REECo activities in support of NAEG field and laboratory needs are included, prepared by Brady, Wireman, Rakow, Rosenberry, Auer, Zellers, Straight, and Smith. Many others, not mentioned in this summarization of current NAEG Nevada Test Site field and laboratory activities, have made contributions toward the objectives of the Nevada Applied Ecology Group. Some results and some future indications have been reported here, together with preliminary attempts to evaluate previous data. Hopefully, the readers will forgive certain compromises in order to effect timely presentation of the information included herein. #U.S, GOVERNMENT PRINTING OFFICE: 1977 - 785-028/1018 322 Region No. 9-1