C33 - C-33 California Painting Contractor License California Painting Contractor Safety 1

Question 1

Under Cal/OSHA, what is the maximum permissible exposure limit (PEL) for lead in the air of a painting worksite over an 8-hour time-weighted average?

Accepted Answer

50 micrograms per cubic meter (μg/m³)

Answer

Cal/OSHA Title 8 Section 1532.1 sets the PEL for lead at 50 μg/m³ as an 8-hour TWA. Contractors disturbing lead-based paint must monitor exposures and implement engineering controls, work practice controls, and PPE when this limit is approached or exceeded.

Question 2

A C-33 contractor assigns workers to sand and scrape exterior paint on a pre-1978 residential building. Before work begins, what action is required under California's lead regulations?

Accepted Answer

Conduct initial air monitoring or use historical data to determine employee lead exposure

Answer

Cal/OSHA Title 8 Section 1532.1 requires the employer to determine employee exposure to lead through initial air monitoring or by relying on objective data before disturbing potentially lead-containing coatings. This assessment drives all subsequent controls and PPE decisions.

Question 3

When using a portable ladder on a painting job, Cal/OSHA requires that the ladder be placed so that the horizontal distance from the base to the wall is what fraction of the ladder's working length?

Accepted Answer

One-quarter (1:4 ratio)

Answer

Cal/OSHA Title 8 Section 3276 specifies the 4:1 rule: for every four feet of ladder height, the base must be placed one foot away from the structure. This angle provides the correct balance between stability at the base and support at the top.

Question 4

A C-33 painting crew is working in a confined space where solvent-based coatings are being applied. Under Cal/OSHA, the atmosphere must be tested for oxygen content before entry. What oxygen concentration range is considered safe for entry?

Accepted Answer

19.5% to 23.5%

Answer

Cal/OSHA Title 8 Section 5157 defines a safe atmosphere in a permit-required confined space as having an oxygen concentration between 19.5% and 23.5%. Below 19.5% is oxygen-deficient and above 23.5% is oxygen-enriched, both creating serious hazards.

Question 5

Under Cal/OSHA's Hazard Communication standard (Title 8 Section 5194), a C-33 contractor must ensure that Safety Data Sheets (SDS) for all hazardous paint products are:

Accepted Answer

Readily accessible to employees during each work shift in their work area

Answer

Cal/OSHA's HazCom standard requires that SDS be immediately accessible to employees during their work shift in the area where hazardous chemicals are used. Locking them in an office or keeping them off-site does not satisfy this requirement.

C33 - C-33 California Painting Contractor License Practice Test

C33 - C-33 California Painting Contractor License Practice Test

C33 - C-33 California Painting Contractor License California Painting Contractor Safety 1