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r mm Mao r m r r r TABLE I HISTORICAL GROUND WATER ANALYTICAL TESTING RESULTS 5400 and 5606 Pacific Avenue,Stockton,California concentration in pg/L Sample H) I D'1 W I fPH G BEN7FNE I see BB n BLrCVL 12 DCA EB I IPB I NITBE NAP11T I n PB TOLUENE I 1,2,4-TMB 1,3,5-TNID !MLJ Ethanal DELTA COLLEGt WELL 05/21/97 1 110 26 NA NA NA 3 k NA <5 0 NA NA 092 NA NA 66 NA NA 06/24/98 <50 <10 <10 <10 <20 <10 —<I0 —<2 D —<]0 <10 <16 <]0 130 <30 NA NA 09115!98 130 26 NA NA NA 4 4 NA ND NA NA 2 5 NA NA 80 NA NA 12/22/98 <50 <10 <10 <10 <10 <10 <10 <2 0 <]0 <1 D <1 0 <t D <3 0 <2 0 NA NA 03/18/99 <50 <0 50 NA NA NA <0 50 NA NA NA NA <050-- NA NA <0 50 NA NA 06/17/99 <50 17 3 NA NA NA 2 7 NA NA NA NA <1 0 <10 <3 0 313 NA NA 09/16/99 270 564 NA NA NA 938 NA NA NA NA 6 4 NA NA 15 0 NA NA 12113!99 <SD <1 ll <l 0 <l 0 <l 0 <10 <10 <2 0 <10 —<10 <1 0 <l 0 <1 0 <2 0 NA NA 06/15/00 138 8 4 <l 0 <l 0 VAPOR EXTRACTION WELLS VEW-213 03/18/98 37811 81800 6040 <100 <100 <140 3020 149 <200 842 460 13800 2990 820 15290 NA NA 06/24/98 1599 65000 3670_ <100 <100 <200 1840 <100 <200 447 144 13400 2450 633 15230 NA NA 09116!98 3893 712W 2600 <100 <100 I <100 2990 152 <200 598 359 7730 3250 819 15060 NA NA 12/22/98 3341 43700 2610 <100 <100 <100 1420 <100 <200 560 169 6060 2420 603 10870 NA NA 03/18/99 3118 31000 3040 <100 <100 <100 913 <100 <200 210 106 3080 1470 373 7230 NA NA 06!18/99 3432 25000 2070 <100 <100 <100 1860 108 7200 818 208 4640 2610 670 12830 NA NA Not accessible due to the presence of remediation equipment VEW 3 03/18/98 1 3803 96000 3630 <100 185 <100 4190 146 <200 722 526 21700 3570 97822390 NA NA 06/24/98 3590 132000 4260 <100 784 <200 6210 330 <200 997 1150 20600 8870 2650 33790 NA NA 09/16/98 3877 119000 1900 <100 <100 <100 4220 —<i-0-0 <200 338 <]00 25900 3840 1160 23570 NA NA 12/22198 33 52 87200 4330 <100 <100 <100 3830 <100 <200 902 319 --1—66-00 2900 751 24450 NA NA 03/18/99 3122 150000 3540 <100 <100 <100 4330 193 <200 1230 712 14900 5250 1510 23840 NA NA 06/18/99 34 10 46600 2240 <100 <100 <100 4340 <100 <200 1550 434 15200 3890 1000 24600 NA NA Not accessible due to the presence of remediation equipment VEW-4 03/18!98 3900 22900 3050 <50 1 <54 —<5 0 1220 65 c100 390 19U 465 3230 420 2907 NA NA 06!24198 3568 9200 1180 <10 <14 <50 173 13 —<2 0 18 14 79 367 181 738 NA NA 49/16198 3852 7110 315 170 --- <1 0 12/22/98 334E 4240 271 150 <10 q0 81 ll <20 30 14 42 118 94 208 NA NA 03/18/99 3109 5160 326 28 <1 0 <1 0 129 7 3 <2 0 280 125 249 136 614 539 NA NA 06118!99 3383 2350 400 <1 0 <10 <10 81 97 1 <2 0 18 2 8 4 149 124 53 2 433 NA NA Not accessible due to the resence of remediation equipment VEW-5 03/18/98 1755 13100 2800_ <50 —<5 0 <50 1130 60 <100 110 160 210 500 180 1000 NA NA h 09/16/98 35.)7 28800 1830 <SD <50 U00 L360 60 <100 123 135 36]0 1080 325 4760 NA NA 09/16/98 38 47 10300 6G8 f k 1 50 1 44 9 729 48 3 <2 0 41 8 89 S 36 B 6i 1 283 1076 NA NA 12/22/98 33 13 16000 1870 <10 <10 <10 1190 79 <20 184 213 85 876 327 1424 NA NA 03118!99 3086 14800 1590 <10 <10 <10 982 49 <20 175 125 422 562 213 1839 NA NA 06!18199 33 75 7480 859 <10 <l0 — Not accessible due to the resence of remediation equipment 1232 ANALYTICAL DATA Page 26 of 27 ENVIRONMENTAL AUDIT,INC