ENGINEERING/REMEDIATION RESOURCES GROUP, INC.

COLLECTION OF GROUNDWATER AND SURFACE WATER SAMPLES, LABORATORY ANALYSIS, REPOSITORY INSPECTION AND REPAIRS, AND REPORTING IN SUPPORT OF CERCLA REMOVAL ACTION AT JUNIPER URANIUM MINE ON STANISLAUS NATIONAL FOREST.

THE PURPOSE OF THIS MODIFICATION IS TO INCORPORATE THE MANDATORY CONTRACT CLAUSE ADDRESSING DEI DISCRIMINATION BY FEDERAL CONTRACTORS, AS REQUIRED BY EXECUTIVE ORDER 14398.

ANNUAL MAINTENANCE ON THREE MINE ADIT DISCHARGE DAMS, PIPING, VALVES, DITCHES AND PONDS TO ENSURE PROTECTION OF NEARBY CLEAR CREEK. INCLUDES UNDERGROUND ENTRY (MSHA CERTIFICATION REQUIRED). REMOVAL ACTION IN LATE SPRING/EARLY SUMMER OF 2026 TO PE

COCM/COPM UPDATE

ONE ACQUISITION SOLUTION FOR INTEGRATED SERVICES PLUS (OASIS+) SMALL BUSINESS MULTIPLE AGENCY CONTRACT (MAC)

MODIFICATION P00007 AUTHORIZES THE REGULATORY REQUIREMENT FOR ALLOWABLE LEAD IN SOIL IN A RESIDENTIAL SETTING, THE CONTRACTOR WILL REMOVE, TRANSPORT AND DISPOSE APPROXIMATELY 191 CUBIC YARDS OF LEAD CONTAMINATED SOIL AND BACKFILL THE EXCAVATED AREAS

TEST AND REMOVE LEAD-BASED PAINT AND PERFORM SIDING AND TRIM REPAIR ON BUILDINGS AT ZIGZAG RANGER STATION

P00002 - $0.00 PERFORMANCE EXTENSION COCO VERBAL EXCEPTION APPROVED 01/22/2026 TASK ORDER TO PREPARE A FOCUSED CERCLA ENGINEERING EVALUATION/COST ANALYSIS (EE/CA) FOR OPERABLE UNITS (OU) 2, THE CABINS AREA, AND OU3, THE CABIN 29/EAST IN THE MAMMO

FEDERAL SUPPLY SCHEDULE CONTRACT

FY26 G-7 VEGETATION CLEARANCE, OPERATIONAL RANGE CLEARANCE FOR MARINE CORPS BASE CAMP LEJEUNE, NORTH CAROLINA.

MOD P00003: EXERCISE OPTION YEAR 3, DEOBLIGATE MINIMUM GUARANTEE, UPDATES ORDER LIMITS AND RETURN CO TO KLENISE WALLACE THE R5 ENVIRONMENTAL SITE INVESTIGATION & CLEANUP IDIQ IS A MULTI-AWARD SERVICE CONTRACT FOR NON-CERCLA PROJECTS INCLUDING

SAMPLING, TESTING, AND MATERIAL DISPOSAL OF INCINERATED MATERIAL AT PATRICK CREEK WATER SYSTEM SITE.

NO-COST (POP) EXTENSION FOR SIX (6) MONTHS FOR OPERATIONS AND MAINTENANCE OF GROUNDWATER REMEDIAL ACTIONS AT FORMER MARINE CORPS AIR STATION TUSTIN, CALIFORNIA.

THE TASK ORDER FINALIZES THE FS, PP, AND ROD UNDER CERCLA, SETTING SITE-SPECIFIC REMEDIAL OBJECTIVES, EVALUATING ALTERNATIVES, AND SELECTING THE PREFERRED CLEANUP REMEDY.

ACQR - 6119382 - MODIFICATION FOR NO-COST POP EXTENSION, 6 MONTHS, OPERATION, MAINTENANCE, MONITORING, AND OPTIMIZATION OF THE GROUNDWATER REMEDIES FOR IRP SITES 1 AND 2

ATTACHMENT 1: MATOC PWS DATED MARCH 2021_3.16.21