Aptim Hdr, LLC

Aptim Hdr, LLC, a wholly owned subsidiary of Aptim Federal Services, LLC, delivers Superfund site remediation and environmental field services to the Environmental Protection Agency as a prime contractor under the EPA Remedial Acquisition Framework: Remediation Environmental Services (RES) vehicle, competing on full-and-open basis without set-aside designations. The firm is based in Baton Rouge, Louisiana and operates as a for-profit limited liability company focused on hazardous-waste remediation and environmental systems protection.

Aptim Hdr's recent federal work centers on Superfund remedial action and optimization at contaminated sites across EPA regional offices. The vendor holds four prime delivery orders under the EPA RES framework, spanning environmental remediation work at the Argonaut Mine Superfund site in Jackson, California (EPA Region 9, $14.31 million ceiling, firm fixed price, completion January 2028); the Nyanza Chemical Waste Dump in Ashland, Massachusetts (EPA Region 1, $729 thousand ceiling, completion September 2026); the Sharon Steel Corp. Farrell Works Disposal Area in West Middlesex, Pennsylvania (EPA Region 3, $804 thousand ceiling, completion February 2026); and a substantially larger multi-year environmental systems project under EPA Region 5 ($2.18 billion combined potential value). All four awards carry full-and-open designations with no set-aside restrictions.

Customer concentration is functionally total within the Environmental Protection Agency. EPA Region 5 dominates by potential value, anchoring 99.4% of the combined $2.19 billion potential value across Aptim Hdr's tracked prime award portfolio, while Regions 1, 3, and 9 collectively account for the remainder. The EPA RES multiple-award vehicle carries all three visible task orders ($15.8 million combined potential value). Two awards (combined potential value $15 million) reach ultimate completion within the next twenty-four months, exposing the vendor to near-term recompete activity.

Aptim Hdr operates exclusively as a prime contractor; the source records show zero subcontract engagements. Service Contract Inventory reporting for FY2024 captured $621 thousand in invoiced federal service-contract revenue across 0.6 FTEs on prime records, with median government-paid hourly rates around $269/hr and senior labor pricing through $484/hr. The vendor does not engage named subcontractors on its SCI-reportable work. Williams Scotsman Inc. provides office trailer and CONEX rental support on the Argonaut Mine delivery order under subcontract effective May 2026. Activity in the source dataset spans six years (first award November 2018) but shows concentration in recent years, with two awards in 2024 and one in 2026; the footprint suggests Aptim Hdr functions as a specialized environmental remediation prime rather than a broad federal services provider.