Gea RB on ne, hdl Wt ee tt a y closed Upen arrival at HASL, The entire sample y con= Our . .. oa ae eT OTAL GAMMA AND GAMMA SPECTRUM MEASUREMENTS ward of ht dis- me: . ot andl tone ahead Matt EBS cua chon a et ht ar Rly ced SealdPsnalte, et RE adele the filters are coded, (or a representative logged and quartered. fraction if the activity is too high) is folded and placed in a plastic box, 8 cm x 6.5 cm x 3.1 cm deep, for gamma spectrometric analysis on an 8" x 4" NaI (Tl) crystal. The total gamma activity is integrated between 100 Kev and 3.0 Mev, and the gamma concentration is reported as counts per minute 100 SCM on the counting date. (cpm) per The complex spectrum is then submitted for computer resolution by least squares fitting into its component members. RAD ITOCHEMICAL ANALYSIS Based upon the gamma measurements, ti-~ fractions of the filters are combined into appropriate composites which are sent to contractor laboratories for detailed radiochemical analyses including the following nuclides: 3/8") Fe-55 Sr-89 2r-95 Ce-141 Sr-90 Ce-144 At the present time, Richmond, Pb-210 Po-210 Pu-238 Pu-239,240 Trapelo Division/West formerly Tracerlab of California is performing these analyses. Nuclide concentra- tions from radiochemical analyses are reported as picocuries per 100 standard cubic meters of air (pCi/100 SCM) 1ng a previously established practice, at collection time. Fe-55 is decay corrected to Ir - ll *, % SO ee ng Follow- :