Laserfiche WebLink
Construction, Inc. <br /> 1850 E. 1st. Street, Craig, CO 81625 <br /> Phone & Fax (970) 824-2709 <br /> WagnerCorp@q.com <br /> EXHIBIT G (6.4.7)—Water Information <br /> The excavation site is located at the highest point of a rock ledge and is considered a dry basalt operation. Site <br /> surveys do not indicate the presence of ground water within the permit boundaries. No tributaries, ponds, or <br /> ditches are affected. <br /> Mining activity affecting Murphy Spring <br /> The western side of the proposed permit boundary is about 275 feet from the Hall/Barns property line. The <br /> western extent of the affected lands is not being proposed to be expanded west any further. <br /> No blasting will occur at this pit. <br /> Closest disturbance from the proposed pit floor to the Barns Cistern will be 300' and 850' from the Murphy <br /> Spring. <br /> See reference Map—Murphy/Biscup Spring <br /> Ground water within the excavation areas <br /> No ground water has been encountered to date. Test hole was excavated to 60' experiencing an average <br /> moisture content of the in place material ranging between 7 and 10%which is consistent throughout the <br /> excavation. If ground water is encountered, the area will be backfilled 2' above that level and the office of the <br /> State Engineer and the Division will be notified. <br /> Sediment from Surface Water affecting the Murphy Spring <br /> The Murphy Spring is west of the pit boundary and is located in a ravine. Surface water from the permit would <br /> have to travel 1200' to affect this spring. The ravine is heavily vegetated. There is currently a sediment pond <br /> located on the South side of the pit that collects run-off from the alfalfa fields south of the pit. The pit is on top <br /> of a ridge that self contains all storm water on site. The pit currently has ditching and catch basins in use to <br /> prevent any sediment or excessive erosion. No storm water flows or sediment from Wagner Rock Pit have ever <br /> affected the Murphy Spring or exited the disturbed area. Existing erosion control features will remain in place <br /> and maintained annually. This operation has no direct effect on surface or groundwater systems. The two water <br /> features, Murphy Spring and Barns Cistern have no history of affect from the original 11 Oc permit and noted <br /> safeguards previously installed will serve to protect the features in future mining. <br /> See Reference Map—Wagner Rock Pit Erosion Control Features <br /> The operation does not require National Pollutant Discharge Elimination System permit. <br />