72044019R00004_First_Interim_Measures_for_Bien_Hoa_Airbase_Final.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

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

Issuing Date: April 3, 2019 Question Due date: April 12, 2019 at 1600 Hanoi time Phase-one Proposal Submission Due Date:May 3, 2019 at 1600 Hanoi time Phase-two Proposal Submission Due Date: To be communicated to those that pass Phase One

Subject: Request for Proposals No. 72044019R00004 for USAID First Interim Measures 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 Phase One 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 Reguation Subpart 36.3 -- Two-Phase Design-Build Selection Procedures.

• Phase One will be evaluated in accordance with FAR 36.303-1 -- Phase One.

• Phase Two will be evaluated in accordance with FAR 36.303-2 -- Phase Two.

USAID/Vietnam anticipates awarding one firm-fixed-price contract. For Phase Two, the U.S. Government may award this contract without discussions.

The order of magnitude of the resultant contract is between $10 to $20 million for the anticipated period of performance of approximately 3 years.

Prime Offerors under this RFP must be registered under the North American Industry Classification System (NAICS) code 237990 -- Other Heavy and Civil Engineering Construction. In addition, Offerors must be eligible in accordance with the authorized geographic code for this procurement which is 937.

A site walk and pre-proposal conference will be scheduled among Offerors who are selected to move to Phase Two. The site walk will be at the Bien Hoa Airbase, Vietnam and the conference may be held either in Hanoi or Ho Chi Minh City. Detailed information will be given at a later date to those eligible for the site walk. In order to submit a Phase Two proposal, an offeror must attend both the site walk and the conference.

Questions regarding this request 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 answers to all questions will be provided in writing through an amendment to the RFP which will be publicly posted on www.fbo.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 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/

Michael Capobianco Contracting Officer USAID/Vietnam http://www.fbo.gov/

RFP No. 72044019R00004 USAID First Interim Measures 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 services as described in detail in Section C, Statement of Work.

B.2 TYPE OF CONTRACT

This is a firm fixed price contract with two contract line item numbers (CLINs) and 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.

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.

CLIN 1: TBD

CLIN 2 (Option for Additional Quantity): TBD per 1,000 m3 of soil, up to a maximum of 12,000 m3.

[END OF SECTION B]

SECTION C - STATEMENT OF WORK

C.1 TITLE

The title of the contract is “USAID First Interim Measures for Dioxin Remediation at Bien Hoa Airbase Area” or “IM1.” 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, IM1, will support the Project through provision of services as described below.

C.3 BACKGROUND

The Bien Hoa Airbase Area is one of three major dioxin contamination hotspots in Vietnam identified through studies completed in the 1990’s. Bien Hoa, along with Phu Cat, and Danang Airports, were used by the U.S.

military for the import, storage, and loading of Agent Orange between 1961 and 1971.

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). USAID prepared the EA in compliance with the requirements of Title 22 of the United States (U.S.) Code of Federal Regulations (CFR), Part 216 (https://www.usaid.gov/vietnam/documents/environmental-assessment-dioxin-contamination-bien-hoa-airbase).

The 2016 EA is the primary resource documenting characterization of dioxin contamination on and around Bien Hoa Airbase. The EA estimates the volume of dioxin-contaminated soils at the site between 408,500 (baseline estimated volume) to 495,300 cubic meters (m3). The majority, approximately 95%, of the contaminated soil is located on the airbase. The remaining is located off of the airbase.

USAID anticipates entering into several implementation mechanisms to support the overall Project completion, in addition to this Contract, including:

● Architect-Engineer Services contract (A&E Contractor) to develop a remediation masterplan for the site and provide oversight of other Project contractors.

● Construction contract(s) for other, non-treatment remedial components (Construction Contractors), based on the A&E Contractor’s plans and specifications.

● Treatment Contract(s) for soil treatment (Treatment Contractors), based on the approved remediation masterplan.

C.4 OBJECTIVES

The objectives of this Contract are:

● Excavate dioxin contaminated soil from select on-airbase locations, restore these areas using clean fill, and isolate excavated, contaminated soil in two storage areas constructed on-airbase.

