URS GROUP, INC.

GUSTINE BOMBING RANGE CLIN 0600 DESCOPE

DIAZ CS17

THE PURPOSE OF THIS MODIFICATION IS TO DEOBLIGATE EXCESS FUNDS FROM CLIN 1001.

OPT 2- MONITORING WELL INSTALLATION

DIAZ MOD FOR DELAYS ASSOCIATED WITH UNFORESEEN SUBSURFACE CONCRETE

DEFINITIZATION OF MODIFICATION P00020

DIAZ MODIFICATION FOR TREE REMOVAL AND PFAS SAMPLING

RIA CERCLA SUPPORT - DEOB 23,675.76 TO CLOSEOUT TASK ORDER.

THERMAL TREATMENT CONSTRUCTION AND OPERA

THERMAL TREATMENT CONSTRUCTION AND OPERATION AT THE DIAZ CHEMICAL SUPERFUND SITE. MODIFICATION FOR ADDITIONAL CONCRETE REMOVAL IN STAGE 2 AREA.

SETTLEMENT AGREEMENT

ENVIRONMENTAL SERVICES-ROCK ISLAND ARSEN

DIAZ DEFINITIZATION OF MODIFICATIONS P00017 AND P00018

THERMAL TREATMENT CONSTRUCTION AND OPERA

WACONDA MISSOURI RIVER RIGHT BANK

GUSTINE BOMBING RANGE - REMEDIAL INVESTIGATION / FEASIBILITY STUDY / PROPOSED PLAN / DECISION DOCUMENT

FEASIBILITY STUDY, DATA GAPS INV AND LTM TERMINATION FOR CONVENIENCE TO THE GOVERNMENT, DE-OBLIGATION OF $1,450.00

DIAZ UNILATERAL MOD FOR SUB-SURFACE CONCRETE REMOVAL

DIAZ RA PHASE 2 CONCRETE REMOVAL DEFINITIZATION MOD

PERFORMANCE BASED REMEDIATION-TRANSFER GOVERNMENT FURNISHED PROPERTY TO THE GOVERNMENT-FORMER MATHERS AIR FORCE BASE, CALIFORNIA

RCRA GROUNDWATER MONITORING - DE-OBLIGATION MODIFICATION. AS A RESULT OF THIS MODIFICATION, THE TOTAL CONTRACT AMOUNT IS HEREBY DECREASED BY $573,384.00, FROM $1,016,772.00 TO $ $443,388.00.

REMEDIAL INVESTIGATION AT TEMECULA BOMBING TARGET NO.107 AT RIVERSIDE COUNTY, CALIFORNIA DEOBLIGATION

DIAZ SUPERFUND SITE. UNILATERAL MODIFICATION FOR RA STAGE 2 CONCRETE REMOVAL

REMEDIAL INVESTIGATION AT THE TEMECULA BOMBING TARGET NO. 107 AT RIVESIDE COUNTY, CALIFORNIA, DEOBLIGATION.

THE PURPOSE OF THIS MODIFICATION IS TO ISSUE A SETTLEMENT FOR THE CLAIM SUBMITTED ON 6 FEBRUARY 2023, IN THE AMOUNT OF $887,457.76.

STANISLAUS, MERCED COUNTIES CALIFORNIA, REMEDIAL INVESTIGATION - GUSTINE BOMBING RANGE- ADDED FUNDED CLINS 0203, 0505

PRIMARY SOURCE REMOVAL/REMEDY IN PLACE

DE-SCOPE - LTM - CLIN 0097

THERMAL TREATMENT CONSTRUCTION AND OPERATION, THIS MODIFICATION IS TO EXERCISE AN OPTION FOR ADDITIONAL SITE RESTORATION WELL ABANDONMENT WORK

MODIFICATION TO ADDRESS DIFFERING SITE CONDITIONS AND CHANGES TO THE PFC/PFAS SAMPLING AND MITIGATION REQUIREMENT FOR THE IMPACTED WATER DISTRICTS.

THERMAL TREATMENT CONSTRUCTION AND OPERA, ADD BIL SIGNAGE TO SITE

AWARD REA ON CLINS 0003 AND 0011

DE-OBLIGATION OF PWS TASKS 8.2,9, AND 10

DIAZ OCTOBER CHANGE ORDER REQUEST

WVN 16 AND WVN 17 MOD P00003

EXERCISING OPTION CLIN 17 - OPT 6 PROPOSED PLAN, 18 - OPT 7 DECISION DOCUMENT, AND 23 - OPT 12 SEMI-ANNUAL GROUNDWATER MONITORING

EXERCISE OPTION 42AK AND 44AU. PRIMARY SOURCE REMOVAL/REMEDY IN PLACE

THERMAL TREATMENT CONSTRUCTION AND OPERA

GARLAND ROAD LANDFILL PROJECT, -$10,000 DEOB

DESCOPE CLIN 0025AC & 0025AD

REOBLIGATION OF FUNDS.

REMOVAL AND DISPOSAL OF FENCE, SOIL REME

CHANGE OF PERFORMANCE WORK STATEMENT.

WACONDA MISSOURI RIVER RIGHT BANK

REMOVAL AND DISPOSAL OF FENCE, SOIL REME

HAMILTON-LABREE REMEDIATION SERVICES