NCS000431_IDDE SOPs_20190926

Standard Operating Procedure for:
IDDE Citizen Call -in Inspections
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Purpose of SOP: To collect appropriate information from a citizen reporting a
potential illicit discharge to increase the chances of identifying
and removing its source.
Always:
• Use the Illicit Discharge Inspection Form (in shared file) to collect the appropriate
information.
♦ Document any further action taken.
Whenever Possible:
♦ Document and review incidents reported by citizens on an annual basis to look for
patterns of illicit discharge.
Never:
♦ Never put yourself in danger.

Standard Operating Procedure for: �e
IDDE: Tracing Illicit Discharges
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Purpose Purpose of SOP: To efficiently and systematically identify the source of an illicit
discharge.
Always:
♦ Review information collected when illicit discharge was initially identified
♦ Survey the general area/surrounding properties to identify potential sources
of the illicit discharge as a first step.
♦ Trace illicit discharge using the procedures below.
Whenever Possible:
♦ Use weirs, sandbags, or dams to trap intermittent discharges during dry weather.
♦ Smoke test or camera the storm drain system to trace high priority, difficult to
detect illicit discharges.
Never:
♦ Never put yourself in danger.
Tracing Procedures
Flowinq d/scharges use visual tracing and/or dye tracing.
Non -flowing discharges inspect storm drain access points
for staining/residual evidence and/or use dye tracing.

Standard Operating Procedure for:
IDDE: Removing Illicit Discharges
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Purpose of SOP: Proper removal of an illicit discharge will ensure it does
not recur. Using legal methods for the removal will minimize
the municipality's liability.
Always:
♦ Determine who is financially responsible and if fine is applicable:
-Municipality
-Private property owner
♦ Suspend access to storm drain if an "imminent and substantial danger" exists.
♦ Repair/correct cause of discharge if municipality is responsible.
Never:
♦ Never repair/correct cause of discharge on private property until directed to do so
by the appropriate municipal authority (stormwater administrator, etc.)