What is one key piece of information that should be recorded during sampling?

Recording a sketch of the site with sample locations during sampling is vital for several reasons. This visual representation not only helps in understanding the relationship between various sampling points but also assists in analyzing data later on by providing context to the locations where samples were taken. A sketch can indicate the sampling strategy employed, the proximity of potential sources of contamination, and any variations in the environment that may affect the results.

Additionally, having a clear map of sample locations allows for reproducibility in future sampling events and can be essential in compliance with regulations or for any follow-up investigations. It serves as a crucial reference for data analysis, aiding in identifying trends or anomalies linked to specific site features.

Other pieces of information, such as weather conditions or the time of day, are useful but do not provide the comprehensive spatial context that a site sketch does. The name of the previous owner, while potentially relevant for historical context, is less critical when focusing on the immediate sampling process and spatial data collection.