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Sources: Zwick and Benstock, 1971; USDOI, 1970; Mitchell, 1976.

Sources: Zwick and Benstock, 1971; USDOI, 1970; Mitchell, 1976.

Figure 4-2 Location map of case study waterways and distribution chart of their before- and after-CWA mean tenth percentile DO for case study RF1 reaches: 1961-1970 versus 1986-1995. Source: USEPA STORET.
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