# SAM #140P2126Q0096

Technical Support Services for CERCLA Cleanup at Five National Park Service Sites in Washington, D.C.

**Buyer:** DOI Office of Acquisition and Property Management
**Posted:** September 23, 2026
**Identifier:** 140P2126Q0096
**NAICS:** 541620, 562910

This opportunity is for technical support services related to hazardous substance cleanup at five contaminated sites in Washington, D.C., managed by the National Park Service.
- The procurement is a sole source justification, with Vanasse Hangen Brustlin (VHB) named as the sole source contractor.
- VHB has been the cleanup lead since 2018 and possesses unique expertise in CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act) remedial actions.
- Services include oversight of CERCLA response actions, environmental assessment, cleanup planning, legal negotiations, and cost recovery support.
- Sites include the Anacostia River Sediment Project and Kenilworth Park Landfill, among others.
- The contract covers completion of CERCLA phases through Record of Decision issuance and cleanup implementation.
- The period of performance includes a base period with two one-year option periods.
- No specific product line items are listed; the focus is on specialized technical services.
- The requirement emphasizes multi-site support and advanced environmental remediation expertise.

### Description

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.

[View original listing](https://sam.gov/opp/70f1b9acd1b24b70a5eddce0a9af1938/view)