HomeMy WebLinkAboutEGD-031-09Cl~i~~;tol1
Leading the Way
Meeting: COUNCIL
ENGINEERING SERVICES
~~~s~E~~a,~ ~ C-6/~-69
•
Date: Monday October 26, 2009
Report #: EGD-031-09
File #:
By-law #:
Subject: MILL STREET, ORONO ROAD REPAIRS
RECOMMENDATIONS:
It is respectfully recommended:
1. THAT Report EGD-031-09 be received;
2. THAT the Mill Street, Orono road repair works be added to tender CL2009-22,
Concession Roads 7 & 8 rehabilitation project;
3. THAT the funds required to cover the Mill Street, Orono road repairs in the amount of
$35,000 be drawn from the 2009 Engineering Capital account #110-32-330-83212-
7401;
4. THAT the Mill Street, Orono road repairs works be undertaken and completed in an
immediate and timely fashion.
~r
ils ~ ~ ..
Submitted by: A.S. Cannella, C.E.T.
Director of Engineering Services
ASC'jb
October 23, 2009
~~5~
Franklin Wu
Chief Administrative Officer
CORPORATION OF THE MUNICIPALITY OF CLARINGTON
40 TEMPERANCE STREET, BOWMANVILLE, ONTARIO L1 C 3A6 T 905-623-3379 F 905-623-9282
REPORT NO.: EGD-031-09
PAGE 2
1.0 BACKGROUND
In late July, a section of Mill Street, Orono in the vicinity of house #60 experienced road
damages resulting from the slope failure of the roadside embankment. Upon
investigation it was concluded that the slope failure was attributed to the existing asphalt
gutter being unable to contain and convey water runoff to the nearby outlet. The gutter
failed due to the settlement of the ground supporting the asphalt gutter.
The proposed solution is to construct a concrete gutter for the length of the guiderail
section to properly convey flows to the existing outlet at the south end of the existing
guide rail. Additionally the Operations Department had requested that the concrete
gutter be extended approximately 50 m north on the west side of the road to address
ongoing drainage concerns affecting the resident immediately north of the guide rail at
#60 Mill Street.
The proposed work will require the area below the proposed curb to be excavated,
inspected by a geotechnical consultant and a proper granular road base constructed
under the proposed curb to prevent future settlement. The slope will be backfilled,
compacted, topped with topsoil and seeded. Approximately 12 guide rail posts will also
be replaced to straighten the guide rail.
In order to expedite the repair we have requested Coco Paving Inc., the successful
contractor for the recent tender CL2009-22, Concession Roads 7&8 Rehabilitation, to
provide a quote for the work as an extra to the this tender. The contractor has provided
the following:
$16,340.00 - Part A - Slope Failure Repair
$ 8,150.00 - Part B - Extension of Concrete Gutter
24 490.00
REPORT NO.: EGD-031-09
PAGE 3
Staff have reviewed this quotation and find the project costs to be competitive. In
addition, due to the nature of work and the uncertainty of the base conditions, staff
recommend that a 25% contingency allowance be used for each section resulting in the
following funding requirements for the work:
$20,500 - Part A
10 500 - Part B
$ 4,000 - Design/Geotechnical
$0 - Inspection (Municipal Staff)
35 000 Total Project Costs
2.0 CONCLUSION
It is recommended that the proposed works be undertaken by Coco Paving Inc. in
conjunction with tender CL2009-22, Concession Roads 7&8 Rehabilitation and that the
funding for this work be provided from the unexpended funds from the 2009 pavement
rehabilitation account, #110 32 330 83212 7401. Work under the pavement
rehabilitation account was deferred to 2010 due to the tendering freeze that occurred in
August of this year.
The Director of Finance has reviewed the funding requirements for these works and
concurs with the recommendations.