MASS ATTENUATION COEFFICIENT (SOIL SAMPLE DATA) 30 —e 25 NUMBER 01T-22- 20 NUMERICAL AVERAGE 0.333 £ 0.012 15 30 31 32 33 34 35 36 37 38 Bb fem? Pp g FIGURE 8-224. DISTRIBUTION OF THE iN SITU MASS ATTENUATION COEFFICIENTS OBTAINED FROM ELEMENTALPLUS ORGANIC ANALYSIS OF 124 SOIL SAMPLES