Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Hazard ranking system issue analysis : alternative methods for ranking the persistence of hazardous substances in surface water /
Author Wang, Ming P.
CORP Author United States. Environmental Protection Agency.
Publisher MITRE Corp.,
Year Published 1987
Report Number MTR-86W172; EPA 540-R-87-016
OCLC Number 17660035
Subjects Hazardous wastes.
Additional Subjects Hazardous waste
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EIAD  EPA-540/2-87-503 Region 2 Library/New York,NY 05/30/2003
EJAM  TD811.5.H184 Region 3 Library/Philadelphia, PA 01/01/1988
EJBD ARCHIVE EPA 540-R-87-016 Headquarters Library/Washington,DC 11/13/2013
EJBD  EPA 540-R-87-016 Headquarters Library/Washington,DC 04/30/2014
ELBD  EPA 540-2-87-503 AWBERC Library/Cincinnati,OH 04/06/2012
EMBD  MTR-86W172 NRMRL/GWERD Library/Ada,OK 04/15/1994
ERAM  TD193.5.W3 1987 HWC Region 9 Library/San Francisco,CA 01/01/1988
ESAD  EPA 0196 Region 10 Library/Seattle,WA 01/01/1988
Collation viii, 156 p. : map, charts ; 28 cm.
"November 1987"--T.p. "MTR-86W172"--T.p. "Sponsor: U.S. Environmental Protection Agency"--T.p. "Contract no.: EPA 68-01-7054"--T.p. EPA 540-R-87-016, per NSCEP's publication title list. Includes bibliographical references.
Contents Notes
This report addresses possible modifications to the persistence ranking method in the current HRS to better reflect the environmental attenuation potential of hazardous substances in surface water. The joint effect of several important processes, including biodegradation, hydrolysis, photolysis, volatilization, free-radical oxidation, and sorption, is evaluated using steady-state models for idealized water bodies. Two alternatives are proposed which rank the persistence of substances according to the expected change of substance concentration over the HRS target distance limit. Alternative I considers all six processes mentioned above. Its application requires field measurements to quantify the fraction of substance sorbed and the subsequent sedimentation loss of the sorbed chemicals. Alternative II considers all processes except sorption; its application does not require field measurements. In streams and rivers, the majority of substances are expected to be ranked as persistent (i.e., less than 50 percent reduction in concentration) unless sedimentation loss of the sorbed substances is significant. In general, substances are expected to be less persistent in lakes and reservoirs than in streams and rivers because of the longer reaction time in lakes and reservoirs and because lakes and reservoirs are good sedimentation traps.