bi gi 00s fe awh ae _ : TABLE II ros PARTICLE INAIR FOR DIAMETERS GREATER THAN 0,3 MICRON DUGWAY UNDERGROUND SHOTS 1,0 SCALE 0,5 SCALE 0,2 SCALE NPQ SHOTS SURFACE SUBSURFACE 0,2 SCALE 0,2 SCALE 1 23000 6700 — 5667 ~- 2 4700 2300 --- 1478 —~- 3 1700 2000 -— 113 6992 4 4500 790 -— 5 3300 860 -—— 6 1100 740 -—— _—~ 7 20 20 —~ --- PASS NUMBER. — 20* 2916 2032 1568 20% *Blank First pass was made at approximately two minutes after zero time, and each succeeding pass at intervals of two minutes, C2-22190