WSP USA INC.

THE PURPOSE OF THIS MODIFICATION IS TO ADD NEW CONTRACT LINE-ITEM NUMBERS (CLIN) IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK AS FOLLOWS: 1. ADD AND FULLY FUND NEW CLIN 01102 IN THE TOTAL OBLIGATED AMOUNT OF $533,459.31 FOR PHASE XI UTILITY INT

SERVICES FOR ALL ENGINEERING SERVICES NECESSARY FOR THE PREPARATION OF THE PLANS, SPECIFICATIONS, AND ESTIMATE (PS&E) AND OTHER SUPPORTING DOCUMENTS FOR PROJECT - NC ERFO COE 2021-1(1) - PROJECT CONSISTS OF REPAIRING DAMAGE CAUSED BY A SLOPE FAIL

SERVICES FOR ALL ENGINEERING SERVICES NECESSARY FOR THE PREPARATION OF THE PLANS, SPECIFICATIONS, AND ESTIMATE (PS&E) AND OTHER SUPPORTING DOCUMENTS FOR PROJECT - FL ERFO FW JND 2022-1(1) - J.N. DING DARLING NATIONAL WILDLIFE REFUGE AND IN ACCORD

REVITALIZE HISTORIC CORE.

SERVICES TO PERFORM SUBSURFACE EXPLORATION FOR THE DELIVERY OF A GEOTECHNICAL DATA REPORT FOR PROJECT - DC NP NAMA 26 (1) IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK AND OTHER SUPPORTING DOCUMENTS.

THE PURPOSE OF THIS MODIFICATION IS TO: 1. EXERCISE OPTION YEAR ONE (1) FOR TRAFFIC MONITORING ASSISTANCE OF TRAFFIC COUNT STATIONS IN THE NATIONAL PARK SERVICE AND FULLY FUND CONTRACT LINE-ITEM NUMBER (CLIN) 10101 IN THE TOTAL OBLIGATED AMOUNT OF $

THE PURPOSE OF THIS MODIFICATION IS TO ADD AND FULLY FUND NEW CONTRACT LINE-ITEM NUMBERS (CLIN) FOR THE REHABILITATION AND SAFETY IMPROVEMENTS FOR LINCOLN CIRCLE, MAINE AVENUE, MADISON DRIVE AND JEFFERSON DRIVE - FOR ADDITIONAL WORK TO THE SCOPE OF W

SERVICES TO PERFORM SUBSURFACE EXPLORATION AND LABORATORY TESTING FOR THE DELIVERY OF A GEOTECHNICAL DATA REPORT FOR PROJECT - VA NP GWMP 4(3) IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK AND OTHER SUPPORTING DOCUMENTS.

THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND NEW CONTRACT LINE ITEM-NUMBER (CLIN) 20702 IN THE TOTAL OBLIGATED AMOUNT OF $51,575.38 FOR ADDITIONAL EFFORT OF WORK ASSOCIATED TO TASK ORDER AND IN ASSOCIATED WITH THE ATTACHED STATEMENT

SERVICES TO PERFORM SUBSURFACE EXPLORATION AND LABORATORY TESTING FOR THE DELIVERY OF A GEOTECHNICAL DATA REPORT FOR PROJECT - NC NP BLRI 2M31, BLUE RIDGE PARKWAY (BLRI) BETWEEN MP 336 AND MP 352 IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK AND

THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND NEW CONTRACT LINE-ITEM NUMBER (CLIN) 01001 IN THE TOTAL OBLIGATED AMOUNT OF $155,500.00 FOR ADDITIONAL WORK ASSOCIATED WITH UTILITY COORDINATION SERVICES AND UTILITY RELOCATION PLANS IN A

SERVICES FOR THE PREPARATION OF FINAL DESIGN PLANS, SPECIFICATIONS, AND ESTIMATE (PS&E), CONSTRUCTION SUPPORT, AND OTHER SUPPORTING DOCUMENTS FOR PROJECT - PR ERFO FW CAB 2022-1(1) - RECONSTRUCTION OF COMBATE BEACH BIKE TRAIL AND IN ACCORDANCE WI

SERVICES FOR PROJECT MD NP-GWMP 6(2) - CLARA BARTON CANTILEVER WALL FOUNDATION EVALUATION IN GEORGE WASHINGTON MEMORIAL PARKWAY, MD, IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK AND OTHER SUPPORTING DOCUMENTS.

TRAFFIC ENGINEER TO PROVIDE TRAFFIC MONITORING ASSISTANCE OF TRAFFIC COUNT STATIONS IN THE NATIONAL PARK SERVICE.

THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND CONTRACT LINE-ITEM NUMBER 00401 IN THE TOTAL OBLIGATED AMOUNT OF $14,717.38 FOR WORK ASSOCIATED WITH PROVIDING SUPPORT TO VDOT FOR COMMONWEALTH TRANSPORTATION BOARD (CTB) - ROW/LIMITED AC

THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND NEW CONTRACT LINE-ITEM NUMBER 00701 IN THE TOTAL OBLIGATED AMOUNT OF $48,784.83 FOR CULTURAL SURVEY AND REPORTING IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK. 2. ADD MR. KEVIN ROSE

PROVIDE SERVICES FOR PROJECT TN NP GRSM 11(5) - DESIGNING THE REPLACEMENT OF WILEY OAKLEY DRIVE CROSSOVER BRIDGE, 5460-087P, WITH A NEW FLYOVER BRIDGE, AND NEW ON AND OFF RAMPS.

