Showing results for: stormwater runoff Articles
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Log yard water treatment study - Case Study
Stormwater run-off from log yards and saw mills has long been a difficult waste stream to manage. The challenge arises from ability of wood and bark to easily leach high levels of organics (tannins, lignins, phenolics and resin acids) into mobile water. These organics can remain in the suspended state for months and exhibit toxicity to aquatic life as organisms break them down leading to a ...
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Wire manufacturing facility - Case Study
Bench-Scale Stormwater Treatment Study A large wire manufacturer in Washington State asked Dungeness Environmental to perform a treatability study on their stormwater run-off. The run-off requires remediation prior to discharge for turbidity, zinc, copper and lead concentrations. Dungeness performed an initial screening test in the lab simulating a variety of water treatment techniques for an ...
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Brightwater treatment plant - Case Study
Active Treatment and Certification To meet the stringent state stormwater run-off standards during construction of the Brightwater Conveyance and Wastewater Treatment Plant Project in Woodinville, WA one active treatment system using 1% ChitoVan Chitosan Acetate was needed. Dungeness Environmental worked alongside Northwest Construction to gain approval for CESF treatment through Ecology. ...
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Stormwater retention basin efficiency regarding micropollutant loads and ecotoxicity
Retention basin efficiency in micropollutant removal has not been very well studied, in particular for pollutants highlighted by the European Water Framework Directive of 2000 such as pesticides, polybrominated diphenyl ethers (PBDEs) and alkylphenols. This study is based on in situ experiments carried out on a stormwater retention basin with the aim of estimating the basin efficiency in ...
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Case study - Client: City of Chicago, Parks Division
Project: Rooftop rainwater to flush toilets. Comfort stations at 40th Street and Osterman Beach. Challenge: The Parks Division of the City of Chicago wanted to its two new comfort stations along the Lake Michigan Lake Shore Drive to be environmentally responsible and serve as demonstration projects for the the city's efforts toward sustainable design. Solution: Architects Muller & Muller ...
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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 water ...
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Using Permeable Eco-Paving to Achieve Improved Water Quality for Urban Pavements - Case Study
Abstract This paper describes the planning, design and construction of a permeable pavement as a practical demonstration of the benefits of eco-paving in Australian environmental management. The paper addresses the use of permeable pavements as part of a Water Sensitive Urban Design that allows infiltration of stormwater, reduction of pollutants and slow reticulation of the stormwater to an ...
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Using Permeable Eco-Paving to Achieve Improved Water Quality for Urban Pavements
This paper describes the planning, design and construction of a permeable pavement as a practical demonstration of the benefits of eco-paving in Australian environmental management. The paper addresses the use of permeable pavements as part of a Water Sensitive Urban Design that allows infiltration of stormwater, reduction of pollutants and slow reticulation of the stormwater to an ecologically ...
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A Guide to Oil in Water Monitoring for Environmental Compliance
Applications for industrial oil in water monitoring can vary greatly. In upstream and midstream oil and gas production applications, monitoring separation efficiencies is key to optimize production rates, preventative maintenance, chemical use, flow, and environmental compliance. Separated water from the oil is called produced water and it must be cleaned of oil before disposal or re-injection. ...
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Understanding and Monitoring Hydrocarbons in Water
Untitled Document 1. Introduction Oil contamination continues to be a very hot topic, due largely in part to recent catastrophic events with shipping tankers in open waters. The coastal contamination off Spain, the Valdez in Alaska, accidents off California, refinery spills in Brazil (11), and dozens of other countries have all provided much insight into the damage ...
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HELP! My Oil Water Separator (or CPI Separator) is Constantly Clogging!
We get calls ALL THE TIME about poor operation in existing CPI/Oil Water Separators (OWS). The issues described follow a similar pattern: “Separator media clogging frequently… …which means lots of downtime for cleaning/maintenance… …which is expensive and time consuming…. …which means we just end up settling for poor effluent quality and ...
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Stormwater Management for Urban Environments
IntroductionElmhurst College, a hundred-thirty-five year old private learning institution, is proceeding with a campus redevelopment project that will include a one hundred seventy bed residence hall. In addition, the college continues to be a role model for sustainable site design and an educational resource for both students and the community.The need for additional housing, due to increased ...
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Relationships between rainfall intensity, duration and suspended particle washoff from an urban road surface
A basic understanding of the relationships between rainfall intensity, duration of rainfall and the amount of suspended particles in stormwater runoff generated from road surfaces has been gained mainly from past washoff experiments using rainfall simulators. Simulated rainfall was generally applied at constant intensities, whereas rainfall temporal patterns during actual storms are typically ...
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Fire access case study summary 1
Environmental regulations that control and limit storm water runoff, reduce impervious surfaces, and increase green space have resulted in the growth of permeable pavements for traffic areas. The Geoblock® Porous Pavement System offers support for all vehicular loadings and protects the grass from the damaging effects of traffic while allowing natural groundwater replenishment. Examples where ...
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Ruisseau Leamy, Hull, Quebec, Canada - Case Study
A11 developments can impact on lands abutting them but a residential subdivision in Hull, Quebec gives an interesting overview of problems faced and overcome. Stormwater runoff patterns were substantially altered by the development after construction of the subdivision started in 1992. Much of the runoff is now directed into the existing Ruisseau Leamy channel, increasing normal storm flow ...
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Influence factors and prediction of stormwater runoff of urban green space in Tianjin, China: laboratory experiment and quantitative theory model
The effects of limiting factors such as rainfall intensity, rainfall duration, grass type and vegetation coverage on the stormwater runoff of urban green space was investigated in Tianjin. The prediction equation of stormwater runoff was established by the quantitative theory with the lab experimental data of soil columns. It was validated by three field experiments and the relative errors ...
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Near and Dear: Revitalizing Titusville - Case Study
Working in conjunction with the City of Titusville and Ramage Contracting of Mims, FL, EcoSense International (ESI) has designed a new DeNitra-Vault for the Titus Landings Shopping Center, which is currently under construction. The Titus Landing Shopping Center has had to overcome many snags on its road to fruition and the stormwater improvements incorporated into the design are no ...
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Project - Near and Dear: Revitalizing Titusville
EcoSense to Install a DeNitra-Vault™ at the New Titusville Mall Working in conjunction with the City of Titusville and Ramage Contracting of Mims, FL, EcoSense International (ESI) has designed a new DeNitra-Vault™ for the Titus Landings Shopping Center, which is currently under construction. The Titus Landing Shopping Center has had to overcome many snags on its road to ...
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Retrofitting a stormwater retention pond using a deflector island
Stormwater retention ponds are one of the principal methods to treat stormwater runoff. Analysis of residence time distribution (RTD) curves can be used to evaluate the capability of these ponds for sediment removal. Deflector islands have been suggested as a means of improving the performance of retention ponds, due to their diffusing the inlet jet. In this study, the effect of an island on ...
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Washington State DOE stormwater report - Case Study
Fitesa, a non-wovens manufacturer in the state of Washington consistently tests stormwater but experienced problems meeting the stormwater standards for zinc and copper discharge. Zinc is used in galvanized metal, shingles, finishes in paints, and car tires—zinc iseverywhere. Copper is used in items such as in brake linings and pressure treated lumber. At sites near heavily traveled roads, ...
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