Presentation on theme: "9.Monitoring Plan + 10.Implementation Plan + 4. LAs* 5. WLAs* 6. MOS* 7.Seasonal Variation* 8.Reasonable Assurance + TMDL Process 1 Problem Understanding."— Presentation transcript:
9.Monitoring Plan + 10.Implementation Plan + 4. LAs* 5. WLAs* 6. MOS* 7.Seasonal Variation* 8.Reasonable Assurance + TMDL Process 1 Problem Understanding Stakeholder Involvement & Public Participation Linkage between Loading and Waterbody Response Allocation Analysis TMDL Report and Submittal 1. Description of waterbody, pollutant of concern, pollutant sources, and priority ranking 2. WQS and numeric WQ target* 3.Loading Capacity* (including critical conditions*) 11. Public Participation* Elements in a TMDL Submittal * Required by regulation (40 CFR 130.7) + Recommended through guidance From Guidelines for Reviewing TMDLs under Existing Regulations issued in 1992 (May 20, 2002): http://www.epa.gov/owow/tmdl/guidance/final52002.html Implementation and Monitoring Plan TMDL Target Identification Source Assessment
Climate Change Assessment Process 2 Elements in a Climate Change Assessment Adapted from Scanning the Conservation Horizon, A Guide to Climate Change Vulnerability Assessment (2011): http://www.nwf.org/News-and-Magazines/Media-Center/Reports/Archive/2011/Scanning-the-Horizon.aspx 1. Determine element of concern 2. Downscaling approach 3.Emission scenario 4.Time horizon 5. Likelihood of event 6. Consequence of event 7.Reduce sensitivity 8.Reduce exposure 9.Increase adaptive capacity 10.Set priorities 11.Select targets 12.Adaptive management Identify Climate Trends Assess Vulnerability / Risk Identify Adaptation Options Problem Understanding Stakeholder Involvement & Public Participation Implementation and Monitoring
TMDL and Climate Change Process Linkages 3 Stakeholder Involvement & Public Participation TMDL Target Identification Problem Understanding Source Assessment Linkage between Loading and Waterbody Response Allocation Analysis TMDL Report and Submittal Implementation and Monitoring Plan Climate Change Process TMDL Process Problem Understanding Identify Climate Trends Assess Vulnerability / Risk Identify Adaptation Options Implementation and Monitoring
Focus on Steps 1 and 2 of TMDL Process: Water Temperature and Climate Change 4 Key TMDL Considerations: Could projected/anticipated climate change impacts affect : Pollutants of concern? Priority ranking of the waterbody? Projected land use distribution? Wildlife resources? If so, is it appropriate to consider climate change in the TMDL analysis? Will climate change affect/change criteria? What is the planning horizon of the TMDL? Downscaling Approach Emissions Scenario Time Horizon Climate Model Meteorological data Problem Understanding TMDL Target Identification Source Assessment Problem Understanding Identify Climate Trends Key Climate Considerations: What are the priority concerns related to water quality? What types of climate data are available? Is it necessary to model climate change?
Focus on Steps 3 - 8 of TMDL Process: Water Temperature and Climate Change 5 Key TMDL Considerations: How could climate data/models be defensibly incorporated into watershed models? How might critical condition parameters change? Could climate change cause a use to become unattainable? Could climate change be addressed in MOS? Should there be an allocation for future climate impacts? How will impacts affect NPDES discharge permits? How will impacts affect MS4 permits? Air TempPrecipitation Likelihood of Climate Induced Changes Consequences of Climate Induced Changes (Stream Temp.) Natural background Levels Flow Seasonal Variability Land Use Allocation Analysis Assess Vulnerability / Risk Identify Adaptation Options Linkage between Loading and Waterbody Response
Focus on Steps 9 - 10 of TMDL Process: Water Temperature and Climate Change 6 TMDL Report and Submittal Implementation and Monitoring Plan Implementation and Monitoring Key TMDL Considerations: Should climate change considerations be incorporated into monitoring plan? What time horizons should be used? What additional data might be needed? What happens if climate change causes a use to become unattainable? Key Climate Change Considerations: How to develop a comprehensive management plan for addressing waterbody health? What are the most appropriate subsidiary regulatory tools?
Focus on Stakeholder Participation: Water Temperature and Climate Change 7 Key TMDL Considerations: Climate change is a “charged” term, and stakeholders/public could be skeptical in discussing/considering climate change impacts. Climate change assessment includes significant uncertainty. How could climate change information be presented to the public in a way that acknowledges this inherent uncertainty? Climate change assessment requires additional data needs from the traditional TMDL process. How could stakeholders with relevant data and experience be identified and brought into the TMDL process?