On what list will all approved aggregate sources be documented?

The appropriate documentation for all approved aggregate sources is found on the Qualified Products List 2. This list is specifically maintained to ensure that only materials meeting the necessary standards and qualifications are used in construction projects. The use of this list allows for consistent quality control and assurance, which is critical in ensuring the safety and durability of infrastructure.

By having a designated list like the Qualified Products List 2, agencies can streamline the process of approving aggregate sources, as it clearly delineates which materials have been tested and verified against safety and performance criteria. This list serves as a reliable resource for engineers and contractors looking to procure materials that meet specific project standards.

While the other options may refer to lists containing materials or products, they do not specifically cater to the listing of approved aggregate sources as effectively as the Qualified Products List 2 does. For example, the Approved Materials List may include a broader category of materials beyond aggregates, and the Aggregate Quality Assurance List is more likely focused on the quality control measures rather than the sources themselves.