Item No.         7c supp.
Date of Meeting   May 5, 2009

Carbon Footprint Study for
the Asia to North America
Intermodal Trade

Overview
Concern about greenhouse gas impacts
First assessment to evaluate the carbon
impacts of the transportation supply chain
from origin to destination
Conducted by Herbert Engineering

Methodology
Analysis determined tons carbon dioxide equivalent per
TEU from Asia to points in U.S. mainland
Vessel sizes: 4,500 to 12,500 TEU
Asian Origin Ports:
Shanghai, Hong Kong, Singapore
North American Ports:
Prince Rupert, Seattle, Los Angeles/Long Beach, Houston,
Savannah, Norfolk, New York/New Jersey
North American Destination Cities:
Chicago, Columbus, Memphis

Methodology
Routings:
West Coast ports and intermodal trains to destination
cities
All-water via Panama Canal to Gulf and East Coast
Cities
All-water via Suez Canal to Gulf and East Coast
Cities
Independent review:
University of Washington
Seattle Climate Partnership
Industry (3PLs, shippers, carriers, railroads)

Results
The Pacific Northwest gateway offers the
lowest carbon footprint to 180,000,000
consumers in the northern half of the
United States
The West Coast ports collectively offer a
lower carbon footprint throughout the
entire continental United States

Implications
The West Coast ports are the most energy-
efficient gateways from Asia to U.S. consumers
The Pacific Northwest ports have a slightly lower
carbon footprint from Asia than any other port in
North America
This study adds data to the emerging field of
carbon footprint assessments of supply chains
Results can give us a competitive edge

Committed to Reducing
our Footprint
Puget Sound Maritime Air Emissions Inventory
Most comprehensive maritime inventory to date; first to include
greenhouse gases
Northwest Ports Clean Air Strategy
Groundbreaking effort of the Ports of Seattle, Tacoma, and
Vancouver (B.C.) to reduce emissions from maritime operations
Vessels
Shore power for Holland America Line and Princess Cruises
At-Berth Clean Fuels Vessel Incentive Program
Required use of 1.5% (or less) sulfur fuels for cruise vessels
Cargo-Handling Equipment
Exhaust retrofits and cleaner fuels for cargo-handling equipment
Trucks
Recent Commission approval of the Port's Clean
Truck Program