CSLB Class A — General Engineering (Trade Exam) — All Questions

At what angle may conduit enter a pull box or vault under the Caltrans electrical specification?

• a.At less than 20 degrees from the vertical or horizontal axis✓
• b.At 45 degrees to the box axis, with no restriction on spacing
• c.At 90 degrees to the box axis, with bends of a tight radius
• d.At a steep angle, if the opening is sealed against moisture and rodents

Conduits must enter pull boxes and vaults at an angle less than 20 degrees from either the vertical or horizontal axis. Not "At a steep angle, if the opening is sealed against moisture and rodents": an angle limit is stated. Not "At 45 degrees to the box axis, with no restriction on spacing": this exceeds the stated limit. Not "At 90 degrees to the box axis, with bends of a tight radius": the specification limits deviation from the axis.Caltrans Standard Specifications (2025) 87-1.03B(3)(b)(ii)

A wall is being left standing during demolition. When may a wall section more than one story or 12 feet high stand alone without lateral bracing?

• a.Whenever the foreman believes it is stable enough, after a visual check
• b.Only if a California-registered civil engineer has substantiated its capability to the Division✓
• c.Not even with engineering data submitted to the Division by the owner
• d.Yes, if the wall is concrete and has been checked for cracks

No wall section over one story or 12 feet high may stand alone without lateral bracing, unless a registered civil engineer has submitted data to the Division. Not "Whenever the foreman believes it is stable enough, after a visual check": engineering data must be submitted. Not "Yes, if the wall is concrete and has been checked for cracks": material alone does not remove the bracing rule. Not "Not even with engineering data submitted to the Division by the owner": the rule allows it with engineering substantiation.Cal. Code Regs. tit. 8, 1735(m)(1)

A floor has been weakened by demolition work. What does Cal/OSHA require?

• a.It must be painted red and left in place until demolition ends
• b.It must be shored to safely support the intended imposed load✓
• c.It must be removed at the end of the week by the demolition crew
• d.It may be used as is if workers walk lightly and keep off the edge

Floors weakened or otherwise made unsafe by demolition operations shall be shored to safely support the intended imposed load. Not "It may be used as is if workers walk lightly and keep off the edge": weakened floors must be shored. Not "It must be painted red and left in place until demolition ends": marking does not give support. Not "It must be removed at the end of the week by the demolition crew": shoring is required before use.Cal. Code Regs. tit. 8, 1735

Exterior wall openings on floors of a building being demolished must be protected to what height, except on the ground floor and the floor being demolished?

• a.Not less than 10 feet
• b.No protection is required
• c.Not less than 12 inches
• d.Not less than 42 inches✓

Exterior wall openings on all floors are protected to a height of not less than 42 inches, except on the ground floor and the floor being demolished. Not "Not less than 12 inches": too low to prevent a fall. Not "Not less than 10 feet": far above the stated height. Not "No protection is required": the rule requires protection.Cal. Code Regs. tit. 8, 1735(k)

Areas of aggregate base that do not meet the described thickness must be handled how on Caltrans work?

• a.Reported at the end of the contract, in the final estimate
• b.Left alone if the paving crew agrees that the surface will work
• c.Covered with extra pavement to make up the missing depth
• d.Corrected, or a payment deduction requested if paid by volume✓

Areas that do not comply with the described thickness are corrected, or a payment deduction is requested if base is paid for by volume. Not "Left alone if the paving crew agrees that the surface will work": thickness noncompliance must be dealt with. Not "Covered with extra pavement to make up the missing depth": extra pavement does not fix base thickness. Not "Reported at the end of the contract, in the final estimate": correction is required during the work.Caltrans Standard Specifications (2025) 26-1.03E

What is the largest compacted thickness allowed for any one layer of aggregate base?

• a.0.50 foot✓
• b.0.05 foot
• c.1.00 foot
• d.2.00 feet

The compacted thickness of any one layer must not exceed 0.50 foot. Not "1.00 foot": double the stated maximum. Not "0.05 foot": that is the grade tolerance, not the layer limit. Not "2.00 feet": far beyond the stated maximum.Caltrans Standard Specifications (2025) 26-1.03D

On Caltrans work, how much aggregate base does one aggregate gradation and sand equivalent test represent at most?

