Page 146 - California Stormwater Workshop Handouts

Industrial General Permit Fact Sheet

are intended to prevent pollutants from contacting storm water. Examples of such
controls include, but are not limited to:

 Enclosing and/or covering outdoor pollutant sources within a building or under a
roofed or tarped outdoor area.

 Physically separating the pollutant sources from contact with run-on of
uncontaminated storm water.

 Devices that direct contaminated storm water to appropriate treatment BMPs
(e.g., discharge to sanitary sewer as allowed by local sewer authority).

 Treatment BMPs including, but not limited to, detention ponds, oil/water
separators, sand filters, sediment removal controls, and constructed wetlands.

Dischargers may select the most cost-effective BMPs to control the discharge of
pollutants in industrial storm water discharges. Where appropriate, BMPs can be
designed and targeted for various pollutant sources (e.g., providing overhead
coverage for one potential pollutant while discharging to a detention basin for
another source may be the most cost-effective solution).

a. Level 2 ERA Action Plans

The State Water Board acknowledges that there may be circumstances that
make it difficult, if not impossible, for a Discharger to immediately implement
additional BMPs. For example, it may take time to get a contract for construction
in place, obtain necessary building permits, and design and construct the BMPs.
Dischargers may also suspect that pollutants are from a non-industrial or natural
background source and need time to study their site. A Discharger is required to
certify and submit an Action Plan prepared by a QISP via SMARTS by January 1
following the reporting year in which the NAL exceedance that resulted in the
Discharger entering Level 2 occurred. The Level 2 ERA Action Plan requires a
Discharger to propose actions necessary to complete the Level 2 ERA Technical
Report, the demonstrations the Discharger has selected, and propose a time
frame for implementation.

If a Discharger changes the QISP assisting with the Level 2 ERA requirements
this General Permit requires the Discharger to update the QISP information via
SMARTS. Current information on individuals assisting Dischargers with
compliance of this General Permit provides the Water Boards with the necessary
contact information if there are questions on the submitted documents, and for
possible verification of a QISP’s certification.

Dischargers are required to address each Level 2 NAL exceedance in an Action

Plan. The State Water Board recognizes that Dischargers with Level 2 status

may have multiple parameters or facility areas that have Level 2 NAL

exceedances and the timing of the exceedances may make it very difficult to

address all Level 2 NAL exceedances in one Action Plan. When Level 2 ERA

exceedances occur in subsequent reporting years, after an Action Plan is

Order 2014-0057-DWQ 62