da'yu higher activity density than you rad to kogin with, Re ERUMZOLZ: R. FOSTER: $I¢ is on pase 19 of your siwimary. I would like to toss that on to Dr, Foarce in tho biovhysies section, is extremoaly Isw? 1 un phosphorous in tho Columbia River fate Is it covrsct in recalling that tho amount of natural t lows: than most natural water? DR. PHARSSN: It is low, but not particularly. I think it is apparent that ve do not have all of the fish y; ocblens Solved, and Dy, Tostor mentioned the difficulty of sampling in the Columbia River, and it lesks to mo Ide it may bo desirable for a nyember of you to go out thore so that you can kelp him out br inis t-b To salmon at the anoropriate eason. a (te Bh en this sampling of up ecvr Hanford prcezran, Br. Hungate will oo discuss the uptake of fish products and plants and aninals in the environs of tho Hanferd plant, DR. LINSSERG: I wanted to ask if you have dono any toxicity studies on tho caddis fly. DR. FOSTER: We are setting up equirment for that. Ws roalisa the Salmon misht not bo the most extensive form, and ve want to do a shotsun Gxporiment with a larse varicty of invortebrates to see if we can find senething that may be a more critical organisn. “MISS PATRICK: If you aro working with caddis flies, be sure you are working with then specifically, and know what