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Relevance

Air quality conditions in the Lake Tahoe Region can affect human health, visibility, forest health, and the clarity of Lake Tahoe. Motor vehicle emissions are one of the primary factors influencing air quality conditions. To address environmental and human health concerns from vehicle emissions, specifically fumes attributed to diesel engines, TRPA adopted ordinances in 1987 that regulate motor vehicle “odor” in the basin. According to the odor policy statement, “...it is a policy of the TRPA Governing Board in the development of the Regional Plan to reduce fumes from diesel engines to the extent possible.”

Human and Environmental Drivers

The main concern of TRPA when It comes to odor is the odors caused by vehicles, especially exhaust from diesel vehicles.

Management Status Rationale

Implemented. The odor threshold standard was determined to be implemented. A review of the current adopted policies, ordinances, and rules of TRPA, state and federal agencies has found support of the policy statement. These agencies have adopted policies and measures that address diesel odor. However, because no monitoring occurs, it is not possible to say whether or not these policies, ordinances, and rules are having their intended effect.