Environmental Managers & Auditors
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MPH, Epidemiology
University of California, Berkeley, 2000

National Institute of Health (NIH) Postdoctoral Research, Cancer Epidemiology
University of California, Berkeley, 1982

Ph.D., Health Policy Analysis and Modeling
University of California, San Francisco, 1979

B.A., History/Zoology
University of California, Los Angeles, 1968


Dr. Ozaki has been active in environmental consulting for the past twenty years. He is a public health specialist engaged in health risk assessment work for hazardous waste sites. He developed and managed LevineFricke's Risk Group and is currently the Director of the Public Health Risk Assessment Services at (SOMA). His experience includes providing both technical and management support for EPA Superfund endangerment assessments and baseline risk assessments in Region IX, as well as for State Superfund baseline risk assessments in California, and other states. He has prepared site-specific quantitative multimedia risk assessments as part of the RI/FS process for various sites on EPA's National Priorities List (NPL). As part of these evaluations, Dr. Ozaki has performed data evaluations in order to identify chemicals of concern, developed toxicological profiles, performed exposure assessments and quantified the risks associated with the site. Dr. Ozaki has also provided technical support to the EPA in Region X on a multimedia exposure assessment model to verify soil remediation at Federal-lead hazardous waste sites. His work included the preparation of algorithms required to quantify risk at various stages of remediation.

Dr.Ozaki has also prepared various types of quantitative risk assessments for regulatory compliance purposes at both the State and Federal levels. They include permitting requirements for the construction of cogeneration and municipal solid waste facilities; development of soil remediation levels (SRL) for various hazardous materials including: volatile organic compounds (VOCs), inorganic metals, agricultural chemicals, polychlorinated biphenyls (PCB), petroleum hydrocarbons; and preparation of documentation of remediation. Recently, he has prepared a quantitative risk assessment for a client who requested a regulatory compliance evaluation under the Safe Drinking Water and Toxic Enforcement Act of 1986. The project involved an extensive data adequacy evaluation, the identification of chemicals known to the State to be a carcinogen or a reproductive toxicant that were discharged on-site by the client, preparation of a source release inventory, the development of a work plan to collect air samples and the preparation of a quantitative risk assessment.

Dr. Ozaki has completed a large number of baseline risk assessments for California Bond Sites (California Superfund sites) and other PRP-lead sites in California. These risk assessments demand technical expertise and attention to detail specific to guidelines and policy issues particular to various regulatory agencies in the State of California. Dr. Ozaki's experience has established him as an effective consultant in representing client needs and presenting technical data in compliance with regulatory agency requirements.

As an important agricultural producing State, risk issues related to the use of agricultural chemicals is a concern. Dr. Ozaki has applied his experience in the risk evaluation of pesticides, herbicides, fungicides, and algicides in performing risk assessment of agricultural chemical-affected lands. The use of former agricultural lands for residential, commercial, and industrial development has prompted the California Department of Health Services (DHS) through the Department of Toxic Substances Control to look closely at potential health affects due this type of development. This concern has carried over to the California Environmental Protection Agency (Cal EPA). The absence of regulatory guidelines specific to agricultural chemicals have placed increasing emphasis on technical expertise in addressing Cal EPA concerns. Dr. Ozaki has been very effective in working with Department of Toxic Substances Control and with various county and municipal health departments in performing these types of risk assessments.

Dr. Ozaki has performed over 50 environmental regulatory compliance audits primarily in California and throughout the United States. Clients have included companies from within the following industries: high tech electronics, electronics manufacturing, communications, metal plating, automobile, lumber and wood treatment, nuclear manufacturing and power generation. Several audits were also performed for the U.S. Department of Energy and Department of Defense. Dr. Ozaki has also performed real estate acquisition and divestiture audits for the presence of hazardous and toxic materials. Dr. Ozaki was member of an auditing team that performed an extensive, year-long RCRA audit of a large DOE nuclear reservation in the Pacific Northwest. He has also performed OSHA-type audits at NPL-listed sites under the various Superfund contracts.