● Halt the migration of dioxin contaminated soil from the on-airbase, Pacer Ivy area to other on- and off-airbase locations.

C.5 STATEMENT OF WORK

The design-build method of construction is meant to be iterative and collaborative. Working closely with USAID and representatives of the GVN, the Contractor must prepare designs, obtain all approvals to initiate construction, and, once approval is obtained, must implement construction of interim dioxin remediation measures in accordance with the following two contract line items numbers (CLINs).

https://www.usaid.gov/vietnam/documents/environmental-assessment-dioxin-contamination-bien-hoa-airbase

C.5.1 CLIN 1 – Design/Build of Interim Measures

The Contractor must furnish a design build (DB) package to design, obtain approval of the design, construct, and maintain interim measures as described below. 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 Design Phase

C.5.1.1.1 STANDARDS FOR DESIGN AND CONSTRUCTION

The Contractor must apply the following or more 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.

Construction Standards and Methods

American Concrete Institute (ACI):

• ACI 211.1 - Standard Practice for Selecting Proportions for Normal, Heavyweight and Mass Concrete.

• ACI 232.2R - Use of Fly Ash in Concrete.

• ACI 301 - Specifications for Structural Concrete for Buildings

• ACI 304.2R - Placing Concrete by Pumping Methods.

• ACI 304R - Guide for Measuring, Mixing, Transporting and Placing Concrete.

• ACI 305R - Hot Weather Concreting.

• ACI 306R - Cold Weather Concreting.

• ACI 318 - Building Code Requirements for Reinforced Concrete

• ACI 347 - Formwork for Concrete

• ACI 350 - Code Requirements for Environmental Engineering Concrete Structures and Commentary.

• ACI 350R - Concrete Sanitary Engineering Structures

• SP-66 (ACI 315) - ACI Detailing Manual

American Welding Society (AWS) D1.4 Structural Welding Code - Reinforcing Steel

• ASTM A184 – Standard Specification for Fabricated Deformed Steel Bar Mats for Concrete Reinforcement.

• ASTM A185 – Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete.

• ASTM A497 - Standard Specification for Steel Welded Wire Reinforcement, Deformed, for Concrete.

• ASTM A615 - Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement

• ASTM A706 - Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete

Reinforcement.

• ASTM A82 - Standard Specification for Steel Wire, Plain, for Concrete Reinforcement

• ASTM C1077 - Standard Practice for Laboratories Testing Concrete and Concrete Aggregates for Use in

Construction and Criteria for Laboratory Evaluation.

• ASTM C1260 - Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method).

• ASTM C138 – Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of

Concrete.

• ASTM C143 - Standard Test Method for Slump of Hydraulic-Cement Concrete

• ASTM C150 - Standard Specification for Portland Cement

• ASTM C156 - Standard Test Method for Water Retention by Liquid Membrane-Forming Curing

Compound for Concrete

• ASTM C171 - Standard Specification for Sheet Materials for Curing Concrete

• ASTM C173 - Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method.

• ASTM C192 – Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory.

• ASTM C231 - Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method.

• ASTM C260 - Standard Specification for Air-Entraining Admixtures for Concrete.

• ASTM C309 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete.

• ASTM C31 - Standard Practice for Making and Curing Concrete Test Specimens in the Field.

• ASTM C311 - Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for use in Portland Cement Concrete.

• ASTM C33 - Standard Specification for Concrete Aggregates.

• ASTM C39 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.

• ASTM C42 - Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of

Concrete.

• ASTM C494 - Standard Specification for Chemical Admixtures for Concrete.

• ASTM C618 - Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in

Concrete.

• ASTM C94 - Standard Specification for Ready-Mixed Concrete.

• ASTM D1004 - Standard Test Method for Initial Tear Resistance of Plastic Film and Sheeting.

• ASTM D123 – Standard Terminology Relating to Textiles

• ASTM D1238 - Standard Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer.

• ASTM D1505 - Standard Test Method for Density of Plastics by the Density-Gradient Technique.

• ASTM D1556 – Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method

• ASTM D1557 – Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort

• ASTM D1603 - Standard Test Method for Carbon Black in Olefin Plastics.

