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<br /> Staff Photo by John Croft
<br /> rhis wetland mitigation site was created by the Transportation Department under a ramp at the Interstate Hwy. 394-Hwy. 100 interchange:
<br /> Elsewhere,Twin Cities mitigation • ' Company president Carl Peterson
<br /> el
<br /> sites can look strikingly different. said what happened at Olson Lake
<br /> In the shadow of a newly constructed Estates is beyond his control. He said
<br /> entry ramp from Hwy. 100 onto I- he was required by Oakdale and the'
<br /> 394.for instance, is an improvedValley Branch watershed district to
<br /> wetland with open water,mallards, . store storm water runoff from Olson
<br /> Lake Estates somewhere on the de-
<br /> islands sprouting cattails,silt fences velopment site.Also.because of ob
<br /> to prevent erosion and a carpet of jections from nearby property own-
<br /> rocks carefully placed along the slope ers,Oakdale and watershed district
<br /> rising beneath the concrete ramp. officials haven't been able to find a
<br /> The site,engineered by the State De- route to siphon off excess water from
<br /> partment of Transportation,is part the lake.As a result,the lake's outlet'
<br /> of the mitigation for the 121/acres of culvert has been plugged up for sev
<br /> wetlands filled during the 1-394
<br /> project. eral years,with no relief in sight.
<br /> • "The way it's done now is the way it,
<br /> In Oakdale,a 12-acre storm water ' was approved,"Peterson said."We
<br /> holding pond that serves as Olson . ., understand the water level now is
<br /> Lake Estates'centerpiece is morehigher than it would normally be.. .,
<br /> man-made lake than wetland,having [but]it's no fault of ours."
<br /> inundated the 3-acre wetland once
<br /> located at the south end of the pond.' Such a mix of results aside.a ques-
<br /> tion remains:Can a man-made wet
<br /> The site designer.Carl W.Peterson land ever make up for the natural
<br /> and Associates Inc..agreed to design, one it's replacing? ',ff
<br /> changes to make the pond more wet-
<br /> lands-like.The firm also used the Said Rockwell:"It's like saying that ..pond as mitigation for some fill at - because there are prosthetic devices
<br /> the south end of the wetlands.and at for amputated limbs,we can lose as
<br /> another site. many arms al we want."
<br /> But Molly Shodeen,the DNR's by-t'_
<br /> drologist for Washington and Anoka;
<br /> • counties,calls the site nothing more
<br /> than"a flooded hole."
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