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TABLE 2 Historical Groundwater Monitoring & Analytical Data Former Chevron Service Station No. 94054 2103 Country Club Boulevard, Stockton, California Well No. Date Notes T OC (ft-MSL) Depth to Water (ft) SPH (ft) OWE ( ft-MSL) TPH- DRO TPH- GRO B (pg/L) T (pg/L) E (pg/L) X , (pg/L) MTBE (pg/L) TBA (pg/L) TAME (pg/L) 12- , DCA EDB (pg/L) D.O. (mg/L) Comments MW-2B 11/23/09 391 11.88 0.00 -797 7,300 2,100 25 3 17 <3 <3 <3 05 MW-2B 05/17/10 3.91 8.17 0.00 -4.26 3,100 470 10 1 14 1 - <0.5 <05 1.2 MW-2B 11/03/10 3.93 11.35 0.00 -7.42 8,000 2,800 36 5 24 <3 - -- -- 0.8 MW-2B 01/05/11 3_93 8.71 0.00 -4.78 3,700 1,200 13 <1 16 <1 - - 1.4 MW-28 08/02/11 3.93 9.60 0.00 -5.67 * 10,000 3,300 47 8 32 <5 - - 1.1 MW-2B 02/03/12 3.93 9.82 0.00 -5.89 12,000 3.500 45 7 30 <3 - 1.2 MW-2B 08/09/12 3.93 11.12 0.00 -7.19 12,000 3,200 34 <5 14 <5 - - - 1.1 MW-213 03/14/13 3.93 8.55 0.00 -4.62 - 9,600 3,600 43 6 28 <5 - - 1.1 MW-28 09/25/13 3.93 11,60 0.00 -7.67 7,000 2,500 32 4 18 2 - - - 0.8 MW-2B 03/18/14 3.93 9.57 0.00 -5.64 7,200 3,100 15 3 14 4 - - - 0.9 MW-2B 09/29/14 3.93 12.85 0.00 -8.92 4,400 1,200 3 1 9 3 - - - 1.0 MW-2B 03/25/15 3.93 9.70 0.00 -5.77 840 200 1 <0.5 1 3 - -- - 1.8 MW-2B 09/27/15 193 13.53 0.00 -9.60 600 <0.5 <0.5 <0.5 <0.5 4 - <2 <2 2.0 MW-2B 03/28/16 3.93 8.89 0.00 -4.96 1,700 120 1 <0.5 3 3 - <2 <2 1.2 MW-2B 09/26/16 3.93 13.08 0_00 -915 1,500 22 1 <0.5 3 3 <2 <2 1.6 MW-2B 03/27/17 3.93 5.78 0.00 -1.85 6.500 2.400 16 3 12 <3 - <3 <3 1.3 MW-2B 09/25/17 3.93 11.00 0.00 -7.07 - 970 110 0.9 <0.6 2 <2 - <2 <2 -- 1.1 MW-2C 11/10/06 4.06 10.15 0.00 -6.09 - - -- - - - Well development performed MW-2C 11/13/06 4.06 12.50 0.00 -8.44 2,500 480 19 33 170 <2 1.4 MW-2C 02/12/07 406 11.11 0.00 -7.05 2,900 720 17 12 51 <0.5 - 1.6 MW-2C 05/14/07 4.06 11.61 0.00 -7.55 610 86 3 1 13 <2 0.8 MW-2C 08/13/07 406 13.40 0.00 -9.34 1,100 230 5 4 14 <0.5 - - 1.3 MW-2C 11/12/07 4.06 12.92 0.00 -8.86 500 99 2 1 7 <0.5 - - 1.4 MW-2C 02/11/08 4.06 10.41 0_00 -6.35 550 50 1 <0.5 9 <2 - 1.1 MW-2C 05/12/08 406 11.56 0.00 -7.50 470 41 1 <0.5 6 <0.5 - 1.3 MW-2C 08/11/08 4.06 13.32 0.00 -9.26 - 880 180 3 2 12 <2 -- - - 1.9 MW-2C 11/10/08 4.06 13.01 0.00 -8.95 790 150 3 2 12 <0.5 - <0.5 <0.5 1.7 MW-2C 02/09/09 4.06 1208. 0.00 -8.02 - 340 22 <0.5 0.9 7 <0.5 <0.5 <0.5 1.2 MW-2C 05/11/09 4.06 11.92 0.00 -7.86 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 - 1.0 MW-2C 11/23/09 4.06 13.21 0.00 -9.15 - <50 3 <0.5 <0.5 <0.5 <0.5 <0_5 <0.5 - 0.8 MW-2C 05/17/10 406 10.86 0.00 -6.80 <50 6 • <05 <0.5 <0.5 <0.5 <0.5 <0.5 - 1.1 MW-2C 11/03/10 4.04 12.61 0.00 -8.57 - 57 19 <0.5 <0.5 0.8 <0.5 -- - - 1.1 MW-2C 01/05/11 4.04 10.64 0.00 -6.60 <50 <0.5 <0.5 <0.5 <0.5 <0.5 1.2 MW-2C 08/02/11 4.04 11.45 0.00 -7.41 <50 <0.5 <0.5 <0.5 <05 <0.5 - - 1.4 MW-2C 02/03/12 404 10.80 0.00 -6.76 <50 <0.5 <0.5 <0.5 <0.5 <0.5 - 1.0 MW-2C 08/09/12 4.04 12.18 0.00 -814 <50 <0.5 <0.5 <0.5 <0.5 <0.5 - - - 1.2 MW-2C 03/14/13 4.04 10.25 0.00 -6.21 <50 <0.5 <0.5 <0.5 <0.5 <0.5 - - 1.3 MW-2C 09/25/13 4.04 12.10 0.00 -8.06 1,600 480 7 1 7 <0.5 - - - - 1.0 MW-2C 03/18/14 4.04 10.64 0.00 -660 180 18 <0.5 <0.5 1 <0.5 1.1 MW-2C 09/29/14 4.04 13.40 0.00 -936 310 80 1 <0.5 1 <0.5 - - 1.2 MW-2C 03/25/15 4.04 11.54 0.00 -7.50 - <50 <0.5 <0.5 <0.5 <0.5 <0.5 - -- - 1.1 MW-2C 09/27/15 4.04 14.09 0.00 -10.05 54 <0.5 <0.5 <0.5 <0.5 <2 - <2 <2 1.4 MW-2C 03/28/16 4.04 10.88 0.00 -6.84 <50 <0.5 <0.5 <0.5 <0.5 <2 <2 <2 1.3 MW-2C 09/26/16 4.04 13.82 0.00 -9.78 360 91 1 <0.5 1 <2 - <2 <2 1.9 MW-2C 03/27/17 4.04 8.05 0.00 -4.01 2,100 520 10 2 10 <2 - .<2 <2 1.0 MW-2C 09/25/17 4.04 11.11 0.00 -7.07 -- <50 0.8 <0.5 <0.5 <0.5 <2 - <2 <2 - 1.3 MW-3 11/05/86 11.83 0.00 -- - MW-3 11/13/86 -- 11.90 0.00 - - -- - - -- - - - MW-3 09/09/87 2.32 -- -- -- 4,900 2,500 2,400 1,100 5,700 MW-3 08/19/88 2.32 14.90 0.00 -12.58 45,000 -- -- - -- - - MW-3 09/15/88 _ 2.32 15.24 0.36 -12.92 - -- - - - - - 94054 GW Tables.xls Page 6 of 29 Stantec