On the basis of the most recent water quality sampling results, the Marin County Environmental Health has authorized the all-clear with respect to water contact in the Bay in the area of last week's sewer overflow. The posted signs are being removed.
A sewer system overflow (SSO) occurred from the public sewer system on Bridgeway and Richardson. The blockage has been cleared.
The SSO event, Cal EMA Reference No. 13-7308, has been revised at 16:34 on 11/26/2013 to 53,100 gallons of waste water overflowing to the San Francisco Bay.
The SSO entered the City of Sausalito storm drainage system Storm Drainage Map A catch basin (CB)43 to CB 44 to final outfall to the San Francisco Bay through Bay Drain (BD) 60.
The SSO event was mitigated by 09:04 on 11/26/2013 and cleanup was completed by 10:45. Cleanup included the four-inch (4") private upper sewer lateral serving 303 Bridgeway. The majority of the waste water that overflowed came from 303 Bridgeway's sewer relief valve. Waste water covered the sidewalk and entered the CB 44 on the west side of Bridgeway. This is the location of the majority of the overflow. Waste water definitely overflowed from Sanitary Sewer Manhole (MH) 120100 Sanitary Sewer Map S09.
The SSO event started at 18:00 11/25/2013.
The SSO occurred for 15 hours.
The SSO event average flow rate was 59.20 gallons per minute.
The SSO event was due to excessive debris in a City of Sausalito Sanitary Sewer Manhole 120100 at the intersection of Bridgeway and Richardson Street.
The SSC will enter into the California Integrated Water Quality System (CIWQS) Data Base on 11/26/2013.
The SSC will enter in the City of Sausalito Computerized Maintenance Management System (CMMS) on 11/26/2013.
Regional Water Quality Control Board SF Bay was contacted 08:04 and updated by 15:04 on 11/26/13 and updated regarding this SSO event.
Claudia Villacorta with RWQCB SF Bay Region was notified on 11/26/2013 at 15:45 of this SSO event. Rebecca Ng with Marin County Environmental Health Department was contacted at 09:01 and 16:26 on 11/26/2013 this SSO event.