Demo_Work_Plan_USFWS_BIA_.pdf

DEMOLITION WORK PLAN

FORMER BIA BETHEL HEADQUARTERS

BETHEL, ALASKA

JULY 2020

Prepared For:

U.S. Fish and Wildlife Service Region 7 – Alaska

Yukon Delta National Wildlife Refuge (NWR) Headquarters Building, Bethel, AK.

Prepared By:

Ahtna Global, LLC

110 West 38th Avenue, Suite 200J Anchorage, Alaska 99503

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Former BIA Headquarters Demolition Work Plan USFWS

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APPROVAL PAGE

The following work plan for the demolition and remedial action activities at the former Bureau of Indian Affairs Bethel Headquarters has been prepared by Ahtna Global, LLC. The following people have reviewed and approved this work plan.

Ron DesGranges

Program Manager

Robert Jewett

Project Engineer

Matt White

Certified Industrial Hygienist

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TABLE OF CONTENTS

APPROVAL PAGE .................................................................................................................... III ACRONYMS AND ABBREVIATIONS ................................................................................. VII

1.0 INTRODUCTION

Background Project Objectives

1.2.1 Buildings Description

2.0 PROGRAM ORGANIZATION AND RESPONSIBILITIES

Certification Licensure Personnel Organization and Responsibilities

2.3.1 Nathan Stephens, Ahtna Project Manager (PM)

2.3.2 Ward McDonnel, Ahtna Site Superintendent - Abatement (SS)

2.3.3 Marty Walker, Ahtna Site Superintendent - Demolition (SS)

2.3.4 Thamen Barry, Ahtna Site Safety and Health Officer (SSHO)

2.3.5 Thamen Barry, Contractor Quality Control System Manager

2.3.6 Matt White, Ahtna PE CIH

2.3.7 Subcontractors/Vendors

Training

3.0 HEALTH AND SAFETY

Daily Housekeeping Minimum Personal Protective Equipment (PPE) Site Specific Safety and Health Plan (SSHP)

4.0 QUALITY ASSURANCE

Three Phase control System

4.1.1 Preparatory Phase

4.1.2 Initial Phase

4.1.3 Follow-Up Phase

Definable Features of Work Reporting

4.3.1 Submittals

4.3.2 Scheduling

4.3.3 Documentation

Closeout

5.0 PROJECT SETUP AND SITE PREPARATION ACTIVITIES

Pre-Construction Meeting Mobilization Field office and site security setup Electrical Supply Source Prepare and equip site lay down Areas On-site Project Kick-off meeting Structural Survey Wind Monitoring

6.0 HAZARDOUS MATERIALS ABATEMENT

6.0.1 Asbestos Abatement

6.0.2 PCB Abatement

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6.0.3 Contaminated Media

7.0 DEMOLITION ACTIVITIES/METHODS

Demolition Guideline Demolition of Structures

7.1.1 Structurally Unsound Buildings

Dust Control Measures

8.0 WASTE MANAGEMENT AND TRANSPORTATION

Material Handling Waste Management and Transportation

8.2.1 Waste Classification

8.2.2 Accumulation and Storage

8.2.3 Packaging, Marking, and Labeling

8.2.4 Off-Site Material Management

8.2.5 Manifest Copy Distribution

8.2.6 Transportation

8.2.7 Treatment, Recycling, Disposal

9.0 DEMOBILIZATION

Equipment and Personnel Decontamination

9.1.1 Equipment Decontamination Procedures

9.1.2 Worker Decontamination Procedures

Site Restoration

10.0 REFERENCES

TABLES

Table 1 List of Equipment Containing Hazardous Material Table 2 Amount of Lead/PCB’s in Paint Table 3 Asbestos Locations and Approximate Quantities Table 4 Waste Disposal Methods Table 5 Waste Types and Disposition

APPENDICES

Appendix A Project Drawings Appendix B Field Forms Appendix C Asbestos Abatement Work Plan Appendix D Lead/PCB Abatement Work Plan Appendix E Personnel Resumes Appendix F Bureau of Indian Affairs Site Investigation Report Appendix G Hazardous Building Materials Survey & Sampling Final Report

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ACRONYMS AND ABBREVIATIONS

ACM ..................... asbestos-containing material ADEC .................... Alaska Department of Environmental Conservation Ahtna ..................... Ahtna Global, LLC BCE ....................... Bratslavsky Consulting Engineers BIA ........................ Bureau of Indian Affairs CO ......................... Contracting Officer COR ...................... Contracting Officer’s Representative DWP ...................... Demolition Work Plan EPA. ...................... U.S. Environmental Protection Agency HEPA .................... high-efficiency particulate air HWAP ................... hazardous waste accumulation point LBP ....................... lead-based paint mg/kg .................... milligrams per kilogram PCB ....................... polychlorinated biphenyl PM ......................... Project Manager POL ....................... petroleum, oils, and lubricants PPE ........................ personal protective equipment ppm ....................... parts per million QA ......................... quality assurance QC ........................ quality control RCRA .................... Resource Conservation and Recovery Act SS .......................... Site Superintendent SSHP ..................... site-specific safety and health plan SOP ....................... standard operating procedure TCLP ..................... toxicity characteristic leaching procedure TSCA .................... Toxic Substances Control Act USAF .................... United States Air Force USFWS ................. U.S. Fish and Wildlife Service

