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California / Toxic Substances Control / Senior Hazardous Substances Engineer

Job-title file

Senior Hazardous Substances Engineer

Design, analyze, and oversee technical systems or infrastructure, ensuring they meet specifications and codes.

73 employees hold this title in Toxic Substances Control. Median total compensation for the role is $144,673, above the department median of $102,059.

Employees
73
Total payroll
$9.9M
Role median
$144,673
Agency median
$102,059
Comparison
Above

What the records show

Role pay distribution

Pay distribution for this role

$7,435$176,226+

Hover a bar for its range; click to filter the list below.

How total compensation varies among the 73 people in this role. Even for one job title, pay differs with seniority, step, overtime, and tenure. Each bar is a pay range; the far-right bar collects the highest earners.

Compared with the local labor market

Senior Hazardous Substances Engineer pay vs. California

Across all employers in California, the median wage for Environmental Engineers — about 4,550 people — is $130,410. Toxic Substances Control pays a median base salary of $142,703 for this role, 9% above that figureabout the 67th percentile of local pay for the occupation.

Where Toxic Substances Control sits in the local pay range

10th
25th
Median
75th
90th
$79,790
$95,950
$130,410
$148,650
$170,790
Toxic Substances Control median · $142,703

The bar is the range of annual wages for Environmental Engineers across every employer in California, from the 10th to the 90th percentile, with the middle 50% highlighted. The marker shows Toxic Substances Control’s median base salary for this role. Both figures are base pay only.

And across the country

Nationwide, the median wage for Environmental Engineers — about 38,340 people — is $107,110. Toxic Substances Control’s median base salary is 33% above that national figure, about the 79th percentile of pay for the occupation nationally.

10th
25th
Median
75th
90th
$69,990
$83,570
$107,110
$134,420
$162,220
Toxic Substances Control median · $142,703

Local and national wages differ for reasons beyond how well a job pays — cost of living, the mix of employers, and local demand for the occupation all move the California range relative to the national one.

Computed over the 68 of 73 people in this role paid at least $25,000in base salary. The rest are part-year or part-time records, whose actual pay isn’t comparable to a full-time annual wage.

Median total compensation for this role at Toxic Substances Control is $144,673, which includes overtime and employer-paid benefits. The benchmark above excludes both, so total compensation is deliberately not compared against it.

Benchmark: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025). BLS Occupational Employment and Wage Statistics (OEWS) covers all employers in the area — private, non-profit, and government alike — so this is a comparison against the whole local labor market for the occupation, not against private-sector pay. OEWS wages are straight-time pay and exclude overtime, shift differentials, and employer-paid benefits, so the government figure shown here is base pay on the same basis. Total compensation is not comparable to it. Job titles are matched to the closest standard occupation, so the comparison is between similar work rather than an identical job classification.

Record list

Employees with this title

Page 1

Henry Chui

Senior Hazardous Substances Engineer/Toxic Substances Control

2023 total comp
$14,196
Base pay
$14,196
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$14,196
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Alameda
Middle name
C

Source-specific fields

Base Pay
$13,219
Cs/csu
Cs
Position Number
8106523725010
Salary Total
$14,196
Total Pay
$14,196

Henry Chui holds the role of Senior Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2023, their total compensation was $14,196. Union affiliation: R09.

Evelia Rodriguez

Senior Hazardous Substances Engineer/Toxic Substances Control

2024 total comp
$7,435
Base pay
$7,435
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$7,435
Employment type
Intermittent
Union / bargaining unit
R09
Work county
Sacramento
Middle name
J

Source-specific fields

Base Pay
$13,219
Cs/csu
Cs
Position Number
8109313725901
Salary Total
$76
Total Pay
$7,435

Evelia Rodriguez is a Senior Hazardous Substances Engineer at Toxic Substances Control. They work intermittent. 2024 total compensation came to $7,435. Their bargaining unit is R09.