What is the procedure for sampling from a positive well?

When sampling from a well that has tested positive for contamination, the procedure involves taking two repeat samples to ensure accuracy and reliability of the results. The first sample should be collected within 24 hours of the positive test to quickly assess the situation and confirm the presence of any contaminants. Following that, a second sample is taken on the next consecutive day. This approach allows for the examination of trends in water quality over a short period and helps to determine whether the initial positive result was a one-time anomaly or indicative of a more serious ongoing issue.

Sampling within this timeframe is critical because it provides timely data for decision-making in addressing the contamination. Quick follow-up sampling allows for a better understanding of the well's condition and is essential for implementing appropriate remedial actions if necessary.