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1.0 INTRODUCTION

Ahtna Global, LLC (Ahtna) has developed this Demolition Work Plan (DWP) for the remedial action and demolition of the Bureau of Indian Affairs (BIA) Bethel Headquarters, formerly known as the Bethel U.S. Air Force (USAF) Aircraft Control & Warning Station. This DWP relates to 11 buildings on two sites—10 buildings on the initial 27-acre site mentioned in the Scope of Work plus one building on an additional 18-acre site for a total of 45 acres. The work includes demolition of sewer lines, foundations, all existing structures, and associated aboveground piping and equipment. These work sites are located approximately 3 miles west of Bethel, Alaska. The USFWS retained Bratslavsky Consulting Engineers to develop the initial Demolition Work Plan from which Ahtna developed this plan.

Background

The Bethel Air Force Station was built in 1958 as part of the USAF’s White Alice Control System and originally encompassed a larger area and housed several more buildings and structures related to radar and communication equipment. In 1963, the Air Force considered this air base excess and issued a permit to the Bureau of Indian Affairs (BIA) granting them use of the site as administrative offices, which became known as the BIA Bethel Headquarters.

The 45-acre site consists of 11 buildings that were abandoned by the BIA circa 1992. The land was turned over to the Bureau of Land Management and the USFWS now manages the site. Due to the condition of the property, the facility has become an attractive nuisance for the local community. It has been damaged by fire, and no longer retains a viable use for the USFWS.

Therefore, the Department plans to demolish and remove all buildings and foundations on the former BIA Bethel Headquarters site.

Prior to turning over the complex to the BIA, the USAF abated all known asbestos containing materials (ACM), but as the USFWS suspected there is some ACM present today. The project site has hazardous and solid waste remaining. These 11 buildings, foundations, and surrounding land contain some level of contaminants including lead base paint (LBP), petroleum products, polychlorinated biphenyls (PCB), and asbestos.

Project Objectives

The objective of this project is to locate and abate the identified hazardous materials that exceed allowable limits, including but not limited to asbestos, LBP, PCBs, sludge (sewer line), etc. and to demolish all existing buildings, sewer lines and foundations within the 45-acre site. The 11 buildings identified as being present at the site and their locations and details are shown on drawings G-001 thru G-013 in Appendix A.

Below is a list and brief description of all the buildings and structures scoped for removal:

1.2.1 Buildings Description

a. Building #413 Administration Building: Total of 57,000 square feet.

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This 33,500 sq. ft. building was utilized as the two-story sleeping A, B and C wings. The rest of the building is single story made up of: mechanical room, 6 bay garage/transformer, mechanical room, and kitchen/dining room. Drawings G-005 and G-006 depict detailed information. The building has concrete fire break walls and a concrete foundation. Wings A, B, and C have wood piling supporting the 5” concrete foundation. Most of the western portion and wing C of the building was burned to the ground. The wall, ceiling and floor finishes have been removed, leaving only the wood framing and floor underlayment.

b. Building #414 Water Utility Building: Total of 2,100 square feet.

This is a split-level wood framed rectangular building with a wood piling supported concrete foundation. The wall, ceiling and floor finishes have been removed, leaving only the wood framing and floor underlayment. The building housed a former pump room and two water treatment/storage tanks. Drawing G-007 depicts detailed information.

c. Building #416 Warehouse: Total of 3,200 square feet.

This is a three-story rectangular concrete building on a steel piling. The roof has concrete eight-sided overhanging eaves five feet wide. Walls, ceiling and floor finishes have been removed, leaving only the concrete and interior wood framing furring. Drawing G-008 depicts detailed information.

d. Building #419 Shop: Total of 3,500 square feet.

This is a two-story 12-sided steel building with steel pilings supporting a concrete foundation with insulated exterior walls constructed of corrugated exterior skin and interior flat sheet metal skin. Interior perimeter walls are furred in with 2”x4” studs. The walls, ceiling and floor finishes have been removed, leaving only the concrete structure and interior wood framing firing. Drawing G-009 depicts detailed information.

e. Building #420 Warehouse: Total of 900 square feet.

This is a 21-foot-tall hexagon shaped building with wood piling supported concrete foundation and fiberglass insulated exterior walls with interior and exterior sheet metal skin. The concrete foundation is an unconventional design consisting of an external circular ring and an interior square, both 3 foot thick. Walls, ceiling, and floor finishes have been removed, leaving only the piling/concrete foundation, steel structure, walls, and decking. Drawing G-010 depicts detailed information.

f. Building #421 Education Building: Total of 1,000 square feet.

