ARIZONA DEPARTMENT OF WEIGHTS
AND MEASURES
Ensuring Equity in the Arizona Marketplace
Fueling Devices
In Arizona an estimated 2 billion gallons of gasoline are pumped every year. As a business that uses fueling devices there are quite a few things to know.  This page will touch on a few of the requirement including:
 
  • the sale and dispensing of motor fuel
  • signage and labeling requirements
  • volume testing
  • diesel fuel rebates
 
Sales, Heating and Dispensing of Motor Fuel

The following requirement are found in the Arizona Revised Statutes, Title 41, Chapter 15. To view click on the highlighted statue number below.

Sale, delivery or consignment of motor fuel; temperature presumption - A.R.S. 41-2082
Standards For Motor Fuel Exemptions - A.R.S.  41-2083
Heating of motor fuel prohibited - A.R.S. 41-2084
Dispensing motor fuel; hold-open latches; definition - A.R.S. 41-2085

Signage & Labeling

The following signage and labeling requirement are found in Arizona Administrative Code Title 20, Chapter 2 . To view the requirement, scroll down to the reference number pertaining to the area of interest.

Price and Grade Posting on External Signs - A.A.C R20-2-704
Dispenser and Storage Tank Labeling - A.A.C. R20-2-705
Oxygenated Fuel Labels - A.A.C. R20-2-709
Motor Fuel Storage Tank Labeling - A.A.C. R20-2-713
Product Transfer Documentation - A.A.C. R20-2-707 and A.A.C. R20-2-757
 
Volumetric Test

In accordance with A.A.C. R20-2-703, the Department is responsible for the volumetric inspection of motor fuels and motor fuel dispensers which includes gasoline, diesel and propane. Field officers examine fueling dispensers at each service station in Arizona approximately once every three years, or when there is a complaint.
 
What is a volume test? A Volume test includes an officer pumping fuel into a certified test measure to check for the accuracy of the amount of product delivered by the dispenser. Officers follow the volumetric testing procedures found in the National Institute of Standards and Technology Publication 112.
 
How does the public know a dispenser is compliant? Officers place an approval seal (sticker) on the dispenser, upon completion of the inspection, if the dispenser passes the test and meets all legal requirements. If the dispenser does not pass the test, the dispenser is "red tagged" which, requires repair and recalibration prior to being placed back into service.
 
Diesel Fuel Taxation and Light Class and/or Exempt Use Class Refunds
 
Question:Does a gas station that has diesel fuel have to list the price and then give back the $.08 in tax credit to all small vehicles?
 
Answer: The service station must refund the $.08 if a customer request it. If a station sells to both use and exempt class vehicles, the $.08 road tax must be included in the price posted at the pump.
 
For Stations serving Light Class and/or Exempt Use Class vehicles:
Dispenser Price Posting must be that of the highest priced diesel fuel.

Dispenser labeling for Light Class and/or Exempt Use Class vehicles:

"This dispenser is authorized for use by light class or exempt use class vehicles only."
 
For Stations serving both Light Class and Use Class vehicles:
Dispenser Price Posting: The posted price must be that of the highest priced diesel, which would include the eight cents per gallon Use Class Excise Tax.

Dispenser Labeling for Light Class and Use Class vehicles:
"Light Class and/or Exempt Use Class vehicles dispensing Diesel Fuel from this dispenser are entitled to a refund of eight cents per gallon off of the posted price."
 
Statues & Rules Pertaining to Diesel Tax Include:
 
Arizona Revised Statutes 28-5605: Use fuel tax collection; fuel dispenser labels; civil penalty

Arizona Revised Statutes 28-5606: Imposition of motor fuel taxes

Arizona Administrative Code R20-2-704 and 705
. Enforcement of price posting.