The following companies were approved as Technical Assistance (TA) Providers by the State of California in 2002. The California Climate Action Registry has since become a non-profit organization that functions independently of the State; therefore, there is no approval process needed to become a Technical Assistance Provider.
The companies listed have been verified as experienced firms in providing GHG emissions services, and many of them have attended California Registry-sponsored training sessions. However, the California Registry is not responsible for any consulting services or recommendations they may provide. Also, this list is intended to serve as a starting point for members seeking additional assistance, but members are not required to use only approved TAs.
| Technical Provider | Mailing Address | Contact | 
|---|---|---|
| BVQi North America | 515 W. 5th Street Jamestown, NY 14701 | Dave Church (716) 484-9002 dave.church@us.bureauveritas.com 
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| Cameron-Cole, LLC | 50 Hegenberger Loop Oakland, CA 94621 | Chris Lawless (510) 777-1858 clawless@cameron-cole.com 
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| CH2M Hill | 402 West Broadway, Suite 1450 San Diego, CA 92101 | Clay Hinkle (619) 687-0110 Clay.Hinkle@ch2m.com 
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| Det Norske Veritas Certification, Inc. (DNV) | One Bush Street, 12th Floor San Francisco, CA 94104 | Barbara Toole O’Neil (415) 318-3913 Barbara.TooleONeil@dnv.com 
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| Eastern Research Group (ERG) | 8950 Cal Center Drive, Suite 348 Sacramento, CA 95826 | Paula Fields (916) 361-6751 paula.fields@erg.com 
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| Ecology and Environment, Inc. | 130 Battery Street, Suite 400 San Francisco, CA 94111 | H. Dru Krupinsky | 
| Econergy International Corporation | 1881 9th Street, Suite 300 Boulder, CO 80302 | Lily Russell 
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| EcoSecurities Ltd. | 435 Pacific Ave 5th Floor San Francisco, CA 94133 | Kate Thomsen | 
| E.H. Pechan & Associates | 1202 Aquila Loop Celebration, FL 34747 | Stephen Roe | 
| Energy Advantage Inc. | 5420 N. Service Rd., Suite 501 Burlington, ON L7L 6C7 Canada | Shannon Turnbull (905) 319-1717 ext. 299 shannon.turnbull@energyadvantage.com | 
| ENSR Corporation | 1220 Avenida Acaso Camarillo, CA 93012-8738 | Howard Balentine | 
| Environmental Science Associates | 225 Bush Street, Suite 1700 San Francisco, CA 94104 | Jeff Caton | 
| Environmental Software Providers (ESP) | 444 Castro Street, Suite 800 Mountain View, CA 94041 | Rebecca Morris | 
| First Environment, Inc. | 770 L Street, Suite 950 Sacramento, CA 95814 | Jay Wintergreen | 
| Futurepast, Inc. | 2111 Wilson Boulevard, Suite 700 Arlington, VA 22201 | John Shideler, PhD | 
| Heck Associates | 118 Garner Avenue Bloomfield, NJ 07003 | Werner Heck | 
| ICF International | 28202 Cabot Road, Suite 510 Laguna Niguel, CA 92677 | Scott Broten | 
| ICLEI – Local Governments for Sustainablilty | 436 14th Street, Suite 1520 Oakland, CA 94612 | Brooke Lee | 
| NSF-ISR | 789 North Dixboro Road Ann Arbor, MI USA 48105 | Petie Davis | 
| Rocky Mountain Institute / KEMA-Xenergy Team | 492 Ninth Street, Suite 220 Oakland, CA 94607 | Karin Corfee | 
| Ryerson, Master and Associates, Inc. | 735 State Street, Suite 209 Santa Barbara, CA 93101-5503 | Ivor John | 
| SAIC | 8301 Greensboro Drive MS E-5-7 McLean, VA 22102 | Michael Mondshine | 
| SBW Consulting, Inc. | 2820 Northup Way, Suite 230 Bellevue, WA 98004 | Michael Baker | 
| SCS Engineers | 3117 Fite Circle Suite 108 Sacramento, CA 95827 | Pat Sullivan | 
| Shaw Environmental, Inc. | 2360 Bering Drive San Jose, CA 95131 | Richard S. Merrill | 
| Stone & Webster Consultants | One Bowdoin Square Boston, MA 02114-2927 | Debra Richert | 
| Tetra-Tech EM Inc. | 1999 Harrison Street, Suite 500 Oakland, CA 94612 | Ed Sussenguth (510)302-6300 ed.sussenguth@ttemi.com | 
| Trinity Consultants | 15615 Alton Parkway Suite 450 Irvine, CA 92618 | Katherine N. Blue | 
| TUV America | 10040 Mesa Rim Road San Diego, CA 92121 | Derek Tremblett | 
| URS Corporation | 1615 Murray Canyon Road Suite 1000 San Diego, CA 92108 | Terri Shires |