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TABLE IA <br />CUMULATIVE GROUNDWATER MONITORING AND SAMPLING DATA <br />Former Mobil Service Station 99CAS <br />75 E. Alpine Avenue <br />Stockton, California <br />(Page 4 of 8) <br />Well <br />Sampling <br />TOC <br />BTW <br />GW Elev. <br />NAPL <br />TPHd <br />TPHg <br />D&G MTEE <br />6 <br />T <br />ID <br />Date <br />(feet) <br />(feet) <br />(feet) <br />(Feet) <br />(pg/L) <br />(p9/L) <br />(pgrL) (ug/L) <br />(pg/L) <br />(pg(L) <br />E <br />(V9/L) <br />X PCBs SVQCs <br />(pg/L) <br />(pg/L) (u9/L) <br />MW6 <br />07/14/09 <br />16.31 <br />40.80 <br />-24.49 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW6 <br />10/27/09 <br />16.31 <br />41.10 <br />-24.79 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br />0.37j <br />0.048] <br />0.26j <br />MW6 <br />01/25/10 <br />16.31 <br />39.18 <br />-22.87 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW6 <br />04/07/10 <br />16.31 <br />37.35 <br />-21.04 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br />0.36 <br /><0.50 <br />0.18j <br />MW6 <br />08/09/10 <br />16.31 <br />37.26 <br />-20.95 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.092] <br />MW6 <br />10/05/10 <br />16.31 <br />37.98 <br />-21.67 <br />No <br /><50 <br />63d <br />- <0.50 <br /><0.50 <br />0.29j <br /><0.50 <br /><0.50 <br />MW6 <br />02/09/11 <br />16.31 <br />36.59 <br />-20.28 <br />No <br /><50a <br />50j <br />- <0.50 <br />0.56 <br />5.5 <br />MW6 <br />05/18/11 to present <br />16.31 <br />Unable to <br />locate well. <br />0.52 <br />3.2 - <br />MW7 <br />11/26/07 <br />14.67 <br />36.31 <br />-21.64 <br />No <br /><47 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />02/28/08 <br />14.67 <br />33.90 <br />-19.23 <br />No <br /><47.2 <br /><50.0 <br />- <0.500 <br /><0.500 <br />4.78 <br /><0.500 <br />_ <br /><0.500 <br />MW7 <br />05/29/08 <br />14.67 <br />34.40 <br />-19.73 <br />No <br /><47.2 <br /><50.0 <br />- <0.500 <br /><0.500 <br /><0.500 <br /><0.500 <br />_ <br /><0.500 <br />MW7 <br />08/27/08 <br />14.67 <br />36.93 <br />-22.26 <br />No <br /><47 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />11/13/08 <br />14.67 <br />37.24 <br />-22.57 <br />No <br /><47 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />01/28/09 <br />14.67 <br />38.05 <br />-23.38 <br />No <br /><50 <br /><50 <br />- <0.50 <br />0.21i,j <br />0.35j <br />0.23i,j <br />0.87j <br />MW7 <br />04/29/09 <br />14.67 <br />37.80 <br />-23.13 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />07/14/09 <br />14.67 <br />39.60 <br />-24.93 <br />No <br /><50 <br />64 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />10/27/09 <br />14.67 <br />40.01 <br />-25.34 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.085j <br />MW7 <br />01/25/10 <br />14.67 <br />37.90 <br />-23.23 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />04/07/10 <br />14.67 <br />36.05 <br />-21.38 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.093] <br />MW7 <br />08/09/10 <br />14.67 <br />36.00 <br />-21.33 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />10/05/10 <br />14.67 <br />36.80 <br />-22.13 <br />No <br /><50 <br />80d <br />-- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />02/09/11 <br />14.67 <br />36.35 <br />-21.68 <br />No <br /><50a <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />05/18/11 <br />14.67 <br />32.67 <br />-18.00 <br />No <br /><50b <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW7 <br />09/22/11 <br />14.67 <br />32.51 <br />-17.84 <br />No <br /><50a <br />81 <br />- <0.50 <br />15 <br />9.5 <br />3.3 <br />6.8 - - <br />MW8 <br />07/14/09 <br />15.45 <br />40.74 <br />-25.29 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW8 <br />10/27/09 <br />15.45 <br />41.02 <br />-25.57 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br />1.0 <br />0.12j <br />0.81 <br />MW8 <br />01/25/10 <br />15.45 <br />38.85 <br />-23.40 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW8 <br />04/07/10 <br />15.45 <br />37.00 <br />-21.55 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.15j <br />MW8 <br />08/09/10 <br />15.45 <br />37.05 <br />-21.60 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MWS <br />10/05/10 <br />15.45 <br />37.75 <br />-22.30 <br />No <br /><50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW8 <br />02/09/11 <br />15.45 <br />36.50 <br />-21.05 <br />No <br /><50a <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.091] <br />MW8 <br />05/18/11 <br />15.45 <br />33.55 <br />-18.10 <br />No <br /><50b <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />MW8 <br />09/22/11 <br />15.45 <br />33.42 <br />-17.97 <br />No <br /><50a <br />82 <br />- <0.50 <br />16 <br />9.9 <br />3.3 <br />6.6 - - <br />DWI <br />02/23/09 <br />16.99 <br />39.48 <br />-22.49 <br />No <br />- <br />59,000 <br />- <50 <br />5,600k <br />12,OOOk <br />1,800k <br />9,800k <br />DWI <br />04/29/09 <br />16.99 <br />39.35 <br />-22.36 <br />No <br /><50 <br />37,000 <br />- <250 <br />2,800 <br />6,500 <br />870 <br />4,600 <br />DWI <br />07/14/09 <br />16.76 <br />41.17 <br />-24.41 <br />No <br /><50 <br />14,000 <br />- <50 <br />1,200 <br />2,500 <br />470 <br />2,400 <br />DWI <br />10/27/09 <br />16.76 <br />41.44 <br />-24.68 <br />No <br />57d <br />8,000 <br />- <25 <br />990 <br />1,100 <br />360 <br />1,500 <br />DWI <br />01/25/10 <br />16.76 <br />39.59 <br />-22.83 <br />No <br />73d <br />6,400 <br />- <12 <br />640 <br />590 <br />260 <br />1,000 - - <br />