Vehicle Scale – Caltrans requires AC plants to have a vehicle scale located at the plant site. The vehicle scales are checked for accuracy at least once per year. The plant inspector may use a vehicle scale at any time to determine plant production rates or to verify tare and gross weights of trucks hauling AC mix.
Weighmaster – The following is a quote from the Business and Professions Code of California. “A weighmaster is any person who, for hire or otherwise, weighs, measures, or counts any commodity and issues a statement or memorandum of the weight, measure, or count which is used as the basis for either the purchase or sale of that commodity or charge for service.”
The plant inspector may check weigh any load he suspects to be in error. When weighing any vehicle, the entire vehicle must be on the scale at one time. If the plant inspector is aware of violations by a Weighmaster, the Department of Agriculture, Division of Measurement Standards should be notified at (916) 229-3000.
The 109 Sticker (Form HC-17) This sticker is affixed to all scale indicators or plant controllers once only after the calibration process, the plant operations and the safety inspection is approved by the District Weight and Measures Coordinator. The 109 sticker will indicate the approved rates the plant is allowed to run between and may include any span numbers used during the calibration process. The following is an example of what the Plant Inspector might see: