HomeMy WebLinkAbout1999-06-11 NSP Ltr to OPHh5p
Northern states Power Company
414 N icollet Mall
Minneapolis, MN 55461
Telephone (612) 336 -5560
June 11, 1999
From:
Mr. Mark Fritsch
Plant Manager, A. S. King Plant
1103 King Plant Road
Bayport, MN 55003
To:
Mr. Thomas M. Melena
City Administrator
City of Oak Park Heights
14108 North 57th Street
P.O. Box 2007
Oak Park Heights, MN 55082-2007
Dear Mr. Melena
This letter is to inform you of our intention to apply a layer of clean fill to a previously
closed portion of our ash disposal facility located in Oak Park Heights. The area
where filling is proposed is the Phase 4/Cells 1 and 2 area located in the northwest
corner of the site. There are a number of positive aspects to installing this fill over
the cap.
The increase in total depth of the soil over this part of the site enhances the
performance of the existing cover by providing even more storage within the
soil column.
® The current runoff from this area is to the Northwest which enters the city
storm sewer system. The proposed fill plan redirects the runoff to the South
and East which will be captured in our water retention ponds prior to being
discharged offsite.
The fill will make this portion of the site potentially usable for public good
projects, such as play areas or some other function.
In addition, we propose to install a soil berm along the north border of our active
operations. The berm would be approximately 8' high and the slopes would be
seeded and mulched. A 7' high chain link fence would be placed on top of the berm
and the fence would completely enclose our active area. We believe the berm will
be effective in separating our operations from the surrounding community and will
provide needed security to the site.
The MPCA has reviewed and approved the fill plan based on their concurrence that
the fill is an enhancement to the existing cover. The fill is coming from a greenfield
construction site in Woodbury and the total amount of fill placed would be in the
range of 16,000 to 20,000 cubic yards. The site will have topsoil applied and will be
seeded and mulched upon completion of the fill placement. A drawing of the work
proposed is enclosed for your review
Please feel free to contact me if you have any questions regarding this work.
Sincerely,
Mark J. Fritsch
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