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TABLE 1A <br />CUMULATIVE GROUNDWATER <br />MONITORING AND SAMPLING <br />DATA <br />Former <br />Mobil Service Station 99CAS <br />75 E. Alpine Avenue <br />Stockton, California <br />(Page 5 of 7) <br />Well <br />Sampling <br />TOC <br />DTW <br />GW Elev. <br />NAPL <br />TPHd TPHg <br />O&G <br />MTBE <br />B <br />T <br />E <br />X PCBs SvOCs <br />ID <br />Date <br />(fee[) <br />(feet) <br />(feet) <br />(feet) <br />(pglQ (pg/L) <br />(Ng/L) <br />(Ng/L) <br />(pg/L) <br />(lag/L) <br />(Irg/L) <br />(Ng/L) (Ng/L) (Ng/L) <br />DW2 <br />10/27/09 <br />16.01 <br />40.75 <br />-24.74 <br />No <br />--- --- <br />--- <br />... <br />--- <br />... <br />-_- <br />--- <br />DW2 <br />10/28/09 <br />16.01 <br />--- <br />--- <br /><50 50 <br />--- <br /><0.50 <br />1.6 <br />2.4 <br />0.64 <br />1.8 --- --- <br />DW2 <br />01/25/10 <br />16.01 <br />38.79 <br />-22.78 <br />No <br /><50 <50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.090j <br />0.42j --- -- <br />DW2 <br />04/07/10 <br />16.01 <br />36.95 <br />-20.94 <br />No <br /><50 <50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.068j <br />0.27j <br />DW2 <br />08/09/10 <br />16.01 <br />36.86 <br />-20.85 <br />No <br />--- --- <br />._. <br />___ <br />_ <br />DW2 <br />08/10/10 <br />16.01 <br />--- <br />--- <br />--- <br /><50 <50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.092j --- --- <br />DW2 <br />10/05/10 <br />16.01 <br />37.59 <br />-21.58 <br />No <br />--- <br />--- <br />--- <br />___ <br />--- <br />DW2 <br />10/06/10 <br />16.01 <br />--- <br />--- <br /><50 62d <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.099j --- ... <br />DW2 <br />02/09/11 <br />16.01 <br />36.23 <br />-20.22 <br />No <br /><50m <50 <br />--- <br /><0.50 <br /><0.50 <br />0.38j <br /><0.50 <br />0.32j --- --- <br />DW2 <br />05/18/11 <br />16.01 <br />33.40 <br />-17.39 <br />No <br />--- --- <br />--- <br />--- <br />-- <br />._. <br />... <br />--- ... --- <br />DW2 <br />05/19/11 <br />16.01 <br />--- <br />--- <br />--- <br />73d <50 <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- --- <br />DW3 <br />02/23/09 <br />16.01 <br />39.85 <br />-23.84 <br />No <br />--- 7,600 <br />--- <br /><25 <br />840k <br />650k <br />190k <br />840k --- --- <br />DW3 <br />04/29/09 <br />16.01 <br />39.60 <br />-23.59 <br />No <br /><50 1,100 <br />--- <br />0.77j <br />310 <br />16 <br />32 <br />67 --- <br />DW3 <br />07/14/09 <br />16.99 <br />41.43 <br />-24.44 <br />No <br /><50 500 <br /><5.0 <br />260 <br />13 <br />21 <br />32 --- --- <br />DW3 <br />10/27/09 <br />16.99 <br />41.77 <br />-24.78 <br />No <br />--- <br />--- <br />--- <br />_.. <br />--- <br />DW3 <br />10/28/09 <br />16.99 <br />--- <br />--- <br />--- <br /><50 820 <br />--- <br /><5.0 <br />650 <br />19 <br />48 <br />29 --- --- <br />DW3 <br />01/25/10 <br />16.99 <br />39.78 <br />-22.79 <br />No <br /><50 670d <br />--- <br /><10 <br />460 <br />11 <br />28 <br />10 --- --- <br />DW3 <br />04/07/10 <br />16.99 <br />37.97 <br />-20.98 <br />No <br /><50 830d <br /><10 <br />510 <br />10 <br />35 <br />7.2j <br />DW3 <br />08/09/10 <br />16.99 <br />37.93 <br />-20.94 <br />No <br />... --- <br />... <br />--- <br />--- <br />.