AP
This image released by LEA-Architects, LLC., shows the inside of a terminal proposed for an airport just outside Grand Canyon National Park. The Arizona Department of Transportation said a bigger terminal that could accommodate commercial flights would bring more tourists to the canyon.
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updated 11/2/2011 10:49:34 AM ET 2011-11-02T14:49:34

A proposal to build a much larger terminal at Grand Canyon National Park Airport would allow for commercial passenger flights to the area and could boost the number of visitors to the airport to as many as 1 million each year, an Arizona transportation official said Tuesday.

The airport logged more than 318,000 passengers in 2010, and almost all of that traffic was related to aerial tours of the canyon on smaller aircraft. In 2008, air tours made up 95 percent of the airport's operations, according to a study on terminal plans.

Building a bigger terminal would meet security and baggage requirements for commercial airlines, said Laura Douglas, a state Department of Transportation spokeswoman.

"This will allow people to book their own tours, their own packages and get to the airport a lot more frequently and see one of Arizona's biggest draws," she said.

Visitors from across the country typically take ground transportation into the park or fly into Las Vegas-area airports before boarding smaller planes to the Grand Canyon airport. But the Department of Transportation wants to bring in flights from other major hubs, such as Denver, she said.

Expanding the existing 8,850 square-foot terminal, located just south of the national park, would cost $10 million and could take five years. The project would be paid for with a mix of state, federal and private funding, though the Federal Aviation Administration said the airport has yet to apply for any federal grants.

The airport has been a money-losing operation for the state in recent years. The Transportation Department brings in between $900,000 and $1 million annually but spends up to $1.5 million. Recently approved increases in landing, gate and parking fees are expected to raise $250,000 a year but that won't cover the deficit.

Restaurants, hotels and other commercial development not directly tied to aviation could come through public and private partnerships, Douglas said.

The timeframe for the terminal aligns with a major development plan proposed in the nearby town of Tusayan that would create 3 million square-feet of commercial space and hundreds of new homes. But the Transportation Department said the projects are unrelated, though few doubt they would not be mutually beneficial.

Park officials said they're concerned a new terminal would mean more noise at a time when they're trying to manage the number of flights over the park and make the environment quieter.

Story: Park officials want fewer Grand Canyon flights

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Visitation to the park has remained relatively flat at 4.5 million annually, but parking shuttles from Tusayan are routinely crowded, and the parks' facilities are overwhelmed, park Superintendent Dave Uberuaga said.

"I haven't seen any actions that would indicate a sensitivity for what is too much," he said.

Douglas said the department is looking at the environmental impacts of expanding the airport.

LEA-Architects, LLC, which is designing the terminal, said it would incorporate sustainable aspects, such as solar power, water harvesting, low-flow plumbing and recycled materials.

Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Photos: America's national parks

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  1. Acadia

    Acadia National Park in Maine boasts the highest mountain on the U.S. Atlantic Coast and was the first national park east of the Mississippi River. Visitors beware: temperatures can vary 40 degrees -- from 45 degrees to 85 degrees in the summer and from 30 degrees to 70 degrees in the spring and fall. (Gareth Mccormack / Lonely Planet Images) Back to slideshow navigation
  2. Rocky Mountain

    Bear Lake, with mountainside aspens changing colors in mid-autumn, is one of the popular attractions in Rocky Mountain National Park in Colorado. (Universal Images Group via Getty Images) Back to slideshow navigation
  3. Badlands

    The climate in South Dakota's Badlands National Park is extreme. Temperatures range from minus 40 degrees in the dead of winter to 116 degrees in the height of summer. Visitors are drawn to the park's rugged beauty as well as the area's rich fossil beds. (Mark Newman / Lonely Planet Images) Back to slideshow navigation
  4. Yosemite

    One of the nation's first wilderness parks, Yosemite is known for its waterfalls, scenic valleys, meadows and giant sequoias. (Robert Galbraith / Reuters) Back to slideshow navigation
  5. North Cascades National Park

    The North Cascades National Park complex offers something for everyone: Monstrous peaks, deep valleys, hundreds of glaciers and phenominal waterfalls. The complex includes the park, Ross Lake and Lake Chelan National Recreation Areas. (David Mcnew / Getty Images) Back to slideshow navigation
  6. Zion

    This spectacular corner of southern Utah is a masterpiece of towering cliffs, deep red canyons, mesas, buttes and massive monoliths. (Mark Ralston / AFP - Getty Images) Back to slideshow navigation
  7. Redwood

    Created in 1968, Redwood National Park is located in Northern California. Today, visitors to the national park can enjoy the massive trees as well as an array of wildlife. (David Gotisha / msnbc.com) Back to slideshow navigation
  8. Joshua Tree

    Joshua Tree National Park is located in southeast California. The area was made a national monument in 1936 and a national park in 1994. Outdoor enthusiasts can go hiking, mountain biking and rock climbing. (Gabriel Bouys / AFP - Getty Images) Back to slideshow navigation
  9. Great Smoky Mountains

    Straddling the Tennessee-North Carolina border, Great Smoky Mountains National Park encompasses more than 800 square miles in the southern Appalachian Mountains. Visitors can expect mild winters and hot, humid summers, though temperatures can differ drastically as the park's elevation ranges from 800 feet to more than 6,600 feet. (AP) Back to slideshow navigation
  10. Arches

    More than 2,000 natural sandstone arches, many of them recognizable worldwide, are preserved in Utah's Arches National Park. Temperatures can reach triple digits in the summer and can drop to below freezing in the winter. (AP) Back to slideshow navigation
  11. Grand Teton

