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Reporting Date <br />5/5/00 <br />7/17/00 <br />10/12/00 <br />1 /28/01 <br />4/27/01 <br />Table value standard -drinking water <br />Table value standard -agriculture <br /> Values <br />pH Cond Se TI <br />(s.u.) (uS/cm) (mg/L) (mg/L) <br />7.93 2520 0.004 BDL <br />8.00 2520 .0.005 BDL <br />8.00 2470 BDL BDL <br />8.03 2720 BDL BDL <br />8.00 2630 BDL BDL <br />6.5-8.5 n/a 0.05 0.002 <br />6.5-8.5 n/a 0.02 n/a <br />Based on the above I would recommend that NPL's be established at the most _______ <br />restrictive water quality standards. In this case, the most stringent use standards <br />would be agriculture. <br />Proposed NPL's <br />pH <br />Conductivity <br />Se <br />TI <br />g,S <br />6.5-std. units <br />Measure and report <br />0.02 mg/L <br />0.002 mg/L <br />As provided previously, monitoring should be reported twice yearly. <br />It is recommended that more frequent monitoring be conducted by the company <br />for pH and conductivity. This would have to be voluntary as the Division has <br />approved twice yearly sampling. In the event pH or conductivity increases, the <br />division should be notified and more frequent monitoring for possible metal <br />contaminants should be conducted and reported. <br />Cc: Bruce Humphries <br />Carl Mount <br />