Missed our recent Sustainability & Climate webinar, “How to Get Ahead of CA SB 253 GHG Verification?” You can now watch the full recording on GSI’s YouTube channel.
In this session, Albert Chung, PhD, PE, and Brady Koetting, CPA, discuss what companies should know as SB 253 moves from reporting preparation toward verification, assurance, and audit-ready emissions data.
The webinar covers the current state of SB 253, what to expect from the verification process, common assurance questions, supporting documentation, materiality, internal controls, site visits, and steps organizations can take now to identify gaps before assurance begins.
Please note that regulatory guidance has continued to evolve since this webinar was recorded. Since the webinar, the California Air Resources Board (CARB) announced a proposed update that would defer the initial Scope 1 and Scope 2 greenhouse gas reporting deadline from August 10, 2026, to November 10, 2026. This proposed three-month extension is intended to provide additional clarity following final approval of the regulation. The general guidance shared in this webinar on how companies can prepare remains applicable, including the importance of organizing data, confirming reporting boundaries, engaging internal stakeholders, and preparing for verification.
Watch the recording here: https://youtu.be/Wz8AVNrWd_8
Keep an eye out for more upcoming webinars from GSI as we continue sharing insights on sustainability, climate disclosure, regulatory changes, and environmental strategy.



