INTERLABORATORY QUALITY ASSURANCE FOR ENEWETAK SOIL ANALYSIS DATE DRAFTED: 2 August 1978 DOE/ERSP PROCEDURE NO, 22 APPROVED: I 20 September 1978 by Bruce W. Church (ERSP Manager) Purpose To provide a cross laboratory check on actual soil samples analyzed in the EIC field laboratory. Il. Applicability This procedure applies to all types of analysis performed in the field. Il, Responsibility The Eberline Laboratory Manager is responsible for the selection of appropriate numbers of samples on a quarterly basis and the packaging and shipment of same to REECo. IV. Procedure A portion of those surface samples containing 10 to 100 pCi/g total transuranies which have had chemistry analysis performed and have been scanned by IMP will be selected and further homogenized. A. Sterilize as per soil preparation for Library Storage Procedure and ship under that permit. The sample is placed on a clean plastic sheet for cone and quartering, Divide into four aliquots of at least 100 g dry weight, one will be analyzed on site as an original or rerun and three will be placed in 500 ce Nalgene bottles. Bottles to be labeled with lab sample number only. At this time analyze only for 239,240py, 238pu and 241py, Cesium-137 and 90sr-90y may be of interest in the future. Record all information available such as sample date, location, and laboratory results and forward to Bruce Church, DOE, Las Vegas. The samples selected for each quarter are to be packaged and shipped to REECo where DOE will instruct them as to distribution to three independent laboratories. All results will be reported to Bruce Church, DOE, Las Vegas, approximately two weeks after the receipt of the samples, x... : It may be necessary to collect some extra large samples for this procedure. A-22-1