Work Description
– General:
Chase Environmental Group was contracted to provide contaminated
soil and debris removal at the site of a Navy F/A 18 jet
Crash at a remote site in Dayton, TN.
Chase established a grid system in the remediation area.
The remediation area consisted of three “zones”. Zone One
was approximately 75’ x 250’ and was considered to contained
soil which had the highest probability of containing impacted
soil Zone Two was a fifty-foot wide border around Zone One.
Zone Three was a 100’ x 200’ area north of Zone One, which
contained soil that had a low probability of being impacted.
Samples were obtained in opposite quadrants of the all grids
using a flame ionization detector. Grids which contained
field screening results above 50 ppm were excavated using
tracked excavating equipment. Chase placed the material
into a stockpile. After obtaining approval from the state,
the waste soil was loaded in dump trucks and taken for disposal.
The plane debris was loaded into roll-off containers for
disposal. Debris removal was completed in Level C personal
protective equipment due to the hazards associated with
removal of carbon fibers contained in the plane pieces.
Jet Crash Clean-Up
After each grid was excavated,
additional field screening samples were obtained to verify
that the remaining soil was beneath clean-up levels. When
field screening was completed, Chase personnel obtained
confirmatory samples and sent samples for volatile and petroleum
hydrocarbon analyses. After the confirmatory results demonstrated
that the levels in the soil were beneath the clean-up level,
the area was backfilled with soil, topsoil and seeded and
mulched.
The plane crash impacted
a small stream that bisected Zone One. Chase personnel excavated
the stream bank and placed rip-rap in the areas of remediation.
Chase personnel also completed improvements to the property’s
access roads and improvements to surface drainage pathways.
Approximately 1000 tons of non-hazardous hydrocarbon impacted
soil and plane debris were disposed.
Location:
Dayton, Tennessee
Regulatory Basis:
Special Waste / OSHA
Contaminants: Chemical: Hydrocarbons; Special Waste,
Recyclable petroleum products.
