Trent Stober, HDR John Hoke, MDNR, The Evolving Nutrient Landscape in the US and Missouri & Numeric...
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Transcript of Trent Stober, HDR John Hoke, MDNR, The Evolving Nutrient Landscape in the US and Missouri & Numeric...
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© 2015 HDR, all rights reserved.
2015 Water Seminar
The Evolving Nutrient Landscape in the US and Missouri
TRENT STOBER – HDR
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John Trent Stober
Juris Doctor
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Mississippi River Basin & Gulf of Mexico
2nd largest hypoxic zone in world (EPA
2009), caused by excess nutrients
Largely considered a nonpoint source
issue
2009 EPA report
o “…rather than relying on upstream States
to set standards that protect downstream
waters, EPA could promulgate standards
for waters of national value, such as the
Gulf of Mexico or the Mississippi River.”
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MCEA et al. Mississippi River Basin Petition
Set nutrient criteria for Gulf of Mexico
and all waters within Mississippi River
Basin
Develop nutrient TMDLs for Gulf of
Mexico, Mississippi River and all
impaired tributaries
July 29, 2011 - USEPA rejects
Mississippi River Basin Petition
oDevelopment of nutrient criteria for 31 states
highly time and resource intensive
oRely on March 2011 State Nutrient Reduction
Framework
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EPA’s National Nutrient Strategy Nancy Stoner’s Memo (March 16, 2011)
1. Prioritize watersheds
2. Watershed load reduction goals
3. Ensure effectiveness of point source
permits in targeted watersheds
4. Agricultural areas
5. Stormwater and septic systems
6. Accountability and verification of
measures
7. Public reporting
8. Develop work plan and schedule for
numeric criteria development
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Missouri Nutrient Reduction Strategy
Cropland
Pastureland
Animal Agriculture
Onsite Wastewater
Municipal & Industrial
Wastewater
Urban Stormwater
Other Sources & Strategies
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Monitor Nutrient Discharges (Y1-3)
Determine Feasible Reduction
Targets (Y1-3)
Establish Approaches for
Reasonable Progress (Y3-5+)
Evaluate Funding Options (Y1-5)
Integrated Planning Efforts (Y1-5)
Outreach & Education Efforts (Y3-5)
Nutrient Reduction Strategy Wastewater Sources
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Gulf Restoration Network et al. v. EPA Lawsuit
Suit for EPA to make a determination
whether nutrient criteria are necessary
Louisiana Eastern District Court rules
that EPA must make determination but
can account for many factors.
5th Circuit Court of Appeals – April 7,
2015 Decision
oEPA has significant discretion on
responding to petition request
oRemanded EPA’s response back to
District Court
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Evolution of Florida Numeric Nutrient Criteria
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USEPA 2010 Numeric Nutrient Criteria
Lakes
oPhosphorus, Nitrogen &
Chlorophyll
Streams
oPhosphorus & Nitrogen
Springs
oNitrate + Nitrite
Independent Applicability
Downstream Protection Values
Lake Modified and Site-
Specific Alternative Criteria
Region TN (mg/L) TP (mg/L)
Panhandle West 0.67 0.06
Panhandle East 1.03 0.18
North Central 1.87 0.30
West Central 1.65 0.49
Peninsula 1.54 0.12
EPA Nutrient Criteria for Florida’s Streams
Source: 75 FR 75773; December 6, 2010
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Key Points from 2012 Decision
USEPA can promulgate Florida’s numeric
nutrient criteria
Demonstration of beneficial use impairment
not needed to set lake criteria
Reference stream approach does not
demonstrate harmful impacts.
Independent applicability of criteria is
allowed.
Annual averaging periods allowed.
Lake Modified are allowed and Site-Specific
Alternative Criteria are not ripe.
Downstream Protection Values are allowed
but not as framed by USEPA in rule.
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Florida DEP Stream Nutrient Criteria
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Causal and Response Parameters
Low DO
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Variable ecosystem response
Confounding factors
Challenges When Developing Nutrient Criteria
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Achievement of Florida Stream Nutrient Criteria
AND
OR
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Achievement of Florida Nutrient Criteria
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Virginia: An example…
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Source: Florida Department of Environmental Protection
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REGFORM – Missouri Water Seminar
September 11, 2015
Numeric Nutrient Criteria
John Hoke, Missouri DNR
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History – Numeric Nutrient Criteria in Missouri
• 2009 – Numeric nutrient criteria for lakes approved
by Missouri Clean Water Commission, submitted
to EPA
• 2011 – EPA disapproves most of the nutrient
criteria portion of the rule
• 2014 – Department develops alternate nutrient
criteria in response to EPA disapproval
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Nutrient Criteria – Reflect Regional Differences
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Nutrient Criteria – Protect Designated Uses
Chl-a Total P
Total N
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Nutrient Criteria – Connect WQS Goals