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Developing green infrastructure in new york city

Building Climate Resiliency with Green Infrastructure

The system is sometimes overwhelmed by stormwater that runs off the impervious surfaces of the densely developed city, polluting local waterways. Newtown Creek in Brooklyn, New York Newtown Creek in Brooklyn, New York The project, expected to be completed in 2016, requires working in a densely developed urban community with a mix of residential and commercial areas.

  1. Bioswales at Dean St and 4th Ave in Brooklyn. A highlight of the expanded transportation options is the construction of a protected bike lane along Delancey Street leading up to the Brooklyn Bridge in SoHo.
  2. In 2013, we were retained to design about 550 bioswales in Brooklyn, the most populous borough in the city with about 2.
  3. The bioswales and other green infrastructure elements are part of efforts by New York City to soften the impervious urban landscape and reduce the amount of runoff that would otherwise drain into the combined sewer system. Coordination with multiple city agencies and concurrent design contracts was required.

Green Streets Green Streets We gained valuable experience in the use of bioswales and other green infrastructure when designing green streets projects in four areas of west Philadelphia.

Mott MacDonald has helped alleviate the problem of contaminated runoff around Newtown Creek in Brooklyn, one of the most polluted industrial sites in America. In 2013, we were retained to design about 550 bioswales in Brooklyn, the most populous borough in the city with about 2.

Challenges For cities served by combined sewer systems, green infrastructure — such as right-of-way bioswales and stormwater green streets — is one way to help prevent sewage from overflowing into waterways when snow or rainfall is heavy. Impervious surfaces are removed at select locations and replaced with permeable substrate, organic topsoil, and vegetation appropriate to the locale.

  1. Within these neighborhoods, locations for the bioswales are initially chosen by DEP engineers who, armed with maps of the local water and sewer systems, walk the streets and identify sidewalk locations that are upstream of a catch basin and have the room necessary to accommodate a bioswale. She has worked on stormwater, wastewater, climate change, and water demand management planning projects.
  2. With buses becoming slow and ridership declining , the DOT wants to create at least 20 Select Bus Service routes, particularly in areas underserved by the subway system. Bioswales must be upstream from a catch basin and at least 35 feet from an intersection, and must allow clear access to building entrances and a clear sidewalk path at least eight feet wide.
  3. A highlight of the expanded transportation options is the construction of a protected bike lane along Delancey Street leading up to the Brooklyn Bridge in SoHo.

Newtown Creek in Brooklyn is a dramatic example of the impact of contaminated runoff on urban waterways. Once a brackish estuary of the Hudson River, Newtown Creek became the oldest continuously used industrial area in the country.

How can green infrastructure improve water quality in New York City?

With time, the creek was one of the most polluted industrial sites in America. According to the Newtown Creek Alliance, which is dedicated to restoring the area, the creek has no natural flow because its freshwater sources have been covered over. Impervious surfaces, and the soils below them, are replaced with permeable substrate, organic topsoil and vegetation.

The use of bioswales is not always straightforward. Bioswales must be upstream from a catch basin and at least 35 feet from an intersection, and must allow clear access to building entrances and a clear sidewalk path at least eight feet wide.

We gained valuable experience in the use of bioswales and other green infrastructure when preparing design plans and specifications for several green streets projects in Philadelphia.

The client retained us for a project to create right-of-way bioswales in the Newtown Creek CSO tributary area. Analysis of tributary drainage approximately 525 acres Site selections Geotechnical investigation, including hiring and supervising drillers Topographic surveys Design of over 550 right-of-way bioswales Bidding assistance The project requires working in a densely-developed urban community with a mix of residential and commercial areas.

Coordination with multiple city agencies and concurrent design contracts was required.

NYC DOT Releases Plan for Green Infrastructure Development

An aggressive schedule required the design to be completed in under a year. In 2014, we were awarded, by DEP, a new Task Order contract that is expected to include design of several hundred bioswales in the Borough of Queens. Reducing flooding and combined sewer overflows Reducing the amount of polluted runoff reaching sewers Recharging the groundwater table Improving pedestrian and bicycle safety Improving air quality Alleviating the urban heat island effect Making streetscapes more attractive Newtown Creek is just one example of the potential impact.

By reducing the number and quantity of CSOs, green infrastructure will improve water quality in the creek. The planting of trees and other vegetation will improve air quality and make the area more attractive. Thanks to the efforts of stakeholders, the Newtown Creek Alliance says life is returning to the creek.

Wetland plants are taking over the abandoned bulkheads and sediment piles.