GROUNDWATER MONITORING WELL INSTALLATION
SOIL AND GROUNDWATER SAMPLING AND ANALYSIS
CONCEPTUAL SITE MODEL DEVELOPMENT
For more than 50 years, Bruce’s Garage has stored automobiles and parts and has been used as an auto salvage yard. Historic operations at the facility have included the removal of auto engines and gasoline fuel tanks for parts, scrap metal, or short-term storage. Gasoline tanks that were removed for scrap metal were drained of liquid and left open to the atmosphere to allow residual gasoline to evaporate. Soil and groundwater contamination, primarily gasoline-related compounds including methyl tertiary-butyl ether (MtBE), were identified in excess of state regulatory standards as a result of initial investigations following a New Hampshire Department of Environmental Services (NHDES) site audit.
Nobis performed a Supplemental Site Investigation on the nearly five-acre site including the installation of groundwater monitoring wells, the collection and analysis of soil and groundwater samples for Volatile Organic Compounds (VOCs), and an updated Conceptual Site Model. An area of shallow soil source was also delineated and excavated to expedite groundwater restoration.