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 1, 2008

As a part of ongoing pulse tests, the Aeration Facility was turned on Monday, July 28, 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 1, 2008 at about 10:15 a.m. In addition, a test was conducted on Wednesday, July 30, 2008 to feed oxygen at a lower pressure to measure if higher oxygen transfer efficiencies could be attained. Results are still being analyzed. Thus far, the maximum efficiency achieved has been in the low 60% range. An efficiency of 80% is hoped to be achieved through additional optimization testing. The system will be off for the next three days and will be turned back on Monday, August 4, 2008 at about 9:30 a.m.