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Community InnovationChallenge Grant● Metropolitan Area
Council (MAPC)● Neponset River
Watershed Association
● Boston● Canton● Dedham● Foxboro● Medfield● Milton● Norwood● Randolph● Sharon● Stoughton● Walpole● Westwood
Community InnovationChallenge Grant● MAPC
◦ Martin Pillsbury, Environmental Planning Director◦ Julie Conroy, Senior Environmental Planner
● Neponset River Watershed Association◦ Ian Cooke, Executive Director◦ Steve Pearlman, Advocacy Director◦ Nancy Fyler, Water Conservation Coordinator◦ Sarah Bounty, Environmental Engineer
Collaborative Coordination
• No More “Recreating the Wheel”
• Resource Sharing
• Shared Technical Services
• Planning at the Watershed Scale
• SWMP Development
• Collaborative Governance
• Ongoing Leadership for SW Management
Collaborative Coordination
Source: Lower Merion Conservancy, PA
Stormwater Management Plan:Education and Outreach
Key Goals:1. Ensure That
Towns Meet New MS4 Permit Requirements
2. Garner Political Support for Stormwater Management
● Pollutants of concern for impaired and TMDL waters and priority waters
● Min. of 2 ed. messages over the permit term to key audiences: ○ residential,○ businesses/commercial/institutional,○ developers,○ industrial
● Impact of stormwater discharges on water bodies (esp. impaired or priority waters)
● Steps/activities public can take to reduce the pollutants in stormwater runoff
Stormwater Management Plan:Public Involvement and Participation
Key Goals:1. Provide
opportunities to engage the public
2. Public participate in the implementation of the SWMP
3. Garner Political Support for Stormwater Management
● State public notice requirements
● Annual opportunities for SWMP implementation
Education and Public Participation
● Subcommittee ◦ Meet 2-3 times◦ Desired audience,
messages, delivery method
◦ Stand-alone vs regional implementation
● Draft materials◦ Brochures, flyers,
posters● Website
Illicit Discharge Detection and Elimination - IDDE● GoalPlan the most efficient way for the Neponset Watershed to meet new MS4 permit requirements on IDDE:
◦ More detailed mapping ◦ Detailed IDDE program/procedures◦ Implementation in all catchments◦ Outfall monitoring◦ Eliminate illicit connections◦ Annual reporting
Illicit Discharge Detection and Elimination - IDDE● Deliverables –
◦ Language for use in SWMP ◦ Map and Data table (outfalls and receiving waters)◦ Initial ranking of outfalls for investigation◦ Information needed to budget for required work◦ Evaluation of regional implementation options
Information Request - IDDE● GIS data on storm drain and sewer infrastructure, as
well as land use ◦ Location of outfalls
● Outfall inspection data● Any existing IDDE plans
Review of Local Bylaws Impacting Stormwater Management● Stormwater Bylaws● Wetlands Bylaws● Other Local Bylaws that may discourage Low
Impact Development (e.g. planning, zoning, subdivision)
Stormwater Bylaws● Current EPA Municipal Storm Sewer General Permit requires:
◦ stormwater bylaws for private development and redevelopment of 1 acre or more.
◦ Demonstration by towns of “how their program will … ensure that (MS4) discharges will not cause an instream exceedance of water quality standards.”
● New 2014 MA MS4 Gen’l Permit likely to require: ◦ amendment of bylaws to require compliance with (some)
MassDEP Stormwater Standards ◦ amendment of bylaws to require BMPs which will prevent or
minimize impacts to water quality◦ plans that demonstrate how bacteria discharges will be
reduced to be “consistent with” the load reductions identified in Neponset Bacteria TMDL
Stormwater Bylaws● NepRWA and MAPC will create a Checklist
of effective Stormwater Bylaw provisions that achieve better stormwater management from private development/redevelopment
● Municipal Staff can use the Checklist to:
◦ identify recommended provisions that are not contained in their current Stormwater Bylaws, and…
◦ provide advice as to which of these provisions are most likely to be acceptable to their towns.
Wetland Bylaws
● Most municipal Stormwater Bylaws exempt projects subject to Conservation Commission review under the Wetlands Protection Act or local Wetlands Bylaws.
