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. Table 1 - Summary ofhemical Analytical Data , <br /> Unocal Servic ation No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> i <br /> Wellhead Influent Sample Results Effluent Sample Results <br /> Date TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes MtBE TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes <br /> (mg/m) (ppmv) (mgl n) (ppmv) (mg/m) (mg/m3) (mg/m) (mg/m3) (mg/m) (PPmv) (mg/m3) (PPmv) (mg/m) (mg/m) (mglm) <br /> 09-22-94 5,800 1,529 153 44 452 66 227 NA <11 <3 0108 <003 0152 <0109 0109 <br /> 10-07-94 4,350 1,147 132 38 493 37 118 NA <11 <3 0 108 <0 03 <0 111 <0 109 <0 109 <br /> 11-08-94 5,220 1,376 164 47 238 26 118 NA <11 <3 0108 <003 <0111 <0109 <0109 <br /> 12-11-94 4,100 1,081 57 16 320 58 220 NA 74 20 0 060 002 12 1 1 64 <br /> 01-09-95 6,100 1,609 99 28 640 120 560 NA 160 42 083 024 15 57 29 <br /> 01-22-95 System shut down for modification from thermal to catalytic mode <br /> 05-16-95 7,600 2,004 130 37 580 96 330 NA 510 134 10 287 30 29 84 <br /> 05-23-95 System shut down due to destruction efficiency less than 95% <br /> 12-19-95 1,000 264 20 6 28 3 11 NA <10 <3 <0 050 <0 01 0 11 <0 050 00089 <br /> 01-24-96 5,700 1,503 56 16 540 89 440 NA 15 4 <0 10 <0 03 <0 10 <0 10 010 <br /> 02-26-96 1,500 396 <10 <3 120 20 93 NA 58 15 <0 10 <0 03 030 <0 10 3 1 <br /> 03-26-96 1,800 475 <10 <3 150 30 150 NA 26 7 <0 10 <0 03 <0 10 <0 10 071 <br /> 04-23-96 1,600 422 <0 10 <0 03 160 38 180 NA <10 <3 <0 10 <0 03 <0 10 <0 10 059 <br /> 05-28-96 1,300 343 <20 <06 96 34 170 NA 33 9 <0 10 <0 03 <0 10 <0 10 019 <br /> 06-25-96 3,200 844 <10 <3 210 89 480 NA 16 4 <0 10 <0 03 029 010 057 <br /> 07-30-96 7,700 2,030 <10 <3 460 250 1,500 NA 62 16 0 14 004 2 1 14 98 <br /> 08-30-96 6,800 1,793 <10 <3 490 170 1,100 NA 1,400 369 <10 <0 29 67 37 270 <br /> 09-25-96 5,300 1,398 <10 <3 160 140 1,000 NA 15 4 <010 <003 013 <010 11 <br /> 10-28-96 1,900 501 <50 <1 40 45 310 NA 18 5 <0 10 <0 03 0 13 0 13 068 <br /> 11-21-96 220 58 <0 50 <0 1 76 25 11 NA 12 3 Oil 003 021 012 087 <br /> 12-20-96 1,600 422 <1 0 <0 3 29 16 76 NA 38 10 <0 10 <0 03 <0 10 0 16 10 <br /> 01-29-97 1,000 264 <50 <1 4 11 27 180 NA <10 <3 <0 10 <0 03 <0 10 <0 10 048 <br /> 02-27-97 1,500 396 <1 0 <0 3 34 32 260 NA 100 26 <0 50 014 <0 50 066 70 <br /> 03-01-97 System down due to mechanical problems <br /> 04-01-97 System startup after repair and maintenence <br /> 04-24-97 940 248 <0 50 <0 14 16 22 190 NA 56 15 <0 10 <0 03 <0 10 069 70 <br /> 05-31-97 1,800 475 <10 <03 17 34 310 NA <10 <3 <010 <003 <010 <010 080 <br /> 06-24-97 1,800 475 <50 <14 <50 28 280 NA 12 3 <0 10 <0 03 <0 10 <0 10 035 <br /> 07-31-97 800 211 <0 50 <0 1 068 21 190 NA 12 3 <0 10 <0 03 <0 10 <0 10 1 1 <br /> 08-28-97 980 258 <10 <03 <10 15 160 NA <10 <3 <0 10 <0 03 <0 10 <0 10 061 <br /> 09-28-97 1,500 396 <10 <03 <10 18 170 NA <10 <3 <010 <003 <010 <010 <010 <br /> 10-26-97 lSystem found to be down due to failure of the flame detector <br /> For Explanation refer to page 3 <br /> Stockton,to 6981 140124 04 <br />