Fremont, CA Environmental Rules: Erosion Control (2026)
Key Facts
- Permit threshold
- 100 cubic yards of grading in 12 months
- Watercourse buffer
- 100 feet from top of bank triggers permit
- Clearing threshold
- 1 acre (or 10,000 sq ft on 10%+ slopes)
- Enforcing office
- City Engineer, Public Works Department
- Misdemeanor penalty
- Up to $1,000 fine or 6 months jail
- Rainy season defined
- October 15 through April 15
Summary
Fremont requires a grading permit from the city engineer before moving 100 cubic yards of earth, altering a watercourse, clearing an acre or more, or grading within 100 feet of a watercourse bank, under Municipal Code Chapter 18.205. Interim and final erosion and sediment control plans must retain sediment on site throughout construction.
No person shall commence or perform any of the following grading or clearing activities without first obtaining a permit from the city engineer authorizing those activities. A permit shall be required for: (1) Grading involving 100 cubic yards or more within a 12-month period; ... (8) Clearing of an area one acre in size or larger (excluding agricultural grading); (9) Clearing of an area greater than10,000 square feet with an average slope equal to or exceeding 10 percent (excluding agricultural grading); (10) Grading or clearing within 100 feet by horizontal measurement from the top of the bank of a watercourse, the mean high water mark (line of vegetation) of a body of water, or within the wetlands associated with a watercourse or water body.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 02-2026, passed May 5, 2026).
Full Breakdown
010). 030(a) requires a permit from the city engineer before grading 100 cubic yards or more of material in a 12-month period; before increasing or decreasing grade by more than 3 feet on land sloped 4 percent or less, or by more than 2 feet on steeper land; before clearing an acre or more (or over 10,000 square feet where the average slope is 10 percent or greater); before repairing a slide involving 100 or more cubic yards; and before grading or clearing within 100 feet of the top of a watercourse bank, a body of water's mean high-water mark, or associated wetlands. 020). 030(b)). 070). 100). 130, and may issue stop orders where conditions vary from what was approved.
Violations & Fines
Grading or clearing without the required permit, or failing to comply with a permit condition imposed under Section 18.205.130, is enforceable under the citywide misdemeanor/infraction provisions of Chapter 1.15: a misdemeanor conviction carries a fine of up to $1,000 and up to six months in county jail, while an infraction carries fines up to $100 for a first offense, $200 for a second within a year, and $500 for a third (Sections 1.15.010, 1.15.020). The city engineer can also issue stop orders and require summary abatement of hazardous conditions under Chapter 18.205.
Frequently Asked Questions
When does Fremont require a grading permit for erosion control?
Who prepares Fremont's required grading plans?
What happens if someone grades in Fremont without a permit?
Sources & Official References
Other rules in Fremont
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Erosion Control in Nearby Cities
How other cities in Alameda County handle erosion control.