ML092940540
| ML092940540 | |
| Person / Time | |
|---|---|
| Site: | Plum Brook |
| Issue date: | 10/06/2009 |
| From: | US National Aeronautics & Space Admin (NASA), John H. Glenn Research Ctr at Lewis Field |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML092940540 (1) | |
Text
1969 FLOOD RECORD IN STREAM MOUTH WETLAND (28FEB07 STATUS)
- Cs-1372: 12 pCi/g
- Cs-137 in pond (7.7 pCi/g at 5')
o Cs-137 = 3.4-3.9 pCi/g at 6-30" o Cs-137 to 54", peak 5.9 pCi/g at 6-18" o Cs-137 ~ 1 pCi/g (0.66-2.54),
(0.66-2 .54), in top 18" (mostly top 6")
The Stream Mouth wetland was sampled in a series of transects, similar to the Floodplain Wetland. Each black line above represents a transect, with up to 9 sampling locations per transect. Colored dots show sampling locations with detectable Cs-137 on the date given. Only a few approached or exceeded 12 pCi/g.
pCilg. The most elevated values of Cs-137 followed a stream channel which was present in 1969, but had been abandoned and naturally filled in by the time of sampling in 2006-2007. "BY dups" refers to duplicate samples, co- co located with samples taken earlier in the Bay investigation. "Bogert" is the name of a tributary. "TRIB" is an un-named tributary.
tributary.
14 Attachment 14-5 Page 1 of 1 J