Wood preservation facilities, general recommendations: chapter A, table 25


Table 25. Recommended Routine Environmental Monitoring (All Preservatives)

Item Recommendations
Authority/reporting
  • Develop a site-specific monitoring plan.
  • Define reporting requirements.
  • Re-evaluate the plan if the facility expands or changes the design or operating practices.
Soils
  • Consider implementing a soil monitoring program (with emphasis on unsurfaced ground) including
    • all areas where preservative chemical is routinely stored, processed or handled;
    • all freshly treated wood storage areas;
    • all treated wood storage areas;
    • drainage ditches or areas exposed to surface runoff (including overflow from drip pads and paved/concrete areas).
  • Define sampling frequency (e.g. annual), sample type (e.g. surface, core), and required analyses (e.g. constituents, detection levels, quality control) in consultation with the regulatory agency.
Surface waters
  • Consider implementing a monitoring program for adjacent water bodies:
    • Define monitoring frequencies and required analyses (e.g. constituents, detection levels, quality control) in consultation with the regulatory agency.
    • Define concentrations of concern.
Groundwater
  • Facilities should implement a groundwater monitoring program using permanent monitoring points down-gradient of process areas and treated wood storage areas:
    • Define direction of flow of the aquifer
    • Define well construction.
    • Define sampling frequencies and required analyses (e.g. constituents, detection levels, quality control).
  • Give special attention to on-site wells used for drinking water.
Air emissions
  • Conduct a workplace exposure study once at the beginning of plant operations and update if there are any changes in plant design and/or operating practices.
  • Identify air emission sources using data provided in the workplace exposure study (see Table 26).
  • Monitor air emissions as required by provincial permits or as determined by industrial hygienist if no permits are required.
Liquid waste streams
  • Identify liquid waste discharges (including stormwater runoff):
    • Determine concentrations of preservative constituents.
    • Estimate total mass rates of emissions (suggested).
  • Thereafter, monitor as required for all discharges governed by permits.

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