Middle Ohio North Watershed TMDL Development TMDL Development May 27, 2008 WV DEP WV DEP James Laine...
-
Upload
brycen-chapman -
Category
Documents
-
view
217 -
download
0
Transcript of Middle Ohio North Watershed TMDL Development TMDL Development May 27, 2008 WV DEP WV DEP James Laine...
Middle Ohio North WatershedMiddle Ohio North Watershed TMDL DevelopmentTMDL Development
May 27, 2008May 27, 2008
WV DEP WV DEP James LaineJames Laine
Agenda Background information on Water Quality
Standards, impaired waters and TMDLs Brief history of TMDL development in WV Overview of WVDEP’s TMDL process Discussion of local impaired waters and their
TMDL timeline Pre-TMDL Monitoring Plan for local waters Discussion – Free form questions and answers
What’s a TMDL? “Total Maximum Daily Load” – How
much pollutant a stream can receive and remain healthy
TMDL development required by Clean Water Act for all impaired streams
TMDL is a pollution budget – prescribes reduction of pollutants that result in the restoration of an impaired stream
What’s an impaired stream?
Stream that doesn’t meet water quality standards West Virginia Water Quality Standards are
codified at 47 CSR 2 Standards include designated uses for WV waters
and water quality criteria to protect those uses Criteria can be numeric or narrative Impaired streams (streams that are not meeting
criteria) are on the 303(d) List
Criteria Examples Human Health Protection
Fecal Coliform bacteria (Water Contact)200 counts/100ml as a monthly geometric meanno more than 10% of samples in a month exceed 400
counts/100ml
Human Health/Aquatic Life Protection Total Iron
1.5 mg/l as a 4 day average concentration Not to be exceeded more than once every 3 years
Criteria Examples Narrative Criterion – Biological Impairment
Conditions Not Allowable in State Waters (47 CSR 2-3.2i) “.....no significant adverse impact to the
chemical, physical, hydrologic or biological components of aquatic ecosystems shall be allowed.”
West Virginia TMDL History
TMDL development required by Clean Water Act for all impaired streams
If State doesn’t develop TMDLs, EPA must WV couldn’t (resources), EPA didn’t EPA was sued in 1995, settled suit by
entering into consent decree with plaintiffs, and began developing WV TMDLs
WVDEP TMDL Improvements 48 month process vs. 9
month EPA process Multiple opportunities for
stakeholder input New water quality data vs.
existing data Improved source id and
characterization Synchronized with
Watershed Management Framework
Watershed Management Framework
32 watersheds (8-digit HUC)
5 Hydrologic Groups (A – E)
Geographical way to organize water resource management – Within DEP, watershed assessment, NPDES Permit reissuance and nonpoint source project funding synchronized
WVDEP TMDL development synchronized
TMDL/WMF Synchronization Pre-TMDL monitoring
occurs concurrently with WMF assessment year
TMDL completion six months prior to start of WMF implementation year
5yr WMF cycle/15 year plan3 bites at each HG apple
WVDEP TMDL Process
Stream Selection Pre-TMDL monitoring, source identification and
characterization Contract to model water quality and hydrology Allocation Philosophy Development Report development Finalization
WVDEP TMDL Process
HGA (2004 TMDLs) EPA approved January 2005HGB (2005 TMDLs) HGC (2006 TMDLs) HGD (2007 TMDLs) HGE (2008 TMDLs)HGA2 (2009 TMDLs) Cheat and Lower Blackwater watershedsHGB2 (2010 TMDLs) Lower Kanawha River, Lower Elk River, and New and
Patterson Creeks) HGC2 (2011 TMDLs) Middle Ohio North and Middle Ohio South)
HG C2 TMDL Timeline Stream selection 4/08 – 5/08 Monitoring plan development
3/08-6/08 Outreach (TMDL process +
monitoring plan specifics) 5/08
Monitoring 7/08 – 6/09 Modeling 10/09 – 6/10
HG C2 TMDL Timeline
Outreach (Allocation scenarios)
7/10 - 9/10 Draft TMDLs (Internal Review)
3/11 Outreach (PN/PC on Drafts)
4/11 – 6/11 Finalization (including EPA approval)
12/11
TMDL Stream Selection Process
Evaluate list of impaired waters Consider WMF Spread development over State Maximize efficiency
focus geographically address all known or suspected
impairments
TMDL Development Stream Selection Process
Watershed Management Framework Consideration
Within HG C2, candidate watersheds = Gauley, Lower Guyandotte, Middle Ohio North, Middle Ohio South, Potomac Direct Drains and Tug Fork
TMDL Development Hydrologic Group C2
TMDL Development Stream Selection Process
Statewide Coverage Considerations
Gauley (2008), Potomac Direct Drains (2007) have already had recent TMDL development
Lower Guyandotte and Tug Fork (Previous TMDLs development by EPA)
TMDL Development Stream Selection Process
Evaluated options, resources and constraints DEP proposed TMDLs for known or potential
impairments in Middle Ohio North and Middle Ohio South (* exclusive of Ohio mainstem)
DEP advertised list, and provided opportunity for comment (April 7 – May 6, 2008)
No Comments received Draft List = Final List
TMDL Development Stream Selection Process
Budget allows us to address a limited number of streams
For efficiency, want to stay within major watersheds
Major Watershed Number of Impaired Streams
Number of Streams Sampled
Number of Sample Sites
Middle Ohio North 18 109 163
Middle Ohio South 22 87 135
Total 40 196 298
Impaired Waters in the Middle Ohio North Watersheds
See brochure for listing of streams scheduled for samplingImpairments include
Biological Impairment (cause uncertain)Possible fecal coliform impairmentTotal Iron
Pre-TMDL Monitoring Plan
Goal – to generate robust/ recent data to: Make accurate impairment assessments Calibrate watershed models Quantify the impacts of significant pollutant
sources
Today’s presentation is a preliminary plan; to be refined over next month via WVDEP field recon and stakeholder input
Pre-TMDL Monitoring Plan
Parameters to be sampled include:BIO = Benthic Macroinvertebrate Station FECAL = Fecal Coliform BacteriaFe = Total IronAdditional parameters vary by stream but
could include iron, TSS, D.O., pH, etcA detailed GIS coverage is available upon
request
Pre-TMDL Monitoring Plan
Monitoring period = July 08 – June 09 Sampling frequency
BIO once during index period (Apr – Oct) 1/Month for fecal coliform, TSS, T. Fe, etc Sampling will include flow measurement
Stakeholder Input
General comment regarding plan’s adequacy in addressing goals
Does the plan provide for monitoring of particularly bad or good streams that you know about?
Does the plan provide monitoring sufficient to characterize significant pollutant sources?
Do you have water quality data to contribute?
Future Input Opportunities
Public Meeting to present Draft TMDL and formal Public Notice/Public Comment
– Spring 2011
Public meeting to present allocation scenarios
– Summer 2010
WVDEP Contact Information Contact: Steve Young – [email protected] Tele: (304) 926-0499 Ext 1042; FAX: (304) 926-0496 601 57th Street SE, Charleston WV 25304
www.wvdep.org Under “Offices”, select Division of Water and
Waste Management On right, under Watershed Management, click on
“ Total Maximum Daily Load”
Questions???