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Proposed Megawatt Photovoltaic Power Plant
Advantage Engineers provided geotechnical and environmental investigation services for a proposed 1.78-megawatt photovoltaic power plant to be located in Woolwich Township, Gloucester County, New Jersey. The client will construct the plant on an approximate total of six acres of open land. The plant will consist of the following components:
- Solar panel arrays
- Pads for electric equipment (such as switchgear, transformers, and inverters)
- Overhead/underground electrical circuits
Both proposed solar arrays are currently located in deed-restricted areas with in-place engineering controls. The deed-restricted areas contain soil with concentrations of Dieldrin in excess of New Jersey Department of Environmental Protection’s Soil Remediation Standards. During previous remediation activities occurring in conjunction with the school’s construction, the site owner consolidated and capped onsite soils. Advantage coordinated with the Licensed Site Remediation Professional (LSRP) of record to perform all tasks in accordance with N.J.A.C. 7:26E and specific requirements set forth in the filed deed notice. Prior to the commencement of any field activities, Advantage developed a Health and Safety Plan for all personnel performing the investigations.
Advantage conducted a geotechnical subsurface investigation consisting of eight standard earth borings followed by in-house laboratory testing to evaluate subsurface conditions across the project site. Based upon data gathered during the field investigation from the geotechnical engineering review, Advantage provided recommendations to the client concerning the design and construction of the steel pile foundations proposed for support of the solar arrays.
In addition, Advantage performed an environmental investigation consisting of the advancement of sixteen soil borings along the proposed photovoltaic system’s underground utility route to evaluate the surface and subsurface soil quality with respect to the site’s historical agricultural use. Upon evaluation of the sampling data, Advantage developed and incorporated site-specific soil handling recommendations into the site’s existing soil management plan.