HomeMy WebLinkAboutItem 05.cPublic Works
July 2012
LAKEVILLE PUBLIC WORKS
Christopher Petree, Director
July 2012
Pressure Reducing Valve Installation
Recently, Utilities Division staff worked alongside a contractor on
installation of a pressure
reducing valve (PRV) near
Hamburg Avenue and
Hartford Way. The purpose
of the valve is to connect
the high pressure water
main along Hartford Way --
with a low pressure portion
of the water system that
runs south into the Airlake
Industrial Park. The PRV
allows the water system to
be looped and not dead
ended along Hartford
Way. A dead end water
main can pose problems
with water flow resulting
in stagnant water. Also,
a dead end main can
pose problems for fire
flow since the water only
comes from one
direction. Looping the
system through the PRV
allows water to flow
through the system and
provides another source
of water for the low
pressure zone in and around the industrial park. The PRV functions to
regulate the downstream water pressure to a useable level and restrict the
flow of water from the high pressure side. Without a PRV, water from the
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high pressure zone would run down into the low pressure zone, eventually
draining all of the Dakota Heights and North Park storage while the Airlake
tower overflows.
• Debris Disposal
The storm on the morning
of June 19 had a
tremendous impact on the
City and left a significant
amount of tree and
vegetation debris in its
path. Public Works staff
completed the final round
of debris pickup during the
week of July 9 and added
it to the pile around the
Central Maintenance
Facility. During the week
of July 16 a tub grinder
was set up to begin the
process of reducing and
removing this large pile
of debris. The tub
grinder was brought in
by Environmental Wood
Supply in St. Paul which
uses the wood waste to
fuel St. Paul's combined
heat and power plant. In
all, they removed 66
trailer loads of wood
chips at approximately
100 yards per load. This
totals just over 3 million pounds of wood chips. The chipping crew worked
for 4 days to reduce the tree trunks and limbs into a manageable and
transportable commodity.
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North Park Trail Paving
The improvement of the
North Park Trail has been
an important project on the
Parks and Recreation
Department list. The trail
has seen heavy use since its
installation and was
showing its age with a
variety of surface failures
and other problems.
Recently, the Engineering
Division coordinated the
reclamation and repaving
of the trail. To begin, the
asphalt and several inches
of the underlying gravel were ground up and mixed together and left to form
the base for the new trail. This base was graded and compacted and the new
asphalt was laid over the top. Other trails being repaved include a segment
along 165 Street and a segment along 175 Street.
• Project Preparation
In preparation for a project
to upgrade the fuel system
at the Central Maintenance
Facility, Streets Division
staff cut a trench between
the two fuel islands.
Electricians followed up by
installing conduit between
the two pedestals that are
used to authorize the
dispensing of fuel. Fiber
optic cable pulled through
the conduit will link the
two new pedestals with a
front end computer and
the City's network. This will system will authorize the dispensing of fuel and
track transaction information for later reporting and reconciling with
department budgets. The fuel system upgrade will be completed this fall.
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