• a.One truckload of the delivered material on the job
• b.5,000 cubic yards or a week's production, whichever is larger
• c.No more than 500 cubic yards or 1 day's production, whichever is smaller✓
• d.The entire project quantity of the base, tested one time

Each gradation and sand equivalent test represents no more than 500 cubic yards of base or 1 day's production, whichever is smaller. Not "The entire project quantity of the base, tested one time": a single test would not control a long job. Not "5,000 cubic yards or a week's production, whichever is larger": the limits are smaller and the lesser applies. Not "One truckload of the delivered material on the job": the stated limit is far larger than one load.Caltrans Standard Specifications (2025) 26-1.01D(3)

How closely must the finished aggregate base surface match the engineer's grade?

• a.Within 0.25 foot
• b.Within 0.5 foot
• c.Within 0.05 foot✓
• d.To the exact 0.00 foot

The finished AB surface must not vary more than 0.05 foot from the established grade. Not "Within 0.5 foot": ten times looser than the stated tolerance. Not "Within 0.25 foot": far looser than the tolerance. Not "To the exact 0.00 foot": the specification allows a tolerance.Caltrans Standard Specifications (2025) 26-1.03E

Edges of geosynthetic material under aggregate base must overlap by how much?

• a.They are butted with no overlap
• b.At least 2 inches
• c.At least 2 feet✓
• d.At least 20 feet

Adjacent edges of geosynthetic material are overlapped at least 2 feet. Not "At least 2 inches": too small to keep the sheets joined. Not "At least 20 feet": far greater than needed. Not "They are butted with no overlap": the specification requires an overlap.Caltrans Standard Specifications (2025) 26-1.03C

May equipment be driven directly on filter fabric placed under aggregate base?

• a.Yes, if they travel under 10 mph and avoid sharp turns
• b.No, vehicles may run only on base that has been placed over the fabric✓
• c.Yes, if a thin layer of sand covers the fabric first
• d.Yes, if the vehicles have rubber tires and light loads

The specification says not to operate equipment or vehicles directly on filter fabric. Not "Yes, if the vehicles have rubber tires and light loads": the rubber-tire allowance applies to geogrid, not fabric. Not "Yes, if they travel under 10 mph and avoid sharp turns": the speed allowance applies to geogrid. Not "Yes, if a thin layer of sand covers the fabric first": fabric may be driven on only after base covers it, not by direct operation.Caltrans Standard Specifications (2025) 26-1.03C

Under what condition may vehicles operate directly on geogrid placed under aggregate base?

• a.Yes, since geogrid is much stronger than filter fabric
• b.If the geogrid has been wet for 72 hours and the subgrade is firm
• c.If they have rubber tires, run under 10 mph and avoid sudden braking and sharp turns✓
• d.If they have steel tracks and run fast to avoid sinking into the base

Equipment may operate directly on geogrid only if rubber-tired, under 10 mph and avoiding sudden braking and sharp turns, or once 0.35 foot of base is compacted on it. Not "If they have steel tracks and run fast to avoid sinking into the base": these conditions are not allowed. Not "If the geogrid has been wet for 72 hours and the subgrade is firm": wetness is not a condition. Not "Yes, since geogrid is much stronger than filter fabric": direct operation is restricted.Caltrans Standard Specifications (2025) 26-1.03C

On Caltrans work paid by volume, how is aggregate base placed to fill low areas of the subgrade handled in payment?

• a.It is paid if the engineer is absent when it is placed
• b.It is not included in the payment quantity✓
• c.It is paid as imported borrow at the borrow unit price
• d.It is paid at double the unit price for the extra work

The payment quantity does not include aggregate base used to fill low areas of the subgrade. Not "It is paid at double the unit price for the extra work": the specification excludes it from payment. Not "It is paid as imported borrow at the borrow unit price": base used to fill low areas is not measured or paid as imported borrow. Not "It is paid if the engineer is absent when it is placed": payment does not depend on supervision.Caltrans Standard Specifications (2025) 26-1.04

Aggregate base over biaxial geogrid is being compacted. Which compaction method does Caltrans allow?

