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Table 1 <br /> Grab-Groundwater Sampling Plan <br /> Rough and Ready Island <br /> Stockton,California <br /> Approximate Lab <br /> Boring Sample Elevation Target Sample Depth Analysis Data Gap <br /> Identification Area ft MSL ft b s VOCs' Number Rationale <br /> W-323,W-324,and W-325 unable to be found during <br /> -10 10-15 X 13 sampling event.Collect sample to evaluate VOC <br /> GGW-18 Landfill Area concentrations in area <br /> W-323,W-324,and W-325 unable to be found during <br /> -35 35-40 X 13 sampling event.Collect sample to evaluate VOC <br /> concentrations in area <br /> -15 15-20 X <br /> GGW-19 Landfill Area -40 4045 X 14 Requested by regultory agencies <br /> -60 60-65 X <br /> -15 15-20 X <br /> GGW-20 Landfill Area -40 40-45 X 14 Requested by regultory agencies <br /> -60 60-65 X <br /> GGW-21 Landfill Are -55 55-60 X 14 Requested by regultory agencies <br /> -75 75-80 X <br /> GGW-22 Landfill Area -775- 5 75-8 55-60 <br /> X 0 55- X 14 Requested by regultory agencies <br /> GGW-23 Landfill Area -55 55-60 X 14 Requested by regultory agencies <br /> -75 75-80 X <br /> GGW-24 Landfill Area -55 55-60 X 14 Requested by regultory agencies <br /> -75 75-80 X <br /> Notes: <br /> 1.VOCs by United States Environmental Protection Agency(U.S.EPA)method 8260B. <br /> 2.Dioxins by U.S.EPA Method 1613/SW 8280/8290 <br /> bgs=below ground surface <br /> ft=feet <br /> MCL=maximum contaminant limit <br /> MSL=relative to mean sea level <br /> VOC=volatile organic compound <br /> 3 of 3 <br />