flow Rate tration Rate Rate Efficiency tration Rate Rate Efficiency tration Rate Rate Efficiency In Compliance ID Sampled hours ("Hg) (scfm) (ppmv) (lbs/day) (lbs/da (percent) my lbs/day) (Lbs/da ) (percent) (ppmv) (lbs/day) (lbslday) (percent) with AQMD -- 05/14/03 a 10 — 0 0 NA -- 0 0 NA — 0 0 NA Yes [EFF FF 05/29/03 b,c 252 13 2775 49 054 8109 100% 011 0 010 7 629 100% 040 0 039 94 967 1009° Yes FF 07/08/03 d 26 0 20 3249 4 5 0 59 778 8 100% 0 080 0 008 7 593 100% 023 0 026 186 580 100% Yes 08/07/03 3987 10 2840 80 0 91 3903 100% <0 032 0001 1 426 100% <0 11 0006 14 221 100% Yes FF 09/09/03 fg 1,0208 15 2723 <2 8 031 3782 100% <0 032 0001 0561 100% <0 11 0005 3546 100% Yes FF 10/23/03 g 2,0558 13 2659 <2 8 030 485 99% <016 0 007 0 744 99% <014 0 007 3 960 100% Yes EFF 11!13103 g 2.3256 15 3007 <2 8 034 621 99% <0 032 0 002 0 090 98% <0 11 0 006 0 519 99% Yes EFF 12103103 g 2,8049 15 2656 <2 8 030 293 99% <0 032 0 001 0 035 96% <0 11 0 005 0 488 99% Yes EFF 01/12/04 g 3,7435 15 2798 <2 8 031 2 3 86% <0 032 0 001 0 007 80% <0 11 0 005 0 917 99% Yes EFF 02/04/04 g 4,2744 15 2428 <2 8 027 200 99% <0 032 0 001 0 019 94% <0 11 0 005 1 092 100% Yes EFF 03/03/04 g 4,7882 15 3938 <2 8 044 280 98% <0 032 0 002 0 117 98% 016 0 011 2 971 100% Yes EFF 04105104 g 5 512 9 13 4249 <2 4 041 477 99% <0 031 0 002 0 313 99% <014 0 010 1 473 99% Yes EFF 05/25/04 g 6,1047 10 1662 <2 8 019 37 95% <0 032 0 001 0 003 76% <0 11 0 003 0 014 77% Yes EFF 06!14!04 g 6 480 8 15 2995 <2 8 034 85 96% <0 032 0 001 0 033 95% <0 11 0 006 7 111 100% Yes EFF 07113104 g 6,9387 15 2596 <2 8 029 36 92% <0 032 0 001 0 039 97% <011 0 005 0 438 99% Yes EFF 08/01/04 g 7,208 5 15 2453 <2 8 027 47 94% <0 032 0 001 0 059 98% <0 11 0 005 1 423 100% Yes EFF 09/09/04 g 7,6267 15 2699 <2 8 030 113 97% <0 032 0 001 0 073 98% <0 11 0 005 1 656 100% Yes EFF 10/04/04 9 8,0371 15 2492 <14 140 4 0 65% <016 0 006 0 021 71% <0 56 0 025 0 623 96% Yes EFF 11/01/04 g 8,5973 15 2222 <14 125 4 3 71% <0 16 0 006 0 019 71% <014 0 005 0 300 98% Yes EFF 12/13/04 g 9,6033 15 2365 <24 023 4 9 95% <0 031 0 001 0 047 98% <014 0 006 0 084 93% Yes EFF 01/05/05 g 10,0766 15 2292 <14 0 128 51 75% <0 16 0 006 0 049 88% <0 56 0 023 0 065 65% Yes EFF 02/09/05 g 10,9169 15 2240 <14 0 1 26 34 63% <0 16 0 006 0 024 76% <0 56 0 022 0 115 81% Yes EFF 03/15/05 g 11,2255 18 2184 <14 0 122 33 62% <016 0 005 0 024 77% <0 56 0 022 0 110 80% Yes EFF 04/14/05 11,7800 15 1898 — -- _ _ Definitions Notes scfm =Standard cubic feet per minute a System start-up and shakedown TPH =Total petroleum hydrocarbons b Source test for San Joaquin Valley Unified Air Pollution Control District performed MtBE =Methyl tertiary-butyl ether c Analyte values given were analyzed beyond the recommended holding time The analysis was ppmv =Parts per million by volume peformed because the original analysis detected an analyte in the associated blank as well as in the =Data not available sample NA=Not applicable d Permananent system start up "Hg =Inches of mercury f SVE system restarted AQMD =Air Quality Management District g Destruction efficiency cannot be accurately calculated due to results below the detection limits lbs =pounds I 118P ARC05493250&WOW Tables\ARCO 4932 O&M Tables 1005 xis Page 1&11 �01= M M M