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Page 1 of 1 <br />Musick, Jason <br />From: Kaldenbach, Tom <br />Sent: Friday, April 11, 2008 3:44 PM <br />To: Musick, Jason <br />Cc: Hernandez, Daniel <br />Subject: RE: Deserado TR65 Adequacy <br />Jason, <br />I have reviewed responses #4 and #5 and conclude they are adequate for the following reasons. <br />Comment #4 -. It is reasonable to not sample for those constituents which do not have a reasonable potential of <br />being in coal gob leachate by analogy with CWCD's policy for surface water that is described in "Determination of <br />the Requirements to Include Water Quality Standards-Based Limits in CDPS Permits Based on Reasonable <br />Potential", February 2003. <br />Comment #5 - Hardness is not in Tables 1 - 4 of the Basic Standards for ground water. TDS sampling (already <br />required) would indirectly indicate an increase in ground water hardness. <br />Tom <br />From: Musick, Jason <br />Sent: Wednesday, April 09, 2008 7:49 AM <br />To: Kaldenbach, Tom <br />Cc: Hernandez, Daniel <br />Subject: Deserado TR65 Adequacy <br />Tom, <br />I have received Desperado's responses to our adequacy concerns for TR65. Adequacy response #4 and #5 is in <br />reference to groundwater quality standards applicable to the point of compliance. Would you mind reviewing <br />Deserado's responses to determine if they will be acceptable? The proposed decision has been extended until <br />4/18/08. <br />Thanks, <br />Jason <br />4/14/2008