. . ,. DEVELOP?vlEhTT ASSOCILITED OF SOILCONCEN’rRAT ION~ 239, 24°pu IN AIR IVITH MPC FOR . . LLL RESUSPENSION-FACTOR MASS - LOADING APPROACH APPROACH IA-5483 1,000 pCi/g 600 pci/g - d ● . et’A PROFC)SED INTERIM BY J- lV- IiEALY STAhlDARD FOR PLUTONHUM IN SOILS, “ XKTH”E VALUE 400 pCi/g WAS RECOMMEh~DZD FOR ALL PARTICLE SIZES PROVIDED NO MORE THAN 200 pCi/g in <100 Mfif SIZE FiUCTIONc .