Piscataway Bioenergy Project

EBA Engineering, Inc. (EBA) provided civil, geotechnical, and environmental services for the Washington Suburban Sanitary Commission (WSSC) Water Piscataway Wastewater Resource Recovery Facility (WRRF) Bioenergy project. By converting the WRRF from a treatment plant into a bioenergy production facility, this project will help lower fossil fuel consumption by generating green energy to power the plant, while reducing the amount of waste requiring off-site disposal and creating safe, marketable biosolids for fertilizer. Currently under construction, the two-phased project is scheduled for completion in spring 2024.

EBA prepared contract drawings and specifications for the early works package, which included selected building and tank demolition, relocation of utility lines, grading and addition of new storm drains, design and construction of a new construction access road, required erosion and sediment control for over 26 acres of disturbed land, and stormwater management design and permitting. Efforts also involved modeling, calculations, and creation of supporting documents for the plans.

EBA’s environmental engineering services involved identifying and quantifying hazardous materials, including asbestos-containing components, lead-based paints, polychlorinated biphenyls, ozone-depleting compounds, universal wastes, storage tanks, and other regulated materials requiring removal and proper disposal prior to building demolition; developing technical specifications and construction documents for the abatement of hazardous materials affected by the planned work; and preparing technical comments related to hazardous materials in work areas for inclusion on the design drawings.

EBA conducted a subsurface exploration program that included 22 soil borings to evaluate options for foundations and earthwork. Selected options included augered cast-in-place piles and spread foundations. EBA also prepared technical specifications, construction documents, and cost estimates for geotechnical items.

Ongoing construction phase services include reviewing contractor submittals, work plans, and RFIs and providing responses, comments, and technical guidance related to the above service areas.