What air sampling methods will be used?
Sorbent tubes (chloropicrin and metam sodium) and canisters (1.3-dichloropropene and methyl bromide) will be used to collect air samples. Samples will be stored on ice, and then delivered to the analyzing laboratory. The Department of Health Services will analyze the samples to measure pesticide concentrations, using standard analytical methods. What quality assurance and quality control procedures will be used? To ensure sample validity and quality, appropriate quality control and quality assurance procedures will be used along the entire sampling process: in the field, during sample storage, and in laboratory analysis. In addition, an independent, multi-agency quality assurance team will audit the laboratories participating in this study. What actions will DPR take based on the results? DPR has developed screening levels for the fumigants to place results in a health-based context. Although not regulatory standards, DPR will use these screening levels to evaluate the results and take
