20210723 Revised No.1_RFP_72044021R00002 USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area.pdf

U.S. Agency for International Development 15/F Tung Shing Square Building 2 Ngo Quyen Street Hanoi, Vietnam

Tel: + 84-4-3935-1260 Fax: + 84-4-3935-1265 Web: vietnam.usaid.gov

ISSUING DATE : July 1, 2021 REVISED NO. 1 : July 23, 2021 QUESTION DUE DATE : July 12, 2021 at 1600 Hanoi time VIRTUAL PRE-PROPOSAL CONFERENCE : August 11, 2021 Hanoi local time SECOND QUESTION DUE DATE : August 13, 2021 Hanoi local time PROPOSAL SUBMISSION DUE DATE : September 9, 2021 at 1600 Hanoi time

Subject: (Revised No. 1) Request for Proposals (RFP) No. 72044021R00002 for USAID Treatment – Phase 1 for

Dioxin Remediation at Bien Hoa Airbase Area

Dear Prospective Offerors:

The United States Government, represented by the U.S. Agency for International Development Mission in Vietnam (USAID/Vietnam), is seeking Proposals from qualified organizations interested in providing the services as described in this solicitation. This acquisition for construction is being procured in accordance with Federal Acquisition Regulation Part 36.

USAID/Vietnam anticipates awarding one firm-fixed-price contract. The U.S. Government may award this contract without discussions. The order of magnitude of the resultant contract is between $50 to $80 million for the anticipated period of performance of approximately 5 years.

Prime Offerors under this RFP must be registered under the North American Industry Classification System (NAICS) code 562910 -- Remediation Services with business size of $22 million. In addition, Offerors must be eligible in accordance with the authorized geographic code for this procurement which is 937.

The recorded site walk and pre-proposal conference will be scheduled among prospective Offerors and will be held virtually from Vietnam. Although they are not mandatory, Offerors are encouraged to attend this virtual conference for both the recorded site walk and the pre-proposal conference. Prospective Offerors who wish to participate in this virtual conference may express their interest and provide their contact information to Suzanne H. Johnson at sjohnson@usaid.gov and Karittha Jenchiewchan at kjenchiewchan@usaid.gov no later than July 20, 2021 Hanoi local time. Apart from expressing interest to attend the virtual conference, please do not send questions relating to this conference. Detailed information on the virtual conference will be provided to interested Offerors directly via email at a later date prior to the actual virtual conference.

Questions regarding the RFP must be submitted via e-mail to the points of contact identified in Section L no later than the date and time for questions stated above. Unless otherwise notified by an amendment to this RFP, USAID will not answer questions after the deadline or by phone. Offerors must not submit questions to any other USAID staff. All questions submitted and the response thereto will be provided in writing through an amendment to the RFP which will be publicly posted on www.sam.gov.

Issuance of this solicitation in no way obligates USAID to award a contract, nor does it commit USAID to pay any cost incurred in the preparation and submission of a proposal. USAID reserves the right to reject any and all offers received. Award of a contract under this RFP is subject to the availability of funds and other internal USAID approvals.

Final award of any resultant contract cannot be made until funds have been fully appropriated, allocated, and committed through USAID’s internal procedures. USAID bears no responsibility for data errors resulting from transmission or conversion processes.

Sincerely, /s/

Suzanne H. Johnson Contracting Officer USAID/Vietnam mailto:sjohnson@usaid.gov mailto:kjenchiewchan@usaid.gov http://www.sam.gov/

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

PART I - THE SCHEDULE

SECTION B - SUPPLIES OR SERVICES AND PRICE/COSTS

B.1 PURPOSE

The purpose of this contract is to provide design-build-operate services as described in detail in Section C, Statement of Work.

B.2 TYPE OF CONTRACT

This is a Firm Fixed Price Contract payable entirely in U.S. dollars. No additional sums will be payable for any escalation in the cost of materials, equipment or labor, or because of the contractor's failure to properly estimate or accurately predict the cost or difficulty of achieving the results required. The Government will not adjust the contract price due to fluctuations in currency exchange rates. This price will include all labor, equipment, materials, other direct costs, overhead, and profit.

The price excludes all taxes and duties exempted in the Economic and Technical Agreement signed by the Government of Vietnam and the U.S. Government on June 22, 2005.

B.3 CONTRACT PRICE

The contractor shall complete all work (including furnishing all labor, material, equipment and services) required under this contract for the following firm fixed price and within the time specified in Section F.

CONTRACT LINE ITEM NOS. (CLINS) FIRM-FIXED PRICE (USD)

CLIN 1 – DESIGN TBD

CLIN 2 – CONSTRUCTION AND OPERATION TBD

Notes:

a. CLIN 1 is fully funded.

b. CLIN 2 is dependent upon issuance of CLIN 2 Notice to Proceed (NTP).

[END OF SECTION B]

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

SECTION C - STATEMENT OF WORK

C.1 TITLE

The title of the contract is “USAID Treatment for Dioxin Remediation at Bien Hoa Airbase Area – Phase I” or “Treatment - Phase I.” The abbreviation is only authorized for internal use and is not the official branding/marking of the Contract.

C.2 INTRODUCTION

The Dioxin Remediation at Bien Hoa Airbase Area Project (the Project) is one of the highest priority United States Government (USG) activities in Vietnam. This contract, Treatment - Phase I, will support the Project through provision of services as described below.

