> For the complete documentation index, see [llms.txt](https://aetlas.gitbook.io/aetlas/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aetlas.gitbook.io/aetlas/for-project-developers/references-and-other-guidance/additional-principles-for-biomass-based-projects/specific-to-biochar-projects.md). # Specific to Biochar Projects ### Biochar Project Developers Must * Verify that biochar is not used for combustion applications or other applications that would lead to rapid release of CO2 to the atmosphere. * Provide biochar elemental analysis (C, H, O) to substantiate storage durability and account for biochar recalcitrance and carbon loss over a 100-year time frame based on best available models. * Must provide a cradle-to-grave LCA to quantify net-negativity of biochar (e.g., European Biochar Certificate C-Sink with CarbonFuture, Puro) and make appropriate deductions to calculate net CDR. * Must ensure that biochar is tested to minimize environmental harms (e.g., adhere to guidelines from the International Biochar Initiative or European Biochar Certificate). * Must prove that the production of biochar results from affirmative practices, or the deliberate modification of an existing facility to produce biochar, for the purposes of additionality. ### Biochar Project Developers Should * Measure biochar decay rates after application and share this data to improve decay models, including decay rates for recalcitrant and labile fractions. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://aetlas.gitbook.io/aetlas/for-project-developers/references-and-other-guidance/additional-principles-for-biomass-based-projects/specific-to-biochar-projects.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.