
METHANE AVOIDANCE
ALTERNATIVE MANURE MANAGEMENT
As part of the comprehensive approach to reducing methane emissions, California dairy farmers are preventing the production of methane and using manure nutrients wisely.
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The California Department of Food and Agriculture’s Alternative Manure Management Program (AMMP) provides financial assistance for California dairy farm families as they reduce methane emissions through a variety of  technologies and strategies.
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A total of 195 AMMP projects have been awarded grants to date. Projects selected include mechanical solids-liquid separation with drying, conversion of flush systems to scrape with dry manure storage or composting, and compost pack barns. ​​
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According toe CARB's analysis, at least 40 additional, privately-funded alternative manure management projects have been implemented on California dairy farms since January 1, 2013. Additionally, 12 advanced alternative manure manage projects have been funded through the Dairy PLUS Program.Â
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These projects prevent the production of methane by promoting dry handling and storage of manure nutrients.Â
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The AMMP is one of the most cost-effective programs, providing one ton of GHG reduction (CO2e) for every $67 invested by the state.
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AMMP projects promote dry handling of manure, which can be a significant first step in producing a valuable and exportable source of organic matter for building healthy soils.​
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These projects are operating or are in development throughout 15 California counties, including communities on the North coast and in the San Joaquin Valley.
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AMMPÂ projects are estimated to be reducing 254,000 metric tons of Co2e annually.Â
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What do AMMP projects look like? Here's a Few Examples:
Solid Separators
Separators remove solid particles after manure is flushed from barn floors, and before it enters a storage lagoon. The remaining solid fibers can be dried and used as organic compost and/or animal bedding.

Dry Manure Handling
(Flush to Scrape Conversion)
Vacuum trucks, such as the one above, or other scrape (non-flush) Â technologies make it easier to dry the manure and use it as a source of organic nitrogen.

Compost-Bedded Pack Barns
The AMMP can help finance compost enhancement projects, supporting the use of dairy manure as an organic soil amendment.