Our Services

SAS draws on decades of experience to provide tailor-made sustainability assurance services for corporations, certification bodies, and assessment frameworks.

Sustainability Disclosures and Scope 1, 2, 3 GHG Emissions Verification

SAS team members have expertise in analyzing sustainability data, including greenhouse gas (GHG) emissions, and offer professional and approachable verification services that meet a wide range of requirements.

DID YOU KNOW?

One engagement can meet multiple needs (e.g. GHG verification for CDP, EcoVadis, CA 253, and GRI).

AA1000

SAS is an AA1000 Licensed Provider, providing third-party assurance to the AA1000 Series of Standards. We assess your report’s adherence to the AA1000 Principles of Inclusivity, Materiality, Responsiveness, and Impact, ensuring information is accurate, balanced, and relevant to stakeholders. By applying a systematic, evidence-based approach, we enhance the credibility of your reporting, build stakeholder trust, and identify opportunities to strengthen your sustainability management and performance.

GHG Emissions Verification for California Climate Regulations

CA SB 253 mandates limited assurance for the reporting of 2025 greenhouse gas emissions in 2026. We recommend that organizations initiate the assurance process now for their 2024 emissions to proactively identify and resolve any potential issues within the 2025 inventory.

GHG Verification and Assurance for CDP

SAS is a CDP Verification Accredited Solutions Provider, providing companies with verification and assurance of climate and sustainability data. We support with:

• GHG inventory verification (e.g. CDP question 7.9),
• Water accounting verification (e.g. CDP question 9.3.2),
• Sustainability Report Assurance (e.g. CDP question 13.1), and/or
• Other non-financial data assurance.

GHG Verification and/or Report Assurance for EcoVadis

SAS provides companies with verification and assurance of climate and sustainability data, providing independent verification using globally recognized standards like ISO 14064 or other accepted standards to fit your verification needs.

We support with:

• GHG inventory verification (EcoVadis question GEN600 and CAR134)
• Sustainability Report Assurance (EcoVadis questions GEN600) and/or
• GHG emissions verification (EcoVadis question GEN600 and CAR134)

GHG Verification and Assurance for Microsoft Suppliers 

We provide verification and assurance to total and service-level Scope 1, 2, and 3 categories 1-8 to meet Microsoft’s Procurement Sustainability Assurance Guidelines. 

Environmental Data Verification and/or Report Assurance for GRESB

We support with verification and assurance for energy, GHG emissions, water, and waste performance data reported to GRESB in EN1, GH1, WT1, and WS1, and the selection of ‘externally assured’ completed for GRESB’s MR1, MR2, MR3, and MR4 indicators.

Assessment Support 

SAS supports certification bodies and assessment frameworks to develop new and improve existing standards and validation processes. 

Expert Guidance

SAS provides tailored recommendations for the development and refinement of industry standards, supporting organizations in adapting to evolving sustainability challenges. By collaborating with certification bodies and assessment frameworks, SAS identifies areas where existing standards and guidance documents can be improved, ensuring they remain relevant and robust in the face of new environmental expectations and regulatory requirements.