The How to Higg Guidance specifically requires testing for Biochemical Oxygen Demand 5-day concentration (BOD5). The intent of the question is for facilities to demonstrate that the concentration of BOD5 in wastewater is being monitored. Testing for BOD3 does not meet the requirements outlined in the guidance. If they did not conduct at least one test for BOD5 in wastewater, No should be selected.
The user may refer to How to Higg Guidance (page 204) for more details.
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