27. 
performance of the proposed new outfall in Santa Monica Bay, 
if unchlorinated primary effluent of the type studied is to be 
discharged. 
Disappearance is less rapid once the effluent reaches the 
surf zone. This is explainable, if sedimentation is a major 
factor in removal of coliforms on the basis of the elimination 
of settling by the turbulence in the surf. In effect, it is 
only the time of travel from the outfall to the surf zone, and 
not to the beach, that is of importance in coliform disappearance. 
CONCLUSIONS WITH RESPECT TO STATE STANDARDS 
In the "Decision dated May 2, 1956, of the State Water 
Pollution Control Board" standards were set for the "waste 
discharges proposed by the City of Los Angeles in its June 13, 
1955 report. . .“ Of the standards set, only two refer to the 
permissible coliform densities and the question to be discussed 
in the following section is whether, in the light of the infor- 
mation available, they will be met. The non-bacteriological 
aspects of the standards will be dealt with in other sections 
of the final report. 
In the specifications, the area around the proposed outfall 
is divided into three areas, each protected for different bene- 
ficial uses. Area 1 includes waters within 5,000 feet of the 
nearest sludge or effluent outlets; Area 3 comprises the waters 
between high-water line on the beach and a line 1,500 feet off- 
shore from the high water line; and Area 2 the waters not 
included in Areas 1 and 3. For purposes of sampling, eight 
traverses were established that ran radially outward on specified 
