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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

Alfred Wong

Senior Hazardous Substances Engineer/Toxic Substances Control

2023 total comp
$201,890
Base pay
$0
Overtime
$0
Other pay
$201,890
Benefits
$0
Total compensation
$201,890
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Alameda

Source-specific fields

Base Pay
$13,219
Cs/csu
Cs
Position Number
8106523725008
Salary Total
$14,196
Total Pay
$201,890

Alfred Wong holds the role of Senior Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2023, their total compensation was $201,890. Their bargaining unit is R09.

Michael Choe

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$176,226
Base pay
$175,876
Overtime
$0
Other pay
$350
Benefits
$0
Total compensation
$176,226
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Sacramento
Middle name
J

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8106513725018
Salary Total
$14,663
Total Pay
$176,226

Michael Choe works as a Senior Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Michael earned $176,226 in 2025. Their bargaining unit is R09.

Raminder Bola

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$176,226
Base pay
$175,876
Overtime
$0
Other pay
$350
Benefits
$0
Total compensation
$176,226
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Sacramento
Middle name
S

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8106513725306
Salary Total
$14,663
Total Pay
$176,226

Raminder Bola works as a Senior Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Raminder earned $176,226 in 2025. They are represented by R09.

Steven Touchi

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$176,226
Base pay
$175,876
Overtime
$0
Other pay
$350
Benefits
$0
Total compensation
$176,226
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Sacramento
Middle name
R

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8105913725020
Salary Total
$14,663
Total Pay
$176,226

At Toxic Substances Control, Steven Touchi serves as a Senior Hazardous Substances Engineer. They work full-time. Their 2025 pay totaled $176,226. Union affiliation: R09.

Thomas Tse

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$176,201
Base pay
$175,876
Overtime
$0
Other pay
$325
Benefits
$0
Total compensation
$176,201
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Sacramento
Middle name
K

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8105113725012
Salary Total
$14,663
Total Pay
$176,201

Thomas Tse works as a Senior Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Thomas earned $176,201 in 2025. Their bargaining unit is R09.

Tamara Zielinski

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$176,076
Base pay
$175,876
Overtime
$0
Other pay
$200
Benefits
$0
Total compensation
$176,076
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Sacramento
Middle name
S

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8101713725001
Salary Total
$14,663
Total Pay
$176,076

At Toxic Substances Control, Tamara Zielinski serves as a Senior Hazardous Substances Engineer. They work full-time. Their 2025 pay totaled $176,076. Their bargaining unit is R09.

Peter Macnicholl

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$173,463
Base pay
$172,963
Overtime
$0
Other pay
$500
Benefits
$0
Total compensation
$173,463
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Sacramento
Middle name
J

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8101513725001
Salary Total
$14,663
Total Pay
$173,463

At Toxic Substances Control, Peter Macnicholl serves as a Senior Hazardous Substances Engineer. They work full-time. Their 2025 pay totaled $173,463. They are represented by R09.

Whitney Smith

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$169,595
Base pay
$169,595
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$169,595
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Alameda
Middle name
L

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8101723725002
Salary Total
$14,126
Total Pay
$169,595

Whitney Smith is a Senior Hazardous Substances Engineer at Toxic Substances Control. They work full-time. 2025 total compensation came to $169,595. Their bargaining unit is R09.

Moises Carvalho

Senior Hazardous Substances Engineer/Toxic Substances Control

2025 total comp
$168,665
Base pay
$168,315
Overtime
$0
Other pay
$350
Benefits
$0
Total compensation
$168,665
Employment type
Full-Time
Union / bargaining unit
R09
Work county
Alameda
Middle name
N

Source-specific fields

Base Pay
$14,305
Cs/csu
Cs
Position Number
8105123725001
Salary Total
$14,126
Total Pay
$168,665

Moises Carvalho holds the role of Senior Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2025, their total compensation was $168,665. They are represented by R09.