HomeMy WebLinkAbout2002-07-05 OPH Ltr to Owner Re Storm Water Erosion Control cl
OAK PARK HEIGHTS
, ` r r 14168 Oak-Park Boulevard No. • P.O.Box 2007 • Oak Park Heights,MN 55082-2007• Phone 651/4394439 • Fax:651/439-0574
July.5 2002
ooft
Goldridge Group
S&C Bank
5795 Morning Dove Avenue
Oak Park Heights, MN 55082
Hand Delivered:
Re:Storm Water Erosion Control Oak Park Station
Inspection of the erosion control fencing at Oak Park Station revealed that most of the
fencing was in need of repair since the rain storms in mid June. Routine inspection and
maintenanceof your erosion control is both a requirement of your developer's Agreement
and of your Browns Creek Watershed Permit. According to the engineers for Browns
Creek Watershed District this development is to be reviewed at their Board meeting on
Monday July 8,2002.
If significant improvements are not made in erosion control by the afternoon of July 9th'I
will request a review of your developer's agreement at the City Council meeting that
evening. Specific improvements will include the re-installation of the silt fences that are
no longer standing or are underneath the eroded soils and the filling washouts that have
occurred beneath the erosion:control mat that was applied but apparently never planted
with vegetation.
A signed contract with an erosion control contractor or landscaper with specific expertise
in native grasses to install the vegetation that is required for stabilization of the side
slopes should be available by Friday July 12th. The
contract should specifythat the
vegetation will be planted prior to July 26th and the area will be watered as required for
the remainder of the growing season.The watering requirement would not have been
necessary if the area had been properly planted last fall or this spring as the vegetation
would have been established at this time.
The erosion that has occurred to date needs to be removed from the pond per the
following requirements of your developer's agreement and per the requirements of your
Browns Creek Watershed Permit:
"Erosion
In the event that the side slopes of the stormwater management ponds
erode the short-term maintenance requirements may include the following:
Tree City U.S.A.
1 Excavation of sediment where it is accumulating in the basin with
light earth moving equipment. _
2 Re-grading of the side :slopes and bottom of basin.(if-necessary)
. - with light earth-moving equipment
A
3. Re-seeding as originally specified in the vegetationmanagement
plan.
4. Installation of an appropriate erosion control blanket to reinforce the
side slopes if deemed necessary by an erosion control specialist." -
If you have any questions,please contact me at 651-439-4439 or Mitch Johnson;
Engineer for Brown Creek Watershed District at 651-770-8448.
Sincerely,
Jay E. Johnson,PE
Public Works Director
CC: . Mayor and City Council
Kim Kamper, City Administrator
Mark Verling, City Attorney
Mitch Johnson, Emmons& Olivier Resources
Jim Butler, Building Official