Active
Woman Owned Small BusinessWoman Owned BusinessSmall Business
Overview
- Legal name
- RHITHRON ASSOCIATES INC
- Registered location
- MISSOULA, MT, USA
- Website
- Company website ↗
- Primary NAICS
- 541620 — Environmental Consulting Services
- Latest award activity
- Aug 28, 2026
Read company summary
RHITHRON ASSOCIATES INC is associated with UEI D21EKF7FZJ25 and CAGE 3FQ91 in public federal records. AcornBids currently links 6 prime awards totaling $143.9K in obligations to this entity. Its largest recorded federal customer by obligations is Department of the Interior. Its recorded federal awards include work classified as Environmental Consulting Services; Testing Laboratories and Services; All Other Professional, Scientific, and Technical Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541620 (Environmental Consulting Services). Its public SAM.gov registration lists MISSOULA, MT, USA.
At a glance
Lifetime prime obligations$143.9K
Prime awards6
Awards with future end dates1
Top-agency concentration100.0%
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Oct 8, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- RHITHRON ASSOCIATES INC
- UEI
- D21EKF7FZJ25
- CAGE
- 3FQ91
- Registered address
- 33 FORT MISSOULA RD, MISSOULA, MT, 59804, USA
- Registration status
- Active
- Primary NAICS
- 541620 — Environmental Consulting Services
- SAM activation
- Nov 10, 2025
- Initial registration
- May 30, 2003
- Entity start
- Jan 10, 2002
- SAM updated
- Nov 10, 2025
- Registration expires
- Nov 7, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- MT, USA
Research brief
Source facts
- Loaded prime-award records link 6 awards and $143,874 in reported obligations to this legal entity. Source
- Recorded awards include Environmental Consulting Services (NAICS 541620); this classification is not proof of every company capability. Source
- An example award describes: MACROINVERTEBRATES ANALYSIS, KLAMATH INVENTORY NETWORK & MONITORING NETWORK, JACKSON COUNTY, OREGON Source
Federal award analysis
Net transaction obligations by federal fiscal period.
Selected transaction obligations$-8.3K
Prime contracts
Reported transaction obligations by federal fiscal period; includes deobligations. Missing transactions are not estimated. Coverage: 6 of 6 selected awards. Select a period to explore its awards.
Funding change
Dated, valued transaction obligations in equal-length adjacent periods; missing records are unknown. Default: last completed federal fiscal year. Percentage is unavailable when the prior period has no positive reported obligations.
| Measure | Reported value |
|---|---|
| Current period | Oct 1, 2025 – Sep 30, 2026 |
| Current obligations | $18.1K |
| Prior period | Oct 1, 2024 – Sep 30, 2025 |
| Prior obligations | $-26.4K |
| Change | $44.4K |
| Growth | Not comparable |
Where the work is performed
AKMEVTNHWAIDMTNDMNWIMINYMAORNVWYSDIAILINOHPANJCTRICAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFL
State tile map; darker tiles have larger absolute net obligations. Outlined tiles indicate net deobligations. Unshaded tiles have no reported transactions in this selection. Other locations appear in the table.
Agencies
| Category | Period obligations | Awards |
|---|---|---|
| Department of the Interior | $40.2K | 5 |
| Department of Commerce | $-48.5K | 1 |
Offices
| Category | Period obligations | Awards |
|---|---|---|
| PWR PORE MABO (84000) | $42.2K | 3 |
| PWR OLYM MABO(83000) | $-225 | 1 |
| OFC OF ACQUSITION GRANTS-NATIONAL | $-1.7K | 1 |
| DEPT OF COMMERCE NOAA | $-48.5K | 1 |
Naics
| Category | Period obligations | Awards |
|---|---|---|
| 541620 — Environmental Consulting Services | $41.1K | 3 |
| 541380 — Testing Laboratories and Services | $-865 | 2 |
| 541990 — All Other Professional, Scientific, and Technical Services | $-48.5K | 1 |
Psc
| Category | Period obligations | Awards |
|---|---|---|
| B533 — Water Quality Studies | $42.2K | 3 |
| Q301 — Reference Laboratory Testing | $-1.7K | 1 |
| B516 — Animal and Fisheries Studies | $-48.7K | 2 |
Vehicles
| Category | Period obligations | Awards |
|---|---|---|
| GS10F0138V | $-1.7K | 1 |
| Unclassified | $-6.6K | 5 |
Set Asides
| Category | Period obligations | Awards |
|---|---|---|
| SMALL BUSINESS SET ASIDE - TOTAL | $-865 | 2 |
| Unclassified | $-1.7K | 1 |
| NO SET ASIDE USED. | $-5.7K | 3 |
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 140P8426P0066MACROINVERTEBRATES ANALYSIS, KLAMATH INVENTORY NETWORK & MONITORING NETWORK, JACKSON COUNTY, OREGON | Department of the Interior | $18.1K | Aug 28, 2026 | Aug 31, 2027 |
| 140P8425P0082MACROINVERTEBRATES ANALYSIS, KLAMATH INVENTORY NETWORK & MONITORING NETWORK, JACKSON COUNTY, OREGON | Department of the Interior | $24.8K | Sep 3, 2025 | Aug 31, 2026 |
| 140G0122F0061TAXONOMIC IDENTIFICATION OF ALGAL & MACROINVERTEBRATE COMMUNITY SAMPLES | Department of the Interior | $36.7K | Jan 12, 2022 | Oct 31, 2023 |
| 140P8321P0036IDENTIFICATION OF BENTHIC MACROINVERTEBRATES (BMI) FROM MOUNTAIN LAKE AND STREAMS IN FIVE NPS AREAS IN THE PACIFIC NORTHWEST. BASE PERIOD INCLUDES 66 SAMPLES. INCLUDES FOUR… | Department of the Interior | $42.1K | Jun 14, 2021 | May 31, 2025 |
| 1305M324P0215ANALYSIS OF DRIFT SAMPLES PER THE ATTACHED STATEMENT OF NEED | Department of Commerce | $0 | Jun 1, 2024 | Apr 30, 2025 |
| 140P8422P0080MACROINVERTEBRATES TESTING ANALYSIS, KLAMATH NETWORK OF PARKS, SOUTHERN OREGON AND NORTHERN CALIFORNIA | Department of the Interior | $22.3K | Sep 20, 2022 | Aug 30, 2023 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Nov 10, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | May 30, 2003 |
| Entity start | Jan 10, 2002 |
Registration classifications: Self Certified Small Disadvantaged Business, Woman Owned Small Business, Woman Owned Business, Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 541380 — Testing Laboratories and Services | Not reported |
| 541620 — Environmental Consulting Services | Not reported |
| 541990 — All Other Professional, Scientific, and Technical Services | Not reported |
| 561990 — All Other Support Services | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| WEASE BOLLMAN | Government business | Contact method not published | SAM registration | Not available |
| SEAN SULLIVAN | Alternate government business | Contact method not published | SAM registration | Not available |
| WEASE BOLLMAN | Electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 541380 — Testing Laboratories and Services
- 541620 — Environmental Consulting Services
- 541990 — All Other Professional, Scientific, and Technical Services
- 561990 — All Other Support Services
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
Disclosed relationships only. Missing records do not establish that a contractor has no partners. Ambiguous parent award identifiers are excluded.
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