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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 />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 />SLVE-1 07/23/07 <br />11.06 18.25 <br />0.00 <br />-7.19 <br />120,000 <br />9,300 <br />24,000 <br />3,400 <br />20,000 <br />3,000 <br /><250 <br /><50 <br /><50 <br /><50 <br /><50 <br />- <br />0.6 <br />10/16/07 <br />20.51 <br />0.00 <br />-9.45 <br />140,000 <br />9,600 <br />25,000 <br />3,800 <br />22,000 <br />1,900 <br /><250 <br /><50 <br /><50 <br /><50 <br /><50 <br /><50 <br />- <br />01/15/08 <br />20.01 <br />0.00 <br />-8.95 <br />110,000 <br />7,600 <br />20,000 <br />2,800 <br />17,000 <br />1,500 <br /><250 <br /><50 <br /><50 <br /><50 <br /><50 <br /><50 <br />04/14/08 <br />18.80 <br />0.00 <br />-7.74 <br />130,000 <br />9,100 <br />23,000 <br />3,200 <br />19,000 <br />1,600 <br /><250 <br /><50 <br /><50 <br /><50 <br /><50 <br /><50 <br />07/14/08 <br />19.15 <br />0.00 <br />-8.09 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />07/15/08 <br />- <br />- <br />- <br />130,000 <br />9,400 <br />24,000 <br />3,400 <br />19,000 <br />1,800 <br /><150 <br /><25 <br /><25 <br /><25 <br />34 <br /><25 <br />10/28/08 <br />20.52 <br />0.00 <br />-9.46 <br />120,000 <br />9,300 <br />14,000 <br />3,800 <br />19,000 <br />1,600 <br /><150 <br /><25 <br /><25 <br /><25 <br />35 <br /><25 <br />0.1 <br />01/27/09 <br />20.50 <br />0.00 <br />-9.44 <br />130,000 <br />10,000 <br />17,000 <br />3,900 <br />19,000 <br />1,400 <br /><150 <br /><25 <br /><25 <br /><25 <br />38 <br /><25 <br />5.7 <br />04/27/09 <br />19.36 <br />0.00 <br />-8.30 <br />130,000 <br />9,400 <br />24,000 <br />3,400 <br />19,000 <br />1,300 <br /><250 <br /><50 <br /><50 <br /><50 <br /><50 <br /><50 <br />1.4 <br />07/22/09 <br />19.77 <br />0.00 <br />-8.71 <br />100,000 <br />8,900 <br />24,000 <br />3,200 <br />18,000 <br />1,400 <br /><250 <br /><50 <br /><50 <br /><50 <br /><50 <br /><50 <br />1.6 <br />10/14/09 <br />20.54 <br />0.00 <br />-9.48 <br />120,000 <br />8,800 <br />22,000 <br />3,200 <br />18,000 <br />1,000 <br /><200 <br /><40 <br /><40 <br /><40 <br /><40 <br /><40 <br />1.1 <br />01/12/10 <br />20.31 <br />0.00 <br />-9.25 <br />120,000 <br />8,300 <br />21,000 <br />2,800 <br />16,000 <br />1,100 <br /><200 <br /><40 <br /><40 <br /><40 <br /><40 <br /><40 <br />1.9 <br />05/24/10 <br />18.00 <br />0.00 <br />-6.94 <br />94,000 <br />12,000 <br />27,000 <br />4,100 <br />22,000 <br />1,700 <br /><1,000 <br /><200 <br /><200 <br /><200 <br /><50 <br /><100 <br />- <br />10/04/10 <br />11.32 19.20 <br />0.00 <br />-7.88 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />1.1 <br />10/14/10 <br />- <br />- <br />- <br />120,000 <br />7,400 <br />23,000 <br />3,200 <br />16,000 <br />1,600 <br /><250 <br /><10 <br /><10 <br /><10 <br />17 <br /><10 <br />- <br />04/04/11 <br />16.80 <br />0.00 <br />-5.48 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.74 <br />A Zone <br />04/06/11 <br />- <br />- <br />- <br />93,000 <br />7,700 <br />21,000 <br />3,200 <br />17,000 <br />1,300 <br /><200 <br /><40 <br />- <br />A Zone <br />10/03/11 <br />17.15 <br />0.00 <br />-5.83 <br />99,000 <br />5,700 <br />17,000 <br />2,400 <br />14,000 <br />690 <br />96 <br />11 <br />0.68 <br />04/09/12 <br />17.40 <br />0.00 <br />-6.08 <br />62,000 <br />4,800 <br />7,000 <br />1,800 <br />10,000 <br />480 <br />110 <br /><20 <br />1.52 <br />10/16/12 <br />17.68 <br />0.00 <br />-6.36 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.44 <br />10/17/12 <br />- <br />- <br />- <br />77,000 <br />5,100 <br />9,200 <br />2,400 <br />14,000 <br />400 <br /><90 <br /><20 <br />- <br />04/22/13 <br />16.21 <br />0.00 <br />-4.89 <br />70,000 <br />5,300 <br />4,300 <br />2,600 <br />14,000 <br />420 <br />200 <br /><20 <br />1.87 <br />10/14/13 <br />17.68 <br />0.00 <br />-6.36 <br />59,000 <br />6,500 <br />2,100 <br />2,600 <br />12,000 <br />500 <br /><90 <br /><20 <br />1.91 <br />04/22/14 <br />17.11 <br />0.00 <br />-5.79 <br />71,000 <br />4,300 <br />1,300 <br />2,300 <br />11,000 <br />290 <br />120 <br /><20 <br />0.55 <br />10/20/14 <br />18.82 <br />0.00 <br />-7.50 <br />58,000 <br />5,100 <br />1,100 <br />2,400 <br />12,000 <br />330 <br /><90 <br /><20 <br />0.58 <br />04/27/15 <br />17.72 <br />0.00 <br />-6.40 <br />74,000 <br />5,100 <br />960 <br />2,100 <br />10,000 <br />180 <br /><5.0 <br /><0.50 <br />0.41 <br />10/19/15 <br />19.62 <br />0.00 <br />-8.30 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.20 <br />10/20/15 <br />- <br />- <br />- <br />63,000 <br />4,300 <br />750 <br />2,400 <br />11,000 <br />310 <br /><166 <br /><16.6 <br />- <br />04/11/16 <br />17.41 <br />0.00 <br />-6.09 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.20 <br />04/12/16 <br />- <br />- <br />- <br />49,000 <br />4,400 <br />330 <br />2,400 <br />10,000 <br />220 <br />290 <br /><12.5 <br />- <br />12/12/16 <br />18.99 <br />0.00 <br />-7.67 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.48 <br />12/14/16 <br />- <br />- <br />- <br />55,000 <br />4,400 <br />150 <br />2,200 <br />9,200 <br />280 <br /><125 <br />110 <br />- <br />04/10/17 <br />11.26 13.11 <br />0.00 <br />-1.85 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />04/12/17 <br />- <br />- <br />- <br />43,000 <br />4,500 <br />310 <br />1,900 <br />9,300 <br />290 <br />850 <br /><25.0 <br />0.15 <br />10/24/17 <br />15.61 <br />0.00 <br />-4.35 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.76 <br />10/25/17 <br />- <br />- <br />- <br />40,000 <br />4,000 <br />140 <br />1,600 <br />9,000 <br />250 <br />200 <br /><12.5 <br />- <br />05/07/18 <br />14.55 <br />0.00 <br />-3.29 <br />38,000 <br />3,900 <br />110 <br />1,600 <br />6,300 <br />270 <br />290 <br /><12.5 <br />0.15 <br />05/28/19 <br />INA <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />Unable to access <br />11/25/19 <br />15.11 <br />0.00 <br />-3.85 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.44 <br />12/03/19 <br />- <br />- <br />- <br />20,000 <br />2,200 <br />46 <br />470 <br />1,200 <br />150 <br /><200 <br />48 <br />- <br />04/01/20 <br />NS <br />14.30 <br />0.03 <br />-3.01 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />10/14/20 <br />G <br />- <br />- <br />- <br />7,600 <br />780 <br />2,300 <br />120 <br />2,900 <br />78 <br />- <br />- <br />- <br />11/12/20 <br />16.11 <br />0.00 <br />-4.85 <br /><100 <br /><0.5 <br /><0.5 <br /><0.5 <br /><1.5 <br /><0.5 <br /><5 <br /><0.5 <br />8.65 <br />11/12/20 <br />G <br />- <br />- <br />- <br />3,000 <br />740 <br />70 <br />250 <br />1,100 <br />94 <br />- <br />- <br />- <br />12/11/20 <br />G <br />3,200 <br />320 <br />540 <br />140 <br />1,400 <br />34 <br />01/13/21 <br />G <br />4,800 <br />500 <br />540 <br />290 <br />1,800 <br />31 <br />stockton_charter_ way_comingles_plume_4g22.xlsm Page 55 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