Many of the errors were punctuation problems. There were disagreement problems, dangling modifiers and usage problems. Changes are in bold.
1. Casper Doe, a freshman who grew up in Newport, Oregon, described himself as "the friendly ghost from the coast."
3. The crash killed the pilot, George Causey of the Seattle
area, and his only passenger, Ed Tulleners.
4. Causey and Tulleners were flying to a trade show in Las Vegas,
Nevada, in the single-engine helicopter.
5. She said, "Many people think football is like life; I
think of it as just a game."
7. "It's great that we have one day a year set aside to
celebrate the environment, but every day should be Earth
Day," Smith said.
8. The architect purchased the property 30 years ago because he
feared that industrial development would adversely affect
the Columbia River Gorge.
9. Jannelle Doe was a big-city girl from Portland; now she
calls a sorority near campus her home.
10. Although its strategy remains the same, Greenpeace has
evolved over the years.
12. Robert Z. Melnick, interim dean of the School of Architecture
and Allied Arts and professor of landscape architecture,
said, "The high aesthetic quality of John Yeon's design
work deserves wider public recognition and academic acclaim."
13. It's only a matter of time before someone writes a
biography of former Olympic figure skater Tonya Harding.
14. The retirement of Sam Nunn, the most prominent of a dwindling
breed of conservative Southern Democrats, will leave a hole in the
Democratic Party. (dangling modifier--rewrite)
15. "I don't think it's trashy one bit; I think it looks cute," she
said. (Correct)
17. While Eugene's only shoe manufacturing plant burned, two
firefighters collapsed because of the heat.
18. The University was granted permission to use its duck as
a mascot many years ago. The figure was patterned after a cartoon
character designed by Walt Disney himself. (dangling modifier--
rewrite)
19. "If you think you see a light at the end of the tunnel,
it's probably a mirror," Russial said.