Transcript Big Raccoon Creek Watershed TMDL Stakeholder Meeting June 26, 2013 Agenda • Watershed Overview • Listing Information • Allowable Loads • TMDL Allocations • Implementation • TMDL Process.

Big Raccoon Creek
Watershed TMDL
Stakeholder Meeting
June 26, 2013
Agenda
• Watershed Overview
• Listing Information
• Allowable Loads
• TMDL Allocations
• Implementation
• TMDL Process
Watershed Overview
Big Raccoon Creek Watershed
•Located above Cecil M. Harden Lake
•Drains 215 square miles
•Counties
-Boone
-Hendricks
-Montgomery
-Putnam
-Parke
•Municipalities
- Advance
-New Ross
-Ladoga
-Roachdale
Land Use
2%
6%
13%
1%
5%
73%
Open Water
Developed
Forested Land
Shrub/Scrub
Hay/Pasture
Agriculture
Listing Information
Historic Sampling
•
•
•
•
•
Fixed Station Data 1999-2013
Probabilistic Sampling 1999, 2004, 2009
Second Year Study in 2005
Lake Data in 1991, 1997, 1999
Cyanobacteria and Microcystin Beach Sampling in
2011 and 2012
Draft 2012 303(d) Listings
• Approximately 81 stream miles impaired:
62 stream miles Impaired
Biotic Community (IBC)
36 stream miles E. coli
Cecil M. Harden Lake for
Mercury and PCBs
Assessment of Water Quality
• Fish Community and Water Chemistry Sampling in 2005
 28 sites for
fish community
 28 sites sampled
for water chemistry
 Data used for IBC
TMDL development
Biological Data
• 20% (6/28) sites had Impaired Biological Communities
Scoring Indices
Excellent
Good
Fair
Poor
Very Poor
IBI
53-60
45-52
35-44
23-34
0-22
QHEI
≥ 70
55-69
43-54
30-42
< 30
Chemistry Data
No obvious
chemical
impairments
DO=2.1
DO=3.5
DO=2.5
TP=0.33
TSS=74
DO=13.3
DO=3.5
TP=0.68
Assessment of Water Quality
• E. coli sampling performed by IDEM in 2010
 15 sites for E. coli
 Sampled 5 consecutive
weeks
 Data used for E. coli
TMDL development
E. coli Data
• Geometric mean calculated for each site
– All 15 sites reported as not meeting the standard in 2010
• Highest geometric mean = 2214.3
– Site WLV160-0038
• Lowest geometric mean = 543.13
– Site WLV160-0035
• Highest single sample = 2419.6
– Every site
• Lowest single sample = 191.8
– Site WLV160-0015
Impaired Biological Communities
(IBC) Results
• IBI - Index of Biotic Integrity ≥ 36 (WQS)
• Dissolved Oxygen - ≥ 4.0 mg/L (WQS)
• Total Phosphorus - ≤ 0.30 mg/L (U.S. EPA)
• Total Suspended Solids - ≤ 30.0 mg/L (IN NPDES
permitting)
Allowable Loads
The Definition of a TMDL
• The sum of allowable loads from point
sources, waste load allocations (WLA) and
nonpoint sources, load allocations (LA) plus a
margin of safety (MOS)
TMDL = ∑WLA + ∑LA + MOS
Allocations
• Waste load Allocation (WLA)
– WLAs are the contributions from point sources
– Point sources are easier to identify since they have
a discharge point or direct outlet to the stream
– Point sources have some type of monitoring or
information and are therefore easier to assign
loadings
Allocations
• Load Allocation (LA)
– LAs are the pollutant contributions from nonpoint
sources, which are not directly regulated
– "Diffuse" pollution, generated from large areas
with no particular point of pollutant origin, but
rather from many individual places
– Pollution that cannot be traced to a regulated
direct outlet or discharge point
Big Raccoon Creek Point Sources
Big Raccoon Creek Nonpoint Sources
TMDL Allocation
Development
TMDL Allocations
• Clean Water Act requires that TMDL be
allocated as follows:
– TMDL = WLA + LA + MOS
– Waste load allocations (WLA) for “point sources”
(regulated under NPDES)
– Load allocations (LA) for nonpoint sources
– MOS for margin of safety
Big Raccoon Creek
TMDL Allocations
• Waste load Allocations
– 4 NPDES facilities with sanitary component
– 1 CFO
• Demaree Farms Partnership: WLA= 0
– Illicitly connected on-site systems (i.e., straight
pipe dischargers) are zero
Big Raccoon Creek
TMDL Allocations
Waste Load Allocations for E. coli
– Advance WWTP: 0.14 (Billion/Day)
– New Ross WWTP: 1.23 (Billion/Day)
– Roachdale WWTP: 0.59 (Billion/Day)
– Ladoga WWTP: 0.93 (Billion/Day)
Big Raccoon Creek
