West Virginia Department of Environmental Protection August 6, 2014 Moorefield City Hall South...
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Transcript of West Virginia Department of Environmental Protection August 6, 2014 Moorefield City Hall South...
West Virginia Department West Virginia Department of Environmental of Environmental
ProtectionProtection
August 6, 2014
Moorefield City Hall
South Branch Potomac &South Branch Potomac &Shenandoah Hardy WatershedsShenandoah Hardy WatershedsTMDL Status Update MeetingTMDL Status Update Meeting
Agenda Agenda
““Introduction to TMDLs” recapIntroduction to TMDLs” recap
Overview of South Branch Overview of South Branch Potomac /Shenandoah Hardy Potomac /Shenandoah Hardy Watersheds TMDL Project & Watersheds TMDL Project & StatusStatus
Overview of Allocation Strategies Overview of Allocation Strategies
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 How much pollutant a stream can receive and remain healthyreceive and remain healthy
Pollution Budget - prescribes reductions Pollution Budget - prescribes reductions (where needed) of pollutants that result (where needed) of pollutants that result in the restoration of an impaired stream in the restoration of an impaired stream
TMDL development required by TMDL development required by Clean Water Act for streams Clean Water Act for streams impaired by a pollutantimpaired 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 WLAs - pollutant loads from “point sources” from “point sources” Discharge from pointDischarge from point Need NPDES permitNeed NPDES permit
LAs - pollutant loads LAs - pollutant loads from “nonpoint sources” from “nonpoint sources” and backgroundand background Precipitation/runoff Precipitation/runoff
drivendriven 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 West Virginia Water Quality Standards are codified in 47
CSR 2CSR 2 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 enumerated in the 303(d) listImpaired streams enumerated in the 303(d) list
West Virginia Section 303(d) List / Integrated Report
Numeric Criteria of ConcernNumeric Criteria of Concern Fecal ColiformFecal Coliform
Water Contact Recreation/Public Water SupplyWater Contact Recreation/Public Water Supply Shall not exceed 200 counts/100ml as a monthly geometric Shall not exceed 200 counts/100ml as a monthly geometric
mean (5 samples/month) mean (5 samples/month) Nor to exceed 400 counts/100 ml in more than 10% of Nor to exceed 400 counts/100 ml in more than 10% of
samples in a monthsamples in a month
Total IronTotal Iron Aquatic Life/Public Water SupplyAquatic Life/Public Water Supply
Not to exceed 1.5 mg/l as a 4 day average concentration Not to exceed 1.5 mg/l as a 4 day average concentration more than once in a three year period more than once in a three year period
Not to exceed 1.0 mg/l as a 4 day average concentration Not to exceed 1.0 mg/l as a 4 day average concentration more than once in a three year period (S. F. Lunice - trout)more than once in a three year period (S. F. Lunice - trout)
Public Water Supply - 1.5 mg/l Public Water Supply - 1.5 mg/l
Numeric Criteria of ConcernNumeric Criteria of Concern
Dissolved OxygenDissolved Oxygen All usesAll uses
Unt/Robinson Run RM 2.84 Unt/Robinson Run RM 2.84 (Warmwater)(Warmwater)
Not less than 5.0 mg/l at any timeNot less than 5.0 mg/l at any time South Fork/Lunice Creek (Troutwaters)South Fork/Lunice Creek (Troutwaters)
Not less than 7.0 mg/l in spawning areas Not less than 7.0 mg/l in spawning areas and in any case not less that 6.0 mg/l at and in any case not less that 6.0 mg/l at any timeany time
Numeric Criteria of Concern (fecal)Numeric Criteria of Concern (fecal)
Fecal coliform is primary pollutant of concernFecal coliform is primary pollutant of concern
Fecal TMDLs for Anderson Run & Mill Creek Fecal TMDLs for Anderson Run & Mill Creek will superceede EPA TMDLswill superceede EPA TMDLs Undertaken in these watershed due to number of Undertaken in these watershed due to number of
impaired tributariesimpaired tributaries
All All otherother EPA fecal TMDLs will remain in EPA fecal TMDLs will remain in place place InsufficientInsufficient resources to re-evaluate resources to re-evaluate
Numeric Criteria of concern Numeric Criteria of concern (Iron & D.O.)(Iron & D.O.)
IronIron Certain fecal impaired streams were listed as iron Certain fecal impaired streams were listed as iron
impairedimpaired Comprehensive iron modeling was conducted on all 2014 Comprehensive iron modeling was conducted on all 2014
TMDL watershedsTMDL watersheds With no AMD sources in the watersheds, iron impacts are With no AMD sources in the watersheds, iron impacts are
related to sedimentrelated to sediment Draft will present TMDLs for streams impaired by modelingDraft will present TMDLs for streams impaired by modeling
Dissolved Oxygen evaluationDissolved Oxygen evaluation Evaluation will be conducted to determine if sources Evaluation will be conducted to determine if sources
addressed in fecal TMDL will result in improved DO (no addressed in fecal TMDL will result in improved DO (no formal modeling or TMDL for D.O.)formal modeling or TMDL for D.O.)
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
27 named streams in South Branch Potomac & 4 named streams in the Shenandoah Hardy watersheds27 named streams in South Branch Potomac & 4 named streams in the Shenandoah Hardy watersheds
(Mainstems not included)(Mainstems not included)
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)
South Branch South Branch Potomac/Shenandoah Hardy Potomac/Shenandoah Hardy Watersheds Project StatusWatersheds Project 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
Package Plants Package Plants
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
Metals (Fe) SourcesMetals (Fe) Sources Point sourcesPoint sources
Discharges from active quarry operationsDischarges from active quarry operations
Non-mining stormwater industrial dischargesNon-mining stormwater industrial discharges
Construction StormwaterConstruction Stormwater
Nonpoint sourcesNonpoint sources Streambank erosionStreambank erosion Sediment sources (forestry, oil and gas, roads, Sediment sources (forestry, oil and gas, roads,
agriculture, urban/residential) agriculture, urban/residential)
Iron Allocation StrategyIron Allocation Strategy
Reduction of streambank erosion to best Reduction of streambank erosion to best available in watershedavailable in watershed
Reduction of sediment sources, where Reduction of sediment sources, where necessary, to meet TSS loadings equal to 100 necessary, to meet TSS loadings equal to 100 mg/lmg/l
Future growth allowances for stormwater Future growth allowances for stormwater construction of 2.5% of subwatershed acreageconstruction of 2.5% 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
South Branch Potomac/Shenandoah South Branch Potomac/Shenandoah Hardy Watershed TMDL Path Hardy Watershed TMDL Path
ForwardForward DEP/Tetra Tech will allocate loads and DEP/Tetra Tech will allocate loads and
wasteloads and develop draft reportwasteloads 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 DEP will address comments, prepare final draft and submit to EPA for approval draft and submit to EPA for approval (final draft will include Response (final draft will include Response Summary)Summary)
Contact InformationContact Information
Comments should be submitted to Steve Young Comments should be submitted to Steve Young at [email protected] at [email protected] (10 meg limit for (10 meg limit for email)email)
Questions - contact Dave Montali, Jim Laine, Questions - contact Dave Montali, Jim Laine, Mike McDaniel Mike McDaniel (304) 926-0499(304) 926-0499 [email protected], [email protected],
[email protected], or [email protected], or [email protected]@wv.gov
Discussion/Discussion/Questions...Questions...