20210310 Draft Treatment I SOW for RFI.pdf

RFI No. 72044021R00002 USAID/Vietnam Treatment for Dioxin Remediation at the Bien Hoa Airbase Area – Phase I (Treatment I)

Section C - Statement of Work

C.1 Title The title of the contract is “USAID/Vietnam Treatment for Dioxin Remediation at the Bien Hoa Airbase Area – Phase I” or “Treatment I.”

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 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.”

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/PA00X6FB.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 Design); and,

● Treatment I (This Contract).

C.4 Objectives The objectives of the Treatment I Contract are:

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

● Operate the treatment facility to reduce dioxin in 150,000 cubic meters of stockpiled airbase area soil and sediment with high dioxin concentrations equal to or greater than 1,200 parts per trillion (ppt) toxic equivalency (TEQ) to a concentration below 100 ppt TEQ; and,

● Maximize the ability to use treated soil and sediment as beneficial fill on the Airbase in formerly contaminated areas.

C.5 Statement of Work Treatment 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 Contractor must prepare designs, obtain all approvals to initiate construction and operation, and, once approval is obtained, must implement construction and operation of the designed treatment system, in accordance with the following two contract line items numbers (CLINs).

https://pdf.usaid.gov/pdf_docs/PA00X6FB.pdf https://pdf.usaid.gov/pdf_docs/PA00X6FB.pdf

C.5.1 CLIN 1 – Design of Treatment System C.5.2 CLIN 2 – Construction and Operations

C.5.1 - CLIN 1 – Design of Treatment System The Contractor must furnish a treatment system design package and work with USAID to gain GVN Project partner approval as described below. Planning documentation is required to ensure activity coordination/management and the health and safety of workers, residents, and the environment. In addition to design, additional tasks include meetings, presentations, and approvals of interim deliverables. 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 shall apply.

● Applicable or Relevant and Appropriate Requirements (ARARs) Annex 5 to the Masterplan outlines applicable or relevant and appropriate requirements for Treatment 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.

● USAID Dioxin Remediation of Bien Hoa Airbase Area Project Compendium of

Engineering & Construction Design Material Standards (Compendium) The Compendium includes general and technical specifications, excluding those specific to soil and sediment treatment processes and associated work. The Contractor is required to meet or exceed all requirements of the Compendium as related to the Work (Final Draft is attached to this RFI) .

● 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 Plans During the design stage, the Contractor must prepare and receive USAID approval for the following planning documents in accordance with the deliverable schedule. The Treatment – Phase 1 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 straff), and visitors in its work area. The Activity Level HASP must be prepared in compliance with standards above and the 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. Plan requirements include medical surveillance/blood monitoring program for dioxin. The Contractor must review and update the HASP as necessary in compliance with the site-wide HASP.

● Risk Identification and Management Plan (RMP) - The Contractor must develop an RMP detailing risk identification and risk responses for the proposed remediation activities. The RMP must include regular risk monitoring throughout the life of the activity, and shall include the addition, deletion, and modification of risks as the activity progresses. At a minimum, the RMP must conform with the existing Masterplan RMP and apply management and monitoring requirements that are not already defined. The Treatment I RMP must include an acknowledgement letter signed by the Contractor indicating compliance with the Masterplan

RMP.

● 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. A treatment completion confirmation sampling plan and any additional sampling and analysis programs necessary to complete the Treatment I must be provided. The plan must be prepared by the Contractor as annexes to the SAP/QCPP. The SAP/QCPP must include Contractor plans for monitoring treatment progress and notifying the A&E Bien Hoa Contractor when achievement of the Project Treatment Threshold of 100 ppt TEQ has occurred. The SAP/QCPP must provide the means for the A&E Bien Contractor to collect confirmatory samples of treated material from the treatment structure and/or samples after the Treatment I Contractor has moved the material to the post-treatment stockpile.

● 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, 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 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) (attached), 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 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 Treatment I 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, 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 areas, post-treatment storage area, treatment plant and all other site locations disturbed during implementation, are fully demobilized and/or restored. The Contractor must review the EMMP quarterly 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.

● Mass Balance Plan - The Contractor must develop and implement a Mass Balance Plan with comprehensive, detailed sampling, calculation forms, and accompanying narrative that documents 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 Mass Balance Plan must quantify dioxin contamination and document the major decomposition by-products.

● 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 (see below) treatment plant elements for temporary on-site storage and transfer to USAID or its designee at the end of operations.

The Contractor, as the engineer of record, must prepare a Construction Quality Control (CQC) Plan.

