Which procedure is referred to as ITP2?

The procedure referred to as ITP2 is the "Sampling test procedure." This designation is part of the standardized methods used to ensure that aggregate samples are collected consistently and accurately, which is critical for quality control in construction materials and processes. Proper sampling procedures are essential for obtaining representative samples that reflect the characteristics of the entire batch of material being tested.

With this in mind, option C is valid because it directly aligns with the focus of ITP2, which emphasizes the methods used for sampling aggregates. This procedure is designed to guide technicians on how to collect samples in a way that adheres to established standards, thus ensuring that the data collected will yield reliable and actionable results for further testing.

Understanding the significance of proper sampling is crucial for technicians, as it influences the overall quality of the mixture, testing results, and consequently the integrity of the construction project. By following the Sampling test procedure, technicians can help mitigate issues related to variability and inconsistencies in aggregate characteristics.