Onterris, Inc. Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (6 lists). Names and jurisdictions are as filed.
- 2021-03-24: Subsidiary Advanced GeoServices Corp.; Jurisdiction Pennsylvania.
- 2021-03-24: Subsidiary Air, Water and Soil Laboratories, Inc.; Jurisdiction Virginia.
- 2021-03-24: Subsidiary Analytical Environmental Services; Jurisdiction California.
- 2021-03-24: Subsidiary Emerging Compounds Treatment Technologies, Inc.; Jurisdiction Massachusetts.
| Annual report filed | Subsidiary | Jurisdiction |
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| 2021-03-24 | Advanced GeoServices Corp. | Pennsylvania |
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| 2021-03-24 | Air, Water and Soil Laboratories, Inc. | Virginia |
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| 2021-03-24 | Analytical Environmental Services | California |
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| 2021-03-24 | Emerging Compounds Treatment Technologies, Inc. | Massachusetts |
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| 2021-03-24 | Enthalpy Analytical, LLC | Delaware |
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| 2021-03-24 | Environmental Planning Specialists, Inc. | Georgia |
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| 2021-03-24 | Envirosystems, Incorporated | New Hampshire |
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| 2021-03-24 | ES Engineering Services, LLC | Delaware |
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| 2021-03-24 | FRS Environmental Remediation, Inc | Florida |
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| 2021-03-24 | Leymaster Environmental Consulting, LLC | California |
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| 2021-03-24 | Montrose Air Quality Services, LLC | Delaware |
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| 2021-03-24 | Montrose Environmental Group AB | Sweden |
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| 2021-03-24 | Montrose Environmental Group GmbH | Germany |
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| 2021-03-24 | Montrose Environmental Group Ltd. | British Columbia |
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| 2021-03-24 | Montrose Environmental Solutions, LLC | Delaware |
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| 2021-03-24 | Montrose Foreign Holdings, Inc. | Delaware |
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| 2021-03-24 | Montrose Measurements and Analytics, LLC | Delaware |
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| 2021-03-24 | Montrose Planning & Permitting, LLC | Delaware |
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| 2021-03-24 | Montrose Services, LLC | Delaware |
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| 2021-03-24 | Montrose Waste-To-Resources, LLC | Delaware |
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| 2021-03-24 | Montrose Water and Sustainability Services, Inc. | Delaware |
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| 2021-03-24 | MSE Group, LLC | Texas |
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| 2021-03-24 | Nautilus Environmental, Inc. | California |
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| 2021-03-24 | PARS Environmental, Inc. | New Jersey |
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| 2021-03-24 | The Center for Toxicology and Environmental Health, LLC | Arkansas |
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| 2021-03-24 | CTEH Leasing, LLC | Arkansas |
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| 2021-03-24 | CTEH Properties, LLC | Arkansas |
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| 2021-03-24 | CTEH Government Services, LLC | Arkansas |
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| 2021-03-24 | CTEH IT Services, LLC | Arkansas |
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