ENVIRONMENTAL CHEMICAL CORPORATION

EXERCISE OPTIONAL CLINS 11 & 12

EXERCISE CLINS 2003, 2004 AND 2006

THE PURPOSE OF THIS MODIFICATION IS AS FOLLOWS: A. TO EXERCISE AND FUND CLIN 0003 IN THE AMOUNT OF $59,146.00 UTILIZING PR 001234184 WITH A OF POP 29 AUG 2025 TO 28 AUG 2026.B. ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED.

EXERCISE AND FUND OPTIONAL CLIN 1006

THE PURPOSE OF THIS MODIFICATION IS AS FOLLOWS: A. TO FUND AND EXERCISE OPTIONAL TASK CLINS 2004, 3000, 3001, 3002, AND 3003.B. TERMS AND CONDITIONS REMAIN UNCHANGED.

ENVIROMENTAL REMEDIATION

PCS 34 / 35 / 36 / 37 / 40 / 41 / 42 / 43 / 45 / 46 / 47 / 48 / 49 / 50 / 51 / 53 / 55

THE PURPOSE OF THIS MODIFICATION IS AS FOLLOWS: A. TO EXERCISE OPTIONAL TASK CLINS 2002, 2003 AND 2005 UTILIZING PR 12326168 IN THE AMOUNT OF $50,622.00.B. ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED

MOD TO DE-OB REMAINING FUNDS FOR CLOSEOUT

DLA-E UNITED KINGDOM RECURRING MAINTENANCE AND MINOR REPAIR (RMMR) - EXERCISE OPTION YEAR 1

ENVIRONMENTAL RESTORATION

MINIMUM GUARANTEE DEOB

PERFORMANCE WORK STATEMENT (PWS) CARETAKER SERVICESLONE STAR ARMY AMMUNITION PLANTPART 1 GENERAL INFORMATIONUPDATED 6 JANUARY 20251. GENERAL: THIS IS A NON-PERSONNEL SERVICES CONTRACT TO PROVIDE CARETAKER SERVICES AT THE LONE STAR ARMY AMMU

REMEDIAL FACILITY INVESTIGATION (RFI) ACTIVITIES AT AREA OF CONCERN S (AOC-S) - VETERANS AFFAIRS NATIONAL CEMETERY DUDDED SITE FTJA-0011-R-01, FORT JACKSON, COLUMBIA, SOUTH CAROLINA

THE CONTRACT ACTION IS ESSENTIAL TO ENSURE INCORPORATION OF CO #001 TO PROVIDE FIRE ALARM DEVICES. WITHOUT THIS CHANGE, THE PROJECT WILL NOT BE COMPLETE, USEABLE, AND NOT IN COMPLIANCE.

THE WORK TO BE PERFORMED WILL BE IN ACCORDANCE WITH THE NORTHEAST REGION INDEFINITE DELIVERY/INDEFINITE QUANTITY (IDIQ) PERFORMANCE WORK STATEMENT (PWS) BASE REALIGNMENT AND CLOSURE (BRAC)

EXERCISING CLINS 3002 AND 3004

DEVELOPMENT AND IMPLEMENTATION FOR GROUNDWATER ASSESSMENT PLAN (GAP) AT THE SOLID WASTE MANAGEMENT UNIT FTKX-02 AT FORT KNOX, KY

PC23 PLANNED MODIFICATION FOR FURNITURE, FIXTURES, AND EQUIPMENT

PERFORMANCE WORK STATEMENT (PWS) CARETAKER SERVICESLONE STAR ARMY AMMUNITION PLANTPART 1 GENERAL INFORMATIONUPDATED 6 JANUARY 20251. GENERAL: THIS IS A NON-PERSONNEL SERVICES CONTRACT TO PROVIDE CARETAKER SERVICES AT THE LONE STAR ARMY AMMU

MINIMUM GUARANTEE TASK ORDER, N6247825D4041

SOFA T4C

PERFORM RFI

ADD POET SYSTEMS

LONG-TERM MAINTENANCE AND MONITORING/REMEDIAL ACTION OPERATIONS (LTMM/RAO) FOR ENVIRONMENTAL RESTORATION PROGRAM, NAVY (ERN) SITES LF01, LF14, SS06, SS15, CF023, CG110, SS01 AND SS156E AT JOINT BASE PEARL HARBOR-HICKAM, OAHU, HAWAII

MINIMUM GUARANTEE

BASE PRICE

BASE PRICE

MODIFICATION PS0001 IS ISSUED TO EXERCISE OPTION YEAR I FOR THE TWELVE MONTH PERIOD OF PERFORMANCE OF JUNE 1, 2025 - MAY 31, 2026 FOR THE DOWNING O&M GROUNDWATER TRENCH SYSTEM AT THE DENVER FEDERAL CENTER IN LAKEWOOD, CO.

CONTRACT N6274222D1817 FRAC VII CTO N6274225F0114, ANNUAL LONG-TERM MAINTENANCE AND MONITORING AT FORMER BUILDING 21 (SITE 15) & LAND USE CONTROL (LUC) INSPECTION AT 4TH ST. CORAL PIT LANDFILL (SITE 0003), WEST LOCH, JBPHH, OAHU, HAWAII

HURRICANE MATTHEW RECOVERY AT AUTEC

REA FOR FA890318F0154 MOD 5, DESIGN AND REPAIRS VARIOUS FUEL FACILITIES AT HURLBURT AFB, FL

CARETAKER SERVICES

DESIGN AND REPAIR OF VARIOUS FUEL FACILITIES AT ABRAHAM LINCOLN CAPITAL AIRPORT, SPRINGFIELD ANG, IL.

USFWS AROOSTOOK NATIONAL WILDLIFE REFUGE SITE INVESTIGATION, BLDG 8260 VAPOR INTRUSION EVALUATION AND RESPONSE, GMZ 6 BIOSPARGE TREATMENT SYSTEM OPERATIONS PROJECTS: NRCH20217211, NRCH20217243, AND NRCH20217244

PC-21 UNFO MOISTURE BARRIER & PC-22 REA GAS METER

POST AWARD CONFERENCE

COMPLETION OF CMI-O YR 2

EXERCISE OPTION MODIFICATION FOR PEASE, PLATTSBURGH, LORING, AND GRIFFISS AFBS UNDER THE NORTHEAST REGION OF THE BRAC ENVIRONMENTAL CONSTRUCTION AND OPTIMIZATION SERVICES (BECOS) CONTRACT.

BASE REALIGNMENT AND CLOSURE, ENVIRONMENTAL, CONSTRUCTION AND OPTIMIZATION SERVICES (BECOS) FOR REMEDIAL ACTIVITIES SUPPORTING MULTIPLE SITES AS FORMER GRIFFISS AND PLATTSBURGH AFBS, NY, PROJECTS: JREZ20227208C, THWA20227242C, AND THWA20XX7208C.

ENVIROMENTAL REMEDIATION AT LCAAP

CERCLA NPL: IOWA ARMY AMMUNITION PLANT

P00043: PC047 DEMOBILIZATION OF TRAILERS M450/M457 PC049 INCORPORATE ADDITIONAL BRIDGE 3 FUNDING

EXERCISING OPTIONAL TASK CLINS 008 AND 009.

RFI

MODIFICATION FOR ADDITIONAL MOLD REMEDIATION AND FIELD OFFICE OVERHEAD - B458.

SOFA: P00002 - EXERCISE OPTION YEAR 1, CLINS 1001-1009

IMPLEMENT DRAFT METHOD 1633

COMPLETE UFP-QAPP AND REMEDIAL ACTION

COMPLETION OF CMI-O YR 2