Sycan Shop Site Remediation

A former railroad ran through the client's property near Klamath Falls, hauling trees from the forest to three different mills. In the mid-20^th century, the locomotives were cleaned using chlorinated solvents, causing soil and groundwater contamination around the maintenance shop. To contain the plume, GSI implemented cometabolic bioremediation using down-well gas infusion equipment in 2012, and oversaw the planting of more than 300 poplar trees at the trailing edge of the plume to facilitate direct uptake of the shallow plume. In 2015, GSI designed and oversaw the removal of more than 5,000 cubic yards of contaminated soil in the source area to enhance the rate of natural attenuation of the plume.

In late 2018, the site officially obtained closure from the Oregon Department of Environmental Quality.

GSI’s work involved:

• Identifying, designing, pilot-testing, and implementing various remediation strategies.
• Pilot-testing cometabolic bioremeditation to enhance natural attenuation of groundwater contamination.
• Moving the site efficiently toward effective cleanup and closure.