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City wastewater staff defend biosolids land-application program, note monitoring and storage limits
Summary
Riverside Water Reclamation Facility staff outlined the plant’s biosolids program, its regulatory history since 1982, routine lab sampling and land‑application practices, and identified storage capacity and emerging contaminants (PFAS, pharmaceuticals) as ongoing concerns.
City wastewater staff presented a high‑level overview of the Riverside Water Reclamation Facility’s biosolids program to the Public Infrastructure and Environmental Sustainability Committee.
Kyle Arrington, Riverside plant manager, described the treatment path for solids — screening, settling, digestion, dewatering — and said the plant has applied treated biosolids to agricultural land in the Spokane region since about 1982. Arrington said biosolids are analyzed extensively and that the program adheres to state…
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