Post on 27-Mar-2015
transcript
Chesapeake Bay TMDL
May 13, 20092009 NPS/TMDL/WQM States Meeting
Martinsburg, West Virginia
Jennifer SincockU.S. EPA Region 3
Water Protection Division
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Portrait of an Ecosystem
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Where are the Bay WQ Impacts?
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Pollutant Sources to the Bay
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-61
-74
-85
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67
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Air Nitrogen
Urban/Suburban Sediment
Urban/Suburban Phosphorus
Urban/Suburban Nitrogen
Wastewater Phosphorus
Wastewater Nitrogen
Agriculture Sediment
Agriculture Phosphorus
Agriculture Nitrogen
Data and Methods: www.chesapeakebay.net/status_reducingpollution.aspx
Note: Some jurisdictions may be underreporting existing stormwater management practices.
How are we doing?
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The science behind the TMDLs
Watershed Model
Bay Model
Land UseChange Model
Airshed Model
CriteriaAssessmentProcedures
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Percent of Space
Per
cent
of T
ime
CFD Curve
Area of Criteria Exceedence
Area of AllowableCriteria
Exceedence
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Percent of Space
Per
cent
of T
ime
CFD Curve
Area of Criteria Exceedence
Area of AllowableCriteria
Exceedence
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What’s the Scope of the Bay TMDL?• TMDL will establish
loads for all Bay states
• Nutrients, sediments
• Oxygen, clarity/Bay grasses, algae
• All impaired tidal water segments
• All sources– Point source control thru NPDES
– NPS implementation thru 319 funding
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Not one bay TMDL but
(as many as)92 segment TMDLs
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Impaired Segment TMDLs• EPA Regulations require TMDLs for each
impaired Water Quality Limited Segment
TMDLSD = ∑ WLASD + ∑ LASD + MOS
TMDLSD = Segment Drainage TMDL
WLASD = WLA from Segment Drainage
LASD = LA from Segment DrainageMOS = Margin of Safety (implicit)
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Segment Drainages for Impaired Segment TMDLs
Potomac Tidal Fresh (POTTF)
Potomac Oligohaline (POTOH)
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Wasteload Allocation
For Tidal Fresh Segments:
WLASD = ∑ individual WLAs (tidal state) + Gross WLA (nontidal state)
Other Segments:
WLASD = ∑ individual WLAs (tidal state)
• Determined by each state’s Implementation Plan development process and could include:
POTW Industrial StormwaterMS4s Non-significant permits Others?
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Load AllocationFor Tidal Fresh Segments:
LASD = Source Sector LAs (tidal state) + Gross LA (nontidal state)
Other Segments:
LASD = Source Sector LAs (tidal state)
• Source Sector LAs would be based on each state’s Implementation Plan development process and could include:
Agriculture ForestOther NPS Urban/Res/RoadAtmospheric Others?
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Bay Cap
• The Bay Cap will be set for each pollutant (N, P, and sediment) to meet water quality standards at critical conditions (i.e. worst case scenarios) for the entire Bay as well as localized impairments.
Bay Cap = ∑ Bay Impaired Segment TMDLs + ∑ Bay Unimpaired Segment Loads
• (i.e., The Bay Cap based on 2003 Allocations would be 175 MPY for N and 12.8 MPY for P)
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Basin-jurisdiction Caps
Maryland
Delaware
New York
District of Columbia
West Virginia
Pennsylvania
Virginia
Preliminary Draft Allocations July/August 2009
Iterative Draft Allocations
TMDL Allocations
December 2010
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Building the Chesapeake Bay Nutrient TMDLs
Determine the Bay cap load
Allocate the Bay cap load
to basin-jurisdictions
Sub-allocate the basin-jurisdiction
loads to sources in state implementation plans
Determine which source loads
go into each impaired segment
Establish the TMDL for each impaired segment
A TMDL is not enough!
Set BiennialMilestonesfor closing identified program gaps
Contingencies by States if milestones fall short
Identify ProgramGaps between needed controls and existing program
capacity
Monitor Effectiveness to assess implementation actions
EmployConsequences by EPA if appropriate progress is not being made
EstablishChesapeakeBay TMDL:•Set total nutrient and sediment caps•Wasteload and load allocations
ReviseImplementation plansIdentifying the nutrient and sediment controls needed to meet the Basin caps
Evaluate Program capacity (programmatic, funding, technical) to fully implement tributary strategies
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Consequences/Contingencies
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How does it all fit?System/Process Question Document
Accounting What loads to achieve?
Bay Cap load, J-B cap loads, segment TMDLs
Planning What controls are needed (e.g. BMP’s)
State Implementation Plans
Implementation What is the program delivery system?
2 year commitments
Bay Cap Load
Susquehanna
West Shore Ches.
MD-DEEastern Shore
VA Eastern Shore
Patuxent
Potomac
Rappa-hannock
York
James
WV MD VA DC PA
2009-2011
2011-2013
2013-2015
2015-2017
2019-2011
2009-2011
2011-2013
2013-2015
2015-2017
2019-2011
2009-2011
2011-2013
2013-2015
2015-2017
2019-2011
2009-2011
2011-2013
2013-2015
2015-2017
2019-2011
2009-2011
2011-2013
2013-2015
2015-2017
2019-2011
Basin-jurisdiction allocations/State Implementation Plans
2 year commitments
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What we know?• We need a bigger, better toolbox to reduce nutrients
and sediments• The tributary strategies level of effort is not enough
to restore the bay• The existing tributary
strategies result in higher
loadings than previously
thought.
