World Water Stormwater Management
Total Page:16
File Type:pdf, Size:1020Kb
Resiliency New York City DEP report advances future stormwater plans New York City’s Department of Environmental Protection (DEP) – in New York, United States – developed an ambitious stormwater management program based on a collaborative effort with other municipalities to develop best practices and share research. Authors Pinar Balci, Floren Poliseo, and Kristin Ricigliano of the DEP, and Sandeep Mehrotra, Stephan Sands, and Liza Faber of Hazen and Sawyer provide a brief overview of the resulting report, which would be valuable to other cities with plans to improve stormwater infrastructure. he City of New York has protects the environment and to protect the harbor. The SWMP a comprehensive set the health of more than 8 million includes numerous programs NEW YORK CITY’S Tof programs aimed at residents. The city’s robust capital designed to reduce the pollution improving water quality and program and implementation of potential of stormwater runoff in EXISTING GREEN protecting waterways, the one of the most aggressive green the areas of New York City served INFRASTRUCTURE environment, and public health infrastructure programs in the by separated sewers. In 2018, PROGRAM IS across the five boroughs. The nation has made New York Harbor DEP lead a multi-agency effort New York City Department of cleaner and healthier than it has to create the city’s first SWMP COMPREHENSIVE Environmental Protection (DEP) been in more than a century. Plan, a requirement of the MS4 AND NATIONALLY has already invested more than In addition to the combined Permit and the Clean Water Act. RECOGNIZED. US$12 billion over the past decade sewer system and the separate To develop and document to upgrade the city’s sewer system wastewater collection system, the the most effective stormwater and treatment plants to reduce city owns and operates stormwater management program possible, the threat of combined sewer infrastructure that discharges DEP looked to its peers in other overflows (CSOs) into surrounding directly into the local waterbodies municipalities to develop best waterbodies. The city owns and through the municipal separate practices and share research. operates 14 wastewater treatment storm sewer system (MS4). DEP worked with 34 communities facilities and 96 pumping stations As such, the MS4 Stormwater and with 38 participating that convey stormwater and Management Program (SWMP) agencies across the country to wastewater. The immense system is a key element of DEP’s mission gather information on a variety of stormwater-related topics. DEP commissioned The Water Elements of the recommended plan Research Foundation’s Innovative and Integrated Stormwater Management Report, which summarizes the results of these discussions and provides Additional 379 50,000 CY of 7 acres of ribbed 50 acres of wetland baseline knowledge to assist in greened acres in environmental mussel colony restoration Bergen and Thurston dredging in creation making informed, effective, and Basin tributary areas Bergen Basin strategic decisions as stormwater Green infrastructure programs continue to grow. The city’s existing Green New programs that the city Infrastructure Program is Triple bottom line benefits developed as a result of this col- comprehensive and nationally laboration include a construction recognized. Its program addresses and post-construction stormwater priority combined sewersheds management program, indus- to meet goals and requirements Water quality Reuse CSO Provide air quality Stormwater trial and commercial stormwater and assists in reducing CSOs. improvement through discharges to Bergen improvement discharges by management program, and DEP will invest US$1.5 billion the filtering of the and Thurston Basins 234 MGY enhancement of municipal until 2030 to construct new ribbed mussels by 15MGY good-housekeeping pollution green infrastructure citywide, to prevention program. The city was help manage stormwater before able to base these new programs it enters the sewer system. In on successful existing ones in addition, DEP encourages the Carbon footprint Habitat creation Property value Heat island Philadelphia, Pennsylvania; use of green infrastructure as reduction improvement construction Washington DC; and Boston, a priority solution for private- reduction Massachusetts, to name a few. property owners to meet ordinance World Water: Stormwater Management Summer 2019 25 Resiliency TO DEVELOP AND DOCUMENT THE MOST EFFECTIVE STORMWATER MANAGEMENT PROGRAM POSSIBLE, THE DEP LOOKED TO ITS PEERS IN OTHER MUNICIPALITIES TO DEVELOP BEST PRACTICES AND SHARE RESEARCH. requirements and developed the future infrastructure design is a Jamaica Bay long- alternatives to gray infrastructure MS4 Stormwater Management continuation of other New York term control plan by examining co-benefits and Design Manual as a helpful City resiliency efforts, including The Jamaica Bay LTCP expands performing a triple bottom line guide. To further encourage the the Wastewater Resiliency Plan. upon the decade-long