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Table 1 <br /> Monitoring Well Sampling, Destructions and Replacements <br /> Rough and Ready Island <br /> Stockton, California <br /> Most Recent Sample Analytical Data <br /> Damaged Well Proposed <br /> Monitoring Well Current Monitoring Well Unable To Be Other compounds with Proposed Replacement <br /> Site Sampled for Screen Interval (ft bgs) Cis-1 2-DCE Vinyl Chloride exceedances of DTSC Tap Proposed Replacement <br /> Cluster Wells to be Sample Date Monitoring Well Screen <br /> VOCs before (ug/L) (ug/L) water or MCL screening Monitoring Well <br /> Sampled 1 Interval (feet bgs) <br /> Destruction criteria (excluding Arsenic) <br /> W-197 5 to 15 5/16/2006 <0.04 <0.1 none <br /> 28 IAS-12 W-026 18.5 to 23.5 5/16/2006 <0.2 <0.2 none None NA <br /> W-042 36.5 to 39 5/16/2006 <0.2 <0.2 none <br /> W-158 X 10 to 20 5/16/2006 <0.2 <0.2 none <br /> 29 Site 37 None NA <br /> W-160 X 23 to 33 5/16/2006 <0.2 <0.2 none <br /> W-323 X 5 to 10 9/10/2015 2.1 4.7 none <br /> 10-20 (screen will be adjusted <br /> New Monitoring Well to first groundwater <br /> encountered) <br /> 30 IAS-11 W-324 X 17 to 22 9/10/2015 2.4 <0.2 none <br /> W-325 X 31 to 36 9/10/2015 370 7.9 none New Monitoring Well 30-40 <br /> W-182 X 5 to 10 5/16/2006 <0.2 <0.2 Nickel -0.14 mg/L <br /> 31 IAS-11 W-033 X 16.0 to 18.5 5/16/2006 <0.2 <0.2 none New Monitoring Well 30-40 <br /> W-045 X 35 to 40 5/16/2006 <0.2 <0.2 none <br /> W-234 X 11 to 16 5/26/1999a <1a <0.5b none <br /> 4/25/2000b <br /> 32 Site 7 None NA <br /> W-235 X 20.5 to 25.5 5/26/1999a <1a <0.5b none <br /> 4/10/2000b <br /> W-183 X 5 to 10 9/17/2014 <0.1 <0.1 none <br /> 33 IAS-11 W-189 X 16 to 21 8/23/2019 <0.1 <0.22 none New Monitoring Well 30-40 <br /> W-084 X 36 to 46 9/16/2014 <0.1 <0.1 none <br /> 34 IAS-11 W-326 X 17 to 22 9/16/2014 <0.1 <0.1 none W-083 (Existing Well) 39-49 <br /> W-058 X 5 to 9 9/14/2015 1.7 <0.1 none 8-18 (screen will be adusted to <br /> New Monitoring Well first groundwater <br /> W-190 15 to 20 9/17/2014 <0.1 <0.1 none <br /> encountered) <br /> 35 Site 38 9/17/2014a <br /> W-082 X 38 to 48 <0.1a <0.1a Bariumb- 1.2 mg/L <br /> 8/19/2009 b <br /> W-015 38.5 to 48.5 9/17/2014a <0.1a <0.1a Bariumb- 1.3 mg/L New Monitoring Well 30-40 <br /> 8/21/2009 <br /> W-085 39 to 49 9/14/2015 0.5 0.5 Barium - 1.4 mg/L <br />