Page 34 - California Stormwater Workshop Handouts

Industrial General Permit Order

contain storm water-related BMPs or otherwise relate to the requirements
of this General Permit.

c. The Discharger shall properly reference the original sources for any
elements of existing plans, procedures, or regulatory compliance
documents included as part of their SWPPP and shall maintain a copy of
the documents at the facility as part of the SWPPP.

d. The Discharger shall document in their SWPPP the facility’s scheduled
operating hours as defined in Attachment C. Scheduled facility operating
hours that would be considered irregular (temporary, intermittent,
seasonal, weather dependent, etc.) shall also be documented in the
SWPPP.

E. Site Map

1. The Discharger shall prepare a site map that includes notes, legends, a
north arrow, and other data as appropriate to ensure the map is clear,
legible and understandable.

2. The Discharger may provide the required information on multiple site maps.

3. The Discharger shall include the following information on the site map:

a. The facility boundary, storm water drainage areas within the facility
boundary, and portions of any drainage area impacted by discharges
from surrounding areas. Include the flow direction of each drainage
area, on-facility surface water bodies, areas of soil erosion, and
location(s) of nearby water bodies (such as rivers, lakes, wetlands, etc.)
or municipal storm drain inlets that may receive the facility’s industrial
storm water discharges and authorized NSWDs;

b. Locations of storm water collection and conveyance systems, associated
discharge locations, and direction of flow. Include any sample locations
if different than the identified discharge locations;

c. Locations and descriptions of structural control measures11 that affect
industrial storm water discharges, authorized NSWDs, and/or run-on;

d. Identification of all impervious areas of the facility, including paved
areas, buildings, covered storage areas, or other roofed structures;

11 Examples of structural control measures are catch basins, berms, detention ponds, secondary containment,
oil/water separators, diversion barriers, etc.

Order 2014-0057-DWQ 26