C.3 BACKGROUND

In 2016, USAID collaborated with the Government of Vietnam (GVN) to prepare a report titled "Environmental Assessment of Dioxin Contamination at Bien Hoa Airbase" (EA). Then, in a Memorandum of Intent (MOI) signed on January 23, 2018, USAID and the Vietnam Military Science Department confirmed “their mutual desire to cooperate on efforts to remediate dioxin contamination at the Bien Hoa Airbase area, Vietnam.” The EA is included as Attachment J.1.

This MOI helped launch preparation of a Masterplan for the Dioxin Remediation at Bien Hoa Airbase Area Project.

Finalized in December 2020, the Masterplan presents a comprehensive 10-year plan to remediate dioxin at the Bien Hoa Airbase area, using an approach that generally follows the remediation Alternative 4 described in the 2016 Environment Assessment. The electronic version of the Masterplan is published on the Development Experience Clearinghouse - USAID at https://pdf.usaid.gov/pdf_docs/PA00XF4J.pdf. The Masterplan divides Project activities into two five-year phases. Project Phase I activities include:

● Architect-Engineer Services contract (A&E Contractor) providing civil works design and construction oversight services (Awarded);

● Construction contracts for interim measures (Contracts Awarded) and civil works (Separate Contract in planning phase); and,

● Treatment - Phase I (This Contract).

C.4 OBJECTIVES

The objectives of the Treatment - Phase I Contract are:

● Design and build a treatment facility using thermal conductive heating (TCH) technology;

● Operate the treatment facility to reduce dioxin in 111,170 cubic meters (in original excavated bank volume) of stockpiled Airbase area soil and sediment with high dioxin concentrations equal to or greater than the treatment action level of 1,200 parts per trillion (ppt) toxic equivalency (TEQ) to a concentration below the project treatment threshold of 100 ppt TEQ; and,

● Ensure that treated soil and sediment can be used by USAID as a beneficial fill on the Airbase in formerly contaminated areas by not significantly altering any existing amounts of inorganic arsenic.

C.5 STATEMENT OF WORK

Treatment - Phase I is structured as a design-build-operate activity and requires iterative implementation in a highly collaborative manner with USAID and their GVN Project partners. Working closely with USAID and representatives of the GVN and the A&E Contractor, the Treatment - Phase I Contractor (the Contractor) must prepare designs and obtain all approvals of the designed treatment system. Following approval, the Contractor must construct and operate the treatment system to achieve the activity objectives.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

C.5.1 CLIN 1 – DESIGN OF TREATMENT SYSTEM

The Contractor must prepare a design for the ex situ treatment of soil and sediment with concentrations exceeding the treatment action level and a treated material storage area (TMSA) to safely store soil after treatment. The degree of detail conveyed by the task description and technical drawings in the design must be adequate to ensure USAID Contracting Officer Representative (COR) and GVN approval to implement the treatment, and achieve the treatment threshold of 100 ppt.

In addition to design, additional tasks include workshops, meetings, presentations, and approvals of interim deliverables. The A&E Contractor is responsible for providing facilities for workshops and meetings. The Contractor must support this effort with information and materials as needed. The Contractor is responsible for all labor, materials, equipment, supervision, adequate security protocols, permits, approvals, and incidentals necessary to perform the work.

C.5.1.1 Standards for Design and Related Construction

The Contractor must apply the following stringent standards and methods to the different elements of this CLIN. When a conflict between two standards exists, the Contractor must utilize the stricter standard. The revision of referenced standards in effect at the time of contract award must apply.

C.5.1.1.1 APPLICABLE OR RELEVANT AND APPROPRIATE REQUIREMENTS (ARARS)

Annex 5 to the Masterplan outlines applicable or relevant and appropriate requirements for Treatment - Phase I and other Project activities in the protection of human health and the environment. The Contractor must identify any changes or updates to these ARARs during the design stage and ensure that all changed or updated requirements are included/met in the proposed design.

C.5.1.1.2 USAID DIOXIN REMEDIATION OF BIEN HOA AIRBASE AREA PROJECT COMPENDIUM OF

ENGINEERING & CONSTRUCTION DESIGN MATERIAL STANDARDS (COMPENDIUM)

The Compendium (Attachment J.2) includes general and technical specifications. The Contractor is required to meet or exceed all requirements of the Compendium as related to the Scope of Work and to prepare as part of their design technical/construction specifications for the TCH treatment facility and all associated work.

C.5.1.1.3 GVN LAWS AND DECREES FOR CONSTRUCTION CONTRACT MANAGEMENT AND

CONSTRUCTION QUALITY MANAGEMENT AND MAINTENANCE

● Construction Law 50/2014/QH13 and 62/2020/QH14

● Decree 15/2021 ND-CP on Construction Project Management

● Decree 06/2021/ND-CP on quality management and maintenance of construction works

C.5.1.2 Planning Documents

Planning documentation is required to ensure activity coordination/management and the health and safety of workers, residents, and the environment. During the design stage, the Contractor must prepare and receive USAID approval for the following planning documents in accordance with the deliverable schedule. The Contractor must meet best management practices (BMPs) for implementing an activity of this size and magnitude. Additional plan requirements are included in the Compendium.

● Mobilization Plan – The Contractor must prepare a three-stage Mobilization Plan for the design, construction, and operation stages including, but not limited to, a description and schedule of: the anticipated arrival to the site of all key contractor personnel, subcontractors, equipment and materials; proposed security improvements (if any); and, set-up of air and water quality monitoring stations, temporary trailer/office, electrical, internet, phone, and sanitary facilities.

● Health and Safety Plan (HASP) – The Contractor must prepare an Activity Level HASP for its employees, oversight staff from USAID and GVN (including A&E Contractor staff), and visitors in its work area. The Activity Level HASP must be prepared in compliance with Standards for Design and Related Construction above and the

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

Site-Wide HASP, Annex 3 to the Masterplan and include a medical surveillance/blood monitoring program for dioxin. The Activity Level HASP may require more stringent health and safety measures than the Site-Wide HASP in accordance with the high-risk level of this Activity and must identify specific health and safety needs for the Activity. The Contractor must review and update the HASP as necessary in compliance with the site-wide HASP.

● Activity Management Plan (AMP) - The Treatment - Phase I Contractor must develop an Activity Management Plan that includes the following for design, construction, and operation: activity description, key issues, critical success factors, activity organization, roles, and responsibilities, scope of work, budget, activity control, quality assurance and quality control plan for all phases of the activity. The Contractor Quality Control Plan for construction will be a separate planning document. A detailed Operation and Maintenance Plan is required of the Contractor during construction for the treatment plant and all associated systems. Compendium requirements for Technical Manual apply to Contractor operated systems.

● Sampling and Analysis Plan/Quality Control Project Plan (SAP/QCPP) – The Contractor must prepare a SAP/QCPP that complies with the site-wide Sampling and Analysis Plan/Quality Assurance Project Plan (SAP/QAPP), Annex 2 to the Masterplan. The SAP/QAPP must include the Treatment - Phase I Contractor’s plan for characterizing pre-treatment, interim, and post-treatment soil/sediment for dioxin TEQ concentrations, including notification of the A&E Contractor when achievement of the Project Treatment Threshold of 100 ppt TEQ has occurred. Soil/sediment sampling protocols must conform with multi-incremental sampling (MIS) methodologies. In addition, the SAP/QAPP must include plans for any additional sampling and analysis necessary to complete the Treatment - Phase I (e.g., sampling for the wastewater/vapor treatment systems). The plan must be prepared by the Contractor as annexes to the SAP/QAPP. The SAP/QCPP must provide the means for the A&E Contractor to collect confirmatory samples of treated material from the treatment structure and/or samples after the Contractor has moved the material to the post-treatment stockpile. In addition, the SAP/QCPP must provide a means for the A&E Contractor to collect duplicate samples, as needed, from the secondary waste treatment systems.

● Waste Management Plan (WMP) – The Contractor must prepare a WMP that specifies plans for storage, characterization, and disposal of liquid and solid waste generated during Contract implementation in conformance with the above standards and the site-wide Material Disposition Approach, Annex 8 to the Masterplan. The WMP must address stockpiling, handling and transportation and disposal of all wastes derived during the work such as, construction debris, operational waste, personal protective equipment and other waste. The WMP must include plans for characterization and disposal of all waste generated by the contractor from mobilization to demobilization. The WMP must include decontamination, testing waste materials for residual dioxin contamination (USAID preference is on a volumetric basis), and before seeking COR approval for disposal.

● Environmental Mitigation and Monitoring Plan (EMMP) – The Contractor must prepare an Activity-Level EMMP in conformance with 22 Code of Federal Regulations (CFR) 216 and USAID’s Automated Directives System (ADS) 204 and any of their successors, specifically addressing the Contractor’s activities. The Activity- Level EMMP must be consistent with the approved GVN Environmental Impact Assessment (EIA) (Attachment J.3), the Site-Wide EMMP, Annex 4 to the Masterplan, the Stormwater Management Plan/Stormwater Pollution Prevention Plan (SWPPP), Annex 4 to the Masterplan, and Treatment - Phase I specifications and design documents. The EMMP must identify activities that pose potential impacts and describe the mitigation and monitoring elements to minimize the potential environmental impacts during construction and operation. During the operations stage, the EMMP must include Contractor-performed regular monitoring of the wastewater treatment system and the vapor treatment system to confirm that treated water and exhaust gas are not returning dioxin contamination, or other COCs – potential additional vapor/wastewater COCs include VOCs, SVOCs, total petroleum hydrocarbons (TPH)-gasoline range organics (GRO), TPH-diesel range organics (DRO), and arsenic (wastewater only) –to the environment. The EMMP must include a shutdown plan to mitigate exceedances. The EMMP must mitigate and monitor stormwater discharges from work areas during and post construction, until such time individual construction areas, i.e., pre-treatment storage area (PTSA), treated material storage area (TMSA), treatment plant and all other site locations disturbed during implementation, are fully demobilized and/or restored.

