Technical support services for CERCLA response actions at five sites
Awarded Limited / Sole Source Justification Posted
- Solicitation number
- 140P2126Q0096
- Agency
- National Park Service Department of the Interior
- Set-aside
- No set-aside
Opportunity facts
- Contract number
- GS00F116CA-140P2126F0148 Federal contract award
- NAICS code
- 541620 Environmental Consulting Services
- Points of contact
-
- Sarah Welch sarah_welch@ios.doi.gov (202) 354-3974
Notice details come from SAM.gov. Updated .
About this opportunity
The National Park Service, Department of the Interior, awarded a sole-source contract to Vanasse Hangen Brustlin (VHB) for technical support services addressing hazardous substances under CERCLA at five contaminated sites in Washington, DC on September 22, 2026, under GSA Multiple Award Schedule contract GS-00F-116CA.
The justification cites two authorities: GSAM/R 538.7104-3 and CERCLA Title 42 USC 9609(e), which expressly authorizes single-source procurement of expert services for civil actions. NPS asserts VHB is the only source capable of providing the required services at the necessary quality level due to specialization. VHB has served as Cleanup Lead on all five contaminated site teams since 2018 and possesses detailed knowledge of historical investigations, technical issues, interrelated sites, and their connection to Anacostia River litigation. VHB also supports DOI attorney-advisors in active cost-recovery litigation and settlement negotiations and demonstrates proficiency with DOI's Cost Tracking Tool for cost recovery documentation.
The five sites are the Anacostia River Sediment Project, Kenilworth Park Landfill, Poplar Point Site, Watts Branch Sediment Site, and Washington Gas—East Station Site. Work involves completing CERCLA phases through Record of Decision issuance and cleanup remedy implementation. The period of performance includes two one-year option periods. VHB is one of five companies holding Blanket Purchase Agreements under NPS's Park Planning Facilities and Lands Environmental Management Program for Contaminated Site Cleanup. Place of performance is Washington, DC. NAICS 541620 (Environmental Consulting Services); PSC F115.
Notice text
CERCLA technical services to support NPS' oversight of five contaminated sites in Washington DC; includes two one-year option periods. Details are in the attached sole source justification. Awarded contract GS00F116CA to unknown vendor for unknown amount on 2026-09-22.
Attachments
| File | Type | Posted |
|---|---|---|
| Sole_Source_Justification_-_NACE_multi-site_-REDACTED_1.pdf |
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