Rialto, CA Environmental Rules: Erosion Control (2026)

12, Excavations and Fills, governs grading citywide and ties erosion control directly to the permit process. 050, no person may grade land without a permit from the development services department, with each permit valid for up to one year and voided if work stalls for ninety days. 060 exempts only minor work: cuts or fills under one foot, basement or pool excavations already covered by a building permit, city reclamation sites, permitted street work, and emergency work. 080(E), Stabilization of Material: no excavation or embankment can be made until the slopes and graded area are protected from wind erosion after grading is finished, using planting, paving, or another method the city engineer approves.

The same section requires drainage to be carried to the nearest street, storm drain, or natural watercourse without endangering health or safety, bars filling or restricting a natural watercourse until adequate drainage is designed and approved, and mandates a five-foot terrace with a lined gutter on fill slopes over thirty feet or on cut slopes where a soils engineer's report calls for it. 070 requires the grading application to include contours, drainage devices, and runoff estimates from a civil engineer, plus a soil engineering report and an engineering geology report.

130 lets the city engineer condition a grading permit on time limits, restricted working hours and days, and designated haul routes for loads over five hundred cubic yards. 180 requires the permittee to provide dust-laying equipment to protect adjacent properties. 190(B), final inspection cannot be approved until all drainage facilities, their protective devices, and all erosion control measures are complete per the approved plan. 200 then shifts maintenance of slopes, retaining walls, cribbing, and drainage structures onto the property owner permanently after the work is done.