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State toxicologist: PCB levels in Utah Lake fish have fallen; channel catfish advisory may be removed pending more sampling
Summary
Utah Department of Environmental Quality toxicologist Jacob Ridgeway reported sharp declines in PCB concentrations in Utah Lake fish from recent surveys and said state health officials are "leaning" to remove the channel catfish advisory pending confirmation sampling; the advisory for common carp will likely remain due to data variability.
Jacob Ridgeway, a toxicologist with the Utah Department of Environmental Quality’s Division of Water Quality, told the Utah Lake Authority on Jan. 14 that recent fish-tissue sampling shows substantial declines in polychlorinated biphenyl (PCB) concentrations in several species, and that state health officials are considering changing the lake’s fish-consumption advisory.
Ridgeway summarized the advisory’s origins, noting state and federal surveys in the early 2000s led to a consumption advisory first issued around 2006 for common carp and channel catfish. "There is an existing fish consumption advisory for carp and channel catfish on Utah Lake," he said, and described how sampling by the Department of Natural Resources, lab analysis by DEQ, and health determinations by the Department of Health and Human…
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