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BROWNSTONE 2015 STATE EXHIBIT G <br />WATER INFORMATION <br />Stone Wholesale, Inc. currently works under CDPS General Stormwater Permit COR -34 -1454. <br />The amendment area is not expected to directly affect surface or groundwater systems. The Stormwater <br />Plan has been in operation with no problems since 1997 when DRMS mining permit M- 065 -1997 was <br />issued. The plan worked well in the recent September of 2013, 500 year flood and is expected to <br />continue to function within the parameters of the Plan. The plan uses retention /detention areas which <br />are the results of the Brownstone excavation process. Stormwater is held in these areas until the water <br />leaches through the ground below or evaporates away. A backup plan is proposed for this amendment <br />consisting of a 4' to 5' high X 350' long earthen berm placed along the southwest border of the <br />disturbed land. This border is the lowest elevation of the amendment and borders the north side of the <br />Larimer County Canal. The berm would retain any water in the event of the Stormwater Plan failure. <br />Water used for cooling and lubrication of the stone saws is taken from the well on site. The Colorado <br />Division of Water Resources issued well permit number 286460 on 8 -15 -2011. The annual use of water <br />from this well is less than 50,000 gallons. The saws are inside buildings so the loss from wind and <br />evaporation is minimized. <br />