A major petroleum company previously operated a terminal site in Atlantic City, located in a mixed-use neighborhood. The site was impacted with liquid-phase and dissolved-phase hydrocarbons, consisting of soil and groundwater contamination. Kleinfelder was contracted to design and implement the remediation of the site.
The site’s coastal environment has a high water table amid a densely-packed commercial and residential area. Kleinfelder’s pre-design investigation included more than 90 borings for pre-excavation delineation and post-excavation confirmatory analysis, sheet pile shoring system design review, and groundwater modeling to determine the feasibility of dewatering during the proposed excavation activities. Due to the diverse stakeholders surrounding the site, there was high public interest in the excavation.
Kleinfelder developed a unique strategy to excavate ”in the wet” in response to the site’s high water table, as well as the risk dewatering would have on the neighboring buildings’ foundations. Although this decision increased the field effort, it resulted in six-figure cost savings to the client, expedited the time to implement the remedial action, and appeased stakeholders’ concerns.
Kleinfelder’s thorough initial planning and frequent communication with stakeholders addressed noise, vibration, debris, permitting, and water concerns at the onset of the project, proactively mitigating future problems. Moreover, Kleinfelder’s innovative solution to dewatering resulted in a significant cost savings to the client, as well as greater goodwill amongst all stakeholders.