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Riverton votes to join PFAS class settlement for Airport Well No. 2; staff given signatory authority

Riverton City Council · July 22, 2026
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Summary

After PFOS was detected in Airport Well No. 2 at 2.6 ng/L (trigger 2.0 ng/L; MCL 4.0 ng/L), council voted to allow staff to execute a retainer and join a class action settlement against PFAS manufacturers; staff will choose counsel at their discretion to maximize net recovery.

Public Works Director Brennan Toman told council that PFOS was detected at Airport Well No. 2 in March at a level of 2.6 nanograms per liter (trigger level 2.0 ng/L; the EPA maximum contaminant level is 4.0 ng/L for the family referenced in the meeting). Toman said the well has been taken offline since the detection and described a July 31 court deadline for municipalities to join a Phase 2 claims process in ongoing litigation against manufacturers including 3M and DuPont. He said preliminary estimates of municipal recovery for Riverton could be in the low hundreds of thousands of dollars depending on well flow and contaminant level.

Council voted to authorize staff to sign a retainer agreement and join the settlement class, granting staff discretion to select counsel (the city attorney indicated no adverse consequences to participation). "So it's it's no longer in service," Toman said referring to the well. The motion passed by voice vote, and staff will select counsel and complete required participation documentation before the court deadline.