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

bounty@neponset.org

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?