Effectiveness of Environmentally Sensitive Site Design and LID on Stormwater Runoff Patterns
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The subdivision that became Partridgeberry Place was originally designed as a conventional subdivision in 1997. This proposed version of the subdivision, which consisted of 1-acre lot sizes and minimal preservation of open space, was never constructed.

The Town of Ipswich, MA, adopted an Open Space Residential Design (OSRD) ordinance, which provides developers incentives such as density bonuses to preserve valuable open space onsite, based on environmental and cultural priorities, and cause minimal disturbance to the natural terrain.

The site was redesigned as Ipswich’s first OSRD residential subdivision and was sold by the original developer to the Martins Companies, which revised the design further, completed permitting, and renamed the subdivision Partridgeberry Place. The Massachusetts Department of Conservation and Recreation, under a cooperative agreement with USEPA, contracted with the Martins Companies to enhance the cluster design with a variety of low-impact development (LID) stormwater techniques, and with Geosyntec Consultants Inc. to conduct hydraulic and hydrologic monitoring and modeling. The project goals were to minimize overland runoff; provide a range of LID examples to present to local and regional developers, engineers, and water resource managers; and characterize the combined impact of a suite of LID design techniques on runoff patterns. The LID subdivision was constructed on a 38-acre parcel as a cluster of 20 single-family homes on lots of approximately 0.20 acre (8,000 to 11,000 square feet) and 28 acres of open space.

The OSRD approach identifies conservation areas as “open space” and includes wetlands, floodplains, buffers to streams, wildlife habitats, and historic features. The site is evaluated to determine which features should be preserved and designated as conservation land. The benefits of the OSRD approach are reduced economic costs from reduced infrastructure, increased property value, and improved protection of natural and cultural resources. Local and state officials are increasingly turning to OSRD as an alternative to standard “cluster zoning” provisions as an improved resource-based approach, according to

Read More: http://foresternetwork.com/daily/water/effectiveness-of-environmentally-sensitive-site-design-and-lid-on-stormwater-runoff-patterns/

Publication Summary

  • Geosyntec Authors: Steven Roy
  • All Authors: Fitsik, R., S. Roy, and S. Cohen
  • Title: Effectiveness of Environmentally Sensitive Site Design and LID on Stormwater Runoff Patterns
  • Event or Publication: Stormwater Magazine
  • Practice Areas: Water and Natural Resources Assessment, Management, and Restoration
  • Date: 2010