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Location: Northern Georgia

Client: Major Publication Company

Contract Amount: $270,000

PROBLEM

Construction on a $16 M publication building was stopped for four months by the State Fire Marshal when building permits were revoked due to gasoline found in elevator shaft excavations. A geotechnical firm was initially engaged that indicated that there

were thousands of gallons of gasoline under the footprint of the construction site.

SOLUTION

Remtech was engaged by the building owner to attempt to resolve the contamination problem and have building permits reinstated by the State Fire Marshal.

Remtech demonstrated that fuel in the fractured rock formation was hydraulically connected with minimal fuel production during pump tests. A Sandborne map was discovered in the attic of the city planners office that depicted a filling station located under the contractors construction trailer.

The trailer was moved and a forensic excavation was conducted. No USTs were discovered, but remnants of an old pump island were located. Chemical linkage was established (by sampling) from the old tank pit to the fuel footprint demonstrating that the source had been removed.

Remtech prepared a remedial action plan that was accepted by the State Fire Marshal and County permitting officials that allowed construction on the building to resume during the plan implementation.

COST/BENEFITS

• Building permits reinstated and $16M building completed

• Subfloor ventilation system and recovery wells integrated with building floor construction

• Remtech mobile groundwater treatment system used in final construction

• Remediated 600 cy of contaminated soils onsite during construction

• Recovered less than 150 gallons of free product

• Gasoline vapor levels under the building were reduced below 10% of LEL within 6 weeks

• Gasoline vapors were reduced below detection limits in 2 years.