• a.A vibratory plate compactor on each lift
• b.No compaction until the base cures in place for a full week
• c.A smooth-wheeled or rubber-tired roller, with no vibratory devices✓
• d.A vibratory sheepsfoot roller set at low amplitude

If biaxial geogrid is shown, base is compacted with a smooth-wheeled or rubber-tired roller and vibratory devices are not used. Not "A vibratory sheepsfoot roller set at low amplitude": vibratory devices are not allowed over geogrid. Not "A vibratory plate compactor on each lift": vibration may displace the geogrid. Not "No compaction until the base cures in place for a full week": base is compacted in layers as placed.Caltrans Standard Specifications (2025) 26-1.03E

How much geosynthetic material may be placed ahead of the base under Caltrans section 26-1.03C?

• a.As much as one roll holds, with no limit
• b.No material until the base is complete
• c.A whole month of material
• d.No more than can be covered in 72 hours✓

The contractor may not place more geosynthetic material than can be covered in 72 hours. Not "A whole month of material": exposed material is damaged by weather and traffic. Not "No material until the base is complete": placement precedes base placement. Not "As much as one roll holds, with no limit": a 72-hour limit applies.Caltrans Standard Specifications (2025) 26-1.03C

What kind of container must hold the first-aid kit that every employer on a construction project provides?

• a.A weatherproof container✓
• b.A vehicle glove box with a latch
• c.A locked steel cabinet in the main office
• d.A cardboard box kept under the foreman's seat in the truck

Every employer working on a construction project must provide at least one first-aid kit in a weatherproof container. Not "A locked steel cabinet in the main office": the kit must be where work is, in a weatherproof container. Not "A cardboard box kept under the foreman's seat in the truck": cardboard is not weatherproof. Not "A vehicle glove box with a latch": the rule requires a weatherproof container for the kit.Cal. Code Regs. tit. 8, 1512(c)(1)

Above what height of fall exposure must personal fall arrest, restraint or positioning systems be worn at an unprotected edge under California's general construction rule?

• a.In excess of 30 feet
• b.In excess of 3 feet
• c.In excess of 7 1/2 feet✓
• d.In excess of 15 feet

Systems are worn by employees exposed to falling in excess of 7 1/2 feet from unprotected sides and edges, openings and similar locations. Not "In excess of 3 feet": lower than the state trigger. Not "In excess of 15 feet": higher than the state trigger. Not "In excess of 30 feet": far higher than the state trigger.Cal. Code Regs. tit. 8, 1670(a)

What height range is specified for the top rail of a railing?

• a.Not less than 42 inches or more than 45 inches✓
• b.12 to 18 inches above the working surface
• c.60 to 72 inches above the working surface
• d.30 to 36 inches above the working surface

A top rail must be not less than 42 inches or more than 45 inches in height above the walking surface. Not "12 to 18 inches above the working surface": too low to prevent a fall. Not "60 to 72 inches above the working surface": too high for a standard top rail. Not "30 to 36 inches above the working surface": below the minimum height.Cal. Code Regs. tit. 8, 1620(a)(1)

At what haulage capacity must a dirt-hauling vehicle carry an automatic backup warning device?

• a.A vehicle that holds more than 1 cubic foot of material
• b.25 cubic yards or more of haulage capacity per load
• c.2 1/2 cubic yards or more of haulage capacity✓
• d.Vehicles over 10 tons gross weight when loaded

Every vehicle with a haulage capacity of 2 1/2 cubic yards or more hauling dirt, rock, concrete or other material needs an automatic backing warning device. Not "A vehicle that holds more than 1 cubic foot of material": far smaller than the stated threshold. Not "25 cubic yards or more of haulage capacity per load": far larger than the stated threshold. Not "Vehicles over 10 tons gross weight when loaded": the rule is stated by haulage capacity, not tonnage.Cal. Code Regs. tit. 8, 1592(a)

A crew member says an overhead line is dead because it looks old and unused. How does Cal/OSHA treat it?

• a.As de-energized if no sparks are seen when a crew member touches it
• b.As de-energized if it sags between the poles and has no insulators
• c.As de-energized if the foreman says so after a visual check
• d.As energized until the owner verifies it is de-energized and visibly grounded at the site✓

Any overhead conductor is considered energized until the person owning or operating it verifies it is not and it is visibly grounded at the work site. Not "As de-energized if it sags between the poles and has no insulators": sag does not show a line is dead. Not "As de-energized if the foreman says so after a visual check": the owner or operator must confirm it. Not "As de-energized if no sparks are seen when a crew member touches it": absence of visible effects proves nothing.Cal. Code Regs. tit. 8, 2946(d)

A 12-foot lateral shift is needed on a highway posted at 50 mph. The merging taper formula is L = WS at 45 mph or more, and a shifting taper is about one-half L. About how long is the shifting taper?

