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Was this Storm a Qualifying Storm Event (QSE) ?

Qualifying Storm Event is a precipitation event that:
  • Produces a discharge for at least one drainage area; and,
  • Is preceded by 48 hours with no discharge from any drainage area

  • Samples from each discharge location shall be collected within four (4) hours of:
    1. The start of the discharge; or,
    2. The start of facility operations if the QSE occurs within the previous 12-hour period
    (e.g., for storms with discharges that begin during the night for facilities with day-time operating hours).
    Sample collection is required during scheduled facility operating hours and when sampling conditions are safe in accordance with Section XI.C.6.a.ii.