Laserfiche WebLink
water regime if huge amounts of water fell as precipitation and this water was needed as surface water <br />downstream. This is not the case. There is also an added benefit to the depression. For very lazge <br />runoff events, the depression will capture excess floodwater and prevent damage to azeas east and <br />north of the site and preventing erosion of the slope between the Spring Creek Mesa and the lower <br />terrace. <br />9) Perhaps the most prominent data comes from the 8 water monitoring holes which were installed in <br />January 2004, through Wildcat Drilling and Pump, Inc. of Cedaredge. All of the holes confirmed the <br />thickness of the gravel in Phases Al through A4 of 57-64 feet. South of Phase 10, the gravel is 36 feet <br />deep, as shown by Well W-A8, which was added at the discretion of the operator and not part of the <br />approved well sampling plan. Well W-A7, drilled at the extreme southern end of the property, shows <br />no gravel at all. The other 7 wells, W-Al through W-A7, were part of the original plan and were <br />installed to bedrock as planned. <br />A revised Map C-1B -Pre-Mining Plan Map shows all well locations and basic log information. <br />Detailed logs are found in Appendix B. <br />Irrigation water was delivered to the site and surrounding area during the third week of April, <br />2004. Since that date, water levels have been monitored weekly at Piezometer wells 1 through <br />4, which surround the area that current mining is taking place. Mining started in the Phase Al <br />area (Under the 2003 DMG Permit) during the third week of May, 2004. <br />The last weekly monitoring report at the time of the submission of this Ammendment was <br />made on June 28, 2004. See monitoring results in Appendix B. These results show that water <br />levels have risen only slightly, as predicted from the very beginning. The irrigation has been in <br />place for approximately 68 days when the June 28 data was taken. This is more than enough <br />time for the water to reach its approximate high level, given the porosity of the gravel from <br />previous tests and given the small recharge area draining under the Haldorson Sand and Gravel <br />Mine. <br />Haldorson Sand and Gravel Mine 37 <br />