CLRMA Conference April 2019 Presentation Overview Background & - - PowerPoint PPT Presentation

Water Quality Roadmap CLRMA Conference

April 2019

Presentation Overview

• Background & Roadmap Overview
• Reg. 85 Update

Voluntary Incentive Program & Outreach

• Criteria Development Planning
• Technical Advisory Committee

Update

• Upcoming Efforts/Events

Background & Overview of Roadmap

Background...

Where have we been?

• 2012 RMH

○ Interim Numeric Stds - Nutrients ○ Regulation No. 85

• October 2017 RMH

○ Promote Progress ○ Voluntary Incentive Program ○ Colorado Nutrient Management Plan and 10-Year Water Quality Roadmap

Current regulatory strategy for nutrients

Nutrients Management Control Regulation (#85)

• Technology based
• Enhanced stormwater

controls

• Voluntary nonpoint

source controls

• Monitoring requirements
• Voluntary incentive

program Scientifically-based standards (#31, #32-38)

• Focused protection of

classified uses

• Applied to streams above

dischargers

• Applied to prioritized set
• f lakes
• Applied to protect

municipal water supplies

Roadmap Overview

• 10-year plan (2017-2027)
• Reducing nutrients: point source & NPS
• Revise nutrient standards
• Other standards development
• Developing feasibility information
• Monitor and measure progress

Water Quality Roadmap...

Where are we going?

• Vision
• Expectations
• Quarterly meetings
• Report-outs from Technical Advisory Committees
• Report-outs to WQ Forum, WQCC
• Outreach
• Transparency
• Engagement

Current Strategy & Road to 2027

Feasibility & Implementation

• Engineering Solutions
• Other Solutions
• Sector Based
• Site Specific

considerations

• Fact Sheets
• Info to support DSVs

Criteria Development

• Evaluate available

science

• Conduct Studies
• Form TACs
• Stagger Development

Efforts

• Roll out draft criteria

when done

Roadmap Highlights

• Based on lessons from past experience and listening to

stakeholder feedback

• Allow reasonable time to get work done between milestones
• Hold hearings when we are ready + draft criteria early
• Increase efficiency by simultaneously adopting standards in Reg.

31 + basins

• Develop criteria packages early to allow for in-depth consideration
• f implementation
• Conduct feasibility studies to generate info to better understand

issues like treatment synergy/alternatives

• Structured and routine outreach and engagement
• Focus on making progress in technical advisory committees (TACs)

Roadmap Components

• Regulatory actions
• Standards development technical actions

○ Cadmium ○ Temperature ○ Lakes Nutrients ○ Ammonia ○ Selenium ○ Stream Nutrients

• Feasibility, non-point source, Reg. 85
• Workgroups and outreach

10-Year Water Quality Roadmap

• Reg. #31

RMH clean-up, arsenic/ temperature standards revisions Cadmium criteria Draft lakes TN & TP criteria

• Reg. #85

Review Adopt Chla for streams, TN & TP for DUWS/Swim Beaches

Outreach 2018 2020 2022 2021 2019

• Reg. #85:

NPS controls, incentive efforts

10-Year Water Quality Roadmap

Adopt TN & TP for remaining waters and adopt ammonia and selenium statewide. Draft ammonia criteria Draft selenium criteria

• Reg. #85

Review Draft streams TN & TP criteria

2023 2025 2027 2026 2024 Outreach

Engagement

Project Track TACs

Quarterly Roadmap Workgroup

Water Quality Forum Water Quality Control Commission

More information on 10-Year Water Quality Roadmap and Nutrient Management Plan

• https://www.colorado.gov/cdphe/clean-

water-nutrients

• Or google “colorado clean water nutrients”

Regulation No. 85 Update

Projects related to common goal

• Development of nutrient

standards (rivers, streams)

• Voluntary Incentive

Program

• Treatment Fact Sheets

○ Ammonia ○ Nitrate ○ Selenium ○ Arsenic ○ Temperature

• Regulation 22 - planning
• Inventory: Domestic
• Term limited (3 year)
• Mentoring Program
• Wastewater design templates
• Regulatory flowchart
• CLEAN Center/eRAMs
• Selenium - fish tissue

sampling

• Nutrient data collections (Reg

85)

• Cost sharing studies with Utah

Feasibility Study Updates

Criteria Development Planning Focus on Lakes/Nutrients

Colorado’s Lakes Nutrients Criteria

TP, TN, Chla: summer (July 1-September 30) average in the mixed layer of lakes, allowable exceedance frequency 1-in-5 years. DUWS: March 1-November 30 average chlorophyll a (ug/L) in the mixed layer of lakes (median of multiple depths), allowable exceedance frequency 1-in-5 years For lakes smaller than 25 acres, narrative standard applies

Cold Lakes Warm Lakes DUWS Total Phosphorus (ug/L) 25 83

• Total Nitrogen (ug/L)

426 910

• Chlorophyll a (ug/L)

8 20 5

EPA’s Nutrients Action Letter

EPA’s July 14, 2016 action letter approved Colorado’s nutrient criteria for lakes and reservoirs with recommendations:

• Interim values are appropriate for lakes with

relatively low Chla yield, but are under-protective in instances with stronger algal response to nutrients

• Warm lake value does not adequately protect

against risk of algal blooms

• Consider site-specific factors that influence algal

growth (e.g., non-algal turbidity)

Approach and Timeline

Approach

• Plan to take similar approach and develop standards for TP, TN, and Chla
• EPA urging development of TP and TN standards for DUWS
• Currently working with EPA and contractors to evaluate existing data

Timeline

• 2019-2022:Roadmap quarterly meetings
• 2020-2022: technical advisory committee (TAC)
• 2021: draft criteria available
• 2022: rulemaking hearing

○ TP and TN above dischargers, DUWS reservoirs, and lakes and reservoirs with public swim beaches ○ Chla for all waters as appropriate

• 2027: rulemaking hearing to consider TN and TP for remaining waters

Current and Future Work

• Summarize data and identify data gaps
• Fill data gaps for TP, TN, Chla
• Reevaluate classification scheme for warm lakes
• Reevaluate the primary production response to

nutrients

• Account for the effects of confounding factors such as

nutrient limitation, turbidity, residence time, sample averaging period, and variability between cold and warm lakes

• Workgroup, outreach, and coordination

Get Involved

• Lakes nutrient criteria will be introduced as

a Roadmap workgroup topic in fall 2019.

• Lakes nutrient criteria technical advisory

committee (TAC) will convene in fall/winter 2019.

• Share existing data or coordinate with the

division on future sampling

Upcoming Efforts/Events

Next Meeting(s)

• May 30, 2019 - CDPHE Sabin Room
• 1:00-4:00
• Topics include….
• August 2019 - Locations TBD – Option to

hold the meeting west of Denver.

Upcoming Efforts

• Email List – please sign up - https://goo.gl/SfCmCT
• Web Materials
• Stakeholder Engagement
• Do we have the right people at the table
• Other outreach suggestions
• How do we change when meeting focus changes?

Water Quality Management in Colorado

Assessment Planning Implementation Assistance Funding

Questions