Double Word Score (KPC2010) Mystery Cache

Two years ago, Stefan Fatsis (author of Word Freak) sent me a list of 549 words from The Official Scrabble Players Dictionary which met three criteria he chose. Here are fifteen of those words.

Special Notes about the 2010 Puzzle Challenge: To be considered for Fastest Solver points, you must verify your solution with certitude. Because certitude may not properly account for joint solutions, please email me team member names in the case of team solutions to ensure proper point accounting. All "point" scoring is arbitrary anyway, subject to change, at the discretion of the cache owner, and probably completely meaningless (unless you just want your name announced earlier at the December banquet). The real challenge is just to see whether you can solve all of these caches by the end of the year. To maintain fairness, hints should not be offered by the cache owner or other solvers until the fifteenth of the month.

Special Notes about this month's puzzle:
I'm trying something new this month because I'm going to be out of town on the 1st. We'll see whether it works (and whether I get away with it). I also need to apologize for the lame hide. I wanted to hide this cache somewhere closer to jimbexleyspeed because he was the first to solve last month's puzzle. But, I waited until the last minute to start looking for a hiding spot, and I kind of ran out of time and just decided to plunk this one here.

2010 Puzzle Challenge Solvers
2010 Puzzle Challenge Finders

You can validate your puzzle solution with certitude.