Farmington Hills, MI Environmental Rules: Erosion Control (2026)

Sec. 33-320 adopts Section I of the Oakland County Water Resources Commissioner's Stormwater Engineering Design Standards, as amended, as Appendix B to the city code, and Sec. 33-321 substitutes 'City of Farmington Hills' for every reference to 'OCWRC' or 'County' in the standards, so the erosion-control requirements bind the city directly. ' Designers must expose the smallest practical area of raw land at one time, keep any exposure to the shortest practical period, use temporary vegetation or mulching on critical areas during construction, install permanent vegetation and structures as soon as practicable, and fit the development plan to the site's topography and soil type to minimize erosion potential; natural vegetation should be retained wherever feasible.

Appendix B, Section II, Part B further requires subdivision plat applicants to submit plans and details of the temporary and permanent soil erosion and sedimentation control measures, identify who maintains them, and obtain a soil erosion and sedimentation control permit under Part 91 of Act 451 of the Public Acts of 1994 before the WRC approves final construction plans. BMP locations must be protected during construction, including stabilizing surfaces next to BMPs and installing temporary erosion and sedimentation control structures at BMP outlets, and before final acceptance the WRC confirms there are no outstanding soil erosion issues or history of poor soil erosion practices by the developer.