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Other <br />1. Compare monitoring results with discharge and water quality from NPDES permit; <br />Field QW as needed (c.g. extended time of dewatering )~ draw more water from <br />Mancos Shale (Se, TD5, etc. could be affected). <br />Post-Operation Monitoring <br />l . Water level data will define changes from initial "baseline". Lake evaporation of 50- <br />100 t gpmwill cause prrmanent water table draw down and increase salinity to some <br />degree in groundwater. Disrupted aquifer system, i.e. "infinite" permeability across <br />lake, with walls in contact with aquifer, will probably change groundwater Qow• <br />patterns and water quality. <br />NOTES: Well Construction -Truck-mounted Auger <br />1. If conditions permit, solid 5-6" auger could probably drill complete or 20' <br />hole in about 1-1 i4 hrs. <br />2. "Caving" condition would require Hollow-Stem Auger, probably would <br />require 1 '/, - 2 hrs. per hole, plus added sand and bentonite. <br />3. Well sites must be protected from operations, and have ready access provided <br />for monitoring. 'fhe wells in the mined area will be lost as mining <br />progresses. <br />4. Wells will be logged for hydrogeologic characteristics. T'he grain size <br />descriptions (clay, silt, sand, gravel) will be noted for correlation with the <br />existing Lincoln-DeVore logs. <br />ReCelved <br />r'WR l' / . ~ ~I', <br />Orend Junction Fleld 0 <br />Division of Mu~t~ ~, . i G <br />