comprehensive stormwater management program 10/18/2003 1 comprehensive stormwater management program...
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10/18/2003 1
Comprehensive Stormwater Management Program
Pa SW Mgt SymposiumVillanova University
October 16,2003
Durla Lathia, P.E.
Bureau of Watershed ManagementPa DEP
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Stormwater ManagementChallenging Issues??
Quantity & Quality of Surface Runoff
Impact of SW on Quality of ReceivingWaterbodies (Stream Health)Infiltration and Groundwater RechargeLimit of Available Techniques to Predict Accurate Results
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Stormwater Management Challenges…….
Do Current Regulatory Framework Adequately Accommodate Technical Issues?Do Federal and State Existing/New Requirements Sufficiently Include Local Perspectives?How Receptive Are the Implementing Agencies?Regulations Promote Sustainable Development??Legal Considerations Costs??
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DEP’s Initiative For Public Input for New Directions
15 Water Forums held in 2001Public Identified Stormwater Management as a Consistent Issue, and Wanted a Comprehensive Implementation of Various Water Management Programs
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“…..to improve and sustain ground and surface water quality and quantity ……
Pennsylvania’s Comprehensive Stormwater Management Policy
GOAL:
September 2002
www.dep.state.pa.usDirect Link to “Stormwater”
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Under what authority was the policy issued?
Comprehensive SW Policy
Antidegradation Requirements
Section 93.4a
• Existing In-Stream Water Uses and the Level of Water Quality Necessary to Protect the Existing Uses Shall Be Maintained and Protected
•The Water Quality of High Quality & Exceptional Value Waters Shall Be Maintained & Protected
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Implementation Goals
To successfully implement the Comprehensive Stormwater Management Policy the goals must:Be reasonably attainableTarget and prioritize major obstaclesBe effectively implemented utilizing existing resources
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Comprehensive Stormwater Management Approach
Integration of Planning, Technical and Regulatory Programs Financial Incentives Provide Necessary Technical Tools and Support – BMP Tech Manual
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COMPREHENSIVESW
POLICY
Special Protection
Waters
NPDESConstruction
Permits
NPDESPhase II
MS4 Permits
ACT 167PlanningProgram
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NPDES Construction Permits
Permits require protection of uses and maintenance of water qualityl E/S Control Plan to minimize pollutants from
earth disturbance activities. l Post Construction SW Mgt. Plan
l Permits now emphasize requirement for PCSM Plansl Identification, Assurance for Operation and
Maintenance of BMPs
l Preparedness, Prevention, Contingency Plan
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PCSM PLANSMust Accompany Permit Application
Identifiy BMP’s
BMP’sMUST be Designed and Constructed in accordance with:
DEP Approved Act 167 SW Plan with Water Quality Requirements, if a Plan Exist,
Existing MS4 Municipal Ordinance, IF No Act 167 SW Plan,
A 2-Year - 24 Hour Runoff Volume Difference Management(Post - Pre Development Conditions), If neither Act 167 nor MS4 Municipal Ordinance exists.
A Long Term Maintenance of BMP’s is Required
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Act 167 Stormwater Planning Program
Incorporates hydrologic and hydraulic Evaluation of a Watershed for Existing and Future Land Use Scenario Requires County and Municipal participation Considers Existing Local Regulatory ProgramsRecommends Control of Stormwater Runoff from Development ActivitiesA Recommended Model Ordinance
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NPDES Phase II MS4 Program
“Municipal Separate Storm Sewer System (MS4)”l 20 Urbanized Areasl 929 municipalities, 30 counties, 14 potential municipalities, plus
state and federal institutions (PADOT, PTC, prisons, universities)
Permit Requires Implementation of 6 Minimum Control Measuresl Public Educationl Public Participation & Involvementl Illicit Dischargesl Constructionl Post-constructionl Pollution Prevention/Good Housekeeping
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NPDES II-MS4 PermitFor General Permits, MS4s have Two options:l Follow DEP “SW MGT. PROTOCOL”
l “Pre-approved” Tasks l Relaxed deadlines for Multi-municipal
Efforts, Working on Watershed Based Approach
l Funding Opportunity, if Act 167 Planning is Involved
Or
l Develop own programl Must get DEP approvall No funding
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Expanded Scope of Act 167 Program
In addition to the requirements of the Section 5(b) of the Act, ALL Minimum Control Measures of the NPDES MS4 Permit requirements may be included in a SW Plan, if Counties and Municipalities wish to do so
Funding is also included for the expanded scope
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Act 167 SW Management
Planning
Rate &Volume Control
Water Quality
NPDESMS4
Permit
SpecialProtection
Waters
InfiltrationGroundwater
Recharge
Tailored Municipal
Ordinances
NPDESConstruction
Permit
Financial Assistance
Technical Assistance
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How Does Act 167 SW Planning Implement Comp SW Policy???
Recommend Measures and Techniques to Address Stormwater Runoff Impact with a Goal to Mimic Pre-Development Conditions after Development is Completed.Control Standards for Quantity, Quality,Groundwater Recharge and Stream ProtectionNPDES Regulatory Components Included
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Act 167 SW Planning Status
85 Plans approved for 47 countiesPlans approved after Aug. 2001 contain WQ Components777 Municipalities to enact and implement ordinances42 additional Plans currently under way (23 Counties, 603 Municipalities): All Plans have WQ Components
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IMPACT of COMP. SW POLICY on ACT 167 SW PLANNING
401 Municipalities Sought Funding for NPDES Activities28 Plans Initiated(include MS4 elements)
Increased Budget Demand $$$$ !!!Increased Education/OutreachIncreased Central/Region Office Coordination
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How About Funding $$$$??
Yes….$$$$$ !! Funding Available to Counties and Municipalities, Up to 75%, for the Costs of Preparing/Implementing SW Plans & MS4 Management Measures! Over $13 Million Appropriated To Date$1.2 Million average Appropriation
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MS4 Permit Activities
General Permit Documents Finalized Dec 2002 and Obtained EPA Approval6 Outreach workshops for the DEP Regions and Municipalities held in February 2003929 Munic., 30 Counties Required to get Permits784 Permit Applications Received186 Waiver Requests Received20 Permits Issued20 Waivers Approved
SW Files
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STORMWATER ORDINANCE
MS4 Ordinance(available on DEP Website) A General SW Ordinance which includes all the components of Stormwater Management. Counties include this ordinance in their SW Plans, subject to watershed specific modifications. Municipalities, not part of a SW Plan, are encouraged to consider adoption
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Pa BMP Technical Manual
Tech Manual to Provide Computational Procedures and Specifications- It will NOT Be a Regulatory Handbook18 Month ProjectConsultant Has Been SelectedOversight Committee Members AppointedFirst Oversight Committee Meeting Held on October 10, 2003DEP Contacts: Dennis Stum/Ken Reisinger
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Stormwater ManagementContinuing Challenges!!!
Refinement of Technical ProceduresUnderstanding How The Hydrologic Process WorksAre our Goals and Targets Reasonable and Achievable?Education:Acceptance by Local Officials and PublicCan We Support $$$$ Demands??