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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. <br /> The 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 <br /> Murphy 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 <br /> the 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 <br /> would have to travel 1200' to affect this spring. The ravine is heavily vegetated. There is currently a <br /> sediment pond located on the South side of the pit that collects run-off from the alfalfa fields south of the <br /> pit. The pit is on top of a ridge that self contains all storm water on site. The pit currently has ditching <br /> and catch basins in use to prevent any sediment or excessive erosion. No storm water flows or sediment <br /> from Wagner Rock Pit have ever affected the Murphy Spring or exited the disturbed area. Existing <br /> erosion control features will remain in place and maintained annually. This operation has no direct <br /> effect on surface or groundwater systems. The two water features, Murphy Spring and Barns Cistern <br /> have no history of affect from the original 110c permit and noted safeguards previously installed will <br /> serve to protect the features in future mining. No additional berms will be created on the north pit <br /> daylight. <br /> See Reference Map—Wagner Rock Pit Erosion Control Features <br /> The operation does not require National Pollutant Discharge Elimination System permit. <br />