Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Defining Biological Status by Comparing with Reference Conditions (Chapter 4).
Author Hughes, R. M. ;
CORP Author Corvallis Environmental Research Lab., OR. ;ManTech Environmental Technology, Inc., Corvallis, OR. Environmental Research Lab.
Publisher 1994
Year Published 1994
Report Number EPA/600/A-94/136;
Stock Number PB94-190360
Additional Subjects Biological effects ; Water quality ; Criteria ; Water pollution abatement ; Environmental monitoring ; Site surveys ; Standards ; Aquatic ecosystems ; Regional analysis ; Baseline measurements ; Environmental protection ; Environmental impact assessments ; Reprints ; Reference condition ; Environmental Monitoring and Assessment Program
Library Call Number Additional Info Location Last
NTIS  PB94-190360 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/11/1994
Collation 49p
The goal of EPA's biocriteria and Environmental Monitoring and Assessment Program for Surface Waters (EMAP-SW) programs to embrace similar empirical standards and comparative processes for determining reference conditions would encourage the United States to evolve a more environmentally protective, defensible, and consistent monitoring and regulatory network. The goals of this chapter are to (1) explain the purpose and objectives of determining a reference condition for populations of aquatic ecosystems, (2) examine six approaches for determining a reference condition, (3) describe the process for selecting regional reference sites, and (4) propose a way to determine acceptable quantitative scores from reference condition data.