maine stormwater conference november 17, 2015 ken · pdf filemaine stormwater conference...

Maine Stormwater Conference

November 17, 2015

Ken Moraff

EPA New England

Milwaukee, WI

• Stormwater park – recreation

• Mitigates flooding up to 100 year storm

• Reclaimed brownfield

Menomonee River Stormwater Park

Roof on EPA Narragansett Lab

Rain gardens

Burnsville, MNNeighborhood Rain Garden Project

10

Results of Burnsville Rain Gardens

Barr Engineering

Blue: Runoff from control neighborhood

Red: Runoff from neighborhood retrofitted with rain gardens

5 MPH reduction in average traffic speed

Kansas City, MO

What Do We Do About Stormwater?

Goal: Incremental progress

• Tight budgets• Uncertainty about GI• Big changes are expensive – public won’t support

Strategy:• Stick with 6 minimum controls – proven practices• Steps toward LID – but don’t rush to retrofit

• We can have clean water• We can reduce flood risk• Water can improve our communities

Strategy: • Start planning for a truly “green” stormwater system

• Long schedules, adaptive management

Goal: Clean water, green communities

Extreme storms: 1947 - 2011

NEW HAMPSHIRE 115%

RHODE ISLAND 90%

VERMONT 84%

MASSACHUSETTS 81%

MAINE 74%

CONNECTICUT 73%

What Do We Do About Stormwater?

Goal: Incremental progress

• Tight budgets• Uncertainty about GI• Big changes are expensive – public won’t support

Strategy:• Stick with 6 minimum controls – proven practices• Steps toward LID – but don’t rush to retrofit

• We can have clean water• We can reduce flood risk• Water can improve our communities

Strategy: • Start planning for a truly “green” stormwater system

• Long schedules, adaptive management

Goal: Clean water, green communities

Stormwater Public Outreach

Soak Up the Rain

WebsiteToolsSocial mediaGrantsWorkshopsEventsCollaboration

Boston Living Roof Bus Shelter Initiative

Boston Flower & Garden Show

Rain Garden TrainingHartford, CT

soakuptherain@epa.gov

Region 1 - GI Technical Assistance Projects

• Cape Cod ($75k) to identify GI projects to reduce nitrogen loading

• Franklin, MA ($55k) to develop a Green Stormwater Infrastructure Implementation Strategy

• Sanford, ME($40k) to redesign former mill using green infrastructure to revitalize the Mousam River as a recreational, ecological and economic asset

Series of Municipal Handbooks

• Funding Options• Retrofit Policies • Green Streets • Rainwater Harvesting

Policies• Incentive Mechanisms

Email to: join-greenstream@lists.epa.gov

EXISTING RESOURCES: THE NATIONAL STORMWATER CALCULATOR

Available at:http://www.epa.gov/research/gems/stormwater.htm

Application: Redevelopment Plan for Spartanburg, SC

Conceptual Design of Green Streets:

Spartanburg, SC (EPA Green Infrastructure Technical Assistance)

Spartanburg, SC:Typical Section view of green street concept plan with street planters

Project Documentation:http://water.epa.gov/infrastructure/greeninfrastructure/upload/Spartanburg_Tech_Assistance1.pdf

Spartanburg, SC Green Street Design

Scenario

Runoff Infiltration EvapotranspirationBaseline 84% 5% 11%

Scenario 1

(Street Planters)

18% 67% 15%

Scenario 2

(Pervious Pavement)

17% 75% 8%

Hydrologic results from EPA Stormwater Calculator

www.epa.gov/giwiz

43

GIWiz Structure• Quick Links • Explore

44

GITARGreen Infrastructure Tools & Resources Database

FIND WHAT YOU NEED TO MAKE THE RIGHT DECISION

PlannerJustify Budget

Economic Benefits: $

Value

Microsoft Excel

Maine

Who are you?

What do you need?

How do you need it?

What do you know?

Where are you?

Resilience and Adaptation in New EnglandRAINE Database

• 100 New England towns, regions, states

• 300 documents• Search impacts, plan or

product, funding, partners

• Available December 2015

Example: Search on Sea Level Rise

47

Year 0-5

Year 6-10

Year 11-15

Year 16-20

Plan Phase 2

Plan Phase 3

Implement Phase 3

Implement Phase 2

Plan Phase 1

Implement Phase 1 25% complete

50% complete

100% complete

Charles River implementation plan

Optimizing BMP Locations Saves a Lot of Money

MAINE’S SWUs• Lewiston• S. Portland/Long

Creek• Bangor• Augusta

“Residual Designation” of new permittees

EPA or state with approved NPDES program can designation new categories of dischargers needing stormwater permits

• If needed to meet TMDL allocations

• If discharges contribute to water quality violation

• If discharges are a “significant contributor” of pollutants

CWA § 402(p)(2)(E), 40 CFR 122.26

Impervious Cover Treated: 11 acresProject Cost: $700,818

2010 – 2011 Long Creek Update – Cumberland County Soil & Water Conservation District

“To be effective in having the greatest benefit on the watershed, the proposed NPDESprogram must treat all of the causes of the stress equally, and not result in one sector ortype of Owner in having to bear an inordinate amount of the responsibility or cost in the long term improvements. Whether the impervious cover is related to a shopping center, a public or Private roadway, or a municipal complex, all of the responsible parties must bear a proportional share of the costs…”

General Growth Properties - Maine Mall, LLC comments on Long Creek residual designation

Thank you!

Ken Moraff

moraff.ken@epa.gov

1. https://www.flickr.com/photos/boston_public_library/2381275695/in/album-72157604353954230/2. https://www.flickr.com/photos/foodchic/4343640583/in/photolist-7BQi1T-6aTqru-bzuzxw-7KYgsY-

3Ppx6E-ovzEMN-2msQEm-7M9CCC-8rWd3p-8GrFkP-6iEjQC-7A68de-gUQJEe-9sP3WW-2Mina-rFiLWJ-r7rVZL-wyEr42-qim216-x6b6Ut-roUcRk-xuxhzF-3yn439-5D6F1E-xWpVZF-vRBrsk-rUjJbK-xcS3aq-ryZYn4-rsCViW-vVWehh-xh9m5j-dFeBaW-8GX1ZF-i6yPvN-ry9qTv-rp2cCK-rpXDBC-xnzvxZ-7dRqww-3gFkX8-ryfkqZ-x2fv99-roYEVr-bqMDYC-wtoWKQ-rqA2Le-6Ar2Uj-avSjNh-6TKX3j/

3. http://www.flickr.com/photos/chefmattrock/4780312471/4. https://www.flickr.com/photos/boston_public_library/2381277247/in/album-72157604353954230/