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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 />(pg/L) <br />TPHd <br />(pg/L) <br />Motor <br />Oil <br />(pg/L) <br />B <br />(pg/L) <br />T <br />(pg/L) <br />E <br />(pg/L) <br />X <br />(pg/L) <br />MTBE <br />(pg/L) <br />TBA <br />(pg/L) <br />DIPE <br />(pg/L) <br />ETBE <br />(pg/L) <br />TAME <br />(pg/L) <br />Ethanol <br />(pg/L) <br />McOH <br />(pg/L) <br />1,2 - <br />DCA <br />(pg/L) <br />EDB <br />(pg/L) <br />D.O. <br />(mg/L) <br />Comments <br />DMW-15 04/11/12 <br />12.49 <br />- <br />- <br />- <br /><50 - <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />1.4 <br /><5.0 <br />- <br />- <br />- - - <br /><0.50 <br />- <br />2.45 <br />04/22/13 <br />INA <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />Construction equipment <br />10/14/13 <br />INA <br />parked over <br />04/22/14 <br />INA <br />Car parked over well <br />10/20/14 <br />INA <br />04/27/15 <br />INA <br />Locked gate <br />10/19/15 <br />NSP, INA <br />Inaccessible <br />04/11/16 <br />INA <br />Inaccessible <br />06/08/16 <br />INA <br />Inaccessible <br />12/12/16 <br />19.18 <br />0.00 <br />-6.69 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />1.58 <br />12/14/16 <br />- <br />- <br />- <br /><50.0 <br /><0.50 <br /><0.50 <br /><0.50 <br /><1.5 <br />6.5 <br /><5.0 <br /><0.50 <br />- <br />04/11/17 <br />INA <br />No access fence locked <br />10/24/17 <br />INA <br />Unable to access <br />05/07/18 <br />INA <br />Unable to access <br />05/28/19 <br />INA <br />Unable to access <br />11/25/19 <br />INA <br />Unable to access <br />04/01/20 <br />INA <br />Unable to access <br />11/09/20 <br />INA, NSP <br />05/07/21 <br />INA, NS <br />11/22/21 <br />INA, NS <br />05/05/22 <br />INA, NS <br />11/23/22 <br />INA, NS <br />SLMW-1 02/07/96 <br />9.77 <br />29.81 <br />0.00 <br />-20.04 <br />160,000 <br />22,000 <br />36,000 <br />4,100 <br />20,000 <br />- <br />01/12/07 <br />19.98 <br />0.00 <br />-10.21 <br />- <br />- <br />- <br />- <br />- <br />1.7 <br />01/16/07 <br />20.04 <br />0.00 <br />-10.27 <br />14,000 <br />1,100 <br />410 <br />620 <br />1,000 <br />160 <br />41 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />2.2 <br />01/16/07 <br />DUP <br />- <br />- <br />- <br />14,000 <br />1,000 <br />420 <br />610 <br />1,000 <br />170 <br />40 <br /><2.0 <br /><2.0 <br /><2.0 <br /><2.0 <br /><2.0 <br />- <br />04/13/07 <br />19.69 <br />0.00 <br />-9.92 <br />5,900 <br />350 <br />40 <br />230 <br />180 <br />150 <br />22 <br /><0.90 <br /><0.90 <br /><0.90 <br />- <br />- <br />1.8 <br />04/13/07 <br />DUP <br />- <br />- <br />- <br />6,300 <br />410 <br />48 <br />320 <br />240 <br />160 <br />24 <br /><0.90 <br /><0.90 <br /><0.90 <br />- <br />- <br />07/23/07 <br />11.05 <br />19.19 <br />0.00 <br />-8.14 <br />11,000 <br />820 <br />110 <br />310 <br />260 <br />34 <br />17 <br /><1.5 <br /><1.5 <br /><1.5 <br />3.1 <br />0.7 <br />07/23/07 <br />DUP <br />- <br />- <br />- <br />10,000 <br />800 <br />98 <br />300 <br />270 <br />28 <br />16 <br /><1.5 <br /><1.5 <br /><1.5 <br />2.2 <br />- <br />10/16/07 <br />20.58 <br />0.00 <br />-9.53 <br />13,000 <br />1,400 <br />200 <br />450 <br />410 <br />45 <br />16 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />10/16/07 <br />DUP <br />- <br />- <br />- <br />10,000 <br />1,200 <br />180 <br />400 <br />350 <br />50 <br />18 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />01/15/08 <br />20.05 <br />0.00 <br />-9.00 <br />9,000 <br />1,100 <br />120 <br />360 <br />390 <br />39 <br />20 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />01/15/08 <br />DUP <br />- <br />- <br />- <br />6,200 <br />740 <br />76 <br />230 <br />240 <br />29 <br /><15 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />Duplicate 4 <br />04/14/08 <br />18.86 <br />0.00 <br />-7.81 <br />8,900 <br />800 <br />82 <br />280 <br />300 <br />30 <br />17 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />04/14/08 <br />DUP <br />- <br />- <br />- <br />8,100 <br />710 <br />74 <br />280 <br />290 <br />32 <br />14 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />07/14/08 <br />19.18 <br />0.00 <br />-8.13 <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />- <br />07/15/08 <br />- <br />- <br />- <br />16,000 <br />1,500 <br />190 <br />620 <br />790 <br />32 <br />26 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />07/15/08 <br />DUP <br />- <br />- <br />- <br />3,600 <br />390 <br />28 <br />45 <br />66 <br />29 <br />16 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />10/28/08 <br />20.78 <br />0.00 <br />-9.73 <br />7,800 <br />690 <br />36 <br />160 <br />110 <br />16 <br />9.2 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />10/28/08 <br />DUP <br />- <br />- <br />- <br />9,800 <br />720 <br />44 <br />210 <br />150 <br />16 <br />11 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />2.4 <br />01/27/09 <br />20.61 <br />0.00 <br />-9.56 <br />8,300 <br />840 <br />54 <br />170 <br />160 <br />17 <br />8.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />5.1 <br />01/27/09 <br />DUP <br />- <br />- <br />- <br />8,400 <br />850 <br />56 <br />180 <br />170 <br />16 <br />8.8 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />- <br />04/27/09 <br />19.42 <br />0.00 <br />-8.37 <br />6,800 <br />800 <br />42 <br />120 <br />140 <br />18 <br />10 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />1.7 <br />04/27/09 <br />DUP <br />- <br />- <br />7,100 <br />730 <br />38 <br />120 <br />130 <br />16 <br />9.1 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br /><1.5 <br />- <br />Stockton -charter way_comingles_plume_4g22.xlsm Page 45 of 116 Stantec <br />