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Old Mouth of the Cowlitz River Sediment Evaluation
Entry ID: BESTsed28

Abstract: The old mouth of the Cowlitz River provides a channel from deep water
in the Columbia River to old river mile 0.7 of the Cowlitz River. The
site has been dredged in the past to maintain the channel. The
objective of the study was to evaluate the sediments for chemical
contaminants and physical parameters which would prohibit unconfined
in-water disposal. Analytical testing for metals, ... View entire text
Geographic Coverage
Spatial coordinates   
  N: 46.25   S: 45.5   E: -122.5   W: -123.5

Data Set Citation
Dataset Originator/Creator: Mark Siipola, U.S. Army Corps of Engineers
Dataset Title: Old Mouth of the Cowlitz River Sediment Evaluation
Dataset Release Date: unknown
Dataset Release Place: Seattle, Washington
Dataset Publisher: U.S. Environmental Protection Agency, Region 10
Data Presentation Form: database
Temporal Coverage
Start Date: 1991-01-01
Stop Date: 1991-01-01
Quality Laboratory quality control consisted of method blanks, duplicate
analyses, matrix spikes, and surrogate spike recoveries. All QC data
were within acceptable limits with the exception of matrix spike
recoveries for three pesticides. The recoveries were outside of the
upper control limits; however, as ... 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: (503) 326-6463
Email: Mark.D.Siipola at
Contact Address:
U.S. Army Corps of Engineers
City: Portland
Province or State: Oregon
Country: USA
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U.S. Army Corps of Engineers. 1991. Old mouth of the Cowlitz River
sediment evaluation. Unpublished data. U.S. Army Corps of Engineers,
Portland District, Troutdale, OR.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2001-05-27
Last DIF Revision Date: 2018-02-16
Future DIF Review Date: 2002-05-27