From collecting soil and water in the field to processing them in the lab, environmental sampling is a precise science. Every step—from choosing the right tools to proper storage—can make or break ...

This chapter addresses the common practices and test methods (standards) that are used for certification programs for the basic material categories of soils and aggregate, asphalt mixture, and ...

The literature review presented in this chapter describes the DOT certification programs and how they were developed in different ways, in part due to the flexibility found in 23 CFR 637B. Included is ...