Pima County 2015 Stormwater Management Program. Appendix A AZPDES Permit No. AZS000002 Appendix A. Surface Water Quality in Pima County Page 1 of 13 2012/2014 Assessment for Streams and Lakes, Chapter II, Santa Cruz Watershed, Page 4 Pima County 2015 Stormwater Management Program. Appendix A AZPDES Permit No. AZS000002 Appendix A. Surface Water Quality in Pima County Page 2 of 13 second consists of EPA 303(d) listings. ADEQ’S 303(d) Impaired Waters This list contains assessment units that were assessed as impaired by ADEQ during current and previous assessment listing cycles. The year each parameter was listed is located in parentheses after each parameter. The most current listings are in bold. Size Cause(s) of Assessment Unit Category* Status of TMDL Development (acres/miles) Impairment Bill Williams Watershed Ammonia (2004), Alamo Lake High pH (1996) 14,150 a 5 Nutrient TMDL to be initiated in 2010. 15030204-0040A Low dissolved oxygen (2006) Bill Williams River Ammonia, low From Alamo Lake to Castaneda Wash 35.9 mi dissolved oxygen, and 5 Nutrient TMDL to be initiated in 2010. 15030204-003 high pH (2006) Santa Maria River Alamo Lake TMDL may address From Little Sycamore Creek to Little 6.8 mi Mercury(d) (2006) 5 mercury loadings affecting this reach. Shipp Wash TMDL to be initiated in 2010. 15030203-013 Colorado – Grand Canyon Watershed Colorado River From Lake Powell to Paria River 16.3 mi Selenium(t) (2006) 5 TMDL to be initiated in 2008. 14070006-001 Colorado River Selenium(t) and From Parashant Canyon to Diamond 27.6 mi suspended sediment 5 TMDL to be initiated in 2010. Creek (2004) 15010002-003 Paria River Suspended sediment From Utah border to Colorado River 29.4 mi 5 TMDL to be initiated in 2010. (2004), E. coli (2006) 14070007-123 Virgin River Selenium(t) and From Beaver Dam Wash to Big Bend 10.1 mi suspended sediment 5 TMDL to be initiated in 2011. Wash (2004) 15010010-003 Colorado – Lower Gila Watershed Colorado River From Hoover Dam to Lake Mohave 40.4 mi Selenium(t) 5 TMDL to be initiated in 2010. 15030101-015 Colorado River Low dissolved oxygen From Main Canal to Mexico border 32.2 mi 5 TMDL to be initiated in 2010. and selenium(t) (2006) 15030107-001 Gila River Selenium(t) and From Coyote Wash to Fortuna Wash 28.3 mi 5 TMDL to be initiated in 2009. boron(t) (2004) 15070201-003 The low dissolved oxygen TMDL will Painted Rock Borrow Pit Lake Low dissolved oxygen 185 a 5 be initiated when the lake refills and 15070201-1010 (1992) stabilizes. Little Colorado Watershed Little Colorado River From Silver Creek to Carr Wash 6.1 mi E. coli (2004) 5 To initiate in 2007. 15020002-004 Little Colorado River Copper(d) and silver(d) From Porter Tank Draw to McDonalds 17.4 mi (1992), suspended 5 To initiate in 2007. Wash sediment (2004) 15020008-017 Middle Gila Watershed Alvord Lake 27 a Ammonia (2004) 5 To initiate in 2007. 15060106B-0050 Chaparral Park Lake Low dissolved oxygen 12 a 5 To initiate in 2007. 15060106B-0300 and E. coli (2004) Cortez Park Lake Low dissolved oxygen 2 a 5 To initiate in 2007. 15060106B-0410 and high pH (2004) Pima County 2015 Stormwater Management Program. Appendix A AZPDES Permit No. AZS000002 Appendix A. Surface Water Quality in Pima County Page 3 of 13 second consists of EPA 303(d) listings. Size Cause(s) of Assessment Unit Category* Status of TMDL Development (acres/miles) Impairment Gila River Suspended sediment From San Pedro River to Mineral Cr. 19.8 mi 5 TMDL to be initiated in 2009. (2006) 15050100-008 Gila River From Centennial Wash to Gillespie Boron(t) (1992), 5.3 mi 5 To be initiated in 2012. Dam selenium(t) (2004) 15070101-008 Hassayampa River From headwaters to Copper Creek Mine remediation actions should also 11 mi Low pH (2006) 5 15070103-007A address low pH. *Also on Not Attaining List Mineral Creek Copper(d) (1992), From Devil's Canyon to Gila River selenium(t) (2004), and Terms of consent decree should negate 19.6 mi 5 15050100-012B low dissolved oxygen need for TMDL. (2006) Queen Creek Copper TMDL in progress. To be From headwaters to mining discharge 8.8 mi Copper (2002) 5 completed in 2009. 15050100-014A Queen Creek From mining WWTP discharge to Potts Copper TMDL in progress. To be 5.9 mi Copper (2004) 5 Canyon completed in 2009. 