PROVIDE ENGINEERING SERVICES IN THE COMPLETION OF 44 USAF ROUTINE AND INITIAL BRIDGE AND CULVERT INSPECTIONS, AND FOR THE PREPARATION OF INSPECTION REPORTS AND DATA RELATED TO THESE INSPECTIONS.

PROVIDE SERVICES FOR PROJECT: AR ERFO FS OZSTF810 2022-1(1) - PERMANENT SLIDE REPAIR OF WHITE ROCK ROAD (NFSR 1003) AND EAST FLY GAP ROAD (NFSR 1503) IN THE OZARK-ST. FRANCIS NATIONAL FOREST, FRANKLIN COUNTY, ARKANSAS.

REVITALIZE HISTORIC CORE.

THE PURPOSE OF THIS MODIFICATION IS TO: 1. DECREASE THE TOTAL OBLIGATED AMOUNT FOR CONTRACT LINE-ITEM NUMBER 00101 FROM $217,000.80 BY $49,344.58 TO $167,656.22 DUE TO FUNDING UPDATES. 2. ADD AND FULLY FUND NEW CLIN 00301 IN THE TOTAL OBLIGATED AMO

TRAFFIC ENGINEER TO PROVIDE TRAFFIC MONITORING ASSISTANCE OF TRAFFIC COUNT STATIONS IN THE NATIONAL PARK SERVICE. THE PURPOSE OF THIS MODIFICATION IS FOR THE QUALITY ASSURANCE SPECIALIST TO PROVIDE ADDITIONAL TRAFFIC MONITORING ASSISTANCE FOR TRAFFI

THE PURPOSE OF THIS MODIFICATION IS TO CANCEL CONTRACT LINE ITEM NUMBER (CLIN) 00902, ADD AND FULLY FUND NEW CLINS TO EXERCISE ALL WORK ASSOCIATED WITH OPTION 2 FOR THIS TASK ORDER AS FOLLOWS: 1. CANCEL CLIN 00902. NO FUNDING IS ASSOCIATED WITH THIS

CM SUPPORT.

PROVIDE SERVICES FOR PROJECT: PR ERFO FS ELYUN816 2022-1(5) - GEOTECHNICAL SUBSURFACE EXPLORATION SERVICES EL YUNQUE NATIONAL FOREST RIO GRANDE, PUERTO RICO.

THIS MODIFICATION PROVIDES FOR THE ADDITION AND FULL FUNDING OF NEW CONTRACT LINE-ITEM NUMBERS (CLIN) FOR PROJECT DC NP NAMA 25(1), 501(3) - REHABILITATION OF LINCOLN CIRCLE AND SAFETY IMPROVEMENTS, AS DETAILED IN THE ATTACHED STATEMENT OF WORK: 1.

THE PURPOSE OF THIS MODIFICATION IS TO ADD AND FULLY FUND NEW CONTRACT LINE ITEM NUMBERS (CLIN) FOR A TOTAL OBLIGATED AMOUNT OF $207,007.91. THIS IS FOR BIOLOGICAL AND CULTURAL SURVEY AND REPORTING RELATED TO PROJECT WV ERFO FS MNGAH921 2018-1(1) - M

PROVIDE SERVICES FOR PROJECT DC NP NAMA 25(1), 501(3) - REHABILITATION OF LINCOLN CIRCLE AND SAFETY IMPROVEMENTS THE PURPOSE OF THIS MODIFICATION IS TO ADD AND FULLY FUND NEW CONTRACT LINE-ITEM NUMBERS (CLIN) AS FOLLOWS FOR WORK AS SPECIFIED IN ACCO

TRAFFIC ENGINEER TO PROVIDE TRAFFIC MONITORING ASSISTANCE OF TRAFFIC COUNT STATIONS IN THE NATIONAL PARK SERVICE. THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND NEW CONTRACT LINE ITEM NUMBER (CLIN) 00204 IN THE TOTAL OBLIGATED AMOUNT

THE PURPOSE OF THIS ADMINISTRATIVE MODIFICATION IS TO: 1. DECREASE THE TOTAL OBLIGATED AMOUNT FOR CONTRACT LINE-ITEM NUMBER (CLIN) 00301 AMOUNT FROM $4,025.00 BY $805.00 TO $3,220.00. 2. TOTAL OBLIGATED AMOUNT FOR THIS TASK ORDER IS DECREASED FROM

PROVIDE SERVICES FOR PROJECT: PR FS 27 MP1.3 PHASE 1B FAA - GEOTECHNICAL SUBSURFACE EXPLORATION SERVICES RIO GRANDE, PUERTO RICO TASK 1, IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.

