During the 1980s the parcel was used as a working
and storage area for the Sydney Tar Ponds cleanup project. The area
is currently being used by DTPW for soil storage associated with
the sewer interceptor and Tar Ponds cleanup project. The Tar Ponds
dredge (“Blue Heron”) is stored in this area.
The results of testing performed by JDAC in 2000/2001 indicate
that one borehole location, MCES-006-MW, is located within this
area. Soil samples collected from this borehole exceeded the Canadian
Council of Ministers of the Environment (CCME) guideline values
for commercial sites for EPA 625s (semi-volatile compounds such
as naphthalene), PAHs, HCNs, and dioxins/furans.
Groundwater from the same location exceeded the Canadian Drinking
Water Quality Guideline values for heavy metals (barium and iron),
EPA 625, PAHs and HCNs. The NSDEL Tier 1 guidelines were also exceeded
for petroleum hydrocarbons. These chemical groups are consistent
with Tar Ponds contamination.