    The Snake River flows through Grand Teton National Park, and the jagged Teton Range rises above the sage-covered valley floor. Daytime temperatures during summer months are frequently in the 70s and 80s, and afternoon thunderstorms are common. (Anthony P. Bolante / Reuters) Back to slideshow navigation
  12. Haleakala

    Visitors watch the sun rise at 10,000 feet in Haleakala National Park in Maui, Hawaii. If weather permits, visitors at the top of the mountain can see three other Hawaiian islands. (The Washington Post via Getty Images) Back to slideshow navigation
  13. Grand Canyon

    Grand Canyon National Park is perhaps the most recognizable national park. Nearly 5 million visitors view the mile-deep gorge every year, formed in part by erosion from the Colorado River. The North and South rims are separated by a 10-mile-wide canyon. (Gabriel Bouys / AFP - Getty Images) Back to slideshow navigation
  14. Yellowstone

    Yellowstone National Park, America's first national park, was established in 1872. The park spans parts of Wyoming, Montana and Idaho. Grizzly bears, wolves, bison and elk live in the park. It is well known for Old Faithful and other geothermal features. (Mark Ralston / AFP - Getty Images) Back to slideshow navigation
  15. Mount Rainier

    Glaciers. Rainforests. Hiking trails. Mount Rainier National Park, located in Washington state, offers incredible scenery and a diverse ecology. The park aims to be carbon neutral by 2016. (National Park Service) Back to slideshow navigation
  16. Hawaii Volcanoes

    Two of the world's most active volcanoes can be found within Hawaii Volcanoes National Park. In 1980, the national park was designated an International Biosphere Reserve; in 1987, it was added as a World Heritage Site. (David Jordan / AP) Back to slideshow navigation
  17. Everglades

    Everglades National Park covers the nation's largest subtropical wilderness. It is also a World Heritage Site, an International Biosphere Reserve and a Wetland of International Importance. Visitors to the park can camp, boat, hike and find many other ways to enjoy the outdoors. (Joe Raedle / Getty Images) Back to slideshow navigation
  18. Glacier

    A view from atop the Grinnell Glacier Overlook trail in Glacier National Park. With more than 700 miles of trails the park is known for its glaciers, forests, alpine meadows and beautiful lakes. (Matt McKnight / Reuters) Back to slideshow navigation
  19. Bryce Canyon

    Located in southwestern Utah, Bryce Canyon National Park is known for its distinctive geological structures called "hoodoos." (Mark Ralston / AFP - Getty Images) Back to slideshow navigation
  20. Crater Lake

    The brilliant blue Crater Lake, located in southern Oregon, was formed when Mount Mazama, standing at 12,000 feet, collapsed 7,700 years ago after a massive eruption. Crater Lake is one of the world's deepest lakes at 1,943 feet. (David Gotisha / msnbc.com) Back to slideshow navigation
  21. Olympic

    Washington state's Olympic National Park offers visitors beaches on the Pacific Ocean, glacier-capped mountain peaks and everything in between. Keep the weather in mind when visiting, though, as roads and facilities can be affected by wind, rain and snow any time of year. (National Park Service) Back to slideshow navigation
  22. Sequoia and Kings Canyon

    A woman stands among a grove of a Giant Sequoia trees in Sequoia National Park in Central California. The trees, which are native to California's Sierra Nevada Mountains, are the world's largest by volume, reaching heights of 275 feet and a ground level girth of 109 feet. The oldest known Giant Sequoia based on its ring count is 3,500 years old. (Mark Ralston / AFP - Getty Images) Back to slideshow navigation
  23. Denali

    Alaska's Denali National Park spans 6 million acres and includes the 20,320-foot Mount McKinley, North America's tallest peak. Many park visitors try to catch a glimpse of the "big five" -- moose, caribou, Dall sheep, wolves and grizzly bear. (National Park Service) Back to slideshow navigation
  24. Kenai Fjords National Park

    The National Park Service considers the 8.2-mile round-trip on Harding Icefield Trail in Alaska's Kenai Fjords National Park to be strenuous, saying hikers gain about 1,000 feet of elevation with each mile. (National Park Service via AP) Back to slideshow navigation
  25. Death Valley

    California's Death Valley encompasses more than 3.3 million acres of desert wilderness. In 1849, a group of gold rush pioneers entered the Valley, thinking it was a shortcut to California. After barely surviving the trek across the area, they named the spot "Death Valley." In the 1880s, native peoples were pushed out by mining companies who sought the riches of gold, silver, and borax. (Gabriel Bouys / AFP - Getty Images) Back to slideshow navigation
  26. Wind Cave

    Bison graze in Wind Cave National Park in the southern Black Hills of South Dakota. Millions of bison were slaughtered by white hunters who pushed them to near-extinction by the late 1800s. Recovery programs have brought the bison numbers up to nearly 250,000. (David McNew / Getty Images) Back to slideshow navigation
  27. Canyonlands

    The Lower Basins Zone is outlined by the white rim edge as seen from the White Rim Trail in Canyonlands National Park, Utah. (Doug Pensinger / Getty Images) Back to slideshow navigation
  28. Shenandoah

    Fall colors blanket the Shenandoah National Park, drawing tourists to Skyline Drive to view the scenery. (Karen Bleier / AFP - Getty Images) Back to slideshow navigation
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  1. Gareth Mccormack / Lonely Planet Images
    Above: Slideshow (28) America's national parks
  2. Image:
    Stephen Saks / Lonely Planet Images
    Slideshow (18) America’s lesser-known national parks

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