Senate Bill 23, described by the sponsor as an effort to define and track "solar radiation management," did not receive a favorable recommendation from the Senate Government Operations Committee on a 4–2 vote. The bill would have required a Department of Transportation mechanism to accept reports of known geoengineering activity and refer credible reports to the attorney general for investigation.
Sponsor Senator Winterton told the committee the bill "defines the solar radiation management" and would address what he described as chemical residues found in wilderness areas. He listed substances he said have been cited by advocates as used in geoengineering, saying they include "aluminum, barium, sodium" and argued that Utah should have a mechanism to investigate if such activities are known.
Proponents who testified included Kristen Ritchie of Eagle Forum, who read excerpts from a former Air Force environmental specialist she called a whistleblower, and Mary Anne Christensen of Utah Legislative Watch, both of whom urged the committee to provide statutory tools to investigate and protect public health. Ritchie said the whistleblower "absolutely" confirmed spraying and described soil and air sampling she said showed harmful elements.
Opponents and skeptical committee members raised questions about the evidentiary basis and practical scope of enforcement. Senator Bluhn asked how SB 23 would fit with a separate bill that would require regulators to use peer-reviewed, independently verifiable science; he said peer-reviewed standards may not align with the advocacy sources the sponsor cited. Senator Bridal said she would vote no because of potential state liability and the manpower burden involved in tracking flights and following up on complaints.
The committee first adopted Amendment 1 — a one‑word change that replaces "suspected" with "known" in two places — at the sponsor's request; the amendment was requested by airport operators and adopted without opposition. After debate and summations, the roll call showed the motion to favorably recommend the amended bill failed 4 to 2, with Senators Winterton and Vickers voting in favor and the remaining members opposed.
The sponsor noted the bill preserves an exemption for cloud seeding under Title 73 and said the measure is intended to create a reporting and referral pathway rather than immediately criminalize unspecified conduct. No state investigation or prosecution mechanism beyond the referral to the attorney general was adopted by the committee.
With the committee's negative recommendation, SB 23 does not move forward from this hearing. The sponsor said he expects to continue receiving constituent emails and photographs related to the issue.