CH2M HILL, INC

THE PURPOSE OF THIS MODIFICATION IS TO RE-OBLIGATE FUNDING.

THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE FUNDING FOR A RE-OBLIGATION.

TEN MILE DRAIN SUPERFUND SITE: RAF, DES, CLIN 002, RD SUPPORT TO THE PURPOSE OF MODIFICATION P00007: 1) DEOBLIGATE REMAINING FUNDS (-$473,711.76) ASSIGNED TO TASK ORDER 68HE0522F0120 2) COMPLETE TASK ORDER CLOSEOUT PER FAR 4.804-1.

R10 DES: BUNKER HILL RD, O/S AND TECHNICAL ASSISTANCE SUPPORT MOD P00014: CHANGE ORDER TO INCREASE CEILING FOR ADDITIONAL CAP DESIGN LEVEL OF EFFORT BASED ON SAMPLE RESULTS COLLECTED

THE PURPOSE OF THIS PR IS TO DEOBLIGATE $131,536.68 FROM CH2M HILLS CONTRACT DTFT6014D00023, TASK ORDER 0003. THIS REQUEST WAS MADE BY THE CLOSEOUT TEAM. ALL SUPPORTING DOCUMENTS ARE ATTACHED.

THE PURPOSE OF THIS MODIFICATION IS TO DEOBLIGATE $523,406.84 FROM TASK ORDER 2 OF THE CH2M HILL CONTRACT, CONTRACT NO. DTFT6014D00023L. THIS REQUEST WAS MADE BY THE CLOSEOUT TEAM. ALL SUPPORTING DOCUMENTS ARE ATTACHED.

THE PURPOSE OF THIS PR IS TO DEOBLIGATE $134,534.16 FROM CH2M HILL INC.

GREAT LAKES ARCHITECT AND ENGINEERING SERVICES (GLAES) II TASK ORDER - CRAWFORD CREEK FEASIBILITY STUDY SUPPORT MODIFICATION P00003

OLD AMERICAN ZINC PLANT SF SITE - : RAF,DES,CLIN 0002, RD TASK ORDER (TO) THE PURPOSE OF MODIFICATION P00009: 1) DEOBLIGATE REMAINING FUNDS (-$258,110.99) ON TO-68HE0521F0068. 2) COMPLETE TO CLOSEOUT PER FAR 4.804-1.

GLAES II - REMEDIAL DESIGN FINALIZATION SUPPORT FOR THE UPPER TRENTON CHANNEL GLLA PROJECT MODIFICATION P00006

THE PURPOSE OF THIS MODIFICATION IS TO ADD INCREMENTAL FUNDING AND REALIGN THE BUDGET.

THE PURPOSE OF THIS MODIFICATION IS TO INCREASE THE LEVEL OF EFFORT FOR TASKS 1.3.2.1, 1.3.2.2, AND 6.5 AND ADD FUNDING TO LINE ITEMS DE-OBLIGATED IN MOD 15.

RAF DES NEW TASK ORDER FOR IRON KING MINE-HUMBOLDT SMELTER REMEDIAL DESIGN/REMEDIAL ACTION SUPPORT

REMEDIAL ACTION (RA) VELSICOL BURN PIT SITE OBLIGATE FUNDS ON CLIN 0005

THE PURPOSE OF THIS MODIFICATION IS ADD FUNDING FOR THE FIXED FEE THAT DID NOT GET ROLLED OVER FROM MOD 12.

THE PURPOSE OF THIS MODIFICATION TO ADD FUNDING CLIN 0001

THIS TASK ORDER IS TO REQUEST PROPOSAL TO CONDUCT A FEASIBILITY STUDY (FS), AND TO PRODUCE A PROPOSED PLAN (PP) AND A CONCEPTUAL SITE MODEL (CSM) AT THE SAN GABRIEL VALLEY AREA SUPERFUND SITE IN ALHAMBRA, CA.

THE PRIMARY OBJECTIVE OF THIS TASK ORDER IS TO PROVIDE ENGINEERING AND STRATEGY DEVELOPMENT SUPPORT TO EVALUATE SOIL AND GROUNDWATER REMEDY SELECTION, DESIGN, AND IMPLEMENTATION.

MOD 03: INCORPORATE A SOWA AND ADDITIONAL FUNDING

THE PURPOSE OF THIS MODIFICATION IS TO EXERCISE OPTION PERIOD 3.

RAF DES NEW TASK ORDER FOR THE MONTROSE/DEL AMO MULTI-SITE. THE PURPOSE OF THIS TO ADD FUNDING FOR CLIN 2.

REMEDIAL ACTION (RA) VELSICOL BURN PIT SITE DEOBLIGATES EXCESS CLIN 0008.2 FUNDS AND CONDITIONALLY APPROVES RFI 006.

