When must perimeter controls be installed during construction activities?

Perimeter controls are critical measures designed to prevent sediment from leaving the construction site and minimize erosion. The correct timing for their installation is before mass grading commences, which is essential to manage potential erosion risks right from the start of the land disturbance activities.

Installing perimeter controls before mass grading ensures that any sediment that may be disturbed during grading operations is contained on-site. This proactive approach helps to protect adjacent water bodies and ecosystems from sedimentation, adhering to environmental regulations and best management practices outlined in the Maryland Erosion and Sediment Control guidelines. Effective erosion and sediment control is rooted in preventative measures, making the timing of these installations vital for the success of such practices.

While it is essential to have these controls in place throughout the project, waiting until mass grading has started or only installing them based on weather conditions like rain can lead to significant environmental damage. Thus, the emphasis on installation before grading reflects an understanding of proactive erosion and sediment control management.