SCIOPs conducted monitoring of sediment and crayfish in the Lower Columbia River-Wauna area to satisfy NPDES permit requirements. The dataset includes analysis of seventeen dioxin/furan congeners, particle size distribution, total solids, and total organic carbon from five sampling sites. Data collection and reporting were completed in 1991.
Use Cases
- Analyze spatial distribution of dioxin congeners across five sediment sampling stations using recorded latitude and longitude.
- Model bioaccumulation by comparing TOC-normalized sediment values with contaminant levels in crayfish tissue.
- Assess sediment characteristics by correlating particle size distribution data with total organic carbon measurements.
- Evaluate long-term pollution trends by using the 1991 baseline data for dioxin and furan congeners in subsequent studies.
Strengths
- Analysis of seventeen specific dioxin and furan congeners per sample.
- Samples include composite grabs from at least four locations for sediment.
- Geographic coordinates recorded using a GPS receiver for precise site location.
Limitations
- Dataset is temporally limited to a single sampling period in 1991.
- Sample size is limited to five primary monitoring sites.
- Focus is on locations downriver from a specific outfall, limiting upstream comparison.
Provenance
- Source
- SCIOPs, with metadata taken from the Columbia River Basin: Sediment Database Abstracts.
- Collection Method
- Field sampling of composite sediment grabs and crayfish, analyzed using EPA methods (e.g., 1613A for dioxins/furans).
- Time Range
- 1991
- Freshness
- null
- Geography
- Lower Columbia River-Wauna area, Oregon/Washington, USA.