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ENGINEERING TESTING AID I

County of Los Angeles
Los Angeles County, United Statesfull_timeVerifiedPosted 19 Aug 2026
💰 $54,248/yr($44,909/yr$54,248/yr)

About the role

Posting number: C3852D

Department: PUBLIC WORKS

Job classification: ENGINEERING TESTING AID I

Posting type: Open

Categories: Engineering, Public Works, Trades

Summary

 
With more than 10 million residents, Los Angeles County has the largest population of any county in the nation.  As the largest employer in Southern California, with more than 37 diverse departments and over 2,300 different job descriptions, the County offers a lifetime of opportunities and careers.

 
EXAM NUMBER
C3852D

FILING PERIOD 

The application filing period will begin on Thursday, August 20, 2026, at 8:00 a.m. (PT) Continuous. We will keep accepting applications until the position is filled. The application window may close unexpectedly once we have enough qualified candidates.

TYPE OF RECRUITMENT

We welcome applications from anyone. 

NO WITHHOLD WILL BE ALLOWED. REQUIRED EXPERIENCE/EDUCATION MUST BE FULLY MET AT THE TIME OF FILING AND CLEARLY INDICATED ON THE APPLICATION. 

Why work for us?   

With almost 10 million residents, Los Angeles County is the population county in the nation! As the largest employer in Southern California, with over 100,000 employees in 39 departments and over 2,100 different job descriptions, Los Angeles County offers a lifetime of opportunities and careers. We are Los Angeles County Public Works, the largest municipal public works agency in the nation. With more than 4,000 employees, Public Works offers over 500 different types of career opportunities that promote professional and personal growth as well as a rewarding and exciting work environment!

For more information about the outstanding benefits offered by Los Angeles County, please visit us here: https://hr.lacounty.gov/benefits/.

If you have questions about working for Los Angeles County, including current open recruitments, tips on crafting a resume or acing an interview, career planning, or any other general information, please visit our website at: https://hr.lacounty.gov/.

Examples of duties

  • Fills with a shovel, lifts onto a pickup truck, and transports bags of soil weighing approximately 90 pounds to the materials lab for analysis.
  • Lifts asphalt cores and core barrels, weighing approximately 40 pounds, for asphalt pavement laboratory testing, and conducts field samplings of soils for California Bearing Ratio tests.
  • Lifts and shifts the position of 40-pound loaded sieves in the prep room.
  • Digs holes 8 inches in diameter and 4 feet deep in firm, dense soil using a manual posthole digger.
  • Prepares samples for testing, including identifying, dating, separating, and logging information on samples.
  • Tests soil samples for compaction, consolidation, moisture content, shear strength, specific gravity, and bearing value.
  • Tests sand and rock samples for grading, abrasion resistance, specific gravity, sand equivalency, and plastic limits.
  • Tests paving liquid and emulsified asphalt samples for flash point, viscosity, heat loss, sieve retention, penetration, stripping, softening point, and residue by evaporation.
  • Tests asphalt and concrete for specific gravity, setting time, oil content, screen analysis, etc.
  • Performs the simpler phases of a wide variety of specialized materials tests.
  • Acts as a helper in a field crew operating test boring equipment.
  • Records and makes computations on test data and prepares report forms and graphs.
  • Operates testing machines and equipment in making physical tests.
  • Performs clean-up and minor maintenance work, keeping the laboratory and testing equipment in clean and workable condition.
  • Performs other field sampling and testing work as required.
For more information, please view the classification specification: Engineering Testing Aid I

Qualifications

REQUIREMENTS TO QUALIFY:

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Company

County of Los Angeles

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