Pomona, CA Environmental Rules: Erosion Control (2026)
Key Facts
- Governing provision
- City Code § 74-31(a) adopts CBC Appendix J
- Subdivision erosion plans
- Planning Commission discretion under Zoning Code Sec. 1010.E
- First infraction fine
- Up to $100.00 (Sec. 1-7(d)(1))
- Misdemeanor maximum
- Fine plus up to 6 months county jail (Sec. 1-7(c))
- Subdivision improvement
- Erosion control structures required at final map (Sec. 1020.D.1.a)
- Enforcing agency
- Building Official and City Engineer
Summary
Pomona controls erosion and sediment at grading and excavation sites by adopting Appendix J of the 2025 California Building Code as its grading ordinance, enforced by the building official on every grading or excavation permit issued in the city. Subdividers face a second layer: the Planning Commission can also condition a tentative tract or parcel map on a dedicated grading and erosion/sediment control plan before acting on the map.
For the purpose of prescribing regulations for grading and excavations, Appendix J of the 2025 California Building Code is hereby adopted; the 1997 Uniform Code for Building Conservation-ICBO; the 1997 Uniform Housing Code-ICBO.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: City Code: Supplement 31).
Full Breakdown
Chapter 74 of the Pomona City Code adopts Appendix J of the 2025 California Building Code 'for the purpose of prescribing regulations for grading and excavations' (Sec. 74-31(a)), making Appendix J's grading and erosion-control standards enforceable citywide. The city administers Appendix J through the same building official who administers the rest of Chapter 74, applying it to erecting, construction, enlargement, alteration, and demolition activity, and Sec. 74-31(a) specifies that where California Code of Regulations and State Building Standards Code provisions differ from Pomona's construction codes, the state regulations control.
Subdivisions carry an additional, discretionary layer of erosion control review. Under Sec. ' Once a project reaches final map stage, Sec. a requires that 'grading, retaining walls, water, stormwater and sewer infrastructure, erosion control structures' be installed as subdivision improvements before the Planning Commission accepts the final tract or parcel map, alongside monuments, streets, street trees, and fire hydrants. All subdivision improvements must be built to plans approved by the City Engineer.
Violations & Fines
Pomona has no grading-specific penalty schedule, so Chapter 74 violations, including breaches of the Appendix J grading standards, fall under the citywide general penalty in Sec. 1-7. A first infraction draws a fine up to $100.00, a second within one year up to $200.00, and each additional violation within that year up to $500.00 (Sec. 1-7(d)). The City Attorney, City Prosecutor, or Los Angeles County District Attorney can instead charge a misdemeanor, punishable by a fine under Penal Code Section 19 and up to six months in county jail (Sec. 1-7(c)).
Frequently Asked Questions
Does Pomona require an erosion control plan for grading and excavation?
When can the Planning Commission demand a separate erosion/sediment control plan for a subdivision?
What happens if a Pomona grading project skips required erosion control measures?
Must subdivision improvements include erosion control structures?
Sources & Official References
Other rules in Pomona
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Erosion Control in Nearby Cities
How other cities in Los Angeles County handle erosion control.