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ACCEPTABLE SURFACE CONTAMINATION LEVELS <br />(footnotes con't.) Page 2 <br />c Measurements of average contaminant should not be averaged over more than <br />1 square meter. For objects of less surface area, the average should be <br />derived for each such object. <br />d The maximum contamination level applies to an area of not more than <br />100 cm2. <br />e The amount of removable radioactive material per 100 cm2 of surface area <br />should be determined by wiping that area with dry filter or soft absorbent <br />paper, applying moderate pressure, and assessing the amount of radioactive <br />material on the wipe with an appropriate instrument of known efficiency. <br />When removable contamination on objects of less surface area is <br />determined, the pertinent levels should be reduced proportionally and the <br />entire surface should be wiped. <br />f The average and maximum radiation levels associated with surface <br />contamination resulting from beta/gamma emitters should not exceed <br />0.2 mrad/hr at 1 cm and 1.0 mrad/hr at 1 cm, respectively, measured <br />through not more than 7 milligrams per square centimeter of total absorber. <br />-31- <br />