The Bureau of Land Management's Colorado State Office awarded a purchase order to Industrial Scientific Corporation on June 1, 2023, valued at $161,574.32 for H2S gas monitoring equipment to support the Inspection and Enforcement Program. Performance occurs in Denver, Colorado, with completion by September 30, 2028. The procurement is firm fixed price with no set-aside category. This modification exercises an option year, corrects the period of performance on line 50, and adds FAR clause 52.222-90. The originating solicitation posted May 18, 2023, with a June 2, 2023 due date.