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of the water fits. As a result, excess water shows up at • location 10. To calculate total inflows the 1990 value for location 10 is used in the calculation to exclude excess water from location 5. Most of the inflows associated with location 2 were under water at the North fan seal. Location 22 was the pool of water at the north fan created as the water level rose behind the seal. The mass average pH for the mine inflows was 8.5 and the mass average conductivity was 900 umhos/cm. • The mine inflows from the Cameo Mine were all discharged to the surface. The water in the sealed No. 1 East Mains is drained at a variable rate, therefore, the higher flow calculated at Location 8 may not represent the actual inflows. As shown on Table 591-6, the inflows varied seasonally. The flows shown for locations 1 and 8 in the Cameo Mine appear to be the reverse of the 1990 flows. Errors are easy to make because location 1 is a difficult location to measure and location 8 is calculated. The mass average pH for the inflows study was 8.5 and the mass average conductance was 2921 umhos/cm. The average pH and conductance for the total discharge were 8.6 and 2633 umhos/cm. CONSUMPTIVE IISE A monthly listing of domestic water usage is shown on Table C91-1. Meter 1 supplies the buildings near the Roadside entrance gate. Meter 2 supplies the preparation plant and the Roadside office and bathhouse. Meter 3 supplies the Cameo facilities. The split between the surface facilities and the plant is not measured, therefore estimates are made. The leak repaired in the fall of 1940 shows up as lower surface facilities use than in the 1990 report. Mine water is used underground for dust suppression in the mining process and on roadways. Water usage underground is not measured, but is being estimated. The mine water is also used for process water in the preparation plant. The plant has a closed circuit for water but leaves the plant as added moisture in the coal and the refuse. As shown on table C91-1 the mine water usage in the plant was metered this year. The water added to coal during the mining process and the cleaning process can be roughly calculated from moisture levels at different stages of the process. The following information is used to make the calculation: - Measured equilibrium moisture 7.43$ - Measured raw tons 384,355 with an estimated moisture of 10$ - Measured clean tons, 210,929, with a measured moisture of 10.69$ - Estimated refuse tons, 192,000, with an estimated 18$ moisture i• The moisture added during mining calculates out to be 2.380