Essex County College
On September 28, 2007 AESI responded to an emergency call at the Essex County College parking desk construction site. During excavation for the installation of building footings, an abandoned underground storage tank (UST) was uncovered. AESI visited the property and determined that the UST was no longer in service. AESI began the process of obtaining municipal permits to remove the UST and scheduled to clean, cut and dispose of the tank. While working to remove the UST, AESI uncovered an additional tank in close proximity to the first.
On October 1, 2007, AESI revisited the site to begin removal of the USTs. During excavation to fully access the tanks, AESI uncovered three additional USTs. The tanks ranged in size from 500 gallons to 1,500 gallons and all were filled with sand. Holes were observed in all of the tanks and a strong petroleum odor was noted. When it became evident that the soil was contaminated, the client was informed that a discharge had occurred and the New Jersey Department of Environmental Protection (NJDEP) spill hotline was contacted.
On October 3, 2007 AESI supervised the removal of the 5 tanks from the property. Approximately 1,000 tons of non-hazardous petroleum contaminated soils were also removed and disposed off site. Following the collection of clean soil samples at the base of the excavation, the area was backfilled to grade with certified clean fill. Monitoring wells were then installed on the property for the purpose of groundwater sample collection and identification of groundwater to determine the extent of groundwater contamination. AESI is currently creating a Remedial Action Workplan to remediate the groundwater at the site.