• a.About 10 feet
• b.About 200 feet
• c.About 600 feet
• d.About 300 feet✓

L = 12 x 50 = 600 feet, and a shifting taper is approximately one half of L, or 300 feet. Not "About 600 feet": that is the full merging taper length L. Not "About 200 feet": that is one third of L, the shoulder taper. Not "About 10 feet": far shorter than the guidance.CA MUTCD 2026, Table 6B-4, Section 6B.08

What is the maximum length of a downstream taper in a temporary traffic control zone?

• a.10 feet
• b.1,000 feet
• c.100 feet✓
• d.It must equal the merging taper

The CA MUTCD table note states the maximum downstream taper length is 100 feet. Not "1,000 feet": far longer than the stated maximum. Not "10 feet": far shorter than the stated maximum. Not "It must equal the merging taper": the downstream taper is capped separately.CA MUTCD 2026, Table 6B-3

At what temperature or above must an employer implement high-heat procedures under the heat illness standard?

• a.95 degrees Fahrenheit✓
• b.110 degrees Fahrenheit
• c.65 degrees Fahrenheit
• d.80 degrees Fahrenheit

High-heat procedures are implemented when the temperature equals or exceeds 95 degrees Fahrenheit; shade is required above 80. Not "65 degrees Fahrenheit": far below the stated trigger. Not "80 degrees Fahrenheit": that is the trigger for providing shade. Not "110 degrees Fahrenheit": above the stated trigger.Cal. Code Regs. tit. 8, 3395(e)

Which employees must wear head protection under Cal/OSHA's head protection section?

• a.Only those working above 15 feet, where a fall could injure the head
• b.Only equipment operators, since they sit under the overhead guard
• c.Those at risk of head injury from flying or falling objects, or electric shock and burns✓
• d.Only visitors to the site, who are not trained for the hazards present

Employees in locations with a risk of head injury from flying or falling objects or electric shock and burns wear head protection. Not "Only those working above 15 feet, where a fall could injure the head": height is not the stated test. Not "Only visitors to the site, who are not trained for the hazards present": employees at risk must wear it. Not "Only equipment operators, since they sit under the overhead guard": any employee exposed to the hazard must wear it.Cal. Code Regs. tit. 8, 3381(a)

A Type II protective helmet is intended to reduce the force of a blow to which part of the head?

• a.The top or sides✓
• b.The top only
• c.The face
• d.The back of the neck

Type II helmets reduce the force of impact from a blow to the top or sides of the head; Type I only to the top. Not "The top only": that describes Type I. Not "The back of the neck": not what the type designation covers. Not "The face": the impact type refers to the head, not the face.Cal. Code Regs. tit. 8, 3381(c)(1)

Hard hats are needed only to reduce the danger from flying or falling objects, with no risk of contact with conductors. Which ANSI classes are allowed?

• a.Class C, E or G✓
• b.Class E only
• c.Class G only
• d.No class designation applies

Where helmets only reduce the danger from flying or falling objects, they must be ANSI Z89.1 Class C, E or G. Not "Class E only": Class E alone is required only for conductors over 600 volts. Not "Class G only": other classes are also allowed. Not "No class designation applies": helmets carry an electrical class designation.Cal. Code Regs. tit. 8, 3381(c)(2)(A)

A worker who needs vision correction must wear eye protection. Which option meets the rule?

• a.Safety goggles designed to fit over spectacles✓
• b.Sunglasses worn over contact lenses in a dust area
• c.No eye protection, since the glasses are enough
• d.Ordinary spectacles with a clip-on shade lens

Eye protection for workers needing correction is safety spectacles with corrected lenses, goggles designed to fit over spectacles, or goggles with mounted corrective lenses. Not "Ordinary spectacles with a clip-on shade lens": ordinary spectacles are not protective eyewear. Not "Sunglasses worn over contact lenses in a dust area": contact lenses are prohibited in harmful exposure environments. Not "No eye protection, since the glasses are enough": regular glasses are not safety eyewear.Cal. Code Regs. tit. 8, 3382(c)

Contact lenses are prohibited in environments with harmful exposure to materials or light flashes, except when what is established?

• a.A written waiver signed by the worker and kept on file
• b.Special precautionary procedures that carry medical sign-off✓
• c.A tinted lens that blocks the light flashes from the work
• d.A verbal agreement with the foreman before the shift

Contact lens wearing is prohibited in such environments except where medically signed-off special precautionary procedures have been established. Not "A verbal agreement with the foreman before the shift": a medically supervised procedure is required. Not "A written waiver signed by the worker and kept on file": a waiver does not protect the eye. Not "A tinted lens that blocks the light flashes from the work": tint does not satisfy the exception.Cal. Code Regs. tit. 8, 3382(c) Note

Besides falling objects and crushing, which condition calls for foot protection under section 3385?

• a.Work in normally dry locations and on clean floors
• b.Work at a desk or counter indoors
• c.Work indoors on carpeted floors
• d.Work in abnormally wet locations on the site✓

Foot protection is required for exposure to electrical hazards, hot, corrosive or poisonous substances, falling objects, crushing or penetrating actions, or abnormally wet locations. Not "Work indoors on carpeted floors": carpet is not among the listed hazards. Not "Work at a desk or counter indoors": a desk job has no foot injury exposure. Not "Work in normally dry locations and on clean floors": the list names abnormally wet locations.Cal. Code Regs. tit. 8, 3385(a)

A worker's protective gloves are torn through the palm. What does Cal/OSHA's general PPE rule say?

• a.Use it until the end of the shift, then replace it
• b.Defective or damaged PPE shall not be used✓
• c.Use it for light tasks around the site
• d.Tape the tear and continue working

Defective or damaged personal protective equipment shall not be used. Not "Use it until the end of the shift, then replace it": damaged PPE must not be used. Not "Tape the tear and continue working": taping does not make damaged PPE acceptable. Not "Use it for light tasks around the site": the rule is not limited by task weight.Cal. Code Regs. tit. 8, 3380(f)(3)

What must an employer do first to decide what PPE a task needs?

• a.Assess the workplace for hazards that necessitate PPE✓
• b.Ask workers to bring their own without checking
• c.Wait for an injury to appear
• d.Buy the cheapest equipment available

The employer assesses the workplace to determine whether hazards are present that necessitate PPE, then selects PPE that fits each affected employee. Not "Buy the cheapest equipment available": selection follows the hazard assessment. Not "Ask workers to bring their own without checking": the employer selects PPE that protects from identified hazards. Not "Wait for an injury to appear": the assessment comes first.Cal. Code Regs. tit. 8, 3380(f)(1)

What must the employer's written certification of the PPE hazard assessment identify?

• a.The vendor's name and the date the equipment was bought by the employer
• b.The workplace evaluated, the person certifying, and the date of the assessment✓
• c.The cost of the equipment and the date of the purchase order
• d.The number of workers on site and the hours worked each week

The certification identifies the workplace evaluated, the person certifying, the date(s) of the assessment, and that it is a certification of hazard assessment. Not "The cost of the equipment and the date of the purchase order": cost is not a required element. Not "The vendor's name and the date the equipment was bought by the employer": the certification names the workplace, certifier and date. Not "The number of workers on site and the hours worked each week": headcount is not a required element.Cal. Code Regs. tit. 8, 3380(f)(2)

Which topic must PPE training cover?

• a.The price of the PPE and who paid for it last year, by brand
• b.The history of the manufacturer and its product line over the years
• c.The brand of PPE the foreman prefers to buy for the whole crew
• d.The limitations of the PPE and its proper care, maintenance, useful life and disposal✓

Each employee is trained in when and what PPE is necessary, how to don and adjust it, its limitations, and its care, maintenance, useful life and disposal. Not "The price of the PPE and who paid for it last year, by brand": price is not a required training topic. Not "The history of the manufacturer and its product line over the years": company history is not a required topic. Not "The brand of PPE the foreman prefers to buy for the whole crew": brand preference is not a required topic.Cal. Code Regs. tit. 8, 3380(f)(4)

When should hand protection such as gloves not be worn?

