He said points awarded for using renewable energy and energy-efficient technologies, for example, can offset deductions for development. "We do give due credit to what resorts are doing," Sykes said.

Sykes, who teaches skiing in Durango, Colo., said resorts should be held accountable for development that could level trees, harm wildlife habitat or disturb water quality.

For more information, go to www.skiareacitizens.com.

Ski Area Citizens' Coalition Top 10

1. Aspen Mountain Ski Resort, Colorado

2. Buttermilk Mountain Ski Resort, Colorado

3. Sundance Resort, Utah

4. Park City Mountain Resort, Utah

5. Squaw Valley USA, California

6. Alpine Meadows Ski Area, California

7. Aspen Highlands Ski Resort, Colorado

8. Bogus Basin Mountain Resort, Idaho

9. Mount Bachelor Ski Area, Oregon

10. Telluride Ski Resort, Colorado

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Contributing: Deseret News staff