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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 />AMW-6 04/27/09 <br />8.92 <br />18.54 <br />0.00 <br />-9.62 <br />35,000 <br />4,000 <br />310 <br />1,400 <br />2,100 <br /><100 <br /><2,000 <br /><100 <br /><100 <br /><100 <br /><60,000 <br /><100 <br />0.2 <br />07/22/09 <br />19.16 <br />0.00 <br />-10.24 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />11.9 <br />07/23/09 <br />- <br />- <br />- <br />29,000 <br />4,500 <br />300 <br />1,400 <br />2,400 <br /><100 <br /><2,000 <br /><100 <br /><100 <br /><100 <br /><60,000 <br /><100 <br />- <br />02/18/10 <br />18.79 <br />0.00 <br />-9.87 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.4 <br />02/19/10 <br />- <br />- <br />- <br />31,000 N <br />4,400 <br />320 <br />1,600 <br />2,100 <br /><100 <br /><2,000 <br /><100 <br /><100 <br /><100 <br /><60,000 <br /><100 <br />- <br />05/24/10 <br />17.52 <br />0.00 <br />-8.60 <br />79,000 <br />3,500 <br />230 <br />1,200 <br />2,100 <br /><50 <br /><1,000 <br /><50 <br /><50 <br /><50 <br /><30,000 <br /><50 <br /><50 0.8 <br />Hydrocarbon odor <br />10/04/10 <br />10.70 <br />18.47 <br />0.00 <br />-7.77 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- - <br />10/15/10 <br />- <br />- <br />- <br />27,000 <br />3,300 <br />240 <br />1,400 <br />2,200 <br /><5.0 <br /><25 <br /><5.0 <br /><5.0 <br /><5.0 <br /><50 <br /><5.0 <br />- <br />04/04/11 <br />16.01 <br />0.00 <br />-5.31 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.57 <br />B Zone <br />04/05/11 <br />- <br />- <br />- <br />20,000 <br />4,000 <br />250 <br />1,000 <br />1,000 <br /><0.50 <br />20 <br />- <br />B Zone <br />10/03/11 <br />11.29 <br />0.00 <br />-0.59 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.29 <br />10/04/11 <br />- <br />- <br />- <br />16,000 <br />2,500 <br />190 <br />560 <br />1,300 <br /><5.0 <br /><25 <br />- <br />04/09/12 <br />16.25 <br />0.00 <br />-5.55 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />04/10/12 <br />- <br />- <br />- <br />9,700 <br />1,800 <br />130 <br />350 <br />520 <br /><3.0 <br />20 <br />0.67 <br />10/16/12 <br />15.41 <br />0.00 <br />-4.71 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />9.56 <br />10/17/12 <br />- <br />- <br />- <br />2,900 <br />420 <br />32 <br />82 <br />100 <br /><0.90 <br />29 <br />- <br />04/22/13 <br />15.64 <br />0.00 <br />-4.94 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />1.54 <br />04/23/13 <br />- <br />- <br />- <br />11,000 <br />1,600 <br />91 <br />330 <br />280 <br /><0.90 <br />12 <br />- <br />10/14/13 <br />17.34 <br />0.00 <br />-6.64 <br />13,000 <br />2,700 <br />140 <br />480 <br />330 <br /><2.5 <br /><25 <br />0.63 <br />04/22/14 <br />16.67 <br />0.00 <br />-5.97 <br />8,500 <br />740 <br />48 <br />240 <br />150 <br /><1.5 <br />23 <br />0.32 <br />10/20/14 <br />18.43 <br />0.00 <br />-7.73 <br />- <br />Unable to remove lid for <br />10/22/14 INA <br />- <br />- <br />- <br />sampling <br />04/27/15 <br />17.98 <br />0.00 <br />-7.28 <br />0.67 <br />04/28/15 <br />- <br />- <br />- <br />9,000 <br />1,800 <br />65 <br />210 <br />96 <br /><4.2 <br /><41.6 <br />- <br />10/19/15 <br />20.00 <br />0.00 <br />-9.30 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.24 <br />10/21/15 <br />- <br />- <br />- <br />6,100 <br />910 <br />41 <br />160 <br />69 <br /><0.84 <br />16 <br />- <br />04/11/16 <br />16.55 <br />0.00 <br />-5.85 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.15 <br />04/13/16 <br />- <br />- <br />- <br />18,000 <br />4,200 <br />250 <br />620 <br />310 <br /><3.1 <br /><31.2 <br />- <br />12/12/16 <br />18.11 <br />0.00 <br />-7.41 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.76 <br />12/13/16 <br />- <br />- <br />- <br />6,700 <br />1,100 <br />52 <br />130 <br />63 <br /><1.7 <br /><16.6 <br />- <br />04/10/17 <br />10.62 <br />12.34 <br />0.00 <br />-1.73 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />04/11/17 <br />- <br />- <br />- <br />14,000 <br />4,000 <br />160 <br />410 <br />180 <br /><2.5 <br />26 <br />0.14 <br />10/26/17 <br />16.39 <br />0.00 <br />-5.78 <br />8,600 <br />960 <br />44 <br />230 <br />77 <br /><1.7 <br /><33.3 <br />0.32 <br />05/09/18 <br />12.45 <br />0.00 <br />-1.84 <br />9,000 <br />1,400 <br />57 <br />190 <br />72 <br /><2.50 <br /><50.0 <br />0.31 <br />05/28/19 INA <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />Well lid stuck <br />11/25/19 <br />13.96 <br />0.00 <br />-3.35 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />0.25 <br />11/26/19 <br />- <br />- <br />- <br />8,400 <br />820 <br />34 <br />120 <br />28 <br /><2.50 <br /><50.0 <br />- <br />04/01/20 <br />14.01 <br />0.00 <br />-3.40 <br />11,000 <br />1,000 <br />38 <br />120 <br />34 <br /><5 <br /><50 <br />0.33 <br />Odor <br />11/09/20 <br />15.64 <br />0.00 <br />-5.03 <br />8,000 <br />1,000 <br />36 <br />150 <br />29 <br /><5 <br />50 <br />0.73 <br />05/05/21 <br />14.77 <br />0.00 <br />-4.16 <br />7,600 <br />870 <br />31 <br />86 <br />24 <br /><5 <br /><50 <br />2.09 <br />11/23/21 <br />15.24 <br />0.00 <br />-4.63 <br />8,200 <br />1,100 <br />37 <br />140 <br />31 <br /><5 <br /><50 <br />0.21 <br />05/05/22 <br />14.31 <br />0.00 <br />-3.70 <br />9,500 <br />1,100 <br />36 <br />140 <br />33 <br /><5.00 <br /><5.000 <br />1.03 <br />11/30/22 <br />16.50 <br />0.00 <br />-5.89 <br />12,000 <br />1,200 <br />41 <br />170 <br />38 <br /><5.00 <br /><5.000 <br />0.85 <br />AMW-7 10/28/93 <br />8.88 <br />38.11 <br />0.00 <br />-29.23 <br />42,000 <br />3,100 <br />9,300 <br />970 <br />6,000 <br />- <br />- <br />- <br />03/23/94 <br />36.63 <br />0.00 <br />-27.75 <br />44,000 <br />3,000 <br />8,600 <br />870 <br />5,600 <br />stockton_charter_ way_comingles_plume_4g22.xlsm Page 17 of 116 Stantec <br />