Unclassified 



■ CLASSrFlCATION OF 



REPORT DOCUMENTATION PAGE 



1. REPORT NUK 



TN-1396 



2. GOVT ACCESSION 



DN344018 



3. RECIPIENT'S CA 



«. TITLE fand Submit:) 



THE SURVIVAL OF SEWAGE BACTERIA AT 

 VARIOUS OCEAN DEPTHS 



TYPE OF REPORT & PERIOD COVERED 



Final; June 1973-June 1974 



PERFORMING ORG. REPORT NUMBER 



AUTHORfs. 



H. P. Vind, J. S. Muraoka, and C. W. Mathews 



PERFORMING ORGANIZATION NAME AND ADDRESS 



CIVIL ENGINEERING LABORATORY 



Naval Construction Battalion Center 

 Port Hueneme, California 93043 



61152N;ZR-000-01; 

 ZR-031-02; Z-ROOO-01-140 



CONTROLLING OFFICE 



•JO ADDRESS 



Director of Navy Laboratories 

 Washington, DC 20376 



REPORT DAT 



July 1975 



^BER OF PAOES 



20 



14 MONITORING AGENCY 



ulE a ADDRESSfil 



SECURITY CLASS, (o 



Unclassified 



DECLASSIFICATION DOWNGRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (ul fhfs Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol Ihe Bbs 



IB. SUPPLEMEN 



19. KEY WORDS (Conn 



identity by bloc 



Ocean, seawater, sunlight, survival, hydrostatic pressure, sewage bacteria, ocean pollution, 

 E. coli. 



20. ABSTRACT (Conti 



Sewage outfalls in the ocean are usually relatively close to shore at depths of 200 

 feet or less. An investigation was undertaken to ascertain if Escherichia coli, the principal 

 species of bacteria in sewage, would survive for shorter or longer periods if the sewage 

 were discharged at depths of 1,000 feet or so, where there is no light, and where the 

 pressure is greater and the temperature is lower. Cultures of the Seattle strain of E. coli 

 in autoclaved seawater were placed in 25-ml bags made of dialyzing tubing. Some of the 



DD I JAN 73 1473 EDITION OF I NOV 65 IS OBSOLETE 



MBL/WHOr 



Unclassified 



continued 



■ CLASSIFICATION OF 



D3D1 DDMDBll 1 



