Class A Operator UST Spring Exam Questions With 100% Correct Answers | Updated 2026 | Guaranteed Pass

Class A Operator UST Spring Exam Questions With 100% Correct Answers | Updated 2026 | Guaranteed Pass Is this statement true or false? Fiberglass and flexible plastic piping do not need to have cathodic protection. - answer-False. Cathodic protection - answer-a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. A simple method of protection connects the metal to be protected to a more easily corroded "sacrificial metal" to act as the anode. Fill in the blank to make the statement correct. Owners and Operators must keep the most recent ___ records of cathodic protection testing. - answer-2 How long do owners and operators have to report a release to the implementing agency? - answer-24 Hours Fill in the blank if the tank was installed on or before April 11, 2016 manual tank gauging ALONE can be used on tanks containing ________ gallons and meeting certain diameter requirements? - answer-1000 gallons or less. True or False? Tanks from 1001 gallons to 2000 gallons and tanks from 551 and 1000 gallons that do not meet the specified diameters can temporarily use manual tank gauging when it is combined with tank tightness testing. - answer-TrueTrue or False? Under UST regulation combining manual tank testing and tank tightness testing can only be used for 10 years after the tank was installed and may not be used for any tanks installed after April 11 2016. - answer-True True or False? Manual tank gauging can be used to meet the release detection monitoring requirements for any size of tank. - answer-False True or False? Owners and operators may cancel a financial responsibility mechanism at any time. - answerFalse When can an owner or operator cancel a financial responsibility mechanism? Only when they have obtained an alternative mechanism; the tank has been permanently closed or undergoes a change in service; or if corrective action is required and completed. - answer-Only when they have obtained an alternative mechanism; the tank has been permanently closed or undergoes a change in service; or if corrective action is required and completed. True or False? Owners and operators do not need to maintain financial responsibility once the UST has been permanently closed. - answer-True True or false? Septic tanks are regulated by the 40 CFR part 280. - answer-False Owners and operators who switch from E10 to E15 have 30 days AFTER switching to notify the implementing agency. - answer-False They have 30 days BEFOREWhich of the following substances if stored in an UST would cause the UST to be regulated under 40 CFR part 280? Choose all that apply: -Gasoline with 10% ethanol -Propane -Diesel -Kerosene - answer-gasoline with 10% ethanol, diesel, and kerosene. How long do owners and operators keep records demonstrating compatibility with gasoline containing 15% ethanol? - answer-As long as the UST system stores 15% ethanol True or false? Only tanks need to be compatible with the regulated substances stored. - answer-False True or false? Under-dispenser containment used for piping interstitial monitoring does not have to be tested for tightness once every three years. - answer-False True or false? Double walled spill buckets where the space between the walls of the spill bucket is no longer monitored at least every 30 days must be tested for liquid tightness within -1 year after monitoring ceases-. - answer-False. within 30 days How often must overfill prevention equipment be inspected for operability? - answer-Every 3 years True or false? Owners and operators must measure for water in the in their tank once a month when using inventory control combined with tank tightness testing. - answer-TrueTrue or false? Groundwater and vapor monitoring wells used to meet the release detection requirements do not have to be secured. - answer-False True or false? Groundwater and vapor monitoring may be used on tanks and piping installed on or before April 11, 2016. - answer-True True or false? For tanks installed after April 11th 2016 continuous in tank monitoring is an allowable form of release detection. - answer-False. Must be secondarily contained and use interstitial monitoring. True or false? Owners and operators must ensure the volume available in the tank is greater than the volume of the product to be transferred to the tank, - answer-True Which overfill prevention equipment may be installed after October 13, 2015? - answer-High level alarm and automatic shutoff device. True or false? Owners and operators do not have to maintain corrosion protection during temporary closure if the UST is empty. - answer-False Which class operator initially addresses emergencies presented by a spill or release from an UST system? - answer-Class C How many operators must be trained? - answer-3Which piping option does not meet the corrosion protection requirement? - answer-Galvanized piping What most owners and operators do if their UST fails the internal lining inspection and cannot be repaired according to a code of practice? - answer-Permanently close the UST True or false? Owners and operators do not have to report a suspected release if a release detection false alarm occurs - answer-True As stated in the federal UST regulation a spill or overflow of how many gallons that results in release of petroleum to the environment must be reported to the implementing agency. - answer-Greater than 25 gallons T or F: Tanks must be welded steel tanks? - answer-True Secondary containment - answer--All regulated ASTs must have secondary containment with at least 110% of storage capacity of the largest single AST within the secondary containment wall. -Must be free of floating oils. -Fireproof -Compatible with regulated substance stored Vehicle Impact Protection - answer-Must be: -Protected against vehicle impact by barriers -Guard posts, concrete filled steel no more than 4 feet apart -secondary containment walls that are at least 5 feet from the tanks, 3 feet above ground level -Jersey barriers3 Methods of Corrosion protection - answer-At least one method must be used -Sacrificial/Galvanic Anode CP System -Impressed Current CP System -Isolation Both Sacrificial/Galvanic Anode CP System shall be designed and installed.... - answer-With test stations that allow owners/operators to monitor the operation of the CP system Overfill Protection - answer-System will sound alarm at 90% full. System shall close valves at 95% full. For tanks larger than 100,000 gallons a second audible and visual alarm will sound at 95% full. Connected lines - answer--Non-corrodible -double walled lines -equipped with working leak detection equipment -Above ground lines must be steel -Connections between above and underground lines must be made inside accessible leak proof sumps. -New and replacement underground piping shall be double wall and interstitially monitored.