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Agencies › Department of the Interior › NAICS 541990

Department of the Interior (DOI): NAICS 541990 — All Other Professional, Scientific, and Technical Services

0open solicitations
$52.8Mobligated in FY2026
207contracts ending within 18 months

Open solicitations

Nothing is open in this category right now.

How DOI NAICS 541990 spends

FY2021$43.8M
FY2022$77.2M
FY2023$56.0M
FY2024$54.9M
FY2025$58.3M
FY2026$52.8M
FY2027*$151K
Contract obligations by federal fiscal year (October–September), from USASpending.gov award data. IDIQ ceilings are excluded. * The current year is partial, and USASpending lags 4–8 weeks.

DOI NAICS 541990 contracts expiring in the next 18 months

207 contracts worth $100.2M.

IncumbentBuyerWhatValueEndsEst. solicitationRecord
ADVENCO LLCReclamation541990 All Other Professional, Scientific, and Technical Services$888K (2 orders)14 October 2026Now / imminentUSASpending
HEARTLAND ENERGY PARTNERS LLCU.S. Geological Survey541990 All Other Professional, Scientific, and Technical Services$391K14 October 2026Now / imminentUSASpending
TANNER ENVIRONMENTAL SERVICES LLCBLM541990 All Other Professional, Scientific, and Technical Services$589K17 October 2026Now / imminentUSASpending
TURNSTONE ENVIRONMENTAL CONSULTANTS, INC.BLM541990 All Other Professional, Scientific, and Technical Services$72K17 October 2026Now / imminentUSASpending
FLYING PIG ART CONSERVATION, LLCNPS541990 All Other Professional, Scientific, and Technical Services$110K28 October 2026Now / imminentUSASpending
PRESERVE BLACK AMERICA ATLANTA, LLCNPS541990 All Other Professional, Scientific, and Technical Services$175K30 October 2026Now / imminentUSASpending
CCI FACILITY SUPPORT SERVICES, LLCNPS541990 All Other Professional, Scientific, and Technical Services$90K30 October 2026Now / imminentUSASpending
MANUTEK INCNPS541990 All Other Professional, Scientific, and Technical Services$50K30 October 2026Now / imminentUSASpending
HAMER ENVIRONMENTAL LIMITED PARTNERSHIPBLM541990 All Other Professional, Scientific, and Technical Services$637K31 October 2026Now / imminentUSASpending
HEARTLAND ENERGY PARTNERS LLCBureau of Indian Affairs and Bureau of Indian Education541990 All Other Professional, Scientific, and Technical Services$84K11 November 2026Now / imminentUSASpending
INALAB CONSULTING, INC.U.S. Geological Survey541990 All Other Professional, Scientific, and Technical Services$335K20 November 2026Now / imminentUSASpending
INALAB CONSULTING, INC.U.S. Geological Survey541990 All Other Professional, Scientific, and Technical Services$337K (2 orders)30 November 2026Now / imminentUSASpending
G2 ARCHAEOLOGYBLM541990 All Other Professional, Scientific, and Technical Services$162K30 November 2026Now / imminentUSASpending
WMA NOXIOUS WEED/RANGE SPECIALISTS LLCBLM541990 All Other Professional, Scientific, and Technical Services$134K30 November 2026Now / imminentUSASpending
MONTURE CREEK LAND MANAGEMENT, INC.BLM541990 All Other Professional, Scientific, and Technical Services$115K30 November 2026Now / imminentUSASpending

Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.

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