APPCOR10340 - Laserfiche WebLink

Home Browse Search

e Mr. Dan P4atthews Page No. 4 October 29, 1981 Calcium Copper Chloride Lead Fluoride Plercury Manganese Molybdenum Nitrate/Nitrogen Nickel Phosphorus Selenium Potassium Zinc An analytical interpretation of these parameters will be made to predict any possibility of acid or toxic-forming materials. General Hydrology As we discussed, both the area planned for new surface support facilities and portions of the "B" and "C" Coal Seams have been previously disturbed and mined. Because of the past mining and disturbance to the area, virgin hydrologic conditions do not exist. Regardless, no water has been flowing from the abandoned portals of the previous mining. On a recent inspection of the underground workings, no water was found. Since the mine had been active since 1934 and the coal dips upward away from the portals, any disruption of current hydrologic regime would have been noted. Likewise, any groundwater encountered would certainly have drained from the mine especially since the mine was opened in 1934. Bear Coal Company will plan to install one alluvial well in the vicinity of the surface support structures. No disruption of the groundwater regime is expected in this area because there is no subsurface disturbance. However, the Colorado P1ined Land Reclamation Division feels that one well would point out any potential disruptions caused by surface facilities. Alluvial Valley Floors The Colorado Mined Land Reclamtion Division stated that no alluvial valley floors existed in the vicinity of the Bear No. 3 Portals. Further downstream of Somerset, where the river valley widens, the Division has determined that there is an AVF. No impacts on the AVF are anticipated by the relocation of the Bear support facilities. Waiver From Nearby Residents Because of the proximity of the Bear fdo. 3 Portals and surface facilities to the Town of Somerset, a waiver from nearby residents will be received for inclusion in the upcoming permit revision. A Q ~ ure.