HomeMy WebLinkAboutItem 05.b4p
L-
Project Updates
Water Treatment Facility Improvements.
The new section of reservoir passed
Rs leak test. The contractor is
installing drain tile and back filling
around the reservoir. The Utilities
Division will drain the reservoir on
October 5 to allow the contractor to
begin demolition of the wall
between the existing and new
halves of the reservoir. Additional
work that will be starting in October
includes installation of a high service
pump, the electrical work and
piping for installation of the
backwash blower, and upgrades to the fluoride system.
with completion of all items by January 2016.
LAKEVILLE PUBLIC WORKS
Christopher Petree, Director
September 2015
2015 Street Reconstruction.
Restoration work is underway in
both project areas as road
reconstruction reaches its final
phases for the year. Utility
installation is complete in all areas.
The remaining curb and gutter were
completed in mid-September along
16911 Street and portions of 168th
Street. Final grading for the
remaining areas was completed
during the week of September 28 in
preparation for the base course of
The project is on schedule
asphalt. The project is on schedule.
Holyoke Avenue Water Tower.
Pours for the shaft and dome panels continue,
though recent rain has slowed work on the shaft.
Pours are anticipated to continue at a rate of three
pours per week, weather permitting, until the shaft is
completed in early November. In total, they will
pour 12 ring walls and 16 dome panels. Fabrication
of the tank will begin once the shaft is complete and
carry on through the winter. The tower is expected
to be online in the fall of 2016.
Well 20 Construction.
Drilling and development of the well
are complete and worked focused on
removing sand that sloughed into the
hole during development. Over 175
tons of sand was removed from the
hole. The drilling rig and other
equipment have been removed from
the park and the contractor is working
on removing the remaining sand and
restoring the site. Finalizing pumps,
motors, and controls will continue
into the fall with the well expected to
be online by the end of the year and fully available in the summer of 2016.
Kensington Boulevard Improvement Project.
Paving is complete along Kensington
Boulevard with the application of the
asphalt wear course on Wednesday,
September 30, and new LED street
lights have been installed.
E
Miscellaneous Roadway Repairs.
Rain delayed the final grading and
preparation of the City Hall north
parking lot for its first layer of asphalt.
Work continued on September 28 in
anticipation of application of the
asphalt base layer that week, followed
by the wear course for the entire
parking lot. The base layer of asphalt
was applied at Fire Station 2 in mid-
September.
CA Cathodic Protection
A key component of the Kensington Boulevard l
improvements was buried along the roadway. -r¢
Cathodic protection was installed along the
length of the Kensington Boulevard water =
main in an effort to protect the existing ductile%
iron water main pipe from corrosion. With
cathodic protection, sacrificial anodes were
installed along the length of the water
main. These anodes will work to "protect" the
water main pipe, as the sacrificial metal will
corrode instead of the ferrous material to
which it is attached. Manufacturers of
cathodic protection technology suggest that;
the typical life expectancy for a sacrificial
anode is 20 -years, however, there are many
cathodic protection systems that have
functioned in excess of 30 -years. While
installation of cathodic protection does not guarantee the complete absence of
water main breaks, research has shown that the installation of sacrificial anodes will
significantly reduce the number of breaks over the life of the pipe. The installation
of cathodic protection will help to maintain the integrity of the existing water main
pipe until such time as the roadway is completely reconstructed and the water main
pipe is replaced.
3
OA East Lake Fish Survey
The fish population in East Lake has rebounded dramatically after a severe winterkill
in 2012. Based on the latest fish survey from 2015, the number of black crappies is
off the charts. Black bullheads and carp numbers are also extremely high and these
bottom feeding fish could be contributing to poor water in East Lake. Because East
Lake is susceptible to winterkills, dissolved oxygen should be monitored over winter.
Mother Nature may, very well, rebalance the fish community in the next year or two.
Valve Repair
Utilities Division staff were out WF
exercising hydrants near
Schneiderman's furniture when
water starter bubbling out of a gate
valve in the middle of the
intersection. Shutting water off to y.
that valve resulted in several"
businesses without water for the ,
duration of the repair. Temporary
water service was arranged for the
adjacent motel. Equipment was
brought in and the area around the
valve excavated. Corrosive soils
had weakened several of the bolts around the valve cover and the change in water
pressure during hydrant exercising caused the bolts to release enough to displace
the gasket and allow water to flow up to street level. The bolts were replaced and
the water main put back in service. The entire process took about two hours.
4
East Lake
(20July2010)
Standard Trapnets
Fish/net
East Lake
(14-15 Sept 2015)
Standard Trapnets
Fish/net
MN DNR Normal
Range for Similar
Type of Lakes
Fish/net
Black bullhead
42.3
347
1.1-25.2
Black crappie
8.9
467
1.2-4.8
Bluegill
1.4
34.5
4.9-49.8
Ca rp
1
5.8
0.4-1.6
Goldfish
0.3
1
NA
Golden shiner
4.1
--
NA
Green sunfish
6.8
0.3
0.2-2.1
Hybrid sunfish
0.5
--
NA
Largemouth bass
--
6.4
0.3 - 1.3
Northern Pike
-
0.3
NA
Pumpkinseed
--
1
1.7- 10.3
White sucker
0.7
14.3
0.2-2.2
Yellow perch
0.6
13.4
0.4-3.5
Fathead minnow
2
--
NA
Turtle - painted
2.6
2.1
0
Turtle - snapper
1.4
1.4
0
Valve Repair
Utilities Division staff were out WF
exercising hydrants near
Schneiderman's furniture when
water starter bubbling out of a gate
valve in the middle of the
intersection. Shutting water off to y.
that valve resulted in several"
businesses without water for the ,
duration of the repair. Temporary
water service was arranged for the
adjacent motel. Equipment was
brought in and the area around the
valve excavated. Corrosive soils
had weakened several of the bolts around the valve cover and the change in water
pressure during hydrant exercising caused the bolts to release enough to displace
the gasket and allow water to flow up to street level. The bolts were replaced and
the water main put back in service. The entire process took about two hours.
4