Accession Number : AD0908992

Title :   Preliminary Report on In Situ Measurements of the Effects of Sewage Discharge from Navy Ships Operating within the 12-Mile Limit.

Descriptive Note : Research and development rept.,

Corporate Author : DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD

Personal Author(s) : Talts, A. ; Stanley, E. M. ; Voisinet, T. H. ; Van Hees, W.

Report Date : APR 1973

Pagination or Media Count : 46

Abstract : This is an interim report of the first of four planned field trials to be conducted as part of the study of the detectability and dispersion of sewage from Navy ships operating within the coastal zone. The first trial was conducted in the waters off Norfolk, Virginia, between 16 and 27 October 1972. Rhodamine WT was added to 5,000 gallons of untreated sewage to serve as a marker dye and for future dispersion modeling. This mixture was discharged from a stationary point source at approximately 10.5 miles off shore. Under these conditions, coliform bacteria in excess of background levels were detected by laboratory analysis of samples collected from the translocated and dispersed dye plume at greater than 7 hours after discharge. Other waste-water constituents in the sewage mixture could not be similarly detected, although this may in part be due to the low initial concentration of the waste. Future trials are designed and scheduled to measure the detectability and dispersion of sewage from a moving point source (with and without the assistance of a marker dye) and of an amphibious operation. This information will be used in an attempt to assess the impact of sewage discharges from Fleet ships operating within the navigable waters of the coastal zone. (Author)

Descriptors :   (*SEWAGE, WATER POLLUTION), SHIPBOARD, DISPOSAL, DIFFUSION, DYES, TIME, MARINE BIOLOGY, COASTAL REGIONS, ENTEROBACTERIACEAE, AREA COVERAGE, WASTES(SANITARY ENGINEERING), SANITARY ENGINEERING, ENVIRONMENTAL TESTS, SHIPS, STORAGE TANKS, SAMPLING, LANDING CRAFT, MICROMETEOROLOGY, PUBLIC HEALTH, PHOTOGRAPHS, MAPS, VIRGINIA, NAVAL RESEARCH, MARKERS, FLUORESCENCE.

Subject Categories : Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE