Posted August 20, 2026
Risk Assessor/Toxicologist Interdisciplinary (Environmental) - DIRECT HIRE AUTHORITY
AF Installation and Mission Support Center
Kelly AFB, TX
Full Time
Reference: AFInstallationandMissionSupportCenter881345300
Click on "Learn more about this agency" button below to view Eligibilities being considered and other IMPORTANT information.
The primary purpose of this position is to serve as an environmental professional for the Environmental Directorate, a directorate of the Air Force Civil Engineer Center (AFCEC), a Primary Subordinate Unit (PSU).
ARE YOU USING YOUR EDUCATION TO QUALIFY? If position has a positive degree requirement or education forms the basis for qualifications, you MUST submit transcriptswith the application. Official transcripts are not required at the time of application; however, if position has a positive degree requirement, qualifying based on education alone or in combination with experience; transcripts must be verified prior to appointment. An accrediting institution recognized by the U.S. Department of Education must accredit education. Click here to check accreditation.
FOREIGN EDUCATION: Education completed in foreign colleges or universities may be used to meet the requirements. You must show proof the education credentials have been deemed to be at least equivalent to that gained in conventional U.S. education program. It is your responsibility to provide such evidence when applying.
Basic Requirement for 0020, Community Planner Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in community planning; or related field such as urban affairs, architecture, landscape architecture, engineering, sociology, geography, economics, political science, or public administration that included at least 12 semester hours in the planning process, socioeconomic and physical elements of planning, urban and regional economic analysis, and development finance. NOTE: You must submit a copy of official transcripts.
OR
Combination of Education and Experience: Courses equivalent to a major in one of the disciplines, as shown above, or a combination of related courses totaling at least 24 semester hours in any combination of the disciplines, as shown above, of which at least 12 semester hours were in the planning process, and socioeconomic and physical elements of planning, plus appropriate experience or additional education. NOTE: You must submit a copy of official transcripts.
Basic Requirements for 0401, Biological Scientist Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in biological sciences, agriculture, natural resource management, chemistry, or related disciplines appropriate to the position.
OR
Combination of education and experience: Courses equivalent to a major biological sciences, agriculture, natural resource management, chemistry, or related disciplines, plus appropriate experience or additional education.
Basic Requirement for 0801/0819, General/Environmental Engineer Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in Engineering. To be acceptable, the program must: (1) lead to a bachelor's degree in a school of engineering with at least one program accredited by ABET; or (2) include differential and integral calculus and courses (more advanced than first-year physics and chemistry) in five of the following seven areas of engineering science or physics: (a) statics, dynamics; (b) strength of materials (stress-strain relationships); (c) fluid mechanics, hydraulics; (d) thermodynamics; (e) electrical fields and circuits; (f) nature and properties of materials (relating particle and aggregate structure to properties); and (g) any other comparable area of fundamental engineering science or physics, such as optics, heat transfer, soil mechanics, or electronics.
OR
Combination of Education and Experience: College-level education, training, and/or technical experience that furnished (1) a thorough knowledge of the physical and mathematical sciences underlying professional engineering, and (2) a good understanding, both theoretical and practical, of the engineering sciences and techniques and their applications to one of the branches of engineering. Click here to view occupational requirements for this position.
Basic Requirement for 1301, Physical Scientist Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in physical science, engineering, or mathematics that included 24 semester hours in physical science and/or related engineering science such as mechanics, dynamics, properties of materials, and electronics.
OR
Combination of education and experience - education equivalent to one of the majors shown above that included at least 24 semester hours in physical science and/or related engineering science, plus appropriate experience or additional education. In addition to meeting the basic requirement above, to qualify for this position you must also meet the qualification requirements listed below:
SPECIALIZED EXPERIENCE: Applicants must have at least 1 year (52 weeks) of specialized experience at the next lower broadband NH-02, equivalent to the next lower grade GS-11 or equivalent in other pay systems. Specialized experience is experience with applying scientific principles, practices, standards, methods, and techniques associated with environmental risk assessment and toxicology; preparing baseline human health and ecological risk assessments in accordance with EPA Risk Assessment Guidance for Superfund (RAGS); knowledge of legal drivers and regulatory requirements for CERLA and RCRA; knowledge of vapor intrusion principles, investigation, and risk assessment; and identifying and evaluating risk assessment data, and preparing conceptual exposure models.
NOTE: Due to the use of 120-day rosters, this period of experience may be completed within 120 days of the closing date of this announcement.
