Basic Information

Reference Number

0000101920

Issuing Organization

Long Point Region Conservation Authority

Solicitation Type

RFP - Request for Proposal (Formal)

Solicitation Number

LPRCA_TEETERVILLE_DESIGN_2018

Title

Teeterville Dam - Design for Repairs

Source ID

PP.AG.ON.928277.C94296

Details

Location

Canada, Ontario, London

Description

The Teeterville dam is an earthen berm structure with a concrete spillway containing wooden stoplogs located within the road allowance of Teeterville Road. Originally the dam abutments and berm supported a bridge deck and roadway until a new bridge was constructed in the 1970’s. The original bridge and road remains on site and have been abandoned.

The structure is approximately 100 years old and experiencing noticeable deterioration. Concrete spalling and exposed steel reinforcement have been observed on the abutments, supports and wing walls. Over a period of time, the Teeterville reservoir has developed characteristic water quality impairments associated with dams being constructed on coldwater systems. Impairments include increased water temperatures, elevated turbidity, accumulated sediment deposition (primarily sand bedload) and elevated nutrient levels in the water column (nitrogen).

In 2015/16, AECOM completed a Dam Safety Review and Condition Assessment (DSRCA) of the Teeterville Dam. The scope of the DSRCA included the following:

Background Review;
Natural Heritage Review;
Dam Inspections;
Hydrotechnical Assessment;
Dam Break Analysis;
Inundation Mapping;
Hazard Potential Classification;
Selection of Inflow Design Flood;
Assessment of Structural Integrity;
Geotechnical Assessment; and
Reservoir Sediment Quantity and Quality Assessment.

The DSRCA identified a number of rehabilitation and maintenance items for the Dam including:

Repair concrete on wingwalls, piers and abutments;
Repair steel truss or design alternatives;
Undertake stability improvements to the dam structure; and
Grout the void below the base slab of the Dam and underlying subgrade.

LPRCA is soliciting proposals to undertake the necessary design work to address the above items. The final design will be used to obtain approval under the Lakes and Rivers Improvement Act (LRIA) from the Ministry of Natural Resources and Forestry (MNRF). Final drawings approved by MNRF will be used for tender and construction.

Dates

Publication

2018/06/25 10:22:34 AM EDT

Bid Intent

Optional

Bid Intent Deadline

2018/07/20 03:00:00 PM EDT

Question Acceptance Deadline

2018/07/13 03:00:00 PM EDT

Questions are submitted online

Closing Date

2018/07/20 03:00:00 PM EDT

Contact Information

Ben Hodi

519-842-4242 ext. 264

bhodi@lprca.on.ca

Bid Submission Process

Bid Submission Type

Physical Bid Submission

Additional Bidding Instructions

The proposal must be marked “Long Point Region Conservation Authority, Teeterville Dam Design for Repairs– Proposal" and addressed to Judy Maxwell General Manager. Proposals will be received at the Long Point Region Conservation Authority Office located at 4 Elm Street, Tillsonburg Ontario, N4G 0C4, until 3 pm (EST) on Friday, July 20, 2018. Submitted proposals received after this time will be returned unopened. All submitted proposals including costs are public information and subject to the Freedom of Information and Privacy Acts. LPRCA reserves the right to cancel this RFP for any reason without any liability. Awarding of the contract based on the RFP must go before the LPRCA Board of Directors for final approval.

Questions will be received and answered until 3 pm (EST) on Friday, July 13, 2018. All questions received that may affect this RFP will be issued by addenda from the LPRCA. Every effort shall be made to complete the study by December 31st, 2018.

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