AMD2_ N6274225R65020002_Released.pdf

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11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print) 16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

16C. DATE SIGNED

Previous edition unusable STANDARD FORM 30 (REV. 11/2016) Prescribed by GSA FAR (48 CFR) 53.243

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X) 9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBE

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

Block 14 (Description of Amendment/Modification): Amendment 0002 N6274225R6502 D/B Construct Logistics Resupply Pad and Improve Access Road at Bahn Di Lang Range, Lopburi, Thailand

A. The response to Pre-Proposal Inquiries (PPIs) is provided in Attachment-01 Answers to Pre-Proposal Inquiries (PPIs) B. The Summary of changes under Parts 3 and 4 is provided in Attachment-02 Summary of Changes.

C. As a result of the responses to the PPIs, the Revised Bill of Quantities is included in Attachment 03 - BOQ Amendment 0002.

E. Additionally, this amendment is to incorporate FAR clause 52.217-7 -- Option for Increased Quantity - Separately Priced Line Item (MAR 1989) in the solicitation.

D. The date set for receipt of proposals remains unchanged and is July 22, 2025, at 11:00 a.m., Thailand Time.

All other paragraphs, provisions, and conditions remain unchanged. The offeror must acknowledge receipt of this amendment.

Section 00 70 00 - Conditions of the Contract

Miscellaneous text in this section has been modified to:

52.217-7 OPTION FOR INCREASED QUANTITY--SEPARATELY PRICED LINE ITEM (MAR 1989)

The Government may require the delivery of the numbered line item, identified in the Schedule as an option item, in the quantity and at the price stated in the Schedule. The Contracting Officer may exercise the option unilaterally by modification to the Contractor within ninety (90) calendar days from contract award for CLIN 0003 Option Item 0001. Delivery of added items shall continue at the same rate that like items are called for under the contract, unless the parties otherwise agree.

(End of clause)

Section 01 00 00 - General Requirements

The Requirements text has been modified to:

Amendment 0002 - N6274225R6502 D/B Construct Logistics Resupply Pad and Improve Access Road at Bahn Di Lang Range, Thailand

N6274225R65020002

PRE PROPOSAL INQUIRY FORM N6274225R6502

Answers to PPIs

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

1 Is it necessary to specify the main machinery and equipment to be used in the project?

This is a design-build project. It is not necessary to specify primary machinery or equipment in the contractor’s proposal. The contractor shall be responsible for determining and providing suitable equipment, means, and methods required to execute the work in compliance with all contract requirements.

2 Must the sources of crushed stone and gravel materials be identified, along with the concession or operating permits attached?

Yes. The contractor shall identify the sources of materials, operating permits, or concessions for material sourcing, as part of the material submittals.

Per Amendment 0001, Part 3, Section 6.2 CLIN 0002:

BASE BID ITEM 0002 - IMPROVE 15 KM ACCESS

ROAD, G2010 ROADWAYS, COMPACTED

CRUSHED/GRAVEL ROAD, and Section 6.3 CLIN

0003: OPTION ITEM 0001 - IMPROVE 6 KM

ACCESS ROAD, G2010 ROADWAYS,

COMPACTED CRUSHED/GRAVEL ROAD: “The contractor shall identify the sources of crushed stone and gravel materials and provide copies of the operating permits or concessions for material sourcing.

Submit this information as part of the material submittals to the COR for review and acceptance.”

3 How many points per kilometer are required for field density testing?

The DOR shall determine the testing frequency and locations based on site conditions and applicable standards.

Per Amendment 0001, Part 3, Section 6.2 CLIN 0002:

BASE BID ITEM 0002 - IMPROVE 15 KM ACCESS

ROAD, G2010 ROADWAYS, COMPACTED

CRUSHED/GRAVEL ROAD, and Section 6.3 CLIN

0003: OPTION ITEM 0001 - IMPROVE 6 KM

ACCESS ROAD, G2010 ROADWAYS,

COMPACTED CRUSHED/GRAVEL ROAD:

“TESTING: Perform field density tests on compacted layers to verify compliance with specified compaction requirements for all pavements, roads, and related structures. The DOR shall determine the testing frequency and locations based on site conditions and applicable standards.”

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Amendment 0002 - Attachment 1 - Answers to PPI

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

4 Should the test results be submitted to and certified by the

Department of Highways, the Department of Public Works, or another agency?

No. Test results shall be certified by an accredited third-party laboratory. Submit all test reports to the COR for review and acceptance prior to proceeding with subsequent construction layers.

Per Amendment 0001, Part 3, Section 6.2 CLIN 0002:

BASE BID ITEM 0002 - IMPROVE 15 KM ACCESS

ROAD, G2010 ROADWAYS, COMPACTED

CRUSHED/GRAVEL ROAD, and Section 6.3 CLIN

0003: OPTION ITEM 0001 - IMPROVE 6 KM

ACCESS ROAD, G2010 ROADWAYS,

COMPACTED CRUSHED/GRAVEL ROAD:

“TESTING: Test results shall be certified by an accredited third-party laboratory. Submit all test reports to the COR for review and acceptance prior to proceeding with subsequent construction layers.”