This announcement establishes a pool of candidates to fill future positions. We accept applications continuously during the open period of this announcement. We review applications and refer candidates for selection consideration as vacancies occur within the organization. Additional vacancies may be filled from this announcement upon its closing for up to 120 days.
KNOWLEDGE, SKILLS AND ABILITIES (KSAs): Your qualifications will be evaluated on the basis of your level of knowledge, skills, abilities and/or competencies in the following areas:
1. Knowledge of current U.S. environmental laws and regulations, DoD, and Air Force instructions, policies, directives, and applicable agreements as they pertain to assigned programs; professional knowledge of new applications or developments in environmental programs to provide expert level support or advice.
2. Knowledge of Air Force programming, budget, and funding process and ability to forecast, develop, and evaluate resource requirements pertaining to environmental programs.
3. Knowledge of all existing operations with special emphasis and professional knowledge of environmental program management.
4. Knowledge of applicable health and safety requirements as outlined in job related safety standards, regulations, and orders.
5. Knowledge of construction and service contracting procedures relevant to executing environmental related contracts.
6. Ability to communicate effectively, both orally and in writing, with senior officials from a broad array of activities, including federal and local government, and industry.
PART-TIME OR UNPAID EXPERIENCE: Credit will be given for appropriate unpaid and or part-time work. You must clearly identify the duties and responsibilities in each position held and the total number of hours per week.
VOLUNTEER WORK EXPERIENCE: Refers to paid and unpaid experience, including volunteer work done through National Service Programs (i.e., Peace Corps, AmeriCorps) and other organizations (e.g., professional; philanthropic; religious; spiritual; community; student and social). Volunteer work helps build critical competencies, knowledge and skills that can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience.
The primary purpose of this position is to serve as an environmental professional for the Environmental Directorate, a directorate of the Air Force Civil Engineer Center (AFCEC), a Primary Subordinate Unit (PSU).
ARE YOU USING YOUR EDUCATION TO QUALIFY? If position has a positive degree requirement or education forms the basis for qualifications, you MUST submit transcriptswith the application. Official transcripts are not required at the time of application; however, if position has a positive degree requirement, qualifying based on education alone or in combination with experience; transcripts must be verified prior to appointment. An accrediting institution recognized by the U.S. Department of Education must accredit education. Click here to check accreditation.
FOREIGN EDUCATION: Education completed in foreign colleges or universities may be used to meet the requirements. You must show proof the education credentials have been deemed to be at least equivalent to that gained in conventional U.S. education program. It is your responsibility to provide such evidence when applying.
- As an environmental professional, provides professional environmental technical and program support to the office of the Assistant Secretary of the Air Force, Installations, Environment and Logistics (SAF/IE), Headquarters, Air Force (HAF) A7C, Environmental Restoration and Quality Program Offices, Major Commands (MAJCOMs), Regional Support Teams (RSTs), and Installation Support Teams (ISTs).
- Provides consultation and advisory services to leadership and customers.
- Communicates critical issues to SAF/IE, HAF A7C, MAJCOMs, RST/IST staff members, serviced installations, and superiors.
- Executes AFCEC environmental programs in accordance with all DoD and Air Force policy and applicable laws and regulations.
- Reviews and evaluates risk assessments, to include data review, and develops substantive comments and corrective actions to achieve technical sufficiency and ensure unnecessary remedial actions are avoided
- Serves as one of AFCEC's technical subject matter specialists in the areas of chemical toxicity, and human health and ecological risk assessment to include evaluation and/or development of toxicity values
- Works collaboratively with installations to ensure risk assessments are aligned with regulatory requirements/guidance, and are technically sufficient
- Provides professional guidance on application of technical toxicology policies and procedures
- Applies critical-thinking skills to solve scientific problems and develops methods to increase efficiency of the risk assessment process
- Provides training in risk assessment methods, documentation, and procedures
- Provides input for briefs to senior leadership for risk assessment and toxicology subjects
Basic Requirement for 0020, Community Planner Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in community planning; or related field such as urban affairs, architecture, landscape architecture, engineering, sociology, geography, economics, political science, or public administration that included at least 12 semester hours in the planning process, socioeconomic and physical elements of planning, urban and regional economic analysis, and development finance. NOTE: You must submit a copy of official transcripts.
OR
Combination of Education and Experience: Courses equivalent to a major in one of the disciplines, as shown above, or a combination of related courses totaling at least 24 semester hours in any combination of the disciplines, as shown above, of which at least 12 semester hours were in the planning process, and socioeconomic and physical elements of planning, plus appropriate experience or additional education. NOTE: You must submit a copy of official transcripts.
