California / Toxic Substances Control

Agency file

Toxic Substances Control

Source file: California — State Employee Compensation (SCO Payroll Data Warehouse, CPRA) / ingested Jul 4, 2026

The Toxic Substances Control is a government agency that delivers public services and programs within its jurisdiction.

In 2025, this agency had 1,309 employees with median total compensation of $102,059; the highest distinct record was $298,588.

Year: 2025
Total payroll: $138.7M
Employees: 1,309
Median total: $102,059
Highest record: $298,588

What the records show

Compensation analytics

These summaries compare pay within the agency before listing individual records.

Salary distribution

-$5,776$188,507+

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

How 2025 total compensation is spread across the 1,309 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($102,059) — half earn less, half more. The far-right bar collects the highest earners.

Average pay composition

Base — $103,477 (98%)
Overtime — $334 (0%)
Other — $2,155 (2%)
Benefits — $0 (0%)

What an average paycheck here is made of — base salary versus overtime, other pay (bonuses, allowances), and benefits. A large overtime or other-pay share means take-home often exceeds base salary.

Pay percentiles

10th

25th

Median

75th

90th

$56,104

$77,309

$102,059

$135,141

$165,574

The pay ladder for this department. Someone at the 90th percentile earns $165,574 — more than 90% of the department; the 10th percentile earns $56,104. The shaded band is the middle half of employees (25th–75th percentile).

Largest job titles

Associate Governmental Program Analyst

149 · $76,436

Environmental Scientist

122 · $81,358

Hazardous Substances Engineer

112 · $113,353

Senior Environmental Scientist(Specialist)

98 · $106,889

Senior Hazardous Substances Engineer

59 · $145,219

The most common job titles in this department by headcount, with the median total compensation for each. Click a title to see everyone who holds it.

Trend

Year over year

How this department's total payroll, headcount, and median pay changed across the 3 published years.

Year	Total payroll	Employees	Median pay
2023	$120.6M —	1,261 —	$93,236 —
2024	$133.5M ▲ 10.8%	1,360 ▲ 7.9%	$92,612 ▼ 0.7%
2025	$138.7M ▲ 3.9%	1,309 ▼ 3.8%	$102,059 ▲ 10.2%

Compare

Similar departments

Departments elsewhere with the most similar mix of roles — a proxy for the same kind of agency, matched by workforce composition rather than name. Pay is not cost-of-living adjusted.

Department Resources Recycle/Recvry California70% match
Department of Environmental Quality Utah39% match

Record list

Employees

Page 2

Chawn Jeng

Senior Toxicologist/Toxic Substances Control

2025 total comp

$164,489

Base pay: $163,989
Overtime: $0
Other pay: $500
Benefits: $0
Total compensation: $164,489
Employment type: Full-Time
Union / bargaining unit: S10
Work county: Orange
Middle name: Y

Source-specific fields

Base Pay: $14,030
Cs/csu: Cs
Position Number: 8105747943013
Salary Total: $14,521
Total Pay: $164,489

At Toxic Substances Control, Chawn Jeng serves as a Senior Toxicologist. They work full-time. Their 2025 pay totaled $164,489. Union affiliation: S10.