San Diego River FY 2009-2010 WURMP Annual Report Appendices

San Diego River WURMP Annual Report Appendix A-26
FY 2009–2010 Water Quality Activity
TITLE:
ID NUMBER:
Park Ridge Boulevard Bacteria Treatment Project
SDR-A26
ACTIVITY IMPLEMENTATION
The City of San Diego will construct a new catch basin, storm drain, trash
segregation unit, and bacterial treatment system at the southern terminus of Park
Ridge Boulevard. A new catch basin will be placed along the western right-ofway
south of the intersection with Murray Park Drive. The catch basin will be
sized for the full design flow reaching that location.
Flows up to an 85th percentile storm event will exit the catch basin and flow
through a trash segregation unit, followed in series by the bacterial treatment
system. Flows in excess of an 85th percentile storm will exit the catch basin via an
overflow pipe and bypass the treatment system.
A manhole will receive flows from both the treatment system and the overflow
pipe. From that manhole, a new storm drain will convey flows to the outlet
location for the existing storm drain system within the eastern Park Ridge
Boulevard right-of-way. A new headwall sized to accommodate both outlets will
be required at this location.
TMDL APPLICABILITY
• San Diego Region Beaches and Creeks Bacteria TMDL
TIME SCHEDULE FOR IMPLEMENTATION
The project was transferred to the Preliminary Engineering section of the
Engineering and Capital Projects Department in September 2008 for the purpose
of managing the project through final design, construction and project closeout.
Design began February 2010 and is anticipated to continue through FY 2011.
Construction is expected to be completed in FY 2013. Water quality monitoring
will be conducted before and after construction to assess the effectiveness in
reducing runoff volume and pollutant loading.
PARTICIPATING WATERSHED COPERMITTEES
• City of San Diego
OTHER PARTICIPATING ENTITIES
• None
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