California lead exposure limits require a task-specific review

October 7, 2026

California's updated general-industry and construction lead standards generally set an airborne permissible exposure limit (PEL) of 10 µg/m³ and an action level of 2 µg/m³, both calculated as eight-hour time-weighted averages. The standards became effective January 1, 2025 after Standards Board approval on February 15, 2024.

These requirements are already in force. EHS teams reviewing a lead assessment need to identify the applicable industry standard and any task-specific exception. APT's record of California's lead-standard changes brings together the limits and staged provisions.

Construction abrasive blasting has a temporary exception

Title 8 section 1532.1(c)(1) sets the general construction PEL at 10 µg/m³. Until January 1, 2030, employees conducting abrasive blasting have a temporary PEL of 25 µg/m³ as an eight-hour time-weighted average. The exception is specific to that construction task.

The construction action level remains 2 µg/m³ as an eight-hour time-weighted average. Section 1532.1(d) addresses exposure assessment and interim protection for specified tasks. Monitoring evaluates exposure without regard to respirator use; subsection (c)(2) separately describes the conditions for considering respirator protection when determining PEL compliance.

General industry uses a separate standard

Section 5198 applies to occupational lead exposure within its scope and excludes construction and agriculture. Its general PEL is 10 µg/m³, with a 2 µg/m³ action level.

For selected lead-acid battery processes, subsection (e)(1)(C) specifies separate engineering control air limits (SECALs). Employers must apply the associated engineering and work practice controls and supplement them with respiratory protection as required to control exposure to the PEL. Those process-specific provisions need to remain separately identified in the exposure assessment.

Specified general-industry hygiene provisions phased in on January 1, 2026. Under subsection (i), the phase included change rooms, showers and lunchrooms for employees whose unadjusted airborne exposures are above the PEL but no greater than 50 µg/m³, subject to each provision's conditions.

Checking the assessment and control records

APT's practical interpretation is to record the jurisdiction, industry standard and work task beside each applicable limit. For construction abrasive blasting, that record should include the temporary limit's end date. For battery processes, it should identify any applicable SECAL and the controls used.

Teams should also confirm that personal sampling represents the required full-shift exposure and review the relevant hygiene and medical-surveillance provisions. A single limit field can omit the task and process distinctions needed to interpret a result.

Consult APT's industrial hygiene regulatory tracker for related exposure-limit developments.