HomeMy WebLinkAbout09-28-1995 - MCWD - repair of rip rap H4 e,�� MINNEHAHA CREEK WATERSHED BOUNDARY 1.
AIL: WATERSHED DISTRICT• NNtP
Fqs •
•
S•C 15500 Wayzata Boulevard NED a �9
Suite 611 Twelve Oaks Center �Fgy4
Wayzata, Minnesota 55391 I CREEK
LAKE MINNETONKA
office:(612)476-7970 fax:(612)476-7973
BOARD OF MANAGERS:John E.Thomas,President;Pamela G.Blixt,Vice President;Martha MINNESOTA RIVER
S. Hartfiel,Secretary;Thomas W. LaBounty,Treasurer;Monica Gross;C.Woodrow Love;
Thomas Maple,Jr.; District Director Eugene R.Strommen
September 28, 1995
Anthony Soderman
975 Wildhurst Trail P 2
Orono, MN 55323 ‘St •
Dear Mr. Soderman,
I participated in a site inspection of your shoreline yesterday with City of Orono staff BruceVang,
Inspector, and Lyle Oman, Building Official. Based on previous conversations with you and City
of Orono staff, it was determined that a site visit to verify existing conditions was in the best
interest of all parties involved. The purpose was to determine permitting requirements for repair of
the rip rap system; fill behind the rip rap and fill in low areas of the lawn.
My previous correspondence to you indicated that routine repair of rip rap is considered
maintenance and a watershed district permit is not required. Upon inspecting the site, however, it
is apparent that the block pieces in the water along your shore are remains of a failed rip rap
system that is beyond repair.
It is evident that you have lost shoreline over the years and to prevent further erosion you are
encouraged to install a structurally sound rip rap system. This would involve a base of granular
filter material and geotextile fabric covered with randomly placed fieldstone or limestone. More
detailed design criteria, including required slope and maximum distance waterward, is specified in
the attached documents. Please be advised that shoreline work done within the floodplain must be
done by the landowner or by a licensed shoreline contractor(list attached). Mr. Vang, Mr. Oman
and myself agreed that a new rip rap system should be installed along the existing grass line
(versus in the water). Installing rip rap where the old line was and backfilling to replace years of
erosion is not acceptable to the watershed district or to the city.
Up to 1"of top soil is allowed by the watershed district to fill the depressions in your lawn. A
watershed district permit(for shoreline improvement) would be required for rip rap. If you elect to
do the work yourself, please submit a cross-section indicating elevations, slope, materials to be
used and the distance the project extends waterward (5'maximum). Applications need to be
submitted 21 days prior to the board meeting for engineer review and recommendation. If you have
a licensed contractor install the rip rap, the application can be reviewed by staff and turned around
within 2-3 days.
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60%Recycled • 30%Post-consumer
The old rip rap line contains a significant amount of broken concrete blocks and an old tire. Please
remove these items at your earliest convenience as this type of material in the floodplain violates
watershed district and DNR regulations. If you choose to install rip rap please obtain preliminary
permit approval from the City of Orono. Municipal approval is required prior to watershed district
approval.
I hope this letter thoroughly addresses your questions. I have also enclosed district information on
policy and procedures. Thank you.
Sincerely,
1►�-
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Suzann:M. Weedm
Assi vDistrict Director
cc: Bruce Vang, City of Orono Inspector
Lyle Oman, City of Orono Building Official
City of Orono file