September 7, 1978COMMONWEALTH EDISON CO., ) Petitioner, ) v.
) PCB 78-71
) ENVIRONMENTAL PROTECTION AGENCY, ) Respondent.
Therefore,
all data referred to in this opinion are found in Petitioner’sreport and it is the sole basis for the Board’s determinationunder Sec.
7-10).
Comparison of average
river flow with plant cooling water flow during repeated 24-hourperiods throughout the year (see Table 3) showed that less thansix percent of the Rock River was utilized in the cooling systemover the test year, with a quarterly mean of le...
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