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Dust control needs - Dust control varies considerably throughout the year. Generally, <br />watering for dust control is only done for the 5 to 6 months of the year that it is driest, mainly late <br />spring, summer, and early fall. Once in a while watering is done during the winter on warm, dry <br />• days, but usually that is not necessary. Of course, in raigy weather and for a period after a good rain <br />no dust control is needed. The maximum amount of water needed for dust control is about 5000 <br />gallons per day. 'Phis water is supplied from the same source that supplies the washing process. <br />Sources of water - Water for washing, dust control, and possibly irrigation in the future <br />comes from wells that are owned by Transit Mix Concrete. Although there are three wells under <br />ownership and located on site, only one is used on a regular basis. That well produces, on the <br />average, about 750 cubic feet per minute. The water that supplies the well is apparently from the <br />aquifer located under the sand deposit. Thus, some of the water that is pumped back into the <br />operation is derived from the operation itself. Some of the water from the washing process settling <br />ponds, which are upstream from the well, seeps back into the ground and eventually makes it back to <br />the well. Furthermore, any water that is used in dust control that does not evaporate can also enter <br />the aquifer again, however that volume is probably so insignificant as to be unmeasurable. <br />NPDES: The necessary permits are being acquired, if not already acquired. <br />• <br />• Water Page G~ <br />