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e <br /> 77 <br /> a t <br /> break in slope is observed, a barrier between zones 3 and 5 does <br /> exist. If no break in slope is observed, the existence of a <br /> ^ paleo-channel cross-connecting zones 3 and 5 is confirmed. <br /> The second aquifer test we recommend is an injection/recovery <br /> F test of zone 3. This type of test is suggested because, at <br /> times, zone 3 does not contain enough water for a standard pump <br /> test. if the first aquifer test confirms the existence of a <br /> barrier between zones 3 and 5, a rigorous test of zone 3's <br /> properties can be conducted using existing wells �14-1 and NW-I4. <br /> If no barrier exists between zones 3 and 5 'at,•t 5W corner of d <br /> the site the test of zone 3 will have to be nd ed over near { <br /> ,t <br /> well MW-14. For this test, we would i er 5-10 cm piezometer <br /> into zone . 3 between two wells. We,wo inject into one. <br /> -.. <br /> well , monitor the level in 'the e r and recover water from i <br /> l <br /> the second well at the same The injection and recovery ! <br /> well data can be regarde s rror images and analyzed by <br /> standard mathematical techn ques. <br /> After completion 'of thea aquifer testing,g, .the :pump test data will ' <br /> be analyzed by a'ppropriate' methods developed for aquifers under <br /> water table conditions. Appropriate representative values of <br /> transmissivity and storage coefficient will be determined and <br /> nonpenetrating boundaries will be identified if any exist within <br /> the radius of influence of the test. We will then use a computer € <br /> model-that has-been- developed-and extensively tested for . { <br /> - i <br /> groundwater:f]n« pattern analysis. This modeling will allow u5 <br /> to select the optimum locations for injection and recovery wells' i <br /> ; <br /> V <br /> ` to allow maximum control of groundwater flow and the movement of <br /> nutrient solutions. This in situ operation pian will most <br /> -29- <br /> 5 1 '. .: v:a_i.yi:0 a.4krirY1 ln• W:i:.:P�i•'M,! �oaew.1[a.rofe'A3i:-....• r. e.w ... j <br /> ti..cn <br /> 5� <br /> z � <br /> t <br />