• ASTM D-2216 - Natural Moisture Content

• ASTM D2487 – Standard Test Method for Classification of Soils for Engineering Purposes

• ASTM D2922 – Density of Soil in Place by Nuclear Methods (Shallow Depth)

• ASTM D3017 – Test Method for Water Content of Soil in Place by Nuclear Methods (Shallow Depth)

• ASTM D3740 – Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or

Inspection of Soil and Rock as Used in Engineering Design and Construction

• ASTM D3786 – Standard Test Method for Hydraulic Bursting Strength of Knitted Goods and Nonwoven

Fabrics – Diaphragm Bursting Strength Tester Method

• ASTM D3895 - Standard Test Method for Copper-Induced Oxidative Induction Time of Polyolefins by

Thermal Analysis.

• ASTM D4218 - Test Method for Determination of Carbon Black Content in Polyethylene Compounds by the Muffle-Furnace Technique

• ASTM D422 – Test Method for Particle Size Analysis of Soils

• ASTM D4355 – Standard Test Method for UV Resistance of Geotextiles

• ASTM D4491 – Standard Test Methods for Water Permeability of Geotextiles by Permittivity

• ASTM D4533 – Standard Test Method for Trapezoid Tearing Strength of Geotextiles

• ASTM D4632 – Standard Test Method for Grab Breaking Load and Elongation of Geotextiles

• ASTM D4751 – Standard Test Method for Determining Apparent Opening Size of a Geotextile

• ASTM D4833 – Standard Test Method for Index Puncture and Resistance of Geomembranes and

Related Products

• ASTM D4833 – Standard Test Method for Index Puncture Resistance of Geotextiles, Geomembranes and

Related Products.

• ASTM D5199 - Test Method for Measuring Nominal Thickness of Geotextiles and Geomembranes

• ASTM D5261 – Standard Test Method for Mass Per Unit Area (Weight) of Fabric

• ASTM D5397 - Procedure to Perform a Single Point Notched Constant Tensile Load - Appendix (SP-

NCTL) Test

• ASTM D5596 - Test Method for Microscopic Evaluation of the Dispersion of Carbon Black in Polyolefin

Geosynthetics

• ASTM D5721 - Practice for Air-Oven Aging of Polyolefin Geomembranes

• ASTM D5885 - Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High Pressure

Differential Scanning Calorimetry

• ASTM D5994 - Test Method for Measuring the Core Thickness of Textured Geomembranes

• ASTM D638 (NSF Modified) - Standard Test Method for Tensile Properties of Plastics.

• ASTM D6938 – Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by

Nuclear Methods (Shallow Depth)

• ASTM D698 - Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard

Effort (12,400 ft-lbf/ft3 (600 kN-m/m3))

• ASTM D792 - Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by

Displacement.

• ASTM E329 - Standard Specification for Agencies Engaged in Construction Inspection and/or Testing.

Concrete Reinforcing Steel Institute (CRSI) Manual of Standard Practice

Geosynthetic Research institute (GRI) Standards:

• GM10 Specification for the Stress Crack Resistance of Geomembrane Sheet

• GM11 Accelerated Weathering of Geomembranes using a Fluorescent UVA Condensation Exposure

Devise

• GM12 Measurement of the Asperity height of Textured Geomembranes Using a Depth Gage National

Ready Mixed Concrete Association (NRMCA) Quality Control Manual, Section 3 - Certification of Ready Mixed Concrete Production Facilities.

Truck Mixer Manufacturers Bureau (TMMB) 100 - Truck Mixer, Agitator and Front Discharge Concrete Carrier Standards.

