6-PPDQ (tire wear toxin)

In August 2023 Walley Creek Streamkeepers joined other groups in a tire wear toxin monitoring program run by BCCF in collaboration with VIU.  You can read all about it here.  We sample before, during, and after rain events to look for presence of a short-lived compound found in road runoff that's lethal to Coho.

All results of this monitoring program can be found on the BCCF interactive database. 

In 2023 we sampled Walley Creek at two locations - Morningside Park and the RDN GNPCC. Both locations showed between 3 - 11 ng/L of 6-PPDQ.  and 6-PPDQ was found more often at the upper of the two sites, where Walley Creek flows past the GNPCC.
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In August 2024 we looked at the storm drain inputs for Walley and decided to add a site just downstream from where two storm drain outfalls enter Walley Creek, behind Pipers Pub.   We'll stop monitoring in Morningside Park, since there's no new storm water input below Shores Drive.  The upper site is near a large piece of property that will soon be developed into housing.  Monitoring behind Piper's Pub will allow us to see how the development impacts the creek.  

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