Zahid Chaudhry ITO-TAGIS West Virginia Department of Environmental Protection
West Virginia Department of Environmental Protection
description
Transcript of West Virginia Department of Environmental Protection
West Virginia West Virginia Department of Department of Environmental Environmental
ProtectionProtection
August 7, 2014
Cabelas
Wheeling
Upper Ohio North Watershed Upper Ohio North Watershed TMDLTMDL
Status Update MeetingStatus Update Meeting
Agenda Agenda
““Introduction to TMDLs” recapIntroduction to TMDLs” recap
Overview of Upper Ohio North Overview of Upper Ohio North
Watershed TMDL Project & StatusWatershed TMDL Project & Status
Overview of Allocation Strategy Overview of Allocation Strategy
Discussion – Free form questions Discussion – Free form questions
and answers and answers
What’s a TMDL?What’s a TMDL?
““Total Maximum Daily Load” Total Maximum Daily Load”
How much pollutant a stream can receive and How much pollutant a stream can receive and
remain healthyremain healthy
Pollution Budget - prescribes reductions (where Pollution Budget - prescribes reductions (where
needed) of pollutants that result in the needed) of pollutants that result in the
restoration of an impaired stream restoration of an impaired stream
TMDL development required by Clean Water TMDL development required by Clean Water
Act for streams impaired by a pollutantAct for streams impaired by a pollutant
TMDL = TMDL = WLA + WLA + LA + MOS LA + MOS = “sum of”= “sum of”
WLA = “wasteload WLA = “wasteload
allocations” allocations”
LA = “load allocations”LA = “load allocations”
MOS = “margin of MOS = “margin of
safety” safety”
WLAs - pollutant loads for “point WLAs - pollutant loads for “point
sources” sources”
Discharge from pointDischarge from point
Need NPDES permitNeed NPDES permit
LAs - pollutant loads for “nonpoint LAs - pollutant loads for “nonpoint
sources” and backgroundsources” and background
Precipitation/runoff drivenPrecipitation/runoff driven
No permit requiredNo permit required
What’s an impaired stream?What’s an impaired stream? Stream that doesn’t meet Stream that doesn’t meet water quality standardswater quality standards
West Virginia Water Quality Standards are codified in 47 CSR West Virginia Water Quality Standards are codified in 47 CSR
22
http://www.dep.wv.gov/WWE/Programs/wqs/Documents/http://www.dep.wv.gov/WWE/Programs/wqs/Documents/
Rules/WVDEP_47CSR2_WQS_FinalRule%206_27_2011.pdfRules/WVDEP_47CSR2_WQS_FinalRule%206_27_2011.pdf
Standards include “Designated UsesStandards include “Designated Uses“
for WV waters and “water quality criteria”for WV waters and “water quality criteria”
to protect those usesto protect those uses
Criteria can be numeric or narrative Criteria can be numeric or narrative
Impaired streams are enumerated in the 303(d) listImpaired streams are enumerated in the 303(d) list
West Virginia Section 303(d) List / Integrated Report
Criteria of ConcernCriteria of Concern
Fecal ColiformFecal Coliform Water Contact Recreation; Public Water SupplyWater Contact Recreation; Public Water Supply 200 counts/100ml as a monthly geometric mean 200 counts/100ml as a monthly geometric mean
(minimum 5 samples)(minimum 5 samples) no more than 10% of samples in a month exceed no more than 10% of samples in a month exceed
400 counts/100ml400 counts/100ml
Total Iron (Holbert Run)Total Iron (Holbert Run) Aquatic Life/Public Water SupplyAquatic Life/Public Water Supply Not to exceed 1.5 mg/l as a 4 day average Not to exceed 1.5 mg/l as a 4 day average
concentration more than once in a three year concentration more than once in a three year periodperiod
Public Water Supply 1.5 mg/lPublic Water Supply 1.5 mg/l
Narrative CriteriaNarrative CriteriaPrevious 47 CSR 2 - 3.2.i AssessmentPrevious 47 CSR 2 - 3.2.i Assessment
Based on Benthic Macroinvertebrates (aquatic bugs)Based on Benthic Macroinvertebrates (aquatic bugs)
