RHITHRON ASSOCIATES INC (MT)
Registration and award facts
SAM.gov registration as of
- Net obligations since FY2008
- $1.43M
- $1,428,665under this UEI
- FY2026 obligations
- $18.05K†
- $18,050Provisional
- Awards and orders
- 74
- with positive net obligations4 IDV vehicles held
- Latest action
- Aug 28, 2026
- SAM.gov registration
- Active
- Registration expiration date Sep 15, 2027
Registration
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Business start date
- Jan 10, 2002 (24 years)
- Location
- Missoula, MT
- State of incorporation
- Montana
- Purpose of registration
- All Awards
- Website
- rhithron.com
† FY2026 obligations (provisional; DoD awards signed after Jul 28, 2026 are not yet public).
Source: SAM.gov entity registration and FPDS contract actions recorded under UEI D21EKF7FZJ25. GovChime does not check exclusions.
Performance
Net obligations recorded under this UEI since FY2008. Top lists show the largest five by share of this vendor's net obligations; the shares do not sum to 100%.
Net obligations by fiscal year of action
- FY2026: $18,050 (provisional)
- FY2025: -$26,361 (de-obligation)
- FY2024: $76,620
- FY2023: $89,897
- FY2022: $50,773
- FY2021: $25,800
- FY2020: $14,660
- FY2019: $100,041
Show all 19 yearsEarlier years (FY2008–FY2018)
- FY2018: $40,055
- FY2017: $93,130
- FY2016: $80,680
- FY2015: $47,340
- FY2014: $145,895
- FY2013: $134,118
- FY2012: $63,829
- FY2011: $264,009
- FY2010: $107,222
- FY2009: $57,220
- FY2008: $45,688
Total across 19 fiscal years: $1,428,665
Net de-obligation in that fiscal year (obligations withdrawn).
Top awarding agencies
- Department of the Interior$921,887, 64.5%
- Department of Commerce$443,723, 31.1%
- Environmental Protection Agency$49,850, 3.5%
- Department of Agriculture$13,205, 0.9%
Top awarding sub-agencies
- National Park Service$529,489, 37.1%
- National Oceanic and Atmospheric Administration$443,723, 31.1%
- U.S. Geological Survey$341,003, 23.9%
- Environmental Protection Agency$49,850, 3.5%
- U.S. Fish and Wildlife Service$43,835, 3.1%
Top NAICS by obligations
- 541620Environmental consulting services$701,222, 49.1%
- 541380Testing laboratories$347,071, 24.3%
Top product and service codes by obligations
- B533Special studies/analysis- water quality$458,959, 32.1%
- B516Special studies/analysis- animal/fisheries$374,770, 26.2%
- Q301Medical- laboratory testing$129,936, 9.1%
- R499Other professional services$82,220, 5.8%
- F020Natural resources/conservation- fisheries resources management$69,260, 4.8%
Capabilities
NAICS codes
- 541620Environmental Consulting Services(primary)Small
- 561990All Other Support ServicesSmall
- 541380Testing Laboratories and ServicesSmall
- 541990All Other Professional, Scientific, and Technical ServicesSmall
Small: small business for that NAICS, self-certified in SAM.gov registration.
SBA certifications
No certification in the SBA profile data.
Business types self-reported in SAM.gov registration:
- Women-Owned Small Business
- Women-Owned Business
- Self Certified Small Disadvantaged Business
Federal Capability Statement
Taxonomic determinations of aquatic invertebrates; algae, periphyton, diatoms, phytoplankton, zooplankton, fish diet analyses, metric calculations; interpretive reports; statistical analysis of bio/habitat data; study design/consultation regarding sampling, analysis, and QA; field sampling.
Capabilities & Services
Contracts
Latest awards and orders
- 140P8426P0066Purchase orderDepartment of the InteriorNational Park ServiceLatest action
- 140P8425P0082Purchase orderDepartment of the InteriorNational Park ServiceLatest action
- 140G0122F0061Delivery orderunder a federal supply schedule (FSS)Department of the InteriorU.S. Geological SurveyLatest action
- 140P8321P0036Purchase orderDepartment of the InteriorNational Park ServiceLatest action
- 1305M324P0215Purchase orderDepartment of CommerceNational Oceanic and Atmospheric AdministrationLatest action
- 140P8422P0080Purchase orderDepartment of the InteriorNational Park ServiceLatest action
- 140P8424P0010Purchase orderDepartment of the InteriorNational Park ServiceLatest action
- 140P3023F0138Delivery orderunder a federal supply schedule (FSS)Department of the InteriorNational Park ServiceLatest action
- 140P2124P0102Purchase orderDepartment of the InteriorNational Park ServiceLatest action
- 140P8419P0100Purchase orderDepartment of the InteriorNational Park ServiceLatest action
Contact Info
As of . Source: SAM.gov Points of Contact.
SAM.gov registration for RHITHRON ASSOCIATES INC lists a physical address and a separate mailing address, along with 5 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.
Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).
Physical Address
33 FORT MISSOULA RD
MISSOULA, MT, 59804
USA
Mailing Address
33 FORT MISSOULA RD
MISSOULA, MT, 59804
USA
Government Business Contact
SEAN SULLIVAN
OPERATIONS OFFICER
33 FORT MISSOULA ROAD
MISSOULA, MT, 59804
USA
Electronic Business Contact
Wease Bollman
33 FORT MISSOULA ROAD
Missoula, MT, 59804
USA
Past Performance Contact
SEAN SULLIVAN
OPERATIONS OFFICER
33 FORT MISSOULA ROAD
Missoula, MT, 59804
USA
Government Business Alternate Contact
Wease Bollman
33 FORT MISSOULA ROAD
MISSOULA, MT, 59804
USA
Past Performance Alternate Contact
WEASE BOLLMAN
33 FORT MISSOULA ROAD
Missoula, MT, 59804
USA
Additional Details
As of . Source: SAM.gov Entity Registration.
RHITHRON ASSOCIATES INC has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires September 15, 2027.
Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.
Compliance & Risk Assessment
Source: SAM.gov FAR responsesSuspension/Debarment Status
SAM.gov registration reports no active exclusion
Public Display
Entity information is publicly displayed
Disaster Relief Registry
Registered for disaster relief contracting
Bonding Information
No bonding information provided
EDI
Not declared in SAM.gov
Business Structure
Source: SAM.govRegistration Details
Source: SAM.govInitial Registration
Last Update
Registration Activation
Fiscal Year End
Country of Incorporation
Congressional District
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