DRAFT. Aemnos | LoulemcatiniinadLabtratcry | . " Jemacy 24, 1908 ser U. S. Dept, of Energy Washington, NC 20545 Dear ‘Mr. Cannon: The Department of Ehergy has conducted the review of théproposed guidance for transuranium elements in the environment by a technica} committee at promised in our letter af November 15, 1983. The following comments and recommendations arese from this review. In our letter of July 8, 1981, we indicated that we had no sections*to the besic dose equivalent limits proposed as guidance. There were also many addi tidaal comments on the draft guidance as then proposed includiag a reference to the nearly 300pages of technical comments provided earlier, ta our curtent review, wa felt that there have been many developments since this letter was iweitten whtch! caused us to change our position on these. numerical values in the guidance. [hase include the recent developments in risk based contro! of anpasure by the ICRP and, more recently, the proposed risk system of tte NCR. The obsolescence of the detailed guidance now proposed by the EPA.1s an fiportant facter. This guidance was developed in accord with a request from the Stete of Colorado to provide guidance for control of the Rocky Flats contamination. This situation now seems to be under control and other existing sites of contamination with transuranium elements appear to present little or no problems. Thus, the primary use of the guidance appears to be future weapons accidents or accidents 1n Taunching a nuclear power Ae Equal Oppetnating Eenptryar/Opersted by University of Caitlornis * /