TABLE B-1-8. 60Cs (1252.8 keV) BRUSH ATTENUATION MEASUREMENTS Cleared Stake No. Total Cleared Uncleared (pCi/g) (pCi/g) (9) Cleared 100% Brush (Ratio) 7-N-1 6.3 5.9 0.229 1.089 6-N-1 8.3 8.3 0.260 1.000 5-N-1 8.6 8.0 0.174 1.092 5-S-2 15.1 15.1 0.223 1.000 6-S-2 15.9 15,2 0.228 1.060 6-S-1 7.8 8.2 0.174 0.941 4-N-i 9.2 10.3 0.174 0.893 4-5-3 22.3 24.5 0.174 0.873 7-S-1 6.4 7.1 0.174 0.883 Ratio Mean, x = 0.981 Standard Deviation, 7 = 0.088 . o/X =8.9% TABLE B-1-9. CARBON ATTENUATION COMPUTATION keV em2/gm* emai 10/1 60 0.176 0.399 1.147 80 0.161 0.365 1.133 100 0.152 0.345 1.126 200 0.123 0.279 1.100 300 0.107 0.243 1.087 500 0.0872 0.198 1.070 800 0.0709 0.161 1.057 1000 0.0637 0.144 1.051 1500 0.0519 0.118 1.041 *Page 137, Radiological Health Handbook B-1-8 where t = 0.343 em