FCZ SUBJECT: 28 Nov 77 Chairman's Report - Conference on Runit Cleanup, 4-5 October 1977 and berm or mound areas. Soil sample depth increment should be 20 cm with a discrete 5S cm deep sample taken from each 20 cm increment. Location of the 5 cm sample within the 20 cm increment to be coordinated between JTG Local conditions of interest may dictate additional samples or and ERSP. change of sample techniques. Such changes are the prerogative of CJTG in coordination with ERSP, subject to availability of resources, i. Soil sample analysis should be done by first characterizing samples by 2 gross exposure rate gamma scan in the ERSP laboratory, if possible gating for 60 Kevgamma from AM 241, Samples which have very high or very low levels of contamination, as shown by gamma scan, may be set aside. The intermediate level samples would require further analysis by gross alpha count and by additional radio-chemical analysis of approximately five percent of these selected samples. Variation of these procedures is the prerogative of CJTG in coordination with ERSP. All samples taken must be properly identified for possible future analysis in support of certification. j. Runit characterization soil sample inputs to the ERSP laboratory must be restricted in order to not interfere with other cleanup operations. Daily sample input of 50 soil samples can probably be supported without interfering with other operations. Final adjustment is the subject of coordination between JTG and ERSP. Resources allocated to Runit characterization should be adjusted as necessary to maintain work flow without laboratory overload. k. AS resources permit, transects should be cut through all berms and mounds on northern Runit. Soil profile samples from such transects should be taken to radiologically characterize the contents. Soil profile cuts below the original surface may be required in such transects. This effort must contribute to cleanup survey and certification as well as characterization. Such work in the Cactus crater ejecta lip should be done only as opportune to other necessary operations. Major effort to characterize this ejecta lip should not be made until extent of entombment area is better defined, 1. It is recognized that soil sampling locations indicated on the Runit data map are only approximate. Specific coordinates by the local 0 oFeer grid system are not available, Locations shown on the Runit data map are the best presently available and on-site location must be done by scaling from the map. Coordinate data available has been provided separately. Co . Le 4 J e ; - + aoTe mee roa ee Tone en. ee . a” ee See ae pes pe earme aeumte eaemneeme Ow