PSC Z1LC — Maintenance of Tunnels and Subsurface Structures: federal contracts

$7.0Mobligated in FY2025
-1.4%change FY2024→FY2025
0open solicitations
2new awards, last 12 months

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Open solicitations

No open solicitations carry this PSC right now.

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What PSC Z1LC covers

Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Facilities & Construction › Facility Related Services.

FY2022$5.3M
FY2023$1.4M
FY2024$7.1M
FY2025$7.0M
FY2026*$2.2M
FY2027*$313K

USASpending.gov contract obligations by federal fiscal year of the action. * A year that ended under 120 days ago is still filling in.

Who is winning new PSC Z1LC work

Contractors ranked by obligations on awards that started FY2024–FY2027 to date.

ContractorObligationsAwards
HOOKER CREEK INC$9.2M1
RTX BBN TECHNOLOGIES, INC.$3.6M1
INNOVATORS TRANSPORTATION LLC$315K1
TST TACTICAL DEFENSE SOLUTIONS, INC.$251K1
WATER WORKS SOLUTIONS INC$95K1
BAT CONSERVATION INTERNATIONAL, INC.$19K1

How competitive is PSC Z1LC?

  • 71.2% of obligations on these awards were competed.
  • 73.0% went to small businesses.
  • The five largest contractors hold 99.9% across 6 contractors.

NAICS codes used on PSC Z1LC awards

NAICSIndustryShare
237990Other Heavy and Civil Engineering Construction72.2%
811210Electronic and Precision Equipment Repair and Maintenance26.9%
561990All Other Support Services0.7%
813312Environment, Conservation and Wildlife Organizations0.1%

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