5305 Materials Testing Technician

Recruitment #PBT-5305-100447


This is a Position-Based Test in accordance with Civil Service Rule 111A.

Department Overview:
Public Works provides dozens of services to keep the city beautiful, safe and sustainable for residents, merchants and visitors. To efficiently and reliably provide a vast offering of services, the Public Works department houses various subdivisions and bureaus. The Operations Division includes the Bureau of Street Environmental Services, Bureau of Urban Forestry, Bureau of Street & Sewer Repair, Bureau of Building Repair and Bureau of Community Engagement; Financial Management and Administration Division oversees the Bureau of Finance, Bureau of Information Technology, and Bureau of Administration; Infrastructure Design & Construction Division oversees the Bureau of Project Management, Bureau of Construction Management, Bureau of Engineering, and Bureau of Street Use & Mapping; and the Building Design & Construction Division oversees the Bureau of Architecture, Bureau of Construction Management, Bureau of Project Controls and Services, Bureau of Landscape Architecture and Bureau of Project Management. Building Design and Construction Division manages the Materials Testing Lab.

This recruitment is to fill vacant positions in the 5305 Materials Testing Technician Classification.

Position Description:
Under general supervision, this position performs more difficult and responsible sampling and testing of a variety of soils and construction materials in the field or laboratory; has responsibility for explaining and enforcing regulations, policies and legal provisions related to sampling and testing of construction materials; oversees the work testing aides in the field or laboratory; and records log of daily work performed and time and materials expended. 

Examples of important and essential duties include:
1. Collects samples of soils and construction materials in the field to measure physical characteristics; may be required to collect and test environmental media and measure environmental characteristics.

2. Performs a variety of tests on construction materials including soils, reinforcing steel, sand, aggregates, concrete, asphalt and other mixes, cement-treated bases, and other materials, using sophisticated materials-testing equipment.

3. Operates nuclear and electronic instruments to determine relative compaction of soils; calibrates and adjusts instruments to compensate for changing conditions.

4. Inspects facilities where materials are used and stored to ensure compliance with Federal, State, and local regulations and ordinances.

5. Inspects the operations of asphalt and concrete batch plants; checks equipment, weights, temperatures and materials for compliance with specifications; tests and calculates aggregate gradings for field mix design.
6. Records and reports test results after performing mathematical calculations, making graphical solutions and graphical representations.

7. Communicates orally and in writing with supervisor and staff members, City and outside agency representatives, contractors, business and property owners, or the general public.

8. Uses a personal computer to write memos, complex operational and inspection reports, and letters; to communicate with others via e-mail (Microsoft Outlook); and to perform computer file management when storing and retrieving information related to documentation of inspections, sampling and testing activities and results.

9. Uses appropriate personal protective equipment (PPE), which may include wearing a respirator, and follows appropriate health and safety practices.

10. Maintains a valid driver license and drives a motor vehicle in the course of collecting samples, performing field tests and conducting inspections.

11. Uses a two-way radio, cell phone or pager to communicate with supervisors and other staff.

12. May use field air monitoring equipment to test atmosphere or other conditions at construction and maintenance sites; may calibrate and adjust equipment in the field and interpret results.

13. May make screening level evaluations of disposal requirements for common construction and environmental materials.

14. Handles 55-gallon drums to collect samples; lifts 90-pound bags of cement with assistance; lifts 5-gallon buckets of soil samples; uses wheelbarrow, coring machine and other materials or equipment to collect samples or conduct tests.

Minimum Qualifications

One year of experience in a position in which the major duties consisted of sampling and testing soils or construction materials; and ability to lift up to 70 pounds.

License or Certificate:
Possession and maintenance of a valid class C driver license and good driving record.

1.One-year full-time employment is considered equivalent to 2000 hours (2000 hours of qualifying work experience is based on a 40 hour work week). Any overtime hours that you work above forty (40) hours per week are not included in the calculation to determine full-time employment.

2. A valid out-of-state driver’s license is acceptable during the application process. A valid California driver's license must be obtained prior to appointment and maintained throughout employment.

3. Applicants must meet the minimum qualification requirement by the final filing date unless otherwise noted.

Desirable Qualifications:
The stated desirable qualifications may be used to identify job finalists at the end of the selection process when candidates are referred for hiring.

