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Truckee, CA Environmental Rules: Erosion Control (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Wet season
October 15 through April 30
Stabilization deadline
48 hours before wet weather
BMP inspection
Every 24 hrs in storms over 48 hrs
Wet-season grading
Prohibited absent a variance
Variance disturbance cap
Under 10,000 square feet
Enforcement agency
Town of Truckee Code Compliance
Cease-and-desist window
72 hours after notice

Summary

Truckee's Stormwater Quality Ordinance requires year-round erosion control BMPs on every construction site and bars new ground disturbance outright during the wet season, October 15 through April 30, unless the Community Development Director or Town Engineer grants a written variance.

B.Wet Season and Emergency Site Stabilization1.All sites shall be stabilized, year round, with specific BMPs to control erosion and protect water quality 48 hours prior to a wet weather event or as requested by the Director/Engineer. ... 2.All soil-disturbing activities shall cease when wet weather conditions exist, unless it is deemed an emergency or otherwise exempt. Adequate temporary erosion control measures shall be installed prior to a wet weather event.3.The responsible party shall field check temporary BMPs prior to storm events, immediately after storm events, during storm events longer than 48 hours, and weekly. ... BMPs shall be inspected every 24 hours during extended storm events.4.Winterization of sites shall be made prior to the wet season. ... All BMPs shall be inspected for winterization and proper function prior to October 15.5.Ground disturbance that falls subject to the Town's grading requirements, including vegetation removal that disturbs soil, shall be prohibited during the wet season ... unless a variance is approved as outlined below.

Full Breakdown

Title 11 of the Truckee Municipal Code, the Stormwater Quality Ordinance, governs erosion and sediment control on construction sites. 010(B), Wet Season and Emergency Site Stabilization, requires every site to be stabilized with erosion-control BMPs 48 hours before a wet weather event, requires soil-disturbing work to stop once wet weather arrives, and requires the responsible party to field-check temporary BMPs before and after every storm, weekly, and every 24 hours during storms lasting more than 48 hours. Sites must be winterized before the wet season begins, with all BMPs inspected for proper function no later than October 15.

010(B)(5) goes further: any ground disturbance subject to the Town's grading requirements, including vegetation removal that disturbs soil, is prohibited outright during the wet season unless a variance is approved. A wet-season variance is available only for low-erosivity sites: slope under 10 percent, more than 250 feet from a waterbody or watercourse, disturbed area under 10,000 square feet, and a favorable 10-day forecast; commercial variances run 10 days at a time, renewable. 010(C) adds temporary-measure requirements during construction itself, including silt fences, waddles, tackifier on stockpiles, and dust control, all of which must stay in place until the site is permanently stabilized. 040(E) showing BMP locations and installation details. 050(M).

Violations & Fines

A violation of Title 11 is declared a public nuisance under Section 11.01.030 and Government Code Section 38771. The Town Manager may issue a Notice of Violation under Section 11.06.020 ordering violations to cease within 72 hours and remediation completed within 30 days, plus a fine under Section 1.03.120. Orders become final in 21 days absent a timely appeal under Section 1.03.060.

Frequently Asked Questions

When does Truckee's wet season restriction on grading apply?
The wet season runs October 15 through April 30 under Section 11.01.050. During that window, Section 11.04.010(B)(5) prohibits ground disturbance subject to the Town's grading requirements, including soil-disturbing vegetation removal, unless a variance is approved in advance.
Can I still grade my lot during Truckee's wet season?
Only with a written variance from the Community Development Director or Town Engineer. The site must have a slope under 10 percent, sit more than 250 feet from a waterbody, disturb less than 10,000 square feet, and have a favorable 10-day forecast; commercial variances are granted for 10-day periods at a time.
How often must erosion control measures be checked during construction?
Section 11.04.010(B)(3) requires the responsible party to field-check temporary BMPs before and after every storm event, weekly, and every 24 hours during storms lasting longer than 48 hours, with maintenance and repairs completed promptly.
What happens if a Truckee construction site violates the erosion control rules?
The violation is deemed a public nuisance. The Town Manager can issue a Notice of Violation requiring the discharge or practice to stop within 72 hours and site restoration within 30 days, plus recover administrative and remediation fines under Section 1.03.120.

Sources & Official References

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