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The majority of the ground and surface water monitoring conducted by HGCC was <br /> performed after the last of the coal stockpiled at the Loadout facility was shipped out in <br /> 1986. From 1986 through 1992, the Loadout was inactive and all coal storage, handling, and <br /> shipping activities were discontinued. Therefore, the data collected from 1987 through 1992 <br /> was only minimally influenced by the small amount of coal remaining on site (coal stockpile <br /> leachate) or activities associated with the Loadout, and may be considered to reflect natural <br /> conditions. During 1994 and 1995, HGTI shipped approximately 170,000 tons of coal in 17 <br /> trains. <br /> HGTI abandoned monitor wells HGDALI and HGDAL2 in September 2007. The wells <br /> were abandoned in accordance to the rules of the Colorado Division of Water Resources and <br /> Rule 4.07.3(3) of the Rules and Regulations of the Mined Land Reclamation Board for Coal <br /> Mining. Abandonment reports are presented in Tab 7. <br /> Monitoring Site IDs. Different monitoring site name identifiers have been established for all <br /> historic monitoring sites, as well as the new stream and alluvial well monitoring sites. The <br /> following list provides the names (IDs) utilized by HGTI and any corresponding historic <br /> names used. <br /> Historic Names or Descriptions HGTI Site IDs <br /> Upstream Surface Water Monitoring Site HGSD1 <br /> Downstream Surface Water Monitoring Site HGSD2 <br /> "Replacement"Downstream Surface Water Monitoring Site HGSD3 <br /> Upgradient Shallow HGDALI (abandoned) <br /> Downgradient Shallow HGDAL2 (abandoned) <br /> "Replacement"Downgradient Alluvial Well HGDAL3 <br /> "New"Upgradient Alluvial Well HGDAL4 <br /> CDPS Outfall OOIA(Truck Loop Pond) Truck Loop Pond <br /> CDPS Outfall 002A(Rail Loop Pond) Rail Loop Pond <br /> Figure 13-1, Monitoring Site Location Map depicts the locations of all monitor sites and <br /> includes HGTI's ID designations. <br /> Operational Monitoring Program <br /> Monitoring Rationale and Methodology_. Considerable Discussion occurred between HGTI <br /> and CDMG staff regarding monitoring approaches, sites, and frequencies in <br /> TR-10 5 Revised 02/13 <br />