California / Toxic Substances Control / Hazardous Substances Engineer

Job-title file

Hazardous Substances Engineer

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

135 employees hold this title in Toxic Substances Control. Median total compensation for the role is $110,456, above the department median of $102,059.

Employees: 135
Total payroll: $14.2M
Role median: $110,456
Agency median: $102,059
Comparison: Above

What the records show

Role pay distribution

Pay distribution for this role

-$4,596$149,638+

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

How total compensation varies among the 135 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

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 $112,965 for this role, 13% below that figure — about the 37th 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 · $112,965

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 5% above that national figure, about the 55th 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 · $112,965

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 124 of 135 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 $110,456, 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.

Compare departments

This role across California

Hazardous Substances Engineer is held in 2 California departments. In Toxic Substances Control, the median of $110,456 ranks #1 of 2.

Highest-paying departments for this role

Office of Secty Envirmtl Protect

$55,716 · 1

Median total compensation for the Hazardous Substances Engineer role in other Californiadepartments (highest first). Each bar links to that department’s page for this role.

Record list

Employees with this title

Page 1

Matthew Kasjaka

Hazardous Substances Engineer/Toxic Substances Control

2023 total comp

$133,523

Base pay: $131,500
Overtime: $1,423
Other pay: $600
Benefits: $0
Total compensation: $133,523
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: J

Source-specific fields

Base Pay: $11,567
Cs/csu: Cs
Position Number: 8105113726373
Salary Total: $11,567
Total Pay: $133,523

At Toxic Substances Control, Matthew Kasjaka serves as a Hazardous Substances Engineer. They work full-time. Their 2023 pay totaled $133,523. Their bargaining unit is R09.

Jovanne Villamater

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$132,984

Base pay: $132,634
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $132,984
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Alameda
Middle name: I

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105123726001
Salary Total: $11,047
Total Pay: $132,984

Jovanne Villamater works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Jovanne earned $132,984 in 2025. Their bargaining unit is R09.

Antonio Natera

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$132,636

Base pay: $132,286
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $132,636
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Alameda

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105423726001
Salary Total: $11,131
Total Pay: $132,636

Antonio Natera works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Antonio earned $132,636 in 2025. Their bargaining unit is R09.

Mckinley Lewis Jr

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$132,219

Base pay: $132,044
Overtime: $0
Other pay: $175
Benefits: $0
Total compensation: $132,219
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105113726002
Salary Total: $11,020
Total Pay: $132,219

Mckinley Lewis Jr is a Hazardous Substances Engineer at Toxic Substances Control. They work full-time. 2025 total compensation came to $132,219. Their bargaining unit is R09.

Lisa Holcomb

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$132,151

Base pay: $131,976
Overtime: $0
Other pay: $175
Benefits: $0
Total compensation: $132,151
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: K

Source-specific fields

Base Pay: $10,761
Cs/csu: Cs
Position Number: 8105913726207
Salary Total: $11,030
Total Pay: $132,151

Lisa Holcomb is a Hazardous Substances Engineer at Toxic Substances Control. They work full-time. 2025 total compensation came to $132,151. Union affiliation: R09.

Elly Daoud

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$131,571

Base pay: $131,396
Overtime: $0
Other pay: $175
Benefits: $0
Total compensation: $131,571
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: P

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8106513726082
Salary Total: $11,020
Total Pay: $131,571

Elly Daoud works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Elly earned $131,571 in 2025. They are represented by R09.

Lung-Yin Tai

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$131,571

Base pay: $131,396
Overtime: $0
Other pay: $175
Benefits: $0
Total compensation: $131,571
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8106513726165
Salary Total: $11,020
Total Pay: $131,571

Lung-Yin Tai is a Hazardous Substances Engineer at Toxic Substances Control. They work full-time. 2025 total compensation came to $131,571. They are represented by R09.

Mellan Songco

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$130,965

Base pay: $130,790
Overtime: $0
Other pay: $175
Benefits: $0
Total compensation: $130,965
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: P

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105913726047
Salary Total: $10,895
Total Pay: $130,965

Mellan Songco holds the role of Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2025, their total compensation was $130,965. Their bargaining unit is R09.

Jessica Duffey

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$130,771

Base pay: $130,421
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $130,771
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Los Angeles
Middle name: M

Source-specific fields

Base Pay: $11,805
Cs/csu: Cs
Position Number: 8105143726001
Salary Total: $11,451
Total Pay: $130,771

Jessica Duffey is a Hazardous Substances Engineer at Toxic Substances Control. They work full-time. 2025 total compensation came to $130,771. Their bargaining unit is R09.

