List of Verifiers

Update: Guidelines on verification site visits in light of coronavirus precautions


The firms listed below have been accredited by the ANSI National Accreditation Board (ANAB) to conduct GHG inventory verification services for members of The Climate Registry.

ANAB’s Accreditation Committee will consider additional verification bodies for accreditation on an approximately quarterly basis.


Advanced Waste Management Systems, Inc.

6430 Hixson Pike
Hixson, TN 37343

Rob Ellis
Director, Western Region

Aster Global Environmental Solutions, Inc.

3800 Clermont Street NW
North Lawrence, Ohio 44666

Janice McMahon

Cameron-Cole, LLC

50 Hegenberger Loop
Oakland, CA 94621

Chris Lawless
Director, Greenhouse Gas Management Services

Dillon Consulting Limited

235 Yorkland Boulevard, Suite 800
Toronto, Ontario M2J 4Y8

Zachary Zehr
Project Manager & Lead Verifier
1-519-571-9833 ext.  3151

First Environment, Inc.

91 Fulton St.
Boonton, NJ 07005

Michael Carim
Environmental Specialist

GHD Limited

455 Phillip St
Waterloo, Ontario N2L 3X2

Jason Clarke
Program Manager
+1 (519) 340-4270

KPMG Performance Registrar Inc.

777 Dunsmuir Street
Vancouver, BC V7Y 1K3

Chris Ridley-Thomas
Vice President

LRQA, Inc. (formerly Ryerson, Master and Associates, Inc. (RMA))

1330 Enclave Parkway, Suite 200
Houston, TX 77077

Dave Hadlet
Business Development Advisor
866-971-LRQA (5772)

Ruby Canyon Environmental

743 Horizon Court, Ste. 385
Grand Junction, CO 81506

Michael Coté
Vice President

SCS Global Services

2000 Powell Street, Ste 600
Emeryville, CA 94608

Karen Righthand
Director of Sales and Marketing

Stantec Consulting Ltd.

130 Somerset Street
Saint John NB E2K 2X4

Vicki Corning, P.Eng.
Senior Associate, Environmental Services

How To Select A Verification Body

Members of The Climate Registry have two options for selecting a verification body:

  1. Members can select an ANAB-accredited, TCR-recognized verification body from the list provided above.
  2. Members can select a verification body that is proceeding through ANAB’s GHG Accreditation Program to become accredited to The Climate Registry’s protocols.

TCR developed a Multiple Program Matrix to assist members of The Climate Registry that are additionally reporting to the California Air Resources Board (CARB)’s Mandatory GHG Emissions Reporting Program and Low Carbon Fuel Standard. This matrix lists ANAB-accredited verification bodies and ANAB applicants eligible to perform verification services for The Climate Registry as well as CARB. The matrix also lists ANAB-accredited verification bodies that have been accredited to verify specific industry sectors.

Members should note that The Climate Registry will accept verification statements only from ANAB-accredited, TCR-recognized verification bodies. In choosing an ANAB applicant, please keep the following considerations in mind:

  • VBs must achieve accreditation against the scopes specified by ANAB in order to conduct verification work for clients that have operations in any of the following sectors:
  1. General (all organization-level reporting)
  2. Manufacturing
  3. Power Generation
  4. Electric Power Transactions
  5. Mining and Mineral Production
  6. Metals Production
  7. Chemical Production
  8. Oil and gas extraction, production and refining, including petrochemicals
  9. Waste
  10. Agriculture, Forestry and Other Land Use
  • If the verification body does not succeed in attaining accreditation within nine months of the rendering of a verification statement, the verification statement will not be accepted by TCR and the member must have their inventory re-verified by another verification body.
  • In such a case, the verification body will be liable for the costs of the verification services it provided to the member. This liability must be explicitly included as a contractual term between the applicant verification body and the member.
  • Note that a verification body cannot become accredited until it has fulfilled the requirement for a witness assessment and, therefore, it must secure at least one client for verification services prior to becoming accredited. Starting December 31, 2009, verification bodies that are ANAB applicants may enter into a contract with a TCR member only in order to fulfill ANAB witness assessment requirements, as further explained in the policy announcement issued on August 24, 2009.
  • Verification bodies are allowed one year from the time they apply to ANAB’s accreditation program to attain accreditation. As such, members should ask verification bodies when they expect to complete the accreditation process and make sure the timing is acceptable.
  • A member’s emissions report will not be made public until its verification body has been accredited.


In order to attain accreditation, these verification bodies completed a rigorous assessment process in which they demonstrated independence, impartiality and competence to successfully verify GHG emission inventories. ANAB’s assessors evaluated the verification bodies through:

  • Desktop review of the verification body’s management systems and procedures
  • Onsite assessment consisting of a visit to the verification body’s office to interview personnel and review records
  • Witness assessment consisting of observation of a verification body conducting a facility visit as part of its verification activities for a client

This assessment is completed to ensure the verification body’s compliance with requirements defined in:

  • International Standard ISO 14065:2007, Greenhouse gases – Requirements for greenhouse gas validation and verification bodies for use in accreditation or other forms of recognition
  • International Standard ISO 14064-3:2006, Greenhouse gases – Part 3: Specification with guidance for the validation and verification of greenhouse gas assertions
  • The Climate Registry’s General Verification Protocol, Version 3.0, May 2019

Currently there are no verification bodies proceeding through ANAB’s accreditation program.

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