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TABLE 1 HISTORICAL GROUND WATER ANALYTICAL TESTING RESULTS 5400 and 5606 Pacific Avenue,Stockton,California concentration in pg/L Sample 1D DIW TP11 G BENLENE I see BB n Hurl 1,2 DCA I EB I IPB I 31TIlL NAPIII n PB TULDENEt 2,4 T316 1,35-131B XYLENES [%]ethanol Ethanol 06!18/99 3383 2350 4VU <1 0 <l 0 <k 6 8l 9 7 1 <2 0 18 2 8 4 149 124 53 2 433 NA NA Not accessible due to the presence of remediation equipment VEW 5 03/t8198 3755 13100 2800 <50 <50 <50 1130 60 <100 110 160 210 500 ISO 1000 NA NA 06!24198 3557 28800 1830 <50 <% <100 1360 60 <100 123 135 3610 1080 325 4760 NA NA 09/16/98 3947 10300 668 l l 1 SU l 449 729 483 <2 0 418 89 5 36 8 611 283 1076 NA NA 12/22198 33 t3 16000 1870 <10 <10 <l0 ]190 79 720 184 213 85 876 327 1424 NA NA 03/18199 3086 14800 1590 <10 <10 <10 982 49 <20 175 125 422 562 213 1839 NA NA 06/18/99 3375 7480 859 <10 <10 <10 543 39 <20 184 87 35 688 202 1353 NA NA Not accessible due to the resence of remedtalton equipment NOTES Only compounds which were detected are shoe n on this table (I)Samples taken on 12 19 95 were analyzrd outside of their holding time 1206-94 1 2-Dlchloropropane was detected In well MW 1(5 3 pg1L) 02-08 95 1 2 Dichloropropane was detected in well MW 1(1 3 p)L) 06-21 95 12 Mchloropropane was detected in wells MW-I(1 6 pg/L)and MW 4(1 3 pg/L) Methylene chloride was detected in Hells MW 3(4 8 pg/L)and 1AW-4(2 4 pg L) 03-11 96 Chloroform was detected in welts MW 1(3 7 jig/L) MW 5(3 0 pg1L) and MW 6(1 3 pglL) 06 1996 12 Dtchforopropane was detected in well MW-1(1 2 pg/L) 1205-96 Chloroform was detected in wet l MW-1(2 6 pg/L) 12 1097 Chlorolorm was detected in wells MW 1(t 6 pg/L)and MW-5(1 2 pg/L) 09 1698 1,2 Diehlotopropane was detected in wells MW 1(1 2 pg/L)and VIEW 5(3 4 jig/L) 09 1698 p-[soprop)Itolueue was detected in welts MW-1(1 5 pg/L) VEW 4(8 4 pg!L) and VEW-5(62 pg1L) 09 1699 p lsoprop)Itoluene was detected in well M W 2(1 l jig/L) 09/19/00 Tetrar hloroethene was detected in well MW-18(1 4 pg1L) p Isopropyltoluene was detected in well MW-19D(l 1 Pg/L), Several wells contained meth)lene chloride a taboi glory contaminant 12/13/00 MethvlenL chloride a laboratory contaminant was detected in well MW 13(25 0 pg/L) Several wells contained chloroform m low concentrations The chloroform is believed to be derived from the tap water used to decontaminate the pump and hose system 09/25/01 Tetrachloroethene was detected In wells MW-27(4 1 pg/L)and MW 18(1 6 pgll) p lsopropylioiuene was detected in well MW-8D @ 45 (25 pg/kg) 09/22/02 Tertiary Butyl Alcohol was detected in wells MW 3(70 pg/L) MW 4(19 pg/L) MW 14A(5 6 pg/L),MW 25S(37 pglL) and MW 25D(3$pg/L) Chlorofomt was detected In well M W-1(3 0 pg/L)and Tetrachloroethene w as detected in wells MW 18 (0 85 pg1L) MW 21 S(0 58 pg/L) and MW 27(2 3 pg/L) 12/03/02 p Isopropyltoluene(19pgIL)and Styrene(1 5 pg/L)were detected to well MW-11 Vinyl chloride was detected In well MW-17(2 6 pg/L) Tetrachloroethene was detected to wells MW-18(0 92 pg1L) MW 23D(0 82 pg1L) AS 26(0 65 pgiL)and MW 27(4 1 jig/L) Trichloroethene was detected In well MW 27(1 8 pg/L) 02/18/03 Tetrachloroethene was detected in wells MW 18(0 75 pg/L), MW-21S(0 95pg/L) and MW 27(3 7 pg1L) p Isopropyltoluene was detected iuwells MW 16(I I pg/L)and MW 25D(2 9 pg/L) and Trichloroethene(1 4 pgiL)way detected in well MW 27 05/06,03 Chioromethane(3 3 pg/l), and 1 l dtchloroethane(0 64 pg/L) were detected to well MW-1 p Isoporpyltoluene was detected in"ells MW-1(l 2 gglL) MW-4(7 0 jig/L) MW 6(5 9 pglL) MW l l(1 4 pg/L) MW-24S(0 85 pg/L) and MW 251)(4 2 pgiL) Tetrachloroethene was also detected in wells MW-21 S(0 85 pg+L)and MW 27(4 6 pgfL) Trichloroethene w as detected in w ell MW-27(1 6 pg/L) 8/5/2003 p-isopropyltoluene was detected In w Llls MW-2(2 9 pg/L) MW It(3 8 pg1L)and MW 251)(0 62 pg/L) Stylene(1 0 pg/L)was detected in well MW I I Wells NIW-I8(0 52 pg1L) MW-2 tS(0 65 pg/L)and MW-27(3 6 pg/L)also contained Tetrachloroethene Well MW 27 contained Trichloroethene(0 98 pg/L) 1232 ANALYTICAL DATA Page 27 of 28