What should be included with each soil and water sample during collection?

Including a written record of the sample collection with each soil and water sample is essential for several reasons. This documentation provides vital information about the context of the samples, such as the date and time of collection, the exact location, and any specific conditions or observations noted during the sampling process. This detail is crucial for laboratory analysis, as it ensures that the results can be accurately interpreted in relation to the environmental conditions at the time of sampling.

Additionally, a well-maintained record helps in maintaining the chain of custody for the samples, which is important for regulatory compliance and for validating the integrity of the sampling process. It enables traceability and ensures that all stakeholders involved in the analysis can reference the same information, thus helping to avoid any potential discrepancies or misunderstandings regarding the sample's origin or condition.

The other options, while potentially useful in certain circumstances, do not provide the same level of essential context and operational integrity as the written record does.