Health and Safety Standards

USG Standards

• 29 Code of Federal Regulations (CFR) 1910, OSHA Safety and Health Standard for General Industry

• 29 CFR 1904, OSHA Recording and Reporting Occupational Injuries and Illnesses

• 29 CFR 1926, OSHA Safety and Health Standards for the Construction Industry

GVN Standards

• Labor Code, 10/2012/QH13

• Government Decree on Implementation of Some Content of the Labor Code, 05/2015/ND-CP

• Law on Labor Safety and Hygiene, 84/2015/QH13

• Government Decree on Labor Safety and Hygiene, 44/2016/ND-CP

Waste Management Standards

• Title 44 Code of Federal Regulation (CFR) Chapter 1

• Government Decree on Waste and Scrap Management, 38/2015/ND-CP

• MONRE Circular on Scrap Recycle and Disposal, 34/2017/TT-BTNMT

• MONRE Circular on Hazardous Waste Management, 36/2015/TT-BTNMT

• National Technical Regulation on Hazardous Waste Thresholds, QCVN 07:2009/BTNMT

• National Technical Regulation on Industrial Wastewater, QCVN 40:2011/BTNMT

• National Technical Regulation on Domestic Wastewater, QCVN 14:2008/BTNMT

• National Technical Regulation on Industrial Gas Emission of Dust and Inorganic Substances, QCVN

19:2009/BTNMT

• National Technical Regulation on Industrial Gas Emission of Organic Substances, QCVN

20:2009/BTNMT

• Vietnam National Standard (TCVN) 9737: 2013 – Dioxin Discharge Standards in Wastewater and

• Air Waste from Dioxin Residue Treatment Activities

• National technical regulation on the allowable limits of heavy metals in soils, QCVN 03-MT:2015/BTNMT

Environmental Mitigation and Monitoring Standards

• Title 22 Code of Federal Regulations (CFR) 216

• USAID’s Automated Directives System (ADS) 204

• Law on Environmental Protection, 55/2014/QH13

• Government Decree on Environmental Protection, 19/2015/ND-CP

• National Technical Regulation on Environmental Monitoring, QCVN 24:2017/BTNMT

• National Technical Regulation on Ambient Air Quality, QCVN 05:2014/BTNMT

• National Technical Regulation on Hazardous Substances in Ambient Air, QCVN 06:2009/BTNMT

• National Technical Regulation on Noise, QCVN 26:2010/BTNMT

• National Technical Regulation on Vibration, QCVN 27:2010/BTNMT

• National Technical Regulation on Surface Water Quality, QCVN 08-MT:2015/BTNMT

• Vietnam National Standard TCVN 10843:2015 – Air Qiality Standard – Maximum Dioxin Concentration in

Ambien Air

Decontamination Standards

• ASTM D5088 - 15a, Standard Practice for Decontamination of Field Equipment Used at Waste Sites

Topographic Survey Standards

• National Standard on Technical Measuring and Processing of GPS data in Engineering Survey, TCVN 9401:2012

• National Standard on Surveying in Construction – General Requirements, TCVN 9398:2012

C.5.1.1.2 PLANS

The Contractor must prepare and receive USAID approval for the following planning documents in accordance with the deliverable schedule:

● Mobilization Plan – The Contractor must prepare a Mobilization Plan 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 a HASP for its employees and visitors to its work area(s). The HASP must be prepared in compliance with standards above. In preparing the HASP, the Contractor must comply with the principles in the US Army Corps of Engineers Safety and Health Requirements Manual (https://www.usace.army.mil/Safety-and-Occupational-Health/Safety-and- Health-Requirements-manual/). The HASP must include plans for medical surveillance for site workers that includes a blood monitoring program for dioxin. At a minimum, the dioxin blood monitoring program must include collection of a baseline sample for all workers before they begin site work and when the particular worker departs from working on the contract. The program must have annual sampling of workers working longer than one year. The program must also include plans to share blood sample results with workers confidentially via consultations with a Vietnamese medical practitioner trained to advise them regarding the results. The HASP must be reviewed and updated as necessary. The A&E Contractor will prepare a site-wide HASP during this Contract implementation and USAID will provide a copy to the Contractor. If needed, the Contractor’s HASP must be modified to be consistent and in compliance with the site-wide HASP.

● Sampling and Analysis Plan/Quality Control Project Plan (SAP/QCPP) – The Contractor must prepare a SAP/QCPP that complies with the principles of current EPA guidance on SAP ( https://www.epa.gov/quality/sampling-and-analysis-plan-guidance-and-template-v4-general-projects- 042014) and quality assurance project plans (as referenced in https://www.epa.gov/quality) and the Intergovernmental Data Quality Task Force 2012 guidance on UFP-QAPP. A confirmation sampling workplan must be included as an annex to the SAP/QCPP. Sampling protocols must achieve data quality objectives consistent with current EPA guidance (as referenced in https://www.epa.gov/quality) and the Interstate Technology & Regulatory Council (ITRC) Incremental Sampling Methodology Technical and Regulatory Guidance (https://www.itrcweb.org/ism-1/pdfs/ISM-1_021512_Final.pdf).

