Tennessee Wastewater Operator Practice Exam

What is the analysis frequency for assessing pollutants in biosolids based on disposal metrics according to 503 regulations?

1. Once a year for all amounts

2. Monthly for greater than 15,000 metric tons

3. Four times a year for 290 to less than 1500 metric tons

4. Once every two years for less than 290 metric tons

The correct answer is: Four times a year for 290 to less than 1500 metric tons

The correct answer notes that the analysis frequency for assessing pollutants in biosolids is four times a year for amounts between 290 and less than 1,500 metric tons. This frequency is established within the context of the 503 regulations, which set specific guidelines for monitoring and managing biosolids used in land application to ensure they do not harm public health and the environment. Under these regulations, the frequency of analysis is designed to reflect the quantity of biosolids produced and managed. Monitoring four times a year provides adequate coverage to track variability in pollutant levels, addressing potentially fluctuating conditions that can occur in biosolid treatment processes. This frequency is also consistent with the need to ensure that those quantities of biosolids that are land applied comply with pollutant concentration limits and maintain acceptable standards for reuse. The tiered approach to analysis frequency based on quantity is aimed at balancing practical monitoring efforts against the risk factors associated with contamination. In contrast, the other options outlined do not align with the requirements specified in the regulations. Regular analysis for smaller quantities (such as less than 290 metric tons occurring once every two years) does not provide sufficient frequency to capture potential variations in pollutant concentration effectively, while the monthly requirement for larger quantities (greater than