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Lower Columbia River Backwater Reconaissance Survey
Entry ID: BESTsed27

Abstract: Tetra Tech, Inc., was contracted by the Lower Columbia River Bi-State
Program to conduct a supplemental reconnaissance survey of sediment
and biota (fish and crayfish) contaminant levels in backwater areas of
the lower Columbia River (Tetra Tech 1994). These samples were
intended to expand the data base of the original reconnaissance survey
reported in Tetra Tech (1993). Station latitude and ... View entire text
Geographic Coverage
Spatial coordinates   
  N: 45.75   S: 45.5   E: -121.8   W: -124.0

Data Set Citation
Dataset Originator/Creator: Steve Ellis, Tetra Tech., Inc.
Dataset Title: Lower Columbia River Backwater Reconaissance Survey
Dataset Release Date: unknown
Dataset Release Place: Seattle, Washington
Dataset Publisher: U.S. Environmental Protection Agency, Region 10
Data Presentation Form: database
Online Resource:
Temporal Coverage
Start Date: 1993-06-01
Stop Date: 1993-07-01
Quality The sediment data submitted by the laboratories were reviewed and
validated by Tetra Tech using guidance provided in the Quality
Assurance/Quality Control (QA/QC) Plan developed for this project and
guidance provided by U.S. EPA (1988a,b). A data validation report was
prepared as part of the final ... View entire text
Access Constraints None
Use Constraints None
Data Set Progress
Data Center
Pacific Northwest, U.S. Environmental Protection Agency Supplemental Info
Data Center URL:

Data Center Personnel
Phone: (206) 553-2135
Fax: (206) 553-0119
Email: davoli.dana at
Contact Address:
U.S. Environmental Protection Agency, Region 10
0ea095, 1200 6th Avenue
City: Seattle
Province or State: Washington
Postal Code: 98101
Country: USA
Phone: (425) 775-4682
Fax: (425) 778-9417
Email: steve.ellis at
Contact Address:
Pentec Environmental, A Division of Hart Crowser Inc.
120 Third Avenue South, Suite 110
City: Edmonds
Province or State: Washington
Postal Code: 98020
Country: USA
Tetra Tech. 1993. Reconnaissance Survey of the lower Columbia River.
Task 6: Reconnaissance report. Volumes 1, 2, and 3. Prepared for
Columbia River Bi-State Program. Tetra Tech, Inc., Redmond, WA.
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2001-05-27
Last DIF Revision Date: 2017-08-23
Future DIF Review Date: 2002-05-27