Safety Consulting San Bernardino County

A contractor building or re-roofing a San Bernardino County distribution center can work under two heat standards on the same job. Inside an enclosed, unconditioned warehouse shell, 8 CCR 3396 applies from 82 degrees, while the crew on the roof or in the yard works under the outdoor standard, 8 CCR 3395. Tunnel work goes to Cal/OSHA's Mining and Tunneling Unit, which keeps one of its three district offices in San Bernardino. The county is defined by logistics, with warehousing, trucking and courier work more concentrated here than in California as a whole or in any other county we serve. M Squared Safety Solutions, Inc. builds programs for San Bernardino County contractors and employers from Chino to Barstow. Call 949-954-6581.

Who you'll work with: M Squared Safety is run by Matt Horovitz from our San Clemente office, with twenty plus years managing contractor safety programs. More about us.

Three Cal/OSHA offices in one building

Enforcement for the whole county runs through the San Bernardino District Office, 464 W. 4th Street, Suite 332, San Bernardino, (909) 383-4321, under the Region 3 Santa Ana Regional Office, per the Cal/OSHA district office directory. Chino, Ontario, Rancho Cucamonga, Fontana, Rialto, Victorville, Hesperia and Barstow all return it in DIR's office lookup, so one office covers both the valley industrial belt and the high desert. We take consulting work anywhere in the county, valley and high desert alike.

The same building houses the Mining and Tunneling Unit San Bernardino District Office, Suite 354, (909) 383-6782, one of only three M&T district offices statewide alongside Sacramento and Van Nuys. It reports to the M&T Principal Safety Engineer in Sacramento, not to the Region 3 Regional Manager. Consultation Region 6, serving Inyo, Riverside and San Bernardino counties, is in Suite 339, per DIR's consultation office listing.

The industries that shape the risk

In BLS QCEW 2025 data, warehousing and storage employs 67,058 people across 477 establishments. Truck transportation adds 22,486 jobs across 2,444 establishments and couriers 16,351. The transportation and warehousing sector totals 118,710 jobs. Nonmetallic mineral mining and quarrying employs 1,084 across 20 establishments, nonmetallic mineral product manufacturing such as cement, concrete and aggregate processing runs to 100 establishments, and primary metal manufacturing employs 2,709. Crop production is small, at 1,132 jobs.

The Title 8 sections that follow

• Powered industrial trucks. 8 CCR 3650, with sections 3662, 3664, 3668, 5146, 5155 and 5164, battery charging under 5185 (see our charging area page for lithium-ion packs), and 8 CCR 3656 for order pickers, as listed in Cal/OSHA's warehousing and storage fact sheet.
• Indoor heat. 8 CCR 3396 applies at 82 degrees, with full controls at 87 degrees. It expressly refuses to exempt shipping or intermodal containers during loading, unloading or related work, which is directly on point for the county's intermodal yards. In the high desert, measure building interiors rather than assume.
• Radiant heat in metal plants. Molten metal and furnaces create exactly the high radiant heat area that drops the full 3396 requirements from 87 degrees to 82 degrees.
• Outdoor heat for drivers. 8 CCR 3395 applies its high-heat procedures to transportation or delivery of heavy materials, such as freight, cargo, lumber and furniture, except for employment that consists of operating an air-conditioned vehicle and does not include loading or unloading. A driver who loads or unloads is in scope regardless of cab air conditioning.
• Mines and quarries. The M&T Unit's stated scope is tunnels under construction, underground mines, surface mines and quarries, with its own personnel and certification programs. That work sits outside the general district office's normal remit. Confirm with the unit which of its district offices covers your site.

Labor regulators are active here too. The California Labor Commissioner's June 2024 citation of Amazon for $5,901,700 over written quota notice under AB 701 reached a site in Redlands, per DIR. That was Labor Commissioner enforcement, not Cal/OSHA.

How M Squared helps San Bernardino County employers

• Written programs. An Injury and Illness Prevention Program under 8 CCR 3203, the most frequently cited Cal/OSHA standard, a heat illness plan that covers indoor work under 3396 and outdoor work under 3395, Hazard Communication, an Emergency Action Plan, and for contractors a Code of Safe Practices and site-specific plans.
• Documented inspections across multiple sites, with findings, photographs and closure tracking, so a program written for Ontario still holds up in Barstow.
• Fractional EHS on a monthly retainer, and on-site safety staffing.
• Training, including OSHA 10-Hour and OSHA 30-Hour Construction.
• Help after a serious injury. We help you make the 8 hour report to Cal/OSHA, prepare for an inspection by the San Bernardino District Office, or the M&T Unit where it has jurisdiction, and assemble the documents the inspector requests.

Equipment for large roof scopes is available through our equipment rentals.

Background reading: California IIPP requirements. For facility managers: carbon monoxide detection for parking garages and repair shops and hydrogen monitoring in battery rooms and data centers.

San Bernardino County is part of our Southern California service area. To talk it through, book a call.

Common questions

Who inspects a quarry or surface mine in San Bernardino County?

The Cal/OSHA Mining and Tunneling Unit, whose scope covers tunnels under construction, underground mines, surface mines and quarries. Its San Bernardino District Office is at 464 W. 4th Street, Suite 354. Confirm with the unit which district office covers your site.

Do our truck drivers fall under the outdoor heat standard?

If they load or unload, yes. 8 CCR 3395 excludes only employment that consists of operating an air-conditioned vehicle and does not include loading or unloading.

Does the indoor heat standard apply to container loading at an intermodal yard?

It can. 8 CCR 3396 applies from 82 degrees and does not exempt shipping or intermodal containers during loading, unloading or related work.

Is the high desert covered by a different Cal/OSHA office?

No. Victorville and Barstow return the same San Bernardino District Office as Chino and Fontana.

Can one safety program cover sites from Chino to Barstow?

Yes, if it is written for both. The heat plan has to cover indoor work under 8 CCR 3396 and outdoor work under 8 CCR 3395, and the inspection program has to reach every site, with findings, photographs and closure tracking for each. One San Bernardino District Office covers the whole county, valley and high desert.

What should we do after a serious injury in San Bernardino County?

The report to Cal/OSHA is due within 8 hours of when you knew, or with diligent inquiry would have known, under 8 CCR 342, and our serious injury reporting guide covers what counts. Call us the same day at 949-954-6581. We help you report it to Cal/OSHA, prepare for the inspection, and pull together the documents the inspector requests.

M Squared Safety Solutions, Inc., 981 Calle Negocio Suite 200, San Clemente, CA 92673, 949-954-6581.