ROCKSOL CONSULTING GROUP, INC.

THE PURPOSE OF THIS MODIFICATION IS TO UPDATE THE SCOPE OF WORK (SOW) AND ADD ADDITIONAL FUNDS FOR CONSTRUCTION INSPECTION SERVICES DUE TO A SCHEDULE EXTENSION FOR THE CA ERFO NP DEVA 2022-1(2) SALT CREEK INTERPRETIVE TRAIL PROJECT.

PROJECT OFFICE ASSISTANT VARIOUS PROJECTS - P0001 ADDS ADDITIONAL FUNDS, INCREASES HOURS AND EXTENDS THE END DATE

QUALITY ASSURANCE REVIEW THE PURPOSE OF THIS NTE TASK ORDER IS QUALITY ASSURANCE REVIEW SERVICES.

WY NPS YELL 12(1), LEWIS RIVER BRIDGE CLOSEOUT MODIFICATION

WY NPS YELL 12(2), YELLOWSTONE RIVER BRIDGE - P00005 MODIFICATION TO ADD CI II

MT FLAP PARK 2021(1), OLD YELLOWSTONE TRAIL SOUTH IMPROVEMENT & PRESERVATION - MOD P00001 ADDS FUNDS & INCREASES THE OVERTIME HOURS TO MATCH THE PRIME CONTRACTOR'S SCHEDULE PER THE SOW.

THE PURPOSE OF THIS MODIFICATION IS TO UPDATE THE SCOPE OF WORK (SOW) AND ADD ADDITIONAL FUNDS FOR CONSTRUCTION INSPECTION SERVICES FOR THE CA ERFO NP DEVA 2022-1(2) SALT CREEK INTERPRETIVE TRAIL PROJECT.

OR FLAP DOT CRGNSA 100(8), MULTNOMAH FALLS VIADUCTS REPAIR - EXTENDS END DATE AND ADDS LINE ITEMS PER SOW.

ID CLARK 6805(1), YALE-KILGORE ROAD, MP 9 TO 16.9 & ID FREMONT 6805(1), YALE-KILGORE ROAD, MP 16.9 TO 30.8 MOD P0003 ADDS A THIRD CI AND INCREASES OVERTIME TO AN ESTIMATED AMOUNT OF 20 HOURS PER WEEK TO MATCH THE CONTRACTORS SCHEDULE PER THE S

WY NPS YELL 12(2), YELLOWSTONE RIVER BRIDGE MODIFICATION TO UPDATE THE SOW AND EXTEND THE POP.

NM NP MULTI PMS(1), PAVEMENT PRESERVATION NEW MEXICO MODIFICATION P00001 ADDS A LINE ITEM FOR AT COST PER DIEM LODGING, REDUCES THE CPE HOURS AND REDUCES THE LUMP SUM OF THE SUPPLIES AND STARLINK LINE ITEM PER THE STATEMENT OF WORK. THIS MODIFICATIO

CONSTRUCTION INSPECTION SERVICES - WAWONA ROAD FIRE REPAIR MOD

ID FLAP SHOSHO MULTI(1), COEUR D ALENE RIVER ROAD AND PRICHARD CREEK ROAD CLOSEOUT MOD

AK NPS KATM 10(4), REHABILITATE VALLEY OF 10,000 SMOKES ROAD PHASE IV CLOSEOUT MOD

WA ERFO NPS OLYM 2022-1(1), OLYMPIC NPS ERFO REPAIRS 2022 - CONSULTANT PROJECT ENGINEER SERVICES FOR ROAD CONSTRUCTION LOCATED IN JEFFERSON COUNTY. WORK INCLUDES BANK STABILIZATION, RIPRAP, EXCAVATION, ROAD RECONSTRUCTION AND EMBANKMENT.

MT FLAP PARK 2021(1), OLD YELLOWSTONE TRAIL SOUTH IMPROVEMENT & PRESERVATION - CONSULTANT PROJECT ENGINEER SERVICES FOR ROAD CONSTRUCTION LOCATED IN PARK COUNTY.

CO FTNP MEVE 100(1) & 101(1) CLIFF PALACE & MESA TOP LOOP ROADS: CONSTRUCTION INSPECTION THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

CO FTNP MEVE 100(1) & 101(1) CLIFF PALACE & MESA TOP LOOP ROADS: CONSTRUCTION INSPECTION THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

CA FTNP YOSE 15(2), GLACIER POINT ROAD CONSTRUCTION INSPECTION TO THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE EXCESS FUNDS AND CLOSEOUT THE TASK ORDER.

OR FS ERFO 2020(1)-14(1), WALLA WALLA SOUTH, UMATILLA REPAIRS 2020 PHASE 1, WA ERFO FS UMATL614 2, WALLA WALLA NORTH, UMATILLA REPAIRS 2020 PHASE 1, OR FS ERFO 2020(1)-14(1), WALLA WALLA SOUTH, UMATILLA REPAIRS 2020 PHASE 2. P00001 ADDS $40,000.00

MT BOR NPS 2021(1), YELLOWTAIL DAM AREA IMPROVEMENTS CLOSEOUT

PROJECT OFFICE ASSISTANT VARIOUS PROJECTS THIS MODIFICATION IS TO DE-OBLIGATE FUNDS IN THE AMOUNT OF $52,769.59 WHICH WERE NOT NECESSARY DURING THE PERIOD OF PERFORMANCE UNDER THIS ORDER AND CLOSES THE TASK ORDER.

ID CLARK 6805(1), YALE-KILGORE ROAD, MP 9 TO 16.9 & ID FREMONT 6805(1), YALE-KILGORE ROAD, MP 16.9 TO 30.8 ADDS A SECOND CI, REDUCES THE ESTIMATED END DATE PER THE SOW.

