TABLE B-22-3. COMPARISON BETWEEN THE CALCULATED MASS ATTENUATION COEFFICIENT BASED ON COMPOSITION ANALYSIS AND THAT OBTAINED BY DIRECT MEASUREMENT MASS ATTENUATION COEFFICIENT, -/P (em2/g) SAMPLE SOIL SAMPLE RESULTS DIRECT MEASUREMENT 1 0.330 0.337 2 0.324 0.320 3 0.331 0.339 4 0.322 0.328 5 0.342 0.342 6 0.340 0.338 q 0.332 0.335 8 0.336 0.337 9 0.327 0.322 10 0.333 0.333 11 0.335 0.329 Average 0.332 + 0.006 0.333 + 0.007 Las Vegas Commercial Dirt 0.273 Garden Dirt 0.279 Desert Soil 0.246 B-22-6