Towne Hall Shoppes

Brick Township, New Jersey
Data Collection, Feasibility and Risk Analysis
(SIN 899-1 and 899-1 RC)

Brinkerhoff Environmental Services, Inc. was contracted by the property owner of this aging shopping mall in Brick Township, New Jersey to provide environmental consulting services as needed to evaluate and implement expansion options. The environmental constraints included a stream and wetland along the northern property boundary; a former municipal landfill on a portion of the property requiring a geophysical study and field investigation to evaluate the content; evaluation and monitoring of an on-site methane recovery system beneath an active parking lot; assessment of groundwater conditions; and obtaining regulatory approvals for expansion of structures on the site.

Towne Hall Shoppes is a shopping mall that was originally constructed over the former municipal landfill in Brick Township. As a condition of the original mall construction, a passive methane monitoring and venting system was installed. When the client purchased this mall for a potential expansion project, Brinkerhoff evaluated the existing environmental conditions, obtained the necessary environmental permits, and developed a more effective methane monitoring plan. Brinkerhoff also identified and mapped the freshwater wetlands, all transition areas, and New Jersey State open waters in accordance with the New Jersey Freshwater Wetlands Act. Wetland boundaries and transition areas were established in accordance with current NJDEP methodology under the specifications of the 1989 Federal Manual for Identifying and Delineating Jurisdictional Wetlands. A Letter of Interpretation application package was prepared by Brinkerhoff, submitted to the NJDEP, and approved.

Brinkerhoff personnel also performed a preliminary assessment that identified the former landfill under a portion of the site. Further investigations performed during the subsequent site investigation and remedial investigation evaluated groundwater in the area and surface water impacts to an adjacent stream. Environmental contaminants were not detected at significant levels and no impacts were observed. When the study was concluded, Brinkerhoff compiled data in a comprehensive report that was used to prepare a Landfill Disruption Permit for removal and disposition of contaminated soil associated with the mall expansion. Brinkerhoff’s in-house CADD and GIS were used for field mapping and plotting of sample locations. In order to obtain permits and approvals, Brinkerhoff personnel provided expert testimony before the local planning board. The permit was approved by both the NJDEP and the local municipality.

As a result of Brinkerhoff’s performance on this complex project, the developer received regulatory approvals for the expansion project within reasonable time frames, and has since constructed multiple additional buildings on the project site. One such building was a child day care center, for which Brinkerhoff designed a passive methane venting and monitoring system with audible alarms, to notify teachers within the building if hazardous levels of methane escape the ventilation system.