Tag: stormwater discharge

A first flush is the initial runoff of a rainstorm. During this phase, polluted water entering storm drains in areas with high proportions of impervious surfaces is typically more concentrated compared to the remainder of the storm. Consequently, these high concentrations of urban runoff result in high levels of pollutants discharged from storm sewers to surface waters.

The First Line of Defense: Protecting Inlets and Storm Drains

The First Line of Defense: Protecting Inlets and Storm Drains

In stormwater management for both temporary and post-construction measures, inlet and storm drain protection is one of the first lines of defense. It’s also a measure that often works in combination with other best management practices (BMPs) as part of an overall erosion control or stormwater management program.

Inlet and Storm Drain Protection

Inlet and Storm Drain Protection

In stormwater management for both temporary and post-construction measures, inlet and storm drain protection is one of the first lines of defense. It’s also a measure that often works in combination with other best management practices (BMPs) as part of an overall erosion control or stormwater management program.

Reader Profile: Jon Wilson

Reader Profile: Jon Wilson

Many benefits can accrue when municipal staff is involved with helping a state administer a National Pollutant Discharge Elimination System (NPDES) industrial stormwater discharge permit. Such is the case in Eugene, OR, where Jon Wilson, CSM, lends technical assistance to carry out a memorandum of agreement (MOA) with the Oregon

Utilizing GIS to Identify Potential Sources of Illicit Discharges

Utilizing GIS to Identify Potential Sources of Illicit Discharges

Eliminating illicit discharges is one of the most fundamental yet challenging elements of an effective municipal stormwater program. Unregulated discharges from industrial and commercial activities can cause pollutants to slowly accumulate and cause the receiving waterbody to exceed the in-stream water-quality criteria for its designated beneficial use.

California’s New Industrial Permit

California’s New Industrial Permit

Few words may strike more anxiety in the hearts of business owners than “new industrial regulations.” And in California’s industrial sector, it is safe to say that anxiety is likely reaching new levels as businesses grapple with the fine print of the state’s long-in-coming General Permit for Storm Water Associated

Stormwater Takes Its Role in Aquifer Recharge

Stormwater Takes Its Role in Aquifer Recharge

It’s not always clear where water can be found or how much of it is available, and in the face of dramatic climate change, it’s even more uncertain how much quality water will be available in the future. Due to changes in climate, development pressure, and rising consumption, rivers and

Inlet Protection During Construction—and After

Inlet Protection During Construction—and After

Water—a simple molecule of one oxygen and two hydrogens, with such a simple design. It’s the very structure of water that makes it strong enough to force boulders loose on a hillside. By water’s polarity, water molecules attract more water molecules and soon the long branched “polymers” are strong enough

Using a Geographic Information System (GIS) to Identify Illicit Discharges

Using a Geographic Information System (GIS) to Identify Illicit Discharges

The city of Eugene’s decision to use a geographic information system (GIS) to identify potential sources of illicit discharges occurred in 2009 when an industrial facility’s aboveground storage tank leaked approximately 730 gallons of off-road diesel in close proximity to the stormwater conveyance system, which discharges to the Willamette River

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