Case study

Optima KV Carbon Verification -Case Study


The anaerobic digestion of manure within lagoons releases methane gas, which is a greenhouse gas 25x more potent than CO2. The project developer has utilized anaerobic digestion and biogas collection systems to reduce emissions and make a renewable fuel, while also improving the quality of life for those living near the farms.

This system is more complex than usual due to the number of digester cells and the level of biogas conditioning that must occur before the biomethane is injected into a pipeline. The project developer made a large financial investment in this project and is using carbon offsets to recoup some of the investment.

Optima KV, LLC needed a third party Verification Body certified under the California Air Resources Board (CARB) Compliance Offsets Livestock Protocol for Carbon Offset Credits.

Problem Continued


Hal Langenbach and his team was able to ensure Optima KV, LLC compliance with California Air Resources Board rules and regulation because AWT is credentialed under California Air Resources Board Protocol for Carbon Offset Credits.

Hal’s unique team of agricultural engineers allows for efficient verification due to their background knowledge of farm operations, allowing them to meet ambitious deadlines set within the verification plan. AWT follows standard verification services including a desk review of all relevant data, a site audit to review monitoring & destruction equipment, and a final verification statement/ report.

“AWT was great to work with throughout the process. Having deep experience verifying Ag-based projects, they easily knew their way around the information making the process quick and efficient. I cannot recommend AWT for verification services enough.”

Mark M., Project Developer


AWT is accredited as a verification body by the California Air Resources Board (Executive Order H2-19-012) for livestock and mine methane projects.