Saturday, July 30, 2022

IS SUPPLEMENTARY SOIL & EARTHWORM SAMPLING SIGNIFICANT?

 OR ON THE CONTRARY IS IT JUST FOR SHOW?


Apparently the Ministry of Environment (MECP) requested that Lanxess better characterize contaminant concentrations around identified "outlier" (i.e. hotspots) locations. It seems to me that Lanxess have cherrypicked location S-14 (02) in the north-east corner of their property. While indeed this location had a high concentration of dioxins (33,110 pg/g) there are others with higher concentrations and much closer to the Creek as in creekbank soils as well as sediments. Normally we refer to the three KNOWN "hotspots" as by the bridges crossing the Creek at New Jerusalem Rd. (Reach 3), Northfield Dr. (Reaches 1 & 2) and the furthest downstream namely Jigs Hollow Rd. (Reach 1). 

I also wonder about location NJCB1 in Reach 3. Yes it has high DDT concentrations in soil but so do many others around the three KNOWN hotspots. 

As far as collecting earthworms at this late date I am wondering why that wasn't done four or five years ago. Indeed twenty years ago some earthworms were sampled on the Lanxess site (east side) and found to have very high dioxin concentrations in them. Moles, voles, birds, fish, snakes, raccoons and many other species consume earthworms and hence via bio-accumulative processes persistent organic pollutants move up the food chain. This is but one more pathway for these toxic contaminants to spread through the environment after their initial release into the natural environment, including the on-site natural environment. 

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