THE PURPOSE OF THIS MODIFICATION IS TO EXTEND THE PERIOD OF PERFORMANCE AND INCREASE TASK ORDER BUDGET.

WY NPS YELL 12(1), LEWIS RIVER BRIDGE CONSULTANT INSPECTOR SERVICES

PROJECT OFFICE ASSISTANT ADDS ADDITIONAL FUNDING TO THE SUPPLIES, STARLINK SERVICES, PROJECT OFFICE EXPENSES, EQUIPMENT/REPAIRS PER THE STATEMENT OF WORK.

INDEFINITE DELIVERY-INDEFINITE QUANTITY CONTRACT FOR ARCHITECT-ENGINEER SERVICES

WA NP MORA PMS(2), PAVEMENT PRESERVATION MT RAINIER WEST CONSULTANT INSPECTOR (CI) II SERVICES PRICING: FIRM-FIXED-PRICE TOTAL: $192,185.80 PERIOD OF PERFORMANCE: SEE 1. DATE OF ORDER TO 11/29/2025.

OR FS ERFO 2020(1)-14(1), WALLA WALLA SOUTH, UMATILLA REPAIRS 2020 PHASE 1, WA ERFO FS UMATL614 2, WALLA WALLA NORTH, UMATILLA REPAIRS 2020 PHASE 1, OR FS ERFO 2020(1)-14(1), WALLA WALLA SOUTH, UMATILLA REPAIRS 2020 PHASE 2. THIS TASK ORDER IS FOR

WY NPS YELL 12(2), YELLOWSTONE RIVER BRIDGE MODIFICATION TO UPDATE THE SOW AND EXTEND THE POP.

PROJECT OFFICE ASSISTANT VARIOUS PROJECTS

PROJECT OFFICE ASSISTANT EXTEND PERIOD OF PERFORMANCE TO MAY 16, 2026 AND ADDS COST ITEMS.

NM NP MULTI PMS(1), PAVEMENT PRESERVATION NEW MEXICO THIS TASK ORDER IS FOR CONSULTANT INSPECTOR (CI) AND CONSULTANT PROJECT ENGINEER (CPE) SERVICES, PER THE ATTACHED STATEMENT OF WORK (SOW). THE FIRM-FIXED-PRICE FOR THE TASK ORDER IS $850,000.0

THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSEOUT THIS TASK ORDER:6982AF24F00023N. THERE WILL BE A DECREASE OF $31,997.28, REDUCING THE TOTAL AMOUNT FROM $512,398.62 TO $480,401.34 AS A RESULT OF THIS MODIFICATION. AL I

THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE OUT DELIVERY/TASK ORDER: 6982AF21D000002/6982AF24F00042N. THERE WILL BE A DECREASE OF $298.68, REDUCING THE TOTAL AMOUNT FROM $97,702.32 TO $97,403.64 AS A RESULT OF THIS MO

MT NP GLAC 14(6), SWIFTCURRENT SPUR ROAD REHABILITATION CPE SERVICES

HI STP SR30(1) LAHAINA BYPASS 1B-2: CONSTRUCTION INSPECTION THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

CA FW LKL MULTI(1) TRAIL, PARKING & AUTO TOUR ROUTE: CONSTRUCTION INSPECTION THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

CO FLAP LAR 10(1) HORSETOOTH RES AND CARTER LAKE CONSTRUCTION INSPECTION TASK ORDER.

OR FLAP DOT CRGNSA 100(8), MULTNOMAH FALLS VIADUCTS REPAIR CI & CPE SERVICES

AZ/CA FTBR LCD PADA(1) PARKER DAM ROAD: CONSTRUCTION INSPECTION SERVICES THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

WY TIG US212(9) BEARTOOTH HIGHWAY: CONSTRUCTION INSPECTION SERVICES THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE THE REMAINING FUNDS THE SUBJECT TASK ORDER.

PROJECT OFFICE ASSISTANT SERVICES INCREASES ESTIMATED TOTAL HOURS, OFFICE SUPPLIES AND SERVICES, ADDS VERBIAGE FOR THE CONSULTANT TO DRIVE THE GOVERNMENT OWNED VEHICLES AND EXTENDS THE ESTIMATED END DATE

OR FLAP UMATILL 582(1), MILL CREEK ROAD CONSULTANT PROJECT ENGINEER SERVICES

THE PURPOSE OF THIS TASK ORDER IS TO STAFF A CONSTRUCTION INSPECTOR AND A FIELD OFFICE FOR THE CA ERFO FS LSPDR 2023-1(5) EAST CAMINO CIELO. PROJECT WORK CONSISTS OF CONTRACTOR DESIGNED MSE WALLS, MECHANICALLY PLACED ROCK EMBANKMENT, A REINFORCED SOI

MT FLAP BOR 2980(1), SUN RIVER BRIDGE REPLACEMENT CONSULTANT INSPECTOR III SERVICES

WY FLAP NAT 505 & BL 6409(1) CASPER MTN CIR DR & MUDDY MTN RD: CONSTRUCTION INSPECTION THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE REMAINING FUNDS AND CLOSE-OUT THE SUBJECT TASK ORDER.

CA ERFO FS SEQUI 2021-02(2) POWDERHORN BRIDGE: CONSTRUCTION INSPECTION THE PURPOSE OF THIS MODIFICATION IS TO CLOSE-OUT THE SUBJECT TASK ORDER.

CA ERFO NP DEVA 2023-3(1) STORM REPAIRS THE PURPOSE OF THIS MODIFICATION IS TO DO AN ACCOUNTING RE-CLASSIFICATION AND DE-OBLIGATE EXCESS FUNDS.