The results of environmental testing at the AvalonBay site in downtown Princeton will be provided to officials tomorrow, Sept. 23, sources familiar with the issue told Planet Princeton.

Construction work has been stopped at the AvalonBay site on Witherspoon Street for almost a month because some materials at the site have tested positive for PCBs.

In anticipation of removing excess materials from the site, AvalonBay conducted a preliminary tests on crushed concrete and advised town officials that they identified the presence of polychlorinated biphenyl (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in some of the concrete.

AvalonBay took additional samples in response to the findings and sent them out for further testing. Avalon Bay representatives also told officials they would provide the test results to Princeton’s staff and professionals. The town will have those results tomorrow, sources said.

Several piles of materials have been covered with plastic sheeting, and the site is being wetted down daily to prevent dust damage. Officials have been monitoring the site on a daily basis.