How should “total area to be disturbed” on the NOI form be calculated for linear construction activity?
All disturbances to the ground must be accounted for and considered additive. The following formula attempts to account for all disturbances from the construction activity, not just the trenching activity itself: [Width of disturbance (including trench width) + Immediate access width] * Length of Projector pipe diameter + Areas where project-related activity (such as equipment and material storage) occur + (Bore hole diameter + Immediate access width) * number of bore holes = Total area to be disturbed This formula illustrates how to account for all disturbances to the ground resulting from the construction activity. Although dischargers are not required to use this exact formula, they must include all disturbances to the ground in their total calculation.
