Page 94 - California Stormwater Workshop Handouts

Industrial General Permit Fact Sheet

auxiliary functions are performed at the same physical location as the
establishment, then they are subject to General Permit coverage if they are
associated with industrial activities.

This clarification does not change the scope of which facilities are subject to
permitting relative to the 1997 IGP. The 1997 IGP Fact Sheet had used the term
“auxiliary” to describe a facility’s separate primary activities, which has caused
confusion.

In 1997, the North American Industrial Classification System (NAICS) was
published, replacing the SIC code system. The U.S. EPA has indicated that it
intends to incorporate the NAICS codes into the federal storm water regulations but
has not done so yet. The State Water Board recognizes that many Dischargers in
newer industries were not included in the 1987 SIC code manual and may have
difficulty determining their SIC code information. To address this transition,
SMARTS has been modified to accept both SIC codes and NAICS codes, and
NAICS codes are automatically translated into SIC codes. There may be instances
of conflict between SIC and NAICS codes. The use of NAICS codes shall not
expand or reduce the types of industries subject to this General Permit as compared
to the SIC codes listed in the General Permit. State Water Board staff will work
closely with the applicant to resolve these conflicts in SMARTS as they are
identified. Dischargers should be aware that the use of an NAICS code which
results in failure to submit any of the required PRDs under this General Permit
remains a violation of the terms of this General Permit.

The facilities included in category one of Attachment A (facilities subject to
Subchapter N) are subject to storm water ELGs that are incorporated into the
requirements of this General Permit. Dischargers whose facilities are included in
this category must examine the appropriate federal ELGs to determine the
applicability of those guidelines. This General Permit contains additional
requirements (Section XI.D) that apply only to facilities with storm water ELGs.

2. Types of Discharges Not Covered by this General Permit

a. Discharges from construction and land disturbance activities that are subject to
the General Permit for Discharges of Storm Water Associated with Construction
Activity (Construction General Permit).

b. Discharges covered by an individual or general storm water NPDES permit.
Some industrial storm water discharges may be regulated by other individual or
general NPDES permits issued by the State Water Board or the Regional Water
Boards (Water Boards, collectively,). This General Permit shall not regulate
these discharges. When the individual or general NPDES permits for such
discharges expire, the Water Boards may authorize coverage under this General
Permit or another general NPDES permit, or may issue a new individual NPDES
permit consistent with the federal and state storm water regulations. Interested
parties may request that the State Water Board or appropriate Regional Water
Board issue individual or general NPDES permits for specific discharges that, in
their view are not properly regulated through this General Permit. General
permits may be issued for a particular industrial group or watershed area which

Order 2014-0057-DWQ 10