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r J <br />FIREMAN'S FUND <br />INSURANCE COMPANIES <br />Environmental Laboratory <br />3700 Lakeville Highway <br />Petaluma, CA 94952 <br />800-FFIC-LAB <br />TO: <br />FROM: <br />RE: <br />Whom It May Concern <br />Jerry Tuma, Ph.D., CIH <br />Laboratory Director <br />Results Reported As "Detected: <br />The California Department of Health Services has <br />directed tis to report "detected" when the analytical re- <br />sult is above the detection limit (3 standard deviations <br />above the signal noise) but below the quantitation limit <br />(10 standard deiriations above the signal noise). Results <br />reported as "detected", therefore, should be interpreted <br />„ <br />as positive at levels too low to be quantitatedlaccurately. <br />w <br />d518u- i Be- <br />