PA001 – Pneumatic Fracturing
Automobile Maintenance Facility – Lancaster, Pennsylvania
Pneumatic Fracturing (PF) was applied in six (6) fracture wells in a fine clay formation at an automobile maintenance facility contaminated with VOC’s, primarily TCE, in Lancaster, Pennsylvania. Four (4) fracture wells were installed inside of an active building and the other two (2) just outside of the building. Ground surface heave was monitored during fracturing to monitor for any effects on the building structure. No movement of the building structure was detected during pneumatic injections. Pressure influence was detected at surrounding monitoring points, indicating fracture propagation in the subsurface. Pneumatic Fracturing was part of a full-scale remedial action at the site to enhance bio-stimulation. The Pneumatic Fracturing operations were completed in April 1996; the full-scale system was installed in late 1996.