-new hydrology
-new BMP efficiencies
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What we need to know…but don’t know yet
• Sediment allocation process
• How much will it cost?• What are the best
enhancements to the existing nutrient and sediment control toolbox?
• Who pays?
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Building a bigger toolbox
Sources:• Agriculture• Air• Developed and
developing lands• Wastewater
Tools:• Public funding• Cap and trade• Tax incentives• Marketing program• Corporate Stewardship• Regulation• Other?
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Upcoming Deliverables from EPA
• Reasonable Assurance and Implementation Guidance– Staged Implementation
• Consequences if Milestones are not met
• Bay TMDL 101 public meetings
• Preliminary Draft Bay Cap and Basin-Jurisdiction Allocations
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Bay TMDL Outreach
• Bay TMDL 101 public meetings (Summer 2009)
• Meetings with Stakeholders and Local Governments (ongoing)
• “A River Runs To It” (Summer 2009)– Visits throughout watershed to highlight best
practices and present funds for projects
• EPA Bay TMDL Website (coming soon)
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What’s on the road ahead?• State Implementation Plan Development
(May 2009 – May 2010)• TMDL 101 public meetings (June – Sept.
2009) • Preliminary Draft Bay Cap & Basin-
Jurisdiction Allocations (July/Aug. 2009)• Draft TMDL Public Notice/Public Meetings
(June – Sept. 2010)• Final TMDL Established (December 2010)• Consent Decree deadline (May 1, 2011)
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Coming Attractions
• Preliminary Draft Chesapeake Bay Cap
• Preliminary Draft Basin-Jurisdiction Allocations
• Two-year Milestones
• Commitment Challenge Dates
• Independent Evaluate
• Public Messages
• Communication Challenges
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Executive Council MeetingMay 12, 2009
• Announce 2-year milestones
• Set Restoration End Date
• Executive Order
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Milestones Guidelines
• Will focus strictly on Bay water quality restoration goal
• Jurisdiction-specific milestone outcomes can be rolled up into a single, basin-wide summary
• Milestone outcomes include: pounds reduced, acres implemented, adoption of new regulations, legislation, policies
• Account for implementation actions of all partners
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Milestone Attributes
• First 2-year milestones will be from mid-2009 through end of 2011
• Confirming we intend to develop milestones which are ‘stretch goals but still attainable’
• Accelerates past rates of implementation
• Milestones could include commitments to seek new regulations, enactment of new legislation/policies
• Translate or relate actions and resources to Bay water quality endpoints
• Measurable, trackable, reportable and related to the end goal (cap load allocations)
• Consistency across the 7 jurisdictions
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Watershed-wide 2011 Milestones
• Nitrogen– Additional 6.9 million pounds nitrogen
reduced– 77% increase over previous rate of reduction
• Phosphorus– Additional 463,948 pounds phosphorus
reduced– 79% increase over previous rate of reduction
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A New Restoration End Date
“The date by which all the actions required to achieve the jurisdiction-specific and basinwide cap load allocations have been fully implemented on the ground”
“No Later Than” 2025
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Executive Order Signed May 12, 2009
• Chesapeake Bay declared a national treasure• Directed Federal Agencies to make restoration a
greater priority with the following key provisions:– Establishing a Bay Federal Leadership Committee– Directing EPA to use its CWA authorities to the maximum
extent possible– Improving agricultural conservation practices and
focusing financial support– Reducing water pollution from federal lands and facilities– Developing an interagency Chesapeake Bay Climate
Change Strategy– Expanding public access to the Bay via Fed. property– Strengthening scientific support for decision-making
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Funding• American Recovery and Reinvestment Act
– Provides hundreds of millions of dollars for projects that advance the cleanup of the Chesapeake Bay
– Projects range from WWTP upgrades to green infrastructure projects
• Farm Bill– Additional $188 million over next four years for
agricultural conservation projects to reduce pollution flowing into the Bay
– Support nutrient management, cover crops, crop residue management, vegetative buffers, and other agricultural conservation practices
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Accountability
• Two-year Milestones and Contingencies
• Chesapeake TMDL and Consequences
• Independent Evaluator
• Bay Barometer
• Adaptive Management– Monitor progress and adjust course if
necessary
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Further Information
• Chesapeake Bay Program Water Quality Steering Committee website
http://www.chesapeakebay.net/committee_wqsc_info.aspx?menuitem=16618
• EPA Region 3 Contacts– Water Protection Division
• Bob Koroncai (koroncai.robert@epa.gov)• Jennifer Sincock (sincock.jennifer@epa.gov)
– Chesapeake Bay Program• Rich Batiuk (batiuk.richard@epa.gov)
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EPA’s Draft Bay TMDL Framework• States’ existing Chesapeake Bay WQS should
not be relaxed based on feasibility• Bay TMDLs must contain the LAs and WLAs
necessary to achieve the states’ existing Chesapeake Bay WQS
• State Implementation Plans will be written to achieve the loadings assigned in the Bay TMDLs – Staged implementation is a possible option
• Wastewater discharge load requirements will continue to be set at the discretion of states
• An affordability assessment will be completed