YOLO-SOLANO AIR QUALITY MANAGEMENT DISTRICT
RULE 2.20 - ORCHARD HEATERS
No new orchard or citrus heater produced or manufactured shall be sold for use in this District against frost damage
unless it has been approved by the State Air Resources Board in accordance with Section 31860 of the Health and
Safety Code. No person shall use any orchard or citrus heater after May 1st, 1974 unless it has been approved by
the State Air Resources Board or does not produce more than one gram per minute of unconsumed solid carbonaceous
material.