Case Study - Commercial Retail Facility
Project Overview
This waterfront Wolfeboro, New Hampshire site is located on a parcel which, from 1920 to the present, had been the site of a number of petroleum storage operations and one coal storage operation. The site also contains fill and demolition debris. Site soil and ground water were known to be contaminated with No 2 fuel oil. Other historic, undocumented contaminant releases may have occurred at the site, and documented releases of diesel fuel at an upgradient abutting property have migrated, as a non-aqueous phase liquid (NAPL), onto the site. Up to three feet of NAPL was observed on ground water at the site, and ground water samples indicated the presence of dissolved-phase petroleum hydrocarbons at concentrations in excess of applicable New Hampshire risk-based standards. This site has since been redeveloped by the current owner for commercial and retail office space. A Site Investigation has been conducted to characterize the nature and extent of the contamination, to identify the potential human and environmental receptors, and to assess potential risks associated with the site. EnviroSense worked closely with the client and the New Hampshire Department of Environmental Services (NHDES) regulatory staff to complete these tasks.
EnviroSense Role
- Review the historic data on the property and upgradient abutters regarding contaminant releases.
- Design a data collection plan to characterize site conditions.
- Meet with state regulators to negotiate the data collection plan and the subsurface investigation strategy.
- Supervise the installation of soil borings and monitoring wells, and conduct field screening of soil.
- Collect soil and ground water samples for laboratory analysis.
- Evaluate data, and identify exposure pathways, environmental and human receptors, and characterize risks associated with the contaminated media identified at the site.
- Assist with public involvement as needed.
- Prepare and submit a Site Investigation report to the client and to the NHDES.
