68HE0923D0002↗

Name: 68HE0923D0002: The Purpose of This Idiq Contract Is to Provide Technical Assessment Services for the Abandoned Uranium Mines on and Around the Navajo Nation for Regions 6 & 9.
Creator: SpendQuery
License: https://creativecommons.org/licenses/by/4.0/

Tetra Tech, Inc. received this contract vehicle from Region 9 Contracting Office, Environmental Protection Agency: $0 obligated so far for special studies/analysis- environmental assessments. It runs to 2028-04-09.

Key facts · data as of Oct 25, 2026

Recipient: Tetra Tech, Inc.
Awarding agency: Environmental Protection Agency
Contracting office: Region 9 Contracting Office (68HE09)
Obligated to date: $0
Potential value: $98.00M
Ends: 2028-04-09

Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 25, 2026.

Cite this page: SpendQuery, Award 68HE0923D0002, data as of Oct 25, 2026, https://spendquery.com/award?id=CONT_IDV_68HE0923D0002_6800

Tetra Tech, Inc.: all federal awards · Environmental Protection Agency: spending · Region 9 Contracting Office: what it buys · The follow-on: recompete brief

THE PURPOSE OF THIS IDIQ CONTRACT IS TO PROVIDE TECHNICAL ASSESSMENT SERVICES FOR THE ABANDONED URANIUM MINES ON AND AROUND THE NAVAJO NATION FOR REGIONS 6 & 9.

Idc · Environmental Protection Agency · to Tetra Tech, Inc. (UEI J8CNBANBZ6U8) · data as of 2026-10-25

Obligated to date$09 actions

Potential value$98.00Mif every option is used

Period2023-04-07 → 2028-04-09current end date

Up for re-bid: ends 2028-04-09. Recompete brief →

What it is

Product or service: Special Studies/Analysis- Environmental Assessments (PSC B510)
Industry: Environmental Consulting Services (NAICS 541620)
Contracting office: Region 9 Contracting Office (68HE09)
Competition: Full and open competition · 2 offers received
Pricing: Time and materials
How it was bought: Contract vehicle (IDV) itself
Solicitation: 68HE0921R0006

Obligations by fiscal year

FY2023$0

FY2024$0

FY2025$0

FY2026$0

SpendQuery holds FY2023 on; earlier years are on USAspending.gov.

Subcontractors: where the money went next

No subawards reported for this award. Primes report subawards of $30,000 or more; many awards have none.

Orders under this vehicle

30 orders worth $78.75M (current value). The largest:

68HE0923F0051 · $20.27M · ends 2027-11-30
68HE0923F0071 · $13.50M · ends 2028-03-01
68HE0923F0074 · $10.66M · ends 2027-09-30
68HE0923F0072 · $6.55M · ends 2026-12-31
68HE0923F0041 · $4.67M · ends 2028-04-10
68HE0923F0073 · $3.69M · ends 2027-01-01
68HE0924F0004 · $3.39M · ends 2026-12-31
68HE0923F0045 · $1.79M · ends 2028-03-31
68HE0923F0049 · $1.60M · ends 2027-07-12
68HE0924F0017 · $1.59M · ends 2028-04-09
68HE0923F0042 · $1.43M · ends 2028-04-09
68HE0925F0048 · $1.33M · ends 2027-05-01
68HE0923F0070 · $1.10M · ends 2027-09-30
68HE0925F0051 · $1.06M · ends 2027-08-04
68HE0923F0066 · $789.5K · ends 2027-08-09
68HE0923F0044 · $787.1K · ends 2028-04-09
68HE0924F0055 · $764.2K · ends 2027-09-30
68HE0923F0069 · $582.4K · ends 2027-08-14
68HE0923F0048 · $439.8K · ends 2028-06-06
68HE0923F0077 · $428.9K · ends 2028-04-30
68HE0924F0051 · $385.7K · ends 2028-04-09
68HE0925F0054 · $359.1K · ends 2027-06-30
68HE0923F0078 · $287.7K · ends 2028-04-09
68HE0923F0068 · $266.1K · ends 2027-08-10
68HE0923F0067 · $265.6K · ends 2027-08-09

Every action

9 actions since 2023-04-07. Each is a modification or amendment with the money it added or took back.

Date	Modification	Kind	Amount	What the agency wrote
2026-05-14	P00009	Supplemental agreement (work within scope)	$0	P00009 RAES 2 - INCREASE CEILING AMOUNT AND INCORPORATE A CLAUSE- NAVAJO NATION AUM RESPONSE ASSESSMENT AND EVALUATION SERVICES (RAES) II FOR EPA FOR REGIONS 6 & 9.
2025-06-06	P00008	Administrative change	$0	THIS UNILATERAL MODIFICATION WILL CHANGE THE CO, CS, ALT CO, ADD REVISED QMP/QAAP, AND CHANGE FAR CLAUSES PER USEPA INTERIM POLICY NOTICE 25-02 IN THE RAES 2 CONTRACT.
2024-09-23	P00007	Administrative change	$0	THIS UNILATERAL MODIFICATION WILL RETROACTIVELY INTEGRATE THE SERVICES CONTRACT ACT CLAUSES AND EXECUTIVE ORDERS 13706 AND 14026 INTO THE RAES 2 CONTRACT.
2024-02-29	P00005	Change order	$0	THIS UNILATERAL MODIFICATION REVISES THE MOBILIZATION POINTS FOR TASK ORDERS. THIS IS MOD P00005 FOR THE RAES 2 CONTRACT.
2023-06-22	P00004	Administrative change	$0	THIS UNILATERAL MODIFICATION INCORPORATES THE CONTRACTOR'S FINAL AND APPROVED QUALITY MANAGEMENT PLAN (QMP) INTO THIS CONTRACT. MOD P00004. THIS CONTRACT IS TO PROVIDE TECHNICAL ASSESSMENT SERVICES FOR THE ABANDONED URANIUM MINES ON AND AROUND
2023-06-20	P00003	Supplemental agreement (work within scope)	$0	ADDED PRICING FOR LABOR CATEGORY PROJECT MANAGER III. THIS CONTRACT IS TO PROVIDE TECHNICAL ASSESSMENT SERVICES FOR THE ABANDONED URANIUM MINES ON AND AROUND THE NAVAJO NATION FOR REGIONS 6 & 9.
2023-06-01	P00002	Administrative change	$0	MOD P00002 UPDATES AND MAKES CHANGES TO CLAUSES AS NEEDED. THIS CONTRACT IS TO PROVIDE TECHNICAL ASSESSMENT SERVICES FOR THE ABANDONED URANIUM MINES ON AND AROUND THE NAVAJO NATION FOR REGIONS 6 & 9.
2023-05-25	P00001	Funding only	-$100.0K	MOD P00001 WILL DE-OBLIGATE $100K FROM THIS CONTRACT. THIS CONTRACT IS TO PROVIDE TECHNICAL ASSESSMENT SERVICES FOR THE ABANDONED URANIUM MINES ON AND AROUND THE NAVAJO NATION FOR REGIONS 6 & 9.
2023-04-07	0		$100.0K	THE PURPOSE OF THIS IDIQ CONTRACT IS TO PROVIDE TECHNICAL ASSESSMENT SERVICES FOR THE ABANDONED URANIUM MINES ON AND AROUND THE NAVAJO NATION FOR REGIONS 6 & 9.

Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-25). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