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1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />N- <br />13 <br />t <br />14 <br />15 1 <br />16 <br />e <br />a <br />17 <br />g <br />18 <br />0 <br />0 <br />Z <br />19 <br />W <br />_ <br />20 <br />m <br />a <br />21 <br />_ <br />W <br />22 <br />23 <br />24 <br />25 <br />JAI, 271( <br />20 <br />subtropical waters, the primary turnover factor is <br />wind. The water -processing surface creates the <br />convection and mixing of these things. <br />This is most important,•but there are other <br />things as important.. One of the things you <br />want to prevent is the chemical stratafication <br />mentioned in that letter, where you have some <br />deposits where it doesn't get mixed, and accumulates <br />in the lower level and kills fish down there. <br />Well, this is very elementary. One of the <br />things you have to address is when you design a basin <br />of this sort is the factors that are going to be involve( <br />in mixing this, not necessarily complete flushing <br />of everything out with every tide, which would <br />be ideal, of course, but convincing factors. <br />So the technique designed by Dr. Christiansen <br />and the staff in the past seven years of research, <br />and this was heard by the way if you read in that <br />letter lay the Federal funds and state funds, and <br />it's very impor tant., It has shown that you can <br />put together a computer model that will show you <br />as you plug in all the factors here, what's going <br />to happen, and that computer model is not just <br />something on paper. It can then be tested in a model <br />situation to see if that mixing occurs as the computer <br />PooK 8 PAGE 739 <br />I <br />