• a.Where chemicals are used and a splash could reach the hands
• b.Where cuts are possible from sheet metal or sharp edges
• c.Where there is a danger of entanglement in moving machinery or materials✓
• d.Where the temperature is extreme, either hot or cold

Gloves shall not be worn where there is a danger of the hand protection becoming entangled in moving machinery or materials. Not "Where cuts are possible from sheet metal or sharp edges": cut hazards call for hand protection. Not "Where chemicals are used and a splash could reach the hands": chemical burns call for hand protection. Not "Where the temperature is extreme, either hot or cold": temperature extremes call for hand protection.Cal. Code Regs. tit. 8, 3384(b)

Who must provide ear protection, where the General Industry noise rule requires it, on a construction site?

• a.The employee, at personal cost, from the first day on the job
• b.The CSLB, through the license fee paid by the contractor
• c.The employer, who must also require employees to wear it✓
• d.The equipment manufacturer, when the machine is purchased

Where required by section 5096(b), ear protection is provided by the employer and the employer requires employees to wear it. Not "The employee, at personal cost, from the first day on the job": the employer provides it. Not "The equipment manufacturer, when the machine is purchased": the manufacturer is not the one named. Not "The CSLB, through the license fee paid by the contractor": CSLB does not provide PPE.Cal. Code Regs. tit. 8, 1521

Employees exposed to public vehicular traffic during excavation work must be provided with and wear what?

• a.Warning vests or other garments of reflectorized or high-visibility material✓
• b.A hard hat, for the slow traffic on the street
• c.Dark clothing to avoid attracting attention from the passing drivers
• d.Nothing when a flagger is present at the work site all day

Employees exposed to public vehicular traffic must be provided with, and wear, warning vests or other suitable reflectorized or high-visibility garments. Not "Dark clothing to avoid attracting attention from the passing drivers": dark clothing reduces visibility. Not "A hard hat, for the slow traffic on the street": head protection does not make a worker visible to traffic. Not "Nothing when a flagger is present at the work site all day": the garment rule applies to employees exposed to traffic.Cal. Code Regs. tit. 8, 1541(d)

What is the permissible exposure limit for respirable crystalline silica in Cal/OSHA's construction silica standard?

• a.25 micrograms per cubic meter as an 8-hour TWA
• b.500 micrograms per cubic meter as an 8-hour TWA
• c.50 micrograms per cubic meter as an 8-hour TWA✓
• d.5 micrograms per cubic meter as an 8-hour TWA

No employee may be exposed above 50 micrograms per cubic meter calculated as an 8-hour TWA. Not "5 micrograms per cubic meter as an 8-hour TWA": one tenth of the stated limit. Not "500 micrograms per cubic meter as an 8-hour TWA": ten times the stated limit. Not "25 micrograms per cubic meter as an 8-hour TWA": that is the level below which the standard does not apply.Cal. Code Regs. tit. 8, 1532.3(d)(1)

For a task listed on Table 1 of the silica standard, what must the employer do?

• a.Fully implement the engineering controls, work practices and respiratory protection listed for the task✓
• b.Rely on a dust mask for the whole task, without engineering controls or work practices
• c.Skip the listed controls if the task will take less than 1 hour
• d.Wait for the first air monitoring result before using controls

For each employee on a Table 1 task, the employer fully and properly implements the specified controls unless it assesses and limits exposure by other means. Not "Rely on a dust mask for the whole task, without engineering controls or work practices": Table 1 specifies controls and practices, not a mask alone. Not "Skip the listed controls if the task will take less than 1 hour": no duration exemption is stated here. Not "Wait for the first air monitoring result before using controls": Table 1 lets the employer proceed without monitoring if it follows the table.Cal. Code Regs. tit. 8, 1532.3(c)

What must a written exposure control plan under the silica standard include?

• a.A description of the tasks that expose workers and the controls, practices and respirators used✓
• b.The date of the last inspection and the name of the inspector who made it
• c.A list of the employer's customers and the contracts won in the past year
• d.The company's annual revenue and the equipment budget for the next year

The plan describes tasks involving silica exposure and the engineering controls, work practices and respiratory protection used, among other elements. Not "A list of the employer's customers and the contracts won in the past year": customers are not part of the plan. Not "The date of the last inspection and the name of the inspector who made it": the plan must describe tasks and controls. Not "The company's annual revenue and the equipment budget for the next year": revenue is not part of the plan.Cal. Code Regs. tit. 8, 1532.3(g)

Under the silica standard, what two qualities define a competent person?