5 Is it mandatory to perform CBR (California Bearing Ratio) testing on all types of materials used?

Yes. CBR testing is required on subgrade and imported fill materials used in road construction.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, i. Subgrade preparation, and Section 5.3.2

ACCESS ROAD, i. Subgrade preparation: "Perform

California Bearing Ratio (CBR) testing on in-situ subgrade and imported fill materials used in road construction, in accordance with the relevant codes and standards in Section 2.1, applying the most stringent requirements. Submit CBR results to the COR for review and acceptance. If subgrade strength is found to be insufficient, propose and implement soil improvement measures for Government review and acceptance."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

6 Is the preparation of the Environmental Impact Assessment (EIA) report the contractor’s responsibility?

No. The contractor is not responsible for preparing a

EIA report. However, the contractor is required to file an EIA Screening Application, as applicable.

Per RFP Part 3, Section 2.1 APPLICABLE CODES

AND STANDARDS, Paragraph 4, page 2 of 16: The contractor is required, as applicable, to file an

Environmental Impact Assessment (EIA) Screening

Application with the corresponding Department of

Environment (DoE) office having regional jurisdiction.

The contractor must comply with the requirements of this determination, including, as a minimum, the preparation of an Environmental Management Plan

(EMP). The EMP shall be approved by the DoE, and the contractor shall comply with its provisions and conditions related to project construction activities, pollution prevention, and proper disposal of waste.

7 For soil compaction testing, must every compacted layer be tested, and what is the required testing interval in meters per test point?

Field density tests on compacted layers are required.

The DOR shall determine the testing frequency and locations based on site conditions and applicable standards.

Refer to the Government response provided under

Question No. 3 for similar direction and applicability.

8 Is it possible for NAVFAC to designate the locations of the drainage pipes?

No. The DOR shall determine the location of drainage pipes (culverts) based on site-specific hydrologic analysis.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, e. Drainage, and Section 5.3.2 ACCESS

ROAD, e. Drainage: "The DOR shall determine the final location, length, and dimensions of ditches and culverts based on site-specific hydrologic analysis."

This is a design-build project. The DOR shall design the project to accommodate the requirements per

Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

9 What type of drainage system is specified for the project — circular pipes or reinforced concrete box culverts?

Reinforced concrete drainage pipes and box culverts are specified for this project.

Per Amendment 0001, Part 3, Section 5.2.3 LOW-

WATER CROSSING, e: "Where warranted by site conditions (such as deeper crossings, drainage requirements, or expected high-water flow), the DOR shall design and include reinforced concrete drainage pipes (culverts) beneath the slab"

Per Amendment 0001, Part 3, Section 5.3.3 LOW-

WATER CROSSING, f: "Where warranted by site conditions (such as deeper crossings, drainage requirements, or expected high-water flow), the DOR shall design and include reinforced concrete box culverts beneath the slab"

10 For the 15-kilometer roadwork, how many meters on each side of the road must be cleared?

The DOR shall determine final clearing limits based on site conditions.

Per Amendment 0001, Part 3, Section 5.1.1 CIVIL

WORK, and Part 3, Section 5.2.1 CIVIL WORK, and

Part 3 under Section 5.3.1 CIVIL WORK: "b. Site clearance/cutting: Vegetation that does not impede or prevent the construction of the road alignment, concrete pavements, or associated works shall be preserved. The contractor shall minimize vegetation removal to reduce erosion and environmental impact and shall avoid clear-cutting the entire area. Vegetation shall be cleared along the road alignment and concrete pavements to accommodate the carriageway, shoulders, drainage features, and necessary construction working areas. Final clearing limits shall be determined by the

DOR based on site conditions. The contractor shall submit a site clearance plan for COR approval prior to the removal of any trees."

11 What is the required elevation difference of the road compared to the original ground level?

This is a design-build project. The DOR shall design the project to accommodate the requirements per

Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

12 For this project, which level of environmental assessment is required: IEE, EIA, or EHIA?

None of these. However, the contractor is required to file an EIA Screening Application, as applicable.

Refer to the Government response provided under

Question No. 6 for similar direction and applicability.

13 There appear to be 15 additional water flow paths that are not indicated in the original design.

How should these be addressed or incorporated into the plan?

This RFP does not include an original design or construction drawings for the low-water crossings, only a concept site layout of the access road, which is for information only, and minimum design and construction requirements. The number of low-water crossings is fourteen for CLIN 0002 and two for CLIN

0003. The DOR shall determine the final locations and dimensions of the low-water crossings based on site conditions and hydrological assessment.

Per Amendment 0001, Part 3, Section 5.2.3 LOW-

WATER CROSSING: "Design and construct concrete-slab fords for low-water crossings along the access road. ... The DOR shall determine the final locations and dimensions of the low-water crossings based on site conditions and hydrological assessment. The minimum requirements shall include, but are not limited to, the following:

a. Number of low-water crossings: Fourteen (14)..."