The CQC plan must include (see Compendium of Standards for additional requirements), but not necessarily be limited to:

● Responsibilities and authorities of key Treatment I contract personnel, contractors, and representatives of organizations involved in the construction management and oversight.

● Description of inspection activities, including a description of the type and frequency of tests and observations used to monitor and verify compliance with design requirements, customary construction practices, and safety codes, etc.

● Description of construction monitoring requirements, objectives, and sampling requirements.

● Documentation requirements for reporting construction QC activities, including daily summary reports, inspection data sheets, and filing system organization.

● Procedures, work instructions and drawings as guidance to perform activities and processes consistently.

● Documented process by which the specified quality requirements for materials and workmanship are met.

● Record control procedures that ensure the maintenance of all records and files for the inspection and testing of all materials and equipment as well as all the daily inspection records of the construction activities related to the Treatment I contract.

● Document control procedures that ensure documents, including changes, are: (1) reviewed for adequacy, (2) approved for release by authorized personnel, and (3) distributed for use where the prescribed activity is performed.

● Process control procedures including approved material sources, quality workmanship standards, quality control requirements, acceptance criteria and inspection and testing to control construction processes that affect the specified materials and workmanship quality.

● Procedures to identify, segregate, and track nonconforming work and materials until a resolution is made, to prevent their inadvertent use or installation.

● Control of inspection, measuring, and testing equipment procedures ensuring that inspection, measuring, and testing equipment used for contract acceptance are properly identified, controlled, and calibrated by qualified technicians at specific frequencies to maintain accuracy within required tolerances.

● Treatment I materials certification process that certifies results of tests performed on acceptance samples indicate the materials incorporated in the construction work and the construction operations controlled by sampling and testing were in conformity with the authorized plans and specifications.

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, Working Plans and other Submittals, to be submitted to the 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 (per 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:

● a description of each Submittal and its contents including applicable specification identification;

● if the Submittal is for information, consent or approval by the USAID COR or CO;

● the date of transmittal to the USAID;

● the date of return of the Submittal from USAID;

● the status of the returned Submittal, i.e. approved, approved with comments, rejected;

● 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.

C.5.1.3 Requirements

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 I work and account for and manage all gender-based impacts identified in the 2016 EA or during subsequent analysis.

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. 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.

Site Layout In accordance with approved Activity-Level EMMP and guided by the preliminary site layout below, the Contractor must design a detailed site layout of the work identifying locations of office/laydown areas and equipment storage, planned erosion and recontamination control measures, air and water quality monitoring stations, site fencing and other security improvements, trailer/office, electrical, internet, phone, and sanitary facilities, treated material storage area footprint, treatment plant footprint, and any proposed temporary access roads. The design must preserve existing concrete and asphalt paving in the Treatment I work area and include measures to prevent dioxin contamination of underlying soil and paving from treatment activities. 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 the treatment facility and the pre- and post-treatment storage areas.

Soil and Sediment for Treatment Through a separate civil works contract, USAID will excavate 150,000 cubic meters of unconsolidated soil and sediment from the following decision units for treatment by the Treatment I Contractor under this activity: MND-A43, DONRE-A1, DONRE-A2, PI-08, PI-10, PI-12, PI-15, ZT- 02, SW-01, SW-02, SW-03, NE-07, and PI-02. Most of these decision units are identified in the Masterplan as soil rather than sediment areas. USAID will ensure that excavated soil is dewatered to a moisture content of not more than 20 percent, by mass, and excavated sediment to 43 percent, by mass, before the civil works contractor loads this material into the Pre-Treatment Storage Area.

USAID will not require any particular compaction of the material loaded in the Pre-Treatment Storage Area by the civil works contractor, but some heavy equipment operation will compact the material during loading. The Treatment I Contractor’s design must describe how the Contractor will remove contaminated material from the Pre-Treatment Storage Area for treatment, including drawings of any proposed civil works to facilitate removal.

Post-Treatment Material Storage Area The Contractor must design a post-treatment storage area to contain all soil and sediment after treatment. This Treated Material Storage Area (TMSA) must be sited in the area indicated in the above site layout. The height cannot exceed ten (10) meters above current elevation.

The PTMSA design must ensure that after completion, stored material will be effectively protected from erosion if stored in that location for up to 5 years, provided proper maintenance. The design must also protect from comingling of stored material with native soil especially when the stored material is ultimately removed. The PTSMA design must include measures to ensure erosion protection at all times, e.g. during periods of active hauling of soil from the treatment plant or during any extended pauses in hauling.

