SWMP : Stormwater Management Plan MCM : Minimum Control Measures - - PowerPoint PPT Presentation

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SWMP : Stormwater Management Plan MCM : Minimum Control Measures - - PowerPoint PPT Presentation

CWA : Clean Water Act NPDES : National Pollutant Discharge Elimination System MS4 : Municipal Separate Storm Sewer System PAG-13 : Pennsylvania General Permit SWMP : Stormwater Management Plan MCM : Minimum Control Measures BMP : Best


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CWA : Clean Water Act NPDES : National Pollutant Discharge Elimination System MS4 : Municipal Separate Storm Sewer System PAG-13 : Pennsylvania General Permit SWMP : Stormwater Management Plan MCM : Minimum Control Measures BMP : Best Management Practices TMDL : Total Maximum Daily Load

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Municipal Separate Storm Sewer

(It sounds cooler than MSSS)

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Municipal Separate Storm Sewer

(It sounds cooler than MSSS)

Drains, ditches, curbs, and gutters that move stormwater from one place to another Does not connect to the sanitary sewer system and does not lead to a wastewater treatment plant System owned or

  • perated by a

public agency, such as a city, town, county, flood control district, state, or federal agency

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1972 Clean Water Act

Regulate pollutants discharged into water Implement pollution control programs Fund sewage treatment plant construction under the construction grants program Recognized the need for planning

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1972 Clean Water Act

Good start, but…

Two of every five waterways are still

considered to be impaired by pollution What’s the problem?

STORMWATER RUNOFF

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  • 86,000 Str

tream am mi miles

  • 83,438

Assessed Aquatic Life

  • 16,000 (19%)

Impaired

  • 5,000

Assessed Recreation

  • 1,800 (36%) -

Impaired

  • Ag

Agri ricultu ture re

  • AM

AMD

  • Urb

rban an Runoff

Causes ALU Sources

  • Silta

tati tion

  • Meta

tals

  • pH

pH

  • Nutr

trients ts

  • Wat

ater r Flow/Va Vari riab ability ty

Source: DEP 2014 Pennsylvania Integrated Water Quality Monitoring & Assessment Report

Pennsylvania Water Quality

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Source: DEP 2012 Pennsylvania Integrated Water Quality Monitoring & Assessment Report

Status of Aquatic Life Use

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Federal Regulation Time Line

1972

Clean Wa Water A Act

1987

Section 319 319 establishes National program to control NPS pollution and grants

1990

NPDES Ph 1 - medium to large cities – CSO

1999

NPDES P Ph 2 – MS MS4 (municipal separate storm sewer systems )

  • townships/boroughs
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Pennsylvania Regulation Time Line

2002

PA PA issues f first Ph t Phas ase 2 2 (Municipal Stormwater Separate Storm Sewer System) permits

2011

PA PA updat ates Ph Phas ase 2 2 General al Permit ( (PAG-13) 13)

2012

946 946 Permits Submitted

2013

PA PA conti tinues to to review permits; 30% approved

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PA MS4 Communities

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Close-up on Philadelphia Region

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Minimum Control Measures in your Stormwater Management Plan (SWMP)

Public education and outreach Public involvement and participation Illicit discharge detection and elimination Construction site runoff control Post-construction stormwater management in new development and redevelopment Pollution prevention and good housekeeping for municipal operations and maintenance

MCMs in your SWMP

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Every MCM has its BMPs

Public education and outreach

Educate the community on the pollution potential of common activities Increase awareness of links between land activities, and local water resources Give the public specific actions that reduce stormwater pollution-potential Create a plan ID audiences (business, homeowners, schools) Newsletter Distribute educational materials

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Every MCM has its BMPs

Public involvement and participation

Facilitate opportunities for direct action and volunteer programs Establish watershed groups and conservation corps teams Develop citizen positions on a local stormwater management panel Develop written program Public review of ordinances Involve target audiences

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Every MCM has its BMPs

Illicit discharge detection

Develop a storm sewer system map Develop an ordinance prohibiting illicit discharges Create a plan to detect and address these illicit discharges Start an education program on the hazards associated with illicit discharges

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Every MCM has its BMPs

Construction site runoff control

Develop requirements to implement erosion and sediment control BMPs Establish ordinances and procedures for reviewing construction site plans Establish procedures for inspections and enforcement of stormwater requirements at construction sites.

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Every MCM has its BMPs

Post-construction SWM

Create strategies to implement a combination of structural and non-structural BMPs Develop an ordinance to address post-construction runoff at new developments Establish a program to ensure adequate long-term

  • peration and maintenance
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Every MCM has its BMPs

Pollution Prevention

Develop inspection and maintenance procedures and schedules for SWM BMPs Treat pollutants from transportation infrastructure, waste transfer stations, etc. Establish procedures for properly disposing of pollutants removed from the MS4 Identify ways to incorporate water quality controls into flood management projects.

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Is my municipality eligible for coverage under PAG-13?

Are any of your small MS4s regulated? No Yep Does your regulated MS4 meet all criteria for General Permit Eligibility? Your municipality is eligible for coverage under PAG-13! Yep No MS4 Permit is needed No You must apply for an individual NPDES MS4 Permit

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Municipalities are required to submit a Notice of Intent (NOI)

1.) Multi-Municipal Joint Application 2.) MS4 Operator Information 3.) Urbanized Area Information 4.) Description of Receiving Waters 5.) Stormwater Management Program Plan

NOIs have a timeline of 5 years

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Contain measurable goals for the six MCMs Contain Best Management Practices for each MCM Enact or implement either: An MS4 Stormwater Management Ordinance A Model Ordinance from an applicable Act 167 Stormwater Management Plan An ordinance that satisfies an MS4 Stormwater Management Ordinance Checklist Submit a MS4 TMDL Plan if applicable

Stormwater Management Program Plans must:

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Total Maximum Daily Loads

  • Maximum

amount of pollution that a water body can receive and still meet water quality standards

Water supply Recreation Aquatic life Agriculture Designated Uses

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Calculations consider: –Point source pollution –Non-point source pollution –Background –Margin of safety factor

Total Maximum Daily Loads

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  • Impaired waterways require pollution reduction

plans; MS4s considered point source.

  • Tool to address past impacts.

Wissahickon has sediment TMDL: – Munics submit TMDL Plan with MS4 permit – Show measureable progress (e.g. lbs. sediment/year reductions) – Control measures: riparian forest buffers, tree planting, stormwater basin retrofits, restored stream bank…

Total Maximum Daily Loads

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