Transcript Deep River-Portage Burns Watershed TMDL Stakeholder Meeting March 13, 2013 Agenda • Watershed Description • Listing Information • Monitoring Information • TMDL Allocation Development • TMDL Process • Schedule.

Deep River-Portage Burns
Watershed TMDL
Stakeholder Meeting
March 13, 2013
Agenda
• Watershed Description
• Listing Information
• Monitoring Information
• TMDL Allocation Development
• TMDL Process
• Schedule
The Deep River-Portage Burns
Watershed
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General Watershed Description
Subwatersheds
General Watershed Land Use
General Watershed Population
Land Use
Open Water
1%
Wetlands
8%
Agriculture
24%
Developed
42%
Open Water
Developed
Forested Land
Hay/ Pasture
5%
Shrub/ Scrub
11%
Shrub/ Scrub
Forested Land
9%
Hay/ Pasture
Agriculture
Wetlands
Listing Information
Historic Sampling
• Macroinvertebrates Main Beaver Dam Ditch 1990
• Fixed Station Data 1990-2013
• Burns Ditch TMDL Assessment 2000
– E. coli
• Probabilistic Sampling 2000, 2005, 2010
Draft 2012 303(d) Listings
• Approximately 125 stream miles impaired:
– 91 stream miles Impaired Biotic Community (IBC)
– 50 stream miles E. coli
– 34 stream miles Polychlorinated Biphenyl (PCB) in fish
(Category 5B)
– 15 stream miles Dissolved Oxygen (DO)
– 12 stream miles siltation
Reassessment Schedule
• Data collection completed:
– E. coli October 2013
– Chemical parameters March 2014
– Fish/Macroinvertebrate July 2013
• Data packet completed:
– May 2014
• Reassessment meeting:
– June/July 2014
Monitoring Information
2013 Recreational Season Monitoring
• 35 sites sampled monthly
– Sampling begins on April 1
– Sampling ends on October 31
• 9 flow sites sampled monthly
– Sampling method
• Acoustic Doppler Profiler (ADP)
• FlowTracker/Acoustic Doppler Velocimeter (ADV)
2013 Non-recreational Season Monitoring
• 9 sites sampled monthly
– These are 9 of the original 35 sites
– Sampled for 12 months
– These are the 12-digit pour points
• This location provides the most information to be used
for the 12-digit watershed
– These are the flow sites
• Flow will continue to be sampled monthly at these sites
Water Quality Parameters
(E. coli)
125 MPN/100 mL
5 Sample Monthly
Geometric Mean
Indiana Administrative Code (327
IAC 2-1-6)
235 MPN/100 mL
Single Sample Maximum
•E. coli will be sampled monthly April 1-October 31 during the recreational
season
•There will also be a 5 sample monthly geometric mean sampled in
September
Water Quality Parameters
(Biological)
Fish Community Index of Biotic
Integrity (IBI)
(Range of possible scores is 6-60)
Fully Supporting: IBI > 36
Not Supporting: IBI < 36
Benthic Aquatic
Macroinvertebrate Index of
Fully Supporting: mIBI > 36
Biotic Integrity (mIBI)
Not Supporting: mIBI< 36
(Range of possible scores is 12-60)
Qualitative Habitat Evaluation
Good Habitat: QHEI > 51
Index (QHEI)
Poor Habitat: QHEI < 51
(Range of possible scores is 0-100)
Based on IDEM scoring
methodology
Based on IDEM scoring
methodology
Based on IDEM scoring
methodology
Water Quality Parameters
(General Chemistry)
Total Solids
No Regulatory Target
Total Suspended Solids (TSS)
No value should exceed 30.0 mg/L
in an IBC impaired segment
Total Dissolved Solids
No Regulatory Target
Sulfate
Criteria based on hardness and
chloride
Indiana Administrative Code (327
IAC 2-1-6)
Chloride
Criteria based on hardness and
sulfate
Indiana Administrative Code (327
IAC 2-1-6)
Hardness
No Regulatory Target
Alkalinity
No Regulatory Target
IDEM Target value
Water Quality Parameters
(Nutrients)
Ammonia Nitrogen
Criteria based on temperature
and pH
Indiana Administrative Code (327 IAC
2-1-6)
Total Kjeldahl Nitrogen (TKN)
No value should exceed 0.591
mg/L
U.S. Environmental Protection Agency
(U.S. EPA) recommendation
Nitrate-N+ Nitrite-N
No value should exceed 10 mg/L
IDEM Target value
Total Phosphorus (TP)
No value should exceed 0.30 mg/L
IDEM Target value
Total Organic Carbon (TOC)
No Regulatory Target
Chemical Oxygen Demand (COD)
No Regulatory Target
