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TABLE 1 HISTORICAL GROUND WATER ANALYTICAL TESTING RESULTS 5400 and 5606 Pacific Avenue,Stockton,California concentration inµg/L Sample 1D DTW TPH C BENZENE I see-BB u BUTVL 1,2 DCA EB I IPB MTBE IYAPIIT n PB TOLUENE 1,2A TMB 1,3,5 TA1B XYLENES I Methanol Ethanol 1 MW 27 09!25101 3526 1 <50 <l 0 <1 0 1 <1 0 <1 0 i 12143/01 3306 <50 <l 0 I NIA NIA <l 0 <1 0 N/A <1 0 NIA NIA <1 0 , NIA NIA 1 5 NA I NA 03103/02 3166 <50 k <2 0 _1 <2 0 <2 0 ` <2 0 1 <2 0 <2 0 <1 0 <5 0 , <2 0 <2 0 <2 0 <2 0 <2 0 NA NA 06/10/02 3225 <50 <2 0 Q 0 <2 0 Q 0 <2 0 <2 0 I <1 0 I <5 0 <2 0 <2 0 <2 p —<20 <2 0 1 NA NA 09/22/02 35 40 230 V 26 <0 5 1 <0 5 <0 5 13 076 20 1 72 15 28 18 4 0 47 NA NA 12/02 _ 3474 _<50 <0 5 <0 5 c0 5 <0 5 <0 5 <0 5 <2 0 I <2 0 <0 5 c0 5 c4 5 cD 5 <0 5 NA NA t DELTA COLLEGE WELL 05/21/97 110 1 26 NA NA NA_ 3 1 NA <5 0 NA NA —092 NA NA 6 6 NA NA '06 1412 98 <50 1 <10 I <10 <10 <20 <10 <10 <20 <l0 <10 <10 <10 <30 GO NA 1 NA 09/15/98 130 28 NA NA NA 4 4 NA ND NA NA 2 5 NA NA 80 j NA NA 112122/98 _ - <50 1<0 <1 0 1 <10 <1 0 <1 0 <1 0 1 c2 Q q 0 1 <1 Q <l 0 <1 4 <3 0 <2 0NA I NA 103/18/99 <50 <0 550 1 NA NA NA <0 50 1 NANA NAT_ 106117199 <50 T 173 I NA I NA NA 27 NA NA NA NA <1 0 1 <1 0I <3 0 3 3 I NA AIA 64116/99 r _ 276 I 56 4 I NA NA NA 9 38 NA NA NA NA 6 4 NA NY 15 o NA NA 12/13/99 I <50 <1 0 <l 0 <l 0 1 <)0 1 <1 0 <l 0 _ _2 0 1 <1 0 I <1 0 <1 0 i <10 <l 0 <0 NA NA 106/19Ofl 1 138-_1 8 4- , <1 0 <10 - _ VAPOR EXTRACTION WELLS 1 VEW-2B 03/18/98 1 37 80 81800 06 40 �<1p0 <]00 <100 30' - -2U ' 149 <200 842 4b0 13$40 299U 1 820 ]5290 9A NA I f �— �__'_--.--_� -- 106/24/98 35 94 65000 I 3670 �- <l04 <100 <200 1840 <100 1 <200 447 134 , 13400 2450—16 33 15230 NA NA 09/16/98 38 93 1 71200 0 00 <100 2990-i 152 <200 598 359 7730 1 3250 819 15060 1 NA- Np 12!22!98 3341 43700 2610 <100 <100 <100 1420 1 <100 j X200 I 560 169 1 6060 2420 663 10870 NA NA 03/18/99 31 18 31000 3040 1 <100 I <100 X100 913_ <100 <200 4 2101i 66 i 3080 1474 373 _7230 I NA NA 06/18/99 ; 3432 25000 1 2070 1 <104 I <100 <100 1860 108 1 <200 818 208 4644 2610 670 r 12830 E NA NA Not accessible due to the Presence of remediation a uq �pment i VFW-3 03118/98 3803- I 96000 i 3630 <100 185 <10� __ 146 <200 ' 722 526 21700 3570 i 978 22390 NA 1 NA 06124/9 1 35 90 132000 1 4260 <100 784 <200 6210 330 <200 1 997 1150 1 220600 1 8870 2650 33790 ! NA NA '09/16/98 1 3877 119000 � 1900 <100 <100 <100 1 4220 <l00 0 338 1 <100 1 25900 -1 3840 1160 23570 _NA - NA 112122198 3352 87200 4330 <100 I <100 ~ <100 1 _3834 <100 <200 902 1 319 1 16600 12900 1 _751 20450 NA NA 103/18/99 3122 150040 1 3540 1 <]00 <]00 <100 4330 i 193 1 <200 1230 11 7._1.2 � 14900 5250 1510 2384Q NA NA 06/18/99 1 3410 1 46640 2240 <100 <100 1 <!00 43400-<100 20<fl 1550 431 4 1 15200 1 3890 1 1000 24604 NA NA No due to the presence of remedtation a ui ment - - 1 - I jVEW-4 _ 103/18/98 3800 T 22900', 3050 1 <50 465 1230 1 <50 <50 ; 1220 65 <100 390 190 _ - r - l__ ,-. _ , 420 2907 � NA NA 106(24198 3569 9200 1 1180 <10 <10 <50 173 13 <20 1 18 14 ' 79 T 367 181 1 738 NA NA 1 '09116198 3852 _7110 1 315 170 <1 0 <10 1500 334_8 <2 0 I 13 8 1 504 1 3 8 534 1 234 2727 NA i NA '12/22198 3341 4240 - 271 E 5 0 <10 <10 81 11 <20 1 30 14 1 42 1 118 1 N 208 NA NA €0311 /8 99 3]09 5160 326_�2 8 <1 0 <1 0 ]29 7 3 m <2 0 —280 l2 5 1 249 136—, 614 539 NA NA f 06/18799 33 8_ 2350 400 1 <1 0 11 <3 0 �1 <1 0 81 9 7 1� l8 2 8 4 149- -� 1 -- I----.-.— �--- -- , 124 532 , 433 _ NA Not accessible due to the presence of remediation qulpment 1232 ANALYTICAL DATA Page 23 of 25 ENVIRONMENTAL AUDIT,INC