Collection Systems Operator’s Guide to Preparing for the Certification Examination (WEF) (Levels 1-4) OIT This guide is not a

This guide is not a replacement for comprehensive training programs

operator math and chemistry

Class 1 & 2

California

is organized into 13 chapters addressing core test content on certification exams

Collection Systems Operator’s Guide to Preparing for the Certification Examination (WEF) (Levels 1-4) OIT This guide is not aThis guide was prepared jointly by the Water Environment Federation, the Association of Boards of Certification, and the Certification Commission for Environmental Professionals (C2EP). The third edition of this critical study guide has been updated to reflect new Need to Know Criteria and core competencies for collection system operators. The questions included in this guide have been chosen to sample as many different aspects of a collection system