Glenn County, CA Environmental Rules: Erosion Control (2026)

060, part of the Performance Standards chapter in Title 15's Unified Development Code, applies erosion control standards to all development projects in commercial or industrial zoning districts in unincorporated Glenn County. Builders must expose the smallest practical area of land at any one time and keep any exposure to the shortest practical period. Natural features such as trees, groves, natural terrain, and waterways must be preserved where feasible rather than cleared outright. Temporary vegetation or mulching is required to protect critical areas left exposed during grading and construction, and permanent final vegetation and structures must go in as soon as practical once work is underway.

The code directs that development be fitted to the topography and soils wherever feasible to create the least erosion potential, and requires provisions to accommodate the increased runoff that changed soil and surface conditions produce during and after development. Where needed, sediment basins, debris basins, desilting basins, or silt traps must be installed and maintained to remove sediment from runoff waters coming off land undergoing development. 020, which lets the planning director demand technical reports from a qualified consultant before ministerial or discretionary approval. 060 is written for commercial and industrial districts, residential grading in unincorporated Glenn County is reviewed instead through the county's general grading and building permit process rather than this specific standard.