We reported last week that the Sheridan County Sheriff's Office is seeking information related to an incident of illegal dumping of 100 gallons of a petroleum-based substance 10 miles north of Sheridan.
The Bureau of Land Management's Buffalo field office is also requesting information about the incident.
Hydrocarbon waste was dumped sometime last week at the Welch Ranch Management area on the Decker Highway. The unauthorized discharge was reported on the morning of July 24th. Preliminary estimations are that approximately 100 gallons were dumped along the access road on the northeast side of the Tongue River bridge.
According to the BLM, the Wyoming Department of Environmental Quality, Sheridan County Fire Department and the BLM installed emergency containment and diversion last Wednesday morning, which prevented the spill from reaching the Tongue River.
The contaminated area is confined to the road, borrow ditches and parking area. The BLM is currently coordinating the cleanup. Samples from the spill have been sent for chemical analysis to ensure proper disposal of the unknown substances. Environmental mitigation is currently anticipated to be completed before August 1st.
The BLM requests that people use the parking area on the south side of the river while mitigation is in progress. And if you have any information about the incident, contact the Sheriff's Office at 672-3455, the crime stoppers hotline at 67-CRIME (672-7463) or email firstname.lastname@example.org.