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TABLE 1 <br /> WELL CONSTRUCTION DETAILS <br /> Former Beneto Facility <br /> 749 East Charter Way <br /> Stockton , California <br /> Well Total Well Casing Screened <br /> Well Installation Elevation Casing Depth Depth Diameter Interval Filter Pack <br /> Number Date TOC* (feet) Material (feet) (feet) (inches) (feet) Interval (feet) <br /> Shallow Groundwater Wells <br /> MW-1 1 /26-30/1990 15 .42 PVC 50 -- _-- <br /> M `W-2 1 /26-30/1990 16 .31 PVC 50 <br /> MW-3 1 /26-30/1990 15 .44 PVC 47 47 2 10 - 47 7 - 47 <br /> MW -4 3/30/1992 15 . 18 PVC 65 65 2 45 - 65 45 - 65 <br /> MW 5 . A/3 /1992 15.79 PVC 65 65 2 45 - 65 25 - 65 <br /> c MWS f o -- - 4%/1992 16 .36 PVC 65 65 2 45 - 65 40 - 65 <br /> MW-7 7/29 - 8/3/1993 14 .86 PVC 65 65 2 45 - 65 25 - 65 <br /> MW-8 7/29 - 8/3/1993 14.71 PVC 65 65 2 45 - 65 25 - 65 <br /> MW -9 9/12/1994 14 .69 PVC 65 65 2 45 - 65 35 - 65 <br /> MW- 10 9/9/1994 14. 20 PVC 65 65 2 45 - 65 37 - 65 <br /> IIMW- 11 9/12/1994 14 .37 PVC 65 65 2 45 - 65 37 - 65 <br /> MW- 12 7/15/1999 16 .08 PVC 59 59 2 29 - 59 22 - 59 <br /> MW-13 11 /6/2000 14 . 76 PVC 45 45 2 25 - 45 19 - 45 <br /> MW- 14 7/28/2005 14 .37 PVC 50 50 2 30 - 50 27 - 50 <br /> II MW- 16 7/27/2005 14 .71 PVC 50 50 2 30 - 50 27 - 50 <br /> MW- 11 MB 12/15/2003 14 .66 PVC 42. 5 42 .5 2 27. 5 - 42. 5 25 - 42. 5 <br /> MW-208 12/17/2003 15. 15 PVC 75 75 2 65 - 75 63 - 75 <br /> IlDeep Groundwater Wells <br /> MW- 17B 10/9/2006 14 .83 PVC 135 135 2 125 - 135 120 - 135 <br /> II MW - 18C 10/18/2006 14. 88 PVC 160 160 2 145 - 160 155 - 16o <br /> Vapor Wells <br /> IIVW -1 2/27/1996 PVC 45 45 2 10 - 45 10 - 45 <br /> VW-2 2/26/1996 PVC 62 62 2 57 - 62 56 - 62 <br /> VW-3 2/27/1996 --- PVC 45 45 2 12 - 45 12 - 45 <br /> VW -4 3/4/1996 --- PVC 45 45 2 11 - 45 11 - 45 <br /> II VW-5 2/28/1996 --- PVC 45 45 2 11 - 45 11 - 45 <br /> VW-6 2/28/1996 PVC 45 45 2 14 - 45 14 - 45 <br /> VW -7�, 77/16/1999 PVC 80 45 2 14 - 45 12 - 45 <br /> Fi"rdlr r � c <br /> Notes : <br /> - No data <br /> TOC - Top of casing <br /> - Well destroyed <br /> Monitoring Wells MW-1 through MW-13 surveyed October 7 , 2002 , by California Geophysical Group Inc. <br /> Monitoring Wells MW- 14 and MW -18 surveyed October 8 , 2005, by California Geophysical Group Inc. <br /> Monitoring Wells MW-1713 and MW-18C surveyed October 31 , 2006 by Lee & Pierce Inc. <br /> Monitoring Wells MW- 11 MB and MW-208 surveyed January 20, 2004 by Geological Technics, Inc. <br /> APEX ENVIROTECH, INC. <br /> Page 1 of 1 BEN58.005 <br />