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I <br /> Y <br /> TABLE 4b <br /> GROUNDWATER TREATMENT SYSTEM DATA <br /> Thrifty Oil Station#172, 7647 Pacific Ave,Stockton CA <br /> Discharge TotaUCum Average INLET u !L a U T L E T u L <br /> Totalizer Discharge TRPH I LEL <br /> DATE Reading Discharge Flow TPHg B T E X MTBE B T E X MTBE pH COMMENTS <br /> (gallons) (gallons) a11da (8015K (8021) (8021) (8021) (8021 (8021) ( 181L) (8Q21} (6021} (8021) (8021) (8021] (1 501) (sensor)(field}r <br /> 419103 10 93114 - - 129 Restarted GW system with new water meter starting at 10 <br /> allons <br /> 4110/03 730 93 834 720 148 000 323.00 31 800 2 260 8 420 1 890 <05 <0 04 <0 02 <0 02 <0 06 <0 03 898 0 80 ?Aso collected annual samples <br /> 4117/03 1 340 94 444 87 - - - - - - 090 <br /> 4124103 1 49D 94 594 21 - 070 <br /> 511103 1 530 94 634 6 <br /> _ _ Q80 Checked for clogs and cleaned pump water Imes <br /> 5/8103 2 730 95 834 171 060 <br /> 5115103 2920, 96 024 27 080 <br /> 5120/03 3 711 96 815 158 <br /> 1 DO shut down system irn QWS <br /> 5121/03 3 711 96 B15 0 - 1 QQ Restarted <br /> Shut down for nrhal calibrabon reports for LEL&flow as <br /> 5122103 3 792 96 896 81 7 230 524 531 20 258 8 810 <05 <0 04 <0 02 <0 02 <0 06 <0 03 879 1 00 requned by the City of Stockton kept system off for carbon <br /> change <br /> 6!20103 3 792 96 896 0 _ Restarted system(carbon change on 6118103) <br /> 6126103 4 352 97 456 93 120 <br /> 713103 5 478 98 582 161 - - - - - - 100 <br /> 717103 5 434 99 53B 239 39 500 6 170 5 360 234 1 880 13 800 <0 5 <0 04 <0 02 <0 02 <0 06 <0 03 888 1 00 pH number was read n the field usng Hydac 910 Digdal <br /> tester <br /> 719103 6 869 99 973 218 - - - - 100 <br /> 7117!0 1 6 649 101 753 223 500 807 11 244 58 97 J 1 0 <0 04 <0 02 <0 02 <0 05 <0 03 865 1 20 pH number was read n the veld usng Hydac 910 Digdal <br /> tester <br /> 7124103 9 341 102 445 99 - - - 1 00 <br /> 7130103 9 732 102 836 65 Q 80 Shut dorm Gw system for carbon change <br /> 818103 9 825 102 929 —200 Restarted (from 32 to 9 525 gal saakmg B drammg of <br /> new carbon wain freshwater <br /> 8114103 11 081 104 185 209 <br /> - - - 230 <br /> 8118/03 11 263 104 367 46 <br /> - - - - 230 Shut gown system for 4ws <br /> 8121/03 11 263 104 367 0 220 Restarted <br /> 8127103 11 978 105 082 119 87 100 16 600 12 100 404 6 490 42 700 <0 5 <0 04 14 <0 02 <0 06 <0 03 652 230 <br /> 915103 12806 105 910 92 - - - - - <br /> - - 240 Shut down system for carbon change <br /> 9111103 12 890 105 994 - - - System stdl off ;from 12 896 to 12$90 pal soakng& <br /> - - 1 00 dranmg of new carbon wan fresh water) <br /> 9118103 12 890 105 994 1 50 system shll off <br /> 9124103 10 - 59 700 1 90 12 1 <0 2 <0 6 16 300 <0 5 <0 04 <0 02 <0 02 099 -003 656 1 BO Restarted Replaced water meter starting at 10 pall <br /> 9125103 430 106 414 420 - - - 2 36 Found system off pump broken dorm restarted <br /> 1012103 7 180 113 164 964 238 <br /> 1019103 7 970 113 954 113 3 85 Shut down system for carbon change <br /> 26 Restarted{from 7 970 to 5 420 gal soakng&drawing of <br /> 1 <br /> 10I151D3 8420 114404 75 new carbon with freshwater) <br /> 14/16103 8 650 114 634 230 22 400 4 500 4 920 193 2040 `461/152 <0 5 <0 04 <0 02 <0 02 <0 06 <0 03 56 1 86 <br /> 10/23103 9 930 115 914 183 1 20 <br /> 10/30103 1 12 870 118 854 420 2 08 <br /> 1115103 20 160 126 144 1 215 236 <br /> 11112103 22 430 128 414 324 263 Shut down system for carbon change <br /> Restarted(from 22430 to 23280 gal soa kngd drammg of <br /> 11!19103 23 280 129 264 121 1 80 new carbon wdh fresh water) <br /> 11120103 23 390 129 374 110 118—00 0 2 850 1 B 900 2 600 17 700 297il 691 <0 5 <0 04 D 97 <Q 02 <Q 06 <0 03 767 1 38 <br /> 172TA84 GW System Page 1 of 3 121712004 <br />