About RSI

RSI is a dynamic group of companies that has provided services to major federal clients and Fortune 500 engineering and construction companies since 1996. We have experience in complex, highly regulated markets providing environmental, nuclear, construction management, project delivery, and specialty professional services while maintaining an excellent safety record.

We offer benefits including a 401K (100% match up to 4% eligible compensation) with 100% immediate vesting and Sick Leave.

RSI is headquartered in Oak Ridge, Tennessee, and is a wholly owned operating company of ASRC Industrial (AIS). AIS is a wholly owned operating company of Arctic Slope Regional Corporation (ASRC), an Alaska Native Corporation (ANC). Through ASRC, we are a certified Minority Business Enterprise (MBE) and Small Disadvantaged Business (SDB), and we also offer 8(a) options.

Position Summary

RSI is recruiting for a Graduate Intern – AS&T who will assist with reactive transport modeling being conducted under the Applied Studies and Technology Educational Collaboration initiative at DOE Office of Legacy Management (DOE LM) sites. This Graduate Intern is specifically needed to complete reactive transport modeling of prior tracer tests completed at the Riverton, Wyoming, Processing Site in the former tailings area (a portion of the whole site). This modeling will assist in determining site geochemical reactions and will be used in site-wide reactive transport modeling to select a future remedial strategy (could be natural flushing or an active remedy). Modeling work may include biotic or abiotic reactions. 

Job Title: Graduate Intern – AS&T
Location(s): Grand Junction, CO
Status: Part-Time – Temporary 
FLSA: Exempt
Hiring Range: $21.00/hour to $25.00/hour. (The anticipated starting salary is based on the posted minimum requirements for this position. The offered salary will be based upon the selected applicant’s education, training, and experience.)

This position is required to travel 0% of the time.

Essential Duties and Responsibilities

• Computer programming, including but not limited to Python and Fortran.
• Determine the potential reactions (rock/water interactions) occurring at the former tailings area of the Riverton, WY, Processing site. This determination will be based on prior data. This effort should include any biotic reactions (microbiology) that might influence geochemistry and will be incorporated into the conceptual site model.
• Complete reactive transport modeling (flow and geochemistry) of prior tracer testing data from the Riverton, WY, Processing site. This effort should include any biotic reactions (microbiology) that might influence the geochemistry.
• Calibration of the modeling above using an automated calibration routine (e.g., PEST) with an inclusion of model uncertainty.
• Ability to write publishable journal article(s) based essential duties and responsibilities listed above.
• Other duties as assigned.

Required Education and Years of Relevant Experience

• Master’s degree in Geology, Geochemistry, Hydrogeology, Chemistry, Physics or a related field.
• Ph.D. candidate preferred.
• 0 years of relevant experience.
• Some background in geochemistry and groundwater modeling preferred.

Licenses and Certifications

• Valid Driver’s License
• No professional certification required.

Required Skills and Abilities

• Microsoft office including but not limited to Excel and Word.
• Some experience in geochemical modeling and reactive transport modeling.

Clearance and Health Requirements

• Criminal Background Check
• Pre-placement Drug Screening
• Fit for Duty Test (if applicable)

Essential Physical Requirements 

Sedentary: Work involves exerting up to 10 pounds of force occasionally or a negligible amount of force frequently to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time but may involve walking or standing for brief periods of time. Jobs may be defined as sedentary when walking and standing are required only occasionally, and all other sedentary criteria are met.

Job Posting Close Date

05/11/2026

EEO Statement

ASRC Industrial (AIS) and its operating companies affords equal opportunity in employment to all individuals regardless of race, color, religion, sex, age, national origin, pregnancy, familial status, disability status, veteran status, citizenship status, genetic information or any other characteristic protected under Federal, State or Local law. AIS is an Equal Opportunity Employer.

ASRC Industrial, (“AIS”), and its Operating Companies will never ask job candidates for sensitive personal information (such as Social Security numbers, banking details, or payment of any kind) during the hiring process. If you receive unsolicited communications from individuals claiming to represent ASRC Industrial using non-official email addresses (e.g., not from @asrcindustrial.com), please report the message and do not engage. Official job postings can always be found on our website: asrcindustrial.com/careers/ or https://rsienv.applicantstack.com/x/opening