ITEM 6.2 Dust Control0
Otsezo
MINNESOTA V
DEPARTMENT INFORMATION
Request for
City Council Action
ORIGINATING DEPARTMENT:
REQUESTOR:
MEETING DATE:
Public Works
City Engineer Wagner
April 28, 2014
PRESENTER(s):
REVIEWED BY:
ITEM #:
Consent Agenda
City Administrator Johnson
6.2
AGENDA ITEM DETAILS
RECOMMENDATION:
Public Works Subcommittee recommends approval of placement of 4350 linear feet of dust
control in front of the 9 residents along 70th Street between Oakwood Avenue and McAllister
Avenue to retain existing gravel and mitigate dust until the 70th Street Improvement Project
begins.
ARE YOU SEEKING APPROVAL OF A CONTRACT?
No
IS A PUBLIC HEARING REQUIRED?
No
BAC KG R O U N D/J U STI F I CAT I O N:
At a recent Council meeting, a resident expressed concern to the council that 70th Street has
little to no gravel and may be in an unsafe condition. Council requested staff review the streets
condition, prepare estimates for dust control and additional gravel and make a
recommendation to the public works subcommittee.
Brad Belair, Street Department Supervisor, and I drove the 70th Street on March 26th, two days
after the council meeting and videoed a drive along the section from CSAH 37 to McAllister Ave.
We drove the street at 50 mph, excepting the curves which we slowed to 30 mph. The center
of the street was in good shape. Areas of marginal concern were the edges where either
virtually no ditches exist or areas where snow drifts were two or three feet deep and were
creating melt water softening the edges. Some driveway entrances and mailbox locations were
rutted from vehicle traffic in those locations. A blade was subsequently sent out to the area to
pull in the gravel and smooth the surface. Brad and I again drove the street on April 9th and
the street was still passable at 50 mph although with the recent drying weather dust was an
issue. The street was noticeably "soft" but by this time as the thaw has softened the clay road
bed down three feet and will need time to firm up. Also, the loosened gravel from the recent
blading adds to the "soft" feeling of the street.
Brad and I estimated 4350' of dust control at 18' wide would be required in front of the nine
homes. This is estimated to cost $2,200. This was based on calcium chloride being applied at
0.27 gal/sy at a cost of $0.96/gallon.
We discussed additional gravel and determined 4" of new gravel would be excessive knowing
the street will be reconstructed in a year or so. Using 2" of new gravel for one mile is estimated
to cost $16,000. This was based on $13,000 for gravel delivered to the street at $8/ton and
$3,000 for placement using a roller and a road grader for 16 hours.
The total cost using this method would be over $18,000 or more than $2,000 per home.
Soils borings along 70th Street that were conducted in late 2012 indicated most of the street
had at least 4" of class 5.
The Public Works Subcommittee recommend placement of dust control in front of the residents
and maintaining the street to an acceptable standard.
It should be noted that once construction starts the responsibility of maintaining a passable and
dust free street will be passed to the contractor via a stringent haul road specification.
SUPPORTING DOCUMENTS: ATTACHED X NONE
MOTION: (Please word motion as you would like it to appear in the minutes.)
Motion to accept Public Works Subcommittee recommendation and approve placement of
4350 linear feet of dust control in front of the 9 residents along 70th Street between Oakwood
Avenue and McAllister Avenue to retain existing gravel and mitigate dust until the 70th Street
Improvement Project begins.
BUDGET INFORMATION
FUNDING: BUDGETED: YES
Street Department Dust Control
Fund #10143100-436 X NO
ACTION TAKEN
❑ APPROVED AS REQUESTED ❑ DENIED ❑ TABLED ❑ OTHER (List changes)
COMMENTS: