Ambient airborne-solids concentrations including volcanic ash at Hanford, Washington sampling sites subsequent to the Mount St. Helens eruption

Conference · Mon Jun 01 04:00:00 EDT 1981

OSTI ID:5731734

Sehmel, G A

A major eruption of Mount St. Helens, state of Washington, USA, occurred on May 18, 1980. The resulting volcanic ash plume was transported to the east. The Hanford area, northwest of Richland, Washington, was within the southern edge of the fallout plume. Airborne solid concentrations and airborne particle size distributions were measured at two sites in the Hanford area, a southern and northern site. During the initial sampling day (May 19), the average concentration for respirable particles, < 5.5-..mu..m diameter, was 1430-..mu..g/m/sup 3/ at the southern site; the total collection was 2610-..mu..g/m/sup 3/. The respirable content of the total airborne solids was 55%. At both sites average airborne solid concentrations decreased to 10- to 20-..mu..g/m/sup 3/ in December.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5731734
• Report Number(s): PNL-SA-9346; CONF-8108100-1; ON: DE82004005
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
ASHES
COLLOIDS
DISPERSIONS
ECOLOGICAL CONCENTRATION
ERUPTION
HANFORD RESERVATION
NATIONAL ORGANIZATIONS
NORTH AMERICA
PACIFIC NORTHWEST REGION
PARTICLE RESUSPENSION
RESIDUES
SOLS
US DOE
US ERDA
US ORGANIZATIONS
USA
VARIATIONS
VOLCANOES
WASHINGTON