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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 5 of 8) <br />Well <br />Sampling <br />TOC <br />DTW <br />GW E1ev. <br />NAPL <br />TPHd TPHg <br />O&G MTBE <br />ID <br />Date <br />(feet) <br />(feet) <br />(feet) <br />(feet) <br />(pg/L) (pg/L) <br />(PglL) (pg/L) <br />B <br />i <br />F <br />X PCBs SVOCs <br />(pg/L) <br />(pg/L) <br />(pg/L) <br />(pg/L) (pg/L) (Ng'€_) <br />DWI <br />04/07/10 <br />16.76 <br />37.65 <br />-20.89 <br />No <br /><50 5,700 <br />DWI <br />08/09/10 <br />16 .76 <br />37.59 <br />-20.83 <br />No <br />- <br />- 4.1j <br />550 <br />500 <br />240 <br />900 - - <br />DWI <br />08/10/10 <br />16.76 <br />- <br />- <br /><50- <br />4,400 <br />- - <br />DWI <br />10/05/10 <br />16.76 <br />36.34 <br />-21.58 <br />No <br />73d 5,900 <br />- <10 <br />440 <br />320 <br />180 <br />620 - - <br />DWI <br />02/09/11 <br />16.76 <br />36.94 <br />-20.18 <br />No <br /><50a 4,200 <br />4.5j <br />510 <br />300 <br />180 <br />590 <br />DWI <br />05/18/11 <br />16.76 <br />34.04 <br />-17.28 <br />No <br />- <10 <br />350 <br />730 <br />100 <br />480 - <br />DWI <br />05/19/11 <br />16.76 <br />- <br />-- <br />94d 7,600 <br />- <br />DWI <br />09/22/11 1 <br />16.76 <br />34.11 <br />-17.35 <br />No <br />- <10 <br />1,400 <br />2,400 <br />130 <br />710 <br />DW2 <br />02/23109 <br />16.76 <br />37.47 <br />-20.71 <br />No <br />- 970 <br />DW2 <br />04/29/09 <br />16.76 <br />38.67 <br />-21.91 <br />No <br /><50 <br />- <2.0 <br />45k <br />55k <br />14k <br />70k - <br />DW2 <br />07/14/09 <br />16.01 <br />40.51 <br />-24.50 <br />No <br />51 <br /><50 <br />- <0.50 <br />1.9 <br />1.3 <br />0.24j <br />2.7 <br />DW2 <br />10/27/09 <br />16.01 <br />40.75 <br />-24.74 <br />No <br />60 <br />- <br />- <0.50 <br />0.86 <br />0.69 <br />0.089] <br />1.0 - - <br />DW2 <br />10/28/09 <br />16.01 <br />- <br />- <br />- <br /><50- <br />50 <br />DW2 <br />01/25/10 <br />16.01 <br />38.79 <br />-22.78 <br />No <br /><50 <br />- <0.50 <br />1.6 <br />2.4 <br />0.64 <br />1.8 - - <br />DW2 <br />04/07/10 <br />16.01 <br />36.95 <br />-20.94 <br />No <br />< 50 <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br />0.090] <br />0.42j - - <br />DW2 <br />08/09/10 <br />16.01 <br />36.86 <br />-20.85 <br />No <br /><50 <br />- <0.50 <br /><0.50 <br /><0.50 <br />0.068j <br />0.27j - - <br />DW2 <br />08/10/10 <br />16.01 <br />- <br />- <br />- <br />_ <br /><50 <50 <br />_ _ <br />- - - <br />DW2 <br />10/05/10 <br />16.01 <br />37.59 <br />-21.58 <br />No <br />_ <br />- <0.50 <br /><0.50 <br /><0.50 <br />< 0.50 <br />0.092j - - <br />DW2 <br />10/06/10 <br />16.01 <br />- <br />- <br />- <br /><50 62d <br />DW2 <br />02/08/11 <br />16.01 <br />36.23 <br />-20.22 <br />No <br /><50a <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />0.099j <br />DW2 <br />05/18/11 <br />16.01 <br />33.40 <br />-17.39 <br />No <br /><50 <br />- <0.50 <br /><0.50 <br />0.38j <br /><0.50 <br />0.32j - - <br />DW2 <br />05/19/11 <br />16.01 <br />- <br />--- <br />- <br />73d <50 <br />- <br />-- <br />- <br />- - <br />DW2 <br />09/22/11 <br />16.01 <br />33.41 <br />-17.40 <br />No <br /><50a <br />- <0.50 <br /><0.50 <br /><0.50 <br /><0.50 <br />. <br /><0.50 - - <br /><50 <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 />DW3 <br />04/29/09 <br />16.01 <br />39.60 <br />-23.59 <br />No <br /><50 <br />- <25 <br />840k <br />650k <br />190k <br />840k <br />DW3 <br />07/14/09 <br />16.99 <br />41.43 <br />-24.44 <br />No <br />1,100 <br /><50 <br />- 0.77j <br />310 <br />16 <br />32_ <br />67 <br />DW3 <br />10/27!09 <br />16.99 <br />41.77 <br />-24.78 <br />No <br />500 <br />- <br />- < 5.0 <br />260 <br />13 <br />21 <br />32 <br />DW3 <br />10/28/09 <br />16.99 <br />- <br />- <br />- <br /><50 820 <br />- - <br />DW3 <br />01/25/10 <br />16.99 <br />39.78 <br />-22.79 <br />No <br /><50 670d <br />- <5.0 <br />650 <br />19 <br />29 - - <br />DW3 <br />04/07/10 <br />16.99 <br />37.97 <br />-20.98 <br />No <br /><50 830d <br />- <10 <br />460 <br />11 <br />28 <br />28 <br />10 <br />DW3 <br />08/09/10 <br />16.99 <br />37.93 <br />-20.94 <br />No <br />- <br />- <10 <br />510 <br />10 <br />35 <br />7.2j - - <br />DW3 <br />08/10/10 <br />16.99 <br />- <br />-- <br /><50 880d <br />DW3 <br />10/05/10 <br />16.99 <br />38.66 <br />-21.67 <br />No <br />- <br />- <10 <br />590 <br />12 <br />49 <br />8.3j - - <br />DW3 <br />10/06/10 <br />16.99 <br />- <br />-- <br />- <br /><50 1,200d <br />- <10 <br />570 <br />15 <br />44 <br />13 - - <br />