North Bergen Municipal Services Complex, North Bergen, NJ
Boswell Engineering supervised the removal of
three (3) and installation of two (2) underground storage tanks (UST) and
performed a detailed environmental investigation at the 3.6-acre North Bergen
Municipal Services Complex. Upon the Township’s request,
Boswell prepared a UST Closure Plan for the site’s three (3) USTs and was granted
permission by the NJDEP to excavate and remove all three (3) tanks. During the
tank removals, Boswell provided oversight and conducted an in-depth
subsurface evaluation of the excavation area. While the structural integrity of
all three (3) tanks was intact, the spill buckets located atop the fill ports of
each tank exhibited evidence of leakage and subsequent petroleum release. The
petroleum contamination was confirmed by elevated volatile organic compound
(VOC) concentrations detected in soils surrounding the
tanks. Due to the presence of
contamination, one (1) groundwater sample was also collected and analyzed.
During the ensuing remedial excavation, approximately 467-tons of
petroleum-contaminated soil were removed and 3,100-gallons of petroleum
contaminated groundwater were vacuumed from the excavation. Following the
removal of all contaminated soil, the excavation was prepared for the
installation of the replacement USTs and backfilled with clean stone.
To assess the tanks’ environmental impact, Boswell performed a UST Remedial Investigation (RI), which included a comprehensive assessment of the site’s hydrology, geology, and topography and an analysis of all soil and groundwater samples. After completing the investigation, Boswell submitted a Remedial Investigation Report to the NJDEP, detailing all aspects of the tank excavations, sampling procedures, analytical test results, conclusions and recommendations.
Boswell is currently performing a detailed groundwater remedial investigation that includes the installation of monitoring wells in order to delineate the horizontal and vertical extent of the existing groundwater contamination and develop the area’s groundwater flow contours. Boswell is also conducting a detailed Receptor Evaluation to address the contaminant’s potential impact on nearby groundwater usage, surface water bodies and subsurface utilities along Routes 1&9.
The scope of work for this project also involved the installation of a fueling system consisting of two (2) 10,000-gallon polyurethane coated steel USTs for municipal vehicles, complete tank and piping monitoring system, overfill protection, leak detection, spill prevention, fuel management system and canopy. Due to site constraints, Boswell’s design engineers worked closely with the Township and the Contractor in order to address site drainage and grading issues and also issues associated with the shallow bedrock in the replacement UST’s location. Working closely with the municipality to ensure an effective start-up, Boswell also scheduled training sessions for the new system with the police and fire departments as well as the DPW personnel.
