Comments on “Remediation of Sydney Tar Ponds and Coke Ovens Sites Environmental Impact Statement, Sydney, Nova Scotia” Dated December 2005 Comments submitted by G. Fred Lee, PhD, PE, DEE G. Fred Lee & Associates, El Macero, California Email:
[email protected] Website: www.gfredlee.com May 15, 2006 The Sierra Club Cape Breton Group has requested that I conduct a critical review of the adequacy of the Environmental Impact Statement (EIS) for the proposed remediation of the Sydney Tar Ponds contaminated sediments and Coke Ovens Site contaminated soils in providing reliable information on the potential impacts and benefits of the Sydney Tarp Ponds Agency’s (STPA’s) proposed remediation project. My review focuses on the adequacy of the remediation approach in protecting public health and the environment from the residual pollutants in the “remediated” sediments for as long as they represent a threat. Overall Assessment Overall, I find that the Sydney Tar Ponds Agency’s EIS for the proposed remediation of the contaminated sediments is highly deficient in providing the information that the governmental agencies and the public need to understand about the potential problems and benefits of the Agency’s proposed approach of in situ mixing of cement or other materials with the contaminated sediments in preventing further pollution of surface and ground waters in the region and Estuary by the residual pollutants that will be present in the so-called “remediated” sediments. The Agency has failed to properly evaluate the potential for cement-based solidification/stabilization (S/S) to prevent continued release of pollutants such as PCBs, etc., that are a threat to public health and the environment.