San Diego to process 40,000 tons of organics yearly

ASP Composting System diverts 40,000 tons per year of organic waste into rich compost for sale at the Miramar Landfill Greenery.

With a new covered aerated static pile (ASP) composting system, the city of San Diego said it can now process more than 40,000 tons of organic waste annually. The new system was designed and constructed by SCS Engineers.

The ASP composting system will make compost for sale at Miramar Landfill Greenery.

SCS said the system meets local, state and federal standards with the design and installation semi-impermeable covers for organic materials, composting and above-grade aeration, which significantly reduce emissions.

There are two key components to the city’s organic waste diversion effort, which include a program to divert 60,000 tons of edible food to food-rescue non-profit organizations integrated as part of the city’s holistic plan. Including the composting system, San Diego is efficiently diverting 100,000 tons of organic waste from the landfill. Together, these programs help the city meet state landfill diversion requirements, reduce the city’s carbon footprint, create a by-product for gardens and farming, and increase food donations.

“This unique system diverts more organic material to composting and helps San Diego achieve its goal to reduce the waste flow into the landfill while achieving environmental objectives,” said Pat Sullivan, senior vice president at SCS and reviewing principal on the project team. “The SCS team for this project had the design, engineering, and construction experience to complete the project and achieve the city’s objectives.”

The team was led by Project Manager Vidhya Viswanathan, who has extensive experience leading SCS’s work in San Diego.

“This is a unique opportunity to make a positive difference in the lives of San Diegans,” Viswanathan said. “This project not only expands the city’s composting operations, but it also provides improvements to stormwater management and odor control.”

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