Overcoming Subsurface Challenges: Implementing Green Infrastructure in NYC’s Right of Way

This presentation will discuss how, in collaboration with the Department of Design and Construction (DDC), the DEP has developed standard specifications for construction of ROW GI throughout NYC.

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Date: Presented at StormCon 2024 in Reno, Nevada on August 28, 2024
Speakers: George Papasmiris & Tony Li
Credits: 0.75 PDH / Approved for all Envirocert International, Inc. (ECI) Certifications: Approval #PDH-0042

New York’s Department of Environmental Protection’s Right-of-Way Green Infrastructure (ROWGI) initiative is one of the largest programs in the world. This presentation will discuss how, in collaboration with the Department of Design and Construction (DDC), the DEP has developed standard specifications for construction of ROW GI throughout NYC. The NYC DEP GI Standard Designs contain six asset types with unique features and additional elements to be used when needed. A few of the specifications this presentation will discuss are Clean Open Graded Stone, Concrete Elements, Stormwater Inlet for GI Assets, High Density Polyethylene (HDPE) Pipe, and HDPE Stormwater Chambers. Throughout DEP’s experience of constructing more than 10,000 ROW GI assets, updates to specifications such as Plant Establishment and Steel Tree Guards, were essential to improving the lifetime and durability of the green infrastructure. In summary, this presentation will discuss the standard specifications for the right-of-way green infrastructure program at NYC DEP and how those specifications have changed over time to successfully implement the largest GI program in the country.

Session duration: 45 minutes

About the Presenters

George Papasmiris has been working in the Right-of-way Green Infrastructure Unit at the New York City Department of Environmental Protection since 2019, reviewing geotechnical data and green infrastructure designs throughout NYC. Prior to NYCDEP he earned his B.S. in Chemical Engineering from SUNY At Buffalo and a M.S. in Environmental Engineering from New York University.

Tony Li has worked in the NYC Department of Environmental Protection’s Right-of-way Green Infrastructure group since April, 2016. Initially he worked as a project engineer, reviewing Geotech and drainage submittals from consultants. Later on, in 2019 Mr. Li started working on the project management side, and has managed various GI contracts throughout design and construction phases.

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Course Includes

  • 1 Lesson
  • Course Certificate