Per Amendment 0001, Part 3, Section 5.3.3 LOW-

WATER CROSSING: "Design and construct concrete-slab fords for low-water crossings along the access road. ... The DOR shall determine the final locations and dimensions of the low-water crossings based on site conditions and hydrological assessment. The minimum requirements shall include, but are not limited to, the following:

a. Number of low-water crossings: Two (2)..."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

14 Is it permissible to use local materials (such as laterite or soil) from areas near the construction site?

No.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, and Section 5.3.2 ACCESS ROAD: "j.

Backfill and imported fill: Supply and place backfill and imported fill material as required to achieve the design subgrade, shoulders, and embankments (if required by the DOR). All fill material shall meet quality requirements specified by the DOR and be placed and compacted in accordance with applicable standards to support heavy vehicle traffic."

15 After clearing the area, do tree branches and other organic debris need to be transported off-site for disposal? Or can they be disposed of on-site if space is available? If off-site disposal is required, is there a designated disposal area?

No. All debris, including tree branches and other organic material, shall be hauled off-site. The contractor shall coordinate with the end user and COR to confirm a designated disposal area.

Per RFP Part 4, Section G101007 DEBRIS

DISPOSAL, page 5 of 7: "All grubbing and clearing residue, demolished material, rubbish and debris generated by this project shall be hauled off-site and off station by the Contractor and disposed of properly in accordance with the local requirements/regulations.

Coordinate with the end user and COR prior to conduct this activity."

16 Some sections of the planned road pass through privately owned farmland. If the road needs to be widened according to the design, will this create any issues with the landowners?

No. The entire project site belongs to the Royal Thai

Army, and there is no privately owned land within the planned road alignment.

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

17 Are there any nearby water sources that may be used to support construction activities?

Yes.

Per Amendment 0001, Part 3, Section 3.1 EXISTING

SITE CONDITIONS: "Water source: The Huai Yai

Reservoir is situated approximately 1 km west of the access road starting point (KM 0). The contractor shall conduct an investigation of nearby water sources to assess their suitability for construction-related use.

Utilization of any water source shall comply with all applicable environmental requirements and local regulatory provisions."

18 Part 3, Clause 5.3.2 The access road detail shows only a 200mm compacted gravel layer. However, there is no mention regarding the subgrade layer.

Could you kindly clarify whether a subgrade layer is required for the access road construction?

Yes. A subgrade layer is required for the access road construction.

A minimum thickness of 200mm for a compacted crushed/gravel road is a concept and for information only. This is a design-build project. The DOR shall design the project to accommodate the requirements per Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, and Section 5.3.2 ACCESS ROAD: "i.

Subgrade preparation: The DOR shall assess existing subgrade conditions and design measures (e.g., compaction or stabilization) to ensure the road supports heavy vehicle traffic without excessive rutting or settlement. Perform California Bearing Ratio (CBR) testing on in-situ subgrade and imported fill materials used in road construction, in accordance with the relevant codes and standards in Section 2.1, applying the most stringent requirements. Submit CBR results to the COR for review and acceptance. If subgrade strength is found to be insufficient, propose and implement soil improvement measures for Government review and acceptance."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

19 Part 3, Clause 5.3.2 As per the Scope of Works, the access road is indicated to be 4 and 6 meters wide. However, there is no mention of road shoulders on either side to protect and support the road structure.

Could you please confirm whether shoulders are required on both sides of the access road?

Yes. Shoulders are required on both sides of the access road.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, and Section 5.3.2 ACCESS ROAD: "f.

Shoulders: Construct shoulders on both sides of the road with a minimum width of 1.0 m each side to improve road edge stability and prevent edge deterioration. The DOR shall determine the final width, material, and construction method for shoulders based on site conditions and traffic requirements."

20 Part 3, Clause 5.3.2 Is the existing ground at the concrete pad construction area sloped or flat? Additionally, could you please confirm whether erosion protection (e.g., at the edges of the concrete pad) is required?

The contractor is required to perform a topographic survey to verify the existing site conditions.

Erosion control measures are required.

Per RFP Part 2, Section 5 DESIGN, Paragraph 1, page

5 of 48: "Perform topographical survey, soil investigations, field investigations and verification of existing site conditions as may be required to support the development of the design and construction of the project."

Per RFP Part 3, Section 5.1.1 CIVIL WORK, page 6 of 16: "f. Prevent erosion from occurring by providing erosion control measures as required."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

21 Part 3, Clause 5.2.3 Does the water flow underneath the concrete slab, or is the flow still expected to pass over the slab even during such low-flow periods?

Yes. Water flow is expected to pass over the concrete slab.