RAF DES TASK ORDER FOR REMEDIAL DESIGN AND REMEDIAL ACTION SUPPORT SULPHUR BANK MERCURY MINE OU1 MODIFICATION IS TO ADD FUNDING.

IH REMEDIAL INVESTIGATIONS FOR SITE 66, SITE 77, AND SWMU 14

THE PURPOSE OF THIS MODIFICATION IS TO PROVIDE A SCOPE GROWTH FOR CTO N4008524F4419.

RESOURCE CONSERVATION AND RECOVERY ACT TECHNICAL SUPPORT AT MCAS BEAUFORT

EV 33 (NWS) SITE 31 ENVIRONMENTAL INVESTIGATIONS SCOPE GROWTH

P00001 WNY BASEWIDE INVESTIGATIONS PROJECT MANAGEMENT, SITE 21 PRE-DESIGN INVESTIGATION, 2026 FIVE-YEAR REVIEW, SITE 24 PRE-FS SAMPLING AND VIMS

PHASE I ENVIRONMENTAL SITE ASSESSMENT FOR 1ST MARINE CORPS DISTRICT GARDEN CITY, NY

FY25 NAVSTA GREAT LAKES SPCC PLAN UPDATE

INSTALLATION OF ONE POU TREATMENT SYSTEM AND ONE POET SYSTEM FOR OFF-BASE DRINKING WATER ASSOCIATED WITH MCALF BOGUE.

P750 SITE SUBSURFACE SOIL INVESTIGATION, SCOTT CENTER ANNEX

THE PURPOSE OF THIS MODIFICATION IS FOR CONTINUOUS BASEWIDE SUPPORT, NAVAL AUXILIARY FIELD FENTRESS OCEANA, CHESAPEAKE VIRGINIA

A FOLLOW-ON SITE INSPECTION (SI) ADDENDUM TO ADDRESS POTENTIAL PAST USE OF MUNITIONS AND EXPLOSIVES OF CONCERN (MEC) FOR UNEXPLODED ORDINANCE SITE (UXO) 2 AT NAVAL AIR STATION (NAS) KEY WEST, FLORIDA.

SAES DATED 14 MAY 2025

QUANTICO 5TH YEAR REVIEW SMP AND PARTNERING SUPPORT

RAF DES NEW TASK ORDER FOR THE MONTROSE/DEL AMO MULTI-SITE. THE PURPOSE OF THIS MODIFICATION IS TO EXERCISE OPTION PERIOD 4, CHANGE PO/INVOICE APPROVER, AND REVISE FAR CLAUSE 52.217-9.

PROGRAM MANAGEMENT OFFICE (PMO) FUNCTIONS.

RAF DES TASK ORDER FOR LIBBY GROUNDWATER CONTAMINATION SF SITE, SSID: 0820. OVERSIGHT OF PRP REMEDIAL DESIGN (RD), REMEDIAL ACTION (RA), AND OPERATION & MAINTENANCE (O&M).

SPCC ODCP 5YR PLAN UPDATE NWS YORKTOWN CHEATHAM ANNEX

EV34, CHERRY POINT, SITES 29, 102, AND 103 (MCOLF BOGUE), PFAS RIS

NASO, UXO 1 EXPANDED SI, SCOPE GROWTH

R10 DES: QUENDALL TERMINAL SUPERFUND SITE RD/RA OVERSIGHT SERVICES MOD P00011: ADD INCREMENTAL FUNDING FOR SEVERABLE SERVICES TASKS

MATTHIESSEN & HEGELER ZINC CO, RD TASK ORDER, GLAES II THE PURPOSE OF MODIFICATION P00010: 1) DEOBLIGATE REMAINING FUNDS (-$75,962.46) ASSIGNED TO TASK ORDER 68HE0521F0113. 2) COMPLETE TASK ORDER CLOSEOUT PER FAR 4.804-1

MOD 02: EXERCISE BASE OPTIONAL TASKS.

THE PURPOSE OF THIS MODIFICATION IS TO SUPPORT SCOPE GROWTH

R10 DES: REMEDIAL DESIGN (RD) FOR WYCKOFF/EAGLE HARBOR SUPERFUND SITE. MOD P0017: INCREMENTAL FUNDING, CHANGE ORDER/FUNDING, AND TOCOR/ATOCOR CHANGES

SPCC TECHNICAL AMENDMENTS AND STMS IMPLEMENTATION AT NAVSTA NORFOLK.

DES TASK ORDER, CASMALIA RESOURCES SUPERFUND SITE - THE PURPOSE OF THIS MODIFICATION IT SO EXERCISE AND FUND OPTION YEAR 1 AN UPDATED CLAUSE 52.217-9.

INSTALL JP8 CROSSOVER PIPE