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 ADOPTED: March 17, 2004 EFFECTIVE: M a y 3 , 2004 ADOPTED: March 14, 2006 EFFECTIVE: April 30, 2006 ADOPTED: March 11, 2008 EFFECTIVE: April 30, 2008 ADOPTED: March 9, 2010 EFFECTIVE: April 30, 2010 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 List of Water-Quality-Limited Segments Requiring Total Maximum Daily Loads (“TMDLs”) 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. (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. 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. Listings marked with an asterisk (*) are carryover from the 1998 303(d) List. Consequently they are all high priority. Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment COAR Arkansas River Basin 1 Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment Fountain Creek and tributaries COARFO01a all E. coli, Se H/L above Monument Creek Fountain Creek, Monument Creek COARFO02a all E. coli H to Hwy 47 Fountain Creek from Hwy 47 to Se, E. coli COARFO02b all L/H the Arkansas River (May-October) All tribs to Fountain Creek, which COARFO04 are not on National Forest or Air all E. coli H Force Academy Land Below Mesa Road (for Se Monument Creek from National Se, E. coli COARFO06 only) L/H Forest to Fountain Creek (May-October) All (for E. coli) Willow Aquatic Life Pikeview Reservoir, Willow Springs COARFO07a Use (PCE M Springs Ponds #1 and #2 Ponds #1 & FCA) #2 Arkansas River, Fountain Creek to COARLA01a all Se, SO L Colorado Canal headgate 4 Arkansas River, Colorado Canal COARLA01b all Se L headgate to John Martin Reservoir Arkansas River, John Martin COARLA01c all Se, U L Reservoir to stateline Apishapa River, Timpas Creek, COARLA04 all Se L Lorencito Canyon Apishapa River, Timpas Creek, COARLA04 Timpas Creek Fe(Trec) H Lorencito Canyon Purgatoire River from source to I- COARLA05a all Se L 25 2 Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment Aquatic Life Trinidad Reservoir, Long Canyon Trinidad Use (Hg FCA), COARLA05b H Reservoir, and Lake Dorothey Reservoir D.O. (temperature) Purgatoire River, I-25 to Arkansas COARLA07 all sediment Se L River Mainstem of Adobe Creek and COARLA09a all Se L Gageby Creek… Mainstem of Adobe Creek and COARLA09a Horse Creek Fe(Trec) H Gageby Creek… Mainstem of Adobe Creek and COARLA09a Adobe Creek E. coli H Gageby Creek… Apache Creek, Breckenridge Creek, Little Horse Creek, Bob COARLA09b all Se L Creek, Wildhorse Creek, Wolf Creek, Big Sandy Creek Fe(Trec), Se Rule Creek, Muddy Creek, Zn As specified COARLA09c Caddoa Creek, Clay Creek, Cat L to right (Chicosa Creek… (Rule Creek) Creek) Two Buttes Res., Two Buttes Pond, Hasty Lake, Holbrook Res., Adobe Creek Burchfield Lake, Nee-Skah COARLA10 Res., Nee Se L (Queens) Res., Adobe Creek Gronda Res Res., Neeso Pah Res., Nee Nosha Res., Nee Gronda Res. COARLA11 John Martin Reservoir all Se L COARLA12 Lake Henry, Lake Meredith all Se L COARMA04a Wildhorse Creek all NO2 E. coli H St. Charles River and tributaries, COARMA06 all U Se L CF&I diversion to Arkansas River 3 Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment Greenhorn Creek, including all tributiaries, from source to COARMA07 Greenhorn Highline Diversion all Cu, Zn Dam; Graneros Creek; North Muddy Creek Greenhorn Creek, including tributaries, from Greenhorn COARMA09 all Se Highline Diversion Dam to the St. Charles River COARMA10 Sixmile Creek all Fe(Trec), Se L Huerfano River, from Muddy COARMA12 all Se L Creek to the Arkansas River Cucharas River, from Walsenburg COARMA14 P W S d i v ersion to the outlet of all Se L Cucharas Reservoir Huajatolla Reservoir, Diagre Reservoir, Walsenburg Lower Horseshoe Aquatic Life COARMA16 H Town Lake, Horseshoe Lake and Lake Use (Hg FCA) Martin Lake (Ohem Lake) COARMA18a