Record Display for the EPA National Library Catalog


Main Title Detection and mapping of insoluble sinking pollutants
Author Meyer, Raymond A. ; Kirsch, Milton ; Marx, Larry F.
Other Authors
Author Title of a Work
Kirsch, Milton.
Marx, Larry F.
CORP Author Rockwell International, Newbury Park, CA. Environmental Monitoring and Services Center.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Municipal Environmental Research Laboratory,
Year Published 1981
Report Number EPA-600/2-81-198; EPA-68-03-2648; PB82105586
Stock Number PB82-105586
OCLC Number 09093154
Subjects Hazardous substances--Accidents ; Water--Pollution
Additional Subjects Hazardous materials ; Water pollution ; Acoustic detection ; Underwater sound equipment ; Underwater acoustics ; Electrical resistivity
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD  EPA 600-2-81-198 AWBERC Library/Cincinnati,OH 01/12/2009
NTIS  PB82-105586 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xi, 79 p. : ill.
A continuous submersible monitor using a cyclically purged electrical conductivity probe capable of long-term deployment even when buried in sand or silt has been conceived, designed, and tested. The submersible unit, which is battery-powered and has no connection to the shore-based receiver, will transmit the conductivity data via ultrasonic transmission. The unattended design life of the monitor will be 1 year. Based upon the reflection principles of high-frequency underwater acoustics, a commercial 200-kHz depth-finder system has been extensively modified and tested. Laboratory tests have indicated that the system is capable of resolving the echoes from the surface of a 1-cm-deep layer of carbon tetrachloride (CCl4) from those returning from a hard, sandy or muddy bottom. Field testing indicated that few precursors to the bottom echo return are present that might mask or interfere with the detection of an echo from a pollutant pool. Return echoes were evaluated by 16-mm motion picture photography and a computer-based comparator-counter technique has been developed for data management. Recommendations for further development and rapid deployment of the pollutant mapping system are also presented.
Bibliography: p. 47.