Water Quality Parameters
(Field Parameters)
pH
No value should be < 6.0 or > 9.0
Indiana Administrative Code
(327 IAC 2-1-6)
DO
No value should be < 4.0 mg/L or >
12.0 mg/L
Indiana Administrative Code
(327 IAC 2-1-6) and IDEM
Target value
% DO Saturation
No Regulatory Target
Temperature
Values vary monthly
Specific Conductance
No Regulatory Target
Turbidity
No Regulatory Target
Weather Conditions
No Regulatory Target
Indiana Administrative Code
(327 IAC 2-1-6)
Monitoring Overview
• Monitoring will begin April 2013
• 35 sites monitored during recreational season
– 7 monthly results
• 9 sites monitored during the non-recreational season
– 12 monthly results
• 2 IDEM fixed stations will also be incorporated
– Monthly sampling
• Open to comments on site selection in this project
– Have met with NIRPC and incorporated their thoughts
TMDL Allocation
Development
TMDL Allocations
• Clean Water Act requires that TMDL be
allocated as follows:
– TMDL = WLA + LA + MOS
– Wasteload allocations (WLA) for “point sources”
(regulated under NPDES)
– Load allocations (LA) for nonpoint sources and
– MOS for margin of safety
Allocation Development
• Data used to develop allocation
– Precipitation
• National Oceanic and Atmospheric Administration
(NOAA) weather station
– Flow
• U.S. Geological Survey (USGS) Flow Gage
– Modeling Using IDEM Data
• Spreadsheet modeling tool
• Traditional modeling
Precipitation
• Many sources of pollution are impacted by
precipitation
• A path for pollutant to enter a waterbody is
through rain and snow melt
• Information on precipitation used with the
Load Duration Curve (LDC) will give a better
overall sense of flow conditions in stream
2500
2.5
2000
2
1500
1.5
1000
1
Rainfall (in)
E.coli (MPN/100mml)
Precipitation/ E. coli Graph
Target
Rainfall
E.coli
500
0
0.5
0
Flow
• The long history of flow gages provide a
valuable tool in evaluating water quality data
• USGS flow gages provide a consistent high
quality source of flow information
• The large network of flow gages means that
finding a representative flow gage is possible
Load Duration Curve
E. coli Load (CFU/day)
10,000,000,000,000
1,000,000,000,000
Target
100,000,000,000
All Data
10,000,000,000
1,000,000,000
0
10
20
30
40
50
60
70
Flow Duration Interval (%)
IDEM Data & USGS Gage 03340800 Flow Data
Upstream Drainage Area is 22.64 Square Miles
80
90
100
Modeling
• Recovery Potential Tool
• Purdue University Calumet will be doing more
in depth modeling (HSPF)
• IDEM will be using simplistic modeling
– LDC, STEPL, LOADEST, L-THIA
• A comparison of different models will be
completed by IDEM for this project
TMDL Process
What Is the TMDL Process?
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Review 303(d) list and sampling data
Kickoff stakeholder meeting
Gather information
Conduct additional monitoring
Reassess waterbodies
Gather additional information and produce draft TMDL
report
Hold the draft TMDL stakeholder meeting
30-day comment period
Revise draft TMDL and respond to comments on draft final
TMDL
Submit TMDL to U.S. EPA and receive final TMDL approval
IDEM Needs Your Help
• We need information on:
– Water quality data
– Possible pollution sources
– Potential stakeholders
– Studies, reports, documents
– Projects that have improved water quality
Schedule
Deep River-Portage Burns
Watershed TMDL Schedule
• Kickoff meeting: March 13, 2013
• Monitoring begins: April 2013
• Draft TMDL Meeting: Summer 2014
• 30-day Comment Period: Summer 2014
• Final TMDL Report Submittal to U.S. EPA: Fall 2014
Deep River-Portage Burns
Watershed WMP Schedule
• Estimated start of Section 319 Grant: January
2014
• Completed Deep River WMP: March 2015
• Implementation of BMPs: July 2015September 2017
TMDL Project Manager
Cory Fischer
TMDL Project Manager
Office of Water Quality
Indiana Department of Environmental Management
100 N. Senate Ave.
Indianapolis, Indiana 46204-2251
Phone: (317) 308-3184
Fax: (317) 308-3219
E-mail: [email protected]
www.watersheds.IN.gov/2347.htm