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486 oxidation ponds and chlorination is equal to or superior to treatment in Redwood City , Belmont and San Carlos plants , Probability is that the outfall into Steinberger will not have to be used and that additional oxidation will not have to be created . In response to question by Councilman Henderson relating to City ' s investment in this facility , Manager stated that the expenditure was minor . Mr . Reiter commented it was anticipated to be a short -life facility , having been constructed of corrugated metal pipe as opposed to concrete pipe , Councilman Henderson noted that there has been some question as to whether chlorination is satisfactory or sufficient as a technique for reduction of contamination and asked Mr . Reiter for comments on whether other techniques should be considered . Mr . Reiter replied in the affirmative but stated this is not applicable to the present situation . He stated that in the summer months there is a condition called algae bloom that depletes the oxygen . This situation can be alleviated by another circulation system piped through the levee . There has been some difficulty in convincing the Regional Water Quality Control Board that this is a needed project . DMJM is endeavoring to do this prior to next summer . The chlorination work being done now arises out of a different problem than algae bloom in the summer . This is simply an overflow from the pumping stations and chlorine is a disinfectant as opposed to treatment . It is not recommended as a standard operating procedure for lagoons . Two things are involved here , the summer condition of algae bloom , and the overflow from the pump stations . They will continue to work with the Water Quality Control Board and attempt to eliminate the summer problem . City Manager agreed with Mr . Reiter that with the chlorination and the introduction of fresh water runoff through the storm drain system into this area and with the advent of cooler weather , the problem at present is under control if no further contamination occurs . He stated he will check with the County to see if they have made any tests recently . City Manager also commented on problem of getting approval from the Water -T Quality Control Board to install the pipe through the levee to increase the circulation . They will continue to work on this problem . Councilman Keckley inquired if there was more than one spill due to failure of the pump system . Mr . Reiter replied there have been other spills , but