Measuring Turbidity in Support of Erosion and Sediment Control Monitoring: When, Where, How, and Why?

This webinar highlights examples of monitoring protocols taken from active construction sites and permanent stormwater facilities to showcase how the monitoring strategy can inform or bias our observations and interpretation of results.

Presentation Overview:

Monitoring of turbidity or Total Suspended Solids (TSS) is an integral part of effective erosion control. Turbidity or TSS monitoring can aid in identifying and quantifying potential inputs of construction related sediments to inform and ultimately limit construction related sediment from entering receiving waterbodies.

In many jurisdictions, monitoring requirements such as intensity of monitoring, timing, general location, and triggers/targets are dictated through guidelines and permitting. Unfortunately, many sites are unique with regards to:

  • Connectivity to receiving waterbodies
  • Number of potential point sources
  • Types of sediments activated
  • Sensitivity of receivers

This becomes more complicated when placed in the context of potential sources other than the construction activities being monitored.

In this presentation, examples of monitoring protocols are taken from both active construction sites and permanent stormwater facilities to highlight how the monitoring strategy — including timing, targets and even sampling collection/measurement protocols — can inform or bias our observations and interpretation of results.

Learning Objectives:

  • Understand sediment sources and transport mechanics and how this impacts monitoring results.
  • Understand that the proposed monitoring strategy can bias your measurements and ultimately the interpretation of the results.
  • Understand that sampling protocols need to be based on the physical processes we are trying to characterize and that the design — whether temporary erosion and sediment controls, or long-term ponds — have assumptions that need to be considered in monitoring.

Presenter:

Paul Villard and Patrick Padovan, Geo Morphix Ltd.

 

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If you have any additional questions, please contact Victoria Kring at Victoria.Kring@trca.ca

TRCA HST Registration number is 10808 8584 RT001