Certified Storm Water Operator Practice Exam

In the context of Stormwater Erosion and Sediment Control (SESC) measures, it is essential that they are both installed and functional before any earth changes begin. This ensures that the measures can effectively prevent sediment and pollutants from leaving the site and entering waterways. When SESC measures are implemented before any earthwork, they can immediately start capturing and managing sediment during the initial stages of construction, which is critical in reducing the risk of erosion and protecting water quality.

Having functional measures in place means they are capable of addressing potential runoff issues efficiently. This proactive approach is vital in compliance with environmental regulations and helps avoid costly remediation efforts later. Therefore, emphasizing the importance of these measures being installed and operational prior to any ground disturbance reinforces best management practices in construction site runoff management.

While measures being functional and efficient, tested and approved, or documented and maintained are all important components of an effective SESC program, they do not specifically address the critical need for installation and functionality before earth changes take place.