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Department of the Interior (DOI): NAICS 541620 — Environmental Consulting Services

0open solicitations
$53.9Mobligated in FY2026
359contracts ending within 18 months

Open solicitations

Nothing is open in this category right now.

How DOI NAICS 541620 spends

FY2021$35.5M
FY2022$107.9M
FY2023$117.0M
FY2024$110.2M
FY2025$95.4M
FY2026$53.9M
FY2027*$998K
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 541620 contracts expiring in the next 18 months

359 contracts worth $176.4M.

IncumbentBuyerWhatValueEndsEst. solicitationRecord
SUNDANCE CONSULTANTS, LLCBLM541620 Environmental Consulting Services$100K12 October 2026Now / imminentUSASpending
STILLWATER ECOSYSTEM WATERSHED & RIVERINE SCIENCESReclamation541620 Environmental Consulting Services$336K13 October 2026Now / imminentUSASpending
SPECPRO SUSTAINMENT AND ENVIRONMENTAL, LLCNPS541620 Environmental Consulting Services$2.9M19 October 2026Now / imminentUSASpending
WSP USA SOLUTIONS INCNPS541620 Environmental Consulting Services$310K30 October 2026Now / imminentUSASpending
CLEARCHANNELVM, LLCBureau of Indian Affairs and Bureau of Indian Education541620 Environmental Consulting Services$214K30 October 2026Now / imminentUSASpending
WHITETAIL ENVIRONMENTAL, LLCBureau of Indian Affairs and Bureau of Indian Education541620 Environmental Consulting Services$54K30 October 2026Now / imminentUSASpending
NATURESERVEBLM541620 Environmental Consulting Services$783K31 October 2026Now / imminentUSASpending
MARSTEL-DAY, LLCNPS541620 Environmental Consulting Services$538K31 October 2026Now / imminentUSASpending
AARCHER, INC.BLM541620 Environmental Consulting Services$92K (2 orders)31 October 2026Now / imminentUSASpending
MONTURE CREEK LAND MANAGEMENT, INC.U.S. Fish and Wildlife Service541620 Environmental Consulting Services$300K01 November 2026Now / imminentUSASpending
ASC GROUP INCDepartmental Offices541620 Environmental Consulting Services$65K (2 orders)01 November 2026Now / imminentUSASpending
ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLCBLM541620 Environmental Consulting Services$416K02 November 2026Now / imminentUSASpending
COPPERHEAD ENVIRONMENTAL CONSULTING INCBLM541620 Environmental Consulting Services$49K13 November 2026Now / imminentUSASpending
PALEOWEST LLCBLM541620 Environmental Consulting Services$38K13 November 2026Now / imminentUSASpending
ECO & ASSOCIATES, INC.BLM541620 Environmental Consulting Services$240K15 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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