Basic Requirements for 0401, Biological Scientist Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in biological sciences, agriculture, natural resource management, chemistry, or related disciplines appropriate to the position.
OR
Combination of education and experience: Courses equivalent to a major biological sciences, agriculture, natural resource management, chemistry, or related disciplines, plus appropriate experience or additional education.
Basic Requirement for 0801/0819, General/Environmental Engineer Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in Engineering. To be acceptable, the program must: (1) lead to a bachelor's degree in a school of engineering with at least one program accredited by ABET; or (2) include differential and integral calculus and courses (more advanced than first-year physics and chemistry) in five of the following seven areas of engineering science or physics: (a) statics, dynamics; (b) strength of materials (stress-strain relationships); (c) fluid mechanics, hydraulics; (d) thermodynamics; (e) electrical fields and circuits; (f) nature and properties of materials (relating particle and aggregate structure to properties); and (g) any other comparable area of fundamental engineering science or physics, such as optics, heat transfer, soil mechanics, or electronics.
OR
Combination of Education and Experience: College-level education, training, and/or technical experience that furnished (1) a thorough knowledge of the physical and mathematical sciences underlying professional engineering, and (2) a good understanding, both theoretical and practical, of the engineering sciences and techniques and their applications to one of the branches of engineering. Click here to view occupational requirements for this position.
Basic Requirement for 1301, Physical Scientist Positions (You must provide a copy of your transcripts):
A Bachelor's degree (or higher degree) in physical science, engineering, or mathematics that included 24 semester hours in physical science and/or related engineering science such as mechanics, dynamics, properties of materials, and electronics.
OR
Combination of education and experience - education equivalent to one of the majors shown above that included at least 24 semester hours in physical science and/or related engineering science, plus appropriate experience or additional education. In addition to meeting the basic requirement above, to qualify for this position you must also meet the qualification requirements listed below:
SPECIALIZED EXPERIENCE: Applicants must have at least 1 year (52 weeks) of specialized experience at the next lower broadband NH-02, equivalent to the next lower grade GS-11 or equivalent in other pay systems. Specialized experience is experience with applying scientific principles, practices, standards, methods, and techniques associated with environmental risk assessment and toxicology; preparing baseline human health and ecological risk assessments in accordance with EPA Risk Assessment Guidance for Superfund (RAGS); knowledge of legal drivers and regulatory requirements for CERLA and RCRA; knowledge of vapor intrusion principles, investigation, and risk assessment; and identifying and evaluating risk assessment data, and preparing conceptual exposure models.
NOTE: Due to the use of 120-day rosters, this period of experience may be completed within 120 days of the closing date of this announcement.
This announcement establishes a pool of candidates to fill future positions. We accept applications continuously during the open period of this announcement. We review applications and refer candidates for selection consideration as vacancies occur within the organization. Additional vacancies may be filled from this announcement upon its closing for up to 120 days.
KNOWLEDGE, SKILLS AND ABILITIES (KSAs): Your qualifications will be evaluated on the basis of your level of knowledge, skills, abilities and/or competencies in the following areas:
1. Knowledge of current U.S. environmental laws and regulations, DoD, and Air Force instructions, policies, directives, and applicable agreements as they pertain to assigned programs; professional knowledge of new applications or developments in environmental programs to provide expert level support or advice.
2. Knowledge of Air Force programming, budget, and funding process and ability to forecast, develop, and evaluate resource requirements pertaining to environmental programs.
3. Knowledge of all existing operations with special emphasis and professional knowledge of environmental program management.
4. Knowledge of applicable health and safety requirements as outlined in job related safety standards, regulations, and orders.
5. Knowledge of construction and service contracting procedures relevant to executing environmental related contracts.
6. Ability to communicate effectively, both orally and in writing, with senior officials from a broad array of activities, including federal and local government, and industry.
PART-TIME OR UNPAID EXPERIENCE: Credit will be given for appropriate unpaid and or part-time work. You must clearly identify the duties and responsibilities in each position held and the total number of hours per week.
VOLUNTEER WORK EXPERIENCE: Refers to paid and unpaid experience, including volunteer work done through National Service Programs (i.e., Peace Corps, AmeriCorps) and other organizations (e.g., professional; philanthropic; religious; spiritual; community; student and social). Volunteer work helps build critical competencies, knowledge and skills that can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience.
