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• <br />Review of CC&V Response to Commitment No. 36 <br />Memo to B. Keffelew, June 27, 1994 <br />Page 3 <br /> <br />Procedure. These were compared to the applicable standards for surface water. It is not known <br />whether the list of surface water standards provided by CC&V is accurate. <br />On the assumption that Arequa Gulch water flowing through the underdrains will be regulated <br />as both surface and groundwater, the list of analytes provided with the June 19, 1994, <br />Commitment Number "36" response, is not complete. Also, some of the detection limits are <br />too high for applicable standazds. In addition, some of the measured parameters exceed the <br />listed surface water standards. <br />A list of applicable surface water standards for aquatic life, agricultural, and drinking water uses <br />is provided from the WQCC Standards and methodologies for Surface Water. Although this list <br />is presumed to be current, CC&V is advised to confirm it with the WQCD. Metals and <br />parameters that are regulated, but which were not analyzed include, at a minirnum: <br />Antimony <br />Beryllium <br />Chromium III <br />Chromium VI <br />Iron (total recoverable) <br />Nickel <br />Thallium <br />Uranium <br />Hardness <br />Elements that were analyzed using detection limits which are too high for regulatory purposes <br />include, at a minimum: <br />Mercury <br />Silver <br />Elements which exceed the surface water standards include the following, at a minimum: <br />Sample Metals exceeding S.W. standards <br />CPR-10 25-50 As Pb <br />CPR-12 0-25 As Cu Pb <br />CPR-12 25-50 Cu <br />CPR-13 25-50 Se <br />CPR-14 0-25 Pb Se <br />CPR-14 25-50 Se <br />Although the list of analytes for surface water includes, in pazticulaz, Be, Cr III, Cr VI, Ni, and <br />U, these were not analyzed under the MWMP testing program. Presumably, this is because they <br />