Boggs Creek all Se, Zn, U H Iowa Gulch from ASARCO water COARUA08b supply intake to Paddock #1 Ditch all Cd, Pb, Zn M (Iowa Ditch) Mainstem of Lake Creek and all all, excluding tributaries, lakes and reservoirs COARUA10 Twin Lakes pH, D.O., Cu H from source to Arkansas River Reservoir (including Twin Lakes Reservoir) Mainstem of Lake Creek and all tributaries, lakes and reservoirs Twin Lakes COARUA10 from source to Arkansas River Reservoir Cu (including Twin Lakes Reservoir) Tributaries to the Arkansas River, Teller Aquatic Life COARUA14b from Pueblo Reservoir to Colorado Reservoir Use (Hg FCA) Canal headgate 4 Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment Grape Creek including De Weese Res., Texas, Badger, Hayden, De Weese COARUA15 Hamilton, Stout and Big D.O. H Reservoir Cottonwood Creeks, Newland Creek North Fork Wilson Creek Fourmile Creek and tributaries, COARUA20 below As, Cu Cripple Creek to Arkansas River Independence Mine Mainstem of Eightmile Creek, including all tributaries, wetlands, Aquatic Life Brush Hollow COARUA27 lake and reservoirs, from the pH Use (Hg FCA), H Reservoir source to the mouth of Phantom D.O. Canyon; Brush Hollow Reservoir COGU Gunnison River Basin Gunnison River, Uncompaghre COGULG02 all sediment Se* H River to Colorado River Tributaries to Gunnison River, COGULG04a C r y s t a l Reservoir to Colorado all Se H River All lakes and reservoirs tributary to the Gunnison River and not on Juniata Aquatic Life COGULG04b national forest lands from the H Reservoir Use (Hg FCA) outlet of Crystal Reservoir to the Colorado River All lakes and reservoirs tributary to the Gunnison River and not on J a t z COGULG04b national forest lands from the Se Bottomlands outlet of Crystal Reservoir to the Colorado River Red Rock Creek within Black COGULG04c Canyon of the Gunnison National all Se H Park Surface, Ward, Tongue, Youngs, Tongue COGULG07 and Kiser Creeks not on USFS Creek, Ward Se land Creek 5 Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment Surface, Ward, Tongue, Youngs, Surface COGULG07 and Kiser Creeks not on USFS Fe (Trec) Creek land Kannah Tributaries to Gunnison River, Creek below COGULG08 Se H Kannah Creek USGS station 09152000 COGULG09 Fruitgrowers Reservoir all D.O. H COGULG11a Tributaries to the Smith Fork Lunch Creek sediment North Fork of the Gunnison from COGUNF03 Black Bridge above Paonia to the all Se H confluence within the Gunnison Hubbard, Terror, Minnesota and Leroux Creeks from USFS Leroux Creek, COGUNF05 boundary to N. Fork. Mainstem of Se* H Jay Creek, Jay Creek and mainstem and tribs of Roatcap Creek to the N. Fork Tributaries to the North Fork of the COGUNF06a Gunnison River not on USFS Short Draw Se H lands Coal Gulch, Tributaries to the North Fork of the Hawksnest COGUNF06a Gunnison River not on USFS Fe(Trec) Creek, lands Gribble Gulch Bear Creek, Reynolds Creek, Bell Creek, McDonald Creek, Cottonwood Creek, Love Gulch, Cow Creek, Dever Creek, German COGUNF06b Creek, Miller Creek, Stevens Big Gulch Se Gulch, Big Gulch, Stingley Gulch and Alum Gulch not on national forest lands from the source to the North Fork of the Gunnison River 6 Colorado’s Clean Water Monitoring & Act Section 303(d) WBID Segment Description Portion Evaluation 303(d) Priority Parameter(s) Impairment Bear Creek, Reynolds Creek, Bell Creek, McDonald Creek, Cottonwood Creek, Love Gulch, Cow Creek, Dever Creek, German Cottonwood COGUNF06b Creek, Miller Creek, Stevens Fe(Trec) Se H Creek Gulch, Big Gulch, Stingley Gulch and Alum Gulch not on national forest lands from the source to the North Fork of the Gunnison River Tributaries to the San Miguel River COGUSM02 Bilk Creek Cd from the source to Leopard Creek San Miguel River, Bridal Veil & below Idarado COGUSM03a