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 actions as follows. (1) If the maximum air concentration is an order of magnitude (1/10) below the screening level, no action will be taken. However, more evaluation may still be done. (2) If the maximum air concentration is between the screening level and an order of magnitude (1/10) less than the screening level, a more refined analysis will be undertaken. (3) Maximum air concentrations exceeding the screening
