Project Location: Cedartown, Georgia
Date: 1999
Project Description:
An estimated 150 gallons of diesel fuel were released along a state highway during a rainstorm. Fuel migrated down a drainage ditch, through an underground stormsewer and into a sloped wooded area (60 feet of vertical relief). The ditch drained to a marsh. A spring outcrop was located approximately 200-ft northeast of the drainage ditch.
This area is located in a most significant groundwater recharge area. Remtech’s remedial action program consisted of three phases: (1) Spill containment with sorbent and straw check dams during rain events (2) Site drying and upper ditch section soil excavation and site restoration and (3) clearing, treatment and monitoring of lower ditch section with Remtech’s natural enzyme bioremediation accelerator HC-2000.
One hundred tons of soil were excavated, loaded, and transported to a bioremediation facility for soil recycling. The lower stream section was cleared of brush to provide treatment access. A series of straw check dams were installed to provide increased residence time for enzyme contact. Four monitoring wells were installed at the base of the hill to monitor the degradation process and were closed at the end of the project.
Enzyme Application to Streambed
TPH Soil Concentrations Reduced by up to 98%