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The successful application of high‐rate pretreatment and filtration processes in an 80‐mgd water‐treatment plant in California demonstrates that turbidity goals established by AWWA can be economically achieved. During 1971 the Ralph D. Bolfman Plant was granted certification by the California Dept. of Public Health to operate at 10 gpm/sq ft after proving exceptional continuous efficiency for 2 yr.
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Brian G. Stone (1972) studied this question.
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