Brett Leary

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,984

Base pay: $129,634
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $129,984
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: A

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105113726006
Salary Total: $10,797
Total Pay: $129,984

Brett Leary holds the role of Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2025, their total compensation was $129,984. Their bargaining unit is R09.

Shahid Mahmood

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,984

Base pay: $129,634
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $129,984
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105113726054
Salary Total: $10,797
Total Pay: $129,984

Shahid Mahmood works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Shahid earned $129,984 in 2025. Their bargaining unit is R09.

Tenaya Tuteur

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,984

Base pay: $129,634
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $129,984
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105113726153
Salary Total: $10,797
Total Pay: $129,984

Tenaya Tuteur holds the role of Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2025, their total compensation was $129,984. Their bargaining unit is R09.

Julie Duong

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,984

Base pay: $129,634
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $129,984
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Orange
Middle name: S

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8101743726001
Salary Total: $10,797
Total Pay: $129,984

Julie Duong is a Hazardous Substances Engineer at Toxic Substances Control. They work full-time. 2025 total compensation came to $129,984. Their bargaining unit is R09.

Nancy Villagomez Luna

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,921

Base pay: $129,571
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $129,921
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Imperial

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8109883726001
Salary Total: $10,997
Total Pay: $129,921

At Toxic Substances Control, Nancy Villagomez Luna serves as a Hazardous Substances Engineer. They work full-time. Their 2025 pay totaled $129,921. Union affiliation: R09.

Jane Numazu

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,809

Base pay: $129,634
Overtime: $0
Other pay: $175
Benefits: $0
Total compensation: $129,809
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: R

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105113726152
Salary Total: $10,797
Total Pay: $129,809

Jane Numazu works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Jane earned $129,809 in 2025. They are represented by R09.

Kayla Kuhl

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$129,361

Base pay: $128,861
Overtime: $0
Other pay: $500
Benefits: $0
Total compensation: $129,361
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: M

Source-specific fields

Base Pay: $11,243
Cs/csu: Cs
Position Number: 8109703726032
Salary Total: $10,906
Total Pay: $129,361

Kayla Kuhl works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Kayla earned $129,361 in 2025. They are represented by R09.

Tai Nguyen

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$128,866

Base pay: $128,716
Overtime: $0
Other pay: $150
Benefits: $0
Total compensation: $128,866
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: A

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105313726602
Salary Total: $10,797
Total Pay: $128,866

Tai Nguyen works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Tai earned $128,866 in 2025. Union affiliation: R09.

Nadine Doughman

Hazardous Substances Engineer/Toxic Substances Control

2024 total comp

$128,675

Base pay: $128,200
Overtime: $0
Other pay: $475
Benefits: $0
Total compensation: $128,675
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Los Angeles
Middle name: N

Source-specific fields

Base Pay: $10,807
Cs/csu: Cs
Position Number: 8106533726004
Salary Total: $10,807
Total Pay: $128,675

Nadine Doughman holds the role of Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2024, their total compensation was $128,675. Their bargaining unit is R09.

Xuong Ton

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$127,521

Base pay: $127,171
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $127,521
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Sacramento
Middle name: K

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8106513726207
Salary Total: $10,797
Total Pay: $127,521

Xuong Ton works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Xuong earned $127,521 in 2025. Their bargaining unit is R09.

Luis Davis

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$126,906

Base pay: $126,556
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $126,906
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Los Angeles
Middle name: G

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105133726001
Salary Total: $10,797
Total Pay: $126,906

At Toxic Substances Control, Luis Davis serves as a Hazardous Substances Engineer. They work full-time. Their 2025 pay totaled $126,906. Union affiliation: R09.

Ujjval Shukla

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$126,609

Base pay: $126,259
Overtime: $0
Other pay: $350
Benefits: $0
Total compensation: $126,609
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Los Angeles
Middle name: K

Source-specific fields

Base Pay: $11,131
Cs/csu: Cs
Position Number: 8105133726208
Salary Total: $10,797
Total Pay: $126,609

Ujjval Shukla holds the role of Hazardous Substances Engineer at Toxic Substances Control. Their status is full-time. In 2025, their total compensation was $126,609. Union affiliation: R09.

Katherine Gould

Hazardous Substances Engineer/Toxic Substances Control

2025 total comp

$126,576

Base pay: $92,224
Overtime: $0
Other pay: $34,352
Benefits: $0
Total compensation: $126,576
Employment type: Full-Time
Union / bargaining unit: R09
Work county: Los Angeles
Middle name: M

Source-specific fields

Base Pay: $12,152
Cs/csu: Cs
Position Number: 8105143726158
Salary Total: $12,456
Total Pay: $126,576

Katherine Gould works as a Hazardous Substances Engineer for Toxic Substances Control. Their status is full-time. Katherine earned $126,576 in 2025. They are represented by R09.