stormwater discharge Articles

  • A technical guide to complying with Federal SPCC Regulations

    Let’s start by clarifying what SPCC is not since SPCC does overlap other Federal and State environmental regulations. SPCC is not: NPDES – Permits under NPDES, such as stormwater or water discharge permits, are required to discharge pollutants into the “navigable waters of United States.” While it is never permitted to discharge “oil” into any waters of the US, there is some overlap with NPDES in ...


    By Ecocion, Inc.

  • Porous pavement technology - Case Study

    Porous pavement systems address environmental issues, such as aesthetics and permeability, while providing needed support for a wide variety of loading requirements. From heavy emergency vehicles to pedestrian foot traffic, porous pavement applications range from fire access lanes to utility roads, trails, walkways, and other high use areas. Porous systems are designed to handle the most ...


    By Presto Geosystems

  • Impact of carwash discharge on stormwater quality (Toulouse, France)

    The contribution of discharge from carwashes to pollutant levels in stormwater was evaluated. Five carwashes and two outlets in the city of Toulouse (France) were selected. Water samples were collected from December 2006 to December 2007. Concentrations and loadings of classical water quality parameters (conductivity, pH, turbidity, chemical oxygen demand, nitrogen, phosphorus, ammonium, nitrate, ...


    By IWA Publishing

  • Green Roof Media Selection for the Minimization of Pollutant Loadings in Roof Runoff

    ABSTRACTStormwater is a leading cause of water quality impairment in estuaries like the Chesapeake Bay. Green roofs are a potential best management practice for urban areas where land for traditional stormwater practices is unavailable. They are aesthetically pleasing, with excellent water retention ability. However, it is unknown how effective they are at treating stormwater. Typical media ...

  • Modeled Flow Duration Variations, Pollutant Discharges, and Costs for Different Stormwater Controls

    ABSTRACTRunoff volume and pollutant discharges increase with development, with associated detrimental receiving water effects. These increases can be partially controlled by installing stormwater control practices, such as wet detention pond at outfalls, using conservation design controls such as grass swales and bioretention devices, and by improved development practices that reduce the amounts ...

  • Seatac airport third runaway - Case Study

    Active Treatment with 1% ChitoVan™ Chitosan Acetate The west side of Sea-Tac airport was widened by adding 11 million cubic yards of fill dirt to create the 3rd runway. Because the west side of the airport drains to Miller Creek, a protected NW stream, all of the construction stormwater had to be captured and treated prior to discharge. During the project over 5 billion gallons of ...

  • Application of a risk management framework to a drinking water supply augmented by stormwater recharge

    The Blue Lake is an important water resource for the city of Mount Gambier and the surrounding region, primarily as the drinking water supply source, but also as a tourist attraction. Mount Gambier’s stormwater is discharged directly via drainage wells into the unconfined, karstic Gambier Limestone aquifer, which in turn provides the majority of recharge to Blue Lake. Discharge of urban runoff to ...


    By IWA Publishing

  • Stormwater Solids Reduction for NPDES Permits

    Finally obtaining a National Pollution Discharge Elimination System (NPDES) Permit is often a relief but is by far not the end of the story. Meeting the requirements of that permit often proves to be quite difficult and stiff fines are freely doled out to those who fail to meet regulatory limits. For one Midwest jet propulsion manufacturing facility, the issue of total daily solids discharge ...

  • Real-time Water Monitoring Solution for Queensland case study

    Customer: ConfidentialApplication: Water monitoringBackground: Department of Environment and Heritage Protection (DEHP) are responsible for managing the health of the environment to protect Queensland’s unique ecosystems, including its landscapes and waterways, as well as its native plants ...


    By Ecotech Pty Ltd

  • Micropollutants in stormwater runoff and combined sewer overflow in the Copenhagen area, Denmark

    Stormwater runoff contains a broad range of micropollutants. In Europe a number of these substances are regulated through the Water Framework Directive, which establishes Environmental Quality Standards (EQSs) for surface waters. Knowledge about discharge of these substances through stormwater runoff and combined sewer overflows (CSOs) is essential to ensure compliance with the EQSs. Results from ...