Any ongoing activities found to be outside the scope of the approved Regulation 216 environmental documentation shall be halted until an amendment to the documentation is submitted and written approval is received from USAID. The Contractor must review the EMMP on a quarterly basis in response to monitoring evaluation results, recommend updates to the EMMP, and submit those recommendations to USAID for review and approval. The Contractor must prepare an addendum to the EMMP to incorporate agreed upon updates.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

● Mass Balance Plan - The Contractor must develop a Mass Balance Plan with comprehensive, detailed sampling, calculation forms, and accompanying narrative that can document the fate of dioxin removed during treatment from contaminated soil and sediment with an emphasis on quantifying what is destroyed versus removed during the TCH treatment process and then in any secondary waste treatment. The Plan must include collection of sufficient data over time to document the amounts of each input and output along with the dioxin concentrations (total TEQ and 2,3,7,8-tetrachlorinated dibenzo-p-dioxin [TCDD] TEQ) to calculate the masses removed and destroyed within the treatment process and during secondary treatment of wastes. Pre- and post-treatment concentrations in soil/sediment must be determined with 30-point multi-incremental sampling (MIS). The calculation of dioxin/furan mass in the discharge from the wastewater/vapor treatment systems will require periodic sampling of the treated wastewater/vapor effluent and measurement of the volume of water/vapor discharged. The Plan must include calculation of removal or destruction efficiency calculations for vapor/wastewater abatement. The Plan must also include sampling of pre-treatment soil, wastewater discharge, and vapor exhaust for volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) as appropriate qualitatively characterize dioxin decomposition products. The Plan must be sufficient to characterize the fate of treated dioxin throughout treatment operations.

● Decontamination and Demobilization Plan – The Contractor must prepare a two-stage Decontamination and Demobilization Plan detailing the demobilization of personnel, equipment, and materials used during construction and operation stages. The Decontamination and Demobilization Plan must particularly describe how equipment which are in direct contact and/or are exposed to dioxin and/or other contaminants will be decontaminated, the decontamination criteria, the property disposition plan, the phase-out of Contractor operations, and the timetable for completing all required actions in the Decontamination and Demobilization Plan. The operation stage demobilization plan must include preparation of identified treatment plant element(s) (Section C.5.1.3 – Treatment System Design) for temporary on-site storage and transfer to USAID or its designee at the end of operations.

● Traffic Control Plan (TCP) – Contractor must prepare a Traffic Control Plan for Treatment - Phase I activities including the flow of traffic to/from and in/around the work area as well as to/from the Airbase. Treatment - Phase I Contractor employees and construction vehicles are to use approved, designated routes. Truck traffic flow is to use on-base roads and paved roadways whenever possible to minimize dust and traffic congestion. Truck drivers are to be provided with maps showing the location of the site entrances, locations of the truck staging areas, and traffic flow routes to/from the TCH treatment plant. In addition, the TCP must describe handling of soil from the PTSA and TMSA – the Treatment - Phase I Contractor and another USAID contractor may require simultaneous access to both the pre-treatment and post-treatment storage areas, working on opposite sides.

● Contractor Quality Control Plan (CQCP) – The Contractor must prepare a CQCP. The CQCP must identify personnel, procedures, controls, instructions, tests, records, and forms to be used. Detailed plan requirements are included in the Compendium.

● Submittal Register – The Contractor must prepare and submit to the COR for review and approval, a Submittal

Register, noting all information and data required, from the Contractor including design documents, planning documents, and other submittals, to be submitted to USAID. The Submittal Register must be in a format approved by the USAID COR. The Submittal Register must be coordinated with the Contractor’s schedule in accordance with FAR 52.236-15. The Submittal Register must be used as the document for controlling the submission of all Submittals throughout the period of the Contract. The Submittal Register must note:

o a description of each submittal and its contents including applicable specification identification;

o if the submittal is for information, consent or approval by the USAID COR or Contracting Officer (CO);

o the date of transmittal to the USAID;

o the date of return of the submittal from USAID;

o the status of the returned submittal, i.e., approved, approved with comments, rejected;

o the date of re-submittal (if required) to USAID.

The form and content of the Contractor’s proposed Submittal Register must be initially submitted by the Contractor for review and consent by the COR with its initial schedule. The Submittal Register must be updated bi-weekly by the Contractor and submitted to the COR.

This area is intentionally left blank.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

C.5.1.3 Requirements

C.5.1.3.1 GENERAL

All design work must be consistent with all standards and approved plans.

In conformance with USAID gender policies and guidance, the Contractor must ensure that women are provided with equal opportunity to participate in all facets of Treatment - Phase I work and account for and manage all gender-based impacts identified in the 2016 EA or during subsequent analysis.

C.5.1.3.2 CONSIDERATION FOR CLIMATE

Bien Hoa Airbase area is located within an area of Asian monsoon tropical climate; influenced by the Northeast monsoon, Southwest monsoon, and the Pacific Ocean tropic atmosphere with two distinct wet and dry seasons. The wet season lasts approximately six (6) months, from May 1 through October 31. April and November are transitional months with variable dry and rainy weather conditions.

Precipitation data was obtained for the Bien Hoa Station from the Government of Vietnam (GVN) Hydrometeorological General Bureau, Hydrometeorological Monitoring Center for the years 1994 through 2019. Rainfall during the season accounts for approximately 84 percent (%) of the annual total rainfall. Annual and seasonal rainfall is provided in Figure 1, monthly rainfall in 2, and rainy days per month (> 3mm/day) in 3.

The Contractor must consider historic weather patterns and predicted climate change related increases in the frequency and intensity of extreme weather events in their designs. Contractor must take all reasonable precautions to secure the work area against such potential damages due to rainfall.

FIGURE 1 ANNUAL AND SEASONAL RAINFALL AT BIEN HOA STATION IN YEARS 1994–2019.

