Laserfiche WebLink
COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Interoffice Memorandum <br />To: Janet Binns <br />From: Rob Zuber . r, <br />Date: December 9, 2016 <br />Subject: Yoast — review of 2015 AHR (surface water) <br />Note: Requests for information from Peabody are in bold italics. <br />GENERAL COMMENTS <br />Submittal of this AHR was very late. <br />The 2015 AHR covers October 1, 2014 to September 30, 2015. Data is provided for two water <br />years (beginning October 2013). Please explain the purpose of the extraneous information. <br />Peabody should check the Hydrological Monitoring Sites Map (Exhibit 7-1) and update it to <br />reflect current conditions. For example, spoil springs are not shown on the map. <br />SAMPLING LOCATIONS <br />The current surface water sites (receiving waters, NPDES points, and springs) in the PAP (Tab <br />15) include: <br />YSSF3, YSS2, YSGF5, YSG5, and WSSF3 (also downstream of Seneca IIW) <br />NPDES 10, NPDES 11, NPDES 12, NPDES 13, and NPDES 14 <br />YSSPGI, YSSPG2, YSSPG3, and YSSPG4. <br />These sites match the sites in the 2015 AHR, and Peabody is in compliance. <br />MONITORING FREQUENCY <br />There appears to be a discrepancy in Tab 15 of the PAP. Table 15-9 lists sampling frequencies <br />for surface water, but the footer of this page is dated prior to some of the revisions that altered <br />frequencies. Descriptions of revisions (e.g., TR -47 in 2010) are also presented in Tab 15. <br />For most outfalls and most parameters, the frequency of sampling of NPDES points (monthly) <br />meets the requirement in the PAP. However, the requirement for Outfalls 013 and 014 is weekly <br />for flow and pH, but it is not clear in the AHR (namely in the Extended Water Quality Report) <br />Cp�� <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us * *? <br />John W. Hickenlooper, Governor I Robert W. Randall, Executive Director I Virginia Brannon, Director r 1g76 4, <br />