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ICC U2 UST Decommissioning Exam Questions With Correct Answers 2025., Exams of Internet and Information Access

ICC U2 UST Decommissioning Exam Questions With Correct Answers 2025.

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2024/2025

Available from 07/08/2025

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ICC U2 UST Decommissioning Exam
Questions With Correct Answers 2025
1. Under ground _______________ storage systems are not longer needed or suitable
for product storage must be properly disposed of properly - correct answer.A. Gas
B. Oil
C. Petroleum
D. All of the above
Answer. C
2. All work that is completed at the site must be accomplished in accordance with
federal, state, and local requirements as well as accepted safety standards. - correct
answer.A. True
B. False
Answer: True.
3. All applicable permits must be obtained prior to beginning any work. - correct
answer.A. True
B. False
Answer True.
4. What is the hazard that removers of petroleum tanks are faced with, dangers such as
petroleum hydrocarbon liquids vapor, or waste. - correct answer.List three
____________ ______________ _______________
5. What are some syntomes of inhaling or obsorbing high levels of petroleum
hydorocarbon vapors. - correct answer.List three
_____________ _______________ ____________
Dizziness excitement, unconsciousness
6. Artificial resporation should be applied if - correct answer.A. They hit their head
B. They cant see
C. They have stopped breathing
D. They suffer from cardiac arrest
AnswerC
7. What are three parts of the body should Petroleum liquids be kept away from an
example would be eyes, skin and moulth. - correct answer.List three
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Download ICC U2 UST Decommissioning Exam Questions With Correct Answers 2025. and more Exams Internet and Information Access in PDF only on Docsity!

ICC U2 UST Decommissioning Exam

Questions With Correct Answers 2025

  1. Under ground _______________ storage systems are not longer needed or suitable for product storage must be properly disposed of properly - correct answer.A. Gas B. Oil C. Petroleum D. All of the above Answer. C
  2. All work that is completed at the site must be accomplished in accordance with federal, state, and local requirements as well as accepted safety standards. - correct answer.A. True B. False Answer: True.
  3. All applicable permits must be obtained prior to beginning any work. - correct answer.A. True B. False Answer True.
  4. What is the hazard that removers of petroleum tanks are faced with, dangers such as petroleum hydrocarbon liquids vapor, or waste. - correct answer.List three

  1. What are some syntomes of inhaling or obsorbing high levels of petroleum hydorocarbon vapors. - correct answer.List three

Dizziness excitement, unconsciousness

  1. Artificial resporation should be applied if - correct answer.A. They hit their head B. They cant see C. They have stopped breathing D. They suffer from cardiac arrest AnswerC
  2. What are three parts of the body should Petroleum liquids be kept away from an example would be eyes, skin and moulth. - correct answer.List three

_____________ _________________ ______________

  1. Hiogh ocupational exposures to benezene have been associated with various human blood disorders - correct answer.True/False AnswerTrue
  2. Smoking matterials or any flamable materials must be reamoved from the job site in order to prevent - correct answer.A. People from smoking B. Sudden compution C. Second hand smoke D. Exploshins indide of tanks due to large amounts of vapor E. B and D Answer E
  3. What tool with the abbreviation CGI should be used to check for hazardous vapor concentrations. - correct answer._____________________________________ Answer: Combustible gas indicator
  4. All tools that are in areas with hazardous vapor concentartions should be shut down or they should be ________________ proof. - correct answer.__________________ answer Explosion
  5. Undergroud storage tanks are considered temerarially out of service if they are idle but will return to service in ____ years. - correct answer.______ answer 1
  6. Undergroud storage tanks are considered temerarially out of service if they are - correct answer.A. Idle but will return to service within one year B. Are awaiting abandonement in place C. Are waiting for reamoval D. All of the above Answer D
  7. Tanks that are out of service must be - correct answer.A. Checked routinely C. Filled with sand B. Properly secured D. A and B Answer B
  8. When removing an under ground tank what method for removal is preferred. - correct answer.A. Removal of the tank B. Closure in place Answer B
  1. Almost a complete filling of the tank can be achieved by filing it with a combination of sand and ________________ - correct answer.A. Crushed Rock B. Cachinnate C. Yerk D. Earth Answer D
  2. When under ground tanks are disposed in place the owner of the tank should keep a permanent record of the tank location, the date of disposal in place, and the method of conditioning the tank for disposal. - correct answer.Why


  1. To remove the tank of vapors remove the fill pipe, gauge pipe, vapor recovery truck connection, submersible pumps, and other tank fixtures. - correct answer.
  2. Vent all vapors from the tank at a minimum height of 12 feet above grade and 3 feet about any adjacent roof lines until the tank is purged of flammable vapors. - correct answer.________ feet ________ Feet
  3. When purging a tank of gasses the area should be kept free of gases by using ventilation, specifically an _______________ type air mover. - correct answer.A. Teacher B. Osculate C. Educator D. Cantankerous Answer C
  4. Fill (drop) tubes must be removed to allow proper _________________ of the air in the tank. - correct answer.A. Lugubrious B. Debauchery C. Farrago D. Diffusion Answer D
  5. What is the safest and simplest methods for vapor-freeing a tank. - correct answer._____________________ Answer by adding water.
  6. When using water for vapor freeing what is one reason that this method may become prohibited. - correct answer.A. The high cost of water B. Treatment/disposal C. Transportation of the water D. All of the above Answer B
  1. During the prossess of water filling a tank exessive amounts of flammable vapors will be expleed throught the fill opping. What is one way to temporarily minimize the escape. - correct answer.A. Temporarily cap the oppening B. Using an educator type air mover C. Fill the tank slowly D. A and C Answer A
  2. Steam can be used to clean and vapor-free a tank. However, a large ___________ _______________ can build up on the nozzle of the steam jet. This can make steam cleaning dangerouse and if other meathoses are avalable steam purging should be avoided. - correct answer.A. Explosive detonation B.
  3. The tank atmosphere and the excavation area should be regularly tested why. for flammable or combustible vapor - correct answer.Answer For flammable or combustible vapor
  4. What device should be used to test the tank - correct answer.Combustible gas indicator probe into the fill opening at the bottom
  5. Readings ______% or less of the lower flammable limit must be obtained before the tank is considered safe for removal from the ground. - correct answer.20% Answer
  6. Thanks should be labeled after removal from the ground but prior to removal from the ______________ - correct answer.A. Site B. Abnegation C. Cleve D. None of the above Answer A
  7. Warning of certain types of reuse. The former content and present vapor state of each tank including vapor-freezing treatment and date should be written on the tank in _____ inch high lettering. - correct answer.A. 3 B. 2 C. 2 1/ D. 1 E. 1 1/ Answer B
  8. Tanks that once where declared clean of fule oil could still again some time later show sighnes of containing fule oil. - correct answer.True/ False True
    • correct answer.
    • correct answer. in accordance with the EPA Federal Regulations, which of the following events must be reported to the state implementing Agency for tank removal. choose all that apply - correct answer.notice of intent to remove a UST discovery of a suspected release discovery of a confirmed release when entering a tank, what is the test result that must be achieved to safely proceed with removal activities - correct answer.oxygen reading of 5% or less what is the flashpoint, as classified by osha and the NFPA, for flammable liquids? - correct answer.less than 100 degrees Fahrenheit which of the following answers best describes the process of purging a tank - correct answer.ventilating with tank using an educator-type air mover driven by compressed air. ventilation using defused air blower which of these petroleum constituents is described as colorless, water insoluble liquid with a smell associated with paint thinners and upon low-to-moderate inhalation can cause: tiredness, confusion, weakness, drunken type actions, memory loss, nausea, loss of appetite, hearing loss, and color vision loss? - correct answer.toluene which of these petroleum constituents is described as a volatile, flammable, and colorless liquid that is sparingly soluble in water and was phased out of use in gasoline do to its solubility in water, which resulted in contamination of water resources in numerous states? - correct answer.methyl tert butyl ether (MTBE) which of the following answers Defines viscosity? - correct answer.the measure of the products resistance to gravity flow for type a soil, what is the maximum allowable slope for a simple slope excavation of 20 ft or less? - correct answer.3/4: what is the maximum allowable slope? - correct answer.the steepest incline of an excavation face that is acceptable for the most favorable site condition as a protection against cave-ins, and is expressed as the ratio of horizontal distance to Vertical rise for fiberglass reinforced plastic tanks, you must maintain a minimum clearance between the Jets and tanks and between sides of excavation of what distance? - correct answer.18 in

which of the following answers describe specific gravity? - correct answer.the ratio of the density of petroleum with aspects of the density of water specific gravity - correct answer.most petroleum float on water vapor pressure - correct answer.High vapor pressure equals more Vapors viscosity - correct answer.more viscous equals slower flowing Vapor density - correct answer.Vapors are slightly heavier than air The regulations to enforce compliance of underground storage tank systems in the state are found in? a.) Code of Federal Regulations, 40 CFR Part 281 b.) California Code of Regulations, Title 23, Chapter 16 c.) Code of Federal Regulations, 40 CFR Part 280 d.) California Code of Regulations, Title 23, Chapter 17 - correct answer.b.) California Code of Regulations; Title 23, Chapter 16 By definition an "underground storage tank system" includes a.) The tank, all connected piping and dispensers b.) The tank, all connected piping, ancillary equipment and containment system c.) Only the tank d.) Only tanks totally beneath the surface of the ground - correct answer.b.) The tank, all connected piping, ancillary equipment and containment system (H&SC, Sec 25281(z)) Under-dispenser containment was required for all UST systems by ___________. a.) December 31, 2003 b.) July 1, 1987 c.) January 1, 1984 d.) January 1, 2000 - correct answer.a.) December 31, 2003 CCR Title 23, Sec 2636(g)(C) According to California Law, UST systems installed after July 1, 2003, require a one- time ELD test to ensure that the tank is product tight... a.) If the tank is located within one (1) mile of a public drinking water well b.) If the tank is located within 1000 feet of a public drinking water well c.) Unless the tank is equipped with secondary containment d.) In all cases - correct answer.For ALL tanks before use (H&SC 25290.2 (I))

a.) 10 years b.) 1.5 years c.) 3 years d.) 6.5 years - correct answer.d.) 6.5 years CCR Title 23, Sec 2712(b) Impressed current cathodic protection systems shall be inspected no less than every ___________ to ensure that they are in proper working order: a.) 60 days b.) 90 days c.) 30 days d.) 120 days - correct answer.a.) 60 days CCR Title 23, Sec 2635(a)(2) Monthly monitoring data must be kept on file for _________________. a.) 3 years b.) 6.5 years c.) 5 years d.) For the life of the UST system - correct answer.a.) 3 years CCR Title 23, Sec 2712(b) By December 22, 1998, all automatic line leak detectors installed on single-walled pressurized piping must be capable of: a.) Restricting product flow b.) Triggering an audible and visual alarm c.) Shutting down the pumping system d.) Shutting off the flow at the dispenser - correct answer.c.) Shutting down the pumping system CCR Title 23, Sec 2666(c) When an automatic tank gauge is utilized for single-walled tank leak detection, it shall generate a post-test hard copy data report of the following information, except: a.) Liquid volume b.) Fuel depth c.) Outside air temperature d.) Time and date of test - correct answer.c.) Outside air temperature

CCR Title 23, Sec 2643(b)(1) If a UST system is utilizing an overfill alarm, the alarm must be triggered to alert the transfer operator when the tank is no more than ___________ full a.) 85% b.) 95% c.) 90% d.) 80% - correct answer.c.) 90% CCR Title 23, Sec 2635(b)(2)(A) A service technician has performed calibration and maintenance on an ATG probe; this maintenance record must be kept on file for ______________. a.) 6.5 years b.) 3 years c.) 5 years d.) Life of the UST system - correct answer.c.) 5 years CCR Title 23, Sec 2712(b) An automatic tank gauge is utilized for leak detection of the ______________. a.) Tank b.) Tank and Piping c.) Piping d.) Interstitial space - correct answer.a.) Tank CCR Title 23, Sec 2643(b)(1) After completion of enhanced leak detection (ELD) test, the ELD test results must be submitted to the _________________. a.) The local agency b.) The SWRCB c.) Owner of the UST system d.) To both the SWRCB and the local agency - correct answer.d.) To both the SWRCB and the local agency CCR Title 23, Sec 2644.1(a)(5) Which agency approves a site-specific variance which allows for an alternative method of construction or monitoring: a.) The Regional Water Quality Board

d.) Inspect the facility and determine compliance - correct answer.d.) Inspect the facility and determine compliance CCR Title 23, Sec 2712(c) Spill containers must be tested no less than _______________ to demonstrate that it is capable of containing the hazardous substances until it is detected and cleaned up. a.) Every 6 months b.) Every 36 months c.) Every 12 months d.) At the time of install or replacement - correct answer.c.) Every 12 months H&SC, Sec 25284. All the following components require third party certification, except: a.) Automatic tank gauging systems b.) Statistical inventory reconciliation methods c.) Spill Containment lids d.) Liquid phase out-of-tank products - correct answer.c.) Spill Containment lids The exterior surface of an underground storage tank must bear a marking or label which shows the following information, except: a.) Design pressure in psig b.) Useable capacity in gallons. c.) Width of the interstitial space d.) Identity of manufacturer - correct answer.c.) Width of the interstitial space CCR Title 23, Sec 2631(b) Which of the following is not a confined space: a.) A really deep turbine sump b.) A space not designed for continuous employee occupancy c.) An area with limited access d.) An area with limited ventilation - correct answer.d.) An area with limited ventilation CCR Title 8, Sec 5157(b) Records for UST construction, repairs, lining, and upgrades must be kept for: a.) 3 years b.) 10 years c.) 5 years

d.) The life of the tank - correct answer.d.) The life of the tank CCR Title 23, Sec 2712(b) Under-dispenser containment was required at the time of installation for all UST systems installed after _________________. a.) July 1, 1987 b.) January 1, 2000 c.) January 1, 1984 d.) December 31, 2003 - correct answer.b.) January 1, 2000 CCR Title 23, Sec 2636(g)(1)(A) Cathodic protection systems must be inspected by a certified cathodic protection tester within __________________months of installation: a.) 3 b.) 6 c.) 12 d.) 18 - correct answer.b.) 6 CCR Title 23, Sec 2635(a)(2)(A) A secondary containment system which is not an integral part of primary containment shall be designed and constructed according to an engineering specification approved by a third party. The secondary containment system shall contain ______________ of the volume of the largest primary container within it, in the case of multiple primary containers: a.) 100 percent b.) 10 percent c.) 110 percent d.) 150 percent - correct answer.d.) 150 percent CCR Title 23, Sec 2631(e)(1)(B) All the following are approved overfill prevention systems, except: a.) Automatic shutoff devices b.) Spill Containers c.) Overfill alarms d.) Flapper valves - correct answer.b.) Spill Containers CCR Title 23, Sec 2635(b)(2)

CCR Title 23, Sec 2715(g)(h) Which of the following would not require secondary containment testing? a.) Interstitial space hydrostatically monitored b.) Under-dispenser containment c.) Turbine piping sump d.) Secondary piping - correct answer.a.) Interstitial space hydrostatically monitored CCR Title 23, Sec 2637(g) Local agency inspectors performing UST system inspections must meet the following requirements: which of the following statements is most accurate. a.) Effective July 1, 2005 posses a current inspector certificate issued by ICC b.) Renew the CA UST Inspector Certification every 24 months by either passing the ICC Cal. UST Inspector exam of satisfying equivalent criteria as approved by the Board. c.) Renew the CA UST Inspector Certification every 24 months by passing the ICC Cal. UST Inspector exam d.) Newly hired local agency inspectors are required to pass the CA UST Inspector exam 120 days from the date of hire. - correct answer.b.) Renew the CA UST Inspector Certification every 24 months by either passing the ICC Cal. UST Inspector exam of satisfying equivalent criteria as approved by the Board. CCR Title 23, Sec 2715(j) Fiberglass tanks shall be repaired by the following, except: a.) Small fractures and fissures may be repaired with epoxy b.) Fiberglass cloth with a minimum dimension 12 x 12 inches centered over the area to be repaired. c.) A second layer of fiberglass cloth shall be installed directly over the primary cloth layer and shall be cut to overlap the primary patch by 5 inches on all sides. d.) The repaired tank shall be tested for tightness within 30 calendar days following the date of the completion of the repair. - correct answer.c.) A second layer of fiberglass cloth shall be installed directly over the primary cloth layer and shall be cut to overlap the primary patch by 5 inches on all sides. CCR Title 23, Sec 2661(d)(4) Tanks installed after July 1, 1987 with suction piping are exempt from the requirement for secondary containment of the piping provided all the following are met, except: a.) No valves or pumps are installed below-grade in the suction line. b.) The below-grade piping operates at less than atmospheric pressure.

c.) The below-grade piping is sloped so that the product will drain back into the storage tank d.) An angle check valve or check valve is located as near to the tank top and as close to the dispenser pump as possible. - correct answer.d.) An angle check valve or check valve is located as near to the tank top and as close to the dispenser pump as possible. CCR Title 23, Sec 2636(a)(3) Automatic line leak detectors shall be installed on underground pressurized piping and shall be capable of detecting a 3-gallon per hour leak rate at 10 psi within 1 hour with a probability of detection of at least ______% and a probability of false alarm no greater than _______%. a.) 95, 5 b.) 98, 2 c.) 5, 95 d.) 2, 98 - correct answer.a.) 95, 5 CCR Title 23, Sec 2636(f)(2) & 2643(c)(1) An emergency impact valve (shear valve) is found in the following location on an UST System. a.) At the turbine piping termination b.) Base of the dispenser c.) Under the extractor tee d.) Spill container - correct answer.b.) Base of the dispenser Underground storage tank owners and operators shall submit a copy of the secondary containment test report to the local agency within _____ of the completion of the test, a.) 60 days b.) 30 days c.) 45 days d.) 15 days - correct answer.b.) 30 days CCR Title 23, Sec 2637(e) Notification to perform a secondary containment test must be given to the local agency by: a.) A service technician or a licensed tank tester. b.) Cathodic protection tester. c.) Owner/operator of UST. d.) State Water Resources Control Board. - correct answer.c.) Owner/operator of UST

Any person(s) installing underground storage tank systems or components shall be certified or licensed by: a.) The Contractors State License Board b.) The local agency c.) The State Water Resources Control Board d.) The Regional Water Quality Board - correct answer.a.) The Contractors State License Board CCR Title 23, Sec 2715(g) The designated UST operator(s) shall perform monthly visual inspections of all UST's for which they are designated. The monthly visual inspection shall include all of the following, except: a.) Inspecting for the presence of hazardous substances, water, or debris in spill containers. b.) By July 1, 2005, verify that all facility employees have been trained. c.) Reviewing the alarm history report or log for the previous month. d.) Inspecting for the presence of hazardous substances, water, or debris in containment sumps regardless of documentation showing each alarm for the previous month has been responded to appropriately. - correct answer.d.) Inspecting for the presence of hazardous substances, water, or debris in containment sumps regardless of documentation showing each alarm for the previous month has been responded to appropriately. CCR Title 23, Sec 2715(c) The following statements are true about the certification of monitoring equipment, except: a.) The certification is an annual requirement. b.) The certification shall be made on a "Monitoring System Certification" form. c.) UST owners and operators shall submit a completed "Monitoring System Certification" form to the local agency within 30 days after completion of the inspection. d.) The "Monitoring System Certification" form must be posted. - correct answer.d.) The "Monitoring System Certification" form must be posted. CCR Title 23, Sec 2638, 2641(j) Field-installed cathodic protection systems shall be designed and certified as adequate by a: a.) Cathodic protection tester.

b.) A corrosion specialist. c.) Owner/Operator. d.) A service technician or a licensed tank tester. - correct answer.b.) A corrosion specialist CCR Title 23, Sec 2635(a)(2)(A) A facility has a single wall tank and has chosen statistical reconciliation plus tank integrity testing as their quantitative release detection method. The following statements are false about this method, except: a.) A tank integrity test shall be conducted once every year. b.) Statistical inventory reconciliation shall be conducted at least once per month in accordance with section 2646.1. c.) The SIR method shall be capable of detecting a release of 0.1 gallon per hour. d.) The product level in the tank is at least 5 feet. - correct answer.b.) Statistical inventory reconciliation shall be conducted at least once per month in accordance with section 2646.1. CCR Title 23, Sec 2643(b)(3) The designated UST operator must train the employees about all of the following, except: a.) Permit conditions b.) Monitoring plan c.) Best management practices d.) Leak response plan - correct answer.a.) Permit conditions CCR Title 23, Sec 2715(f)(1) When steel tanks arrive at the jobsite, they should be unloaded by: a.) Sliding off the truck b.) Pulling off the truck with a winch c.) Rolling off the truck sideways d.) Lifting off the truck with a cable attached to tank-lifting lugs - correct answer.d.) Lifting off the truck with a cable attached to tank-lifting lugs PEI RP 100 Section 2. (Recommended Practices for Installation of Underground Liquid Storage Tanks) When an automatic tank gauge is utilized to monitor a single-walled tank, a 0. gallon/hour leak test must be performed: