Download - Stormwater Regulations NC Division Of Water Quality DPPEA Technical Sharing Session May 25, 2004
Stormwater RegulationsStormwater Regulations
NC Division Of Water Quality
DPPEA Technical Sharing Session
May 25, 2004
•Increased ImperviousnessIncreased Imperviousness
•Increased RunoffIncreased Runoff
•Increased PollutantsIncreased Pollutants
•Impacts to StreambanksImpacts to Streambanks
•Erosion/SedimentationErosion/Sedimentation
Why Be Concerned About StormwaterWhy Be Concerned About Stormwater
Why be Concerned about Stormwater?Why be Concerned about Stormwater?
Declining water qualityDeclining water quality
Increasing demand for clean Increasing demand for clean waterwater
UrbanizationUrbanization:: Population doubling every 50 Population doubling every 50
yearsyears 88% increase in urban area 88% increase in urban area
from 1982-1997 (USDA-NRCS)from 1982-1997 (USDA-NRCS)
State Stormwater Programs
State Stormwater Management ProgramState Stormwater Management Program
Water Supply Watershed Protection Water Supply Watershed Protection
ProgramProgram
401 Water Quality Certification Program 401 Water Quality Certification Program
Nutrient Sensitive Waters ProgramsNutrient Sensitive Waters Programs
General Management General Management StrategyStrategy
State StormwaterState Stormwater
New Development / RedevelopmentNew Development / Redevelopment
Minimize Impervious Cover-12% to Minimize Impervious Cover-12% to 30% BUA30% BUA
Use Passive Stormwater ManagementUse Passive Stormwater Management
Engineered Controls Where Engineered Controls Where Necessary, to remove 85% TSSNecessary, to remove 85% TSS
Approvals From State or Local Gov.Approvals From State or Local Gov.
NPDES StormwaterNPDES Stormwater
Phase IPhase I Industrial ActivitiesIndustrial Activities Construction Sites Construction Sites 5 acres 5 acres Large and Medium MS4sLarge and Medium MS4s
Phase IIPhase II Small MS4sSmall MS4s Construction Sites Construction Sites 1 acre 1 acre Industrial No-Exposure CertificationIndustrial No-Exposure Certification
NPDES Industrial Coverage
Manufacturing/Process Type Manufacturing/Process Type ActivitiesActivities
Private and Public EntitiesPrivate and Public Entities
Comprehensive Stormwater Pollution Comprehensive Stormwater Pollution Prevention PlansPrevention Plans
Regular Review and AssessmentRegular Review and Assessment
Construction NPDES CoverageConstruction NPDES Coverage
Required Required In AdditionIn Addition to E&SC Plan to E&SC Plan
Point Source Discharges of StormwaterPoint Source Discharges of Stormwater
Projects Greater Than One AcreProjects Greater Than One Acre
Permit ConditionsPermit ConditionsLimitations & ControlsLimitations & Controls
Submit and Receive Approved E & S PlanSubmit and Receive Approved E & S Plan
Comply With Approved E & S PlanComply With Approved E & S Plan
Materials Handling - fuel, oil, waste, etc.Materials Handling - fuel, oil, waste, etc.
Chemical Application - fertilizers, etc.Chemical Application - fertilizers, etc.