TMDL Allocations
Load Allocations
– Agricultural Run-off
– Failing Septic Systems
– Livestock
– Stream Bank Erosion
– Urban Run-off
– Wildlife
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 pollutants 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
Flow
• The long history of flow gages provides 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
Headwaters of Big Raccoon Subwatershed
E.coli Load Duration Curve
WLV160-0063
1.00E+14
High
Flows
Moist
Conditions
Mid-Range
Flows
Dry
Conditons
Low
Flows
E.coli Load (CFU/Day)
1.00E+13
1.00E+12
1.00E+11
1.00E+10
1.00E+09
0
10
20
30
40
50
60
70
Flow Duration Interval (%)
Acceptable E.coli Load
IDEM Data & USGS Gage 03340800 Flow Data
Upstream Drainage Area is 27.38 Square Miles
Measured E.coli Load
80
90
100
E. coli Load Reductions Needed
HUC 12
Ranking
Maximum
[CFU/100mL]
E. coli Load
Reduction
Needed
(Billion
organisms/ Day)
Little Raccoon
Creek
1
2419.6
10,000
97.50
Byrd Branch
2
2419.6
9,810
98.91
Town of New
Ross
3
2419.6
4,030
97.39
Headwaters of
Big Raccoon
Creek
4
2419.6
2,400
93.98
Cornstalk Creek
5
2419.6
1,750
93.9
North Ramp
Creek
6
2419.6
1,670
90.04
7
2419.6
964
86.04
% Load
Reduction to
meet WQS
Haw Creek
Phosphorus and TSS
Load Reductions Needed
HUC 12
Ranking
Maximum
[mg/L]
TP Load Reduction
Needed
(lbs/ Day)
% Load Reduction
to meet WQS
1
0.68
0.88
55.88
2
0.33
0.24
9.09
Headwaters Big
Raccoon Creek
Little Raccoon
Creek
HUC 12
Maximum
[mg/L]
TSS Load
Reduction Needed
(lbs/ Day)
% Load Reduction
to meet WQS
Little Raccoon
Creek
74
90
59.46
Implementation
Implementation
• Implementation of TMDL expected to occur
via current and future activities such as:
– Vegetated filter strips
– Stream fencing (animal exclusion)
– Control of failing septic systems
– Conservation tillage
– Urban conservation practices
– Additional agricultural conservation practices
Current & Past Projects
Conservation Funding
• Clean Water Indiana (CWI)
• Environmental Quality Incentives Program
(EQIP)
• Conservation Reserve Program (CRP)
• Wildlife Habitat Cost-share Program
(WHCP)
• Section 319 Nonpoint Source Water
Quality Funding
• Game Bird Habitat Development Program
(GHDP)
• Wildlife Habitat Incentive Program (WHIP)
• Conservation Stewardship Program (CSP)
• Wetland Reserve Program (WRP)
LARE Grants
•
•
•
•
•
•
Critical Area Plantings
Grade Stabilization Structures
Livestock Watering Facilities
Grassed Waterways
Tree Plantings
Pasture and Hay Planting
Potential Priority Implementation Areas
Subwatershed
PPIA
Rank
Potential Implementation Actions
Little Raccoon Creek
1
Filter Strips, Inspection and Maintenance of WWTPs,
Conservation Farming Practices
Byrd Branch
2
Septic System Replacement, Riparian Buffers, Critical Area
Planting
Town of New Ross
3
Grassed Waterways, Filter Strips, Conservation Farming
Practices
Headwaters of Big
Raccoon Creek
4
Manure Handling, Storage, Treatment, and Disposal; Stream
Fencing, Inspection and Maintenance of WWTPs
Cornstalk Creek
5
Septic System Replacement, Grassed Waterways,
Conservation Farming Practices
North Ramp Creek
6
Filter Strips, Grassed Waterways, Conservation Farming
Practices
Haw Creek
7
Septic System Replacement, Conservation Farming Practices,
Filter Strips
BMP Implementation Areas
Increase Riparian Buffers
Livestock Exclusion Fencing
Grazing Land Management
Alternative Watering Systems
BMP Implementation Areas
Reduce Sediment Loads
Grassed Waterways
TMDL Process
Big Raccoon Creek
Watershed TMDL Schedule
• Monitoring: Spring 2010
• Draft TMDL Meeting: Summer 2013
• 30-day Comment Period: Summer 2013
(www.idem.IN.gov/nps/2652.htm)
• Final TMDL Report Submittal to U.S. EPA: Fall 2013
Who Fixes It?
• You!
• But there is help…
TMDL Project Manager
Ali Meils
TMDL Project Manager
Office of Water Quality
Indiana Department of Environmental Management
100 N. Senate Ave.
Indianapolis, Indiana 46204-2251
Phone: (317) 308-3204
Fax: (317) 308-3219
E-mail: [email protected]
http://www.idem.IN.gov/nps/2652.htm