Samples collected using the multi-incremental sampling methodologies must be a minimum 30-point composite, and must allow meaningful comparison of data collected to excavation standards. Samples must be analyzed using U.S. EPA analytical methods by an accredited laboratory. Any additional sampling and analysis programs necessary to complete the Contract must be prepared by the Contractor https://www.usace.army.mil/Safety-and-Occupational-Health/Safety-and-Health-Requirements-manual/ https://www.usace.army.mil/Safety-and-Occupational-Health/Safety-and-Health-Requirements-manual/ https://www.epa.gov/quality/sampling-and-analysis-plan-guidance-and-template-v4-general-projects-042014 https://www.epa.gov/quality/sampling-and-analysis-plan-guidance-and-template-v4-general-projects-042014 https://www.epa.gov/quality https://www.epa.gov/quality https://www.itrcweb.org/ism-1/pdfs/ISM-1_021512_Final.pdf as annexes to the SAP/QCPP. The A&E Contractor will prepare a site-wide Sampling and Analysis Plan/Quality Assurance Project Plan (SAP/QAPP) during Contract implementation and USAID will provide a copy to the Contractor. If needed, the Contractor’s SAP/QCPP must be modified to be consistent and in compliance with the site-wide SAP/QAPP.

● Stormwater Management Plan/Stormwater Pollution Prevention Plan (SWPPP) –The Contractor must prepare a SWPPP that complies with the principles of U.S. EPA guidance (https://www3.epa.gov/npdes/pubs/sw_swppp_guide.pdf) and Clean Water Act (33 U.S.C. 1251 et seq.)

addressing the Contract’s activities. The SWPPP must address discharges during and post construction, until such time individual construction areas, i.e. decision unit excavations and all other site locations disturbed during implementation, are fully stabilized and/or restored. The A&E Contractor will prepare a site-wide SWPPP. USAID will provide a copy of this site-wide SWPPP to the Contractor. If needed, Contractor’s SWPPP must be modified to be consistent and in compliance with the site-wide SWPPP.

● Waste Management Plan (WMP) – The Contractor must prepare a WMP that specifies the proper storage, characterization, and disposal of liquid and solid waste generated during Contract implementation in conformance with the above standards. The WMP must address stockpiling, handling and transportation and disposal of all wastes derived during the work such as excavated soil, drill cuttings, groundwater, personnel protective equipment and other waste. The WMP must include plans for disposal of all construction waste generated by the contractor from mobilization to demobilization. The contractor must plan to dispose all such waste in an on-base area to be identified by USAID. The contractor must decontaminate and test all waste material for residual dioxin contamination on a volumetric basis before seeking approval from the COR to place material in the disposal area.

● Environmental Mitigation and Monitoring Plan (EMMP) – The Contractor must prepare an 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 EMMP must be consistent with the approved GVN Environmental Impact Assessment (EIA) (Attachment J. 1 Approved EIA Summary) and Contract specifications and design documents and must describe the mitigation and monitoring elements the Contractor must implement to minimize the potential for environmental impacts during construction. USAID will provide a full EIA in English in Phase 2 of the selection process. The EMMP must at minimum address turbidity control, dust control, protection of water quality, protection of air quality, and protection of natural resources, to included sample collection and analysis, and include background and other standards, monitoring data will be evaluated against.

