Certificate of Completion

Peel Region

City of Mississauga

City of Mississauga

Construction of Stormwater Management Facility WM4

Date substantially performed:

2006-05-04

Date certificate signed:

2006-06-21

Name of Owner

Greater Toronto Airports Authority

Address of Owner

Lester B. Pearson International Airport - P.O. Box 6031, Tor

Name of Contractor

Dufferin Construction Company

Address of Contractor

690 Dorval Drive, Suite 200, Oakville, ON L6K 3W7

Name of Certifier

Brian R. Lackey, Vice President, Operations and Chief Engineer

Address of Certifier

Toronto Pearson International Airport - P.O. Box 6031, 3111

(1) In the City of Mississauga, Regional Municipality of Peel, in the Province of Ontario being composed of: PIN 13526-0011 (LT), PIN 13526-0001 (LT), PIN 13526-0002 (LT), PIN 13526-0003 (LT), PIN 13526-0004 (LT), PIN 13526-0005 (LT), PIN 13526-0006 (LT), PIN 13526-0007 (LT), PIN 13526-0008 (LT), PIN 13526-0009 (LT), PIN 13263-0105 (LT), PIN 13281-0038 (LT), PIN 13281-0030 (LT), PIN 13281-0026 (LT), PIN 13281-0040 (LT), PIN 13281-0048 (LT), PIN 13274-0051 (LT), PIN 13273-0369 (LT), PIN 13260-0094 (LT), PIN 13262-0034 (LT), PIN 13263-0118 (LT), PIN 13262-0014 (LT), PIN 13262-0042 (LT), PIN 13276-0119 (LT), PIN 13276-0120 (LT) (2) In the City of Toronto (formerly City of Etobicoke, in the Municipality of Metropolitan Toronto) in the Province of Ontario, being composed of: PIN 07633-0001 (LT), PIN 07633-0002 (LT), and Lots 3 and 4, Plan No. 12114(1)