General Information

Event name: US-09-019
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 1 - 8 ppm domoic acid)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): razor clams
Report the outcome of a monitoring programme: Yes (WA Dept. of Health, Office of Shellfish & Water Protection, Marine Biotoxin Monitoring Program)
Event occurred before in this location: Yes (WA coast has been impacted by ASP on a yearly cycle, since 1991)
Individuals to contact: COX, Frank

Location & Date

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Location: Latitude: 45.333056, Longitude: -124.066667
General location information: Washington Coastal Beaches and Coastal Estuaries, Pacific Northwest
HAB Area code(s): US-23
Additional location information: Latitude - 45 deg., 20 min. N - 46 deg., 50 min. N; Kalaloch, Mocrocks Beaches and Quinault Reservation
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudokephyrion formosissimum Conrad ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
razor clams Domoic Acid 8 ppm LC
Kit used: No Type of kit used:
Additional information:
Economic losses: Recreational and commercial razor clam seasons were not interrupted due to domoic acid in 2009.
Management decision:
Additional harmful effect information:
Updated at 05:24 on 20 Apr 2015
Checked at 05:24 on 20 Apr 2015