__ <br />--- <br />DW3 <br />08/10/10 <br />16.99 <br />--- <br />--- <br />--- <br /><50 880d <br />... <br /><10 <br />590 <br />12 <br />49 <br />8.3j --- --- <br />DW3 <br />10/05/10 <br />16.99 <br />38.66 <br />-21.67 <br />No <br />-- <br />--- <br />-.- <br />___ <br />___ <br />--- <br />DW3 <br />10/06/10 <br />16.99 <br />--- <br />--- <br />--- <br /><50 1,200d <br />••. <br /><10 <br />570 <br />15 <br />44 <br />13 <br />DW3 <br />02/09/11 <br />16.99 <br />37.28 <br />-20.29 <br />No <br /><50m 1,800d <br />--- <br /><10 <br />780 <br />72 <br />71 <br />58 --- --- <br />DW3 <br />05/18/11 <br />16.99 <br />34.44 <br />-17.45 <br />No <br />--- --- <br />--- <br />--- <br />--- <br />--- <br />--- <br />... ... ... <br />DW3 <br />05/19/11 <br />16.99 <br />--- <br />--- <br />--- <br /><50 <50 <br />--- <br />9.7 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- --- <br />DW4 <br />07/14/09 <br />15.98 <br />41.30 <br />-25.32 <br />No <br /><50 <50 <br />--- <br />0.81 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- --- <br />DW4 <br />10/27/09 <br />15.98 <br />41.54 <br />-25.56 <br />No <br /><50 <50 <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- <br />DW4 <br />01/25/10 <br />15.98 <br />39.37 <br />-23.39 <br />No <br /><50 <50 <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- --- <br />DW4 <br />04/07/10 <br />15.98 <br />37.47 <br />-21.49 <br />No <br /><50 <50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- --- <br />DW4 <br />08/09/10 <br />15.98 <br />37.55 <br />-21.57 <br />No <br /><50 <50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />DW4 <br />10/05/10 <br />15.98 <br />38.29 <br />-22.31 <br />No <br /><50 48j,d <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- --- <br />DW4 <br />02/09/11 <br />15.98 <br />36.86 <br />-20.88 <br />No <br /><50m <50 <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />DW4 <br />05/18/11 <br />15.98 <br />34.02 <br />-18.04 <br />No <br /><50b <50 <br />--- <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br /><0.50 --- ... <br />EX1 <br />07/14/09 <br />16.51 <br />40.80 <br />-24.29 <br />No <br />500 170,000 <br />--- <br /><1,200 <br />34,000 <br />65,000 <br />3,000 <br />19,000 --- --- <br />EX1 <br />10/27/09 <br />16.51 <br />41.20 <br />-24.69 <br />No <br />3,500d 110,000 <br />--- <br /><1,200 <br />22,000 <br />54,000 <br />2,300 <br />14,000 --- --- <br />EX1 <br />01/25/10 <br />16.51 <br />39.35 <br />-22.84 <br />No <br />400d 120,000d <br />--- <br /><1,200 <br />18,000 <br />54,000 <br />2,400 <br />16,000 --- --- <br />EX1 <br />04/07/10 <br />16.51 <br />37.47 <br />-20.96 <br />No <br />990 150,000 <br />•-- <br /><1,000 <br />28,000 <br />66,000 <br />3,600 <br />21,000 --- --- <br />EX1 <br />08/09/10 <br />16.51 <br />37.33 <br />-20.82 <br />No <br />--- <br />--- <br />--- <br />--- <br />___ <br />... <br />___ ___ _._ <br />EX1 <br />08/10/10 <br />16.51 <br />--- <br />--- <br />700d 130,000d <br />--- <br /><1,000 <br />25,000 <br />65,000 <br />3,100 <br />19,000 --- --- <br />