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Certified Site Surveillance Technician (CSST) Exam Questions And Correct Answers (Verifi, Exams of Building and Prefabrication

South CollegeBuilding and Prefabrication

Certified Site Surveillance Technician (CSST) Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025 Q&A | Instant Download PDF California-specific regulations and requirements

Typology: Exams

2024/2025

Available from 07/11/2025

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Certified Site Surveillance Technician
(CSST) Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2025 Q&A | Instant Download PDF
California-specific regulations and requirements.
1. What is the minimum daily frequency for CSST air monitoring during an
asbestos abatement project?
A. Once per week
B. Once per day
C. Twice per shift
D. Every two hours
Rationale: California regulations require daily air monitoring during
abatement to ensure worker safety and regulatory compliance.
2. When must a CSST stop work on an asbestos project?
A. When ambient temperature exceeds 90°F
B. When fiber concentrations exceed permissible exposure limits
(PELs)
C. When equipment malfunctions
D. When the supervisor is on break
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Download Certified Site Surveillance Technician (CSST) Exam Questions And Correct Answers (Verifi and more Exams Building and Prefabrication in PDF only on Docsity!

Certified Site Surveillance Technician

(CSST) Exam Questions And Correct

Answers (Verified Answers) Plus Rationales

2025 Q&A | Instant Download PDF

California-specific regulations and requirements.

  1. What is the minimum daily frequency for CSST air monitoring during an asbestos abatement project? A. Once per week B. Once per day C. Twice per shift D. Every two hours Rationale: California regulations require daily air monitoring during abatement to ensure worker safety and regulatory compliance.
  2. When must a CSST stop work on an asbestos project? A. When ambient temperature exceeds 90°F B. When fiber concentrations exceed permissible exposure limits (PELs) C. When equipment malfunctions D. When the supervisor is on break

Rationale: CSSTs must halt work if fiber levels exceed OSHA/Cal-OSHA PELs to prevent health hazards.

  1. Which of the following is NOT a CSST responsibility? A. Visual inspections B. Air sampling C. Writing abatement contracts D. Monitoring work practices Rationale: Contract development is not within the CSST scope; they focus on oversight and compliance.
  2. A negative exposure assessment (NEA) is used to: A. Justify full containment B. Demonstrate worker exposure is below the PEL C. Increase work crew size D. Eliminate the need for PPE Rationale: NEAs provide documented proof that workers are not overexposed to asbestos, allowing for regulatory flexibility.
  3. In California, the employer must retain asbestos exposure monitoring records for: A. 10 years B. 30 years

A. Every 8 hours B. Daily C. Once per project D. Weekly Rationale: Daily visual inspections help detect breaches or damage early and prevent fiber release.

  1. Which of the following best defines “clearance air monitoring”? A. Checks exposure before entering regulated area B. Confirms no asbestos fibers remain post-abatement C. Measures daily fiber levels D. Measures background air before work starts Rationale: Clearance monitoring ensures the area is safe for re-occupancy after removal is complete.
  2. An aggressive clearance method typically includes: A. Use of HEPA vacuums only B. Use of fans and leaf blowers to disturb settled fibers C. Airless containment D. Passive sampling Rationale: Aggressive methods help ensure even hidden fibers are detected during post-abatement clearance.
  1. A CSST notices a worker without PPE in a regulated area. What should be done first? A. Notify OSHA B. Stop the work and inform the supervisor C. Take a photo as evidence D. Ignore it if it's a short exposure Rationale: CSSTs must act immediately to protect workers and comply with regulations.
  2. Which of the following statements about HEPA filters is true? A. They capture particles down to 1 micron B. They capture 99.97% of particles ≥0.3 microns C. They do not work for asbestos fibers D. HEPA filters are optional in containment Rationale: HEPA filters are crucial for filtering out hazardous fibers including asbestos.
  3. A breach in the containment barrier should be: A. Repaired at the end of the shift B. Reported and repaired immediately C. Ignored unless it’s large D. Covered with plastic sheeting only Rationale: Immediate action prevents uncontrolled asbestos release and exposure.
  1. The CSST certification is valid for: A. 5 years B. 1 year C. 3 years D. Lifetime Rationale: Annual renewal ensures CSSTs remain up to date on regulatory changes.
  2. Which of the following is a Class I asbestos job? A. Installing vinyl flooring B. Removal of TSI or surfacing ACM C. Glove bag operations D. Roofing work Rationale: Class I covers the most hazardous activities, including removal of thermal systems and surfacing materials.
  3. What must be done before starting a Class I job? A. Hire a supervisor B. Develop a written exposure control plan C. Submit a Cal/OSHA variance request D. Schedule a pre-job meeting Rationale: The control plan outlines work procedures and safety practices.
  1. All of the following are required in a negative pressure enclosure EXCEPT: A. Airlocks B. Gasoline-powered equipment C. HEPA air filtration units D. Manometers Rationale: Gasoline-powered tools pose fire risks and are not suitable in containment.
  2. What is the required minimum negative pressure within an asbestos containment? A. - 0.005 inches water column B. - 0.001 inches water column C. - 0.02 inches water column D. - 0.2 inches water column Rationale: A negative pressure of at least - 0.02 inches water column is required to ensure air flows inward, preventing fiber release.
  3. Which document outlines procedures for identifying and responding to suspect ACM? A. Health and Safety Plan B. Asbestos Operations and Maintenance Plan (O&M Plan) C. MSDS Sheets D. Air Clearance Report

Rationale: The CSST or a certified consultant must verify all asbestos debris is removed before sampling.

