Winzler & Kelly, http://www.w-and-k.com

Oswald Geologic– John Oswald, CEG#2291, PG#7219 http://www.oswaldgeologic.com

Humboldt Redwoods Company (HRC), Kate Sullivan, Physical Sciences Manager. Ph.D, Johns Hopkins University (Geomorphology); BS, University of Idaho (Forest Science) http://www.mrc.com/

USDA, Natural Resources Conservation Service (NRCS), Arcata Soil Survey Office, http://www.ca.nrcs.usda.gov/mlra02/modir.html

Green Diamond Resource Company (GDRCo) Greg Templeton, Registered Professional Forester (RPF), Licensed Timber Operator, Calif. Licensed Foresters Association http://www.greendiamond.com/