BEST26sed - Reconaissance Survey of the lower Columbia River

Tetra Tech, Inc., was contracted by the Lower Columbia River Bi-State Program to conduct a reconnaissance level survey of water, sediment, and biota (fish and crayfish) contaminant levels in these media of the lower Columbia River below Bonneville Dam (Tetra Tech 1993). Sediment and fish tissue sampling (including crayfish) focused on 54 locations in the mainstem and backwater areas of the lower river. Sediment sampling was conducted using a stainless steel 0.1 m2 van Veen grab deployed by winch from a vessel. Station latitude and longitude were recorded from geographic coordinates provided by a Magnavox MX 2000 Global Positioning System (GPS) Navigator System receiver onboard the vessel. The GPS locational information was not corrected for the U.S. Department of Defense's Selective Availability, and therefore the GPS latitudes and longitudes provided are accurate to approximately 100 m.

Data and Resources

This dataset has no data

Field Value
access_constraints ["Use Constraints: none", "Access Constraints: none"]
bbox-east-long -121.8
bbox-north-lat 45.75
bbox-south-lat 45.5
bbox-west-long -124
contact-email steve.ellis@pentecenv.com
coupled-resource []
dataset-reference-date [{"type": "publication", "value": ""}]
frequency-of-update notPlanned
licence ["Although these data have been processed successfully on a computer system at the U.S. Environmental Protection Agency, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a U.S. Environmental Protection Agency server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Environmental Protection Agency shall not be held liable for improper or incorrect use of the data described and/or contained herein."]
metadata-date 2001-04-01
metadata-language eng; USA
metadata_type geospatial
progress completed
resource-type dataset
responsible-party [{"name": "Pentec Environmental, A Division of Hart Crowser Inc.", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-124.0, 45.5], [-121.8, 45.5], [-121.8, 45.75], [-124.0, 45.75], [-124.0, 45.5]]]}
spatial_harvester true
temporal-extent-begin 1991-09-01
temporal-extent-end 1991-10-01
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • best
  • biomonitoring-of-environmental-status-and-trends
  • bonneville-dam
  • butyltin-compounds
  • ckan
  • cyanide
  • dioxins
  • furans
  • geo
  • geoss
  • lower-columbia-river
  • metals
  • mouth-of-columbia-river
  • national
  • north-america
  • pcb-aroclors
  • pesticides
  • phenol
  • polynuclear-aromatic-compounds
  • radionuclides
  • sediment-grain-size
  • semi-volatile-organic-compounds
  • svocs
  • toc
  • total-organic-carbon
  • trace-elements
  • trace-metals
  • tributyltin
  • united-states
isopen False
metadata_created 2025-11-20T03:38:56.515095
metadata_modified 2025-11-20T03:38:56.515100
notes Tetra Tech, Inc., was contracted by the Lower Columbia River Bi-State Program to conduct a reconnaissance level survey of water, sediment, and biota (fish and crayfish) contaminant levels in these media of the lower Columbia River below Bonneville Dam (Tetra Tech 1993). Sediment and fish tissue sampling (including crayfish) focused on 54 locations in the mainstem and backwater areas of the lower river. Sediment sampling was conducted using a stainless steel 0.1 m2 van Veen grab deployed by winch from a vessel. Station latitude and longitude were recorded from geographic coordinates provided by a Magnavox MX 2000 Global Positioning System (GPS) Navigator System receiver onboard the vessel. The GPS locational information was not corrected for the U.S. Department of Defense's Selective Availability, and therefore the GPS latitudes and longitudes provided are accurate to approximately 100 m.
num_resources 0
num_tags 31
title BEST26sed - Reconaissance Survey of the lower Columbia River