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The Tie - Across Haul Road (TAHR) was designed and constructed during 1989 in <br />preparation for coal haulage in 1990 from the Seneca II -W Mine area to the Hayden <br />Station Power Plant. The TAHR was originally approved as part of the Seneca II -W <br />Permit No. C- 1982 -057 and was transferred to HGT as a part of PR1. <br />The TAHR begins at the junction of the former location of HGLF -HR1 haul road <br />(station 25 +90) located at the original entrance gate and proceeds approximately 4.1 <br />miles easterly to the intersection with Routt County Road 5 I on the coal haul road <br />entrance to the Hayden Station. <br />The acreage of the TAHR is separate from the backfill and grading schedule and <br />reclamation schedule. The road is currently approved to remain in place until year <br />2030. <br />IL Support Facilities - Rule 4.04 <br />Information on mine support facilities is found in Volume 2, Tab 12 of the <br />permit application. A summary is found in the Summary Section of this <br />document under "Description of Operations and Reclamation Plan." Specific <br />findings for Rule 4.04 are not applicable. <br />III. Hydrologic Balance - Rule 4.05 <br />Volume 3, Tabs 13, 14 and 15 of the HGT permit application includes a hydrologic <br />monitoring program, a description of how the hydrologic balance will be protected and <br />an assessment of the probable hydrologic consequences of the proposed operation. <br />Each year, HGT assesses the ongoing impacts to the hydrologic system in its annual <br />hydrologic report. The probable hydrologic consequences as set forth in Volume 3, <br />Tab 15 are summarized below. The small area exemption sites are listed in Volume <br />12, Tab 12 of the permit application. <br />A. Water Quality Standards and Effluent Limitations <br />Receiving stream standards for the Yampa River and its tributaries have been set by <br />the Colorado Department of Health in their publication, "Classification and Numeric <br />Standards for Upper Colorado River Basin and North Platte River (Planning <br />Region) ". Dry Creek is within segment 12 of the Upper Colorado River sub -basin <br />and basin. Colorado Department of Health NPDES (National Pollution and <br />Discharge and Elimination System) limitations on discharge and the Division's <br />standards for determining material damage to the hydrologic balance ( "Division <br />Procedures for the Assessment of Material Damage with Respect to Alluvial Valley <br />Floors, the Cumulative Hydrologic Impact Assessment and Subsidence at Coal <br />Mines ") are based in part on these standards. <br />1. Most disturbed area drainage passes through one of two existing sediment ponds <br />(some disturbed area drainage passes through SAE's, described in # 2 below). <br />Hayden Gulch 21 February 11, 2014 <br />