Online ExclusivesTreatment Plant Operator Exam Study Guide Answers

Treatment Plant Operator Exam Study Guide Answers

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Here are the answers to the March 9, 2023 edition of TPO's Exam Study Guide:

According to U.S. EPA Part 503 regulations, which type of sludge may be used as soil amendment and/or fertilizer for growing various crops (with some restrictions)?

The answer to the question is C,...

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