Leo 3 the chomical tonicity is concerned, tothe pile. It is water that is fed OX course, they aro interosted in maintaining corresion rates at an extranely lew level, so dicurouste is acded to thea water to control tho corrosion -- dichromate is a i a uv) ec ny fete ss a w 4 oy 2 ene night be toric -- w2 can attribute th © ons chomical tonicity, and ta toxic material -- cone chonical rate, Ye have run this type of thing weny, many tincs. Ve have also compared this with the water just before it goes inte the pilo, In othor wores, we broushut a sample line dewn froa the chemical treated water just before it gses to the pile. We run these same diletions at the sams temperature ang the result is identical. In othsr words, if w2 eliminate the factor of radiation from this water, we get the identiesi sane picture which tells us that the radiation is not the major factor with» which we ars concerned, Secondarily, w2 have boen runninz, this year, a 4 dichronate test _to see hat the effect of the dichromate is per =Y\ 3 ( wey cc. mer we have added. 4 This ropresants tho parts of dichromate which \ \ ‘This, again, is a chronic study. I think this ‘ . brings un a point in terms of conventional studies on toxicity. If you look through the literature, you generally find that dichromate is sugnosed to be tozic to one-fitth -- sconeawher around S50 parts per million. If you run those for a few woens at a time, you can see whether you start to get a mortality or not