• a.Having completed one hour of orientation on the first day of the job
• b.Holding a general contractor's license and a commercial driver license
• c.Able to identify silica hazards and authorized to take prompt corrective measures✓
• d.Being the most senior employee on the crew, with the longest service

A competent person is capable of identifying existing and foreseeable silica hazards and has authorization to take prompt corrective measures. Not "Holding a general contractor's license and a commercial driver license": neither license is the definition. Not "Being the most senior employee on the crew, with the longest service": seniority is not the definition. Not "Having completed one hour of orientation on the first day of the job": the definition is about ability and authority.Cal. Code Regs. tit. 8, 1532.3(b)

Until January 1, 2030, what exposure limit applies to employees conducting abrasive blasting under the lead standard's exception?

• a.500 micrograms per cubic meter as an 8-hour TWA
• b.25 micrograms per cubic meter as an 8-hour TWA✓
• c.10 micrograms per cubic meter as an 8-hour TWA
• d.2 micrograms per cubic meter as an 8-hour TWA

The exception allows up to 25 micrograms per cubic meter calculated as an 8-hour TWA for abrasive blasting until January 1, 2030. Not "10 micrograms per cubic meter as an 8-hour TWA": that is the general PEL, not the abrasive blasting exception. Not "2 micrograms per cubic meter as an 8-hour TWA": that is the action level. Not "500 micrograms per cubic meter as an 8-hour TWA": far above the stated exception.Cal. Code Regs. tit. 8, 1532.1(c)(1)

A concrete vault has one small hatch, is large enough to enter, and is not designed for continuous occupancy. What does it meet?

• a.The definition of an open-air work area
• b.The definition of a confined space✓
• c.The definition of a trench
• d.The definition of a scaffold

A confined space is large enough to enter, has limited or restricted means of entry and exit, and is not designed for continuous occupancy. Not "The definition of a trench": a vault is not a long narrow excavation. Not "The definition of an open-air work area": limited entry and exit means it is not open. Not "The definition of a scaffold": a scaffold is a work platform.Cal. Code Regs. tit. 8, 1951

In the construction confined space article, flammable gas above what share of its lower flammable limit makes an atmosphere hazardous?

• a.50 percent
• b.20 percent
• c.1 percent
• d.10 percent✓

A hazardous atmosphere includes flammable gas, vapor or mist in excess of 10 percent of its lower flammable limit. Not "1 percent": far below the stated figure. Not "50 percent": far above the stated figure. Not "20 percent": that is the excavation figure in section 1541.Cal. Code Regs. tit. 8, 1951

In the construction confined space article, airborne combustible dust may be approximated as being at its lower flammable limit when it does what?

• a.Is visible at 50 feet in daylight on a clear day
• b.Smells of smoke or burnt material in the confined space
• c.Settles on a hard hat after an hour of work in the space
• d.Obscures vision at a distance of 5 feet or less✓

The note says the concentration may be approximated as a condition in which combustible dust obscures vision at 5 feet or less. Not "Is visible at 50 feet in daylight on a clear day": too far for the stated approximation. Not "Smells of smoke or burnt material in the confined space": odor is not the stated approximation. Not "Settles on a hard hat after an hour of work in the space": settled dust does not give the airborne concentration.Cal. Code Regs. tit. 8, 1951

Where does the attendant of a permit-required confined space stay during entry?

• a.Outside the space, until relieved by another attendant✓
• b.At the office, where the entry permit is kept on file for audits
• c.Inside with the entrants, to help immediately if needed
• d.In the vehicle with the engine running and the radio on

The attendant remains outside the permit space during entry operations until relieved by another attendant. Not "Inside with the entrants, to help immediately if needed": the attendant stays out to monitor and summon rescue. Not "At the office, where the entry permit is kept on file for audits": the attendant must be at the space. Not "In the vehicle with the engine running and the radio on": the attendant's post is the space opening.Cal. Code Regs. tit. 8, 1958(a)(4)

What must the employer ensure about the labels on incoming containers of hazardous chemicals?

