Sahuarita, AZ Environmental Rules: Erosion Control (2026)

010(H)(1) requires permanent drainage control systems on every graded site: erosion control must be constructed and maintained to prevent erosion of slopes and of areas that have been cleared, brushed, grubbed or graded, all in accordance with the town's grading design manual. The town engineer can waive that requirement only where cut slopes are not subject to erosion because of the erosion-resistant character of the native material. Beyond slope stabilization, the town can require erosion control devices to stop erosion or sediment from reaching off-site property, and paved public or private roadway shoulders must be protected against erosion wherever curbing or constructed spillways are absent.

The same section requires surface drainage for cut and fill slopes to protect stability and affected properties, surface drainage interceptors at the top of cut and fill slopes wherever there is runoff and erosion potential, and drainage slopes to protect building foundations, all again measured against the grading design manual. Subsurface drainage can also be required where ground-water seepage threatens stability. 010(B) separately requires any graded area not built on or revegetated within 60 days of a grading permit's expiration to be revegetated or stabilized, restoring the native vegetative community if the grading permit's purpose was not met. 80. 010(C)(2); paying a fine does not excuse finishing the erosion-control work.