Producing New York’s First Citywide Spill Pollution Plan
Under the Stormwater Management Plan-Municipal Separate Stormwater Sewer System (SWMP-MS4) Agreement, the New York State Department of Environmental Conservation issued a MS4 permit to the City of New York (NYC). This permit requires City-owned facilities within MS4 and direct drainage areas to be evaluated on the effectiveness of existing stormwater control measures (SCMs) and additional SCMs that should be implemented to reduce the discharge of pollutants into the City’s waterways.
Our team helped manage the GIS database and assess the municipal facilities and operations that fall under the permit. We managed the database in a phased approach. The first step was identifying gaps in information necessary to distinguish sites, which was used for project coordination and efficiency. The next phase was designing the database to document key information about the facilities from field assessments. As the project continues, the database will be updated with the associated pollutants of concern, issues of compliance, corrective actions, and recommended best management practices (BMPs).
Our team works with the agency liaison and facility manager to conduct the assessments. Once at the facility, we evaluate its operations with a focus on the potential for pollutant runoff. We assess the drainage patterns, material and waste storage areas, and existing and potential SCMs.
We produce reports for each facility with a quick return time. The facility’s operational areas are included on a map, which details the site’s flow direction and the chemical storage locations. The report scores the facility based on the quantity and frequency of use of the materials found onsite. We also provide a facility action plan, which details action items to improve the effectiveness of the facility’s SCMs and implement new SCMs ranging general housekeeping to structural improvements.