Treatment System 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, i.e., five years, and in compliance with all standards referenced above.

The design must include drawings and descriptions of any pretreatment facilities and activities. The design must also include drawings and descriptions of secondary waste treatment plant elements that will collect and treat all gases and liquids generated from the TCH primary treatment process.

The gas and liquid treatment plant design must ensure that all vapor and wastewater emissions will meet the approved Activity-Level EMMP requirements prior to being discharged into the environment. USAID requires the gas and liquid treatment plant design to include use of a thermal oxidizer as a primary element. The thermal oxidizer must be sized for an annual treatment capacity of 55,000 m3 (expected Year 4 volume plus 10 percent) and be capable of continued operation for 5 years beyond the duration of the Treatment - Phase 1 Contract. This element must be designed to be temporarily stored on-site and transferred to USAID or its designee at the end of the operations stage and must be capable of an additional ten years of operation.

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 clean backfill as needed to provide stable grades, promote site drainage, and prevent erosion.

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.

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 Contractor designs must include details on Contractor-implemented utility connections to these sources and utility demand calculations for both the construction and operation stages. GVN will only provide access to these two utility sources for the Contractor. If additional utilities are required, the Contractor must provide those inputs.

C.5.1.4 Design Review and Approval The Contractor must prepare and submit design drawings and 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 each of the elements described above for USAID review at phases as described below.

● Preliminary design corresponding to an approximate 30% level of completeness. These design documents must include drawings showing the layout, location, and specific construction schedule(s). It must include, as applicable, a listing of equipment, components, and materials.

● Pre-final designs corresponding to 60% and 90% levels of completeness respectively.

These design documents must include a detailed design report, design drawings, and specifications.

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

Pre-final and final designs must also include:

● Engineering design reports.

● Calculations.

● Topographic surveys and utility locations.

● Hydraulic analysis.

● Traffic controls.

● Detailed technical specifications.

● Operation and maintenance (O&M) plans.

The Contractor must address USAID comments from each design submittal into the subsequent design submittal. Following receipt of USAID comments, the Contractor must discuss the comments with USAID and work to agree on the changes to be made. The final (100%) design will become final upon approval by the Contracting Officer’s Representative (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 the designs. All final designs must be stamped by a professional engineer licensed in Vietnam and licensed in one of the United States of America.

The Contractor must work closely with USAID, the A&E Contractor, and GVN to facilitate GVN Treatment I-related approval(s). The design to be approved by GVN must be prepared in conformation to the GVN Decree 59 on Construction Project Management, 59/2015/ND-CP. For GVN review, the following is anticipated to be required:

● “Technical – Construction drawings Design” equal to 100% design.

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

● 05 hard copies and 01 soft copy English and Vietnamese Reports and Bilingual Drawings in pdf format as well as word and AutoCAD files and excel files (if any) for the final version.

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. GVN may include other ministry representatives in the workshops, i.e., Ministry of Science and Technology.

C.5.1.5 Existing Conditions The EA and Masterplan provide a comprehensive overview of the existing conditions in the Airbase Area.

The Treatment 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 I work area.

The work area designated in the preliminary site layout for the treatment plant, utilities, and site offices is primarily open with concrete and asphalt paved surfaces and unpaved vegetated areas.

This area (identified in the map below) totals 41,600 m2, with 5,200 m2 of concrete, 31,600 m2 of asphalt, and 4,800 m2 of unpaved area. Asphalt thickness is approximately 10 cm. Concrete thickness is approximately 15 – 50 cm.

USAID through its GVN Project partners will provide the Contractor with access to two electrical substations (see details below) and a 200 cubic meter/day capacity piped water source in the work area. The Contractor is responsible for designing and installing all service connections.

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 The Contractor must construct the treatment plant, treated material storage, and other approved design elements and then operate the plant to treat the identified contaminated material, safely store the treated material, and then demobilize from the site.

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.

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.

C.5.2.3 Construction Stage Requirements

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

● Clearing all site areas to be excavated or used as office/laydown area, staging areas, storage areas, and the Site 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. In non-excavation areas, clearing and grubbing must be performed to remove the vegetation, stumps, and roots and the material must be removed from the Site and disposed of in the 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.

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.

Components remaining on site must be capable of ten years of continued operation beyond the duration of the Contract.

Substantial Completion "Substantial Completion" means the stage in the progress of the work as determined and certified by the Contracting Officer (CO) in writing to the Contractor, on which the work (or a portion designated by USAID) is sufficiently complete and satisfactory. The activities that are required to be complete to achieve Substantial Completion are provided below:

● Completion of construction of treated material storage area.

