Data · collection
Selected Fish Tissue Contaminant Data from the U.S. EPA Columbia River Toxic Substances Study.
Listed in NASA Earthdata CMR
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.
Description
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. This project is part of an effort to add to the data base on contaminant levels in aquatic organisms in the Columbia River.
The project focused on one or two sampling locations in a limited segment of the river. Criteria for choosing these locations were: (1) sampling at fishing sites has been limited, (2) collecting organisms that are consumed by Native Americans and others fishing in the Columbia River basin, (3) collecting organisms that are of good indicators of contaminant levels in the river and of levels of contaminants that may be ingested by aquatic and terrestrial predators.
Read the rest (3 more)
Sediment samples were taken between RM 146-149 and consisted of five grabs per station. The area of the study was Columbia River - RM 146-149 above Bonneville Dam. Samples consist of a composite of five grabs per station.
Target analytes were dioxins and furans; pesticides; PCBs; semi-volatiles including PAHs; metals (including Hg and As). Analytical techniques included dioxins and furans (EPA Method 1613A); pesticides and PCBs (EPA 8081); semi-volatiles (EPA 8270/GPC); PAHs (EPA 8270); metals (EPA 200.3 and 6010A); Hg (EPA 7471A); As (200.3 and 7060A). Results are reported on a dry weight basis.
Total dioxin and furan concentrations were determined by the laboratory as the sum of the individual congeners that were detected.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214610699-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214610699-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Columbia River · Contaminant Levels/Spills · Not provided · Pesticides · Species Bioaccumulation
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214610699-SCIOPS | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/agriculture/agricultural-chemicals/pesticides | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/ecotoxicology/species-bioaccumulation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/freshwater-ecosystems/rivers-stream/columbia-river | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/environmental-impacts/contaminant-levels-spills | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |