Federal Capture Intelligence

Top DOI environmental consulting contractors (NAICS 541620)

Contract actions: October 1, 2021 – October 13, 2026 Updated October 14, 2026 Department of the Interior agency guide NAICS 541620 · Environmental Consulting Services
Latest 12 months
$75.3M
Net obligations · Down $6.2M vs. $81.5M preceding
Prime contractors
220
With positive obligations in the latest 12 months

Research the DOI federal contracting market for environmental consulting under NAICS 541620. Compare top federal contractors and market share, reported contract obligations and spending trends, funding-office attribution, recent award activity, and contract types, competition, and procurement methods.

Contract obligation trends for environmental consulting at the Department of the Interior

Federal records show $535.9M in net obligations across 3,358 awards in environmental consulting at the Department of the Interior from Oct 1, 2021 through Oct 13, 2026. This market accounts for 2.0% of $26.8B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations decreased 7.6% from $81.5M to $75.3M. 46 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY27 is year-to-date through Oct 13, 2026; earlier years show complete fiscal-year totals.

FY27 year-to-date: $0 versus $0 through the same date in FY26 (Not comparable).
Net obligations · complete fiscal yearNet obligations · FY27 YTDContract actions
View fiscal-year data table
Fiscal yearNet obligationsContract actionsCoverage
FY2022$120.2M1,789Complete
FY2023$144.9M1,770Complete
FY2024$113.9M1,776Complete
FY2025$81.5M1,295Complete
FY2026$75.3M1,014Complete

Market at a glance

All reported prime contract awards
All-period net obligations
$535.9M
3,358 awards · 818 prime contractors
Latest 12-month movement
−7.6%
$75.3M vs. $81.5M
Leading eight prime share
39.8%
Share held by the eight leading prime contractors in the latest 12 months
View agency share, denominators, and set-aside reporting
Agency context
2.0% of $26.8B in agency-wide net obligations.
Set-aside share when reported
67.9% of 1,470 awards with reported set-aside status.
Set-aside reporting
998 set aside · 472 no set-aside · 1,888 not reported

What changed in the last 12 months?

Oct 14, 2025–Oct 13, 2026, compared with Oct 14, 2024–Oct 13, 2025.

Competitive shifts

TETRA TECH, INC. climbed the most in the contractor rankings
#75→#7Up 68 places
The contractor accounts for 2.4% of positive obligations across 4 reported actions.
VANASSE HANGEN BRUSTLIN INC gained the most market share
1.7%→7.5%+5.8 percentage points
The contractor now ranks #3 by positive obligations, based on 35 reported actions.
19 contractors were first observed in this market during the latest 12 months
$4.3MLatest 12-month obligations
Contractor-level obligations and first-observed dates appear below. “First observed” applies only to this market and the period shown.
View 19 contractors
ContractorLatest 12 months

Buyer demand

Reported obligations through NATIONAL OPERATIONS CENTER decreased
$16.9M→$1.6M−$15.3M
Latest-period activity spans 91 awards across 29 prime contractors.
Reported obligations through ACQUISITION MANAGEMENT DIVISION increased
$1.5M→$5.1M+$3.6M
Latest-period activity spans 58 awards across 26 prime contractors.
View 3 additional material changes

Competitive shifts

FISHBIO was the largest newly observed contractor
$1.3MLatest 12-month obligations
First observed in this market on Apr 30, 2026, the contractor now ranks #16 by positive obligations across 2 reported actions.
LAWELAWE TRAINING SERVICES, INC. recorded the largest net deobligation
$0→−$1.1M−$1.1M
The contractor now is unranked by positive obligations, based on 1 reported action.
How these findings are calculated

Findings are selected from matched-period changes in obligations, share, rank, funding offices, concentration, reported set-asides, material award actions, and agency-peer outliers. Related signals are combined, and only material evidence-backed changes are shown. Review the full methodology.

Federal contract obligations by funding office

See how positive obligations were attributed across funding offices in the 12 months ending Oct 13, 2026.

18.9% of positive obligations were attributed to MP-REGIONAL OFFICE. That represents $14.6M, up $2.0M from the preceding 12 months.

Latest 12-month share of positive obligations; the gray segment represents all other reported offices.

  1. MP-REGIONAL OFFICE18.9% · $14.6M · up $2.0M
  2. NATIONAL PARK SERVICE11.5% · $8.9M · up $8.9M
  3. WASHINGTON CONTRACTING OFFICE7.8% · $6.0M · up $1.1M
  4. ACQUISITION MANAGEMENT DIVISION6.6% · $5.1M · up $3.6M
  5. LOWER COLORADO REGIONAL OFFICE5.5% · $4.3M · up $1.7M
  6. All other reported offices49.7% of positive obligations
View reported office rankings, comparisons, and evidence

USAspending assigns each award to a funding office. That office may differ from the requiring activity, program office, contracting office, individual buyer, or actual customer.

  1. Reported funding office

    MP-REGIONAL OFFICE

    #1Up 1 from #2

    Latest 12 months

    $14.6M

    18.9% of positive obligations

    Versus preceding 12 months

    +$2.0M

    22 active prime contractors · 24 awards

    View office comparison and evidence

    Reported obligations increased 15.8% from $12.6M to $14.6M. The office’s share of positive obligations moved from 15.1% to 18.9%, a change of +3.8 percentage points.

    The latest period contains 43 actions across 24 awards and 5 newly active prime contractors. The preceding period contained 23 active prime contractors and 27 awards.

  2. Reported funding office

    NATIONAL PARK SERVICE

    #2New to the positive-obligation ranking

    Latest 12 months

    $8.9M

    11.5% of positive obligations

    Versus preceding 12 months

    +$8.9M

    3 active prime contractors · 3 awards

    View office comparison and evidence

    Reported obligations rose from $0 to $8.9M. The office’s share of positive obligations moved from 0% to 11.5%, a change of +11.5 percentage points.

    The latest period contains 3 actions across 3 awards and 3 newly active prime contractors. The preceding period contained 0 active prime contractors and 0 awards.

    Leading award-level changes

  3. Reported funding office

    WASHINGTON CONTRACTING OFFICE

    #3Rank unchanged

    Latest 12 months

    $6.0M

    7.8% of positive obligations

    Versus preceding 12 months

    +$1.1M

    18 active prime contractors · 40 awards

    View office comparison and evidence

    Reported obligations increased 23.6% from $4.8M to $6.0M. The office’s share of positive obligations moved from 5.8% to 7.8%, a change of +2.0 percentage points.

    The latest period contains 55 actions across 40 awards and 7 newly active prime contractors. The preceding period contained 21 active prime contractors and 40 awards.

  4. Reported funding office

    ACQUISITION MANAGEMENT DIVISION

    #4Up 11 from #15

    Latest 12 months

    $5.1M

    6.6% of positive obligations

    Versus preceding 12 months

    +$3.6M

    26 active prime contractors · 58 awards

    View office comparison and evidence

    Reported obligations increased 246.7% from $1.5M to $5.1M. The office’s share of positive obligations moved from 1.8% to 6.6%, a change of +4.8 percentage points.

    The latest period contains 86 actions across 58 awards and 10 newly active prime contractors. The preceding period contained 27 active prime contractors and 57 awards.

  5. Reported funding office

    LOWER COLORADO REGIONAL OFFICE

    #5Up 5 from #10

    Latest 12 months

    $4.3M

    5.5% of positive obligations

    Versus preceding 12 months

    +$1.7M

    13 active prime contractors · 19 awards

    View office comparison and evidence

    Reported obligations increased 64.0% from $2.6M to $4.3M. The office’s share of positive obligations moved from 3.1% to 5.5%, a change of +2.4 percentage points.

    The latest period contains 27 actions across 19 awards and 7 newly active prime contractors. The preceding period contained 8 active prime contractors and 11 awards.

  6. Reported funding office

    NATIONAL INTERAGENCY FIRE CENTER

    #6Up 6 from #12

    Latest 12 months

    $3.9M

    5.0% of positive obligations

    Versus preceding 12 months

    +$1.5M

    16 active prime contractors · 31 awards

    View office comparison and evidence

    Reported obligations increased 66.6% from $2.3M to $3.9M. The office’s share of positive obligations moved from 2.8% to 5.0%, a change of +2.2 percentage points.

    The latest period contains 35 actions across 31 awards and 6 newly active prime contractors. The preceding period contained 19 active prime contractors and 39 awards.

  7. Reported funding office

    UPPER COLORADO REGIONAL OFFICE

    #7Rank unchanged

    Latest 12 months

    $2.9M

    3.8% of positive obligations

    Versus preceding 12 months

    −$81K

    10 active prime contractors · 15 awards

    View office comparison and evidence

    Reported obligations decreased 2.7% from $3.0M to $2.9M. The office’s share of positive obligations moved from 3.6% to 3.8%, a change of +0.2 percentage points.

    The latest period contains 20 actions across 15 awards and 5 newly active prime contractors. The preceding period contained 7 active prime contractors and 14 awards.

  8. Reported funding office

    NEW MEXICO STATE OFFICE

    #8Up 3 from #11

    Latest 12 months

    $2.8M

    3.6% of positive obligations

    Versus preceding 12 months

    +$342K

    4 active prime contractors · 5 awards

    View office comparison and evidence

    Reported obligations increased 14.1% from $2.4M to $2.8M. The office’s share of positive obligations moved from 2.9% to 3.6%, a change of +0.7 percentage points.

    The latest period contains 6 actions across 5 awards. The preceding period contained 7 active prime contractors and 9 awards.

  9. Reported funding office

    CALIFORNIA STATE OFFICE

    #9Down 5 from #4

    Latest 12 months

    $2.2M

    2.9% of positive obligations

    Versus preceding 12 months

    −$1.6M

    16 active prime contractors · 19 awards

    View office comparison and evidence

    Reported obligations decreased 42.4% from $3.8M to $2.2M. The office’s share of positive obligations moved from 4.6% to 2.9%, a change of −1.7 percentage points.

    The latest period contains 24 actions across 19 awards and 6 newly active prime contractors. The preceding period contained 17 active prime contractors and 25 awards.

  10. Reported funding office

    ALBUQUERQUE AREA OFFICE

    #10Down 2 from #8

    Latest 12 months

    $2.1M

    2.8% of positive obligations

    Versus preceding 12 months

    −$635K

    5 active prime contractors · 9 awards

    View office comparison and evidence

    Reported obligations decreased 23.0% from $2.8M to $2.1M. The office’s share of positive obligations moved from 3.3% to 2.8%, a change of −0.5 percentage points.

    The latest period contains 15 actions across 9 awards. The preceding period contained 6 active prime contractors and 11 awards.

  11. Reported funding office

    NATIONAL OPERATIONS CENTER

    #14Down 13 from #1

    Latest 12 months

    $1.6M

    2.0% of positive obligations

    Versus preceding 12 months

    −$15.3M

    29 active prime contractors · 91 awards

    View office comparison and evidence

    Reported obligations decreased 90.6% from $16.9M to $1.6M. The office’s share of positive obligations moved from 20.2% to 2.0%, a change of −18.1 percentage points.

    The latest period contains 102 actions across 91 awards and 5 newly active prime contractors. The preceding period contained 43 active prime contractors and 163 awards.

    Leading award-level changes

  12. Reported funding office

    DSC CONTRACTING SERVICES DIVISION

    #18Down 12 from #6

    Latest 12 months

    $1.1M

    1.4% of positive obligations

    Versus preceding 12 months

    −$2.3M

    24 active prime contractors · 52 awards

    View office comparison and evidence

    Reported obligations decreased 67.0% from $3.4M to $1.1M. The office’s share of positive obligations moved from 4.1% to 1.4%, a change of −2.6 percentage points.

    The latest period contains 78 actions across 52 awards and 7 newly active prime contractors. The preceding period contained 28 active prime contractors and 60 awards.

  13. Reported funding office

    DOI, NPS CONOPS STRATEGIC

    #52Down 47 from #5

    Latest 12 months

    $122K

    0.16% of positive obligations

    Versus preceding 12 months

    −$3.3M

    3 active prime contractors · 4 awards

    View office comparison and evidence

    Reported obligations decreased 96.5% from $3.4M to $122K. The office’s share of positive obligations moved from 4.1% to 0.16%, a change of −3.9 percentage points.

    The latest period contains 6 actions across 4 awards and 2 newly active prime contractors. The preceding period contained 4 active prime contractors and 4 awards.

  14. Reported funding office

    ALAMOSA FIELD DIVISION

    No positive-obligation rank

    Latest 12 months

    $0

    0% of positive obligations

    Versus preceding 12 months

    −$1.8M

    0 active prime contractors · 0 awards

    View office comparison and evidence

    Reported obligations decreased 100.0% from $1.8M to $0. The office’s share of positive obligations moved from 2.1% to 0%, a change of −2.1 percentage points.

    The latest period contains 0 actions across 0 awards. The preceding period contained 1 active prime contractor and 1 award.

Contract types, competition, and procurement methods

From Oct 14, 2025 through Oct 13, 2026, 368 awards had positive obligations totaling $85.9M. Mafo was the leading reported procedure, accounting for 33.8% of positive obligations. Awards with a reported parent IDV accounted for 69.4%.

Leading award type
47.2%
Delivery Order
Leading reported procedure
33.8%
Mafo
Reported parent IDV
69.4%
of positive obligations had a reported parent IDV
Median reported offers
2
309 of 368 awards reported offers

Buying method changes

Compared with Oct 14, 2024–Oct 13, 2025. Based on 368 current awards and 488 preceding awards with positive net obligations.

Reported full-and-open obligation share
20.8%
Down from 59.9% in the preceding period
Median positive award obligations
$80K
Up from $50K in the preceding period
How to read these changes

Directional color and the Up or Down labels show historical movement only. Green does not mean favorable and red does not mean unfavorable; neither predicts a future procurement method.

Same-NAICS comparison

Compared with the NAICS 541620 peer median, parent-IDV obligation share is 15.9 percentage points lower, reported full-and-open obligation share is 10.1 percentage points lower, delivery-order obligation share is 21.1 percentage points lower, and median positive award obligations are 47.0% lower.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share69.4%85.3%-15.9 pts
Reported full-and-open obligation share20.8%30.8%-10.1 pts
Delivery-order obligation share47.2%68.4%-21.1 pts
Median positive award obligations$80K$151K-47.0%
Peer cohort and comparison limits

The peer median gives each of the 12 eligible agency markets equal weight. The included agency markets are:

Agency mission, scale, and acquisition context can differ. Peer position does not establish market attractiveness or predict a future procurement method.

View buying-method details and data coverage

Award types

Reported valueAwardsPositive obligationsShare
Delivery Order(C)142$40.6M47.2%
Purchase Order(B)142$23.6M27.5%
BPA Call(A)73$19.1M22.2%
Definitive Contract(D)11$2.6M3.0%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
FSS(C)91$27.3M31.8%
BPA(E)73$19.1M22.2%
IDC(B)51$13.3M15.5%
Not reported153$26.3M30.6%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Multiple Award(M)155$45.1M52.6%
Single Award(S)60$14.5M16.9%
Not reported153$26.3M30.6%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Mafo(SUBJECT TO MULTIPLE AWARD FAIR OPPORTUNITY)70$29.0M33.8%
Subject to Multiple Award Fair Opportunity(MAFO)89$16.9M19.7%
Sp1(SIMPLIFIED ACQUISITION)57$14.5M16.9%
Simplified Acquisition(SP1)99$14.1M16.4%
Np(NEGOTIATED PROPOSAL/QUOTE)14$4.6M5.3%
Negotiated Proposal/Quote(NP)15$3.4M4.0%
Other reported values24$3.3M3.9%

Extent competed

Reported valueAwardsPositive obligationsShare
A(FULL AND OPEN COMPETITION)77$31.1M36.2%
Full and Open Competition(A)91$17.8M20.8%
F(COMPETED UNDER SAP)46$14.0M16.3%
Competed Under SAP(F)79$12.5M14.6%
Full and Open Competition After Exclusion of Sources(D)13$2.5M2.9%
D(FULL AND OPEN COMPETITION AFTER EXCLUSION OF SOURCES)7$2.5M2.9%
Other reported values55$5.4M6.3%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Fair Opportunity Given(FAIR)93$32.5M37.9%
Competitive Set Aside(CSA)42$7.5M8.8%
Only One Source - Other(ONE)15$4.2M4.8%
Follow-on Action Following Competitive Initial Action(FOO)6$1.2M1.4%
Other Statutory Authority(OSA)3$544K0.63%
Not reported209$39.9M46.5%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)12$2.4M2.8%
Only One Source-Other (FAR 6.302-1 Other)(ONE)17$1.9M2.2%
SAP Non-Competition (FAR 13)(SP2)19$964K1.1%
Unique Source (FAR 6.302-1(B)(1))(UNQ)3$144K0.17%
Urgency (FAR 6.302-2)(URG)1$68K0.080%
Less Than or Equal to the Micro-Purchase Threshold(MPT)3$18K0.020%
Not reported313$80.5M93.7%

Contract pricing types

Reported valueAwardsPositive obligationsShare
Firm Fixed Price(J)190$31.7M36.9%
J(FIRM FIXED PRICE)137$29.0M33.8%
Y(TIME AND MATERIALS)9$18.4M21.5%
Time and Materials(Y)11$3.7M4.4%
Z(LABOR HOURS)4$1.8M2.1%
Labor Hours(Z)17$1.1M1.3%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Special Studies/Analysis- Environmental Assessments(B510)56$23.9M27.8%
Support- Professional: Other(R499)33$13.9M16.2%
Other Environmental Services(F999)54$12.8M14.9%
Special Studies/Analysis- Archeological/Paleontological(B503)27$5.3M6.2%
Environmental Systems Protection- Environmental Consulting and Legal Support(F115)18$4.6M5.3%
Special Studies/Analysis- Endangered Species: Plant/Animal(B509)11$3.8M4.4%
Other reported values169$21.6M25.2%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
Bureau of Reclamation(1425)66$26.8M31.2%
Bureau of Land Management(1422)92$19.7M23.0%
National Park Service(1443)71$13.6M15.8%
Departmental Offices(1406)16$10.5M12.2%
Bureau of Ocean Energy Management(1435)20$6.4M7.4%
U.S. Fish and Wildlife Service(1448)62$5.9M6.8%
Other reported values41$3.0M3.5%

Awarding offices

Reported valueAwardsPositive obligationsShare
Mp-Regional Office(140R20)20$14.8M17.2%
Ibc Acq Svcs Directorate (00004)(140D04)16$10.5M12.2%
Washington Contracting Office(140P21)25$6.7M7.8%
Acquisition Management Division(140M01)20$6.4M7.4%
Upper Colorado Regional Office(140R40)17$5.6M6.5%
National Operations Center(140L06)17$4.6M5.3%
Other reported values253$37.3M43.5%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
GS00F116CA(4732)4$5.8M6.8%
47QRAA18D002R(4732)2$4.7M5.5%
140L0623A0016(1422)7$3.9M4.6%
140L0618A0014(1422)2$2.7M3.1%
140M0123D0001(1435)8$2.5M2.9%
140L0621A0017(1422)7$2.0M2.4%
140P2125D0014(1443)3$2.0M2.4%
47QRAA18D00CR(4732)1$1.9M2.2%
Other reported values181$34.1M39.7%
Not reported153$26.3M30.6%

Offers, award size, and timing

Median reported offers
2 median
309 reported · 59 not reported
Positive award obligations
$80K median
$27K–$220K middle 50%
Reported performance period
463 days (~15 months) median
368 reported · 0 not reported

Calculations group latest-period actions by award, retain awards with positive net obligations for share denominators, and use each award's latest reported USAspending procurement fields as of Oct 13, 2026. Blank competition, pricing, PSC, or parent-IDV values remain not reported; they are not inferred. Offer counts must be positive and below the FPDS 999 placeholder. Awarding organizations can differ from the funding agency that defines this page.

Top federal contractors

Latest 12-month market share, concentration, and complete prime contractor rankings across the period shown.

Prime contractor concentration
46 of 220prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
8.3%of positive obligations in the last 12 months
Leading four prime contractors
29.7%of positive obligations in the last 12 months
Leading eight prime contractors
39.8%of positive obligations in the last 12 months

Based on $79.9M in positive obligations during the 12 months ending Oct 13, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Oct 14, 2024–Oct 13, 2025.

Last 12mo obligation volume: Highest positive obligations first; net deobligations follow by magnitude; contractors with no activity in the last 12 months follow by all-period obligations. Ranks use the complete contractor list and remain fixed when search narrows the results.

15 leading contractors
  1. #1

    Last 12mo obligations

    $6.6M

    8.3%

    Dollar movement

    −$314K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for DR REED & ASSOCIATES, INC
    Obligations: prior → latest
    $6.9M → $6.6M
    −4.5%
    Share: prior → latest
    7.7% → 8.3%
    +0.6 percentage points
    All-period obligations
    $13.5M
    2.5% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 23, 2025
    through Aug 27, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported00
    Reported small business11
    All-period set-aside types
    • 1 · WOSB set-aside
  2. #2

    Last 12mo obligations

    $6.5M

    8.2%

    Dollar movement

    +$4.3M

    vs. prior 12 months

    Last 12mo awards

    28 awards

    34 actions

    Historical and award details for ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLC
    Obligations: prior → latest
    $2.2M → $6.5M
    +198.3%
    Share: prior → latest
    2.4% → 8.2%
    +5.7 percentage points
    All-period obligations
    $54.9M
    10.1% of all-period positive obligations · 133 awards
    Recorded activity
    Since Oct 4, 2021
    through Sep 18, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside56
    Reported no set-aside00
    Not reported2340
    Reported small business2846
    All-period set-aside types
    • 24 · Total small business
  3. #3

    Last 12mo obligations

    $6.0M

    7.5%

    Dollar movement

    +$4.4M

    vs. prior 12 months

    Last 12mo awards

    24 awards

    35 actions

    Historical and award details for VANASSE HANGEN BRUSTLIN INC
    Obligations: prior → latest
    $1.5M → $6.0M
    +287.4%
    Share: prior → latest
    1.7% → 7.5%
    +5.8 percentage points
    All-period obligations
    $18.7M
    3.5% of all-period positive obligations · 48 awards
    Recorded activity
    Since Feb 14, 2022
    through Sep 25, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2416
    Reported small business00
    All-period set-aside types

    None reported.

  4. #4

    Last 12mo obligations

    $4.6M

    5.8%

    Dollar movement

    +$4.7M

    vs. prior 12 months

    Last 12mo awards

    7 awards

    8 actions

    Historical and award details for WSP USA SOLUTIONS INC
    Obligations: prior → latest
    −$138K → $4.6M
    Not comparable
    Share: prior → latest
    0% → 5.8%
    +5.8 percentage points
    All-period obligations
    $11.6M
    2.1% of all-period positive obligations · 37 awards
    Recorded activity
    Since Oct 27, 2021
    through Sep 25, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported717
    Reported small business00
    All-period set-aside types

    None reported.

  5. #5

    Last 12mo obligations

    $2.2M

    2.8%

    Dollar movement

    −$155K

    vs. prior 12 months

    Last 12mo awards

    7 awards

    7 actions

    Historical and award details for AIR RESOURCE SPECIALISTS, INC
    Obligations: prior → latest
    $2.4M → $2.2M
    −6.5%
    Share: prior → latest
    2.7% → 2.8%
    +0.1 percentage points
    All-period obligations
    $14.8M
    2.7% of all-period positive obligations · 37 awards
    Recorded activity
    Since Nov 9, 2021
    through Sep 10, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported76
    Reported small business76
    All-period set-aside types
    • 6 · Total small business
  6. #6

    Last 12mo obligations

    $2.2M

    2.7%

    Dollar movement

    +$634K

    vs. prior 12 months

    Last 12mo awards

    20 awards

    25 actions

    Historical and award details for SUNDANCE CONSULTANTS, LLC
    Obligations: prior → latest
    $1.5M → $2.2M
    +41.7%
    Share: prior → latest
    1.7% → 2.7%
    +1.0 percentage points
    All-period obligations
    $7.9M
    1.4% of all-period positive obligations · 54 awards
    Recorded activity
    Since Dec 30, 2021
    through Sep 14, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside36
    Reported no set-aside00
    Not reported1711
    Reported small business49
    All-period set-aside types
    • 13 · Total small business
    • 2 · Indian small business
    • 1 · 8(a) sole source
    • +1 more types
  7. #7

    Last 12mo obligations

    $1.9M

    2.4%

    Dollar movement

    +$1.7M

    vs. prior 12 months

    Last 12mo awards

    4 awards

    4 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $206K → $1.9M
    +813.1%
    Share: prior → latest
    0.23% → 2.4%
    +2.1 percentage points
    All-period obligations
    $3.3M
    0.60% of all-period positive obligations · 12 awards
    Recorded activity
    Since Oct 28, 2021
    through Sep 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported42
    Reported small business00
    All-period set-aside types

    None reported.

  8. #8

    Last 12mo obligations

    $1.8M

    2.3%

    Dollar movement

    +$713K

    vs. prior 12 months

    Last 12mo awards

    15 awards

    20 actions

    Historical and award details for BLUE WORLD RESEARCH INSTITUTE INC
    Obligations: prior → latest
    $1.1M → $1.8M
    +62.9%
    Share: prior → latest
    1.3% → 2.3%
    +1.1 percentage points
    All-period obligations
    $12.4M
    2.3% of all-period positive obligations · 36 awards
    Recorded activity
    Since Oct 4, 2021
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported1518
    Reported small business00
    All-period set-aside types

    None reported.

  9. #9

    Last 12mo obligations

    $1.7M

    2.1%

    Dollar movement

    −$1.7M

    vs. prior 12 months

    Last 12mo awards

    5 awards

    11 actions

    Historical and award details for EASTERN RESEARCH GROUP INC
    Obligations: prior → latest
    $3.4M → $1.7M
    −50.3%
    Share: prior → latest
    3.8% → 2.1%
    −1.7 percentage points
    All-period obligations
    $9.9M
    1.8% of all-period positive obligations · 27 awards
    Recorded activity
    Since Dec 11, 2021
    through Aug 31, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside12
    Not reported47
    Reported small business00
    All-period set-aside types

    None reported.

  10. #10

    Last 12mo obligations

    $1.6M

    2.0%

    Dollar movement

    +$1.3M

    vs. prior 12 months

    Last 12mo awards

    4 awards

    4 actions

    Historical and award details for NEW SOUTH ASSOCIATES, INC.
    Obligations: prior → latest
    $329K → $1.6M
    +399.1%
    Share: prior → latest
    0.37% → 2.0%
    +1.7 percentage points
    All-period obligations
    $2.8M
    0.51% of all-period positive obligations · 15 awards
    Recorded activity
    Since Nov 9, 2021
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside22
    Reported no set-aside00
    Not reported22
    Reported small business44
    All-period set-aside types
    • 3 · Total small business
  11. #11

    Last 12mo obligations

    $1.6M

    2.0%

    Dollar movement

    +$294K

    vs. prior 12 months

    Last 12mo awards

    13 awards

    20 actions

    Historical and award details for SWCA, INCORPORATED
    Obligations: prior → latest
    $1.3M → $1.6M
    +21.9%
    Share: prior → latest
    1.5% → 2.0%
    +0.6 percentage points
    All-period obligations
    $19.4M
    3.6% of all-period positive obligations · 57 awards
    Recorded activity
    Since Oct 20, 2021
    through Sep 25, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside32
    Not reported1021
    Reported small business00
    All-period set-aside types

    None reported.

  12. #12

    Last 12mo obligations

    $1.5M

    1.9%

    Dollar movement

    +$1.5M

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for ONEIDA-STANTEC JV LLC
    Obligations: prior → latest
    $0 → $1.5M
    Not comparable
    Share: prior → latest
    0% → 1.9%
    +1.9 percentage points
    All-period obligations
    $1.5M
    0.28% of all-period positive obligations · 1 award
    Recorded activity
    Since May 7, 2026
    through May 7, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  13. #13

    Last 12mo obligations

    $1.5M

    1.9%

    Dollar movement

    +$297K

    vs. prior 12 months

    Last 12mo awards

    4 awards

    7 actions

    Historical and award details for ASIR LLC
    Obligations: prior → latest
    $1.2M → $1.5M
    +24.9%
    Share: prior → latest
    1.3% → 1.9%
    +0.5 percentage points
    All-period obligations
    $6.0M
    1.1% of all-period positive obligations · 7 awards
    Recorded activity
    Since Oct 27, 2021
    through Sep 11, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside33
    Reported no set-aside00
    Not reported11
    Reported small business44
    All-period set-aside types
    • 5 · Total small business
  14. #14

    Last 12mo obligations

    $1.4M

    1.8%

    Dollar movement

    +$2.2M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    3 actions

    Historical and award details for SEQUOIA ECOLOGICAL CONSULTING, INC.
    Obligations: prior → latest
    −$805K → $1.4M
    Not comparable
    Share: prior → latest
    0% → 1.8%
    +1.8 percentage points
    All-period obligations
    $610K
    0.11% of all-period positive obligations · 2 awards
    Recorded activity
    Since Nov 15, 2021
    through Aug 14, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside22
    Reported no set-aside00
    Not reported00
    Reported small business22
    All-period set-aside types
    • 2 · WOSB set-aside
  15. #15

    Last 12mo obligations

    $1.3M

    1.7%

    Dollar movement

    +$899K

    vs. prior 12 months

    Last 12mo awards

    3 awards

    4 actions

    Historical and award details for BIO-WEST INC
    Obligations: prior → latest
    $449K → $1.3M
    +200.3%
    Share: prior → latest
    0.50% → 1.7%
    +1.2 percentage points
    All-period obligations
    $3.6M
    0.67% of all-period positive obligations · 14 awards
    Recorded activity
    Since Oct 28, 2021
    through Sep 14, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported24
    Reported small business35
    All-period set-aside types
    • 2 · Total small business

Recent federal contract award activity

Recent contract actions with unusually large obligation changes or meaningful shifts in contractor and funding-office activity.

Modification

This action

+$6.6M

DR REED & ASSOCIATES, INC

MP-REGIONAL OFFICE

EO 14398 TO ADD FAR 52.222-90, ADD IN-SCOPE WORK, FUNDING, EQUIPMENT & EXTEND POP BY 6 MONTHS - CONTINUOUS FLOW AND WATER QUALITY MONITORING NETWORK IN THE SACRAMENTO-SAN JOAQUIN DELTA AND SUISUN BAY

Why it stands out

The award grew alongside stronger office-attributed spending.

The modification added $6.6M while office-attributed obligations rose $2.0M overall.

Award net obligations
$13.5M
Share of 12-month positive obligations
8.3%
Supporting data
Prime contractor
#1 · 8.3% share
$314K net decline despite this positive action
Funding office
#1 · 18.9% attributed share
up 1 rank · +3.8 percentage points · $2.0M net increase; action exceeded it by $4.6M
PIID 140R2025P0072 · Mod P00001
Base award

This action

+$4.4M

WSP USA SOLUTIONS INC

NATIONAL PARK SERVICE

EO 14398 CONTRACTOR SUPPORT FOR PRE-NEPA, NEPA AND RELATED ENVIRONMENTAL REVIEW TASKS.

Why it stands out

One action represented 5.5% of the market’s latest 12-month positive obligations.

At $4.4M, the action was large enough to materially affect the latest 12-month market picture.

Award net obligations
$4.4M
Share of 12-month positive obligations
5.5%
Supporting data
Prime contractor
#4 · 5.8% share
+5.8 percentage points · $4.7M net increase; action accounted for 93.5%
Funding office
#2 · 11.5% attributed share
+11.5 percentage points · $8.9M net increase; action accounted for 49.8%
PIID 140D0426F1192
Modification

This action

+$2.4M

ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLC

LOWER COLORADO REGIONAL OFFICE

EIS - POST-2026 LOWER COLORADO RIVER RESERVOIR OPERATIONAL STRATEGIES FOR LAKE POWELL AND LAKE MEAD - ADD WORK

Why it stands out

The contractor climbed 9 positions in this market.

It now ranks #2 by positive obligations over the latest 12 months.

Award net obligations
$14.4M
Share of 12-month positive obligations
3.0%
Supporting data
Prime contractor
#2 · 8.2% share
up 9 ranks · +5.7 percentage points · $4.3M net increase; action accounted for 55.1%
Funding office
#5 · 5.5% attributed share
up 5 ranks · +2.4 percentage points · $1.7M net increase; action exceeded it by $723K
PIID 140R3023F0037 · Mod P00005
Base award

This action

+$4.4M

VANASSE HANGEN BRUSTLIN INC

NATIONAL PARK SERVICE

EO 14398 CONTRACTOR SUPPORT FOR PRE-NEPA, NEPA AND RELATED ENVIRONMENTAL REVIEW TASKS

Why it stands out

The contractor climbed 12 positions in this market.

It now ranks #3 by positive obligations over the latest 12 months.

Award net obligations
$4.4M
Share of 12-month positive obligations
5.5%
Supporting data
Prime contractor
#3 · 7.5% share
up 12 ranks · +5.8 percentage points · $4.4M net increase; action accounted for 99.5%
Related:Largest share gain
PIID 140D0426F1193
Deobligation

This action

−$1.8M

COPPERHEAD ENVIRONMENTAL CONSULTING INC

NATIONAL OPERATIONS CENTER

MOD TO DEOBLIGATE FUNDING AND CANCEL CLINS 00020 AND 00030 DUE TO DOI RULEMAKING PRIORITIES. REPURPOSE THE REMAINDER OF CLIN 00010 TO CLIN 00040.

Why it stands out

This award recorded a material contraction.

The action removed $1.8M. A deobligation does not by itself show lower requirement demand.

Award net obligations
$1.9M
Share of 12-month positive obligations
2.3%
Supporting data
Prime contractor
#112 · 0.11% share
down 110 ranks · −6.8 percentage points · $6.2M net decline; action accounted for 29.8%
Funding office
#14 · 2.0% attributed share
down 13 ranks · −18.1 percentage points · $15.3M net decline; action accounted for 12.0%
Related:Funding office declineLargest share loss
PIID 140L0625F0163 · Mod P00001
Modification

This action

+$1.1M

SEQUOIA ECOLOGICAL CONSULTING, INC.

MP-REGIONAL OFFICE

EXERCISE OPTION YEAR 1

Why it stands out

The award grew alongside stronger contractor activity.

The modification added $1.1M while contractor obligations rose $2.2M overall.

Award net obligations
$3.2M
Share of 12-month positive obligations
1.4%
Supporting data
Prime contractor
#14 · 1.8% share
+1.8 percentage points · $2.2M net increase; action accounted for 48.8%
PIID 140R2025P0067 · Mod P00002
View recent award activity by date (10)
  1. WSP USA SOLUTIONS INCBase award · PIID 140D0426F1192
    Action+$4.4M
    Award net obligations$4.4M
  2. VANASSE HANGEN BRUSTLIN INCBase award · PIID 140D0426F1193
    Action+$4.4M
    Award net obligations$4.4M
  3. WOODS CANYON ARCHAEOLOGICAL CONSULTANTS, INC.Modification · PIID 140P2026F0123
    Action+$150K
    Award net obligations$492K
  4. WSP USA ENVIRONMENT & INFRASTRUCTURE INC.Base award · PIID 140P4526F0028
    Action+$148K
    Award net obligations$148K
  5. WILLIAM W WALKER JRBase award · PIID 140P5426C0029
    Action+$145K
    Award net obligations$145K
  6. ERO RESOURCES CORPORATIONBase award · PIID 140FS226F0158
    Action+$34K
    Award net obligations$34K
  7. MABBETT & ASSOCIATES, INC.Base award · PIID 140FS326P0294
    Action+$27K
    Award net obligations$27K
  8. AARCHER, INC.Deobligation · PIID 140L0624F0184
    Action−$4K
    Award net obligations$40K
  9. SWCA, INCORPORATEDDeobligation · PIID 140L0624F0163
    Action>−$1
    Award net obligations$532K
  10. SHUNDIIN SHINE LIGHTING AND ELECTRICAL SUPPLIES, LLCModification · PIID 140A0926P0072
    Action+$747K
    Award net obligations$811K

DOI environmental consulting market FAQs

Answers based on reported federal contract data.

Who are the top DOI environmental consulting contractors?

In the 12 months through October 13, 2026, DR REED & ASSOCIATES, INC, ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLC, and VANASSE HANGEN BRUSTLIN INC were the leading DOI environmental consulting prime contractors by positive obligations.

  1. #1

    DR REED & ASSOCIATES, INC

    $6,597,862 in positive obligations

  2. #2

    ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLC

    $6,533,756 in positive obligations

  3. #3

    VANASSE HANGEN BRUSTLIN INC

    $5,995,662 in positive obligations

Rankings use reported USAspending award data.

Did DOI contract obligations decrease in the environmental consulting market?

Yes. Measured by net prime contract obligations, reported DOI activity in the environmental consulting market decreased 7.6% from $81,499,896 in the preceding 12 months to $75,332,667 in the 12 months through October 13, 2026.

Latest 12 months
$75,332,667
Net prime contract obligations
Preceding 12 months
$81,499,896
Net prime contract obligations
Change
−7.6%
Between matched 12-month periods

Reported contract actions, not outlays or a forecast.

What recent DOI contract award activity was reported in the environmental consulting market?

Recent DOI contract award activity reported in the environmental consulting market included actions for DR REED & ASSOCIATES, INC, WSP USA SOLUTIONS INC, and ENVIRONMENTAL MANAGEMENT & PLANNING SOLUTIONS LLC during the 12 months through October 13, 2026.

Action obligations are transaction-level amounts, not current award-level obligations.

Which procurement methods were reported for DOI contracts under NAICS 541620?

From October 14, 2025 through October 13, 2026, DOI reported 368 positive-obligation awards for environmental consulting under NAICS 541620. The leading award type was delivery order. The leading reported procedure was mafo.

Positive-obligation awards
368
Leading reported procedure
Mafo
33.8% of positive obligations
Leading award type
Delivery Order
47.2% of positive obligations
Full and open
20.8%
of positive obligations
Reported parent IDV
69.4%
of positive obligations

Percentages use positive obligations as the denominator.

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Related market research

Complete market indexes:

Same NAICS at other agencies:

Nearby NAICS at this agency:

Markets sharing leading prime records:

Leading-prime vehicle memberships:

Company memberships do not establish award-channel use.

Reported obligations include contract actions from October 1, 2021 through October 13, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology