Page 46 - California Stormwater Workshop Handouts

Industrial General Permit Order

iii. Outdoor industrial equipment and storage areas, outdoor industrial
activities areas, BMPs, and all other potential source of industrial
pollutants.

b. The monthly visual observations shall be conducted during daylight
hours of scheduled facility operating hours and on days without
precipitation.

c. The Discharger shall provide an explanation in the Annual Report for
uncompleted monthly visual observations.

2. Sampling Event Visual Observations

Sampling event visual observations shall be conducted at the same time
sampling occurs at a discharge location. At each discharge location where a
sample is obtained, the Discharger shall observe the discharge of storm
water associated with industrial activity.

a. The Discharger shall ensure that visual observations of storm water
discharged from containment sources (e.g. secondary containment or
storage ponds) are conducted at the time that the discharge is sampled.

b. Any Discharger employing volume-based or flow-based treatment BMPs
shall sample any bypass that occurs while the visual observations and
sampling of storm water discharges are conducted.

c. The Discharger shall visually observe and record the presence or
absence of floating and suspended materials, oil and grease,
discolorations, turbidity, odors, trash/debris, and source(s) of any
discharged pollutants.

d. In the event that a discharge location is not visually observed during the
sampling event, the Discharger shall record which discharge locations
were not observed during sampling or that there was no discharge from
the discharge location.

e. The Discharger shall provide an explanation in the Annual Report for
uncompleted sampling event visual observations.

3. Visual Observation Records

The Discharger shall maintain records of all visual observations. Records
shall include the date, approximate time, locations observed, presence and
probable source of any observed pollutants, name of person(s) that
conducted the observations, and any response actions and/or additional
SWPPP revisions necessary in response to the visual observations.

Order 2014-0057-DWQ 38