Storm Water Management, Stormwater Pollution Prevention

Charter Oak incorporates storm water management measures into our site planning and engineering designs.  These measures are intended to improve the quality of storm water runoff during site construction,  to maximize the control of erosion and sedimentation, and improve the quality and quantity of runoff during long-term use of a property.

Storm water management measures are intended to remove pollutants such as sediment, nutrients (e.g. nitrogen) and oils from storm water.  These measures, also known as best management practices (BMPs), may consist of structural and non-structural components.

Structural components we incorporate into our designs include catch basins, oil/water separators, wet retention ponds, dry sedimentation and detention basins, vegetated swales, soil erosion and sedimentation controls and artificial wetlands.  Structural components are intended to intercept or separate pollutants from storm water by settling, adsorption, infiltration, evaporation and biological uptake, thereby preventing them from entering drainage systems, paved areas, wetlands and watercourses.

Non-structural practices are also incorporated into operation and maintenance plans for sites.  These practices may include pavement sweeping, maintenance of vegetated areas to encourage runoff infiltration, regular cleaning and maintenance of catch basins and manholes, and preparation of Storm Water Pollution Prevention Plans (SWP3 Plans).   SWP3 Plans are developed for certain operations if required by state regulations.

Structural and non-structural storm water management practices minimize contamination of ground water, surface water and wetlands with pollutants typically contributed by a developing area.  These pollutants may consist of construction sediment, nitrogen and phosphorous from fertilizers, oil and grease from mechanical equipment and vehicles and bacteria and pathogens.  These types of pollutants are commonly known as non-point sources of pollution, and have been found to be a significant contributor to water quality degradation in urban and developing areas.

Incorporation of storm water management practices into site plans, subdivision plans and other land use plans and designs are critical to improving and maintaining the quality of ground water, surface water and wetlands.  In preparing plan and land use application submittals to local, state and federal agencies, we incorporate storm water management practices into our designs to satisfy their regulatory requirements as well as to protect the environment.

Charter Oak staff have applied for and obtained regulatory permits from local planning and zoning and inland wetland agencies, state inland wetland agencies including coastal area management divisions and the Connecticut River Assembly (in Connecticut), federal agencies including the Army Corps of Engineers, the U.S. Fish and Wildlife agency and the U.S. Environmental Protection Agency.