Per Amendment 0001, Part 3, Section 6.2 CLIN 0002:

BASE BID ITEM 0002 - IMPROVE 15 KM ACCESS

ROAD, G2010 ROADWAYS, LOW-WATER

CROSSING, and Section 6.3 CLIN 0003: OPTION

ITEM 0001 - IMPROVE 6 KM ACCESS ROAD,

G2010 ROADWAYS, LOW-WATER CROSSING:

“Water flow is anticipated to pass over the concrete slab surface under certain conditions. The DOR shall evaluate flow behavior as part of the hydrological assessment to ensure that the final design adequately manages site-specific drainage and preserves vehicular access during all weather events.”

22 Part 3, Clause 5.2.3 Is erosion protection required for low water crossing section? Yes. Erosion control measures are required.

Per Amendment 0001, Part 3, Section 5.2.3 LOW-

WATER CROSSING: "g. Implement erosion protection measures at the edges of the concrete slab to prevent scour and undermining. The DOR may propose apron slabs, riprap, gabions, or other equivalent measures based on site conditions and hydrological assessment."

23 Part 3, Clause 5.2.3 Is apron slab required in low water crossing? Also is apron required in upstream or not? Is it required in entire length or certain sections only?

The DOR may propose apron slabs, riprap, gabions, or other equivalent measures based on site conditions and hydrological assessment.

This is a design-build project. The DOR shall design the project to accommodate the requirements per

Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

Per Amendment 0001, Part 3, Section 5.2.3 LOW-

WATER CROSSING: "g. Implement erosion protection measures at the edges of the concrete slab to prevent scour and undermining. The DOR may propose apron slabs, riprap, gabions, or other equivalent measures based on site conditions and hydrological assessment"

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

24 Part 3, Clause 5.2.3 Is flood protection required? No. Flood protection is not required. Water flow is anticipated to pass over the concrete slab.

Per Amendment 0001, Part 3, Section 6.2 CLIN 0002:

BASE BID ITEM 0002 - IMPROVE 15 KM ACCESS

ROAD, G2010 ROADWAYS, LOW-WATER

CROSSING, and Section 6.3 CLIN 0003: OPTION

ITEM 0001 - IMPROVE 6 KM ACCESS ROAD,

G2010 ROADWAYS, LOW-WATER CROSSING:

“Water flow is anticipated to pass over the concrete slab surface under certain conditions. The DOR shall evaluate flow behavior as part of the hydrological assessment to ensure that the final design adequately manages site-specific drainage and preserves vehicular access during all weather events.”

25 Section 00 22 00 -

Supplementary Instructions /

Volume2 offeror experience / page 14/41

In case we will utilize the subcontractor 's experience for past performance project data sheet, what document or agreement details between prime contractor and subcontractor do you require for submission?

If an Offeror intends to utilize the experience of a subcontractor in the Past Performance Project Data

Sheet, the Offeror must submit evidence of a binding teaming agreement or other contractual arrangement demonstrating the subcontractor’s meaningful involvement in the performance of the contract.

Per RFP, PART II - Evaluation Factors for Award, Section 2.1 Evaluation Criteria, items d. and e. Page 12 of 41:

d. Offerors who submit past performance and experience information of a parent, sister, predecessor, subcontractor, or other affiliated company must describe what involvement such company will have on the acquisition. The proposal should clearly indicate how the resources of the parent, sister, predecessor or other affiliated company - its workforce, management, facilities, or other resources - will be provided or relied upon for contract performance.

e. The Contracting Officer may discount favorable past performance and experience of a subcontractor unless the prime contractor clearly provides, in its proposal, evidence of a binding teaming agreement or other contractual agreement which creates legal responsibility on the part of the subcontractors.

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

26 Section 00 22 00 -

Supplementary Instructions /

Volume2 offeror experience / page13/41

Please kindly consider offeror 's experience which RFP required for design-build construction projects. Can it also utilize the experience of construction only projects due to most of the road or earthwork in Thailand are construction only project (not design-build project) and could you consider extending experience period to the past 7 years (instead of 5 years)?

No, the USG will not accept a construction-only project to meet the design-build experience requirement and will not extend the recency period beyond 5 years.

Per RFP Part 1, Section 2.3 EVALUATION

FACTORS AND PROPOSAL SUBMISSION

REQUIREMENTS, (2.1) Non-Cost Factor 1 - Offeror

Experience, Page 13 of 41: "For purposes of this evaluation, a relevant project is further defined as similar design-build construction with the following relevant characteristics for all projects unless otherwise stated." and "Projects submitted for the Offeror shall be completed within the past (5) years of the date of issuance of this RFP. If submitting an ongoing construction project, the project shall be at least 80% complete at the time of proposal submission. A project is defined as a construction project performed under a single contract."

27 Section 00 22 00 -

Supplementary Instructions /

Volume2.4 Technical solution / page16/41

Could you kindly share us any available topography data or any soil test report (if available).

No. Topography data and soil test report are not available.

Per RFP Part 2, Section 5 DESIGN, Paragraph 1, page

5 of 48: "Perform topographical survey, soil investigations, field investigations and verification of existing site conditions as may be required to support the development of the design and construction of the project."

