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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 TOC (ft-MSL) Depth to Water SPH (ft) OWE (ft-MSL) TPH- DRO (pg/L) TPH- GRO B (pg/L) T (pg/L) E (pg/L) X (pg/L) MTBE (pg/L) TBA (pg/L) TAME (pg/L) 1,2- DCA EDB (pg/L) D.O. (mg/L) Comments MW-9 02/09/09 364 981 000 -6 17 <50 <0.5 <0.5 <0.5 <05 1 <05 <05 11 MW-9 05/11/09 3.64 9.01 aoo -5.37 - <50 <0.5 <0.5 <0.5 <0.5 <0.5 - <0.5 <0 5 0 9 MW-9 11/23/09 3.64 11.44 0.00 -7.80 - <50 <0.5 <0.5 <0.5 <0.5 0.7 - <0.5 <0.5 22 MW-9 05/17/10 3.64 7.84 0.00 -4.20 - <50 <0.5 <0.5 <0.5 <0.5 0.9 - <0.5 <0.5 24 MW-9 11/03/10 3.62 10.83 0.00 -7.21 <50 <0.5 <0.5 <0.5 <0.5 6 - - - 1 6 MW-9 01/05/11 3.62 7.63 0.00 -4.01 <50 <0.5 <0.5 <0.5 <0.5 2 - - - 11 MW-9 08/05/11 3.62 9.24 0.00 -5.62 <50 <0.5 <0.5 <0.5 <0.5 2 - - 1 4 MW-9 02/03/12 3.62 9.45 0.00 -5.83 - <50 <0.5 <0.5 <0.5 <0.5 3 - - 08 MW-9 08/09/12 3.62 10.65 0.00 -7.03 <50 <0.5 <0.5 <0.5 <0.5 2 - - - - 2.2 MW-9 03/14/13 3.62 8.22 0.00 -4.60 - <50 <0.5 <0.5 <0.5 <0.5 6 - - - - 1.1 MW-9 09/25/13 3.62 11.09 0.00 -7.47 - <50 <0.5 <0.5 <0.5 <0.5 0.8 - - - - 1.2 MW-9 03/18/14 3.62 9.03 0.00 -5.41 - <50 <0.5 <0.5 <0.5 <0.5 <0.5 - - - - 2.6 MW-9 09/29/14 3.62 11.80 0.00 -8.18 - <50 <0.5 <0.5 <0.5 <0.5 0.6 - - - - 2.6 MW-9 03/25/15 3.62 9.22 0.00 -5.60 - <50 <0.5 <0.5 <0.5 <0.5 0.7 - - - - 1.3 MW-9 09/28/15 3.62 13.01 0.00 -9.39 - <50 <0.5 <0.5 <0.5 <0.5 <2 - <2 <2 - 1.7 MW-9 03/28/16 3.62 8.43 0.00 -4.81 - <50 <0.5 <0.5 <0.5 <0.5 <2 - <2 <2 - 1.2 MW-9 09/26/16 INA 3.62 - - - - - - - - - - - - - --- Unable to locate; paved over MW-9B 11/10/06 3.45 10.40 0.00 -6.95 - - - - - - - - - - Well development performed MW-9B 11/13/06 3.45 10.28 0.00 -6.83 1,603 530 8 2 7 <2 - - - - 1 3 MW-9B 02/12/07 3.45 8.56 0.00 -5.11 - 2,503 1,000 12 1 lo <0.5 - - 1.20 MW-9B 05/14/07 3.45 8.69 0.00 -5.24 6,300 3,100 29 <3 30 <3 - - - 11 MW-913 08/13/07 3.45 11.85 0.00 -8.40 1,400 470 4 <05 4 <0.5 - - - 1.2 MW-9B 11/12/07 3.45 11.16 0.00 -7.71 940 300 3 06 2 <0.5 - - - 1 MW-9B 02/11/08 3.45 7.00 0.00 -3.55 3200 1,000 8 <1 7 <2 - - - 1.5 MW-9B 05/12/08 3.45 8.53 0.00 -5.08 1,600 510 5 0.6 6 <0.5 - - - - 1.7 MW-9B 08/11/08 3.45 10.83 0.00 -7.38 - 1,100 320 3 0.5 4 <2 - - 2 1 MW-9B 11/10/08 3.45 12.68 0.00 -9.23 - 1,100 370 <5 <5 <5 <5 - <5 <5 - 1.7 MW-9B 02/09/09 3.45 9.73 0.00 -6.28 4,100 1,300 14 2 9 <1 - <1 <1 - 1.7 MW-9B 05/11/09 3.45 8.93 0.00 -5.48 4,200 1,700 11 <3 6 <3 - <3 <3 - 1.7 MW-961 11/23/09 3.45 11.38 0.00 -7.93 4,300 1,500 11 1 7 <1 - <1 <1 - 1.0 MW-9B 05/17/10 3.45 7.60 0.00 -4.15 340 7 <0.5 <0.5 1 <0.5 - <0.5 <0.5 - 1.3 MW-9B 11/03/10 3.43 10.91 0.00 -7.48 1,800 780 5 1 4 <1 - - - - 1.2 MW-9B 01/05/11 3.43 7.80 0.00 -4.37 350 29 <0.5 <0.5 1 <0.5 - - - - 1.6 MW-9B 08/05/11 3.43 9.19 0.00 -5.76 1,700 560 4 0.6 4 <0.5 - - - - 1.2 MW-9B 02/03/12 3.43 9.33 0.00 -5.90 100 <0.5 <0.5 <0.5 <0.5 <0.5 - - - - 1.2 MW-9B 08/09/12 3.43 10.65 0.00 -7.22 3,100 680 5 <5 <5 <5 - - - - 2.1 MW-9I3 03/14/13 3.43 8.05 0.00 -4.62 3,000 960 9 <3 9 <3 - - - - 2.0 MW-9B 09/25/13 3.43 11.13 0.00 -7.70 5,500 1,500 15 2 14 <1 - - - - 1.6 MW-9B 03/18/14 3.43 8.96 0.00 -5.53 1,200 410 5 1 5 <0.5 - - - - 1.5 MW-9B 09/29/14 3.43 12.43 0.00 -9.00 4,600 1,700 17 <3 14 <3 - - - - 1.9 MW-913 03/25/15 3.43 9.23 0.00 -5.80 - <50 <0.5 <0.5 <0.5 <0.5 <0.5 - - - - 1.4 MW-913 09/28/15 3.43 13.09 0.00 -9.66 - 110 <0.5 <0.5 <0.5 1 <2 - <2 <2 - 1.7 MW-9B 03/28/16 3.43 8.41 0.00 -4.98 - 210 5 <0.5 <0.5 2 <2 - <2 <2 - 1.4 MW-913 09/28/16 3.43 12.69 0.00 -9.18 - 520 180 2 <0.5 2 <2 - <2 . <2 - 1.2 MW-9C 11/10/06 3.52 13.61 0.00 -10.09 - - - - - - - - - - - Well development performed MW-9C 11/13/06 3.52 12.12 0.00 -8.60 1,100 370 18 2 6 <2 - - - - 1.7 MW-9C 02/12/07 3.52 10.73 0.00 -7.21 1,400 430 20 1 7 <0.5 - - - - 0.9 MW-9C 05/14/07 3.52 11.20 0.00 -7.68 - 790 420 19 1 7 <2 - - - - 0.9 MW-9C 08/13/07 3.52 13.06 0.00 -9.54 250 69 3 <0.5 0.8 <05 - - - - 1.3 MW-9C 11/12/07 3.52 12.51 0.00 -8.99 120 <0.5 <0.5 <0.5 <0.5 <0.5 - 20 MW-9C 02/11/08 3.52 10.00 0.00 -6.48 - 170 47 2 <0.5 0.5 <2 - 1 8 94054 GW Tables.xls Page 19 of 28 Stantec