IV-223 



inversely proportional to the distance from the Bay. Figure 



IV. 3.4 shows the anticipated population growth of the three areas. 



Municipal Wastes 



By the mid-1950's wastes discharges into San Diego Bay began to 

 exceed the assimilative capacity of the waters. In late 1960 

 local voters passed a $42.5 million bond issue for the construction 

 of new waste treatment facilities. As a result of the new 

 facilities, no domestic wastes hayebeen discharged to San Diego 

 Bay since 1964. All sewage is now collected and pumped to the 

 treatment plant from which it is discharged into the Pacific Ocean. 



Table IV. 3. 21 shows the estimated annual dollar costs and benefits 

 involved in the Bay clean-up. Annual costs of debt service, and 

 operation and maintenance of the facilities range from $2.3 

 million 1n fiscal year 1967-68 to a projected $3.3 million in the 

 year 2000. These estimated costs have been adjusted to exclude 

 costs not borne by the local residents or those costs not 

 exclusively associated with Bay clean-up. In other words, debt 

 service costs associated with the Federal contribution for con- 

 struction have been excluded along with those costs required 

 whether the wastes are disposed of in the Bay or in the ocean. 