● Completion of treatment plant.

● Submission of as-built drawings for all construction.

Substantial completion means that the work is essentially complete and may be used for the purpose for which it is intended, and only minor items such as touch-up, adjustments, and minor replacements or installations remain to be completed or corrected which do not interfere with the intended utilization of the work, and can be completed or corrected within the time period required for final acceptance.

The "date of substantial completion" means the date determined by the CO as of which substantial completion of the work has been achieved.

Upon notice by the Contractor that the work is substantially complete (a Request for Substantial Completion) and an inspection by the Contracting Officer or an authorized Government representative (including any required tests), the Contracting Officer shall furnish the Contractor a

Certificate of Substantial Completion, accompanied by the Schedule of Defects listing items of work remaining to be performed, completed or corrected before final completion and acceptance. Failure of the Contracting Officer to list any item of work shall not relieve the Contractor of responsibility for complying with the terms of the contract. The Government's possession or use upon substantial completion shall not be deemed an acceptance of any work under the contract.

Demobilization At the direction of the CO, after 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. If the Contractor is not authorized to demobilize after the substantial completion inspection, the Contractor must not demobilize until after final acceptance.

C.5.2.4 Operation Stage Requirements

Mass Balance Calculation The Contractor must conduct a quantitative mass balance study to document the fate of dioxin/furans as a result of the treatment process for approximately 10% of the material treated. The Contractor must collect sufficient data over time documenting the amounts of each input and output along with the dioxin/furan concentrations (total TEQ and TCDD) 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 MIS. The calculation of dioxin/furan mass in the discharge from the wastewater/vapor treatment system must have periodic sampling of the treated wastewater/vapor effluent and measurement of the volume of water/vapor discharged. The Contractor must also perform removal or destruction efficiency calculations for vapor/wastewater abatement. Mass balance calculations for dioxins/furans will be performed based on individual dioxins/furans, and based on 2,3,7,8-tetrachlorinated dibenzo-p-dioxin (TCDD) TEQ. Pre-treatment soil, wastewater discharge, and vapor exhaust must also be sampled for selected volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) chosen by the Contractor that can be used to qualitatively characterize potential dioxin/furan decomposition products.

Pre-Treatment Storage Area Another USAID contractor will construct this pre-treatment storage area and place contaminated material in it. The Contractor must utilize this storage area during operations removing contaminated material as needed for treatment operations. The Contractor must sequence removal of contaminated material, to minimize erosion risks. After removal of any material, the Contractor must ensure that the protective cover, installed by the other USAID contractor, is refitted and stormwater run-on and run-off control measures are maintained.

Subcontractor Licenses All subcontractors handling contaminated material, i.e., contaminated soil and sediment prior to treatment and contaminated waste material, must have a Hazardous Waste Disposal License issued by the Vietnam Ministry of Natural Resources and Environment (MONRE).

Demobilization At the direction of the CO, after substantial completion inspection the Contractor may be authorized to demobilize 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. If the Contractor is not authorized to demobilize after the substantial completion inspection, the Contractor must not demobilize until after final acceptance.

Substantial Completion "Substantial Completion" means the stage in the progress of the work as determined and certified by the Contracting Officer in writing to the Contractor, on which the work (or a portion designated by USAID) is sufficiently complete and satisfactory. The activities that are required to be complete to achieve Substantial Completion are provided below:

● Completion of soil and sediment treatment operations.

● Completion of site restoration.

● Submission of owner’s O&M manuals for thermal oxidizer.

Substantial completion means that the work is essentially complete and may be used for the purpose for which it is intended, and only minor items such as touch-up, adjustments, and minor replacements or installations remain to be completed or corrected which do not interfere with the intended utilization of the work, and can be completed or corrected within the time period required for final acceptance.

The "date of substantial completion" means the date determined by the CO as of which substantial completion of the work has been achieved.

The Government shall have the right to take possession of and use the work upon substantial completion. Upon notice by the Contractor that the work is substantially complete (a Request for Substantial Completion) and an inspection by the Contracting Officer or an authorized Government representative (including any required tests), the Contracting Officer shall furnish the Contractor a Certificate of Substantial Completion, accompanied by the Schedule of Defects listing items of work remaining to be performed, completed or corrected before final completion and acceptance. Failure of the Contracting Officer to list any item of work shall not relieve the Contractor of responsibility for complying with the terms of the contract. The Government's possession or use upon substantial completion shall not be deemed an acceptance of any work under the contract.

Final Acceptance If the Contracting Officer is satisfied that the work under the contract is complete (with the exception of continuing obligations), the Contracting Officer shall issue to the Contractor a notice of final acceptance and make final payment upon:

● Satisfactory completion of all required tests,

● A final inspection that all items by the Contracting Officer listed in the Schedule of Defects have been completed or corrected and that the work is finally complete (subject to the discovery of defects after final completion), and

● Submittal by the Contractor of all documents and other items required upon completion of the work, including a final request for payment (Request for Final Acceptance).

C.5.3 Submittals

Submittal Procedures All submittals must be in accordance with the Compendium, Section 01 33 00 – Submittal Procedures.

Submittal Review Time The COR will return all Contractor Submittals with its comments, approval, rejection or recommendations no later than fifteen (15) calendar days after receipt of a complete submission package.

Submittals by the Contractor shall be made sufficiently in advance of the start of the affected work, to allow time for review by the COR and correction by the Contractor without delaying the work.

All time required for preparation of Submittals and review by the COR, shall be taken into consideration by the Contractor when preparing the schedule for the works.

Project Management Project management activities the Contractor must perform include, but are not limited to:

● Develop and submit to the CO for approval a baseline schedule in accordance with Federal Acquisition Regulation (FAR) 52.236-15 and that utilizes the critical path method capturing all activities planned for Treatment I implementation. The Contractor must prepare the schedule using Microsoft Project Professional. The Contractor must track progress and deviations against the baseline utilizing the scheduling software. The schedule must be updated at least weekly.

● Develop and submit to the Contracting Officer (CO) a schedule of values to serve as a basis for progress payments.

The Contractor must participate in weekly Project status meetings (via phone) with USAID and quarterly meetings in Hanoi or on-site with USAID and GVN.

Monthly Reports The Contractor must prepare concise monthly reports. The monthly report must include, but not be limited to:

● Explanation of work completed within the reporting period.

● Comparison of progress against the baseline schedule.

● Summary analysis of technical data collected.

Quarterly Reports The Contractor must submit quarterly reports. The quarterly report submitted after September 30th must serve as an annual report summarizing the previous quarters of the year. The quarterly report must include, but not be limited to:

● Summary of progress on implementation tasks.

● Issues and constraints affecting or potentially affecting implementation.

● Summary of how issues and constraints of the prior quarter were addressed in the present quarter.

● Look ahead for work planned for the upcoming quarter.

● Gender related actions.

Final Report The Contractor must provide a final report. This report must assess Treatment I implementation and provide details on, but not limited to the following elements:

● Description of tasks undertaken and completed;

● Details on any impediments faced in implementing the activity;

● Lessons learned in implementing the activity and best practices that emerged.

Daily Construction/Operations and Oversight Activities The Contractor must provide day-to-day management and oversight of its operations, to include but not be limited to:

● Participate in daily calls with the COR to review work status.

● Keep comprehensive records, in electronic format that will become the property of USAID upon completion of work or termination of Contract.

● Prepare daily construction progress reports and photos. Each photo must be identified as to location, activity/subject matter, date, and time.

● Advise the COR and CO of actual or potential problems (technical, legal, political, or otherwise) that may affect project implementation or increase risks to USAID.

Site Surveys The Contractor must provide certified survey work required for any civil works. The Contractor must retain the services of a professional land surveyor licensed for Dong Nai, Vietnam to perform all surveying. The required Site Surveys include, but are not limited to:

● Certified topographic surveys to allow measurement of excavated volumes of contaminated soil and thickness of backfill layers.

● Certified topographic map surveys performed at the following stages of the removal of contaminated soils and sediments: (a) immediately following clearing and prior to starting excavation of contaminated soils and sediments, (b) immediately following excavation of 80% of the estimated volume, (c) immediately following completion of excavation of contaminated soils/sediments as determined by confirmation sampling and approved by USAID, and (d) immediately following completion of backfilling of excavations as part of site restoration.

● Certified “As-Built” Survey of the surface and subsurface structures (including topography) installed by the Contractor after completion.

The surveys must meet the following criteria:

● Must be tied to VN-2000 Coordinate System

● Reproducible plot of 1:500

● Produced at national map accuracy standards for 1:500 scale maps with contour intervals no greater than 25 cm (0.25 m) to provide adequate detail to complete all designs to applicable standards.

● All certified drawings must be prepared using AutoCAD 2017 or later.