[Keyword='POLYCYCLIC AROMATIC HYDROCARBONS']
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Columbia River Dioxin Study
Entry ID:
usepa_best03
Summary
Abstract:
The Columbia River and segments of the Snake and Willamette Rivers are
currently water quality limited due to the presence of elevated levels of 2,3,7,8-TCDD. As a result, U.S. EPA Region 10, established a Total Maximum Daily Load (TMDL) of 6 mg of 2,3,7,8-TCDD/day based upon state water quality standards applicable to the Columbia River basin and the volume of water in the Columbia River. The ... ![]()
Related URL
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
Data Set Citation
Dataset Originator/Creator:
Dana Davoli, U.S. Environmental Protection Agency
Dataset Title:
Columbia River Dioxin Study
Dataset Release Place:
Seattle, Washington
Dataset Publisher:
U.S. Environmental Protection Agency
Online Resource:
http://www.epa.gov/r10earth/data/crbdata.html?dioxin+#first_hit
Temporal Coverage
Start Date:
1994-08-01
Stop Date:
1994-09-01
Science Keywords
ISO Topic Category
Project
Quality
Internal standards, laboratory duplicates, matrix spikes, and method
blanks were used for data evaluation. Preliminary data validation indicates that some of the samples displayed interference with 2,3,7,8-TCDF measurements. Therefore, the analysis for some of the samples of 2,3,7,8-TCDF and total TCDF were rejected (this is preliminary ... ![]()
Access Constraints
None
Use Constraints
Users of these data should be cautioned that a preliminary data
validation performed by the U.S. EPA indicates that some of the data for 2,3,7,8-TCDF should be qualified as unusable. These data have been qualified using an "R" in the database. Data Set Progress
COMPLETE
Data Center
Personnel
Publications/References
Davoli, D. 29 August 1994. Personal Communication (data package sent
to Steve Ellis, Tetra Tech, Inc., Redmond, WA). Selected fish tissue contaminant data from the U.S. EPA Columbia River toxic substances study. U.S. Environmental Protection Agency, Region 10, Seattle, WA. Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date:
2001-02-23
Last DIF Revision Date:
2012-12-12
Future DIF Review Date:
2002-02-23
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