Real World Implementation of Sustainable Development

Robert Roseen, PhD, D.WRE, PErroseen@geosyntec.com 603-205-8056

June 25, 2014

 Commercial Street Reconstruction Porous PavementProvincetown, MassachusettsIn 2012 Provincetown began the installation of over 5,000’ of the first “Porous Municipal Main Street”. The project addressed existing infrastructure problems with flooding and drainage along a main thoroughfare that has tremendous traffic during the busy tourist season..

The harbor and Commercial Street are the economic driver for the Town.

Beach closures affect economy and public perception

Year-round population of around 3,000

Seasonal population increases to approximately 30,000

Summer tourism can bring in half a million visitors to Commercial Street

Harbor Beach Closures

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2011

2012

2013

Beac

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Porous Pavement Standard Pavement

6 Closures in 2013

No 2013 Closures

2013 had a total of 15 closures at 10

locations

Does Impervious Cover Reduction Really Work?

Urban Watershed Renewal in Berry Brook

Robert Roseen, Viktor Hlas, Tom Schueler, Tom Ballestero, Mark Voorhees, Melinda Bubier, Joel Ballestero, James Houle, Dean Peschel, Bill Boulanger, David Burdick, Lorie Chase, Ann Scholz, Sally Soule, John Magee, Ben Nugent, Matt Carpenter,

University of New Hampshire Stormwater Center, City of Dover, University of New Hampshire, Cocheco River Watershed

Coalition, New Hampshire Fish and Game, New Hampshire Department of Environmental Services

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Funding Sources: NHDES 319 Watershed AssistanceNHDES Aquatic Resource Mitigation Funds

Hydrology---Benefits of LID Retrofits

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7/11/2011 10/19/2011 1/27/2012 5/6/2012 8/14/2012 11/22/20120.00000

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0.06000 0.000

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Average Daily Flow per Watershed Area

Date

Disc

harg

e/Ar

ea (c

fs/a

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Separation of hydrographs

for developed and

undeveloped watersheds

pre-constructions

Similarity of hydrographs

for developed and

undeveloped watersheds

post-LID installs

Shift towards pre-

development hydrology

POST-CONSTRUCTION LID

CONSTRUCTIONPRE-CONSTRUCTION

 A Low Impact Development Approach at Greenland Meadows Greenland, New HampshireUtilizing an LID approach that featured acres of porous asphalt and a gravel wetland, a cost-competitive drainage system was designed for a large retail development. The total impervious area of the development – mainly from rooftops and non-porous parking areas – is approximately 25.6 acres. This project had an estimated 26% cost reduction due to cost avoidance in associated drainage infrastructure (ponds and piping) with the use of Low Impact Development.

Greenland Meadows Commercial,

Greenland, NH• “Gold-Star” Commercial Development• Cost of doing business near Impaired

Waters/303D• Brownfields site, ideal

location, 15yrs• Proposed site >10,000

Average Daily Traffic count on >30 acres

Comparison of Unit Costs

26% savings on total cost of SW infrastructure

LID as a Climate Adaptation Tool and Community Resiliency

Of 15 largest events since 1934:• 8 have occurred in

last 25 years• 5 have occurred in

last 15 years• 3 have occurred in

last 5 years

LID zoning mitigated flooding

increase by 53%

Questions?

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