Stream scored based on abundance and type of Stream scored based on abundance and type of
bugs presentbugs present
Streams with impaired communities were placed on Streams with impaired communities were placed on
the 303(d) list and slated for TMDLsthe 303(d) list and slated for TMDLs
Narrative CriteriaNarrative Criteria2012 Legislative Changes2012 Legislative Changes
Senate Bill 562 passed by the 2012 West Virginia Senate Bill 562 passed by the 2012 West Virginia Legislature amended the WV Water Pollution Control Act Legislature amended the WV Water Pollution Control Act
Requires DEP to develop and secure legislative approval of Requires DEP to develop and secure legislative approval of new rules to interpret 47 CSR 2-3.2.inew rules to interpret 47 CSR 2-3.2.i
Section 22-11-7b : Section 22-11-7b : http://www.legis.state.wv.us/wvcode/ChapterEntire.cfm?http://www.legis.state.wv.us/wvcode/ChapterEntire.cfm?chap=22&art=11chap=22&art=11
No biological TMDLs are part of this effortNo biological TMDLs are part of this effort Streams currently listed as biologically impacted will Streams currently listed as biologically impacted will
undergo Stressor Identification processundergo Stressor Identification process
Stressor Identification ProcessStressor Identification Process
Method to evaluate stressor/s of Method to evaluate stressor/s of biologically impacted streamsbiologically impacted streams
Process used to evaluate if numeric Process used to evaluate if numeric criteria TMDLs (iron, fecal) will criteria TMDLs (iron, fecal) will address biological stressorsaddress biological stressors
Information will be retained and may Information will be retained and may be used to delist streams in the futurebe used to delist streams in the future
Impaired WatersImpaired Waters
Seven named streams (excludes Mainstem Seven named streams (excludes Mainstem Ohio)Ohio)
Sample sites and suites
MDAS ModelMDAS Model
Watershed Model Watershed Model
Runs dynamically on a 1-hour time stepRuns dynamically on a 1-hour time step
Represents land use (hydrologic Represents land use (hydrologic
processes) and river processesprocesses) and river processes
Can include nonpoint and point sourcesCan include nonpoint and point sources
Streambank Erosion component - Bank Streambank Erosion component - Bank
Pin StudyPin Study
Modeling ApproachModeling Approach
Segment watershedSegment watershed
Configure model to represent all sourcesConfigure model to represent all sources
Calibrate model for hydrology (flow) and water qualityCalibrate model for hydrology (flow) and water quality Iron Iron FecalFecal SedimentSediment
Run MDAS for Baseline conditions (existing)Run MDAS for Baseline conditions (existing)
Run MDAS for TMDL scenario(s)Run MDAS for TMDL scenario(s)
Upper Ohio North WatershedUpper Ohio North WatershedProject StatusProject Status
Completed:Completed: Monitoring Monitoring
Source tracking Source tracking
Baseline Modeling Baseline Modeling
Bio. Stressor IdsBio. Stressor Ids
Status Update Status Update
MeetingMeeting
Next Steps:Next Steps:
AllocationsAllocations
Draft Document Draft Document
Public MeetingPublic Meeting
EPA ApprovalEPA Approval
Top-down approachTop-down approach
Headwater subwatersheds Headwater subwatersheds
analyzed firstanalyzed first
Allocation strategy dictates Allocation strategy dictates
order and magnitude of reductionorder and magnitude of reduction
If necessary, loads are reduced then routed If necessary, loads are reduced then routed to downstream subwatershedto downstream subwatershed
Allocation Methodology Allocation Methodology
WVDEP priorities:WVDEP priorities: Ensure criteria compliance at all sws outletsEnsure criteria compliance at all sws outlets
Target the primary causative sourcesTarget the primary causative sources
Strategy in generalStrategy in general Critical conditions must be consideredCritical conditions must be considered
