Rancho Cucamonga, CA Environmental Rules: Erosion Control (2026)
Key Facts
- Governing section
- RCMC § 15.12.140 (Appendix J110.3)
- Applies to
- All grading operations, any lot size
- Duty holder
- The permittee
- Enforcing agency
- Building and Safety Department
- Last amended
- Ord. No. 1048, Nov. 19, 2025
Summary
Rancho Cucamonga requires every grading permit holder to actively prevent erosion, flooding, and mud or debris deposition onto adjacent property throughout construction. The duty applies regardless of lot size and runs for the full length of the grading operation, per Municipal Code Section 15.12.140.
Section J110.3 is hereby added to read as follows: J110.3 Temporary erosion control during grading work. The permittee shall put into effect and maintain all precautionary measures necessary to protect adjacent watercourses and public or private property from damage by erosion, flooding, and deposition of mud or debris origination from the site during the grading operation regardless of lot size.
Full Breakdown
3 to Appendix J of the adopted California Building Code, creating a standalone temporary erosion control duty for grading work within city limits. The permittee, not just the grading contractor, must put into effect and maintain all precautionary measures necessary to protect adjacent watercourses and public or private property from damage by erosion, flooding, and deposition of mud or debris originating from the site. 160 (Appendix J113) requires dust control measures and a posted dust control sign before permit issuance. 120. These erosion, drainage, and dust provisions were most recently carried forward and amended by Ordinance No.
1048, adopted November 19, 2025, following the 2016 (Ord. 899), 2019 (Ord. 956), and 2022 (Ord. 1011) code adoption cycles. , cuts under 2 feet or fills under 1 foot) remain subject to the general prohibition on causing erosion damage to neighboring property or public infrastructure.
Violations & Fines
Failure to maintain erosion control measures during grading is enforced by the Building and Safety Department as a code violation tied to the grading permit; the city can issue stop-work orders on active grading and require remediation of any sediment or debris that reaches adjacent property or watercourses. Continuing erosion damage to a neighboring parcel or public drainage course can also be pursued as a nuisance abatement matter separate from the permit violation.
Frequently Asked Questions
Who is responsible for erosion control on a Rancho Cucamonga grading site?
Does the erosion control rule apply to small residential lots?
What related grading requirements come with erosion control?
Sources & Official References
Other rules in Rancho Cucamonga
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Erosion Control in Nearby Cities
How other cities in San Bernardino County handle erosion control.