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GHG Verification and Validation Services (VVB)

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Greenhouse Gas (Carbon Footprint) Verification

Third-party verification of greenhouse gas emissions is rapidly moving from voluntary best practice to mandatory requirement:

  • SEC Climate Disclosure Rules: Proposed requirements for public companies to disclose Scope 1, 2, and material Scope 3 emissions with independent assurance
  • California SB 253: Climate Corporate Data Accountability Act requiring GHG emissions reporting and verification for large companies operating in California
  • EU Corporate Sustainability Reporting Directive (CSRD): Mandatory sustainability reporting with assurance requirements for companies operating in European markets
  • Federal Supplier Requirements: GSA and government contracts increasingly requiring verified emissions data
  • Supply Chain Mandates: Major retailers and corporate customers demanding verified carbon footprints from suppliers

Beyond compliance, independent verification:

  • Identifies cost-saving opportunities through improved data management
  • Strengthens internal GHG accounting processes and controls
  • Enhances credibility with investors and sustainability rating agencies
  • Supports competitive differentiation in sustainability assessments
  • Reduces greenwashing risk and reputational exposure

Why GHG Verification Matters Now: Growing Regulatory and Market Demands

Independent third-party verification of your GHG emissions data ensures stakeholder confidence, regulatory compliance, and credible climate reporting. As regulatory requirements intensify—from SEC climate disclosure rules to California SB 253 and the EU’s CSRD—verified GHG accounting is becoming essential for managing climate-related risks, meeting investor expectations, and demonstrating genuine progress toward NetZero commitments.

At AmSpec, we operate as an accredited Verification and Validation Body (VVB) to provide independent, impartial, and technically sound services based on international standards. Our goal is to ensure the integrity and transparency of greenhouse gas (GHG) statements and other climate-related data.

GHG Verification and Validation Services

We provide independent third-party verification and validation across the full spectrum of climate-related assertions:

Organizational GHG Inventory Verification

Verify your Scope 1, 2, and 3 emissions to meet reporting requirements for CDP, TCFD, GRI, and regulatory programs. Our verification services provide stakeholders with confidence that your disclosed emissions data is accurate, complete, and free from material misstatement.

We verify inventories for:

  • Annual corporate sustainability reports and climate disclosures
  • CDP (Climate Disclosure Project) submissions requiring reasonable assurance
  • Regulatory compliance reporting (CARB, EPA, state programs)
  • Science-Based Targets initiative (SBTi) progress tracking
  • Voluntary disclosure frameworks (TCFD, GRI, SASB)

GHG Mitigation Project Validation and Verification

Validate project design and verify emission reductions for carbon offset projects and emission reduction initiatives. Our services support projects across renewable fuels, clean energy, chemicals, construction materials, and the AFOLU sector (Agriculture, Forestry, and Other Land Use).

We support projects under:

  • Climate Action Reserve (CAR)
  • Verra (VCS, CCB Standards)
  • Gold Standard
  • American Carbon Registry
  • Low Carbon Fuel Standard (LCFS) and Clean Fuel Standard (CFS) programs

Product Carbon Footprint Verification

Verify life cycle greenhouse gas assessments and Environmental Product Declarations (EPDs) to substantiate product-level carbon claims and meet customer requirements for supply chain emissions data.

Our verification covers:

  • Product Category Rules (PCRs) under EPD programs
  • ISO 14067 carbon footprint studies
  • Cradle-to-gate and cradle-to-grave assessments
  • Product-specific Scope 3 emissions calculations
Start Your Journey
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Our Verification Process

Review your GHG inventory boundaries, reporting period, and applicable standards; assess materiality thresholds

Desk audit of emission calculations, data sources, and supporting documentation

On-site or remote assessment of data management systems, operational practices, and key emission sources

Identify discrepancies or gaps; work collaboratively to address findings

Independent technical reviewer validates verification work

Issue final verification statement with assurance level (limited or reasonable)

Submit verification opinion to applicable GHG programs (CDP, TCR, regulatory bodies)

Auditor uses clipboard to complete on-site checklist.
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Why Choose AmSpec

Our technical team brings more than 210 years of combined experience in MRV and GHG accounting, supported by multidisciplinary expertise spanning regulatory compliance, engineering, environmental science, and carbon accounting.

AmSpec is accredited by ANSI National Accreditation Board (ANAB) and EMA as a Verification and Validation Body (VVB) under ISO 14065, with accreditation scope covering organizational GHG inventories, mitigation projects, and product carbon footprints.

We apply a risk-based approach and robust methodologies to ensure:

  • Impartiality and confidentiality in every assessment
  • Compliance with ISO/IEC 17029 and ISO 14065 requirements
  • Auditable processes aligned with international best practices
  • On-site and remote technical evaluations adapted to each client and project

We maintain continuous improvement processes and stay current with evolving standards, ensuring our verification services meet the highest professional standards in the industry.

Our services are designed for:

  • Carbon project developers seeking validation and verification for offset registry approval
  • Companies with Science-Based Targets, NetZero commitments, and emission reduction goals
  • Public companies preparing for SEC climate disclosure requirements
  • Organizations reporting to CDP, TCFD, GRI, SASB, and other disclosure frameworks
  • Supply chain participants meeting customer requirements for verified emissions data
  • Consulting firms and associations requiring a reliable accredited VVB par
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TALK TO AN EXPERT TODAY

Navigating GHG standards and verification programs can be complex, but you don’t have to do it alone. Our accredited VVB team partners with organizations to provide impartial reviews and practical guidance grounded in international best practices. Complete the form below and we’ll reach out to help you chart the right path for your project.

Frequently Asked Questions

Validation is the process of evaluating whether a proposed GHG project or methodology is designed appropriately and likely to achieve claimed emission reductions. Verification is the process of evaluating whether a GHG assertion (such as an emissions inventory or project emission reductions) is accurate and complete after implementation. Validation happens before a project begins; verification happens after data has been collected.

Limited assurance (sometimes called moderate assurance) provides a lower level of assurance expressed in negative form: “nothing has come to our attention that causes us to believe the GHG statement contains material misstatements.” Reasonable assurance (sometimes called high assurance) provides a higher level of assurance expressed in positive form: “the GHG statement is free from material misstatement.” Reasonable assurance requires more extensive verification procedures and evidence gathering.

Most organizational inventory verifications take 4-8 weeks from initiation to final opinion statement, depending on the scope, complexity, and data readiness. Project validations and verifications can take longer depending on project complexity, site access requirements, and the specific program requirements. We work with you to establish a timeline that meets your reporting deadlines.

Typical documentation includes: your GHG inventory report or project documentation, organizational chart showing reporting boundaries, emission calculation spreadsheets or software outputs, supporting evidence for activity data (utility bills, fuel receipts, production records), emission factor sources and references, uncertainty assessments, and quality control procedures. We provide a detailed information request during the scoping phase.

To maintain independence and impartiality, we do not provide consulting services and verification services for the same GHG assertion. However, we can refer you to qualified GHG consultants if you need support developing your inventory or project documentation before seeking verification.

AmSpec is accredited by ANAB as a verification and validation body under ISO 14065. Our accreditation scope covers organizational GHG inventories, GHG mitigation projects, and product carbon footprints across multiple sectors. Contact us to confirm our accreditation covers your specific program or sector requirements.

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