Appendix D ANALYTICAL DATA from SAMPLES of SEAWATER lated value of 4.43 x 108 (dis/min)/liter for 1 mr/hr Duplicate samples of sea water were furnished by the NRDL and the SIO. At the HASL, each sample was fil- gamma at 3 feet. tered and the remainder evaporated. the general magnitude of this assumption is correct. The beta activities However, the results do indicate that for both particulate and salt fractions were determined by counting. These data were corrected for radioactive decay on the basis of the decay curves in Reference 7. Particulate salt separation and beta analysis were performed on a group of depth samples supplied bv D.1 SURFACE SAMPLES The beta analysis, corrected to H+ 24 hours, is summarized in Tables D.1, D.2, D.3, and D.4, for Shots Zuni, Flathead, Navajo, and Tewa. D.2 DEPTH SAMPLES The sampling loca- tions were plotted on the aerial-survey isodose charts and the gamma intensity at each station was estimated by extrapolation between the isodose contours. Because Project 2.62 (SIO). The count-time corrections for radioactive decay were made to the mean of the counting period for all samples within a group. The data from Shots Flathead and Navajo are summarizedin Table D.5, and from Shot Tewa in Table D.6. These values are plotted in Figures D.2 and D.3. Activities below 10 dis/min are not particularly vahd, the gamma dcose-rate values are estimated, further extrapolation may contain errors. The time of gamma because they correspond to counting rates below the survey and the time of sampling do not necessarily coin- samples from Shots Flathead and Tewa are based on cide, so the interviewing horizontal translation of the the average of several identical samples. water mass can introduce displacement errors. activity for Station N-17, after Shot Navajo, is based on The surface activity, as beta disintegration per min~ ute per liter, has been plotted against estimated gamma dose rate in Figure D.1. With the large variation of the statistically reliable level. The surface activity for The eefCface a single sample and maynot represent the actual surface conditions. A mixing depth of 60 meters is indicated by this data (Figure 3.26). toh Rahs a eS ee a ak eeAe tyer na ae observed data, it is not possible to confirm the calcu- DOE ARCHIVES 69 | TO cesEnt Pine a i ie AED ree — os