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NN t J M M Jr Montgo and Auto Service Center Former Unoca!Branded Service Station 4098 Stockton,CA EAI Project No 1232 TABLE 2 GROUND WATER ANALYTICAL TESTING RESULTS Page 3 of 19 concentration In pg/L Sample ID I DTW TPS-G I BENZENE N-BUTYL 1,2-DCA I EB IPB 1 MTBE I NAPA"[ N-PB I TOLUENE 1,2,4-TMB I' 1,3,5-TMB ' XYLENES 031181_99 T 3106 15000 1580 l <100_ _<100 <100 <100 <200 <100 <100 469 943 256 4430 06/17/99 3563 _ 3060 T- - 131 I-- <10 --<10 - <10 _<10 <20 <10 iI <10 <10 465 I S$_ 2617 09/16/99 3738---. 1980 I 4 4 - _<1 0 <1 0 363 <1 0 <2 0 _<_1 0 f <1 0 85 --- 91 7 912 _ �—332 --- 12/13/99 3283 38100 5000 - <100 - <l00 652 i <100 <200 665 1 <100 - 4050 2110 -508 6750 - L06/15/00 - 3624 3zlM 12- <10 _ - <10 <10 I <I0 <20 <10 <10 - <10 <10 81-_� _848_` ---- -- 02/08/95 4928 i 100000 15000 - NA t 480 1 2500-' NA j NA r NA NA 20000 I NA NA -'-- 12000 - - 1 - — -- _-- -- - -1-_ __ --- 10b/21/95 50 54 _ 1_30000 17000 i NA 400 2600 NA NA NA I N_A 21000 _ NA NAS( 1200_0_ r9/19/95 53 10- { 84000 13000 NA - 390 2000 NA NA N I - J � _ _ � _ _ A _ _NA � 16000 _ _NA NA 12/19/95 4657 86000 13000 NA 270 2000 I� NA NA NA NA 17000 NA� I NA - _ 9000 _ 0311 1/96 4301 86000 1 15000 -- NA I 200 I 1900 j NA <5000 NA ; NA 18000 NA i NA 9500 106/19/96 4553 90000 t 16000 -I 14 AL 200 2200 NA <6000 NA NA_ 22000 NA NA-� 12000 09/17/96 48 48 - 95000 I 11000 I NA 120 2600 1 NA <3000 NA NA 1 21000 NA NA - - -]2000 1I _ -I- - - - - - — - A - i 12/0 /96 43 14 32000 I 5700 NA 1 39 980 t NA <2000 NA NA I 7600 NA NA 4600 1 03/24/97 4057 34000 f 5800 I NA I 1 { 1000 NA <600 I NA NA 1 4300 NA NA _4200 06I!8/97 _ 43 16 82400 75 l0 � NA ' 50 - 1560 NA I <Z fl0 NA NA I 1 ]000 NA NA 6950 E09/16/97 4486 76200 7760 !I �NA <5 2100 NA <400 NA NA I 13900 NA NA - -- 9400 12/10/97 40 26 123200 4060 NA i <50 666 I NA <400 NA NA 3060 NA NA - 3220 03/18/98 1 3616 20500 4050 <100 <100 695 <100 i <200 221 <100 3090 636 176 - 3330 I 0612419835 97 58400 6390 <100 <200 1740 i <100 i <200 I 289 163 I 9270 1210 297 7830 I 09/16/98 3900 36300 1 5330 <100 <100 1030 I <100 E <200 203 <100 53$(} 923 229 _5770 112/22/98 3243 1 15000 2560 <100 <100 210 <100 I <200 178 i <100 1310 548 148_ 24_93 031]8199 1 30 46 1 10300 1920 <100 <100 ---<100 <100 �' <200 <100 <100 1040 I 315 <300 - - 2045 106/17/99 3479 14000 4090_ <100 <100 <100 <100 <200 i 140 <100 1800 343 136 --- --3400 09/16/99 1 3651 17100 4]80 <100 <100 369 <100 <200 <]00 <]00 - - -- -- _I --- -_- 1 3480 + 473 182 1 4050 12/13/99 I 32 17 35)00 1890 { <100 <100 <100 <100 1 <200 526 <100 1 2580 1930 505 �- 12_420 06/15/00 3489 274 97 ---- <1 0 i <1 0 <] 0 <1 0 <2 0 ' <1 0 <1 0 i <1 0 <1 0 <1 0-- <2 0 - - -�_ -- 1232 ANALYTIC Al-DA rA ENVIRONMENTAL AUDIT,INC