Question 2012 of 234 · California Wastewater Operator Exam
Typical secondary effluent limits for BOD and TSS under federal secondary treatment standards are
Exactly one answer is correct.
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Correct answer to question 2012
- C: 30 mg/L monthly average and 45 mg/L weekly average
Explanation
Federal secondary treatment regulations (40 CFR 133) set 30-day averages of 30 mg/L and 7-day averages of 45 mg/L for BOD5 and TSS, with at least 85 percent removal.
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