28 Part3 statement of work / page6/16, 7/16, 8/16

As stated in the project description "The Contractor is required to retain a Geotechnical Engineer experienced and licensed in the geographic region of the project to develop geotechnical requirements to support design and construction"

Please kindly confirm whether the requirement is a geotechnical engineer license or a civil engineer license?

Geotechnical engineer in Thailand shall be a licensed civil engineer.

Per Amendment 0001, Part 3, Section 5.1.1 CIVIL

WORK, and Part 3, Section 5.2.1 CIVIL WORK, and

Part 3 under Section 5.3.1 CIVIL WORK: "e. The

Contractor is required to retain a Geotechnical

Engineer, who is a licensed Civil Engineer experienced in the geographic region of the project, to develop geotechnical requirements to support design and construction. "

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

29 Site visit Please kindly consider excluding warranty coverage for the damage of crusher-run roadwork caused by natural flooding and erosion, which are unpredictable.

No. The Government does not intend to modify the warranty requirements or exclude specific materials or conditions from warranty coverage. Offerors should ensure that their pricing and risk assessments consider environmental and site-specific factors.

Per RFP Part 2, Section 23. WARRANTY, page 27 of

48: "Per FAR 52.246-21 Warranty of Construction

(APR 1984), the Contractor shall warranty all material and workmanship for a period of 12 months from the official acceptance date by the Government."

30 Site visit For site earthwork, can we utilize the on-site existing soil for backfill, grading, leveling, and embankment in order to there is no cost of imported soil?

No.

Refer to the Government response provided under

Question No.14 for similar direction and applicability.

31 Site visit / the improve 15 km access road work

For better quality, the embankment using improved soil is recommended before the crushed stone work (see below picture).

Please kindly clarify whether embankment soil is required or not

The DOR shall determine if embankments are required based on site conditions and design requirements.

This is a design-build project. The DOR shall design the project to accommodate the requirements per

Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, and Section 5.3.2 ACCESS ROAD: "i.

Subgrade preparation: The DOR shall assess existing subgrade conditions and design measures (e.g., compaction or stabilization) to ensure the road supports heavy vehicle traffic without excessive rutting or settlement. ... If subgrade strength is found to be insufficient, propose and implement soil improvement measures for Government review and acceptance.

j. Backfill and imported fill: Supply and place backfill and imported fill material as required to achieve the design subgrade, shoulders, and embankments (if required by the DOR). All fill material shall meet quality requirements specified by the DOR and be placed and compacted in accordance with applicable standards to support heavy vehicle traffic."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

32 Site visit Please kindly confirm the low-water crossing for:

1. The number of the low-water crossings.

2. The concept of the low-water crossing section.

The number of low-water crossings has been updated in Amendment 0001. Per Amendment 0001, the number of low-water crossings is fourteen (14) for

CLIN 0002 and two (2) for CLIN 0003.

The DOR shall determine the final locations, dimensions, and section concept of the low-water crossings based on site conditions and hydrological assessment.

This is a design-build project. The DOR shall design the project to accommodate the requirements per

Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

Refer to the Government response provided under

Question No. 13 for similar direction and applicability.

33 Site visit Please kindly allow the material stock yard to be inside the site area.

Yes. The material stockyard shall be located within the laydown site area.

Per Amendment 0001, Part 3, Section 1. PROJECT

DESCRIPTION: "The Base will authorize the establishment of a worker camp, a laydown area, the staging of construction machinery, and a stockyard, all located on base, to support construction activities.

Authorization is contingent upon the contractor satisfying all specified requirements and obtaining formal approval from the designated Base representative. This approval shall address, at a minimum, the proposed location, layout, and operational details of the worker camp; the deployment and use of construction machinery; management of the stockyard; identification of assigned personnel;

scheduling of operational hours; and maintenance and availability of worker records. All components and activities shall comply with applicable Base regulations."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

34 Part3 statement of work / page2/16

Is the EIA approval process excluded from the total design and construction duration of 380 days?

RFP stated that "The contractor is required, as applicable, to file an Environmental Impact Assessment (EIA) Screening

Application with the corresponding Department of Environment

(DoE) office having regional jurisdiction".

Yes, the EIA approval process is excluded from the total period of performance (PoP) of 380 calendar days. However, the PoP includes the EIA screening process, if such a screening is required under Thai law.

All activities, including any applicable environmental review or approval, shall be completed within this timeframe.

35 Part 3 page 8 /5.2.3 Low water crossing

Please confirm the number and locations of the low-water crossing concrete slabs.

Per Amendment 0001, the number of low-water crossings is fourteen (14) for CLIN 0002 and two (2) for CLIN 0003. The DOR shall determine the final locations and dimensions of the low-water crossings based on site conditions and hydrological assessment.

Refer to the Government response provided under

Question No. 13 for similar direction and applicability.

36 Part 3 page 6/5.work/room requirements.

Is it permissible to construct temporary accommodations for machinery and laborers?

