a Le. LAE [7 Aascd/ "| ee 2-3~78 A. pe OH SOSKENG PROJECT. SUBJECT. the i Enewetak Cleanup 4 Quality Assurance Audit ose //2 Sample Preparation Trailer i. QA audit conducted proved sample processing was completed according to schedule but the following are being completed or added: (a) leg of instrument calibration data must be kept up weekly. (b) In-situ van samples must be ball milled and have alpha, gamm, plutonium ard americium performed. (c) 10% of ground zero and sub-surface samples also need ball milling, gamma, plutonium and americium run. B. (d) All work with dry soil samples should be completed under hoods. (e) Balances in labs should be checked and log results weekly. Chemistry Lab 1. Chemistry lab is following all procedures properly. 2. Procedures need to have final documentation and approval by DCE. 3. Urine samples have been processed to varify procedure has be done on island. he Uranium samples have been picked and will be processed by 2/78. 5. Samples flamed for alpha counting must be done in a consistant manner possible usually just one person. Count Trailer 1. Instrument log of calibration and backgrounds is up to date. (But a system must be worked out to store this information on mag tape). 2. Gamma calibration had been changed, but we are back at the original calibration place. Windows have been set on liquid scintillation counter to take care of alpha plutoniun 239, americium 2h1 counting. Backgrounds on alpha spectrometer and gamma spectrometer need to be taken and recorded weekly.