Environmental Engineer Jobs in Illinois

Job Posting Date: Aug 11, 2026

Location:
Lemont, IL, US, 60439

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Job Function: Environmental

CITGO PETROLEUM CORPORATION

CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand. CITGO owns and operates three refineries located in Lake Charles, LA.; Lemont, IL.; and Corpus Christi, TX, and wholly and/or jointly owns 38 active terminals, six pipelines and three lubricants blending and packaging plants. With approximately 3,300 employees and a combined crude capacity of approximately 807,000 barrels-per-day (bpd), positions CITGO as one of the best-branded supplier companies in the industry.

At CITGO our people are our most important resource. Our core values are Safety, Integrity, Respect, Accountability, and Care.

Job Summary

This is an on-site position located in Lemont, IL at the CITGO Refinery. The Associate Environmental Engineer provides environmental compliance support for Lemont Refinery programs, with a primary focus on air compliance, environmental data management, regulatory reporting, agency correspondence, and environmental management system activities. The role supports compliance with federal, state, and refinery environmental requirements by coordinating inspections, reports, records, incident documentation, compliance calendar activities, and cross-functional communication with Operations, Engineering, Corporate Environmental, and regulatory agencies.

Salary range: $88,000 - $113,000

Click here for CITGO BENEFITS

Application deadline: Aug. 19, 2026

Minimum Qualifications

Bachelor’s degree in Environmental Engineering, Chemical Engineering, Environmental Science, or a related technical discipline required.
Zero to one year of relevant experience required.
Environmental, regulatory compliance, refinery, petrochemical, manufacturing, or industrial experience preferred.
Experience with air compliance, environmental reporting, agency correspondence, inspections, emissions calculations, compliance calendars, or environmental management systems is preferred.
Proficiency with Microsoft Office required; experience with SharePoint, Enablon, or similar compliance/document management systems preferred.
Must be able to work in a refinery environment, access operating areas as needed, comply with site safety requirements, wear required personal protective equipment, and coordinate with Operations, Engineering, Maintenance, and Environmental personnel.
Strong organizational, follow-up, technical documentation, problem-solving, and communication skills, with the ability to manage multiple priorities and meet regulatory reporting deadlines.
Valid driver’s license required.
Must be eligible to obtain a TWIC.

Job Duties

1. Support and assist with implementation and administration of air compliance programs; those programs include Storage Tank compliance (emissions and inspections), Continuous Emission Monitoring Systems (CEMS), and RICE engines. Requires the ability to understand and apply complex federal and state regulatory requirements, under guidance, to support interpretation and compliance efforts across refinery departments.

2. Support the Enablon Environmental Management System and related environmental data reporting activities, including performing daily reviews of reported incidents for Lemont; documenting environmental calculation requirements and updating release details; and serving as the refinery liaison with Corporate Environmental staff regarding submitted report information, including Environmental Index/Bonus Metric Index, hourly bonus data reporting, MSOM Environmental data reporting, and the Annual Environmental Index Performance Audit.

3. Provide regulatory compliance guidance for the following activities in the Lemont Refinery Environmental department: Review of new projects for potential air impacts (emissions and permitting) and provide guidance to Engineering and Operations where environmental regulatory requirements could impact the project, monitor new and pending regulatory changes, assist with maintaining Environmental Operating Limits and update as necessary when requirements change and participate in team investigations as assigned working with refinery personnel to identify root causes, develop emission estimates and draft follow up letters.

4. Prepare routine environmental reports to comply with monthly, quarterly, semi-annual and annual requirements, as well as providing input for others who generate reports in areas of subject matter expertise as listed above.

5. Support and coordinate incoming agency communications related to Notices of Violation (NOVs), Violation Notices, Findings of Violation (FOVs), Penalty Notices, and Requests for Information; managing, updating, and develop working knowledge and support the Refinery’s Environmental Compliance Calendar (managed through Enablon). Assist with administration of the New Chemical Request approval process; support and maintain the Environmental Incident Reporting procedure and related Shift Organization checklists; coordinate required CITGO Hotline notifications, National Response Center notifications, responses to remote ambient air analyzer exceedances, and odor complaints; and assemble required documents for audits and inspections.

Job Duties II

Job duties displayed above are not all-inclusive, site-specific responsibilities may be assigned.

Here are the incentives we offer:

• Remote Work options available for eligible positions
• Options are department and/or location specific
• 9/80 Work Schedule Option (where applicable)
• Annual Vacation Incentive (40-120 hours of additional pay) for Eligible Employees
• Paid Vacation Time
• Company-Paid Holidays
• Caregiver Leave
• Excellent 401(k) Match
• Pension Plan
• Performance Incentive
• Company-Paid Sick Leave and Long-Term Disability
• Medical, Dental, & Vision Plans; FSA and HSA options
• Company-Paid Life Insurance for Active Employees
• Healthy Rewards Program
• Service Awards Program
• Educational Assistance Plan
• Dependent Children Scholarships
• Reimbursement for Gym Membership
• Employee Discount Programs
• On-site Health Clinic (select locations)
• On-site Cafeteria (select locations)
• On-site Credit Union and ATM (Corporate office only)
• On-site Fitness Center (select locations)

PLEASE NOTE ALL JOBS DO NOT QUALIFY FOR ALL PERKS

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or disability.

Requisition ID - 2062

Nearest Major Market: Chicago