Yes. The worker camp and staging of construction machinery shall be located within the site area.

Refer to the Government response provided under

Question No. 33 for similar direction and applicability.

37 Part 3 page 7 /5.2.2 access road sec e

Is it required to have drainage ditches along the full length of the roadside?

No. Drainage ditches may not be required along the full length of the roadside.

This is a design-build project. The DOR shall design the project to accommodate the requirements per

Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, and Section 5.3.2 ACCESS ROAD: "e.

Drainage: Provide roadside drainage ditches along the high side of the access road to collect and convey stormwater to reinforced concrete culverts and low-water crossings. Where warranted by site conditions, include localized ditching or outfall structures on the low side. The DOR shall determine the final location, length, and dimensions of ditches and culverts based on site-specific hydrologic analysis."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

38 Part 3 page 7 /5.2.1 civil work sec b

Could you please let us know the size of trees that can be cut down without prior notification?

There is no specified size of trees that may be removed without prior notification and approval. The DOR shall determine final clearing limits based on site conditions and submit a site clearance plan for COR approval before removing trees.

Per Amendment 0001, Part 3, Section 5.1.1 CIVIL

WORK, and Part 3, Section 5.2.1 CIVIL WORK, and

Part 3 under Section 5.3.1 CIVIL WORK: "b. Site clearance/cutting: Vegetation that does not impede or prevent the construction of the road alignment, concrete pavements, or associated works shall be preserved. The contractor shall minimize vegetation removal to reduce erosion and environmental impact and shall avoid clear-cutting the entire area. Vegetation shall be cleared along the road alignment and concrete pavements to accommodate the carriageway, shoulders, drainage features, and necessary construction working areas. Final clearing limits shall be determined by the

DOR based on site conditions. The contractor shall submit a site clearance plan for COR approval prior to the removal of any trees."

39 Part 3 page 7 /5.2.2 access road Would it be possible to consider adjusting the road construction alignment?

Yes. This is a design-build project. The DOR shall design the project to accommodate the requirements per Section 2.1 APPLICABLE CODES AND

STANDARDS in RFP Part 3, pages 2 of 16.

Offerors shall not base their proposals on assumptions that deviations from the RFP requirements. Proposals that are contingent upon unapproved changes or fail to meet the RFP requirements will not be considered.

Per Amendment 0001, Part 3, Section 5.2.2 ACCESS

ROAD, and Section 5.3.2 ACCESS ROAD: "g.

Alignment adjustments: The DOR may propose adjustments to the access road alignment to improve constructability, drainage, or reduce environmental impacts. Any proposed adjustments shall be submitted for Government review and approval prior to implementation."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

Question No. Reference (Sect/Para/Page) QUESTION GOVERNMENT RESPONSE

40 Part 3 page 6/5.work/room requirements.

How many routes are available for transporting materials to the facility, and where are they located?

Three (3) routes are available for transporting materials to the site area.

Per Amendment 0001, Part 3, Section 3.1 EXISTING

SITE CONDITIONS, External road: "The access road begins at KM 0, located approximately 9 km east of public road No. 1 at the west gate of the Artillery

Center. At KM 15, the access road lies approximately 4 km north of public road No. 3333. The access road terminates at KM 21, where the LRP site is situated approximately 8 km north of public road No. 3333.

The access road and the LRP site are currently accessible only by 4-wheel-drive vehicles."

41 Part 3 page 6/5.1.2 LRP

CONCRETE PAD / section e.

Access ramp

Is it necessary to construct an access ramp along the entire length of the LRP concrete pad?

Yes.

Per RFP Part 3, Section 5.1.2 LRP CONCRETE PAD,

e. Access ramp: "Concrete ramps with non-slip surface on all sides of the concrete pad."

SOURCE SELECTION INFORMATION - SEE FAR 2.101 AND 3.104

D/B Construct Logistics Resupply Pad and Improve Access Road N6274225R6502 Bahn Di Lang Range, Lopburi, Thailand Amendment 0002 – Attachment 2 Summary of Changes

SUMMARY OF CHANGES

PART 3

STATEMENT OF WORK

1. Page 1 of 16, Part 3 under Section 1. PROJECT DESCRIPTION

Add the following requirement into the last paragraph:

The Base will authorize the establishment of a worker camp, a laydown area, the staging of construction machinery, and a stockyard, all located on base, to support construction activities.

Authorization is contingent upon the contractor satisfying all specified requirements and obtaining formal approval from the designated Base representative. This approval shall address, at a minimum, the proposed location, layout, and operational details of the worker camp; the deployment and use of construction machinery; management of the stockyard; identification of assigned personnel;

scheduling of operational hours; and maintenance and availability of worker records. All components and activities shall comply with applicable Base regulations.

