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Mr. Gregg Squire , • Page 7 December 21, 2000 While there is no well permit for the property adjacent to the project site west property line, it is assumed that this house has a well due to its age. There is one spring adjacent to the Snyder ranch house. Item 25 -Augmentation plan. The operator intends on having an augmentation plan approved by the Office of the State Engineer prior to disturbing any groundwater. A copy of the approval letter will be forwarded to the Division's Denver office. Item 26 -Alluvial aquifer determination. -The table below contains information on the depth to groundwater based on test pits. Elevation, ft. Minin Area Surface Groundwater De th, ft West End 5326.47 5316.72 9.75 Slough to East Pro ert Line 5334.07 5326.32 7.75 5336.76 5330.76 6.00 5335.37 5328.37 7.00 5337.39 5330.39 7.00 5339.89 5331.89 8.00 West Pro erty Line to Horse Fence 5341.45 5334.45 7.00 5344.21 5332.21 12.00 5345.71 5338.71 7.00 These measurements in the above table were taken in December, 1999 using a tape measure. No water quality samples were taken. The elevations of the groundwater are below the surface of the Colorado River indicating that the gravel is an aquifer associated with the river. If the groundwater elevations were above the river elevations it would be indicative the gravel being recharged from a higher elevation. The shale layer below the gravel resource is assumed to be an aquatard. Conversations with the USGS and State Engineers office did not produce any information on groundwater aquifers for this area of Colorado. Using the USGS Gauging Station below Glenwood Springs, the Colorado River is expected to fluctuate from 1.07 feet to 8.89 feet above an assumed low flow gage reading of 3.60. This low flow value is from the first half of March, 1999. The average depth of peak flow above low flow is 4.74 feet. See attached Table G-4. Item 27 -Direction of flow for alluvial aquifer. -Based on Item 26, the groundwater flow direction and hydraulic gradient area expected to follow those of the Colorado River.