Certificate of Completion

This is to certify that the contract for the following impro

To the above premises was substantially performed on: May 13, 2011

To the above premises was substantially performed on: May 13, 2011

Construction of Bridge Substructures at the following locations: Location 1 Barnum House Creek - Mile 258.20 Kingston Subdivision Location 2 Coverts Creek Mile 261.10 Kingston Subdivision Location 3 Brook Creek Mile 263.20 Kingston Subdivision

Date substantially performed:

2011-05-13

Date certificate signed:

2011-05-13

Name of Owner

Canadian National Railways

Address of Owner

4 Welding Way off 1 Administration Road, Concord, ON L4K 1B9

Name of Contractor

Concreate USL Limited Partnership

Address of Contractor

2 Manchester Court, Bolton, ON L7E 2J3

Name of Certifier

Canadian National Railway

Address of Certifier

as owner

Canadian National Railway, 4 Welding Way off 1 Administration Road, Concord, ON L4K 1B9 Attention