The EMMP must include a turbidity action level of no greater than 29 nephelometric turbidity unit (TDU) above background for all wastewater and runoff water prior to discharge and a dust action level of no greater than 0.186 milligram per cubic meter (mg/m3). The Contractor must review the EMMP quarterly in response to monitoring evaluation results. The Contractor must recommend updates to the EMMP, and review those recommendations with USAID. The Contractor must prepare an addendum to the EMMP to incorporate agreed upon updates. The A&E Contractor will prepare a site-wide EMMP during this Contract implementation and USAID will provide a copy to the Contractor. If needed, Contractor’s EMMP must be modified to be consistent and in compliance with the site-wide EMMP. Although the Contract will have overall positive environmental impact through the isolation of dioxin contaminated soil, there remain potential remedial construction-related impacts. The Contractor must identify activities that pose potential impacts and incorporate green and sustainable designs and best practices into its work.

● Decontamination and Demobilization Plan – The Contractor must prepare a Decontamination and Demobilization Plan detailing the disposition of personnel, equipment, and materials used during the contract. The Decontamination and Demobilization Plan must 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 Contractor, as the engineer of record, must prepare a Construction Quality Control (CQC) Plan. The CQC plan must include, but not necessarily be limited to:

● Responsibilities and authorities of key 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.

https://www3.epa.gov/npdes/pubs/sw_swppp_guide.pdf

● 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 ensuring 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 Contract.

● Document control procedures ensuring that 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.

● Contract’s materials certification process; more specifically, process of certifying that the 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 Contracting Officer’s Representative (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 the Contracting Officer (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.5.1.1.3 DESIGN 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 the Contract 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. Total monthly rain precipitation data for the period 2013 – 2017 is presented in the EIA, Table 2.3.

Site Layout

Utilizing areas identified in Attachments J.2 and J.3, and in accordance with approved SWPPP and EMMP, the Contractor must design a general site layout of the work, identifying locations of office/laydown areas 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, excavated soil staging areas, soil storage area footprints, and any proposed temporary access roads. The contractor must locate the office/laydown area in the EA-identified decision unit (DU) PI-5.

Excavation

The Contractor must design an excavation plan for removing soil containing dioxin at concentrations exceeding excavation standards from three DUs located in the Pacer Ivy (PI) Area of Bien Hoa Airbase and identified in Table 1. Table 1 summarizes the excavation standards and estimated volumes of soil to be excavated from these DUs. The coordinates of all these DUs are included as Attachment J.4. The volumes are EA-based estimates plus an additional 20% contingency factor.

TABLE 1 ESTIMATED EXCAVATION VOLUMES

No DU Excavation Standard (ppt

TEQ)1

Estimated Excavation Volumes in Cubic Meters (m3) for Low Concentration Storage High Concentration Storage

1 PI-8 150 13,190 3,101

2 PI-10 150 10,912 4,709

3 PI-13A 300 2,893 0

ESTIMATED MAXIMUM 26,995 7,810

1. Parts per Trillion (ppt), Toxic Equivalency Factor (TEQ)

The Contractor’s excavation plan must propose initial depths and horizontal extents of excavation in each DU.

The excavation plan must also include a confirmation sampling plan in conformance with and as an annex to the SAP/QCPP to confirm achievement of the excavation standard. This confirmation sampling plan must include collection and analysis of samples from the bottom and sidewalls after excavation of the initial design volumes and a strategy for continuing excavation if achievement of the excavation standard is not confirmed.

The excavation plan must include an approach to marking the final horizontal/sidewall limits of excavation with an easily identifiable geotextile material.

The Contractor must design dewatering systems as necessary to facilitate soil excavation. Dewatering systems must include treatment as necessary to meet referenced standards for water discharge and comply with the

EMMP.

Staging

The Contractor must design a staging plan to safely store excavated soil while the Contractor confirms its dioxin concentration using a minimum 30-point composited sample on soil masses no greater than 1000 m3. After confirmation of the dioxin concentration of each soil mass, the staging plan must include the safe movement of staged soil to either the high concentration or low concentration storage area.

The Contractor must propose the location(s) of staging areas within Pacer Ivy in its plan and detail the locations in the site layout. The Contractor should avoid use of the GVN-constructed storage area in PI-13 for staging. The staging area design must ensure that soil can be readily moved in and out without risk of becoming co-mingled with existing soil in the staging area. The staging area design must also include collection and treatment of any water released from the soil during the staging period to meet referenced standards and comply with the EMMP.

