Kirkwood, MO Environmental Rules: Erosion Control (2026)

The grading standards in Chapter 20, Article VIII apply to all grading in Kirkwood whether or not a permit has been pulled. Section 20-214(d) bars grading that causes or allows sediment to reach adjacent property, public streets, sidewalks, or a watercourse, and Section 20-214(f) requires interim siltation and erosion control devices to stay in place and functioning at full design capacity throughout construction until ground cover is reestablished; the Director of Public Services must approve the specific devices and procedures used. Grading plans submitted under Section 20-211 must show erosion and sediment control measures, dust control, drainage, and Metropolitan Sewer District review, sealed by a Missouri-licensed professional engineer.

Section 20-214(k) caps the finished and interim grade at no steeper than three horizontal to one vertical unless the permit specifically authorizes a steeper slope. Disturbing five acres or more triggers a separate land disturbance permit from the Missouri Department of Natural Resources under Section 20-214(g), on top of the city permit. The Director of Public Services can revoke a grading permit under Section 20-215 if the contractor fails to meet the approved schedule or the grading standards, and city inspectors have a right of entry under Section 20-216 to check compliance at any reasonable time.

Some grading is exempt from the permit requirement entirely under Section 20-212, including small landscaping berms under one foot high and under 100 square feet, and single-family construction already covered by a separate building permit.