Page 89 - California Stormwater Workshop Handouts

Industrial General Permit Fact Sheet

technology-based effluent limitations and water quality based receiving water
limitations. Although there is great variation in industrial activities and pollutant
sources between industrial sectors and, in some cases between operations within
the same industrial sector, the minimum BMPs specified in this General Permit
represent common practices that can be implemented by most facilities.

The previous permit did not require a minimum set of BMPs but rather allowed
Dischargers to consider which non-structural BMPs should be implemented and
which structural BMPs should be considered for implementation when non-structural
BMPs are ineffective.

This General Permit requires Dischargers to implement minimum BMPs (which are
mostly non-structural BMPs), and advanced BMPs (which are mostly structural
BMPs) when implementation of the minimum BMPs do not meet the requirements of
the General Permit. Advanced BMPs consists of treatment control BMPs, exposure
reduction BMPs, and storm water containment and discharge reduction BMPs.
BMPs that exceed the performance expectation of minimum BMPs are considered
advanced BMPs. Dischargers are encouraged to utilize advanced BMPs that
infiltrate or reuse storm water where feasible.

The minimum and advanced BMPs required in this General Permit are consistent
with U.S. EPA’s 2008 Multi-Sector General Permit for Stormwater Discharges
Associated with Industrial Activity (2008 MSGP), guidance developed by the
California Stormwater Quality Association, and recommendations by Regional Water
Quality Control Board (Regional Water Board) inspectors. Dischargers are required
to evaluate BMPs being implemented and determine an appropriate interval for the
implementation and inspection of these BMPs.

2. Conditional Exclusion - No Exposure Certification (NEC)

This General Permit applies U.S. EPA Phase II regulations regarding a conditional
exclusion for facilities that have no exposure of industrial activities and materials to
storm water. (40 C.F.R. § 122.26(g).) (The previous permit required light industries
to obtain coverage only if their activities were exposed to storm water.) This General
Permit implements current U.S. EPA rules allowing any type of industry to claim a
conditional exclusion. The NEC requires enrollment for coverage prior to
conditionally excluding a Discharger from a majority of this General Permit’s
requirements.

3. Electronic Reporting Requirements

This General Permit requires Dischargers to submit and certify all reports
electronically via SMARTS. The previous permit used a paper reporting process
with electronic reporting as an option.

4. Training Expectations and Roles

This General Permit requires that Dischargers arrange to have appropriately trained
personnel implementing this General Permit’s requirements at each facility. In

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