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STORM.. ATER RUNOFF TREATMENT AREA
<br />CONSTRUCTION PROJECT
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<br />City of Eugene
<br />Public wodcs
<br />Engineering
<br />Wildish Construction Co., contractor for the improvement on Goodpasture Island Road, will begin
<br />constructing a stormwater runoff treatment area near the Dena Ponds during the week of September 2I. The
<br />area will be directly across the street from the entraance to the Boulders on the River apartments.
<br />This is one of the first projects of its type in the Eugene area. These prototypes will help us better
<br />understand the effectiveness of using natural areas to treat stormwater. City staff will closely monitor the area.
<br />As we learn more about how these stormwater treatment systems work, we may have to make adjustments to
<br />ensure they operate as planned.
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<br />ST~RMWATER RUNOFF
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<br />REATMENT ARE
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<br />~::.~ ~ The stormwater runoff treatment area
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<br />Delta Ponds. Two storm sewer lines will
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<br />six feet wide and will follow the contour
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<br />the runoff so ~t can spread over a wider
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<br />slowly to tic Delta Ponds, filtering
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<br />remove existing vegetation and soil. A
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<br />improve the site by planting grasses in the
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<br /> reintroducing willows along the banks of
<br /> the Pond.
<br />WHAT IS STORMWATER RUNOFF
<br />As land develops, Viand surfaces become covered with buildings, parking lots, and roads. These impervious
<br />surfaces make it mare diflrcult for rain to percolate, by natural means and by natural rates, into the groundwater,
<br />Instead, rain becomes runoff that flows into the storm conveyance systems. These systems are not connected to
<br />the wastewater treatment plant, but flow directly into local waterways, such as the Willamette River. The runoff
<br />picks up and carries any pollutants from the surfaces aver which it travels. In general, the greater the amount of
<br />impervious surface on a parcel, the greater the quantity of stormwater runoff from the parcel,
<br />WHY DO WE HAVE TO TREAT STORMWATER
<br />In recent years, federal and state agencies have become concerned about the quality of stoimwater and the
<br />degradation of natural resources inside urban areas. Revisions to the federal Clean Water Act are requiring
<br />cities with populations over 100,000 to develop comprehensive stormwater management plans that will reduce
<br />the amount of pollutants entering streams and channels through stormwater runoff.
<br />The city is currently developing a stormwater management plan that is unique in its effort to incorporate
<br />natural drainageways, open channels, and wetlands into an overall management strategy.
<br />FOR MORE INFORMATION
<br />For more information about the stormwater runoff treatment area, please call the stormwater/wetlands
<br />program at 683-6839. For information about the road construction project, call Bud DeSands at 687-5291.
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