Sometimes only one significant source in swsSometimes only one significant source in sws
Always some amount of professional Always some amount of professional judgementjudgement
Allocation Methodology Allocation Methodology
Fecal Coliform SourcesFecal Coliform Sources Point sourcesPoint sources
MS4 areas MS4 areas
Nonpoint sourceNonpoint source Failing septic systems and/or straight pipe Failing septic systems and/or straight pipe
illicit dischargesillicit discharges
Stormwater runoff from urban/residential Stormwater runoff from urban/residential landslands
Stormwater runoff from agricultural landsStormwater runoff from agricultural lands
Fecal Coliform StrategyFecal Coliform Strategy
100% reduction of all untreated sewage 100% reduction of all untreated sewage discharges (failing septics, straight pipes) discharges (failing septics, straight pipes) as required by WV Bureau for Public as required by WV Bureau for Public Health regulationsHealth regulations
Reductions based on Sensitivity analysis Reductions based on Sensitivity analysis to address severity of agricultural vs. to address severity of agricultural vs. urban/residential impacts urban/residential impacts
Holbert Run Metals (Fe) Sources & Holbert Run Metals (Fe) Sources & Reduction StrategyReduction Strategy
Nonpoint sourcesNonpoint sources Streambank ErosionStreambank Erosion
Sediment sources (forestry, oil and gas, roads, agriculture, Sediment sources (forestry, oil and gas, roads, agriculture,
urban/residential) urban/residential)
StrategyStrategy
Reduction of streambank erosion to best available in the Reduction of streambank erosion to best available in the
watershedwatershed
Reduction of sediment sources, where necessary, to meet Reduction of sediment sources, where necessary, to meet
TSS loadings equal to 100 mg/lTSS loadings equal to 100 mg/l
Future growth allowance for stormwater construction of Future growth allowance for stormwater construction of
2.5% of subwatershed acreage2.5% of subwatershed acreage
WVDEP TMDL Process (4 WVDEP TMDL Process (4 yrs)yrs)
Stream Selection - (4/2011)Stream Selection - (4/2011)
Pre-TMDL monitoring, source identification and Pre-TMDL monitoring, source identification and
characterization - (7/2011 – 6/2012)characterization - (7/2011 – 6/2012)
Contract to model water quality and hydrology – Contract to model water quality and hydrology –
(1/2013) (1/2013)
Determine baseline condition and allocate Determine baseline condition and allocate
pollutant loads – in progresspollutant loads – in progress
Report developmentReport development
Finalization and EPA approvalFinalization and EPA approval
Upper Ohio North WatershedUpper Ohio North WatershedTMDL Path ForwardTMDL Path Forward
DEP/Tetra Tech will allocate loads and DEP/Tetra Tech will allocate loads and
wasteloads as needed and develop draft reportwasteloads as needed and develop draft report
Formal public comment period and public Formal public comment period and public
meeting on the draft TMDLs in meeting on the draft TMDLs in Fall 2014Fall 2014
DEP will address comments, prepare final draft DEP will address comments, prepare final draft
and submit to EPA for approval (final draft will and submit to EPA for approval (final draft will
include Response Summary)include Response Summary)
Contact InformationContact Information
Comments should be submitted to Steve Young at Comments should be submitted to Steve Young at
[email protected] [email protected] (10 meg limit for email)(10 meg limit for email)
Questions - contact Dave Montali, Jim Laine, Mike Questions - contact Dave Montali, Jim Laine, Mike
McDaniel McDaniel
(304) 926-0499(304) 926-0499
[email protected], [email protected], or [email protected], [email protected], or
[email protected]@wv.gov
Discussion/Discussion/Questions...Questions...