• a.They are not removed or defaced✓
• b.They are replaced with the company logo
• c.They are removed to save space on the shelf
• d.They are covered with tape for storage

Employers ensure that labels on incoming containers of hazardous chemicals are not removed or defaced. Not "They are replaced with the company logo": labels are kept, not replaced. Not "They are covered with tape for storage": covering a label defeats its purpose. Not "They are removed to save space on the shelf": removal is not permitted.Cal. Code Regs. tit. 8, 5194(f)

A demolition crew finds an old tank on the property that may have held fuel. What does Cal/OSHA require before demolition starts?

• a.Burying the tank in place beneath the new foundation
• b.Cutting into the tank with a torch to open it quickly
• c.Waiting 30 days for the fuel vapors to clear by themselves
• d.Testing and purging, so the hazard is eliminated✓

When hazardous substances are apparent or suspected in tanks or equipment, testing and purging is performed and the hazard eliminated before demolition starts. Not "Cutting into the tank with a torch to open it quickly": hot work on an unpurged tank risks explosion. Not "Burying the tank in place beneath the new foundation": burial does not remove the hazard before demolition. Not "Waiting 30 days for the fuel vapors to clear by themselves": a wait does not eliminate the hazard.Cal. Code Regs. tit. 8, 1735(b)

Under the asbestos NESHAP, the combined regulated asbestos-containing material in a demolition reaches what amount to bring in the full requirements?

• a.At least 26 linear feet or 16 square feet of material in the building
• b.At least 260 linear feet on pipes or 160 square feet on other components✓
• c.A small amount, even a single piece of pipe insulation
• d.At least 2,600 linear feet or 1,600 square feet of material in the building

Full requirements apply at 260 linear feet on pipes, 160 square feet on other components, or 35 cubic feet where length or area could not be measured. Not "At least 26 linear feet or 16 square feet of material in the building": a tenth of the stated amounts. Not "At least 2,600 linear feet or 1,600 square feet of material in the building": ten times the stated amounts. Not "A small amount, even a single piece of pipe insulation": below the amounts, only the notification requirements apply.40 CFR 61.145(a)(1)

After notice of a demolition has been filed under the asbestos NESHAP, the amount of asbestos affected changes by 25 percent. What must the owner or operator do?

• a.Update the notice to show the new amount✓
• b.Cancel the demolition and file a new one
• c.Wait until the next calendar year
• d.Nothing, since changes under 50 percent are ignored

The notice is updated as necessary, including when the amount of asbestos affected changes by at least 20 percent. Not "Nothing, since changes under 50 percent are ignored": an update is required at a 20 percent change. Not "Cancel the demolition and file a new one": no cancellation is required. Not "Wait until the next calendar year": updating is done as necessary at the time.40 CFR 61.145(b)(2)

A building is demolished under a government order because it is structurally unsound and in danger of imminent collapse. When must the asbestos NESHAP notice be given?

• a.No notice is required for a demolition ordered by the government
• b.At least 10 working days before demolition, as for any other demolition
• c.Within 90 days after demolition, once the debris has been removed
• d.As early as possible before, but not later than, the following working day✓

For a demolition ordered under paragraph (a)(3), notice is given as early as possible before, but not later than, the following working day. Not "At least 10 working days before demolition, as for any other demolition": that is the standard notice period, not the emergency order case. Not "Within 90 days after demolition, once the debris has been removed": notice is given before or by the next working day, not months later. Not "No notice is required for a demolition ordered by the government": notification still applies in the ordered-demolition case.40 CFR 61.145(b)(3)(iii)

During demolition planning, which building materials does Cal/OSHA require to be surveyed for asbestos?

• a.Glass windows, door glazing and mirrors on the lower floors
• b.Concrete foundations and slabs on grade at ground level, and footings
• c.Wood framing, trim carpentry and finish flooring in the older buildings
• d.Pipe-covering insulation, steel beam and column fire protection, and HVAC duct work✓

Pipe-covering insulation, steel beam and column fire protection, and heating, ventilating and air-conditioning duct work are surveyed for asbestos. Not "Glass windows, door glazing and mirrors on the lower floors": glass is not among the named materials. Not "Wood framing, trim carpentry and finish flooring in the older buildings": wood framing is not among the named materials. Not "Concrete foundations and slabs on grade at ground level, and footings": foundation concrete is not among the named materials.Cal. Code Regs. tit. 8, 1735(c)