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COLORADO <br />, • pTM�;,;•: Department of Public <br />Health b Environment <br />Water Quality Assessment <br />*water supply <br />As shown in Table A -11b, 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. <br />Note that the dissolved manganese aquatic life NIL is greater than the WQBEL calculated for the water supply <br />standard in Table A -8e. The water supply WQBEL will apply as it is more stringent. <br />Table A -11c <br />Table A -11b <br />Determination of New or Increased Impacts at Outfall 017 Discharge to the Yampa River <br />Determination of New or Increased Impacts at Outfall 011 <br />Discharge to the Yampa <br />River <br />Sept <br />Sept <br />PNew <br />2000 <br />Oit <br />2000 <br />New or <br />Pollutant <br />New <br />New or <br />Pollutant <br />Perm <br />Permit <br />NIL <br />New <br />WQBEL <br />Increased <br />Limit/ <br />Load <br />Impact <br />WQBEL <br />Load <br />Impact <br />Implicit <br />(lbs/day) <br />(lbs/day) <br />Aquatic Life Parameters <br />Aquatic Life Parameters <br />34 1 3000 <br />1000 <br />8.3 <br />Fe, TR (pg/1) <br />3000 <br />102 <br />3000 <br />1000 <br />21 <br />No <br />Mn, Dis (pg/1) <br />210 <br />7.1 <br />210 <br />50' <br />0.42 <br />No <br />Human Health Parameters <br />As, TR (pg/1) <br />1.7 <br />0.058 1 1.7 <br />0.13 <br />0.014 <br />No <br />*water supply <br />As shown in Table A -11b, 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. <br />Note that the dissolved manganese aquatic life NIL is greater than the WQBEL calculated for the water supply <br />standard in Table A -8e. The water supply WQBEL will apply as it is more stringent. <br />As shown in Table A -11c, there are no new or increased impacts to the receiving stream based on the new <br />WQBELS for total recoverable arsenic and total recoverable iron. The AD evaluation for these parameters is <br />complete, and the WQBELs are the final result of this WQA. <br />Paee 31 of 40 <br />4300 Cherry Creek Drive S., Denver, CO 80246-1530 303-692-2000 www.colorado.goy/cdphe/wgcd I <br />Table A -11c <br />Determination of New or Increased Impacts at Outfall 017 Discharge to the Yampa River <br />Sept <br />Sept <br />PNew <br />2000 <br />New or <br />Pollutant <br />errmiit <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/l) 3000 <br />34 1 3000 <br />1000 <br />8.3 <br />No <br />Human Health Parameters <br />As, TR (pg/1) 7 <br />0.08 1 7 <br />0.13 <br />0.014 <br />No <br />As shown in Table A -11c, there are no new or increased impacts to the receiving stream based on the new <br />WQBELS for total recoverable arsenic and total recoverable iron. The AD evaluation for these parameters is <br />complete, and the WQBELs are the final result of this WQA. <br />Paee 31 of 40 <br />4300 Cherry Creek Drive S., Denver, CO 80246-1530 303-692-2000 www.colorado.goy/cdphe/wgcd I <br />