2. Page 2 of 16, Part 3 under Section 2.1 APPLICABLE CODES AND STANDARDS

Add the following requirement:

i. Relevant standards by the Department of Rural Roads, Thailand

3. Page 3 of 16, Part 3 under Section 3.1 EXISTING SITE CONDITIONS

Change from:

External road: The LRP site is approximately 8 km north of public road No. 3333 and is currently accessible only by 4-wheel-drive vehicles.

To:

External road: The access road begins at KM 0, located approximately 9 km east of public road No. 1 at the west gate of the Artillery Center. At KM 15, the access road lies approximately 4 km north of public road No. 3333. The access road terminates at KM 21, where the LRP site is situated approximately 8 km north of public road No. 3333. The access road and the LRP site are currently accessible only by 4-wheel-drive vehicles.

4. Page 3 of 16, Part 3 under Section 3.1 EXISTING SITE CONDITIONS

Add the following requirement after the fifth paragraph:

Water source: The Huai Yai Reservoir is situated approximately 1 km west of the access road starting point (KM 0). The contractor shall conduct an investigation of nearby water sources to assess their suitability for construction-related use. Utilization of any water source shall comply with all applicable environmental requirements and local regulatory provisions.

5. Page 3 of 16, Part 3 under Section 3.1 EXISTING SITE CONDITIONS

The Contractor shall be responsible for providing the services of a geotechnical engineer to conduct any subsurface exploration, investigation, testing, and analysis that the Designer of Record deems necessary for the design and construction of the proposed building and site improvements. The geotechnical engineer shall be a registered Engineer and experienced with soil conditions in the region where the project site is located. The geotechnical engineer shall prepare a report addressing any elements of the work requiring his services. The report shall be submitted to the Contracting

Officer Representative prior to commencing any work.

To:

The Contractor shall be responsible for providing the services of a geotechnical engineer to conduct any subsurface exploration, investigation, testing, and analysis that the Designer of Record deems necessary for the design and construction of the proposed building and site improvements. The geotechnical engineer shall be a registered Civil Engineer and experienced with soil conditions in the region where the project site is located. The geotechnical engineer shall prepare a report addressing any elements of the work requiring his services. The report shall be submitted to the Contracting

Officer Representative prior to commencing any work.

6. Page 3 of 16, Part 3 under Section 3.2 SITE DEVELOPMENT

b. Conduct soils testing to determine if remedial soil importation and or compaction of existing earth condition is required and to determine viability of the structural and foundation design.

To:

b. Conduct soils testing to determine if remedial soil importation and/or compaction of existing earth condition is required and to determine viability of the structural and foundation design.

Soils testing shall be performed in accordance with the applicable standards of the Department of Highways and the Department of Rural Roads, Thailand. Test results shall be certified by an accredited third-party laboratory.

7. Pages 6 of 16, Part 3 under Section 5.1.1 CIVIL WORK, and Page 7 of 16, Part 3 under Section 5.2.1

CIVIL WORK, and Page 8 of 16, Part 3 under Section 5.3.1 CIVIL WORK

Change from:

b. Site clearance/cutting: Vegetation which does not impede/prevent construction of facilities shall be left in place for all structures. The contractor shall keep as many trees, bushes, and other vegetation as possible in place and not just clear-cut the entire area;

the intent is to minimize erosion. Vegetation shall be cleared around all structures to a distance of five meters. The contractor shall submit a site clearance plan for COR approval before removing trees.

e. The Contractor is required to retain a Geotechnical Engineer experienced and licensed in the geographic region of the project to develop geotechnical requirements to support design and construction. The Contractor's Geotechnical Engineer must perform subsurface investigation/testing as required to adequately determine all applicable geotechnical factors related to type and capacity of the project foundations which are provided by the contractor DOR's.

b. Site clearance/cutting: Vegetation that does not impede or prevent the construction of the road alignment, concrete pavements, or associated works shall be preserved. The contractor shall minimize vegetation removal to reduce erosion and environmental impact and shall avoid clear-cutting the entire area. Vegetation shall be cleared along the road alignment and concrete pavements to accommodate the carriageway, shoulders, drainage features, and necessary construction working areas. Final clearing limits shall be determined by the DOR based on site conditions. The contractor shall submit a site clearance plan for COR approval prior to the removal of any trees.

e. The Contractor is required to retain a Geotechnical Engineer, who is a licensed Civil Engineer experienced in the geographic region of the project, to develop geotechnical requirements to support design and construction. The Contractor's Geotechnical Engineer must perform subsurface investigation/testing as required to adequately determine all applicable geotechnical factors related to type and capacity of the project foundations which are provided by the contractor DOR's.

