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STable 1 - Summary of V&hemical Analytical Data • <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> I <br /> I <br /> Wellhead Influent Sample Results Effluent Sample Results <br /> Date TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes MtBE TPH TPHg Benzene Benzene Toluene Ethylbenzene Xylenes <br /> (mg/m) (PPmv) (mg/m3) (PPmv) (mg/m) (mg/m') (mg/m3) (mg/m3) (mg/m, (PPmv) (mg/'3) (PPmv) (mg/m3) (mg/m3) (mg/m3) <br /> F <br /> 1830 219 <10 <0 3 <10 5 53 NA <10 <3 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 7 System restarted7 850 224 <50 <1 4 <5 0 6 4 88 NA <10 <3 <0 l0 <0 03 <0 1Q <0 10 <0 1Q <br /> 8 1,300 343 <5 0 <1 4 <50 77 110 NA <10 <3 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 02-27-98 1,900 501 <2 5 <07 3 8 18 95 NA <10 <3 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 03-25-98 450 119 <1 0 <0 3 <1 0 3 7 50 NA 15 4 <0 10 <0 03 <0 10 <0 10 0 21 <br /> 04-20-98 850 224 <05 <0 1 <05 3 5 67 NA 44 12 <0 10 <0 03 <0 10 <0 10 0 67 <br /> 05-27-98 480 127 <05 <0 1 <0 5 1 5 25 NA 64 17 <0 10 <0 03 <0 10 <0 10 0 18 <br /> 06-30-98 170 45 <0 1 <0 03 <0 1 19 6 3 NA 45 12 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 07-30-98 720 190 <10 <0 3 <10 44 14 NA 48 13 <0 10 <Q 03 <0 10 <0 t0 <0 10 <br /> 08-27-98 270 71 <0 50 <0 1 <05 <05 3 7 NA 47 12 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 09-30-98 220 58 14 04 7 5 20 11 NA 110 29 25 0 7 10 12 5 8 <br /> 10-22-98 390 103 [10 <03 <10 <10 50 NA <10 <3 <0 10 <0 03 0 18 <0 10 020 <br /> 11-03-98 System shut down due to tow influent concentrations <br /> 11-18-98 760 200 0 63 02 84 <0 50 0 92 NA 100 26 <0 10 <0 03 <0 10 <0 10 0 19 <br /> 11-20-98 200 53 <0 10 <0 03 026 0 22 2 6 NA 22 6 <0 10 <0 03 <0 10 <0 10 <0 t0 <br /> 11-20-98 System shut down due to low influent concentrations <br /> 12-31-98 760 200 22 6 3 20 0 51 27 NA 12 3 <0 050 <0 01 <0 050 <0 050 <0 050 <br /> 01-04-99 91 24 14 0 4 <0 25 <0 25 0 82 NA 26 7 0 057 002 0 061 <0 050 0 15 <br /> 01-04-99 System shut down due to low influent concentrations <br /> 01-27-99 500 132 13 3 7 14 <0 25 14 NA 19 5 <0 050 <0 01 <0 050 <0 050 <0 050 <br /> 02-01-99 280 74 <0 50 <0 14 <0 50 <0 50 2 5 NA 47 12 <0 10 <0 03 <0 10 <0 10 0 25 <br /> 02-01-99 System shut down due to low influent concentrations <br /> 02-24-99 510 134 24 6 9 1 6 <0 50 24 NA 18 5 <0 050 <0 01 <0 050 <0 050 <0 050 <br /> 03-01-99 110 29 0 81 0 23 <0 05 <0 05 14 NA 53 14 0 054 002 <0 50 <0 50 022 <br /> 03-01-99 System shut down due to low influent concentrations <br /> 03-22-99 920 243 11 3 2 0 54 0 73 5 1 NA z --- 3 --- --'z -- 2 --_i <br /> 03-26-99 24 9 66 0 104 0 030 0 106 0 190 0 220 NA ---3 --_3 --_3 ----3 --_-3 ---3 ---3 <br /> 03-26-99 System shut down due to low influent concentrations <br /> 04-20-99 1,600 422 29 8 3 22 0 74 38 NA 95 25 0 17 005 0 064 <0 050 0 13 <br /> 04-23-99 140 37 025 007 <0 050 <0 050 099 NA 40 11 0 068 0 020 <0 0500 <0 050 0 13 <br /> 04-23-99 System shut down due to low influent concentrations <br /> For Explanation refer to page 3 <br /> Stockton,to 6981 140124 04 <br />