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r rr 1110, In ■r Mo ery Ward Auto Service Center For notal Branded Service Station#5098 Stockton,CA EAI Project No 1232 TABLE 2 GROUND WATER ANALYTICAL TESTING RESULTS Page 18 of 19 concentration to µg/L Sample ID ry DTW TPU-G BENZENE N-BU FYI, 1,2-DCA EB IPB NITBE NAPHT N-PB TOl UENE! 1,2,4-TAIB 11,3,5-TMB XYLENES E DELTA COLLEGE WELL 05/21/97 I - 110 _26 NA - ' _NA 3^1 NA I <5 0 i NA I NA _ 092 ' NA NA 66 06/24/98 I i <50 <10 I <10 - <20 1 <10 <10 <-0 <10 <10 - <10 - <10 - <30 <30 09/15/98 I 130 28 NA NA i 4 4 NA ND NA NA 2 5 NA NA_ $ 0 12/22/98 v0 <1 0 <1 0 - <1 0 0L3118/99 - <50 <0 50 � -NA NA <0 50 _NA NA NA NA_ I <0 50 NA NA <0 50 06/17/99 <50 { 17 3 N NA_ A _ __ _ _ - 27 NA NA NA NA <1 0 - <1 0 <3 0 3 3 09/1b/99 270 56 4 NA NA 9 38 NA NA NA i NA 64 NA NA 150 12/13/99 <50 <1 0 <1 p <1 0 <! 0 <1 DT <2 0 <10 I < < < <1 0 _ 1 0 10 1 0 <2 006/15/00 138 8 4 <1 0 <1 0 5 5 <1 0 <2 0 <1 0 <1 0 <1 0-- -- <1 0 - -- _ _ _ _ _ _ _ 5 6 DOTES Only compounds which were detected are shown on this table (I )Samples taken on 12-19-95 were analyzed outside of then holding time An additional compound, 1,2-Drclnloropropane was detected in Montgomery Ward well MW-1 (5 3 ppb)sampled on 12-06-94 An additional compound, 1,2-Dichloropropane was detected in Montgomeiy Ward well MW-I (1 3 ppb)sampled on 02-08-95 An additional compound, 1,2-Dtchloropropane was detected in Montgomery Ward wells MW-I (1 6 ppb)and MW-4 (l 3 ppb) sampled on 06-21-95 Methylene chloride was also detected in wells MW-3 (4 8 ppb)and MW-4(2 4 ppb), respectively MethylenL chloride is interpreted to be the result of laboratory contamination An additional colnpotrnd,chloiofornn was detected In Montgomery Ward wells MW-1 (3 7 ppb), MW-5 (3 0 ppb), and MW-6 (1 3 ppb)sampled on 03-11-96 An additional c.ompotnnd, 1,24)tchloiopropane(1 2 ppb)was detected in Montgomery Waid well MW-1 sampled on 06-19-96 An additional c ompound, chloroform was detected in Montgomery Ward well MW-1 (2 6 ppb)on 12-05-96 An additional compound, chloroform was detected in Montgomery Ward wells MW-1 (1 6 ppb)and MW-5 (1 2 ppb)on 12-10-97 An additional compound, 1,2-L)ichloropropane was detected in Montgomeiy Ward wells MW-1 (1 2 ppb) and VEW-5 (3 4 ppb)sampled on 09-16-98 An additional compound, P-lsopropyltoluene was detected In Montgomery Ward��ells MW-I (l 5 ppb), VEW-4(8 4 ppb) and VEW--) t6 2 ppb)sampled on 09-16-98 An additional compound, SEC Butylbenzene was detected in Montgomery Ward wells VEW-4(17 0 ppb) and VEW-5 (11 1 ppb) sampled on 09-16-98 1232 ANAL1 I ICAI_-DA CA .ENVIRONAILNT IL AUDIT, INC