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iii iiiiiiiiiiiu iii <br />999 <br />it bbon <br />. coal <br />company <br /> <br />JUN ~ 119Bg <br />i`gINED LAND <br />C~ECLARAA?(Oi~1 JIVIS;ON <br />blue ribbon coal company <br />p.o. box 1352 <br />palisade, Colorado 81526 <br />(303) 464-7951 <br />June 16, 1989 <br />Matthew 3. Hayes <br />Mined Land Reclamation Division <br />215 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203-2273 <br />Re: Semiannual Bench Hydrologic Monitoring <br />Permit C-81-047 <br />Dear Mr. Hayes: <br />The follow tables present the results of hydrologic monitoring on <br />the restabilized mine bench for the first and second quarter of <br />1989: <br />RESTABILIZHD BHNCH UNDHRDRAINS <br /> NORTH MIDDLE SOUTH <br />Date 3-22-89 3-22-89 3-22-89 <br />Flow (gpml 0.16 DRY 0.63 <br />Ph 7.5 --- 7.3 <br />Conductivity 2900 --- 4600 <br />Temperature 7°C --- 8°C <br />Date 6-15-89 6-15-89 6-15-89 <br />Flow (gpm) 0.02 Dry 0.12 <br />Ph 8.2 --- 7.4 <br />Conductivity 2700 --- 4600 <br />Temperature 20°C --- 18°C <br />BHNCH PIHZOMETHRS <br />P-1 P-2 P-3 P-4 <br />Date 3-22-89 <br />Depth to Water 5.7 <br />Date 6-15-89 <br />Depth to Water 13.1 <br />3-22-89 3-22-89 3-22-89 <br />Dry 34.8 25.7 <br />6-15-89 6-15-89 6-15-89 <br />Dry 35.3 25.0 <br />