1. a Air Force Civil Engineer Center (AFCEC), Department of the U.S. Air Force , Lackland AFB , TX , USA
2. b National Center for Environmental Assessment (NCEA), U.S. Environmental Protection Agency , Cincinnati , OH , USA
3. c Superfund Division, Region 10, U.S. Environmental Protection Agency , Seattle , WA , USA
4. d Arcadia U.S., Inc. , Lakewood , CO , USA