    By IWA Publishing

  • Characterization and source identification of stormwater runoff in tropical urban catchments

    The characteristics of urban stormwater pollution in the tropics are still poorly understood. This issue is crucial to the tropical environment because its rainfall and runoff generation processes are so different from temperate regions. In this regard, a stormwater monitoring program was carried out at three urban catchments (e.g. residential, commercial and industrial) in the southern part of ...


    By IWA Publishing

  • What is stormwater?

    Stormwater runoff, water that isn’t absorbed into the ground after a weather event, is a potential water source that cities across the world have struggled with for decades. Why is coping with it such a challenge? Whether the precipitation is water or ice, its addition to the environment can be a problem, especially when a lot of it falls in a short amount of time. When this occurs in ...


    By Fluence Corporation

  • Capturing the Potential of Stormwater

    Management of the urban water cycle in Australia has changed significantly over the past few decades. Stormwater management philosophy has evolved from the conventional, but still important, flood mitigation paradigm, to the current runoff quality control approach. It is now progressing towards the harvesting and reuse concept whilst retaining the previous two targets. iven the current interest ...


    By IVWater

  • Developing a Stormwater Infrastructure Geospatial Database for a Large Non-Traditional MS4 System

     ABSTRACT The Massachusetts Department of Conservation and Recreation (DCR) is a state agency which owns and maintains parks, conservation and watershed land, and roadways. They are regulated as a non-traditional MS4 stormwater municipality under the U.S. Environmental Protection Agency’s (EPA) National Pollutant Discharge Elimination System (NPDES) Phase II program. To satisfy the ...

  • Contribution of trace metals from atmospheric deposition to stormwater runoff in a small impervious urban catchment

    The contribution of atmospheric deposition to emissions of trace metals in stormwater runoff was investigated by quantifying wet and dry deposition fluxes and stormwater discharges within a small, highly impervious urban catchment in Los Angeles. At the beginning of the dry season in spring 2003, dry deposition measurements of chromium, copper, lead, nickel, and zinc were made monthly for 1 year. ...

  • Monitoring fuels in Stormwater - Case study

    The Situation A major pipeline company has large storage tank farms throughout the Western States. The pipeline company transports, stores, blends additives, and distributes gasoline, diesel, and jet fuel to retail service stations and airports. Due to the quantity and movement of fuel at these facilities, there is always the potential for fuel spills. These facilities prevent out of ...

  • New strategies in stormwater-meltwater management in the city of Bergen, Norway

    ABSTRACTIn the City of Bergen, Norway, extensive measures against point pollution sources are now to be implemented and to be finished before the end of year 2000, improving the receiving water conditions. Local politicians and public opinion support high standards of receiving water, even higher than the national level. Future improvements in the receiving water quality is planned through ...


    By IWA Publishing

  • Influence of the land use pattern on the concentrations and fluxes of priority pollutants in urban stormwater

    This paper presents the results of the concentrations (μg/L) and fluxes (g/ha) of priority substances in stormwater from three watersheds with different land use patterns (namely, residential, urban dense, high urban density). Samples were collected at the outlet of these watersheds. Thirteen chemical groups were investigated corresponding to 88 individual substances before treatment. Results ...


    By IWA Publishing

  • Model-based monitoring of stormwater runoff quality

    Monitoring of micropollutants (MP) in stormwater is essential to evaluate the impacts of stormwater on the receiving aquatic environment. The aim of this study was to investigate how different strategies for monitoring of stormwater quality (combining a model with field sampling) affect the information obtained about MP discharged from the monitored system. A dynamic stormwater quality model was ...


    By IWA Publishing

  • Integration of Watershed Planning and Wellhead Protection Programs

    For communities using groundwater as the primary source of water supply, delineating, managing, and protecting the wellhead recharge area is essential to assuring a sustainable water resource system. Because many communities are also required to obtain a National Pollutant Discharge Elimination System (NPDES) permit for discharges from municipal separate storm sewer systems (MS4s), delineating ...

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