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City staff reviews waste-energy emissions monitoring, reports results below permitted limits; contract renewal on consent agenda
Summary
Staff described continuous emissions monitoring, quarterly and annual testing by a contractor, and a contract renewal listed as item 3 of 4 renewals at $155,000 plus tax; staff said monitoring shows emissions well below regulatory limits enforced by Spokane Regional Clean Air Agency and other state/federal agencies.
City staff presented on continuous emissions monitoring and related contract renewals for the City's waste-energy facility at the Oct. 20 PIES Committee meeting, saying monitoring and audits show the facility operates well within regulatory limits.
"The waste energy monitors emissions continuously. You can see up there the criteria that we measure for as part of our Air Operating Permit. So these are measured 24/7, 365," the presenter said. Staff described a contract with DECO that performs quarterly Relative Accuracy Test Audits (RATA) to compare sampled results to the Continuous Emissions Monitoring System and an annual emissions test that collects stack samples for lab analysis of toxins and trace compounds (for example, dioxins, furans, metals, particulate, acid gases, ammonia, hydrocarbons and PCBs).
The presenter said the contract renewal under discussion is item 3 of 4 renewals and carries an annual cost of $155,000 plus tax. Staff also said there are separate consent-agenda contracts for activated carbon (injected to capture heavy metals such as lead and mercury) and for fabric filter bags (used to capture particulate) associated with the air-emissions control system.
During questioning, staff said the facility's test reports have been "well below the emissions limits" and identified the Spokane Regional Clean Air Agency as the local regulatory authority; Department of Ecology and EPA limits also apply. No excursions beyond permitted limits were recalled in the discussion excerpt provided. The item was presented as background for consent-agenda renewals; the transcript did not record final council votes in the provided excerpt.
