Ja Underground
City-funded organization
Ja Underground, PC is the New York affiliate of Delve Underground (formerly McMillen Jacobs Associates), a tunnel and underground infrastructure engineering firm, and is the prime consultant on the Department of Environmental Protection's design contract for the Rondout-West Branch Bypass Tunnel, a Delaware Aqueduct leak-repair project. That contract, "Bypass Program Engineering Support Dutchess Cnty NYS," was awarded through a competitive RFP and accounts for its entire $46 million in active city contracts as of August 2026. Since 2012 it has been awarded $83 million across five contracts with the Department of Environmental Protection and Department of Design and Construction, every one of them competitively bid through an RFP, with $76 million paid to date.
- Industry (per city contracts)
- Professional Services
- City contracts (active)
- $46,157,507 · 1 contract
- Awarded all-time
- $83,265,025 · 5 since 2012, incl. expired
- Paid to date
- $75,736,408
Holds contracts at
- Department of Design and Construction City agency
- Department of Environmental Protection City agency
City contracts
Registered city contracts, largest first by current contract value (not amount spent): running now, then registered to start later, then ended. Totals count every registered contract. Each line shows its Checkbook contract ID. The tag on each row is how it was awarded (“no-bid” = non-competitive).
- Bypass Program Engineering Support Dutchess Cnty NYS Department of Environmental Protection · CT182620121439724 $46,157,507
- Design for Increae Capacity of Upper Catskill Acqueduct Department of Environmental Protection · CT182620131428914 · ended 2024 $21,992,231
- REI SERVICES FOR THE NEW 20" SUB-AQUEOUS WATER MAIN EXTENSIO Department of Design and Construction · CT185020151428606 · ended 2020 $5,937,796
- 20" Sub Aqueous Water Main, Bronx Department of Design and Construction · CT185020181414416 · ended 2022 $5,415,496
- Design & DSDC for Decommis/Recons of Honk Falls Dam Department of Environmental Protection · CT182620191406543 · ended 2023 $3,761,995