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Any groundwater supplied from strata with the potential to be affected by the proposed operations is probably minimal. No major aquifers have been identified in either the coal seas or the overburden. Springs in the area are associated with Zeno cular sands, local faulting and fracturine, aid landslides. Most e_` tine sprints in or adjace.^.t *_o the ~-_-__ ___.._*____a are located along S_.:_ster Gu_'a; _ - .~. _.d.~.: ~__c~ .-- ~- t:-is ..atershed would be subject to subsidence, sores o= t.'^.ese spr--gs ____. dry up. However, these sari..=.gs, :, hi c'^. supply less =..~. _.. __ _.._ ___„ _.. Sylvester Gulch, are currently used as a eater source for _.._ cng .~e__- Pipeline. Loss of this water would not significantly decrease the water supply to the alluvial valley floor. No degradation in groundwater quality is anticipated. During mining, the applicant anticipates consuming all the groundwater that collects in the mine for dust control and coal processing within the mine, thereby producing no mine discharge. Following mining, new springs, fad by water supplied by the accumulation of water in the underground workings, could form. At present it is not possible to predict the water quality of these springs. However, they would be such a minor contribution of the water supplied to the alluvial valley floor, no degradation of water quality in the alluvial valley floor is anticipated. 3. Surface coal mining and reclamation operations would be conducted to preserve, throughout the mining and reclamation process, the essential hydrologic functions of alluvial valley floors not within ttie affected area (Rule =.24.2). None of the proposed mining activities are located within the alluvial valley floor and the natural geologic and hydrologic characteristics of the valley floor would not be disturbed. In addition, mining operations are not expected to effect the quantity and quality of surface and groundwater that supply the alluvial valley floor. Alluvial Valley Floors - Monitoring (Rule 4.24.5) The applicant's normal surface water and groundwater monitoring along with the U.S. Geological Survey monitoring at Somerset is sufficient to monitor the effects to the essential hydrologic functions of the alluvial valley floor. The applicant has not proposed a method to monitor the agricultural utility and production on the alluvial valley floor. 2 Stipulation: [9ITHIN SIX MONTHS OF THE PERMIT ISSUING, THE APPLICANT SHALL SUBMIT A PLAN FOR THE MONITORING THE AGRICULTURAL USAGE AND PRODUCTIVITY OF THE ALLUVIAL VALLEY FLOOR IDF,NTZFIED ABOVE. THE MONITORING PLAN SHALL GO INTO EFFECT DURING THE 1982 GROFIING SEASON. ~l Stipulation: IN ITS ANNUAL HYDROLOGY ASSESSPIENT, THE APPLICANT SHALL INCLUDE FIATER QUANTITY AND QUALITY DATA FROM THE U.S.G.S. SOMERSET MONITORING STATION. SHOULD THE U.S.G.S. DISCONTINUE MONITORING AT THIS LOCATION, THE OPERATOR SHALL SUBAfIT ITS OLdN QUALITY AND QUANTITY MONITORING PROGRAh1 FOR THE NORTH FORK OF THE GUNNISON.