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Ground Water (Alluvial) <br />Impacts to alluvial ground water are predicted to be insignificant (Page 7, Tab 15). Monitoring <br />indicates ranges of water quality pazameters consistent with historic values (Page 5, paragraph <br />3.3). <br />CWQCCR 31 <br />Basic standards and methodologies for surface water are defined in Colorado Water Quality <br />Control Commission (CWQCC) Regulation (CWQCCR) 31. Surface runoff from the site <br />discharges into Segment 13d (Yampa River) of the Upper Colorado River Basin (AHR, page 4). <br />CWQCCR 31.11 <br />Basic standards for surface water are defined in this regulation. <br />CWQCCR 33.0 <br />Classifications and numeric standazds for the Colorado River Basin aze in this regulation. The <br />classification of the reach of Dry Creek at the HG Loadout is aquatic life warm 2, recreation 1 a, <br />and agriculture. Wyoming Department of Environmental Quality pazameters are discussed in <br />the AHR as well. <br />CWQCCR 41 <br />Basic standards for ground water are contained in this regulation. Basic standards for ground <br />water aze addressed in Tab 7 of the PAP. An HGTI's opinion is that the Dry Creek alluvial <br />groundwater is of "Limited Use and Quality". See Appendix 7-2 of the PAP. One purpose of <br />alluvial well HGDAL4 monitoring is to validate this opinion. <br />There are a number of wells registered with the State engineer in or near the specified area. A <br />current review will determine if there are any domestic, agricultural, or other uses of groundwater <br />from the Dry Creek alluvium. <br />Colorado Discharge Permit System <br />See Surface Water above. CDPHE Permit COG-850000, Facility COG-850008, applies to the <br />site. There were no dischazges from the outfalls during the report period. <br />Page 5 of 5 pages, 2004 AHR Review, November 9, 2005 <br />