Closer to home, just this past month, in Coos Bay, Oregon, an intense rainstorm that dropped over 5 inches of rain over two days overwhelmed our sewer system and caused the release of over 36,000 gallons of sewer overflows into Coos Bay through the storm drain system
According to the situation report, about 30,000 gallons of diesel fuel was spilled to the power plant's secondary containment area and a valve on the containment area failed, releasing about 2,500 gallons of diesel into the city's storm drain system
And a study by San Jose, California found that a 2011 ban instituted there has led to plastic litter reduction of "approximately 89 percent in the storm drain system
, 60 percent in the creeks and rivers, and 59 percent in City streets and neighborhoods."
The bylaw also prohibits non-storm water discharges from entering the municipal storm drain system
The suit, which focused on BWSC's failure to control pollution from its storm drain system
, petitioned for the expedited removal of illicit sewage connections from the system and the implementation of more effective controls to prevent pollution from flowing into the city's storm drains.
The project was designed to collect stormwater runoff so peak flows and flow durations match pre-project conditions and to prevent pollutants from entering the storm drain system
. The plaza's on-site stormwater management is achieved with permeable pavers, infiltration planters and Silva Cells.
Board members voted after learning from the California Division of Occupational Safety and Health that the company violated a recent agency edict five times this month that said no one could come within six feet of any openings or entries to the site's storm drain system
, where two brothers were found unconscious and subsequently died
EPA Region 10 reported the North Boeing Field storm drain system
carries stormwater to the Duwamish River through more than seven miles of catchment basins, drains, inlets and oil-water separators.
The storm drain system
was specifically designed to ensure that water flowed only in one direction.
Most of that water now runs along city streets and is collected by the storm drain system
The company installed pavers that are set apart from one another to allow storm water to percolate down between the brick to the gravel beneath it, dissipating by itself rather than entering the city's storm drain system
. According to Borst, this method is becoming more widely used in the commercial sector but is still a new concept for residential construction.
Specifications called for a technology capable of treating a six-month storm event and by-passing up to a 10 year storm event without surcharging the upstream storm drain system
. The available space for installation was a factor, as was the cleaning effectiveness of the various technologies.