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Snowcap Coal Co. Inc WWTF Water Quality Assessment CO-0027146 <br />Figure A-1 <br />Study~A-re~a <br />rte. <br />~-~ b~ ~ ~ ~ USGS 90U 95500 <br />yam"--~do~er PlatAau C ee~ <br />USGS 09105000 ' <br />~ `" L <br />Outfa11016 ~ <br /> <br />~~~,~ <br />> i" )/r <br />~~ ~ • I <br />LEGEND <br />-State ®Stream Source: US Census TIGER <br />-county ~ Mi I i tary Area Mapping Service <br />® Lake/Pond/Ocean ® National Park <br />- Street Other Park <br />- Expressway s®- City <br />Highway - County <br />-Connector 0 1 2 3 4 5 6 mi <br />Scale 1:182932 gg <br />tavera~e--true scale depends on monito6 resolution0 ~ <br /> <br />The ratio of the low flow of the Colorado River to the Snowcap W WTF design flow (consisting of <br />the three mine water dischazges) is 258:1. The neazest upstream and downstream facilities had no <br />impact on the assimilative capacities available to the Snowcap W WTF. Analyses thus indicate that <br />assimilative capacities aze very lazge due to the lazge dilution available in the Colorado River. <br />Information used in this assessment includes data gathered from the Snowcap WWTF, the WQCD, <br />the Colorado Division of Water Resources (DWR), Riverwatch, the U.S. Environmental Protection <br />Agency (EPA), the U.S. Geological Survey (USGS), and communications with the local water <br />commissioner. The data used in the assessment consist of the best information available at the time <br />of preparation of this WQA package. <br />Appendix A <br />Page 2 of 12 <br />Last Revised 9/15/2003 <br />