High Concentration Storage Area (HCSA)

The Contractor must design a storage area to contain all excavated soil confirmed to contain dioxin at concentrations equal to or greater than 1,000 ppt. This High Concentration Storage Area (HCSA) must be sited within PI-2 but no closer than 10 m to the exterior boundary of this decision unit. and no closer than 10 m to the vetiver grass dioxin remediation test plot in PI-2. The coordinates of this test plot are included as Attachment J.5.

The HCSA design must ensure that after completion stored soil 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 soil with native soil especially when the stored soil is ultimately removed. The HCSA design must include measures to ensure erosion protection at all times, e.g. during periods of active hauling of soil from the staging area or during any extended pauses in hauling.

Low Concentration Storage Area (LCSA)

The Contractor must design a storage area to contain all excavated soil containing dioxin at concentrations less than 1,000 ppt. This Low Concentration Storage Area (LCSA) must be sited within PI-1, and/or PI-17C, i.e., the sub-decision unit C of PI-17, but no closer than 10 m to the exterior boundaries of these decision unit areas.

All other design requirements are the same as those for the HCSA.

Site Restoration, Erosion Controls and Recontamination Control

The Contractor must design site restoration of excavated and other work areas consistent with current land use, including replacing utilities temporarily removed or bypassed to complete the work and replacing hard scape element 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, prevent erosion, and prevent environmental exposure to residual dioxin contamination.

The Contractor must also design erosion controls and stormwater pollution prevention measures for the construction phase based on the approved SWPPP that will be effective until all work areas are fully stabilized and/or site restoration is complete. Full stabilization can be achieved through vegetative or non-vegetative measures.

Full vegetative stabilization means that the Contractor has established uniform, perennial vegetation (i.e., evenly distributed, without large bare areas) that provides 70 percent or more of the cover that was provided by vegetation native to local undisturbed areas. Perennial vegetation could include grasses, ground covers, trees, shrubs, etc. If prior to construction the cover on the site is 50 percent of the site, the Contractor must return the site to 35 percent cover (70 percent of 50 percent). Final non-vegetative stabilization means that non-vegetative stabilization methods have been implemented to provide effective cover for exposed portions of the site.

Examples include, but are not limited to, rip-rap, gravel, gabions, and geotextiles.

The Contractor must also design recontamination controls to prevent migration of contaminated soil from the Pacer Ivy Area, including PI-1, PI-2, PI-3, PI-4, PI-5, PI-7, PI-9, PI-11, PI-17, PI-19, PI-20, PI-13, and PI-14, to DUs excavated and restored as part of the Contract. This design must ensure robust isolation of contaminated soil in PI-2, the most highly contaminated portion of Pacer Ivy and the location of the HCSA.

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.

C.5.1.1.4 DESIGN REVIEW AND APPROVAL

The Contractor must use Construction Specification Institute (CSI) format 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.

● Topographic surveys and utility locations.

● Hydraulic analysis.

● Traffic controls.

● Confirmation of backfill material properties.

● 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 COR. All final design documents must be approved by the COR prior to construction. Note that COR approval will be contingent on MND 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 and MND to facilitate GVN IM1-related approval(s). 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.

C.5.1.1.5 EXISTING CONDITIONS

The IM1 contract work areas (the Site) are shown on Attachments J.2 and J.3. Attachment J.2 shows the airbase locations of Pacer Ivy, the backfill borrrow source area, and the hauling road from Pacer Ivy to the borrow source area. Attachment J.3 shows a close-up of Pacer Ivy with that area’s DUs including those specified for excavation, storage areas, and office/laydown area. The EA provides the most comprehensive overview of the existing conditions in the Site. However subsequent to completion of the EA, GVN has completed additional construction in the area including road improvements, drainage improvements, several interim protection measures (most significantly two rock filled, pervious cofferdams at the southern boundary of the EA DU PI-8 and the northern boundary of DU PI-9 to inhibit migration of sediment into the drainage channel outflow to the Dong Nai River), and construction of a geotextile lined storage area in portions DU PI-13. Design drawings for this storage area (in Vietnamese) are in Attachment J.6.

The GVN will provide access to an electrical power source and piped water within the office/laydown area in PI-5.

