The objectives were to design a remedial system that prevented vapors from adversely impacting human health in the residence, to reduce the concentrations of gasoline in the soil and groundwater, and to minimize the migration of gasoline to the threatened surface water bodies. CEG evaluated soil and groundwater conditions by conducting pump and remedial pilot tests for the design of two air sparge, soil vapor extraction, and groundwater treatment systems. The air sparge system at one of the stations used angled drilling
Indoor air quality within the residence was monitored using a photoionization detector and a gas chromatograph. The results of the analyses were compared to the Department's Interim Ambient Air Guidelines. Following activation of the remedial systems, it was determined that indoor air quality did not pose an adverse health risk.ethods to remediate gasoline below a building.