Employees of Stantec Engineering of Salt Lake City and a local drilling crew from Inberg Miller Engineers of Riverton began digging 40 foot deep test wells on the 422 East Main Street vacant lot today. (Ernie Over photo)

(Riverton, Wyo.) – A soils investigation at a city owned parcel of land in downtown Riverton has begun. The lot, at 422 East Main, is the former location of a gasoline and service station and a dry cleaners. Contamination from those previous uses is the result of the investigation to determine if vapors from toxic materials are present at the site, and if they are, what could be done to clean up the site.

The lot is being remediated under the Wyoming Department of Environmental Quality’s Brownsfield program.

“We’ll be performing well and ground water sampling, and soil gas investigations to determine if there is a vapor intrusion program.” said Wyoming DEQ’s Kristi Dobra of Lander at a city council meeting last month. If there is, she said the vapors could enter an adjoining business to the west and to buildings across the Main Street. She said that is where the polluted ground water has apparently migrated. “‘We want to make sure there are no vapor intrusion issues if you decide to put a building on that site.” Dobra said the data from the investigations must be reported back before the DEQ decides what needs to be done to clean up the site. “We need to determine what problems there are, if any, and what to do about those.”

To read the complete report on the investigation, click here.

Drilling is now underway at 422 East Main in Riverton to determine the extent of soils gas and a toxic chemicals plume at the site of a former gasoline station and dry cleaners. (Ernei Over photo)

Drilling is now underway at 422 East Main in Riverton to determine the extent of soils gas and a toxic chemicals plume at the site of a former gasoline station and dry cleaners. (Ernei Over photo)