Below is a veritable wealth of information about everything related to the proposed port--and more. Please take the time to peruse the links and learn as much as you can handle.
Information is power

Key Environmental and Watchdog Groups

North Carolina Coastal Federation
North Carolina Coastal Land Trust
North Carolina Conservation Network
Cape Fear Arch
Stop Titan Cement
Cape Fear Audubon Society
Southern Environmental Law Center
Cape Fear River Watch
The Nature Conservancy
State The Issues - a local watchdog site on government corruption
Bluewater Network
National Resources Defense Council (NRDC)
NRDC › David Pettit's Blog
Conservation Council of North Carolina
NC Beach, Inlet & Waterway Association
Cape Fear Resource Conservation and Development
Conservation Council of N.C. Political Action Committee
Transportation Research Board
Brunswick County Transportation Plan
Brunswick County Land Use Plan

Local & State Government Agencies
NC Coastal Resources Commission
NC Division of Coastal Management
N.C. Department of the Environment and Natural Resources (DENR)
NC Division of Marine Fisheries
NC Wildlife Resources Commission
N.C. Division of Water Quality
N.C. Office of Environmental Education
CAMA (Coastal Area Management Act)
N.C. Environmental Management Commission
CAMA Handbook for Development in Coastal North Carolina
Wilmington Harbor Project, Army Corps of Engineers
N.C. General Statutes - Stormwater
N.C. General Statutes - Wetlands
North Carolina State Ports Authority (NCSPA)

US Government Agencies
U.S. Environmental Portection Agency (EPA)
U.S. Army Corps of Engineers
Wilmington Harbor Project, Army Corps of Engineers
US EPA Oceangoing Vessels
U.S EPA - Locomotives, Nonroad Engines, Equipment and Vessels
Clean Ports USA  National Clean Diesel Campaign
U.S. Coast Guard Environmental Standards
U.S. Fish & Wildlife Service
National Oceanic & Atmospheric  Administration (NOAA)
National Marine Fisheries Service - Southeast Region (NOAA)
Federal Maritime Commission
U.S. Department of Transportation, FTA - Planning & Environment
U.S.Department of Homeland Security
U.S. Maritime Administration
U.S. Department of Commerce

U.S. Congress
U.S.Senate Committee on Environment  and Public Works
Congress.org - contact your elected officials
Govtrack - Tracking the U.S. Congress, Locate & Follow Legislation
HR 802 Maritime Pollution Prevention Act information

Environmental Articles & Related Groups
The Air Zone Blog
Harboring Pollution - NRDC
Earth Trends, Environmental Information
OnEarth-The Dark Side of the New Economy
Trade, Health & Environment Impact Project
Coalition To Close MRGO (Louisiana, Hurricane Katrina)
NewScientist-Coverage of MRGO & Katrina
McKnight Foundation-Gulf Storm Disaster Evaluation
Oceangoing Ships: The Last Bastion of  Dirty Diesels
ScienceDirect: Pollution Prevention at Ports
Shipping Emissions Abatement & Training
Light Pollution

Invasive Species
National Ballast Water Information and Enforcement (USCG)
Aquatic Nuisance Task Force
Smithsonian Environmental Research Lab: Marine Invasive Species
U.S. Coast Guard Aquatic Nuisance Species
U.S. Geologic Survey List of Non-Native Species From Shipping
Aquatic Nuisance Species Research Program (US Army Corps of Engineers) 
National Exotic Marine and Estuarine Species Information System (Nemesis)
Invasives.org - The source for information and images of invasive and non-native species

Other East Coast Ports
APM Terminal, Portsmouth, VA
Port of Charleston
Contain The Port, Charleston, SC
Coastal Conservation League-Human Health & Environment in SC
Coastal Conservation League-Port Operations in Charleston, SC
Coastal Conservation League-Port Pollution Solutions Charleston
Charleston Air Pollution-American Lung Association
Charleston Ports Environmental Impact Study (EIS)
Georgia Ports Authority
Port of Fernandina, FL problems

Security and Safety (see government agencies also)
Global Security.org - Reliable Security Information
Cargo Systems-Key Intelligence for the Port & Cargo Industries

Shipping Trade Organizations & Publications
International Maritime Organization (IMO)
World Maritime News
MARPOL-International Convention for the Prevention of Pollution From Ships
World Port Source-US Ports
World Shipping Council
American Association of Port Authorities (AAPA)Port Strategy
Port Technology International
Port Technology
Sustainable Shipping Library