Brownfields Corrective Action
R.E.A. was selected as the Qualified Environmental Professional (QEP) to develop and implement a Corrective Action Plan (CAP) at an historic abandoned railroad engine house located in north-central Vermont. R.E.A. was responsible for developing a plan to address petroleum, solvent and PAH contamination discovered in surface soils surrounding the building as well as interior building and vapor intrusion issues. The selected remedy included the installation of a geo-textile, soil and vegetative cover over four acres.
Contaminated Soil Management
During a Phase I ESA for a real estate transaction, R.E.A. discovered the location of former USTs. Subsequent investigation identified petroleum contamination above State guidelines. R.E.A. was able to quickly make arrangements for soil excavation and off-site disposal. All of the work was completed with VT DEC approval and met all of the deadlines for assisting our client with completing the sale of the property.
After assisting the home owner with radon air testing and inspecting the home, R.E.A. recommended that the on-site water system be tested for the possible presence of radon. The radon concentrations in water were detected at 97,000 pCi/l. R.E.A. carefully designed a radon water mitigation system, and completed the system installation. After operation of the system, the radon levels in the drinking water were reduced by 99.9% - down to 190 pCi/l, which is 79% lower than the EPA threshold.
Phase I & II Environmental Site Assessments
The Phase I site inspection identified good housekeeping practices and proper hazardous waste storage, but noted the presence of several floor drains that were connected to the on-site septic system. The subsurface investigation conducted adjacent to the on-site septic system indentified low concentrations of solvents and metals in groundwater. R.E.A. worked with the client and VT DEC site manager to develop a corrective action plan, which included permanently sealing the floor drains and implementing monitored natural attenuation to track the degradation of contaminants in groundwater beneath the site.