The following report on the Aeration Facility Project is for your information.  This report will be transmitted whenever changes occur to the operation of the aeration facility, and as a result of data monitoring of dissolved oxygen in the Stockton Deep Water Ship Channel.


Aeration Facility Weekly Update for August 8, 2008

As a part of ongoing pulse tests, the Aeration Facility was turned on Monday, August 4, 2008 at about 9:45 a.m.  The system was operated at full capacity with oxygenated water with a dissolved oxygen (DO) level in the upper 30 mg/l range.  Water was discharged into the Stockton Deep Water Ship Channel for four full days ending Friday, August 8, 2008 at about 10:00 a.m.  In addition, dye tests and longitudinal surveys were completed to measure the dilution of oxygen from the diffuser and to measure the tidal movement and spreading of the dye.  Additional surveys will be conducted next week.

Preliminary results from last week’s efficiency testing at a lower oxygen supply pressure show efficiencies increased slightly to the mid 60% range.  Additional testing will be done to continue to increase the oxygen transfer efficiency.  The system will be off for the next three days and will be turned back on Monday, August 11, 2008 at about 9:30 a.m.