ing and sampling, paths will be made. In so doing, vegetation will be removed with the least possible disturbance to the underlying soil; e.g., brush will be mowed down by either manual or mechanical means which attempt to leave root structures intact. Any brush which is cut will be collected and removed from the Pu suspect area and mechanically chopped to make mulch. All vegetation thus removed will be assumed to be noncontaminated with plutonium, but will be treated respectfully as though it might contain other radioactive contaminants. Accordingly, it will not be burned. so . pale »: n ‘ . - : x 3. -PIDLER readings will be made while the soil sampling is being performed. be documented C. Locations wnich give a clear plutonium response will é (by the surveyors) along with the reading. SAMPLING METHODS. 1. (surface) Samples will be taken at either the air-ground interface or at depths beneath the interface (profile). Surface samples will be obtained by using a “top-soil cutter" tool which will facilitate removing sod to a depth of 5 cm within a well-defined area. (or total area sampled) will be sufficient to give a sample mass which can be analyzed for plutonium by gamma spectroscopy counting of Am-241 gammas) down to the 40 pCi/g range. (absolute The mass is to RB & & it ha a atts ‘ EB Profile sam- 4 ELE F be determined but probably will be in the order of 0.5 kg. tii, yan nn i a. 4 am... rm area The cutter