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<br />Battle Mountain Gold <br />NOPV Abatement Requirements <br />page 8 <br />Division requested that BMG verify the accuracy of their water quality <br />monitoring analysis. In response, BMG completed comparative a alyses of <br />split samples using two independent EPA certified laboratories and their <br />own San Luis facilities. The results of these analyses demonstrated <br />significant discrepency between the three independent analyses <br />BMG, in order to ensure accurate monitoring of water quality, hall <br />complete a comprehensive evaluation of the procedures used for sample <br />collection, preservation, transportation, analysis and reporti g. At a <br />minimum, this evaluation shall include consideration of legal 'chain of <br />custody", prevention of contamination during sampling, prepara ion and <br />preservation of samples, appropriate transportation of samples to the <br />laboratory, "quality assurance/quality control" (QA/QC> method logy <br />within the laboratory, split sampling redundancy and verificat on of <br />monitoring accuracy. This evaluation, including a detailed sa piing and <br />analysis protocol, shall be submitted to the Division as a tec nical <br />revision no later than Monday, May 4, 1992. <br />Status: Satisfied - BMG completed the split sample analyses a d submitted <br />the results to the Division on April 21, 1992. <br />- The requirements for protocol development and permit <br />revision were only advanced by the Divisi n on <br />April 21, 1992. <br />- BMG has verbally committed to protocol modification <br />on April 22, 1992. <br />MLRB Amendment: The protocol shall include the sampling of the three <br />lysimeter sets installed in response to Water Court requirements. <br />The protocol shall specify monthly reporting of results t the <br />Division. A third party, or parties approved by the Division, <br />shall complete collection and analysis of water quality s mples, at <br />BMG's expense. <br />Copies of the detailed sampling and analysis protocol sha 1 be <br />provided to interested local parties in San Luis. The Di ision <br />shall allow the interested local parties to submit commen s for the <br />Division's consideration until May 13th. <br />Deadlines: The evaluation, including a detailed sampling and a alysis <br />protocol, shall be submitted to the Division as a t chnical <br />revision no later than Monday, May 4, 1992. In com Hance <br />with the Board amendment, copies of the evaluation hall be <br />provided by BMG to all other parties to the NOPV He ring. <br />JP/jP <br />Doc No: 2380E <br />