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would begin with injection into well 90-5 with low flow rates (50 <br />GPM range) to avoid washing insolubles into a possible tight spot <br />at the connection of the horizontal and vertical holes in the <br />Boies Bed. The solution temperature in this early development <br />phase will be in the 120°F range. The first returns from the <br />well, containing drilling mud and untreated water, will be <br />directed to the evaporation pond. <br />Flow rates will be increased to 200 GPM in 50 GPM increments. The <br />incremental changes will be made every four hours, if, the <br />pressure drop measured across the well pair is stabilized. <br />Injection temperature will be increased to 160°F in two 20°F steps <br />one hour apart. <br />~v.~ <br />Circulation will continue at 200 GPM until 10 tons of bicarb has <br />been leached. At this time the flow rate will be increased to 600 <br />GPM in 100 GPM increments each four hours. <br />Up to this point the circuit will be flowing through the plant <br />without cooling or crystallization. When the 600 GPM/160°F <br />circulation system reaches 80t saturation, cooling <br />crystallization will be initiated. This event is expected to <br />occur on the 6th day. <br />The first 30 days or so will be cavity restricted operation where <br />the return solution is not saturated. The daily production is <br />~ determined by the leach rate and exposed surface area. The <br />54 <br />55 <br />