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<br /> TABLE XII <br /> RADIOACTIVITY LEVELS IN RIVER SEDIMENTS , <br /> DOLORES AND SAN MIGUEL RIVERS(a) <br /> Cycle I Cycle II <br />Station Location Gross a Gross 13 Radium-226 Gross a Gross 13 Radium-226 <br />US-l Dolores River above Slick Rock 11 52 2.0 20 48 2.8 <br />US-2 Dolores River below Burro Mine, <br /> above Slick Rock plant 9.0 42 2.7 2l 63 3.4 <br />US-3 Dolores River just below Slick Rock plant 2l 55 4.2 32 62 3.8 <br />US-6 Dolores River 1/4 mi. above mouth <br /> of San Miguel River 5.8 34 <l l6 64 11 <br />US-7 San Miguel River above Uravan 29 40 5.5 24 82 2.9 <br />US-12 San Miguel River 1. 6 mi. below Uravan 260 270 29 43 105 6.0 <br />US-13 San Miguel River just above mouth 210 l60 33 40 72 4.9 <br /> tv <br /> tv <br />US-14 Dolores River, 12 mi. below confluence 59 97 4.3 36 l04 5.2 <br />US-l5 Dolores River at Gateway, Colorado 8.4 44 1.6 5.2 23.2 1.2 <br />M - 2 Dolores River just above mouth 53 59 8.9 4l 87 7.5 <br />(a) All analyses in ~~c/gm of dry sediment <br />