This area is intentionally left blank.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

FIGURE 2 MONTHLY RAINFALL AT BIEN HOA STATION 1994-2019

FIGURE 3 RAINY DAYS PER MONTH AT BIEN HOA STATION IN YEARS 1994–2019.

C.5.1.3.3 SITE PREPARATION AND LAYOUT

Unexploded ordnance (UXO) clearance of the site will be conducted by the Ministry of National Defence (MND).

Topographic survey will be conducted by the A&E Contractor and provided to the Treatment - Phase I Contractor prior to the Notice to Proceed (NTP) for CLIN 1. The Contractor may perform soil investigations and additional surveys required to support the design. Prior to performing investigations and/or surveys, the Contractor must prepare a plan and submit for USAID approval.

In accordance with approved Activity-Level EMMP and guided by the preliminary site layout shown in Figure 4, the Contractor must design a detailed site layout of the work identifying locations of trailer/office laydown areas and equipment storage, planned erosion and recontamination control measures, air and water quality monitoring stations, site fencing, guard shacks, and other security improvements, electrical, water supply, internet, phone, and sanitary facilities, TMSA footprint, treatment plant footprint(s), and any proposed temporary access roads. The design must include site clearing, any required demolition, drainage, and leveling needed for the treatment plant and associated infrastructure, the site office and any access routes required between components of the site, the treatment facility, (Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area and the PTSA and the TMSA. The Civil Works – Phase 1 Contractor will construct the site fencing and guard shacks.

The A&E Contractor is responsible for providing security staff through an agreement with the Airbase Command (Regiment 935).

Hauling/access routes to and from the site are indicated in Figure 4. Another USAID contractor is responsible for roadwork and drainage rehabilitation, replacement, and maintenance to, from, and around the site.

The design must preserve existing concrete and asphalt paving in the Treatment - Phase I work area and include measures to prevent dioxin contamination of underlying soil and paving from treatment activities. The Treatment - Phase I Contractor must incorporate in their design the installation of HDPE liner over existing asphalt or concrete surfaces at highest risk for contamination. Consideration must be given to preventing the spread of contamination with design of structure foundations.

FIGURE 4 GENERAL LAYOUT OF THE TCH TREATMENT PLAN

C.5.1.3.4 SOIL AND SEDIMENT FOR TREATMENT

Under separate contracts, other USAID contractors will excavate unconsolidated soil and sediment for treatment by the Contractor during the Contract period of performance. Per the Masterplan, most of the material is soil rather than sediment. USAID contractors (not this Contract) will ensure that excavated soil is dewatered to a moisture content of not more than 20 percent (dry-weight basis), by mass, and excavated sediment to less than 43 percent (dry-weight basis), by mass, before another USAID contractor loads this material into the PTSA. While the PTSA will be designed and constructed by other USAID contractors (see preliminary layout in Attachment J.4), the Contractor’s design must describe how they will transport contaminated material from the PTSA for treatment, including drawings of any proposed civil works to facilitate removal.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

Dioxin concentrations for the treatment material can vary from 1,200 ppt TEQ to greater than 11,400 ppt TEQ.

Approximately half the material has concentrations less than 2,500 ppt TEQ. Approximately 20 percent has concentrations between 2,500 and 5,000 ppt TEQ, less than 20 percent between 5,000 and 10,000 ppt TEQ, and the remainder, approximately 10 percent, is greater than 10,000 ppt TEQ. All of the material greater than 5,000 ppt is from

PI-02.

In 2020, the A&E Contractor collected two soil samples from PI-02 and employed KEMRON Environmental Services to perform a thermal treatability study. This study is included in Attachment J.5.

Bank volume treatment quantities for the Contract are shown in Table 1. All material for treatment will be placed in the PTSA by another USAID contractor.

TABLE 1. BANK VOLUME TREATMENT QUANTITIES

# TASK/EVENT BANK VOLUME FOR

TREATMENT (m3)

TIMEFRAME NOTES

1 Initial material available in PTSA

50,000 No later than 25 months after NTP

Material placed in PTSA by another USAID contractor

2 Additional material available in PTSA

61,170 No later than 38 months after NTP

Material placed in PTSA by another USAID contractor

TOTAL 111,170

C.5.1.3.5 MATERIAL STORAGE AREAS

Another USAID contractor will be responsible for maintenance and construction of the PTSA, and for the repair, as needed, of the main site access road(s) to and from the PTSA and the TMSA. The same contractor will be responsible for transport of pre-treated soil/sediment to the PTSA.

The Contractor (Treatment-Phase I Contractor) will be responsible for the design, construction, and maintenance (throughout the Contract) of the TMSA, and for the construction and maintenance of any temporary access roads as required between the TCH treatment facility and the PTSA/TMSA. The location of the TMSA must be as indicated above for the site layout and must be designed to accommodate all soil and sediment following treatment, understanding that another USAID contractor will transport the treated material from the TMSA for reuse. The TMSA must have a minimum storage capacity of 79,300 cubic meters. The height cannot exceed ten (10) meters above current elevation.

