(a) In-vessel digestion operations and facilities or portions thereof, located atop fully or partially closed solid waste landfills shall meet postclosure land use requirements pursuant to Title 27, California Code of Regulations, section 21190.

(b) In-vessel digestion operations and facilities or portions thereof, located on intermediate cover on a solid waste landfill shall locate operations areas on foundation substrate that is stabilized, either by natural or mechanical compaction, to minimize differential settlement, ponding, soil liquefaction, or failure of pads or structural foundations.

(c) In-vessel digestion operations and facilities or portions thereof, located on intermediate cover on a solid waste landfill shall be operated in a manner not to interfere with the operations of the landfill or with the closure or postclosure maintenance of the landfill.