In Indiana, industrial stormwater discharges are permitted through Rule 6, which is similar to general permits used by other States, and includes many of the same compliance requirements including preparation of a facility stormwater pollution prevention plan, or SWP3. One of the unique aspects of the Indiana Department of Environmental Management (IDEM) requirements is that a facility submits a SWP3 checklist within one year of Rule 6 coverage. This checklist must be signed by an qualified professional and certifies that the SWP3 meet all applicable requirements and the facility is in compliance with Rule 6.

What is an Qualified Professional under Rule 6? The SWP3 Checklist must be certified by a “qualified professional” who is a person “trained and experienced in storm water treatment techniques and related fields as may be demonstrated by state registration, professional certification, experience, or completion of coursework that enable the individual to make sound, professional judgments regarding storm water control or treatment and monitoring, pollutant fate and transport, and drainage planning.”

To reduce the level of effort required for facilities to come into compliance with Rule 6 requirements, Caltha LLP has prepared a SWPPP template based on Indiana requirements, including Indiana specific inspection checklist, visual assessment checklist,  comprehensive storm water monitoring plan, and an annual comprehensive site inspection checklist. Caltha has also prepared a Indiana Stormwater Permit Compliance Plan to assist permitted facilities in organizing and planning compliance requirements under the IDEM Rule 6.

Caltha provides certification of facility SWP3 by a qualified professional meeting the Rule 6 qualification requirements.

For more information on the Indiana industrial SWPPP template, compliance plan and expert SWPPP consulting services, email Caltha at

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