big raccoon creek watershed tmdl stakeholder meeting june 26, 2013
TRANSCRIPT
Big Raccoon CreekWatershed 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
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 IBCTMDL development
Biological Data
• 20% (6/28) sites had Impaired Biological Communities
Scoring Indices
IBI QHEIExcellent 53-60 ≥ 70
Good 45-52 55-69Fair 35-44 43-54Poor 23-34 30-42
Very Poor 0-22 < 30
Chemistry DataNo obvious
chemical impairments
DO=13.3
DO=3.5TP=0.68
DO=2.1
DO=3.5
DO=2.5TP=0.33TSS=74
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
• 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)
Impaired Biological Communities (IBC) Results
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
IDEM Data & USGS Gage 03340800 Flow DataUpstream Drainage Area is 27.38 Square Miles
Moist Conditions
Dry Conditons
Mid-Range Flows
Low Flows
High Flows
E. coli Load Reductions Needed
HUC 12 RankingMaximum
[CFU/100mL]
E. coli Load Reduction Needed(Billion organisms/
Day)
% Load Reduction to meet WQS
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
Creek4 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
Haw Creek 7 2419.6 964 86.04
Phosphorus and TSS Load Reductions Needed
HUC 12 RankingMaximum
[mg/L]
TP Load Reduction Needed
(lbs/ Day)
% Load Reduction to meet WQS
Headwaters Big Raccoon Creek
1 0.68 0.88 55.88
Little Raccoon Creek
2 0.33 0.24 9.09
HUC 12Maximum
[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 ProjectsConservation 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 AreasSubwatershed PPIA
RankPotential 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
Grazing Land ManagementAlternative Watering Systems
Increase Riparian BuffersLivestock Exclusion Fencing
Grassed WaterwaysReduce Sediment Loads
BMP Implementation Areas
TMDL Process
Big Raccoon CreekWatershed 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 ManagerAli MeilsTMDL Project ManagerOffice of Water QualityIndiana Department of Environmental Management100 N. Senate Ave.Indianapolis, Indiana 46204-2251
Phone: (317) 308-3204Fax: (317) 308-3219E-mail: [email protected]://www.idem.IN.gov/nps/2652.htm