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Hydrogeologist, Senior - Grand Junction, CO
Hydrogeologist, Senior - Grand Junction, CO-February 2024
Grand Junction
Feb 10, 2026
About Hydrogeologist, Senior - Grand Junction, CO

  Hydrogeologist, Senior - Grand Junction, CO

  Summary

  Title: Hydrogeologist, Senior - Grand Junction, CO

  ID: 1901 - RSI - 06

  Description

  About the Company:

  RSI EnTech (RSI) has provided services to major federal clients and Fortune 500 engineering and construction companies since 1996. RSI has more than two decades of experience in complex, highly regulated markets providing environmental, engineering, energy and project management services while maintaining an excellent safety record. RSI Services was founded in 2017 and is the 8(a) company of RSI .

  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. Through ASRC, we are a certified Minority Business Enterprise.

  RSI is the current holder of the U. S. Department of Energy (DOE), Legacy Management (LM) Support Contract. The DOE LM program is responsible for managing radioactive and chemical waste, environmental contamination, and hazardous material at over 100 sites across the country that were generated by World War II and the Cold War support activities.

  RSI offers a full range of benefits; a generous PTO plan, paid holidays, medical, dental, vision, 401K (100% match up to 4% eligible compensation) and 100% immediate vesting, Basic and Supplemental life insurance, and short- & long-term disability.

  Job Title: SeniorHydrogeologist

  Location: Grand Junction, Colorado

  Status: Full-Time

  FLSA: Exempt

  RSI EnTech, LLC is recruiting a SeniorHydrogeologist to join the Groundwater and Geochemistry Group (GGG). The GGGembraces innovation and is an industry leader in 3-D visualization and evaluation, geochemical assessment, and groundwater flow and reactive transport modeling, coding and field characterization. As a Senior Hydrogeologist you will work with a team of GGG scientists designing and implementing site characterization programs, developing conceptual site models, performing geochemical evaluations, configuring and calibrating numerical groundwater flow and reactive transport models and designing and evaluating redial alternatives. Sometimes you will lead, other times you will provide technical support to the team, but the work will always be technically challenging.The GGG primarily supports Uranium Mill Tailings Radiation Control Act (UMTRCA) and Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) projects. A central GGG tenant is maintaining a good work life balance.

  Hiring Range: $110,000- $150,000/yr. The anticipated starting salary pay range of $110,000- $150,000/yr.The offered salary may be more depending upon additional education, training, and experience of the selected applicant.

  Required Education and Years of Experience:

  MS or PhD degree in Geology, Hydrology, or Engineering with a minimum of 10 years of experience in Groundwater or related field.

  Clearance and Health Requirements:

  Criminal Background Check

  Pre-placement Drug Screening

  Fit for Duty Test (if applicable)

  Primary Responsibilities:

  As a senior GGG member you will be expected to work with staff to develop scopes of work and associated budgets and schedules, prepare and execute work plans, hire and supervise subcontractors, and adhere to budgets and schedules. You will also perform and/or supervise groundwater evaluations, geochemical studies, numerical groundwater flow and transport modeling, and remedial design and evaluation. Senior Hydrogeologist serve as the writer, editor, and reviewer of all project documents. You will be expected to mentor and develop junior staff.

  Essential Functions:

  Work with a team of scientists and engineers to solve challenging groundwater problems.

  Use innovative hydrogeologic and numerical groundwater flow and reactive transport modeling techniques.

  Oversee the hydrogeologic and numerical groundwater flow and reactive transport modeling projects of junior staff.

  Acquire, organize, and analyze environmental field data.

  Develop statistical and graphical comparisons of model results and data.

  Prepare work plans and reports.

  Present study results to clients, regulators, and stakeholders.

  Develop project schedules and budgets.

  Support and mentor junior staff.

  Complete the work in a timely manner.

  Attend various STEM events.

  Other duties as assigned.

  Work experience, skills, and capabilities needed:

  Senior Hydrogeologist are expected to have extensive knowledge of groundwater flow and contaminant transport fundamentals and routinely apply those fundamentals to solve complex environmental problems. Your knowledge should allow you to perform unsupervised work pertaining to:

  General field characterization,

  Well drilling, coring/sampling, and monitoring well installation,

  Aquifer testing and analysis,

  Tracer testing,

  Data acquisition and evaluation,

  Conceptual site model development,

  Statistics and geostatistics,

  Geochemistry,

  Numerical groundwater flow and contaminant transport modeling,

  Parameter estimation and Iterative Ensemble Smoother calibration,

  Three-dimensional visualization and evaluation,

  Programming and scripting,

  Geology, geochemistry, and geophysics,

  Remedial design and evaluation,

  Applicable regulations and standards.

  Demonstrated leadership skills,

  Ability and commitment to mentor junior staff,

  Demonstrated ability to lead and work within a team to solve complex groundwater problems,

  Excellent oral and written communication, and customer service skills,

  Experience conducting remedial design and characterization evaluations,

  Strong analytical and problem-solving skills including a thorough understanding of hydrogeological and contaminant transport processes and principles,

  Demonstrated experience with PFAS/PFOA.

  This position is required to travel 10% of the time.

  Additional qualifications, experience, or proficiencies desired but not required:

  Numerical groundwater flow and transport modeling using parameter estimation and iterative ensemble smoother calibration techniques,

  Groundwater Vistas, Modflow-USG, MT3DMS and PHT3D-USG,

  GIS and 3-D Visualization and Analysis,

  Python and R programming.

  Technical knowledge, certifications/licenses, and software proficiency required:

  Valid driver’s license

  Microsoft Office

  Working Conditions and Physical Requirements:

  The employee exerts up to 10 pounds of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull or otherwise move objects, including the human body. While performing the duties of this job, the employee is regularly required to talk or hear. The employee is frequently required to stand, walk, sit, use hands to touch or feel, and reach with hands and arms. The employee is occasionally required to stoop, kneel, crouch, or crawl. Specific vision abilities required by this job include close vision and distance vision. The noise level in the work environment is usually quiet to moderate.

  Closing Date: Accepting applications on ongoing basis.

  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.

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