The TMSA design must include measures to ensure erosion protection at all times (e.g., during periods of active hauling of material from the treatment facility or during any extended pauses in hauling). The design must also protect from comingling of stored material with native soil especially when the stored material is ultimately removed. The TMSA must be designed for positive drainage under full, partially full, and empty conditions. The Contractor must provide outfall details of TMSA drainage for coordination with the perimeter site drainage system design by the A&E Contractor. See Attachment J.6 for a preliminary drainage plan prepared by the A&E Contractor.

C.5.1.3.6 TREATMENT SYSTEM DESIGN

The Contractor must design a complete package for TCH treatment of the above-described contaminated soils and sediments within the period of performance of this contract and in compliance with all standards referenced above.

The design must include a step-by-step plan, including drawings, design basis, calculations, construction specifications, process flow diagrams, piping and instrumentation diagrams, and schedule for implementing the treatment of soils and sediment.

Major design elements must include, but are not limited to, drawings and descriptions of:

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

● TCH treatment process,

● Secondary waste treatment plant – vapor treatment system,

● Secondary waste treatment plant – wastewater treatment system,

● TMSA, and

● Site office.

The TCH treatment process must be capable of treating required annual volume and total contract volume, indicated in Table 1 above, of soil/sediment impacted by dioxins at concentrations at or above the treatment action level. The vapor and wastewater treatment systems design must ensure that all discharges will meet the approved Activity-Level EMMP requirements prior to being discharged into the environment.

USAID requires that the vapor treatment system include use of a thermal oxidizer as a primary element. The thermal oxidizer must be sized to treat the vapors resulting from the soil/sediment treatment volumes indicated in Table 1. At the end of the Treatment - Phase I Contract, the Contractor must work with the supplier of the thermal oxidizer to perform the required maintenance and provide warranty for a minimum of 10 years of operation beyond the period of performance. This will require temporary on-site storage, including utility disconnection. Preparation of equipment for temporary storage and future operation under separate contract. The thermal oxidizer must be transferred to USAID or its designee at the end of the operations stage.

The Contractor must also prepare technical/construction specifications for the treatment plant and all associated work.

The Contractor must use Construction Specification Institute (CSI) MasterFormat and divisions as appropriate in submission of all designs including, but not limited to, each of the elements described above.

C.5.1.3.7 SITE RESTORATION

The Contractor must design site restoration of work areas consistent with current land use, including replacing utilities temporarily removed or bypassed to complete the work and replacing hardscape elements such as roadways, fences, walls, and sidewalks. The design must include utilization of clean backfill, grading, stormwater controls, and vegetation as needed to provide stable grades, promote site drainage, and prevent erosion.

C.5.1.3.8 TEMPORARY CIVIL WORKS

The Contractor must prepare designs for any temporary roads or other civil works deemed necessary to complete the requirements of the Contract. Designed temporary civil works must include erosion controls and stormwater pollution prevention measures for this Activity’s construction and operation stages based on the approved Activity-Level

EMMP.

C.5.1.3.9 WATER AND POWER REQUIREMENTS

USAID anticipates that the Contractor-designed treatment plant construction and operation will require both water and power inputs to accomplish activity objectives. GVN is planning to install a 400 cubic meter per day piped water source and four transformers with capacity of 3200 kvA-22/0.4 kV per each in the area identified as “Substation and Water Supply” in the preliminary site layout for use by the Contractor. The A&E Contractor will measure water pressure and water quality following GVN provision of the water source and provide the results to the Contractor at the CLIN 1 NTP. The Contractor’s designs must include details on Contractor-implemented utility connections to these sources. GVN will only provide access to these two utility sources for the Contractor. If additional utilities are required, the Contractor must design and provide those inputs.

The Contractor design must provide calculations of power and water requirements for both the construction and operation stages highlighting any anticipated requirements that would exceed the capacity of the planned GVN on-base utility sources.

C.5.1.3.10 SUPPLEMENTAL FUEL

The Contractor is to provide calculation and justification of supplemental fuel source requirements for equipment such as the thermal oxidizer, if needed.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

C.5.1.3.11 TREATED WATER DISCHARGE REQUIREMENTS

The treated water discharge quantity from the wastewater and vapor treatment systems will vary based on multiple factors: percent water content in soil and sediment; quantity of soil or sediment being treated per batch; and the total duration of the batch treatment for heating and total boil-off. It is typical that lower treatment time will result in higher daily discharge volumes and vice-versa. The perimeter drainage channel preliminary design assumed a maximum allowed treatment discharge of 1,500 cubic meter/day. The Contractor must submit the estimated discharge flow rate and the outfall details for coordination with the perimeter site drainage system design by the A&E Contractor (see Figure 5). If the Contractor’s design discharge flow exceeds 1,500 cubic meter/day, the Contractor may be required to incorporate measures such as adjusting treatment duration or storage of excess water to decrease the treated discharge flow.

Figure 5 Perimeter Treatment Site Drainage System

C.5.1.4 Design Submittals, Review, and Approval

The Contractor must prepare and submit design drawings and technical/construction specifications for the TCH treatment facility and all associated work. The specifications must be prepared using Construction Specification Institute (CSI) Master Format and divisions as appropriate in submission of all designs.

Following award, the Contractor must submit a design basis report, drawings, and specifications at each phase as described below. Additional design requirements are included in the Compendium.

● Conceptual design corresponding to an approximate 10% level of completeness.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

● Preliminary design corresponding to an approximate 30% level of completeness. This must include a preliminary design basis report; a completed set of planned design drawings showing the layout, location, identification of equipment/components/materials, preliminary design detail, specific construction schedule(s); and a list of planned specifications subject to review and approval by the COR.

