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State agencies urge consultants to upload paired building data to GeoTracker to build California-specific attenuation factors
Summary
CalEPA staff said the GeoTracker building-information dataset needs more statewide representation and paired sampling (indoor air/sub-slab/soil gas/groundwater), and they outlined milestones that aim to produce an evaluative dataset in 2026 if sufficient data are uploaded.
State Water Board staff leading the GeoTracker initiative said California needs more paired building and subsurface data submitted electronically to develop or validate California-specific screening attenuation factors. Tina Yeris, the dataset team lead, told the workshop that GeoTracker currently holds building information for about 135 open cleanup cases statewide while the board identifies more than 5,000 open cleanup cases (excluding UST petroleum cases) that could add representative data by climate zone, building design and age. She said the goal is…
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