1.1 This guide is intended to assist the laboratories that analyze environmental samples with the development of a documented training program. The training program should develop and increase the competence of analysts and provide a means of recording the results of all proficiency testing.

1.2 Some of the functions within a laboratory that can be addressed using this guide are as follows:

1.2.1 Analysts,

1.2.2 Technicians,

1.2.3 Quality assurance (QA),

1.2.4 Sample receiving and control, and

1.2.5 Sample procurement (sampling).