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Planning panel hears report on contaminated Nedlock site near Laramie

December 23, 2025 | Laramie City Council, Laramie City, Albany County, Wyoming


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Planning panel hears report on contaminated Nedlock site near Laramie
Chair convened the meeting and agreed to a late addition to the agenda so a commissioner could report on a recent DEQ/EPA public meeting about the Nedlock property, a 12–15 acre parcel just outside Laramie city limits.

At the meeting, Donald summarized the history and current concerns: the property formerly hosted Williams Strategic Metals and between roughly 1943 and 1990 conducted metal-extraction work that left lead, arsenic and mercury contamination. "It has an arsenic concentration of 500,000 parts per million, in one building, Building B1," Donald said, and staff noted indoor mercury vapor monitoring and asbestos. He said EPA and the Wyoming Department of Environmental Quality are moving forward with remedial work and that the site could become a Superfund candidate.

Commissioners pressed for detail about sampling and health thresholds. One commissioner asked what the acceptable arsenic limit is and how the 500,000-ppm figure compares; Donald clarified the high figure referred to a dust sample taken indoors and said more comprehensive soil and groundwater sampling is planned, though staff has not yet completed a full dataset. He also described photographic evidence suggesting buried material in the rear of the site, which remains uncharacterized.

The presentation highlighted potential exposure pathways: dust inside an unsecured building accessible to children, and a surface drainage that connects to the Laramie River. Donald said indoor dust and localized areas are of particular concern and that removing contaminated dust poses logistical challenges.

No formal action was taken by the commission on the Nedlock report during the meeting; the item was informational. The commission did not receive public comments opposing or supporting the site report at this meeting. Follow-up steps noted by the presenter included ongoing sampling plans and continued coordination with EPA and DEQ.

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