Make a difference.    The Shellfish Environmental Sampling Assistant positions support the mission by conducting environmental shellfish sampling for the marine biotoxin and Vibrio parahaemolyticus programs. Without preventative sampling for marine biotoxins, we could not close shellfish growing areas to prevent illness.   The mission of the Office of Environmental Health & Safety (OEHS) is to improve the health of people in Washington State by reducing and preventing, where possible, human exposures to a variety of environmental hazards and disease pathogens associated with the disposal of wastewater, the food we eat, the schools our children attend, and the places we recreate and o