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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 />The ground water table below the 4.4 acre amendment area is 37'. This figure was pulled from the well <br />drilling information on permit number 220908-A. (see attached) The well was drilled on 3-09-2000 by <br />Ingram Drilling, Inc. The cross-section map #2 shows the elevations very close to the longitudinal <br />position of the abandoned well. The maximum depth of the excavation reached, as per the map, will <br />approach 42'. As the quarry process approaches this depth, at that longitudinal location 200' south of <br />the north border, we will not dig deeper than 30' to prevent exposure of ground water. Stone Wholesale <br />is acutely aware that it is not permitted to expose ground water and we will conduct the operation <br />accordingly.