10 100 O-- -O- --0 137, — _u G2 © = 10 241 Am ACTIVITY — pCi/g a RELATIVE '37cs CONCENTRATION; 241 am CONCENTRATIONS (pCi/g) OF 2419, Q.4 0 20 40 60 80 DEPTH (CM) FIGURE B-9-4. CONCENTRATION OF !37cs AND 241m VERSUS DEPTH IN THE PLOW X-2 AREA OF ISLAND JANET B-9-9