When does Risk Level 1 sampling have to occur?

When does Risk Level 1 sampling have to occur?

• A. When required for visible pollutants.
• B. During rainfall events only.
• C. When required for non-visible pollutants.
• D. Always.

Answer: (C)

Non-visible pollutants are the ones that you can’t detect by sight, so Level 1 sampling is used specifically when the permit requires monitoring for those pollutants. If the permit calls for Level 1 sampling for non-visible pollutants, you perform the sampling; otherwise you don’t. It isn’t about visible pollutants, it isn’t limited to rainfall events, and it isn’t automatically required in all cases.

Non-visible pollutants are the ones that you can’t detect by sight, so Level 1 sampling is used specifically when the permit requires monitoring for those pollutants. If the permit calls for Level 1 sampling for non-visible pollutants, you perform the sampling; otherwise you don’t. It isn’t about visible pollutants, it isn’t limited to rainfall events, and it isn’t automatically required in all cases.