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Public Works
June 2012
Lc:Deo/Ile
Storm Response and Cleanup
Early on the morning of
Tuesday, June 19, Lakeville
experienced a strong, fast
moving storm that came with
high winds and hail. In many
areas of the county it was no
more than a nuisance. It had
moved out of the area within
an hour. In Lakeville, however,
it left behind downed trees,
blocked roads, and power
outages. Initial reports of
storm damage came into the
Public Works Department
before the storm had ended and crews
from the Public Works and Parks
Departments were out into the worst of
the areas before 5:30 a.m. that morning.
The initial work focused on opening up
blocked streets and assessing damage.
Most of the streets were opened by
mid - morning with exceptions due to
downed power lines. Once the extent
of the damage was known, contractors
and rental equipment were brought in
to augment City staff. Areas that were
hardest hit were the areas around Dodd
Park, south of Dodd Boulevard, the
downtown area, and areas north and
east of Lakeville South High School.
Some City facilities suffered minor
LAKEVILLE PUBLIC WORKS
Christopher Petree, Director
June 2012
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damage as well. Storm c .�
response efforts for the
week immediately
following the storm focused .
on removing downed trees
and cleaning up
neighborhoods. Cleanup
efforts during the following
week focused on removal
of cut limbs and branches
that were brought out to
the curb by residents. A
storm damage assessment
is ongoing to check and
remove tree limbs
damaged by the storm
and determine the health
of trees that suffered
minor damage. City staff
continues to check storm
water outfalls and
drainage areas to ensure
downed trees and limbs
will not impede the flow
of storm water. City
crews have been through
the damage areas at least
twice to pick up or chip -
trees and vegetation left at the curb side. Residents are asked to have all
remaining limbs and branches at the curbside no later than Monday, July 9,
for final pickup. After that time, residents must take storm damaged items to
drop off areas outside of Lakeville. For the latest updates on the City's storm
cleanup efforts, visit the City's website.
+ Water Main Installation
The street reconstruction project in
the Valley Park area is well under
way. One of the first things
accomplished was the replacement
of the water main on Galaxie Way
between Franchise Avenue and
167 Street. The contractor had
two crews working on the
replacement, removing the old
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water main section by section
and installing the new plastic
water main in its place. As a
section of pipe was laid, crews
immediately backfilled and
compacted the area. The
importance of this water main
replacement was highlighted as
crews pulled out the old pipe
revealing 17 repairs in this
relatively short, almost 1,400
foot, run of pipe. Residents were
supplied with temporary water
from a hydrant outside the work zone hooked directly into their home system.
In all, the water main replacement along Galaxie Way took 4 days to install
the temporary water. supply, 2 days to remove and install the new main and 2
days to make service connections to the 21 residents. Another day was spent
in bacteria testing to make sure the main was clean and ready to deliver
potable water.
• Rain Garden Installation
Rain gardens are not new to Lakeville. The
Environmental Resources staff has been
recommending their installation and benefits
for several years and has designed and installed
gardens at various locations in the City, most
recently at North Park. Rain gardens are small
gardens designed to infiltrate storm water
runoff. On the surface, it looks like an attractive
garden, but the soils and plantings chosen
reduce the total suspended solids (TSS),
phosphorus, and bacteria in the storm water
which helps to improve the quality of the water
that returns to the watershed. The North Park
rain garden is approximately
2,000 square feet and is designed
to infiltrate the first '/" of rainfall
from 90% of the adjacent parking
lot. The City received a grant
partnership from the Dakota
County Soil and Water
Conservation District, which
covers 65% of the cost of the rain
garden installation. At the North
Park rain garden there are 7 River
birch trees, 35 Red -osier dogwood
shrubs, 200 Karl Forester grasses,
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200 Little bluestem grasses, and 70 Black -eyed Susans. The Lakeville Rotary
provided a generous donation for the purchase of most of the plants and
assisted in planting a portion of the garden as well. The importance of rain
gardens for Lakeville is their capacity for improving the quality of storm water
as it enters the storm system, contributing to green infrastructure, and
promoting a sustainable community.
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