Record Display for the EPA National Library Catalog
RECORD NUMBER: 95 OF 251
|OLS Field Name||OLS Field Data|
|Main Title||Establishing an Observed Release.|
|CORP Author||Environmental Protection Agency, Washington, DC. Office of Emergency and Remedial Response.|
|Report Number||EPA/540/F-94/031 ;OSWER-9285.7-20FS;|
|Additional Subjects||Pollution sampling ; Ecological concentration ; Site surveys ; Superfund ; Environmental pollution ; Land pollution ; Water pollution ; Hazardous materials ; Level(Quantity) ; Environmental transport ; Path of pollutants ; Remediation ; Hazard Ranking System ; National Priorities List ; Superfund Accelerated Cleanup Model|
EPA uses the Hazard Ranking System (HRS) (40 CFR Part 300, App. A) to evaluate Superfund sites to be proposed on the National Priorities List (NPL). Based on the HRS criteria, an observed release is established when contaminants have migrated away from a site through environmental media. This fact sheet describes an observed release, the data required, and the process used to document it. Efficient sampling also is emphasized to optimize the use of limited resources, which is especially important in light of conducting integrated assessments under the Superfund Accelerated Cleanup Model (SACM).