● Therefore, all provisions in Stormwater Bylaws should be included in Wetland Bylaws (if not already required by state Wetlands Regulations).
Other Local Bylaws that discourage Low Impact Development (LID)● About 10 years ago, MAPC developed a document that
became a part of the “Massachusetts Low Impact Development Toolkit,” which was entitled:
“Do Your Local Regulations Allow Low Impact Development?LID LOCAL CODES CHECKLIST”
● Examples of such Bylaws:◦ Subdivision Rules and/or Roadway Design Standards that
require a minimum width of 30 ft. on all local streets◦ Wetland or Zoning Bylaws that don’t allow bio-retention areas
in the Wetlands Buffer Zone or within 100 feet of property lines◦ Site Plan requirements that allow residential driveway widths of
more than 10 feet
Local Bylaws that discourage Low Impact Development (LID)● Over the last 3 years, NepRWA has worked with
staff in six Neponset municipalities to determine which anti-LID bylaw provisions they have, and whether they would consider repealing such provisions. Based on the results, MAPC will update its Local Code Checklist.
● Municipal staff will then:◦ identify which anti-LID provisions are contained in their
current non- stormwater Bylaws ◦ provide advice as to whether revision of each such
provision is likely to be acceptable to their towns◦ work with NepRWA and MAPC to prepare a list of Code
revisions to be submitted to municipal decision-making authorities
• Analysis to determine retrofit potential of all roadways
• Replenish groundwater & supply drinking water
• Treat pollutants
Evaluation of Parceland Roadway Retrofits
Roadway Retrofits – Analysis
Roadway Retrofits – Ranking
1. Define: Water Quality Problems & Management Needs
2. Determine: Fee Structure
3. Deliver: Outreach Program
4. Develop: Management Program
5. Draft: Bylaw/Ordinance/Regulations
Stormwater Funding / Utility Pilot
➢ Capital Improvements
➢ Staff:
✓ Stormwater Program Manager
✓ Dedicated DPW staff for Maintenance/IDDE
➢ Infrastructure Maintenance/Repair
➢ New Regulatory Compliance (NPDES Phase II MS4)
➢ Planning/GIS
➢ Development Plan/Permitting Review
➢ Retrofitting for Improved Treatment/Resource Protection
What Will this Pay for?
Premise: stormwater drainage system is a public system/service
Principles: equitable, stable, and adequate
Advantages: linked to actual costs, can be designed to meet local needs
Credit: City of San Diego
Credit: City of Newton, MA
Fee Structure
The Equivalent Residential Unit (ERU) is most common fee method used.
Based on a typical Single Family Residential home’s impervious area ( = 1 ERU).
Fees for Commercial, Industrial and possible larger Residential parcels (Tw0-Family, Multi-Family, etc.) are calculated relative to ERU.
Impervious Areas
Rate Structure
Large Shopping Plaza
500,000 sq ft imp.$837.00/mo
less credit
Residential2,700 sq ft
imp.$4.50/mo
Small Market50,000 sq ft impervious
$85.50/moless credit
1 ERU
19 ERU’s
186 ERU’s
Credit: Hoyle & Tanner
Rate - Applying ERU
TownProperty Type
Town A Town B Town C
Single- or Two-Family $25/quarter $6.25/quarter $25/quarter
Multi-Family $40/ 3,210 sq. ft. (annually)
$6.25/quarter $25/quarter
Industrial or Commercial
$40/ 3,210 sq. ft. (annually)
$37.50/quarter $0.45/1,000 sq. ft./quarter
Credit: Hoyle & Tanner
Rate Options
• Incentives for certain practices:
• Recharge/Reduction in Impervious Coverage
• Low Impact Development/Better Site Design
• Rainwater Harvesting/Reuse
• Reduction of Post-development Peak Flow
• Quantifiable Stormwater Quality Benefit
• Educational Programming (in primary/secondary schools)
• Opportunities for Reductions in Fee
Credits
? Regional Utility
? Multi-Municipal Utility
? Municipal Utility
? Existing Municipal Management
Fee/Utility Management Options
Discussion/Questions?