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Colorado's 303(D) List of Impaired Waters

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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT WATER QUALITY CONTROL COMMISSION 5 CCR 1002-93 REGULATION #93 COLORADO'S SECTION 303(D) LIST OF IMPAIRED WATERS AND MONITORING AND EVALUATION LIST 93.1 Authority These regulations are promulgated pursuant to section 25-8-101 et seq C.R.S. as amended, and in particular, 25-8-202 (1) (a), (b), (i), (2) and (6); 25-8-203 and 25-8-204. 93.2 Purpose This regulation establishes Colorado’s Lists of Impaired Waters. These waters include Water- Quality-Limited Segments Requiring Total Maximum Daily Loads (“TMDLs”), impaired waters that do not require a TMDL, and Colorado’s Monitoring and Evaluation List: (1) The list of Water-Quality-Limited Segments Requiring TMDLs fulfills requirements of section 303(d) of the federal Clean Water Act which requires that states submit to the U.S. Environmental Protection Agency a list of those waters for which technology-based effluent limitations and other required controls are not stringent enough to implement water quality standards. These segments are included in Section 93.3 with parameters included in the Clean Water Section 303(d) Impairment column. (2) Colorado’s Monitoring and Evaluation List identifies water bodies where there is reason to suspect water quality problems, but there is also uncertainty regarding one or more factors, such as the representative nature of the data. Water bodies that are impaired, but it is unclear whether the cause of impairment is attributable to pollutants as opposed to pollution, are also placed on the Monitoring and Evaluation List. This Monitoring and Evaluation list is a state-only document that is not subject to EPA approval. These segments are included in Section 93.3 with parameters included in the Colorado’s Monitoring and Evaluation column. (3) The list of Water-Quality-Limited Segments Not Requiring a TMDL identifies segments where data is available that indicates that at least one classified use is not being supported, but a TMDL is not needed. These segments and parameters are included in Section 93.4. 93.3 Water Bodies Requiring TMDLs or Identified for Monitoring and Evaluation Only those segments where a Clean Water Section 303(d) Impairment has been determined require TMDLs. For these segments, TMDLs are only required for those parameters that are identified as impairments. 1 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) COAR Arkansas River Basin Fountain Creek and COARFO01a tributaries above Mainstem Fe(Trec), U E. coli, Mn, As, H/L/L Monument Creek Fountain Creek, COARFO02a Monument Creek to Hwy all Fe(Trec) E. coli H 47 Fountain Creek from E. coli (May- COARFO02b Hwy 47 to the Arkansas all H October) River Tributaries to Fountain Creek within the West National Forest or Air Aquatic Life COARFO03a Monument L Force Academy lands, (provisional) Creek from Monument Creek to the Arkansas River Bear Creek, and all tributaries, from the COARFO03b source to a point all Cu H immediately upstream of Gold Camp Road. All tribs to Fountain Creek, which are not on COARFO04 all E. coli H National Forest or Air Force Academy Land All tribs to Fountain Creek, which are not on COARFO04 Sand Creek Se L National Forest or Air Force Academy Land All tribs to Fountain Little Fountain Creek, which are not on Creek below COARFO04 Se National Forest or Air Deadman Force Academy Land Canyon Jimmy Camp Creek and unnamed tributary below COARFO05 all Fe(Trec) Fort Carson and surrounding marshlands 2 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) E. coli (May- Monument Creek from October), COARFO06 National Forest to all Temperature, H/M/L Fountain Creek Aquatic Life (provisional) Arkansas River, Fountain Creek to COARLA01a all E. coli H Colorado Canal headgate Arkansas River, Colorado Canal COARLA01b all Se, As, Mn L headgate to John Martin Reservoir Arkansas River, John COARLA01c Martin Reservoir to all Se, U, As, Mn H/H/L/L stateline All tributaries to the Arkansas River from the COARLA02a Colorado Canal all SO4, Mn headgate to the Colorado/Kansas border Mainstem of the Apishapa River, COARLA03a all E. coli Temperature H including tribs from source to I-25 Apishapa River, Timpas COARLA04a all Se, SO L Creek 4 Apishapa River, Timpas COARLA04a Apishapa River Mn Creek Upper North Fork, Middle Fork, South Fork COARLA05a all As L of the Purgatoire River, including all tributaries. Lower North, Middle and South Fork of the Purgutoire River, and COARLA05b all Temperature As L the mainstem from source to Trinidad Reservoir. 