Tewhey Associates has conducted remediation projects of soil containing a wide variety of compounds including all grades of petroleum, chlorinated solvents, and heavy hydrocarbons such as polynuclear aromatic hydrocarbons. Many of the projects have included on-site bioremediation or stabilization. Soil treatment volumes have ranged from a few tons to thousands of tons. We also have on-site field testing capabilites to efficently manage soil remediation projects.
Tewhey Associates is currently conducting several groundwater remediation projects to control subsurface migration of petroleum and chlorinated solvents. The projects include remediation at a former electronics manufacturing site in order to protect water quailty at a municipal well and a clean up of a former gasoline service station in order to protect private wells nearby. System flow rates range from less than 5 gallons per minute to more than 50 gallons per minute. Treatment methods include air stripping and carbon treatment systems. Treated water discharge has included on-site reinjection, surface water discharge (NPDES) and discharge to municipal sewer systems.
Other Remediation Techniques:
Tewhey Associates has experience with a wide variety of other remediation techniques. These include soil and waste covers, free product removal, and the use of impermeable barriers or collection trenches.
P.O. Box 238
Gorham, ME 04038-0238
(207) 839-4261 - Voice
(207) 839-3834 - Fax