Operation and MaintenanceOperation and Maintenance
Municipal NPDES CoverageMunicipal NPDES Coverage
Automatically Designated - Automatically Designated - Urbanized Urbanized
AreasAreas
State Designated Public EntitiesState Designated Public Entities
Petitioned Entities That Are State Petitioned Entities That Are State
DesignatedDesignated
2000 USA Census Urbanized Areas2000 USA Census Urbanized Areas
Automatic designation by USEPA of Automatic designation by USEPA of municipal separate storm sewer systems municipal separate storm sewer systems (MS4s)(MS4s)
North Carolina - NPDES Stormwater Program
HYDE
DARE
PITT
WAKE
DUPLIN
BLADEN
PENDER
BERTIE
UNION
WILKES
NASH
CARTERET
ROBESON
SAMPSON
MOORE
CRAVEN
ONSLOW
BEAUFORT
HALIFAX
COLUMBUS
SWAIN
ASHE SURRY
ANSON
WAYNE
BURKE
BRUNSWICK
JOHNSTON
CHATHAM
IREDELL
RANDOLPH
JONES
MACON
HOKE
LEE
TYRRELL
ROWAN
HARNETT
GUILFORD
PAMLICO
MARTIN
BUNCOMBE
STOKES
DAVIDSON
LENOIR
JACKSON
STANLY
HAYWOOD
GATES
FRANKLIN
WARREN
MADISON
PERSON
GRANVILLE
CUMBERLAND
WILSON
ORANGE
YADKIN
POLK
CASWELL
DAVIE
CALDWELL
RICHMOND
FORSYTH
GASTON
CLAY
CHEROKEE
ROCKINGHAM
CATAWBA
RUTHERFORD
ALAMANCE
CLEVELAND
VANCE
EDGECOMBE
MCDOWELL
YANCEY
CURRITUCK
AVERY
MECKLENBURG
LINCOLN
CAMDENNORTHAMPTON
GRAHAM
DURHAM
MONTGOMERYCABARRUS
HERTFORD
GREENE
WATAUGA
WASHINGTON
SCOTLAND
HENDERSON
CHOWAN
TRANSYLVANIA
PERQUIMANS
MITCHELL
ALEXANDER
PASQUOTANK
ALLEGHANY
NEW HANOVER
Counties
1990 Census2000 CensusPhase I
Municipalities1990 Census2000 CensusPhase I
North Carolina NPDES Stormwater Program
Automatic Coverage
HYDE
DARE
PITT
WAKE
DUPLIN
BLADEN
PENDER
BERTIE
UNION
WILKES
NASH
CARTERET
ROBESON
SAMPSON
MOORE
CRAVEN
ONSLOW
BEAUFORT
HALIFAX
COLUMBUS
SWAIN
ASHE SURRY
ANSON
WAYNE
BURKE
BRUNSWICK
JOHNSTON
CHATHAM
IREDELL
RANDOLPH
JONES
MACON
HOKE
LEE
TYRRELL
ROWAN
HARNETT
GUILFORD
PAMLICO
MARTIN
BUNCOMBE
STOKES
DAVIDSON
LENOIR
JACKSON
STANLY
HAYWOOD
GATES
FRANKLIN
WARREN
MADISON
PERSON
GRANVILLE
CUMBERLAND
WILSON
ORANGE
YADKIN
POLK
CASWELL
DAVIE
CALDWELL
RICHMOND
FORSYTH
GASTON
CLAY
CHEROKEE
ROCKINGHAM
CATAWBA
RUTHERFORD
ALAMANCE
CLEVELAND
VANCE
EDGECOMBE
MCDOWELL
YANCEY
CURRITUCK
AVERY
MECKLENBURG
LINCOLN
CAMDENNORTHAMPTON
GRAHAM
DURHAM
MONTGOMERYCABARRUS
HERTFORD
GREENE
WATAUGA
WASHINGTON
SCOTLAND
HENDERSON
CHOWAN
TRANSYLVANIA
PERQUIMANS
MITCHELL
ALEXANDER
PASQUOTANK
ALLEGHANY
NEW HANOVER
Counties
PSD - >45K
1990 Census2000 CensusPhase I
Municipalities1990 Census2000 Census
PSDPSD - 10K/1KPhase I
PSD = Possible State Designee
North Carolina - NPDES Stormwater Program
North Carolina - NPDES Stormwater Program
North Carolina NPDES Stormwater Program
Automatic & Possible State Designation
Minimum Control ElementsMinimum Control Elements
Public Education and OutreachPublic Education and Outreach
Public Involvement/ParticipationPublic Involvement/Participation
Illicit Discharge Detection & EliminationIllicit Discharge Detection & Elimination
Construction Site Runoff ControlConstruction Site Runoff Control
Post-construction Stormwater Post-construction Stormwater
ManagementManagement
Pollution Prevention/Good HousekeepingPollution Prevention/Good Housekeeping
Post Construction Runoff ControlPost Construction Runoff Control
New development and redevelopmentNew development and redevelopment 1-year / 24-hour storm control1-year / 24-hour storm control 85% average annual TSS removal85% average annual TSS removal Operation & maintenance of BMPsOperation & maintenance of BMPs Specific requirements for Class SA, Tr, Specific requirements for Class SA, Tr,
NSWNSW
Penalties for Penalties for NoncomplianceNoncompliance
Penalty not to exceed $25,000 per day per Penalty not to exceed $25,000 per day per violation.violation.
Information SourcesInformation Sources
Division of Water Quality Division of Water Quality Stormwater and General Permits UnitStormwater and General Permits Unit
http://h2o.enr.state.nc.us/su/stormwater.htmlhttp://h2o.enr.state.nc.us/su/stormwater.html
Environmental Protection Agency http://cfpub.epa.gov/npdes/http://cfpub.epa.gov/npdes/
GROUTED RIP RAP ENERGY
DISSIPATOR
Grouted rip rap replaced with “wet
meadow” and sediment forebay