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~~ <br />cAr~o MINE LNFLOws <br />SEPTEMBER 26, 1990 <br /> Flow pH T~mp Cond <br />Location Description GPM Su C umhos/cm <br />1 Portal excavation subdrains - flow 67.5 8.1 16° 2100 <br /> pumped from portal sump. <br />2 No. 1 North Mains Return - small 0.8 8.1 160 3600 <br /> inflows from roof floor and ribs in <br /> incline. <br />3 No. 1 North Mains Return at 12+00 - 6.2 8.6 16° 3400 <br /> flow from location 2 plus small <br /> inflows from floor, roof and rib. <br />4 No. 1 North Mains Intake at 37+00 - 6.2 9.2 14° 4000 <br /> small inflows from roof, floor and <br /> rib below Location 3. <br />5 No. 1 North Mains Belt at 37+00 - 0.5 9.3 14° 4000 <br /> small inflows from floor and rib. <br />• 6 No. 1 West Mains Intake at 2+00 - 6.2 9.0 14° 2700 <br /> flow from Location 7 plus small <br /> inflows from floor, roof and ribs. <br />7 No. 1 West Mains Intake at 40+00 - 0.8 9.1 14° 1750 <br /> inflows from floor, roof and ribs at <br /> the west end of No. 1 West Mains. <br />8 No. 1 East Mains Seals - drained at 40.9* 8.3 160 3400 <br /> variable rate. <br /> Total Measured Inflows (location 1+3+4t5+6+8) 127.5 GPM <br />* Flow calculated from average September discharge minus measured flows. <br />Table M90-1 <br />