15050100-014B Salt Watershed Apache Lake Low dissolved oxygen Salt River Reservoir nutrient TMDL to 2,190 a 5 15060106A-0070 (2006) be initiated in 2010. Canyon Lake Low dissolved oxygen Salt River Reservoir nutrient TMDL to 450 a 5 15060106A-0250 (2004) be initiated in 2010. Christopher Creek From headwaters to Tonto Creek Nutrient reduction strategies should 8 mi Phosphorus (2006) 5 15060105-353 also address phosphorus. *Also on Not Attaining List Five Point Tributary Loadings from this tributary should be From headwaters to Pinto Creek 2.9 mi Copper(d) (2006) 5 addressed in the Pinto Creek Phase II 15060103-885 TMDL. Pinto Creek From West Fork Pinto Creek to Roosevelt Lake 17.8 mi Selenium(t) (2004) 5 To be initiated in 2009. 15060103-018C *Also on Not Attaining List Salt River Suspended sediment From Pinal Creek to Roosevelt Lake 7.5 mi 5 To be initiated in 2010. (2006) 15060106A-004 Salt River From Stewart Mountain Dam to Verde Low dissolved oxygen Salt River Reservoir nutrient TMDL to 10.1 mi 5 River (2004) be initiated in 2010. 15060106A-003 Tonto Creek Nutrient reduction strategies should From headwaters to 341810/1110414 8.1 mi Phosphorus (2006) 5 reduce phosphorus loadings. TMDL 15060105-013A will be initiated in 2010 if needed. *Also on Not Attaining List San Pedro Watershed Brewery Gulch Copper loadings from this tributary will From headwaters to Mule Gulch 1 mi Copper(d) (2004) 5 be addressed in the Mule Creek copper 15080301-337 TMDL. Mule Gulch Ongoing TMDLs to be completed in From headwaters to above Lavender Pit 3 mi Copper(d) (1990) 5 2009 to establish site-specific criteria 15080301-090A for copper. Pima County 2015 Stormwater Management Program. Appendix A AZPDES Permit No. AZS000002 Appendix A. Surface Water Quality in Pima County Page 4 of 13 second consists of EPA 303(d) listings. Size Cause(s) of Assessment Unit Category* Status of TMDL Development (acres/miles) Impairment Mule Gulch Ongoing TMDLs to be completed in From above Lavender Pit to Bisbee 0.8 miles Copper(d) (1990) 5 2009 to establish site-specific criteria WWTP discharge for copper. 15080301-090B Mule Gulch Cadmium(d), Ongoing TMDLs to be completed in From Bisbee WWTP discharge to 3.8 mi copper(d)(t), low pH, 5 2009 to establish site-specific criteria Highway 80 bridge zinc(d) (1990) for copper. 15080301-090C San Pedro River From Babocomari Creek to Dragoon Initiated TMDL in 2006. To complete 17 mi E. coli (2004) 5 Wash in 2009. 15050202-003 San Pedro River Ongoing Superfund remediation and From Dragoon Wash to Tres Alamos 15.5 mi Nitrate (1990) 5 monitoring. Will initiate TMDL if Wash WQARF cleanup is not effective. 15050202-002 San Pedro River E. coli and selenium(t) Initiated TMDL in 2006. To complete From Aravaipa Creek to Gila River 14.8 mi 5 (2004) in 2009. 15050203-001 Santa Cruz Watershed Ammonia (2004), Necessity of TMDL development will Nogales Wash chlorine (1996), be based on outcome of current From Mexico border to Potrero Creek 6.2 mi 5 copper(d) (2004), E. international remediation activities on 15050301-011 coli (1998) infrastructure in Mexico. Santa Cruz River From New Mexico border to Nogales Will initiate TMDL when stream flow 17 mi E. coli (2004) 5 Intl WWTP discharge returns. (Current drought.) 15050301-010 Sonoita Creek Zinc(d) (2004), low From 750 feet below Patagonia WWTP To initiate in 2006 and complete in 18.6 mi dissolved oxygen 5 discharge to Santa Cruz R. 2009. (2006) 15050301-013C Upper Gila Watershed Blue River From Strayhorse Creek to San 25.4 mi E. coli (2006) 5 To initiate in 2009. Francisco River 15040004-025B Cave Creek From headwaters to South Fork Cave Initiated TMDL in 2006. To complete 7.5 mi Selenium(t) (2004) 5 Creek in 2009. 15040006-852A Gila River E. coli and suspended Initiated TMDL in 2006. To complete From New Mexico border to Bitter Cr 16.3 mi 5 sediment (2006) in 2009. 15040002-004 Gila River Initiated TMDL in 2006. To complete From Bonita Creek to Yuma Wash 5.8 mi E. coli (2004) 5 in 2009. 15040005-022 Gila River From Skully Creek to San Francisco Initiated TMDL in 2006. To complete 15.2 mi Selenium(t) (2004) 5 River in 2009. 15040002-001 San Francisco River To initiate TMDL in 2009. To complete From Blue River to Limestone Gulch 18.7 mi E. coli (2006) 5 in 2011. 15040004-003 Verde Watershed East Verde River Arsenic(t) and boron(t) To initiate TMDL in 2009. To complete From American Gulch to Verde River 25.8 mi 5 (2006) in 2011. 15060203-022C East Verde River From Ellison Creek to American Gulch 20.3 mi Selenium(t) (2004) 5 To initiate TMDL in 2011. 15060203-022B Oak Creek Initiated Phase II bacteria TMDL in From headwaters to West Fork Oak 7.4 mi E. coli (2006) 5 2004. To complete in 2009. Creek Pima County 2015 Stormwater Management Program. Appendix A AZPDES Permit No. AZS000002 Appendix A. Surface Water Quality in Pima County Page 5 of 13 second consists of EPA 303(d) listings.