● Pre-final designs corresponding to 60% levels of completeness. These must include a detailed design basis report, detailed design drawings, and detailed specifications subject to review and approval by the COR.

● Pre-final designs corresponding to 90% levels of completeness. These must include a detailed design basis report, detailed design drawings, and detailed specifications subject to review and approval by the COR.

● Final designs, corresponding to a 100% level of completeness, and a final sealed set used for construction.

C.5.1.4.1 DESIGN BASIS REPORT

In addition to a description and rationale for the TCH treatment of dioxin-impacted soil and sediment, the design basis report must include:

● Engineering design reports;

● Calculations;

● Topographic surveys and utility locations;

● Hydraulic analysis;

● Confirmation of material properties;

● Detailed technical specifications; and,

● Operation and maintenance (O&M) plans.

C.5.1.4.2 DRAWINGS

The set of design drawings must include, at a minimum:

● Title sheet with drawing index;

● Site plan showing layout of planned treatment system;

● TCH treatment structure detail (as applicable to proposed design);

● Vapor treatment system detail;

● Wastewater treatment system detail;

● Piping and instrumentation diagrams (P&IDs) and legend;

● Utility connection detail (e.g., water, electric, etc. as applicable); and,

● Other drawings must be included or substituted, as applicable for the proposed treatment and associated work.

C.5.1.4.3 SPECIFICATIONS

A list of planned specifications must be provided with the 30% design. Detailed specifications must be submitted with the pre-final 60% design submittal. At a minimum, the specifications must include:

● Summary of Scope of Work;

● Soil management (pre-treated and post-treated soil);

● TCH treatment system(s), or equivalent;

● Piping and fittings;

● Thermal oxidizer;

● Vapor-phase activated carbon adsorption system(s), if applicable;

● Liquid-phase activated carbon adsorption system(s), if applicable;

● Gas-phase blowers, if applicable;

● Liquid pumps, if applicable; and,

● Other specifications must be included or substituted, as applicable for the proposed treatment and associated work.

C.5.1.4.4 REVIEW AND APPROVAL

The Contractor must address USAID comments from each design submittal into the subsequent design submittal. The Contractor must address approval issues through participation in workshops and meetings, preparation and/or review of technical documents, and provision of other technical inputs as required. The Contractor must allow 20 days for USAID review of each design submittal.

The Contractor must prepare materials for meetings/workshops with GVN in English and Vietnamese. Workshops with

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

GVN must be held after the 30%, 60% and 90% submittal. USAID and the A&E Contractor will lead interaction with GVN on design approval. GVN may include multiple ministry representatives in the workshops, e.g., Ministry of National Defense, Ministry of Science and Technology (MOST), etc. Following receipt of GVN and USAID comments, the Contractor must discuss the comments with USAID and work to agree on the changes to be made. The Contractor must allow 3 months for GVN review and approval of the 60% design and 2 months for GVN review and approval of the 100% designs in the schedule.

The final (100%) design will become final upon approval by the COR. All final design documents must be approved by the COR prior to construction. Note that COR approval will be contingent on GVN review and acceptance of 100% design. The Contractor must work closely with USAID, the A&E Contractor, and GVN to facilitate GVN Treatment - Phase I-related approval(s). The designs to be approved by GVN must be prepared in conformance with the GVN Decree 15/2021/ND-CP on Construction Project Management. For GVN review/approval, the following is anticipated to be required:

● “Technical – Construction Drawings Design” equals 100% design. This is the title based on the MND Phase 1 Project approval and is at the level of a GVN “Construction Drawing Design”.

● Signed by the Designer of Record, Project Manager and stamped by a company certificated construction activity capacity in Vietnam.

● 10 hard copies and 01 soft copy in English and Vietnamese for reports and bilingual for Drawings in pdf format as well as word and AutoCAD files and excel files (if any) for the draft.

The Contractor is responsible for certifying the design drawings as the Designer of Record. All submitted designs must be stamped by both a professional engineer licensed in Vietnam and one licensed in one of the United States of America. Alternatively, the Designer of Record may have their U.S. license converted to a Vietnamese practice certificate by the Ministry of Construction.

C.5.1.5 Existing Conditions

The EA and Masterplan provide a comprehensive overview of the existing conditions in the Airbase Area.

The Treatment - Phase I work area is in the airbase ZT area (approx. 69.3 Ha), located north of the Project Decision Unit ZI. This area was a former taxiway for transportation of herbicide, aircraft loading/unloading, and for moving equipment during the war. Dioxin concentrations in underlying ZT area soils are below the GVN-approved dioxin limits, except for one sub-decision unit, ZT-02B (3,440 ppt) which is outside of the Treatment - Phase I work area.

The work area designated in the preliminary site layout for the treatment plant, utilities, and site office(s) is primarily open with concrete and asphalt paved surfaces and unpaved vegetated areas. This area (identified in Figure 6) totals 65,130 m2, with 5,200 m2 of concrete, 31,600 m2 of asphalt, and 35,205 m2 of unpaved area. Asphalt thickness is approximately 8 cm. Concrete thickness is approximately 15 – 30 cm.

