E. Multipond arrangement may be most suitable. 



F. Coagulant should be added to the water at inlet to each pond. 



REFERENCES 



Hall, E. P., and M. W. Kosakowski. 1976. Mineral Mining and Processing 



Industry. Development Document for Interim Final Effluent Limitations 

 Guidelines and Standards of Performance. Environmental Protection Agency, 

 Effluent Guidelines Division, Office of Water and Hazardous Materials. 

 Wash. , D. C. 452 pp. 



Monroe, R. G. 1973. Wastewater Treatment Studies in Aggregate and Concrete 

 Production. Environmental Protection Technology Series EPA-R2-73-003. 

 Environmental Protection Agency, Office of Research and Monitoring, 

 Washington, D. C. 108 pp. 



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