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TABLE 2 <br />Historical Groundwater Monitoring & Analytical Data <br />Stockton Charter Way Commingled Plume <br />440, 441, and 508 West Charter Way, 1426, and 1444 South Lincoln Street, Stockton, CA <br />Well No. <br />Date <br />Notes <br />TOC <br />Elevation <br />(ft -MSL) <br />Depth <br />to <br />Water <br />(feet) <br />Measured <br />SPH <br />Thickness <br />(feet) <br />Calc. <br />GW <br />Elev. <br />(ft -MSL) <br />TPHg <br />(p9/L) <br />TPHd <br />(p9/L) <br />Motor <br />Oil <br />(N9/L) <br />B <br />(p9/L) <br />T <br />(p9/L) <br />E <br />(p9/L) <br />X <br />(p9/L) <br />MTBE <br />(p9/L) <br />TBA <br />(p9/L) <br />DIPE <br />(p9/L) <br />ETBE <br />(p9/L) <br />TAME <br />(p9/L) <br />Ethanol <br />(p9/L) <br />McOH <br />(p9/L) <br />1'2 <br />DCA <br />(p9/L) <br />EDB <br />(p9/L) <br />D.O. <br />(m9/L) <br />Comments <br />MW -20-83.:10/15/09 <br />9.67 <br />22.04 <br />0.00 <br />-12.37 <br />6,700 <br />350 N <br />2,800 <br />15 <br /><10 <br />15 <br />24 <br /><100 <br /><20 <br /><20 <br /><20 <br /><1,000 <br /><5.0 <br /><10 <br />05/24/10 <br />19.58 <br />0.00 <br />-9.91 <br />5,900 <br />430 N <br />2,600 <br /><20 <br /><20 <br /><20 <br />29 <br /><200 <br /><40 <br /><40 <br /><40 <br /><2,000 <br /><10 <br /><20 <br />10/04/10 <br />12.09 <br />20.63 <br />0.00 <br />-8.54 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />10/15/10 <br />- <br />- <br />- <br />1,400 <br /><200 <br />520 <br />2.4 <br />1.0 <br />1.6 <br />34 <br />51 <br />1.4 <br /><0.90 <br /><0.90 <br /><9.0 <br /><0.90 <br />10/07/11 <br />11.66 <br />18.50 <br />0.00 <br />-6.84 <br />370 <br />- <br />4.5 <br />0.57 <br /><0.50 <br /><0.50 <br />42 <br />66 <br />- <br />- <br />- <br />- <br /><0.50 <br />0.67 <br />04/09/12 <br />18.28 <br />0.00 <br />-6.62 <br />4,000 <br />1,400 <br />6.2 <br />2.9 <br />17 <br />33 <br />53 <br />1.48 <br />04/22/13 <br />17.31 <br />0.00 <br />-5.65 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.41 <br />04/23/13 <br />- <br />- <br />- <br />2,400 <br />520 <br />3.9 <br />1.6 <br />9.1 <br />48 <br />54 <br />- <br />10/14/13 <br />18.74 <br />0.00 <br />-7.08 <br />1,500 <br />140 <br />4.3 <br />1.4 <br />12 <br />46 <br />54 <br />0.45 <br />04/22/14 <br />18.19 <br />0.00 <br />-6.53 <br />3,500 <br />500 <br />6.1 <br />2.0 <br />16 <br />67 <br />62 <br />0.35 <br />10/20/14 <br />19.96 <br />0.00 <br />-8.30 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.53 <br />10/21/14 <br />- <br />- <br />- <br />860 <br />140 <br />1.8 <br />0.87 <br />2.2 <br />75 <br />76 <br />- <br />04/27/15 <br />18.51 <br />0.00 <br />-6.85 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.34 <br />04/28/15 <br />- <br />- <br />- <br />620 <br />- <br />- 78 <br />1.7 <br />0.89 <br /><1.7 <br />130 <br />74 <br />- <br />- <br />- <br />- - <br />- <br />- <br />- <br />10/19/15 <br />20.53 <br />0.00 <br />-8.87 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.36 <br />10/22/15 <br />- <br />- <br />- <br />920 <br />- <br />- 2.6 <br />2.0 <br />1.3 <br />7.6 <br />140 <br />80 <br />- <br />- <br />- <br />- - <br />- <br />- <br />- <br />04/11/16 <br />18.42 <br />0.00 <br />-6.76 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.20 <br />04/13/16 <br />- <br />- <br />- <br />1,400 <br />15 <br />2.9 <br />1.6 <br />12 <br />80 <br />62 <br />- <br />12/13/16 <br />19.88 <br />0.00 <br />-8.22 <br />1,100 <br />1.8 <br />1.1 <br />1.5 <br />7.1 <br />130 <br />76 <br />0.59 <br />04/10/17 <br />11.48 <br />13.93 <br />0.00 <br />-2.45 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />04/12/17 <br />- <br />- <br />- <br />610 <br />1.2 <br />0.62 <br />1.3 <br /><1.5 <br />110 <br />72 <br />0.47 <br />10/24/17 <br />15.48 <br />0.00 <br />-4.00 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.32 <br />10/27/17 <br />- <br />- <br />- <br /><50.0 <br /><0.50 <br /><0.50 <br /><0.50 <br /><1.5 <br />1.2 <br /><10.0 <br />- <br />05/07/18 <br />15.28 <br />0.00 <br />-3.80 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.86 <br />05/08/18 <br />- <br />- <br />- <br />1,100 <br />1.3 <br />1.1 <br />1.4 <br />5.0 <br />150 <br /><100 <br />- <br />05/28/19 <br />13.40 <br />0.00 <br />-1.92 <br />780 <br />1.4 <br />1.3 <br />1.0 <br />5.3 <br />180 <br />120 <br />0.28 <br />11/25/19 <br />15.62 <br />0.00 <br />-4.14 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.60 <br />11/27/19 <br />- <br />- <br />- <br />1,000 <br />1.4 <br />0.85 <br /><0.500 <br />4.2 <br />130 <br />80 <br />- <br />04/01 /20 <br />14.90 <br />0.00 <br />-3.42 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />04/02/20 <br />- <br />- <br />- <br />1,400 <br />1.4 <br />0.59 <br /><0.5 <br />5.1 <br />35 <br />50 <br />1.03 <br />11/11/20 <br />16.60 <br />0.00 <br />-5.12 <br />1,100 <br />2.9 <br />1.1 <br />0.98 <br />2.6 <br />170 <br />97 <br />0.37 <br />odor <br />05/05/21 <br />15.67 <br />0.00 <br />-4.19 <br />660 <br />3.1 <br />0.75 <br />0.65 <br />1.7 <br />163 V <br />65 <br />2.29 <br />12/01/21 <br />16.41 <br />0.00 <br />-4.93 <br />860 <br />1.8 <br />0.62 <br />0.59 <br />1.8 <br />130 <br />55 <br /><0.5 <br />0.4 <br />05/04/22 <br />15.87 <br />0.00 <br />-4.39 <br />720 <br />0.78 <br />0.53 <br /><0.500 <br /><1.50 <br />59 <br />44 <br />- <br />0.39 <br />11/29/22 <br />17.68 <br />0.00 <br />-6.20 <br />190 <br />3.1 <br /><0.500 <br /><0.500 <br /><1.50 <br />16 <br />12 <br />0.6 <br />SMW-21-80 11/08/07 <br />9.12 <br />17.25 <br />0.00 <br />-8.13 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />11/30/07 <br />21.57 <br />0.00 <br />-12.45 <br />450 N <br />260 N <br />160 <br />2.1 <br />0.34 <br />4.6 <br /><1.0 <br /><10 <br />0.50 k <br /><2.0 <br /><2.0 <br /><100 <br /><0.50 <br /><1.0 <br />02/04/08 <br />21.35 <br />0.00 <br />-12.23 <br />4,700 <br />150 N <br />1,300 <br />21 <br /><5.0 <br />55 <br /><5.0 <br /><50 <br /><10 <br /><10 <br /><10 <br /><500 <br /><2.5 <br /><5.0 <br />05/05/08 <br />20.60 <br />0.00 <br />-11.48 <br />4,700 <br />130 N <br />1,000 <br />25 <br /><20 <br />25 <br /><20 <br /><200 <br /><40 <br /><40 <br /><40 <br /><2,000 <br /><10 <br /><20 <br />08/04/08 INA <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />09/03/08 <br />21.00 <br />0.00 <br />-11.88 <br />370 <br />67 <br />160 <br />3.7 <br /><1.0 <br />6.0 <br /><1.0 <br />22 <br /><2.0 <br /><2.0 <br /><2.0 <br /><100 <br /><0.50 <br /><1.0 <br />10/28/08 <br />21.58 <br />0.00 <br />-12.46 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />10/29/08 <br />- <br />- <br />- <br />3,100 <br />140 N <br />580 <br />11 <br />1.0 <br />20 <br /><1.0 <br />22 <br /><2.0 <br /><2.0 <br /><2.0 <br /><100 <br /><0.50 <br /><1.0 <br />01/27/09 <br />21.79 <br />0.00 <br />-12.67 <br />2,500 <br />110 N <br />300 <br />5.9 <br /><5.0 <br />10 <br /><5.0 <br /><50 <br /><10 <br /><10 <br /><10 <br /><500 <br /><2.5 <br /><5.0 <br />04/27/09 <br />20.20 <br />0.00 <br />-11.08 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />04/28/09 <br />- <br />- <br />3,600 <br />220 N <br />570 <br />19 <br /><5.0 <br />30 <br /><5.0 <br /><50 <br /><10 <br /><10 <br /><10 <br /><500 <br /><2.5 <br /><5.0 <br />stockton_charter_ way_comingles_plume_4g22.xlsm Page 101 of 116 Stantec <br />