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identified down dip from the roof falls that alloy measurement of the collected flov+s at a safer location. The tv+o recninmended monitoring points are in the ~1 tdest Sub t•1ain, Entry ~4, Stations 14+00 and 15+60. The preliminary measurements indicated a temperature of 9.9°c and 8.9°c and a pH of 7.4 and 7.8 at the tv+o respective monitoring sites. 3. The only measurable ground water inflov+ issuing from the mine wall occurred in the l ldest Sub plain, Entry "l, Station 23+20. A water sample taken from the wall had a temperature of 13.8°c and a pli of 7.6. The recommended monitoring point for tfre inflov+ described is at a collection point in tyre rtl l•Jest Sub Main, Entry .'.4, Station 20+40. 4. Seepage from the old mine workings east of the ;'1 florth plain is apparent from about the n7 cross-cut to cross-cut r14. A collection point for the flov+ seeping from the old mine workings was found in the ~l North Main, Entry 3, Station 27+g0. Preliminary measurements at that point indicated a pH of 6.45 and a temperature of 13.2°c. 5. A collection point for much of the ground water inflov+ is located in the North P4ain, Entry ,`-2, Station 27+80. The sump at this location is the point v+here accumulating vrater in the mine is pumped to the surface. Grand Mesa Coal Company currently monitors the total flov+ pumped and the average discharge rate has been 11 gpm. It is recommended that GMCC measure the water quality parameters at this location as well. Miscellaneous points that were observed to be wet, dripping, or v+here puddles were present are shaded in green on the !.line l•lorkings I.1ap. The monitoring points recommended above are numbered and shaded in red. Reconunended hloni tori nq Pr•ogr'am The following list is a summary o= the monitoring points reconmended as a result of the Plarch 25. 1982. underground mine ground v+ater inflow investigation. 10