204653 NOTICE OF DETERMINATION OF NONSIGNIFICANCE (DNS) The Port of Whitman County issued a Determination of Nonsignificance (DNS) under the State Environmental Policy Act Rules (Chapter 197-11 WAC) for the following project: St. John Chevron Service Station (Site) located at 4 South Main Street in St. John, WA. The Site is currently undeveloped with no structures; however, an approximately 4,000-square-foot building (known as the "St. John Inn Café") located in the southeastern corner of the Site was demolished in March 2026, resulting in a cleared compacted/graded gravel lot with an approximately 45-foot (ft) by 45-ft area of cracked asphalt/concrete for approximately 17 percent impervious surfaces on the Site. The Site has also been recently disturbed as a result of exploration drilling and monitoring well installations for groundwater sampling during Phase II Environmental Site Assessment (ESA) activities. The Site was previously developed with a print shop and a retail service station with underground storage tanks. Currently, the Site is generally covered by a compacted gravel and soil lot with some concrete/asphalt areas. The proposed action would include excavating an area of approximately 5,040 square feet (sq. ft.) to a depth of up to approximately 16 ft below ground surface (bgs). Total remedial excavation is anticipated to include the removal, off-site disposal, and backfill of approximately 80,640 cubic feet (cu. ft.) of soil/material. The extraction would be backfilled to the existing surface lot elevation with suitable clean soil. After reviewing a complete environmental checklist and other information on file, it has been determined that this proposal will not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21C.030(2)(c). The DNS is available at https://www.portwhitman.com/ projects/stjohn and from the Port of Whitman County, 302 N. Mill St., Colfax, WA 99111. Environmentally focused written comments on the SEPA decision may be submitted to the Port of Whitman County, 302 N. Mill St., Colfax, WA 99111, by 5 p.m. on May 21, 2026.