Regulation 85 and the Colorado Nonpoint Source Program

Regulation 85 and the Colorado Nonpoint Source Program Estella Moore M. S. Nonpoint Source Program Coordinator Water Quality Control Division Colorado Department of Public Health and Environment

Water Use in Colorado (2015) Mgal/d Thermoelectric Industrial, Livestock Mining, Domestic , 84. 08 37. 16 , 33. 26 31. 91 , 672. 06 Irrigation , 8999. 64 Domestic Livestock Irrigation Mining Thermoelectric Industrial Dieter, C. A. , Maupin, M. A. , Caldwell, R. R. , Harris, M. A. , Ivahnenko, T. I. , Lovelace, J. K. , Barber, N. L. , and Linsey, K. S. , 2018, Estimated use of water in the United States in 2015: U. S. Geological Survey Circular 1441, 65 p. , https: //doi. org/10. 3133/cir 1441. [Supersedes USGS Open-File Report 2017– 1131. ]

Nutrient Management Control • Surface Flow -> Sheet and Rill Erosion • Nutrient mobility • Varies • Soil • N/P Form • Water Inputs: Water Demands • Nitrate = highly mobile • Phosphate • Surface flow • Sediment transport Thousand Acres Irrigated Crops (2015) Surface, 1604. 04 Sprinkler, 1405. 34 Microirrigation, 2. 7

Nonpoint Source Program • § 319 CWA • “restore to full use classifications for those waters impaired by nonpoint sources of pollution and to protect existing water quality from future impairments by using an open process that fully involves the public” • Implementation Projects and BMPs • Voluntary

Impairments • Metals, Selenium, E. coli, Chlor-a, Phosphorus, Temperature § 319 Funds Used for Projects to Address: Ø Impairments Ø Watershed-Based Plans Ø Education & Outreach

Nutrient Pollution ● Excess N and P ● Water Quality Issues ● Algal Blooms ● Human and Animal Health ● HAB and Cyanotoxins ● Too much nitrogen in groundwater can impact drinking water supplies ● Fish Kills ● Damage to the Economy

Nutrient Management Control: Reg. 85 • Technology-based treatment requirements for P & N • Large domestic and some industrial wastewater dischargers • Nutrient control requirements for MS 4 s • Monitoring requirements • Point Source and Nonpoint Source • Voluntary controls of NPS

Reg. 85 • WQCC may consider regulatory requirements after 2022 Point Source (e. g. WWTF) <2027 Incentive Program >2027 Effluent Limits (Reg. 31) Nonpoint Source (e. g. Agriculture) Education Programs BMPs NPS Management Programs Trading Proposals

Reg. 31 • Interim numerical values: • TP, TN, Chlor-a • Protect classified uses • Protect waters upstream of dischargers • Protect Direct Use Water Supply (DUWS) • Voluntary Incentive Program for dischargers

Reducing Nutrient NPS Nonpoint Source (e. g. Agriculture) • Collaboration üLessons Learned • BMPs Education Programs BMPs NPS Management Programs üBuffer Strips ü Above and Below WQ (e. g. nutrients, E. coli, sediment) • Partnerships üLower Arkansas River Basin üCSU (e. RAMS) üCDA/CSCB Dialogue w/ Ag community to tell üBTCD stories of success & progress in prep for üNRCS • Monitoring üLARV Reg. 85 triennial review 2020 Trading Proposals

NPS Management Plan Update • 2012 • https: //www. colorado. gov/pacific/sites/default/files/T 1_WQCC_201 2 -NPS-management-Plan_0. pdf • § 319 CWA • WQ impacts caused by NPS pollution • $$$ distributed to local communities • Management Plan IDs NPS Strategy • Survey • E-mail sign-up sheet • Short – 10 questions – 10 -15 min

NPS Funding Opportunities & Resources CWA § 319 Grant State Revolving Fund Urban Program Hydromodification/ Areas, Support, Habitat Alteration, 4. 00% 12. 00% Agriculture, 40. 00% • RFA – March 11, 2019 • Implementation Projects • Mini-Grant Abandoned Mine Lands, 18. 00% Total NPS funds during this reporting period: $4, 738, 012 Information and Education , 25. 00% • https: //www. colorado. gov/pacific/cdphe/nonpoint-sourcepollution-management • https: //coagnutrients. colostate. edu/colorado-regulation-85/

Contact Estella Moore M. S. (303) 692 -2864 Estella. moore@state. co. us Nonpoint Source Program Coordinator Restoration and Protection Unit Watershed Section Clean Water Program Water Quality Control Division Colorado Department of Public Health and Environment