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°F`` COLORADO <br />��; •' Department of Public <br />Health b Environment <br />Water Quality Assessment <br />*Water supply <br />As shown in Table A -11d, there are no new or increased impacts to the receiving stream based on the new <br />WQBELS. The AD evaluation for these parameters is complete, and the WQBELS are the final result of this <br />WQA. Note that the dissolved manganese aquatic life NIL is greater than the WQBEL calculated for the water <br />supply standard in Table A -8e. The water supply WQBEL will apply as it is more stringent. <br />Table A -11e <br />Table A -11d <br />Determination of New or Increased Impacts at Outfall 021 Discharge to the Yampa <br />River <br />Determination of New or Increased Impacts at Outfall 020 <br />Discharge to the Yampa <br />River <br />Sept <br />Sept <br />2000 <br />Sept 2000 <br />2000 <br />2000 <br />New or <br />Pollutant <br />New <br />New or <br />Pollutant <br />Permit <br />Permit <br />NIL <br />New <br />WQBEL <br />Increased <br />Limit/ <br />Load <br />Impact <br />WQBEL <br />Load <br />Imp act <br />Implicit <br />(lbs/day) <br />(lbs/day) <br />NIL <br />Aquatic Life Parameters <br />Fe, TR (pg/t) 3000 <br />Aquatic Life Parameters <br />1000 18 <br />No <br />Fe, TR (Ng/l) <br />3000 <br />156 <br />3000 <br />1000 <br />18 <br />No <br />Mn, Dis (pg/1) <br />88 <br />4.6 <br />88 <br />50" <br />0.42 <br />No <br />Human Health Parameters <br />As, TR (pg/1) <br />1 <br />0.052 1 <br />0.13 <br />0.014 <br />No <br />*Water supply <br />As shown in Table A -11d, there are no new or increased impacts to the receiving stream based on the new <br />WQBELS. The AD evaluation for these parameters is complete, and the WQBELS are the final result of this <br />WQA. Note that the dissolved manganese aquatic life NIL is greater than the WQBEL calculated for the water <br />supply standard in Table A -8e. The water supply WQBEL will apply as it is more stringent. <br />As shown in Table A -11e, there are no new or increased impacts to the receiving stream based on the new <br />WQBELS for total recoverable iron. The AD evaluation for this parameter is complete, and the WQBELS are <br />the final result of this WQA. <br />Pae 32 of 40 . <br />4300 Cherry Creek Drive S., Denver, CO 80246-1530 303-692-2000 www.colorado.gov/cdphe/wqcd I ®� <br />Table A -11e <br />Determination of New or Increased Impacts at Outfall 021 Discharge to the Yampa <br />River <br />Sept <br />2000 <br />Sept 2000 <br />New <br />New or <br />Pollutant <br />Permit <br />Permit <br />NIL <br />New <br />WQBEL <br />Increased <br />Limit/ <br />Load <br />WQBEL <br />Load <br />Impact <br />Implicit <br />(lbs/day) <br />(lbs/day) <br />NIL <br />Aquatic Life Parameters <br />Fe, TR (pg/t) 3000 <br />52 1 3000 <br />1000 18 <br />No <br />As shown in Table A -11e, there are no new or increased impacts to the receiving stream based on the new <br />WQBELS for total recoverable iron. The AD evaluation for this parameter is complete, and the WQBELS are <br />the final result of this WQA. <br />Pae 32 of 40 . <br />4300 Cherry Creek Drive S., Denver, CO 80246-1530 303-692-2000 www.colorado.gov/cdphe/wqcd I ®� <br />