[Keyword='Lower Columbia River']
Accumulation of Dioxins and Furans in Sediment and BiotaEntry ID: BESTsed24
Abstract: Monitoring of sediment and crayfish (Pacifastacus leniusculus) was
conducted in order to satisfy monitoring requirements set forth in the
City of St. Helens National Discharge Elimination System (NPDES)
Permit (Tetra Tech 1992). Samples were collected from five sites to
evaluate the accumulation of dioxins and furans in sediment and
crayfish. Sediment and crayfish sampling primarily focused on
... locations downriver from the location of the outfall pipe.
Sediment samples were collected and analyzed for seventeen
dioxin/furan congeners, particle size distribution, total solids, and
total organic carbon. All sediment data are presented on dry weight
basis and TOC-normalized values are also provided in the report.
Sampling station latitude and longitude were recorded from geographic
coordinates provided by a Trimble Navigation Global Positioning System
The area of study was the Lower Columbia River-St. Helens.
Each sediment sample consisted of a composite of at least four grab
samples. Surface sediments (top 2 cm) were transferred to a stainless
steel bowl and homogenized with a stainless steel spatula. The
samples were placed in jars and stored on ice except for the samples
designated for TOC analysis. These samples were stored on dry ice.
Target analytes were seventeen dioxin and furan congeners.
Conventional analyses included particle size, total solids, and total
organic carbon (TOC).
Analytical techniques included dioxins and furans (EPA Method 1613A),
TOC (modified EPA Method 415.1), total solids (EPA Method 160.3.),
particle size (Puget Sound Estuary Program Protocols). All results
are reported on a dry weight basis.
The information for this metadata was taken from the Columbia River
Basin: Sediment Database Abstracts.
Data Set Citation
Dataset Title: Accumulation of Dioxins and Furans in Sediment and Biota
Dataset Release Date: unknown
Dataset Release Place: Seattle, Washington
Dataset Publisher: U.S. Environmental Protection Agency, Region 10
Data Presentation Form: databaseOnline Resource: http://www.epa.gov/r10earth/data/crbdata.html?dioxin+#first_hit
Start Date: 1991-09-01Stop Date: 1991-09-01
Quality Data were reviewed by Dr. William Luksemburg of Alta Analytical
Laboratory. The review included all ion chromatograms, initial and
continuing calibrations, column performance check mixes, calculations
of positive values and detection limits, ion abundance ratios for
internal/surrogate/recovery ... standards and positive natives, matrix
spikes and duplicates, and calculation of lipid content. No data were
qualified based upon review of QA/QC data. Method blank, laboratory
control sample, internal standard, and detection limit data were
included in the report. The only qualifier code used in the data set
provided was "U" - Not detected. Value given is the detection limit.
Comparisons between sediment and crayfish tissue contaminant data
collected for this study are possible as the sampling locations for
crayfish correspond to sediment sampling sites. All data entered in
the database were reviewed for data entry errors. All detected errors
There were no data gaps.
Access Constraints None
Use Constraints None
Data Set Progress
Tetra Tech. 1992. City of St. Helens discharge monitoring report:
Accumulation of dioxins and furans in sediment and biota. Prepared
for City of St. Helens, St. Helens, OR. Tetra Tech, Inc., Bellevue, WA.
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2001-05-27
Last DIF Revision Date: 2017-08-23
Future DIF Review Date: 2002-05-27