8. Pages 7 of 16, Part 3 under Section 5.2.2 ACCESS ROAD and Page 9 of 16, Part 3 under Section

5.3.2 ACCESS ROAD

Change from:

e. Drainage: Include adequate roadside drainage ditches or culverts to manage stormwater and prevent erosion or waterlogging, during rainfall.

e. Drainage: Provide roadside drainage ditches along the high side of the access road to collect and convey stormwater to reinforced concrete culverts and low-water crossings. Where warranted by site conditions, include localized ditching or outfall structures on the low side. The DOR shall determine the final location, length, and dimensions of ditches and culverts based on site-specific hydrologic analysis.

f. Shoulders: Construct shoulders on both sides of the road with a minimum width of 1.0 m each side to improve road edge stability and prevent edge deterioration. The DOR shall determine the final width, material, and construction method for shoulders based on site conditions and traffic requirements.

g. Alignment adjustments: The DOR may propose adjustments to the access road alignment to improve constructability, drainage, or reduce environmental impacts. Any proposed adjustments shall be submitted for Government review and approval prior to implementation.

h. Slope and grading: Design longitudinal and cross slopes to promote surface drainage and prevent ponding on the road.

i. Subgrade preparation: The DOR shall assess existing subgrade conditions and design measures (e.g., compaction or stabilization) to ensure the road supports heavy vehicle traffic without excessive rutting or settlement. Perform California Bearing Ratio (CBR) testing on in-situ subgrade and imported fill materials used in road construction, in accordance with the relevant codes and standards in Section 2.1, applying the most stringent requirements. Submit CBR results to the COR for review and acceptance. If subgrade strength is found to be insufficient, propose and implement soil improvement measures for Government review and acceptance.

j. Backfill and imported fill: Supply and place backfill and imported fill material as required to achieve the design subgrade, shoulders, and embankments (if required by the DOR). All fill material shall meet quality requirements specified by the DOR and be placed and compacted in accordance with applicable standards to support heavy vehicle traffic.

k. Erosion protection: Implement erosion control measures at critical locations, such as embankments, cut slopes, and drainage outfalls, as determined by site-specific conditions.

l. Transition at KM 0: Construct a tie-in to the existing road at KM 0 with grading, widening, and drainage adjustments to accommodate the design traffic loads.

9. Pages 8 of 16, Part 3 under Section 5.2.3 LOW-WATER CROSSING

Design and construct concrete-slab fords for three (3) low-water crossings. The construction type shall be reinforced concrete pavement, designed to accommodate the movement of Stryker and heavy wheeled vehicles with a maximum weight of 30 tons. The minimum requirements shall include, but no limited to, the following:

a. Location 1: KM 1+600 (approximately)

1. Width: 4 m

2. Length: 20 m

3. Thickness: To be designed by the DOR, with a minimum thickness of 250 mm.

b. Location 2: KM 4+400 (approximately)

1. Width: 4 m

2. Length: 20 m

c. Location 3: KM 14 (approximately)

1. Width: 4 m

2. Length: 50 m

Design and construct concrete-slab fords for low-water crossings along the access road. The construction type shall be reinforced concrete pavement, designed to accommodate the movement of Stryker and heavy wheeled vehicles with a maximum weight of 30 tons. The DOR shall determine the final locations and dimensions of the low-water crossings based on site conditions and hydrological assessment. The minimum requirements shall include, but are not limited to, the following:

a. Number of low-water crossings: Fourteen (14)

b. Minimum width: 4 m

c. Thickness: To be designed by the DOR, with a minimum thickness of 250 mm.

d. Estimated total combined length of crossings: 400 meters (approximate, subject to final design by the DOR)

e. Where warranted by site conditions (such as deeper crossings, drainage requirements, or expected high-water flow), the DOR shall design and include reinforced concrete drainage pipes (culverts) beneath the slab to:

1. Allow water passage during normal and high-flow conditions.

2. Divert water collected from side ditches along the uphill (high) side of the road to the low side, maintaining effective cross drainage.

3. Use culverts with a minimum internal diameter of 600 mm, or as determined by site-specific hydrologic analysis.

4. Estimated total combined length of culverts: 300 meters (for pricing purposes). The final culvert locations, lengths, and sizes shall be determined by the DOR during design development.

f. Provide backfill, embankment construction, side ditches, and associated grading as required to ensure the structural stability and functionality of the crossings.

g. Implement erosion protection measures at the edges of the concrete slab to prevent scour and undermining. The DOR may propose apron slabs, riprap, gabions, or other equivalent measures based on site conditions and hydrological assessment.

10. Pages 9 of 16, Part 3 under Section 5.3.3 LOW-WATER CROSSING

Design and construct concrete-slab ford for one (1) low-water crossing. The construction type shall be reinforced concrete pavement, designed to accommodate the movement of Stryker and heavy wheeled vehicles with a maximum weight of 30 tons. The minimum requirements shall include, but no limited to, the following:

a. Location 4: KM 19+700 (approximately)

1. Width: 6 m

2. Length: 70 m

Design and construct concrete-slab fords for low-water crossings along the access road. The construction type shall be reinforced concrete pavement, designed to accommodate the movement of Stryker and heavy wheeled vehicles with a maximum weight of 30 tons. The DOR shall determine the final locations and dimensions of the low-water crossings based on site conditions and hydrological assessment. The minimum requirements shall include, but are not limited to, the following:

a. Number of low-water crossings: Two (2)

b…