&, The recommended guidance for 239Pu in soil is: a. <40 pCi/g - corrective action not required. b. 40 to 490 pCi/g - corrective action may be needed. Action to be taken should be determined on a case-by-case basis. c. >400 pCi/s - corrective action required. In applying the criteria for bone and bone marrow in part 1 above, it is assumed that if annual exposures do not exceed the applicable criteria in the year of highest dose, there will not be a requirement for linitins longer term cumulative exposures. On the other hand, implementation of the "lowest practicable” concept will require considerations of effectiveness of remedial measures to reduce both annucl and lonzcr term ennesures te the extent practicable.