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Freelance Environmental Risk Assessor Jobs in California

Hanchey

Senior Environmental Consultant

Irvine, CA · On-site

Collaborate with internal and external engineers and environmental scientists in completing assessment of risk for current and prospective Chubb Environmental Risk insureds. * Develop technical risk ...

Chase

Environmental Credit Risk Sr Officer

Irvine, CA · On-site

Registered Environmental Assessor, Certified Asbestos Consultant, etc.). * At least seven years of experience administering environmental investigations, risk management and loss prevention programs ...

GHD

Environmental Scientist/Geoscientist

Roseville, CA · Hybrid

$78K - $103K/yr

As part of our interdisciplinary team, you will contribute to impactful projects involving environmental investigation, remediation, and risk assessment, while working closely with clients ...

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Freelance Environmental Risk Assessor information

What does a freelance environmental risk assessor do?

A Freelance Environmental Risk Assessor evaluates potential environmental hazards associated with various projects, such as construction or industrial operations. They analyze data, conduct site visits, and prepare reports to identify risks to human health and the environment. Working independently, they provide recommendations for mitigating these risks and ensure compliance with environmental regulations. Their clients may include government agencies, private companies, or non-profit organizations.

How do freelance environmental risk assessors manage multiple projects and clients simultaneously?

Freelance environmental risk assessors often juggle several projects at once, each with its own deadlines, compliance requirements, and stakeholders. Effective time management and clear communication are essential, as you’ll need to coordinate site visits, data analysis, reporting, and client meetings. Many use project management tools and maintain detailed schedules to track deliverables and ensure all client expectations are met. Regular updates and transparent reporting help build trust and foster long-term client relationships, which are crucial for repeat business and referrals in the freelance sector.

What skills and qualifications are needed to thrive as a freelance environmental risk assessor?

To thrive as a Freelance Environmental Risk Assessor, you need a strong background in environmental science, risk analysis, and regulatory compliance, typically supported by a relevant degree and professional experience. Familiarity with GIS software, environmental modeling tools, and knowledge of environmental regulations and certifications such as ISO 14001 are important. Excellent communication, analytical thinking, and project management skills help you effectively interpret data and present findings to clients. These skills and qualifications are essential for providing accurate assessments, ensuring regulatory adherence, and maintaining client trust in diverse environmental projects.
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Infographic showing various Freelance Environmental Risk Assessor job openings in California as of August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 9% Part Time, 2% Temporary, and 2% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution.

Human Health Risk Assessor - 6 years minimum experience

AECOM

Los Angeles, CA • On-site, Remote

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 27 days ago

AECOM rating

8.4

Company rating: 8.4 out of 10

Based on 66 frontline employees who took The Breakroom Quiz

7th of 80 rated construction

Job description

Company Description
Work with Us. Change the World.
At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world's most complex challenges and build legacies for future generations.
There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.
We're one global team driven by our common purpose to deliver a better world. Join us.
Job Description
AECOM is seeking an experienced and motivated full-time Human Health Risk Assessor to become an integrated member of AECOM's risk assessment and remediation practices. The location of this position is flexible and may be either in-office or remote.
In this role, your responsibilities will include:
  • Supporting a wide range of projects for private and government clients throughout the U.S. (and internationally).
  • Performing and reviewing ecological risk assessments in accordance with regulatory guidance and project-specific work plans.
  • Developing Risk Assessment Work Plans and contributing to Sampling and Analysis Plans/Quality Assurance Project Plans.
  • Successfully coordinating with internal project teams, including delegating to junior staff.
  • Preparing technical deliverables; including writing reports and performing/reviewing risk assessment calculations.
  • Contributing to proposals and business development, including developing scopes of work and cost estimates for ecological risk assessment.
  • Mentoring/developing more junior staff.
  • Maintaining knowledge of federal and state regulations/guidance documents for conducting risk assessments.
  • Maintaining work quality, quantity, and efficiency at or above company standards.
  • Must be willing to perform occasional field work, as needed.

Qualifications
Minimum Qualifications:
  • BA/BS degree in Ecotoxicology, Ecology, Zoology, Environmental Science/Studies, Chemistry, Toxicology, Biology or other related area AND 6+ years of experience performing ecological risk assessments in an environmental consulting setting, or demonstrated equivalence of education and experience.
  • Due to the nature of work, US Citizenship is required.
  • Valid Driver's License and as a condition of employment must be able to pass AECOM's Motor Vehicle Records review and background check.

Preferred Qualifications:
  • Master's or PhD degree in Ecotoxicology, Ecology, Zoology, Environmental Science/Studies, Chemistry, Toxicology, Biology, Zoology, or other related area.
  • Applied knowledge of USEPA guidance for conducting ecological risk assessment.
  • Excellent technical writing and communication skills.
  • Experience conducting food web/bioaccumulation assessments.
  • Experience performing data analysis and applied statistics.
  • Excellent technical writing and communication skills.
  • Proficiency in Microsoft Excel and Word.
  • Experience evaluating PFAS, PCBs, and lead.
  • CERCLA experience with Remedial Investigations, Feasibility Studies, and ROD development.
  • Site investigation and field sampling and wildlife assessment experience.
  • Experience working on Navy or Department of Defense.
  • Experience dealing with the Hawaii Department of Health and EPA Region 9
  • Experience working with projects in Hawaii, Guam and other Pacific Islands
  • Preferred work location Hawaii.
  • Experience performing wildlife assessments.

Additional Information
  • THIS POSTING IS FOR A CURRENT VACANCY, AND AECOM INTENDS TO FILL THIS POSITION BY SEPTEMBER 6TH, 2026.

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.
About AECOM
AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.
AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients' complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle - from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com.
What makes AECOM a great place to work
You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you'll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you've always envisioned. Here, you'll find a welcoming workplace built on respect, collaboration and community-where you have the freedom to grow in a world of opportunity.
As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.

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