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miles easterly to the intersection with Routt County Road 51B 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 /> II. Support Facilities - Rule 4.04 <br /> Information on mine support facilities is found in Volume 2, Tab 12 of the PAP. <br /> A summary is found in the Summary Section of this document under <br /> "Description of Operations and Reclamation Plan." Specific findings for Rule <br /> 4.04 are not applicable. <br /> III. Hydrologic Balance - Rule 4.05 <br /> Volume 3, Tabs 13, 14 and 15 of the HGL 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, HGL 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 PAP. <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 /> Discharges from these ponds are monitored to verify compliance with water <br /> quality standards and effluent limitations (4.05.2(2)). <br /> 2. The Division has approved sixteen small areas (SAE's)to be exempted from the <br /> use of sediment ponds due to the limited size of areas and due to the fact that <br /> ponds and treatment facilities are not necessary for the drainage to meet the <br /> effluent limitations of Rule 4.05.2 and applicable State and Federal water quality <br /> 17 <br />