PROVIDE SERVICES FOR PROJECT TN ERFO FS CHRKE804 2020-2(4) - REPAIR STORM AND FLOOD DAMAGE ON LITTLE GASSAWAY ROAD (FS 45) AND SINA BRANCH ROAD (FS 67) IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.

PROVIDE SERVICES FOR PROJECT DC NP NAMA 25(1), 501(3) - REHABILITATION OF LINCOLN CIRCLE AND SAFETY IMPROVEMENTS - THIS CONTRACT IS FOR ALL ENGINEERING SERVICES NECESSARY FOR THE PREPARATION OF THE PLANS, SPECIFICATIONS, AND ESTIMATE (PS&E) AND O

PROVIDE SERVICES FOR AR ERFO FS OZSTF810 2022-1(1)- PERMANENT SLIDE REPAIR OF WHITE ROCK ROAD (NFSR 1003) AND EAST FLY GAP ROAD (NFSR 1503) IN THE OZARK-ST. FRANCIS NATIONAL FOREST, FRANKLIN COUNTY, ARKANSAS IN ACCORDANCE WITH THE ATTACHED STATEMENT

PROVIDE SERVICES FOR PROJECT TN ERFO FS CHRKE804 2020-2(3) - REPAIR STORM AND FLOOD DAMAGE ON PEAVINE SHEEDS CREEK ROAD (FS 221) IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.

THE PURPOSE OF THIS MODIFICATION IS FOR ADDITIONAL LEVEL OF WORK ASSOCIATED TO DESIGN SCOPE CHANGES REQUESTED BY THE FORESTRY SERVICE AND WARRANTED BY STORM EVENTS AS FOLLOWS: 1. INCREASE THE TOTAL OBLIGATED AMOUNT FOR CONTRACT LINE ITEM NUMBER (CLI

THIS IS TASK ORDER NO.33330223FF0010455, W.O NO. 07, AGAINST IDIQ NO. 33330219DF0010370, TO PROVIDE CONSTRUCTION MANAGEMENT SUPPORT TO OPDC FOR RHC.

THE PURPOSE OF THIS MODIFICATION IS TO: 1. CANCEL OPTION LINE-ITEM CONTRACT LINE-ITEM NUMBER (CLIN)00005 IN ITS ENTIRETY IN THE AMOUNT OF $224,597.04. 2. ADD AND FULLY FUND CLIN 00500 IN THE TOTAL OBLIGATED AMOUNT OF $224,597.04. 3. ADD AND FULLY

THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND CONTRACT LINE-ITEM NUMBER (CLIN) 00202 IN THE TOTAL OBLIGATED AMOUNT OF $49,432.96 FOR STAFF LABOR ADJUSTMENT ASSOCIATED TO WORK IN ACCORDANCE WITH TASK 2 IN CLIN 00201. 2. ADD AND FULLY

NASM-UHC RESTORE EXTERIOR ENVELOPE& REPLACE ROOF.

THE PURPOSE OF THIS MODIFICATION IS TO 1. ADD AND FULLY FUND CLIN 00202 IN THE TOTAL OBLIGATED AMOUNT NOT TO EXCEED OF $224,597.04. 2. EXTEND THE TERM OF THE CONTRACT FROM SEPTEMBER 30, 2023, TO SEPTEMBER 30, 2024, FOR THE COMPLETION OF WORK ASSOC

NASM-UHC RESTORE EXTERIOR ENVELOPE& REPLACE ROOF.

REVITALIZE HISTORIC CORE.

PROVIDE SERVICES FOR OH ERFO FS WAYNE914 2021-1(1) - SUBSURFACE EXPLORATION AT WAYNE NATIONAL FOREST HAMILTON TOWNSHIP, OHIO IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.

PROVIDE SERVICES FOR USMP BLRI 1(2) - UNSTABLE SLOPE MANAGEMENT PROGRAM ALONG THE BLUE RIDGE PARKWAY IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.

REVITALIZE HISTORIC CORE.

CM SUPPORT, MECHANICAL ENGINEER/DM SUPPORT FOR OPDC THE SMITHSONIAN FACILITIES (SF), OFFICE OF PLANNING, DESIGN AND CONSTRUCTION (OPDC), ENGINEERING AND DESIGN DIVISION (EDD). MOD P001 CLOSEOUT

THE PURPOSE OF THIS MODIFICATION IS TO: 1. ADD AND FULLY FUND CONTRACT LINE ITEM NUMBER 00302 IN THE TOTAL OBLIGATED AMOUNT OF $71,111.99 FOR WORK ASSOCIATED WITH COMPLETING THE NECESSARY GEOTECHNICAL INVESTIGATIONS NECESSARY TO DESIGN THE RAMP MODI

PROVIDE SERVICES FOR PROJECT FW-BIMU 107(1) - BIG MUDDY NATIONAL WILDLIFE REFUGE, BOONVILLE, COOPER COUNTY, MISSOURI IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.

PROVIDE SERVICES FOR MD NP-GWMP 6(2) - SUBSURFACE EXPLORATION AT CLARA BARTON PARKWAY CANTILEVER STRUCTURE (ST 3300-004P) MONTGOMERY COUNTY, MD IN ACCORDANCE WITH THE ATTACHED STATEMENT OF WORK.