  1. The minimum number of air samples for clearance after abatement (using PCM) is: A. 3 B. 5 C. 10 D. 1 per room Rationale: According to AHERA and California guidelines, a minimum of 5 samples is required.
  2. What is the maximum permissible exposure limit (PEL) for asbestos under Cal/OSHA? A. 0.2 f/cc B. 0.1 f/cc over 8 hours C. 0.01 f/cc D. 1.0 f/cc Rationale: The 8-hour time-weighted average PEL is 0.1 fibers per cubic centimeter.
  3. What is the purpose of a decontamination unit? A. To prevent asbestos spread by cleaning personnel and equipment B. To mix encapsulants

C. To filter air D. To store ACM waste Rationale: Decon units contain and clean contaminants before workers exit the work area.

  1. If background air sampling exceeds 0.01 f/cc after abatement, the area: A. Is ready for re-occupancy B. Fails clearance C. Can be partially reopened D. Is considered clean Rationale: A result above 0.01 f/cc using PCM means the space has not passed clearance.
  2. CSST daily logs must include all EXCEPT: A. Air sample results B. Inspection notes C. Daily weather report D. Worker wage information Rationale: Logs must track project details relevant to health and safety, not payroll.
  3. Which federal law regulates asbestos in schools?

A. Chrysotile B. Crocidolite C. Amosite D. Anthophyllite Rationale: Crocidolite fibers are very thin and easily inhaled, making them more hazardous.

  1. Wet methods are required during removal to: A. Make asbestos heavier B. Suppress dust and fiber release C. Increase visibility D. Clean surfaces Rationale: Wetting materials keeps fibers from becoming airborne during disturbance.
  2. How should asbestos waste be labeled? A. “Dust” and “Hazardous Waste” B. “Caution: Contains Asbestos – Avoid Creating Dust” C. “Do Not Inhale” D. “EPA Waste” Rationale: Regulations require specific asbestos warning labels on bags and containers.
  3. Who is responsible for ensuring containment integrity?

A. The building engineer B. Any worker C. The CSST D. CalRecycle Rationale: CSSTs must regularly inspect and verify that containments are properly sealed.

  1. Air samples collected inside containment must be analyzed by: A. A supervisor B. An on-site lab C. A certified laboratory D. The contractor Rationale: Only certified labs can analyze asbestos air samples under regulatory standards.
  2. Who is responsible for reviewing and signing the CSST daily log? A. The building owner B. Cal/OSHA C. The project supervisor D. The monitoring lab Rationale: The supervisor must review and confirm daily documentation of site conditions.
  3. Which activity does not require a regulated area?

A. Spray it with water B. Confirm asbestos content by bulk sampling C. Seal off the area D. Notify local health department Rationale: You must first determine if asbestos is present before disturbing materials.

  1. A CSST must be independent of: A. All project stakeholders B. The consultant C. The abatement contractor D. The air monitoring lab Rationale: CSSTs must not be employed by the contractor performing the abatement to avoid conflict of interest.
  2. One method for ensuring containment has proper negative pressure is: A. Temperature log B. Manometer monitoring C. Spot-checks only D. Vacuum test Rationale: Manometers measure the pressure differential inside the containment accurately.
  3. A CSST is required to report deviations from approved work practices to:

A. Cal/OSHA only B. Workers only C. The project supervisor and consultant D. The lab Rationale: The CSST must notify the responsible parties to address non- compliance promptly.

  1. What does “friable” mean in asbestos terms? A. Fire-resistant B. Can be crumbled by hand pressure C. Encapsulated D. Easily visible Rationale: Friable ACM poses a greater hazard due to its ease of releasing fibers.
  2. Which of the following is an acceptable final disposal location for ACM waste? A. Any landfill B. City compost facility C. Approved Class II hazardous waste landfill D. Municipal recycling center Rationale: Only landfills permitted to accept asbestos-containing waste may be used.
  1. Asbestos waste must be double-bagged in: A. 4-mil clear plastic B. 6-mil labeled leak-tight bags C. Any durable trash bags D. Paper bags with liners Rationale: Regulations require double 6-mil bags clearly labeled as asbestos waste to prevent leaks and exposure.
  2. The glove bag method must be: A. Left on overnight B. Used for intact insulation only C. Used on damaged ACM D. Emptied in open air Rationale: Glove bags are only for removing intact asbestos-containing pipe insulation under controlled conditions.
  3. A regulated area must be demarcated with: A. Warning tape and signage B. Security guards C. Fencing only D. Air filters Rationale: Demarcation ensures unprotected individuals are warned and do not enter the hazardous zone.
  1. Daily air monitoring is required for: A. Class IV jobs only B. All asbestos jobs unless NEA has been established C. Non-friable materials only D. Weekend-only jobs Rationale: Daily personal and area air monitoring is required unless a Negative Exposure Assessment is documented.
  2. A competent person on an asbestos project is defined as someone who: A. Has 1 year of field experience B. Holds a CSST certificate C. Can identify hazards and has authority to correct them D. Supervises air sampling Rationale: A competent person must be capable of recognizing hazards and authorized to ensure corrections.
  3. An ACM is considered "non-friable" when: A. It's coated in paint B. It cannot be pulverized by hand pressure C. It has no visible fibers D. It’s in good condition Rationale: Non-friable ACMs are less likely to release fibers unless disturbed or damaged.