Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Mapping Sunken Pollutant Pools with Depth Finders.
Author Meyer, R. A. ; Brugger, J. E. ; Lowrance, D. J. ;
CORP Author Rockwell International, Newbury Park, CA. ;Lowrance Electronics, Inc., Tulsa, OK.;Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1984
Report Number EPA-68-03-3014; EPA-600/D-84-076;
Stock Number PB84-168699
Additional Subjects Depth finders ; Hazardous materials ; Mapping ; Water pollution ; Density(Mass/volume) ; Creosote ; Sites ; Portable equipment ; Electric batteries ; Prototypes ; Sound waves ; Reflection ; Dispersing ; Submarine topography ; Marine biology ; Protection ; Hazardous materials spills
Library Call Number Additional Info Location Last
NTIS  PB84-168699 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 24p
Many hazardous substances and mixtures are immiscible with and more dense than water. When spillages or releases into waterbodies occur, the hazardous materials will disperse in a pattern controlled by physical properties of the material, flow and dispersion effects, and topography of the waterbody bed. Mapping (i.e., location and thickness determination) of the spilled substance is essential for prompt and economical removal to protect biota and ensure minimal contamination of water. Analysis of the reflection patterns of acoustic waves (ca. 200 kHz) beamed into the water from a boat is shown in this and in previous work to serve as an excellent mapping technique. When the project to map pollutants was initiated, no suitable commercial devices were available. A very effective, portable, battery-operated prototype system was constructed. The reflection data (intensity vs time) were displayed on an on-board dual-trace oscilloscope that had time-delay features. Subsequently, a suitable commercial system was test marketed and has been successfully used in the field to locate creosote in a waterbody.