The Contractor is responsible for installing all service connections. USAID will facilitate through GVN site access for Contractor personnel.

C.5.1.1.6 SUBCONTRACTOR LICENSES

All subcontractors handling contaminated soil must have a Hazardous Waste Disposal License issued by Vietnam Ministry of Natural Resources and Environment (MONRE).

C.5.1.2 Construction Phase

C.5.1.2.1 STANDARDS

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

C.5.1.2.3 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.

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 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 in the on-base area specified by USAID. In excavation areas, stumps and roots must be removed as part of the excavation, mulched, and mixed in with the excavated contaminated soil.

● 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.

Excavation

The Contractor must excavate soil containing dioxin at concentrations exceeding standards according to the approved excavation plan up to a total of 38,517 cubic meters. The quantity must be measured as bank volume, based on comparison of post-excavation topographic surveys with the design stage topographic survey. The Contractor must halt excavation after 37,477 cubic meters (80% of the estimated volume) has been excavated and seek approval from USAID to continue excavation.

Excavation must be accomplished by methods which preserve the undisturbed state of the subgrade soils.

The Contractor must also implement the approved confirmation sampling plan. The Contractor is responsible for the proper management of investigation-derived wastes in conformance with the approved Waste Management Plan. The Contractor must summarize results of the data collection and evaluation activities in written data reports, stamped by an engineering or geoscience professional, and submitted to the COR. Laboratory data must be provided in electronic data deliverable (EDD) format that complies with the principles in U.S. EPA Electronic Data Deliverable (EDD) Comprehensive Specification Manual 4.0 and maintained by the Contractor in a secure internet-based electronic database readily accessible to the USAID COR and CO at all times. Data must, at a minimum, include sample location and type, chain of custody, laboratory results, and quality assurance information. The Contractor must validate each laboratory data report.

Staging

After excavation, the Contractor must implement the staging plan to confirm segregation of high and low concentration soil through 30-point composited sample on soil masses no greater than 1000 m3 before final placement in the relevant storage area.

High and Low Concentration Storage Areas

The Contractor must construct these two storage areas according to the approved designs. The Contractor must sequence construction of the storage areas and placement of soil, to minimize erosion risks. The storage areas must be completely winterized prior to the onset of the wet season, approximately May 1 through December 1.

Winterization measures must include installation of caps over dioxin contaminated soil, fully operational stormwater run-on and run-off control measures, and implementation of the SWPPP monitoring program.

Site Restoration, Erosion and Recontamination Control

The Contractor must restore excavation and other work areas and install erosion and recontamination controls according to approved designs.

Backfill shall be placed in layers having a maximum thickness of 0.3 meters measured before compaction and shall be compacted to 90 percent of the modified Proctor maximum dry density. Before bringing to the site for utilization in Site restoration or recontamination control, the Contractor must confirm backfill meets the following criteria:

● Clean, naturally occurring soil which must not contain granite blocks, broken concrete, masonry rubble, asphalt pavement, or any material larger than 150 mm in any dimension.

● Have dioxin concentrations below 21.5 ppt Toxic Equivalency Factor (TEQ).

● Have a plasticity index of less than 15, relative compactions normalized between 88 – 93% to prevent erosion and enable replanting.

● Conform to the following gradation limits:

Sieve Size Percent Finer by Weight No. 40 75 max.

No. 200 30 max.

● Conform to all soil quality standards referenced above.

Substantial Completion

"Substantial Completion" means the stage in the progress of the work as determined and certified by the 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 Storage Areas.

● Completion of site restoration and recontamination control activities.

● Submission of final certified site surveys.

● Submission of owner’s O&M manuals.

● 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.

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.

Demobilization

At the direction of the CO, after substantial completion inspection the Contractor may be authorized to demobilize all 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.

Final Completion and Acceptance

Definitions

(a) "Final completion and acceptance" means the stage in the progress of the work as determined by the Contracting Officer and confirmed in writing to the Contractor, on which all work required under the contract has been completed in a satisfactory manner, subject to the discovery of defects after final completion, and except for items specifically excluded in the notice of final acceptance.

(b) The "date of final completion and acceptance" means the date…