Pre_solicit_LD_8_Hydro-_demolition.docx

LOCK AND DAM NO. 8 WINTER MAINTENANCE

CONCRETE REMOVAL USING HYDRODEMOLITION

PRE-SOLICITATION / SCOPE OF WORK

1. General. The work shall consist of removing approximately 3,150 ft2 of unsound and delaminated vertical concrete surfaces within the lock chamber at Lock and Dam No. 8 located in Genoa, WI. The Contractor shall provide all labor, equipment, materials, and supplies necessary for this work.

a. Pre-Bid Site Visit. A pre-bid on site information meeting will be scheduled; bidders are encouraged to visit the site prior to bidding. This is the only date and time potential bidders will be allowed access to the site prior to contract award.

2. Construction Schedule. The lock structure will be dewatered and available for concrete removal beginning January 2, 2014. All demolition must be complete no later than January 31, 2014.

a. Work Hours. The contractor shall be permitted to work from Monday through Friday from 0700 to 1700, excluding Federal Holidays.

3. Water Supply. The Contractor shall supply the water required to complete the hydro demolition removal. The water shall be potable, and shall not stain, discolor, or affect exposed surfaces of the structure, or damage the environment of the project area.

4. Cold Weather Requirements. The contractor shall be aware of the weather conditions during the month of January and shall be prepared for continuing operations during freezing temperatures

5. Concrete Surface Finish. Following removal, the exposed concrete surface must be cleaned to remove all debris, slurry, or any other substance which could inhibit newly cast concrete to bond. The exposed surface must be left as dry as practical to help reduce/eliminate freezing and refreezing. Permissible cleaning methods include but are not limited to: vacuum equipment, waster jets, pressure washers and air lances.

6. Government Provided Services. The Government shall provide the following to the Contractor during the concrete removal: On-Site Setup and Storage Areas, Lock Chamber Access, Crane Service, Electrical Service, and Debris Disposal

7. Operator Experience. The high pressure equipment shall be operated by individuals with no less than 5 years of experience in the use and maintenance of this equipment.

8. Safety. All work shall be in conformance with the Corps of Engineers Safety and Health Requirements Manual EM 385-1-1 (15 September 2008 edition).

9. Site Restoration and Cleanup. The Contractor is responsible for restoring their staging/storage area to its pre-work condition. This shall include disposing of any garbage or job related debris in accordance with all state and local laws and ordinances.

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