| Name Organization | Address City, State Zip | Phone Mobile Phone | |
|---|---|---|---|
| Gary Carpenter | 2481 Kilkare Rd. Sunol, CA 94586 | (925) 862-2978 | |
| Terry Carpenter Wylaco Supply Company | 315 Vallejo Street Denver, CO 80223-1013 | (303) 778-8201 | |
| Ed Carswell McCrossin Foundations, LLC | 770 Newtown Yardley Road, Suite 212 Newtown, PA 18940 | (484) 851-3901 | |
| Glen Carte Foundation Specialties, Inc. | P.O. Box 505 Lowell, AR 73745-0505 | (479) 263-2963 | |
| Jim Casavant American Piledriving Equipment, Inc. | Southeast Regional Office, 1345 Industrial Park Road Mulberry, FL 33860 | (863) 324-0378 | |
| Donald Cassier SEECO Consultants, Inc. | 7350 Duvan Drive Tinley Park, IL 60477-3713 | (708) 429-1666 | |
| Jorge Castaneda PLI Systems, Inc. | 3045 S. E. 61st Court Hillsboro, OR 97123 | (503) 649-8111 | |
| Manuel Castaneda PLI Systems, Inc. | 3045 S. E. 61st Court Hillsboro, OR 97123 | (503) 649-8111 | |
| Mauricio Castano International Drilling Equipment, Inc. | 645 Angus Street Rural Hall, NC 27045 | (877) 207-6062 | |
| Raymond Castelli P.E. WSP USA | One Penn Plaza, Floor 2 New York, NY 10119 | (212) 465-5212 | |
| Linda Castillo Hennessy International, Inc. | 1623 Mission Drive, Unit 14 Solvang, CA 93463 | (805) 693-8880 | |
| David Cefali Cefali & Associates, Inc. | 4344 Laurel Canyon Blvd., #3 Studio City, CA 91604-1772 | (818) 752-1812, Ext. 301 | |
| Tim Cellar Drillers' Choice, Inc. | 1847 Candy Lane, Suite B Marietta, GA 30008 | (401) 694-1283 | |
| Amy Cerato Ph.D., P.E. University of Oklahoma | 202 West Boyd St Room 334 Norman, OK 73019 | (405) 325-5625 | |
| Chuck Chamley GEOKON, Inc. | 48 Spencer Street Lebanon, NH 3766 | (603) 448-1562 | |
| George Chaney Pengo Corporation | 500 E. Hwy 10 Laurens, IA 50554 | ||
| Andrew Chapin Conner Gwyn Schenck, PLLC | P. O. Box 20744 Greensboro, NC 27420 | 336-691-9222 | |
| Teresa Chapman Morrison Engineers, PLLC | 7701 Chapel Hill Road Cary, NC 27513 | (919) 851-2021 | |
| Luc Charland GeoRocFor inc. | 165 Joseph-Robertson Sherbrooke, QC J1L 2W7 | 819-569-4207 | |
| Adam Chavez Mutual Drilling Co. Inc. | 2201 Isleta Boulevard South West Albuquerque, NM 87105 | (505) 877-0520 | |
| Johnny Chavez Mutual Drilling Co. Inc. | 2201 Isleta Boulevard South West Albuquerque, NM 87105 | (505) 877-0520 | |
| Mariscela Chavez Mutual Drilling Co. Inc. | 2201 Isleta Boulevard South West Albuquerque, NM 87105 | (505) 877-0520 | |
| John Chen Geolabs, Inc. | 2006 Kalihi Street Honolulu, HI 96819-3647 | (808) 841-5064 | |
| William Cheng AGL Manufacturing Ltd. | 8378 Prince Edward Street Vancouver, BC V5X 3R9 | (604) 267-1716 | |
| Les Chernauskas P.E. Geosciences Testing and Research, Inc. | 55 Middlesex Street, Suite 225 North Chelmsford, MA 1863 | (978) 251-9395 |
|