Irving, TX Environmental Rules: Erosion Control (2026)

1, no person may perform or permit earthwork within the city without first securing an earthwork permit; it is an affirmative defense that the work is on a lot under one acre with an existing single-family home, or is done under an active building permit that already complies with grading, erosion control, and stormwater discharge rules. 2 must submit, for any work disturbing five or more acres, a copy of an approved EPA stormwater permit accompanied by a stormwater prevention plan prepared by a registered engineer, plus two sets of scaled plans showing proposed erosion control construction, site contours, drainage devices, and any protected tree under the zoning ordinance's tree preservation section.

3). 5 requires fill sites to be leveled and covered with a minimum six inches of topsoil that will support vigorous plant growth immediately after filling, or covered at intervals not exceeding thirty days for filling operations that run longer than that; the director may approve an alternative erosion-resistant cover instead. 6 is the core erosion-control mandate during construction: no one may place fill without preparing and maintaining the faces of cut and fill slopes against erosion using effective planting, check dams, cribbing, riprap, or other devices, done as soon as practicable and before requesting the final inspection; it is an affirmative defense that the cut slopes are erosion-resistant by their material character.

4 requires the permittee to notify the department when grading is ready for final inspection, and the director will not approve the work unless all drainage facilities, protective devices, and erosion control measures are complete per the approved grading plan.