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AQMD logged dozens of odor complaints; Hyperion cleaned a battery tank April 11–15, city staff says
Summary
A city staff member reported roughly 40–48 odor complaints to the AQMD, a notice of violation for public nuisance on April 10, and routine cleaning of a Hyperion battery tank April 11–15; staff said Hyperion consumes the electricity it generates on-site and it is not known if older complaints were tied to the cleaning.
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A city staff member reported that the South Coast Air Quality Management District (AQMD) has received roughly 40 to 48 odor complaints related to the Hyperion bioenergy facility, including 48 complaints in the past two weeks, and issued a notice of violation on April 10 for public nuisance.
The staff member said Hyperion generates the electricity it uses and does not export power to the grid. The staff member also said Hyperion performed regular cleaning of one of its battery tanks from April 11 to April 15, a maintenance process to remove buildup that can accumulate during solids removal.
The staff member said the AQMD issued one notice of violation on April 10 for public nuisance and noted the complaint total in the two-week window. "These tanks do require regular cleaning to remove any buildup that can accumulate during solids removal process," the staff member said. The staff member said they did not know whether any older complaints were related to the April 11–15 cleaning period.
No formal action or vote related to the report was recorded in the transcript. The transcript concluded the Hyperion report after the staff member's remarks.