1. Verifiable experience in laboratory environment with quality assurance / quality control (QA/QC) procedures.

2. Certifications in ACI Laboratory or Field Sampling, Nuclear Gauge Usage Training, ICC/ICBO Reinforced Concrete Inspection, and AWS Welding Inspection.

How To Apply

Applications for City and County of San Francisco jobs are only accepted through an online process. Visit www.jobaps.com/sf to register an account (if you have not already done so) and begin the application process.

  • Select the desired job announcement PBT-5305-100447
  • Select “Apply” and read and acknowledge the information
  • Select either “I am a New User” if you have not previously registered, or “I have Registered Previously”
  • Follow instructions on the screen
In line with the Official Public Health Order to slow the spread of COVID-19, “shelter-in-place” has been issued for all San Francisco residents that is expected to be in effect until further notice. As a result, Department of Human Resources (DHR)’s office (located at 1 South Van Ness Avenue, 4th Floor, San Francisco, CA 94103) is currently closed to the general public. If you have any questions, please feel free to email the Human Resources Analyst listed on this announcement.

Applicants may be contacted by email about this announcement and, therefore, it is their responsibility to ensure that their registered email address is accurate and kept up-to-date. Also, applicants must ensure that email from CCSF is not blocked on their computer by a spam filter. To prevent blocking, applicants should set up their email to accept CCSF mail from the following addresses (@sfgov.org, @sfdpw.org, @sfport.com, @flysfo.com, @sfwater.org, @sfdph.org, @asianart.org, @sfmta.com, @sfpl.org, @dcyf.org, @first5sf.org, @famsf.org, @ccsf.edu). Applicants will receive a confirmation email that their online application has been received in response to every announcement for which they file. Applicants should retain this confirmation email for their records. Failure to receive this email means that the online application was not submitted or received.

All work experience, education, training and other information substantiating how you meet the minimum qualifications must be included on your application by the filing deadline. Information submitted after the filing deadline will not be considered in determining whether you meet the minimum qualifications. Resumes will not be accepted in lieu of a completed City and County of San Francisco Employment Application or as employment verification. Applications completed improperly may be cause for ineligibility, disqualification or may lead to lower scores.

If you have any questions regarding this recruitment or application process, please contact the exam analyst, Breonna Santiago, by telephone at (415) 554-6022, or via email to Breonna.Santiago@sfgov.org

Applicants may be required to submit verification of qualifying education and experience at any point during the recruitment and selection process. If education verification is required, information on how to verify education requirements, including verifying foreign education credits or degree equivalency, can be found at https://sfdhr.org/how-verify-education-requirements

Falsifying one’s education, training, or work experience or attempted deception on the application may result in disqualification for this and future job opportunities with the City and County of San Francisco.

Selection Procedures

Minimum Qualification Supplemental Questionnaire (Weight: Qualifying)
Applicants will be prompted to complete a Minimum Qualification Supplemental Questionnaire as part of the online employment application. This Minimum Qualification Supplemental Questionnaire is designed to obtain specific information regarding an applicant's experience in relation to the Minimum Qualifications for this position. Applicants must also complete the official application. It is essential that applicants provide complete information to identifying their education, experience and training. The Minimum Qualification Supplemental Questionnaire will be used to evaluate if the applicant possesses the required minimum qualifications. 

Written-Multiple Choice Examination (Weight: 100%)
Candidates who meet the minimum qualifications will be invited to participate in an written-multiple choice examination to determine their relative knowledge, skills, and abilities in job-related areas for the 5305 classification which includes: Knowledge of: technical methods and procedures used to collect and test a variety of construction materials in the field or laboratory; mathematical procedures related to the accurate performance and interpretation of a variety of calculations in the field or laboratory; and safety procedures and occupational hazards as they relate to injury prevention and safety; and ability to promote, establish, and maintain effective working relationships. Qualified Candidates will be notified of the exact, date, time and location of the examination. A passing score must be achieved on the Written-Multiple Choice Examination in order to be placed on the eligible list and continue in the selection process.

Certification Rule:
The certification rule for the ranked eligible lists resulting from this examination will be Rule of Ten Scores. The department may administer additional position-specific selection procedures to make final hiring decisions.

Eligible List/Score Report:
A confidential eligible list of applicant names that have passed the civil service examination process will be created, and used for certification purposes only. An examination score report will be established, so applicants can view the ranks, final scores and number of eligible candidates. Applicant information, including names of applicants on the eligible list, shall not be made public unless required by law. However, an eligible list shall be made available for public inspection, upon request, once the eligible list is exhausted or expired and referrals resolved. The eligible list/score report resulting from this civil service examination process is subject to change after adoption (e.g., as a result of appeals), as directed by the Human Resources Director or the Civil Service Commission. The duration of the eligible list resulting from this examination process will be 12 months and may be extended with the approval of the Human Resources Director. Upon approval of the Human Resource Director (see Civil Service Rule 111A.26.5), the eligible list/score report resulting from this announcement may be used by other departments that also use this classification or a similar classification. To find other Departments which use this classification, please see https://sfdhr.org/sites/default/files/documents/ASO-Level-Chart.pdf?documentID=21246.

Conviction History

As a selected candidate for a job, you will be fingerprinted, and your fingerprints will be sent to the California Department of Justice (DOJ) and the Federal Bureau of Investigation (FBI). The resulting report of your conviction history (if any) will be used to determine whether the nature of your conviction (or arrest, in limited circumstances) conflicts with the specific duties and responsibilities of the job for which you are a selected candidate. If a conflict exists, you will be asked to present any evidence of rehabilitation that may mitigate the conflict, except when federal or state regulations bar employment in specific circumstances, such as:

  • Candidates for positions with the Unified School District and the Community College District may be disqualified from consideration should their conviction history not meet the standards established under the California Education Code.
  • Candidates for positions with the Recreation and Park Department may be disqualified from consideration should their conviction history not meet the standards established under California Public Resources Code 5164.

Having a conviction history does not automatically preclude you from a job with the City.

If you are a selected candidate, the hiring department will contact you to schedule a fingerprinting appointment.

Disaster Service Workers

All City and County of San Francisco employees are designated Disaster Service Workers through state and local law (California Government Code Section 3100-3109). Employment with the City requires the affirmation of a loyalty oath to this effect. Employees are required to complete all Disaster Service Worker-related training as assigned, and to return to work as ordered in the event of an emergency.


Terms of Announcement and Appeal Rights:
Applicants must be guided solely by the provisions of this announcement, including requirements, time periods and other particulars, except when superseded by federal, state or local laws, rules or regulations. Clerical errors may be corrected by the posting the correction on the Department of Human Resources website at www.jobaps.com/sf. The terms of this announcement may be appealed under Civil Service Rule 111A.35.1. The standard for the review of such appeals is ‘abuse of discretion’ or ‘no rational basis’ for establishing the position description, the minimum qualifications and/or the certification rule. Appeals must include a written statement of the item(s) being contested and the specific reason(s) why the cited item(s) constitute(s) abuse of discretion by the Human Resources Director. Appeals must be submitted directly to the Executive Officer of the Civil Service Commission within five business days of the announcement issuance date. 

General Information concerning City and County of San Francisco Employment Policies and Procedures:
Important Employment Information for the City and County of San Francisco can be obtained at http://sfdhr.org/information-about-hiring-process or hard copy at 1 South Van Ness Avenue, 4th Floor. Copies of Application Documents: Applicants should keep copies of all documents submitted, as these will not be returned.

Applicants with disabilities who meet the minimum eligibility requirements for this job announcement can find information on requesting a reasonable ADA Accommodation at: http://sfdhr.org/information-about-hiring-process#applicantswithdisabilities

Information regarding requests for Veterans Preference can be found at: http://sfdhr.org/information-about-hiring-process#veteranspreference

Right to Work:
All persons entering the City and County of San Francisco workforce are required to provide verification of authorization to work in the United States.

Exam Type: Combined Promotive Entrance
Issued: October 14, 2020
Carol Isen, Acting Human Resources Director
Department of Human Resources
Recruitment ID Number: PBT-5305-100447
ADM/BDS (415) 554-6022


All employees hired on or after January 10, 2009 will be required (pursuant to San Francisco Charter Section A8.432) to contribute 2% of pre-tax compensation to fund retiree healthcare. In addition, most employees are required to make a member contribution towards retirement, ranging from 7.5%-13.25% of compensation. For more information on these provisions, please contact the personnel office of the hiring agency.

For more information about benefits, please click here.


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