EPA Science Inventory

A Field-Based Aquatic Life Benchmark for Conductivity in Central Appalachian Streams (Final Report)

Notice:

EPA announced the availability of the final report. [May 27, 2011]

Citation:

U.S. EPA. A Field-Based Aquatic Life Benchmark for Conductivity in Central Appalachian Streams (Final Report). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-10/023F, 2011.

Description:

Cover of the Field-Based Aquatic Life Benchmark for Conductivity Final Report This report describes a method to characterize the relationship between the extirpation (the effective extinction) of invertebrate genera and salinity (measured as conductivity) and from that relationship derives a freshwater aquatic life benchmark. This benchmark of 300 µS/cm may be applied to waters in Appalachian streams that are dominated by calcium and magnesium salts of sulfate and bicarbonate at circum-neutral to mildly alkaline pH.

Purpose/Objective:

This report provides scientific evidence for a conductivity benchmark in a specific region rather than for the entire United States.

URLs/Downloads:

FR Notice: May 27, 2011   Exit

Field-Based Aquatic Life Benchmark for Conductivity in Central Appalachian Streams (EPA/600/R-10/023F)   (PDF,276 pp, 11601 KB,  about PDF)

Record Details:

Record Type: DOCUMENT (ASSESSMENT DOCUMENT)
Start Date: 06/30/2011
Completion Date: 06/30/2011
Record Last Revised: 07/20/2015
Record Created: 03/09/2011
Record Released: 03/31/2011
OMB Category: Other
Record ID: 233809

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL CENTER FOR ENVIRONMENTAL ASSESSMENT

CINCINNATI OH

BIOLOGICAL RISK ASSESSMENT BRANCH