Most of the Airbase area is underlain by a 22 to 25-meter-thick Pleistocene sedimentary complex, consisting of clay, loam, and mixed sand and clay. Physical characteristics of soils throughout the Airbase are provided in Table 2.

Sampling was not performed at the treatment area (ZT); however, the ZI area results are adjacent to the ZT area.

TABLE 2 PHYSICAL CHARACTERISTICS OF AIRBASE SOILS

COMPOSITION/PHYSICAL CHARACTERISTICS 1

AIRBASE AREA MEDIA SAND

SILT

CLAY

GRAVE

L

MOISTUR

E

PH ORGANIC CARBON

(MG/KG)

Northeast Soil 48.4 38.7 1.0 11.9 7.4 6.11 2,100

Sediment 47.2 36.6 16.1 0.1 4.1 4.79 6,500

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

COMPOSITION/PHYSICAL CHARACTERISTICS 1

AIRBASE AREA MEDIA SAND

SILT

CLAY

GRAVE

L

MOISTUR

E

PH ORGANIC CARBON

(MG/KG)

Pacer Ivy Soil 80.2 12.6 0.2 7.0 5.1 5.40 9,100

Southwest Soil 67.3 18.3 11.7 2.7 21.0 6.95 8,800

Z1 Soil 43.4 35.5 21.1 0.0 4.4 5.21 2,700

Soil 45.2 23.6 30.7 0.5 5.4 5.03 1,900

1GVN/USAID 2016

FIGURE 6 EXISTING SITE SURFACE CONDITIONS

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

FIGURE 7 PRESENTS PHOTOGRAPHS OF CURRENT SITE CONDITIONS.

Photographs of current site conditions are included in Figure 7 above.

USAID will facilitate, through GVN, airbase access for Contractor personnel. Approval is subject to GVN regulations and security procedures.

C.5.2 CLIN 2 – CONSTRUCTION AND OPERATIONS OF TREATMENT SYSTEM

USAID will issue a separate CLIN 2 NTP that is contingent on completion of CLIN 1 Design, including 100% design approval from GVN. Following CLIN 2 NTP, the Contractor must construct the treatment plant, associated systems, TMSA, and other approved design elements and then operate the plant to treat the identified contaminated material, safely store the treated material, and then fully demobilize from the site. The Contractor must provide all materials and inputs required for construction, operation, and demobilization of the treatment system including utility services fees for water and power. If available according to GVN regulation at the time of CLIN 2 NTP, the Contractor must utilize a direct power purchase agreement for renewable energy to supply power to the treatment plant (see Second Draft Circular of Ministry of Industry and Trade regarding Pilot Program for Direct Power Purchase between Renewable Electricity Generator and Consumer at http://legal.moit.gov.vn/default.aspx?page=document_bill&do=detail&doc_id=1131&rand=637538378120264459)

C.5.2.1 Standards

The Contractor must perform all construction and operations work according to the approved designs, above standards, approved plans, and other contractual requirements.

(Revised No. 1) RFP No. 72044021R00002 for USAID Treatment – Phase 1 for Dioxin Remediation at Bien Hoa Airbase Area

C.5.2.2 General Requirements

The Contractor must implement operations and maintenance plans for all work areas until such time responsibility for the area is transferred to USAID or the end of the Contract period. In addition to all treatment and associated system components, the Contractor must maintain internal roadways between the PTSA and TMSA and the treatment structure(s).

C.5.2.3 Construction Stage Requirements

C.5.2.3.1 MOBILIZATION AND SITE SET-UP

The Contractor’s mobilization and site set-up must include, but is not limited to:

● Clearing all site areas by removing the vegetation down to the ground surface. Cleared surface vegetation must be removed from the Site and disposed of in an on-base area specified by USAID.

● Leveling and grading of laydown and equipment storage areas.

● Constructing approved erosion control measures, air and water quality monitoring stations, and site security.

● Utility clearance.

● Construction of laydown and equipment storage yards.

● Installation of decontamination stations approved in the decontamination plan.

● Construction of any other temporary civil works necessary to facilitate initiation of work.

C.5.2.3.2 DUST CONTROL

All work is to be conducted in a manner that minimizes the generation of dust. Activities that may generate dust include (but are not limited to): grading and truck loading/unloading. In addition, dry and/or windy weather conditions could contribute to dust generation and movement. The Contractor is to remain vigilant and cognizant of site conditions that could generate dust during construction and operations and employ procedures and/or dust suppression controls as necessary. Temporary methods of dust suppression include motor sweepers, chemical suppressants, water spray, or a combination of these methods. Control measures are to be defined in the EMMP.

C.5.2.3.3 EQUIPMENT ACQUISITION AND INSTALLATION

Equipment acquisition and installation must be in accordance with approved final design sealed/signed by the Contractor.

The equipment and facilities proposed by the Contractor are to be procured, transported, constructed, maintained, and tested to ensure the treatment plant is ready to receive contaminated soil for processing. Maintenance of equipment must be continuous through the duration of the Contract.

Any components remaining on site must be capable of at least ten years of continued operation beyond the duration of the Contract.

C.5.2.3.4 CONSTRUCTION DEMOBILIZATION

At the direction of the CO, after request for substantial completion and approval of substantial completion inspection, the Contractor may be authorized to demobilize identified equipment, personnel, materials and temporary facilities from the Site according to the approved demobilization and decontamination plan if there are no significant issues identified during the inspection.