Dr. Ozaki has been the Regional Health and Safety Officer for two major environmental consulting companies in the San Francisco Bay area and the Corporate Health and Safety Director for another. He has extensive experience in the health and safety aspects of hazardous waste management and remediation programs in a large variety of both governmental and private industry projects throughout the United States. For two years, Dr. Ozaki has also served as the Regional Health and Safety Director for EPA Region X, under the REM II Superfund Program.

Dr. Ozaki's experience includes:


Public Health/Risk Assessment

Preparing quantitative health risk assessments for various clients seeking appropriate compliance to regulatory requirements for documentation of project-related public health effects.

Performing hazard assessments and risk analyses associated with adverse health risks related to multimedia exposures due to environmental releases of hazardous materials.

Preparing risk-based documentation for negotiating soil and groundwater remedial cleanup levels with DHS, Cal EPA, and U.S. Environmental Protection Agency.

Preparing and negotiating soil remediation levels for lead based on the use of EPA's Uptake and Biokinetic Model.

Development of a multimedia exposure model for the EPA to test verification of remediation at Superfund and other federal lead sites.

Providing management of technical and budgetary aspects of the endangerment assessments for eight Superfund sites under REM II in California and three PRP-lead sites in the states of Utah, Illinois, and Iowa.

Providing technical oversight of the sampling program to meet the data requirements of an endangerment assessment for a major asbestos contamination site under the REM II Superfund program.

Provide management and technical support for the completion of five technical reports and health risk assessments under California's Preliminary Endangerment Assessment (PEA) program.

Providing expert testimony before various committees of the California Energy Commission on the adverse health risks associated with cogeneration facilities and municipal solid waste burning facilities.
Analyzing community health impacts and assessments of remedial strategies associated with a large-scale raw sewage spill in an urban setting.

Environmental fate and migration characteristics of microbial contaminates in soil and water.


Performance of OSHA-type occupational health and safety audits.

Performance of environmental audits associated with compliance evaluations with applicable Federal, State, and local environmental laws and regulations.

Conducting site audits in the preparation of RCRA Part B Applications.

Performing site inspections as part of closure activities under the California Site Mitigation Decision Tree.

Performing a site audit in preparation of a compliance evaluation under the Safe Drinking Water and Toxic Enforcement Act of 1986.

Performing Phase I real estate acquisition and divestiture audits to identify the presence of potential toxic and hazardous materials.

Health and Safety

Over eight years of experience in health and safety planning, field implementation, and training for conducting site investigations and remedial activities involving hazardous materials and wastes.

Conducting qualitative and quantitative hazard assessments associated with site-specific field activities involving hazardous materials and wastes.

Preparing and implementation of site-specific health and safety plans.

Designing and implementing exposure monitoring and medical surveillance programs.

Program design, curriculum development and teaching health and safety courses in compliance with Federal training requirements under CERCLA (CFR 1910.120), RCRA, and OSHA, as well as State requirements in California's Title 22.

Curriculum development, teaching, and fit testing respiratory equipment for EPA Level C and Level B respiratory protection certification.

Preparing bid specification documents for health and safety for large multi-task site investigations and remediation programs involving Level C and Level B respiratory protection.

Institution and Policy Analysis

The use of quantitative risk models as well as other toxicologically identified threshold levels to evaluate the public health significance of the presence of contaminants in groundwater for which standards are absent.

The use of Applicable or Relevant and Appropriate Requirements (ARARs) in quantitative risk models, as well as other toxicologically identified threshold levels to evaluate remedial strategies in groundwater cleanup.

Evaluation of Arizona's protocols for establishing groundwater cleanup levels.Environmental Planning and Engineering Analysis

The review of BACT and other feasibility considerations such as analytical methods, QA/QC, cost factors, reliability, etc, in the application of environmental planning and engineering controls on groundwater protection and cleanup.

The application of risk-based methods in the cleanup and planning of residential and commercial developments.

The identification of point sources and non-point sources of groundwater contamination.


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