efforts analysis to assist in managing installation of green infrastructure highlighted in the Jamaica Bay CSOs in Jamaica Bay. The plan on private property, DEP expanded Floatables and trash control Watershed Protection Plan (JB- identified several green strategies the Green Infrastructure Grant The Innovative and Integrated WPP). The JBWPP outlines and to improve water quality conditions Program citywide. A highlight Stormwater Management Report summarizes strategies to improve in Jamaica Bay. The elements of of the program’s success is the highlights multi-purpose, water quality, restore natural the Recommended Plan are all Brooklyn Navy Yard’s newly non-structural, stormwater ecology, and foster community management strategies used or constructed 3,964-square meter co-management efficiencies and social resilience through in- piloted as part of the JBWPP. (42,670 square-foot) green-roof and solutions such as the frastructure, habitat restoration, farm, which now manages nearly city’s Floatables and Trash public education, outreach, and Observations 205,000 liters (54,200 gallons) Control Program — which is a access. The strategies are based As part of this effort, DEP found of stormwater annually. component of the SWMP and strongly on ecological principals the information shared across The integration of green infra- includes street sweeping, catch and community involvement to communities invaluable and aims structure as an urban flooding basin maintenance and repair, maximize the co-benefits provided to maintain knowledge-sharing and climate change resiliency and a combination of booming, by investments in Jamaica Bay. In between municipalities and methodology comes from the skimming, and netting structural addition to treatment upgrades to communities. In collaboration with city’s long history of innovative controls in receiving waterbodies. the DEP’s wastewater treatment the Water Research Foundation, and sustainable solutions for DEP expanded non-structural plants, constructed ecological the DEP distributed the report stormwater management. These trash management through new and stormwater pilots were imple- nationwide to share examples initiatives, combined with the public education campaigns, mented to further research oppor- of innovative programs and city’s three-year partnership largely focused on pilot sites in tunities for integrated strategies. cost-effective tools for improving with the City of Copenhagen, and around Jamaica Bay on the The Jamaica Bay LTCP Recom- the quality of their surrounding Denmark, further developed southern side of Long Island. By mended Plan examined green waterbodies and delivering co- methods, which build climate using subway and bus posters, benefits for their communities. change resiliency into city and leveraging stakeholder The Innovative and Integrated planning and infrastructure. partnerships with organizations Stormwater Management Report Copenhagen is also one of the like the New York Aquarium, would not be possible without contributing communities in the city created its Don’t Trash the generous time that utilities the Innovative and Integrated Our Waters campaign to help and municipalities across the Stormwater Management Report. the public draw connections country and abroad committed to The city is currently assessing between litter on the streets and compiling the data and developing piloting green infrastructure to trash in local waterbodies. the case studies found within. manage cloudburst events, also DEP’s Trash Free Waters known as intense rainfall events, Challenge, an on-going partner- Authors’ Note in the New York City ultra-urban ship with supermarket and NYC DEP Assistant Commissioner environment. Two cloudburst- grocery stores, aims to achieve Pinar Balci; former Managing management pilot projects are a 5-percent reduction in the use Director of Watershed Planning being developed for Southeast of single-use plastic bags by and Modeling Floren Poliseo; Queens, where the city also made encouraging behavior change and Water Resources Associate, a historic investment of US$1.9 and the use of reusable bags. Watershed Planning, and MS4 billion towards projects that In addition to non-structural Compliance, Kristin Ricigliano work will significantly reduce severe controls, floatables and trash in the Bureau of Environmental flooding. These pilot projects will control is also considered during Planning and Analysis. impact multiple city blocks on a planning for DEP’s extensive Top: The Brooklyn Navy Yard Vice President Sandeep Mehrotra, local scale and reduce flooding set of long-term control plans enhanced green-roof farm, located Senior Associate Stephan Sands, in New York City. downstream in the storm sewer (LTCPs) for many of New York Above: A poster design for New and Assistant Engineer Liza Faber network. The work to incorporate City’s surrounding waterbodies. York City’s Don’t Trash Our Waters work at Hazen and Sawyer, based in climate change resiliency into campaign. New York, New York, United States. World Water: Stormwater Management Summer 2019 27.