pCi lung burden of insoluble alpha. emitting pirticles Ve net a :wt will give rise to significant adverse health effects . for lifetime exposures. The typical burden of insoluble particles of respirable size (<« 5.0 Um diameter) is about one gram in human adults..- For this reason I would recommend that surface soils 239 should not exceed about 1 pCi of PuO, and other nen insoluble alpha emitting particles per gram of insoluble particulates of respirable size in the ~ @irborne aust resulting from Une disturbance and resuspension of surface soils. On this basis even Se the Colorado standard may give rise to excessive organ burdens. tT ~ _7. Cochran, Tarrlin and Teesiaman all raise the same or similar objections to the DEIS plutonium standards Further explanation of the plutonium cleanup criteria developed ‘by the AEC Task Group is necessary, to III-11.) (DEIS, Vcl. II, Tab B, pp. III-8 We have already mentioned the questionable wisdom of the 40 pCi/g standard. Fox any concentrations exceeding 400 pci/g oyu ti2 Ta Ss < Group recommendaticns require removal of the soil. But in the range between 40 and 400 pCi/g, the DEIS standards call for "corrective action ..... on a case-by-case basis." nr . p. III-9.) (Vol. II, Tab B, Certain criteria are offered for guidance in the exercise of this judgment, but they appear to be entirely too unspecific and subjective. — Once a decision is made to take correc- tive action, ae -_% a oeeoweer Teere vere " =, Lf ae cB. r. ‘ vat wang US uy we Moneys : pet h 1. ' biheee R OR . , a T as . ay vi a te 2 . Saha ee ’ were ST rTacs "ee sta £7 ork