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Kerr (Marr) Mine — 2011 Annual Hydrology Report <br />The Loadout site will continue to be monitored as required until monitoring requirements are terminated <br />or final bond release is approved.. <br />3.0 MONITORING AND ANALYSES <br />Water monitoring requirements during the 2011 water year (Oct. 2010 through Sept. 2011) were <br />superseded by TR -23 which was approved October 15, 2007 and monitoring was terminated at <br />the Kerr mine site. Ground water and surface water monitoring continues at the Loadout facilities <br />until release of that site becomes appropriate and final bond release is approved. <br />All field data and sample collection for the water year was conducted under the direction of James <br />Mossman for Kerr. All sample analyses were performed by ACZ Laboratories, Inc. of Steamboat <br />Springs, Colorado. Discharge permit COG 850036 for the Loadout site pertaining to surface water <br />requires a monitoring frequency of two (2) days per month. <br />Locations of the monitoring stations and wells pertaining to the Loadout site are shown on Map 2, <br />Loadout Area Monitoring Stations. Given that water monitoring at the Kerr mine site area has been <br />terminated (per TR -23), Map 1, Mine Area Monitoring Stations is not included with this 2011 AHR. <br />4.0 LOADOUT AREA ALLUVIAL GROUNDWATER <br />Two alluvial wells (AP -1 and AP -2) were monitored for field measurements during the water year <br />October, 2010 through September 2011 with the exception of winter months when the wells are frozen <br />over. Detail field data is listed from Oct, 2001 to Oct 2011 in the table "Monitor Wells — Loadout Site" <br />(Wells AP -1 & AP -2) located in Appendix A. <br />Water quality samples were collected and analyzed on a quarterly basis during the Water Year. <br />Samples were collected October 2010 and in April and July, 2011. First quarter periods are mid - winter <br />and monitor wells are frozen. As of January 1999, the parameter list for alluvial well sample analysis <br />was reduced to include only major elements and no trace metals. The individual laboratory analyses <br />are presented in Appendix C. <br />The mean field and laboratory historical measurements are presented in Tables 1 and 2, AP -1 and AP- <br />2 Historic Loadout Area Alluvial Water Quality Data. These general water quality indicators remained <br />consistent (with historic values) during this monitoring period for both wells. Some fluctuation is <br />indicated in the Carbonate (as CaCO3) data years 2008 & 2009 but levels appear to be returning to <br />those of earlier sample years. <br />