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 | |
|---|---|---|---|
| Geiger, James W | Sr Sci Spec, Envrl Assmt Res | $78,169 | July 1, 2008 |
| Ghahreman, Mahnaz | Academic Hrly Rsrch | $25,380 | July 8, 2019 |
| Greco, Jennifer Mary | Assoc Res Sci, Geol | $83,566 | July 1, 2008 |
| Grigsby, Nathan P | Assistant Res Sci, Reservoir Geol | $87,792 | May 6, 2013 |
| Grimley, David Aaron | Prin Res Sci, Quaternary Geol | $97,862 | July 1, 2008 |
| Hacker, Brian L | Assistant Res Sci, Envrl Geol | $79,061 | July 12, 2010 |
| Hager, Samantha Louise | Sr Sci Spec, GIS | $75,250 | Nov. 14, 2022 |
| Hamilton, McKenzie Sutton | Academic Hrly Rsrch | $21,342 | Sept. 19, 2022 |
| Happ, Tina Marie | Administrative Aide | $59,554 | March 13, 2006 |
| Hearn, Lily Elyse | Vst Sci Spec, Envrl Assmt Res | $22,913 | Aug. 4, 2025 |
| Henry, Kathleen Mary | Office Administrator | $60,564 | July 1, 2008 |
| Hill, Ericka | Vst Sci Spec, Wetlands Geol | $58,656 | July 16, 2024 |
| Hunt, Ashly Marie | Sci Spec,Envrl Assmt Res | $65,000 | Dec. 9, 2024 |
| Huot, Sebastien | Vst Res Scholar | $24,102 | Feb. 9, 2015 |
| Ilic, Stefan | Sci Spec, GIS | $61,000 | Jan. 16, 2024 |
| Iranmanesh, Abbas | Assistant Res Sci, Geochemistry | $70,397 | July 1, 2008 |
| Johnson, Michelle Allison | Project Manager | $88,244 | April 6, 2015 |
| Jones, Aidan Kier | Academic Hrly Rsrch | $45,100 | June 3, 2024 |
| Kazanc Ozerinc, Feyza | Vst Res Scholar | $42,181 | Sept. 15, 2023 |
| Keefer, Donald A | Academic Hrly Rsrch | $30,784 | Aug. 16, 2017 |
| Khosravi, Mansour | Assoc Res Sci, Petroleum Geol | $119,241 | Aug. 15, 2014 |
| Klass, Ronald | Assoc Res Sci, Sci Data Prsvn | $97,678 | July 1, 2008 |
| Koirala, Dibya Raj | Postdoc Res Assoc | $66,521 | Jan. 8, 2024 |
| Korose, Christopher P | Prin Res Sci, Geol | $120,164 | July 1, 2008 |
| Krienert, Joseph M | Academic Hrly Rsrch | $30,845 | Oct. 3, 2019 |
| Kroll, Carolyn Ann | Assistant Res Sci, Envrl Geol | $77,409 | Sept. 20, 2011 |
| Lasemi, Yaghoob | Prin Res Sci, Reservoir Geol | $120,490 | July 1, 2008 |
| Lasemi, Zakaria | Academic Hrly Rsrch | $22,000 | Jan. 24, 2022 |
| Lee, Nathan Michael | Academic Hrly Rsrch | $42,250 | June 24, 2024 |
| Lemke, Brent E | Office Administrator | $52,945 | July 1, 2008 |
| Lenard, Michael Cory | Vst Sr Sci Spec, Geo Data | $75,000 | Sept. 23, 2024 |
| Lin, Yu-Feng | Prin Res Sci, Hydrogeologist | $136,822 | July 1, 2008 |
| Lind, Cameron Michael | Academic Hrly Rsrch | $23,948 | April 10, 2023 |
| Locke, Randall Anthony | Prin Res Sci, Geochemistry | $150,500 | July 1, 2008 |
| Lu, Yongqi | Prin Res Sci, Envrl Engr | $137,083 | July 1, 2008 |
| Lukhtai, Dmytro | Sr Sci Spec, Reservoir Prop | $73,691 | Jan. 28, 2019 |
| Lunawat, Smital Pravin | Grad Hourly | $22,311 | Jan. 25, 2024 |
| Lund, Deette M | Assoc Res Sci, Geospatial Data | $74,094 | July 1, 2008 |
| Mahat, Sunita | Vst Sci Spec, GIS | $64,120 | June 10, 2024 |
| Mandera, Katie M | Sci Spec, Map Std | $54,787 | Oct. 19, 2020 |
| Mattheus, Christopher Robin | Assoc Res Sci, Coastal Geol | $73,299 | March 2, 2020 |
| McLaughlin, Patrick Ian | Prin Res Sci, Bedrock Geol | $116,143 | Jan. 4, 2022 |
| Medlin, Scott Michael | Assoc Res Sci, GIS | $92,307 | July 8, 2024 |
| Mitchell, Raven Jezell | Academic Hrly Rsrch | $24,442 | Aug. 4, 2025 |
| Monson, Jessica L | Assoc Res Sci, Wetlands Geol | $73,800 | Aug. 15, 2011 |
| Morshed, Mehzabin | Academic Hrly Rsrch | $34,912 | Aug. 16, 2022 |
| Mwakanyamale-Gilkie, Kisa Edson | Assoc Res Sci, Geophysics | $96,585 | Dec. 8, 2014 |
| Myers, Alan R | Assoc Res Sci, Geol | $83,566 | July 1, 2008 |
| Noyes, Audra Marie | Assistant Res Sci, Wetlands Geol | $69,151 | July 13, 2016 |
| O'Connor, James | Sci Spec, Hist Min & Geol | $48,278 | Sept. 9, 2024 |
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.