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Discharge point 001 is also used to dewater the Roadside Mine. • The discharge line froze in January 1991, and was not repaired until September 1991. Only enough water was pumped from the mine to satisfy the requirements of the preparation plant while the discharge line was not in service. Dewatering of the Cameo Mine continued all year from discharge point 004. Tables 591-5 and 591-6 summarize the monthly discharge from these points and data pages SD-4, SD-5, SF-7 and SF-8 list results of weekly sampling at these sites. A summary of the average quality of the water discharged during the year is as follows: Point pH TDS TSS TFe Discharge 001 8.43 786mg/L <10mg/L 0.07mg/L 4.10 MG 004 8.29 1615 <10 0.17 55.66 GROUND WATER The ground water monitoring points located on Cottonwood and Rapid Creeks were monitored twice during the year. Results of the monitoring are listed on data page GA-1. The following is a comparison of this year's readings with the average depth to water for the previous 5 years. Location May '91 May Ave. Sept '91 Sept Ave. • GWMS-OlA 5.3 5.8 6.4 6.9 -O1B 6.7 7.3 8.0 8.5 -02A 18.3 16.9 18.8 17.7 -02B 15.2 17.5 22.4 22.0 -03A 11.1 10.3 11.2 11.6 - -03B 9.6 8.9 10.8 10.5 The water level in these piezometers did not correlate with flow in adjacent creeks as well as it has some years in the past. GWMS-O1 showed higher than average water levels while the adjacent SWGS=01 flume showed lower than normal flows. GWMS-02 and 03 showed lower than normal levels while SWGS-02 showed lower than normal flow and SWGS-03 showed near normal flow. Piezometers on the Cameo Refuse Disposal Area No. 1 were monitored quarterly. Results of this monitoring is given on data pages GC-2. The following is a listing of the average water elevations since 1984: Water Year CRDA-01 CRDA-02 CRDA-03 1984 4866.4 4854.2 4863.3 1985 4865.1 4853.0 4860.5 1986 4864.9 4854.4 4863.2 1987 4863.9 4855.6 4863.9