3 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) Lower North, Middle and South Fork of the Purgutoire River, and COARLA05b Long Canyon Mn the mainstem from source to Trinidad Reservoir. All Tributaries to the Purgatoire River from Apache Aquatic Life COARLA06a M the source to Interstate Canyon (provisional) 25 All Tributaries to the Purgatoire River from COARLA06a Reilly Canyon Temperature the source to Interstate 25 All Tributaries to the Purgatoire River from COARLA06a Sarcillo Canyon Temperature the source to Interstate 25 Wet Canyon and all tributaries from the COARLA06b all Temperature source to the confluence with the Purgatoire River Purgatoire River, I-25 to Sediment, E. COARLA07 all Arkansas River coli Mainstem of Adobe COARLA09a Creek and Gageby all Se, As L/H Creek… Mainstem of Adobe COARLA09a Creek and Gageby Horse Creek Mn, SO4 Fe(Trec) H Creek… Mainstem of Adobe COARLA09a Creek and Gageby Adobe Creek Fe(Trec) E. coli H Creek… Apache Creek, Breckenridge Creek, Little Horse Creek, Bob COARLA09b all Mn, SO Se L Creek, Wildhorse Creek, 4 Wolf Creek, Big Sandy Creek, Rule Creek… 4 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) Apache Creek, Horse Creek, Breckinridge Creek, Little Horse Big Sandy COARLA09b Fe(Trec) M Creek, Bob Creek, Big Creek Sandy Creek, Rule Creek… Two Buttes Res., Two Buttes Pond, Hasty Lake, Holbrook Res., Burchfield Lake, Nee- Adobe Creek COARLA10 Skah (Queens) Res., As Se L Res Adobe Creek Res., Neeso Pah Res., Nee Nosha Res., Nee Gronda Res. Two Buttes Res., Two Buttes Pond, Hasty Lake, Holbrook Res., Burchfield Lake, Nee- Nee Gronda COARLA10 Skah (Queens) Res., Se L Res Adobe Creek Res., Neeso Pah Res., Nee Nosha Res., Nee Gronda Res. COARLA11 John Martin Reservoir all Se L Lake Henry, Lake COARLA12 Lake Henry Fe(Trec) Se L Meredith Lake Henry, Lake COARLA12 Lake Meredith Se L Meredith Trinidad Reservoir, Long Aquatic Life Use Trinidad COARLA15 Canyon Reservoir, and (Hg Fish Tissue), H Reservoir Lake Dorothey D.O. (Temperature) Mainstem of Arkansas River from the outlet of COARMA02 all Temperature H Pueblo Reservoir to Dry Creek arroyo 5 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) Mainstem of the Arkansas Mainstem of Arkansas River from River from the outlet of COARMA02 Pueblo Mn L Pueblo Reservoir to Dry Reservoir to Creek Arroyo Blue Ribbon Creek Arkansas River from COARMA03 Wildhorse Creek to all Se, As H/L Fountain Creek COARMA04a Wildhorse Creek all NO2 E. coli H Mainstem of the Saint Charles River from a point immediately above the CF&I diversion canal COARMA06a all Mn, SO near Burnt Mill to a point 4 immediately upstream of the confluence with Edson Arroyo. Mainstem of the Saint Charles River from the COARMA06b confluence with Edson all SO4 Mn L Arroyo to the confluence with the Arkansas River. Greenhorn Creek, including all tributaries, from San Isabel National Forest boundary to COARMA07b all Temperature Greenhorn Highline Diversion Dam; Graneros Creek; North Muddy Creek Greenhorn Creek, including tributaries, COARMA09 from Greenhorn Highline all Mn As L Diversion Dam to the St. Charles River COARMA10 Sixmile Creek all Fe(Trec), Se L 6 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) Huerfano River, including all tributaries, As, Mn, COARMA11b from 570 Road near all Fe(Trec) Malachite to Highway 69 at Badito Huerfano River, from COARMA12 Muddy Creek to the all Se L Arkansas River Cucharas River, from Walsenburg PWS COARMA14 all Fe(Trec) H diversion to the outlet of Cucharas Reservoir COARMA18a Boggs Creek all Mn, SO4 Se, Zn, U H Horseshoe Lake, Martin Lake (Ohem Lake) and Horseshoe Aquatic Life Use COARMA26 H Walsenburg Lower Town Lake (Hg Fish Tissue) Lake. Aquatic Life Use COARMA27 Teller Reservoir all (Hg Fish Tissue) Mainstem of the Arkansas River from the COARUA02c confluence with the Lake all As H Fork to the confluence with Lake Creek Mainstem of the Arkansas River from the COARUA04a Chaffee/Fremont County all Temperature Cu H Line to a point immediately above Lake Fork All tributaries to the below Arkansas River from the Sugarloaf Dam Aquatic Life, COARUA05 source to immediately to the Zn H Cd, Mn below the confluence confluence with with Browns Creek the Arkansas River 7 Colorado’s Clean Water Act Monitoring & 303(d) WBID Segment Description Portion Section 303(d) Evaluation Priority Impairment Parameter(s) All tributaries to the Arkansas River from the As, Cd, Cu, Zn H COARUA05 source to immediately Colorado Gulch Ag, Pb below the confluence Mn, Fe(dis) L with Browns Creek Mainstem of Lake Creek and all tributaries from COARUA10 all pH, D.O. H source to Arkansas River Mainstem of Chalk Creek from the source to COARUA12a all Cd H the confluence with the Arkansas River.
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