OTHER SOURCES - SEE 2018 ANNUAL MONITORING REPORT (AMR)

Plume maps can indicate where the source areas are. Of course with aquifers being stacked on top of each other sometimes with low permeability aquitards in between, these indications of source areas can get a little tricky. In other words sometimes contaminants from surface discharges can go straight downward into both the Municipal Upper Aquifer (MU) and the Municipal Lower Aquifer (ML). Other times the contaminants go down to the MU, travel horizontally and then find a "window" where the aquitard is thin or non-existent between the aquifers. Through the window the contaminants go into the deeper aquifer albeit not directly below the contaminants in the higher elevation aquifer (MU). They are off-set.

Check out Figures 4.4 to 4.9 in the recently released 2018 AMR. Those are plume maps for NDMA and chlorobenzene in both the MU and the ML at the start of off-site pumping in 1998 and then again twenty years later. After decades of pumping the source areas tend to stand out better than when the aquifers have had decades of movement and contaminant migration. I think you will see other potential source areas than just Uniroyal Chemical and Nutrite (ammonia). I'm seeing potential source areas near Varnicolor Chemical, Borg Textiles, Sanyo Canada and maybe even McKee Harvestor. All this could have been investigated easily decades ago but hasn't been. It's almost as if our authorities (MOE, RMOW, Woolwich Twp.) and polluters don't want it investigated.