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QwkNo 121 CCI Pt No 12118-2 i TABLE 3(Cont) 712812003 - Summary of Groundwater Data During Operation of Treatment System - Quik Stop No 121 -1196 W Louise Avenue,Manteca,CA Ozone') OLssolved Well Date oxygen pH Cond Temp TPHg MTBE Acetone Fromaldehyde Injected Sampled revels(uglL) (umhoslcm) (C) uglL ug1L uglL ug/L gm/day MW-10 713112002 NIA N/A NIA NIA NIA NIA N/A(2) 8/16/2002 777 77 472 192 1 1 <50 1 <0 5 NIA 812912002 651 78 475 180 <50 <0 5 NIA 1018/2002 646 65 475 193 <50 <0 5 N/A N/A NIA 119/2003 738 76 311 161 <50 <0 5 NIA NIA NIA 4/1012003 678 77 571 178 <50 <0 5 NIA NIA NIA 7114/2003 428 74 568 207 <50 <0 5 N/A NIA NIA MW-111 713112002 543 NIA NIA 233 NIA N/A 0 8116/2002 666 70 726 186 <50 <0 5 412 8/2912002 750 70 831 178 <50 <0 5 412 10!812002 710 69 798 185 <50 <0 5 N/A NIA 412 119/2003 753 70 382 167 <50 <0 5 NIA NIA 412 4/1012003 614 70 731 172 <50 <0 5 NIA NIA 412 7/14/2003 655 73 808 190 <50 <0 5 N/A NIA 412 MW-12 7/3112002 NIA NIA NIA NIA NIA NIA N/A(3) 8/16/2002 465 NIA NIA NIA NIA NIA NIA 8/2912002 532 70 956 184 <50 <0 5 NIA 10/8/2002 381 68 1284 148 <50 05 <50 <50 NIA 11912003 625 69 395 142 <50 <0 5 NIA NIA NIA 4/1012003 534 71 680 172 <50 <0 5 N/A NIA NIA 7/14/2003 N/A N/A NIA NIA <50 <0 5 N/A NIA NIA RW-1 7/31/2002 292 NIA NIA 235 NIA NIA 0 8/16/2002 560 71 1170 220 130,000 160,000 412 8/2912002 512 71 1195 197 94,000 150,000 412 10/812002 529 72 1032 218 52,000 89,000 <50 <50 412 1/912003 548 71 360 184 13,000 21,000 NIA NIA 412 4/10/2003 535 75 790 206 9,100 15,000 NIA N/A 412 7/1412003 329 74 719 219 3,900 5,200 NIA N/A 412 --L I + NIA Not Applicable 1 Total run time per well 7 minutes x 18 cycles per day= 126 minutes=2 06 hrs per day x 6 grams per hour 2 13-aquifer well 3 Well located off-site, not influenced by C-spare remediation system Page 3 • Compliance C1 Closure, In