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TABLE 2 ANALYTICAL TESTING RESULTS Montgomery Ward Auto Service Center Former Unocal Branded Service Station#5098 Stockton,California I parts per billion Page 14 of 15 Sample ID DTW TPH-G BENZENE N-BUTYL 1,2-DCA EB IPB AiTBE NAPHT N-PB TOLUENE 1,2,4-'f MB 1,3,5-TMB XYLENES 06/24/98 NM NS NS NS NS NS N5 NS NS NS NS NS NS NS 09/15/98 40 58 <50 <0 50 NA NA <0 50 NA <5 0 NA NA <050_ NA NA <10 12/22/98 _ 3221 <50 <0 50 NA NAT <0 501 NA 40 NA NA 11 NA NA 21 03/18/99 3047 <50 <0 50 NA NA <0 50 NA NA NA NA <0 50 NA NA <0 50 � MW-18 -- — 03/18/99 3U 49 <50 --<-050 NA NA <0 50 NA NA NA NA <050 NA NA <0 50 MW-19D 03/18/99 3034 14000 620 NA NA 750 NA NA NA NA 1000 NA NA 1900 MW-19S 03/18/99 3052 710 34 NA NA 3 2 NA NA NA NA 41 NA NA 71 DELTA COLLEGE WELL 06/24/98 <50 i <10 <10 <20 <10 <10 <20 <10 <10 <10 <10 <30 <30 12/22/98 _<50 <1 0 <1 0 <1 0 <1 0 <1 0 <2 0 <1 0 <10 <1 0 _ <10 <3 0 <2 0 03/18/99 <50 <0 50 NA NA <0 50 NA NA NA NA <0 50 NA NA <0 50 NOTES Only compounds which were detected are shown on this table (I ) Samples taken on 12-19-95 were analyzed outside of their holding time An additional compound, 1,2-Dichloropropane was detected in Montgomery Ward well MW-1 (5 3 ppb)sampled on 12-06-94� An additional compound, 1,2-Dicliloropropane was detected in Montgomery Ward well MW-1 (1 3 ppb)sampled on 02-08-95 - An additional compound, 1,2-Dichloropropane was detected in Montgomery Ward wells MW-I (1 6 ppb)and MW-4(1 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 Methylene chloride is interpreted to be the result of laboratory contamination L I I1 _ _ An additional compound,chloroform was detected in Montgomery Ward wells MW-1 (3 7 ppb), MW-5 (3 0 ppb),and MW-6 (13 ppb)sampled on 03-11-96 I i Project No 1232 ENVIRONMENTAL AUDIT, INC A