
Projects: Brownfield Assessment & Redevelopment
Environmental Consulting
Situation
A five-acre wooded municipal site was targeted for redevelopment. The plan: build a small sewage treatment plant to address the city’s sewage-overflow problem. The facility would hold three 1.5-million gallon tanks in which high-flow sewage would be held and/or treated on-site. This was a classic Brownfield. It had remained vacant since its municipal well was closed 20 years ago, its groundwater affected by an adjacent property under remediation.
Results
ATC helped the client save approximately $260,000 in waste disposal costs by managing impacted materials on-site. Our concurrent plan of environmental and geotechnical drilling saved an additional $10,000 and ensured consistent and representative data collection. Further, we developed site-specific exposure models and associated human-health risk calculations to facilitate local on-site waste management. Among the payoffs: the development of engineering controls to mitigate exposure pathways. We implemented excavation and off-site disposition methods to remediate areas of environmental impact, primarily from residual 55-gallon drums, pesticides and paint waste. ATC continues to monitor construction and environmental impact and perform associated materials testing.