Stormwater Management Plans

Rain Garden Pervious Pavement Green RoofBioswaleRip Rap

Field’s Point Facility Stormwater Management Plan

The Rhode Island Department of Environmental Management requires facilities with industrial activities that discharge stormwater to the surface waters of the State of RI to develop Stormwater Management Plans in accordance with the Multi Sector General Stormwater Permit. The NBC Field’s Point Facility Stormwater Management Plan can be found here.

Rain Garden - Rain gardens are shallow depressions in the landscape that typically include plants and a mulch layer or ground cover. In addition to providing increased groundwater recharge, they are expected to provide pollutant treatment. Rain gardens can be used in residential settings to accept runoff from a roof or other impervious surface. Factsheet can be found here.

Bioswale - A bioswale is typically a long, narrow channel planted with grasses and/or other native vegetation and may convey the storm-water to another LID such as a rain garden to bioretention area. The bioswale is designed to slow and capture stormwater runoff, filter pollutants and increase rainwater infiltration. Vegetation placed along the swale can benefit from the concentration of water in the area. Factsheet can be found here.

Pervious Pavement - Materials are designed to absorb stormwater, filter particulates and infiltrate the underlying soil to allow for effective groundwater recharge (see diagram). Options include pervious asphalt, pervious concrete, interlocking pavers, and plastic grid pavers. These methods allow rain and snowmelt to seep through the surface down to underlying layers of soil and gravel. In addition to reducing runoff from rain, the pervious pavements filter out pollutants and reduce the need for road salt. Factsheet can be found here.

Green Roof - Theses roofs are sometimes called a sustainable roofing system, eco-roof, rooftop garden, vegetated rooftop or sky garden – consists of layers of vegetation and specially engineered soil laid over a conventional roofing surface. Green roofs typically have a protective root barrier underneath the vegetation and soil, a standard roofing membrane, drainage systems and a structural support system. Factsheet can be found here.

Rip Rap – Rip Rap is lose stone pieces that is used on an embankment or slope to prevent erosion and also allows stormwater to percolate back into the ground.