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material faster than the existing Feed Hopper can accept it, overflow chutes will allow excess material to be conveyed to a Feed Stockpile, for later processing through the system. The existing 2-Deck Symons Screen will be replaced by a Hewitt Robins Horizontal 5 x 16 ' 3-Deck Wet Screen, to be installed into the existing screen tower structure (25 hp) . This screen will allow oversized material to be bypassed back to the startup of the process (15 hp) , while coarse aggregate material continues on to the existing Log Washers. Fines from the new 5 ' x 16 ' 3-Deck Screen are conveyed (10 hp) back through a Cedar Rapids 40 x 20 Model Dual Roll Crusher (75 hp) , and thence back to the startup of the process (15 hp) , where these sands pass through the "Clean Sand" processing system. . The second existing 2-Deck Screen will be replaced by a Hewitt Robins Inclined 5 x 16 ' 3-Deck Wet Screen, skid mounted, semi- portable screen tower structure (20 hp) . This screen will allow a final separation of "Fill Sand" material before the remaining rock aggregate is split into stockpiles. Coarse aggregate material from the 5 ' x 16 ' 3-Deck Screen will pass through Enclosed Splitter Chutes and be conveyed to one of Three New Stockpiles; 1 x #4 , 1 1/8 x 3/8, and 3/8 x /34 (20 hp, 20 hp, and 20 hp) . Additional proposed new equipment will allow the further processing of "clean sand" recovered from the Cyclones. This sand will be fed through a Sand Feeder (10 hp) to a Wemco #20 Attrition Machine (200 hp) which will break down and remove the less resistant sand particles, with the addition of water. The resultant sand slurry will be pumped (75 hp) through a Kolbera 8 x 28 Sand Classification System (15 hp) which includes a 8 ' x 32 ' Sand Classifier and a 44 ' x 32 ' Sand Screw (15 hp) . This material will be stockpiled as "cleanest sand" . 4 . 4 . 3 The Water System Water for the El Rancho Rock and Sand, Inc. Quarry operation is obtained from a water well . The quarry operates on a zero-discharge process-water recycling system. A complex of 6 settling and water storage ponds allow the recycling and reuse of much of the process water. The processing of the raw materials requires approximately 3600 gpm of water. Of this total, 2800 gpm is recycled water from the recycling ponds, and 800 gpm is "make-up water" provided from the on-site well. Figure 9 presents a water use flow diagram which illustrates movement of water through the process system. An anticipated 3800 gpm of water will be used when all plant upgrades 20 CONDOR