Page 185 - California Stormwater Workshop Handouts

ATTACHMENT G

REQUIREMENTS FOR DISCHARGERS WHO HAVE BEEN GRANTED AN
OCEAN PLAN EXCEPTION FOR DISCHARGES TO ASBS

implementation schedule. To control storm water runoff discharges (at the
end-of-pipe) during a design storm, ASBS Dischargers must first consider
using LID practices to infiltrate, use, or evapotranspiration storm water runoff
on-site. The BMPs and implementation schedule shall be designed to ensure
that natural water quality conditions in the receiving water are achieved and
maintained by either reducing flows from impervious surfaces or reducing
pollutant loading, or some combination thereof.

D. Reporting

If the results of the receiving water monitoring described in Section F. below
(Sampling and Analysis Requirements) indicate that the storm water runoff is
causing or contributing to an alteration of natural ocean water quality in the ASBS,
the ASBS Discharger shall submit a report to the State Water Board within 30 days
of receiving the results.

1. The report shall identify the constituents in storm water runoff that alter natural
ocean water quality and the sources of these constituents.

2. The report shall describe BMPs that are currently being implemented, BMPs that
are identified in the SWPPP for future implementation, and any additional BMPs
that may be added to the SWPPP to address the alteration of natural water
quality. The report shall include a new or modified implementation schedule for
the BMPs.

3. Within 30 days of the approval of the report by the Executive Director, the ASBS
Discharger shall revise its ASBS Compliance Plan to incorporate any new or
modified BMPs that have been or will be implemented, the implementation
schedule, and any additional monitoring required.

4. As long as the ASBS Discharger has complied with the procedures described
above and is implementing the revised SWPPP, the Discharger does not have to
repeat the same procedure for continuing or recurring exceedances of natural
ocean water quality conditions due to the same constituent.

5. Compliance with this section does not excuse violations of any term, prohibition,
or special condition contained in the Special Protections of the ASBS Exception.

E. Compliance Schedule

1. As of March 20, 2012, all unauthorized ASBS Non-Storm Water Discharges (e.g.,
dry weather flow) were effectively prohibited.

2. By September 20, 2013, the Discharger shall submit a draft written ASBS
Compliance Plan to the Executive Director that describes its strategy to comply
with these special conditions, including the requirement to maintain natural water

Order 2014-0057-DWQ 4