IL State Geological Survey
Data received June 2026 • FT/PT status not provided. Hire dates are most recent hire date.
Full-time employees
159
Median pay
$70,397
Average pay
$76,133
IL State Geological Survey
Employees by pay range
Note: To learn how the Post-Dispatch calculates figures such as the number of full-time employees or median pay, as well as other important explanations and caveats, please see the About page.
Employees
Click on one of the headers below to sort a column. Data shown reflects actual gross pay for 2025, except where noted otherwise.
| Position | Gross pay | Date hired | |
|---|---|---|---|
| Okwen, Roland T | Prin Res Sci, Reservoir Engr | $159,825 | Feb. 16, 2011 |
| Oliver, Kai Daniel | Vst Sci Spec, Sci | $57,680 | Sept. 11, 2023 |
| Omovie, Sheyore John | Postdoc Res Assoc | $60,200 | May 1, 2024 |
| Owens Navarro, Mario | Sci Spec, Wetlands Geol | $58,852 | Sept. 5, 2023 |
| Padilla, Richard K | DRILLER | $81,160 | Nov. 2, 2008 |
| Pandey, Upasana | Postdoc Res Assoc | $60,200 | Dec. 16, 2024 |
| Paton, Timothy Robert | Sci Spec, Bedrock Geol | $60,200 | July 11, 2022 |
| Paul, Robert F | Sr Sci Spec, GIS | $70,000 | June 3, 2024 |
| Pearce, Kristen Elea-Jean | Sci Spec, Coastal Anlys | $68,227 | Sept. 19, 2022 |
| Penna, Christina Marie | Sr Sci Spec, Envrl Geol | $71,638 | Nov. 9, 2015 |
| Pentrak, Martin Paul | Assoc Res Sci, Geochem | $77,116 | April 3, 2012 |
| Picado, Eduardo | Vst Sci Spec, Map Std | $53,560 | June 26, 2023 |
| Plankell, Eric Thomas | Prin Res Sci, Wetlands Geol | $96,457 | July 1, 2008 |
| Pociask, Geoffrey E | Prin Res Sci, Wetlands Geol | $113,210 | July 1, 2008 |
| Quirk, Laura Marie | Assistant Res Sci, Envrl Geol | $79,958 | April 13, 2015 |
| Rhoades, Neil C | Sci Spec, Envrl Assmt Res | $60,057 | Jan. 16, 2018 |
| Rosario, Liane | Sci Spec, Coastal Anlys | $68,227 | Sept. 18, 2023 |
| Rushing, Alexander William | Sci Spec, Hist Mine & Geol | $61,000 | Sept. 12, 2022 |
| Saccardi, Brian Eugene | Postdoc Res Assoc | $43,253 | Sept. 1, 2023 |
| Saha, Partha | Vst Assistant Res Sci, Engr | $91,800 | Nov. 1, 2023 |
| Sanchez, Alexandra Theresa | Sr Sci Spec, Quat Geol | $58,710 | Aug. 1, 2023 |
| Sargent, Steven Lee | Instr & Measurement Tech III | $20,336 | March 23, 2026 |
| Sefcik, Michael R | IT Technical Associate | $62,884 | Sept. 11, 2017 |
| Shao, Hongbo | Assoc Res Sci, Geochemistry | $103,262 | May 4, 2015 |
| Sheffield, Nicolette Ann | Sr Sci Spec, Wetlands Geol | $64,099 | Aug. 6, 2019 |
| Siddique, Afrah Khalid Ahmed | Vst Assistant Res Sci, Resvr Eng | $105,000 | Nov. 6, 2024 |
| Singh, Sohan Bir | Postdoc Res Assoc | $72,107 | Aug. 1, 2025 |
| Situ, Mike | Grad Hourly | $24,271 | April 18, 2023 |
| Sompong, Derek Edward | IT Technical Associate | $89,798 | Sept. 6, 2011 |
| Spaeth, Matthew P | Sr Sci Spec, Envrl Assmt Res | $75,777 | July 1, 2008 |
| Spaulding, Kaitlyn Ruth | Sci Spec, GIS | $61,000 | June 3, 2024 |
| Spitzer, Elizabeth Marie | Sr Sci Spec, Coastal Anlys | $68,227 | April 4, 2022 |
| Stritch, Thomas S | Sci Spec, Wetlands Geol | $60,437 | Nov. 1, 2021 |
| Stumpf, Andrew J | Prin Res Sci, Quaternary Geol | $98,642 | July 1, 2008 |
| Svenningsen, Trina Marie | Assistant Res Sci, Envrl Geol | $65,569 | Oct. 2, 2017 |
| Swanson, Daniel R | Academic Hourly - Research | $46,518 | June 3, 2013 |
| Symanski, Kristopher Lee | Vst Sci Spec, Envrl Assmt Res | $20,000 | Aug. 18, 2025 |
| Taft, Kendall Lee | Assistant Res Sci, Reservoir Geol | $110,418 | Feb. 21, 2022 |
| Tharp, Darren Edward | Driller Laborer | $61,296 | April 15, 2024 |
| Thomas, Michael Jared | Sr Sci Spec, Geol Collect | $71,484 | April 5, 2016 |
| Thomason, Jason F | Prin Res Sci, Hydrogeologist | $119,436 | July 1, 2008 |
| Thurston, Daniel S | Research Systems Administrator | $111,507 | July 1, 2008 |
| Trauth, Alexandra Cecile | Office Support Associate | $24,941 | Sept. 27, 2022 |
| Trela, Jarek | Assistant Res Sci, Econ Geol | $89,402 | Sept. 1, 2021 |
| Tuli, Fatima Tuz Zafrin | Vst Sr Sci Spec, Geoscience | $75,000 | Sept. 16, 2024 |
| Veldhuizen, Hannah Juliette | Academic Hrly Rsrch | $69,204 | Aug. 16, 2020 |
| Vowels, Lily Katherine | Vst Sci Spec, Envrl Assmt Res | $20,000 | Aug. 16, 2025 |
| Wagner, Stephanie A | Assistant Res Sci, Envrl Geol | $79,881 | July 1, 2013 |
| Waqar, Muhammad | Grad Res Assistant | $30,149 | Jan. 22, 2024 |
| Webb, Nathan D | Prin Res Sci, Geol | $114,505 | May 18, 2009 |
Note: To learn how the Post-Dispatch calculates figures such as the number of full-time employees or median pay, as well as other important explanations and caveats, please see the About page.