This is a one-story wood framed building with wooden piling supported concrete perimeter foundation. Walls are finished with gypsum wall board and wood paneling. Floor finishing

Ahtna Global, LLC 3 July 2020 has been removed. Survey data indicates this building is a part of the 18-acre parcel. Drawing G-011 detail A depicts detailed information.

g. Building #422 Shop: Total of 3,200 square feet.

This is a two-story rectangular concrete building on a steel piling with a crawlspace. The roof has eight-sided concrete eaves with a five-foot overhang. Wall, ceiling and floor finishes have been removed, leaving only the concrete and interior wood framing furring. Interior spaces are furred in with 3”x3” studs. Drawing G-012 depicts detailed information.

h. Building #423 Warehouse: Total of 1,500 square feet.

This is a two-story 12-sided steel building with a wood piling supported concrete foundation and fiberglass insulated exterior walls with interior and exterior sheet metal skin. The concrete foundation is an unconventional design consisting of external circular ring and interior square, both 3 feet thick. Walls, ceiling and floor finishes have been removed, leaving only the piling/concrete foundation, steel structure, walls, and decking. Drawing G-013 depicts detailed information.

i. Building #424 Pump House: Total of 200 square feet.

This is a one-story building framed with 2”x4” wood; with a metal roof on wooden cribbing.

The building has been completely stripped of equipment and finishes. Drawing G-011 depicts detailed information.

j. Building #425 Sewage Lift House: Total of 170 square feet.

This is a one-story wood framed with 2”x4” with a wooden piling supported concrete foundation. There are two floor mounted pumps associated with two 40-gallon wastewater tanks. Drawing G-014 detail A depicts detailed information.

k. Drinking Water Supply Flowline: Total of 250 feet.

The flowline is enclosed by a 2 foot by 2 foot insulated above ground utilidor that runs from Building #414 into Building #413.

l. Wastewater Line: Total of 1,040 feet.

This is a 6” diameter steel pipe that runs from east of Building #413 through Building #425 into the sewage lagoon. The pipe is supported at about 6 feet in the air by 6-inch diameter steel pilings every 20 feet of pipe. The sewer pipe contains asbestos, in addition to the potentially hazardous sludge within the pipe. Previous testing of two samples of the sludge in 2010 determined that one sample contained PCBs in excess of 1 ppm, and one sample contained

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PCBs at a concentration less than 1 ppm. The State of Alaska says concentrations over 1 ppm are not allowed to be disposed of in-state.

m. Electrical Poles: Total of 14 utility poles with wiring remain on site.

n. Refrigeration Trailer: Total of 240 square feet.

This is a one-story wooden trailer with insulation and metal skin still attached and minor remains of freezing units at the back. Drawing G-014 depicts detailed information.

The work covered under this Work Plan is to be conducted in a sequential manner. Demolition work shall be performed in accordance with OSHA, ADEC, USFWS and City of Bethel requirements. Ahtna’s sequence of demolition activities may require alteration at any given time, depending on the site conditions. A summary of the general sequence of work is outlined below:

Pre-demolition survey of each building Pre-construction activities and site mobilization Verification of utility disconnects and isolations Removal of remaining chemicals and hazardous materials Removal of asbestos (ACM) and PCB containing materials Demolition of existing buildings and structures Removal of demolished debris and material to the appropriate offsite disposal/recycling facilities Equipment Decontamination Demobilization

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2.0 PROGRAM ORGANIZATION AND RESPONSIBILITIES

Certification

Ahtna will self-perform Asbestos work. All Ahtna personnel shall have EPA/AHERA-Asbestos Abatement Certification for Contractors and Supervisors (in compliance with Alaska Asbestos Abatement Certification Statues 8 AAC 61.600-790, and EPA/AHERA Regulation 40 CFR Part 763 Subpart E for Supervisors and Contractors).

Licensure

Ahtna is a full service licensed and certified environmental remediation firm in the state of Alaska.

Personnel Organization and Responsibilities

The following subsections describe the responsibilities and positions for each of the key personnel related to this project. Resumes verifying their work experience are located in Appendix E.

2.3.1 Nathan Stephens, Ahtna Project Manager (PM)

The PM has overall responsibility for management of this project. The PM will check that adequate resources are provided to the site superintendent and safety and health staff to carry out their responsibilities as outlined below. The PM will also check that adequate personnel and equipment resources are available to complete the project safely. The PM will have the overall responsibility to see that this project is completed according to the plans and specifications.

2.3.2 Ward McDonnel, Ahtna Site Superintendent - Abatement (SS)

The abatement SS is responsible for the management of scheduling, coordination, and execution of Ahtna’s on-site abatement activities in accordance with the project specifications. He works under the direction of the Project Manager (PM). In addition to these activities, the SS assists the Site Safety and Health Officer (SSHO) in daily monitoring for safety deficiencies in the work and workplace. He is Ahtna’s on-site representative in dealings with subcontractors associated with this contract. Mr Mcdonnel will clear the structures of hazardous materials prior to demolition and ensure proper storage, placarding, and transportation for disposal of hazwaste.

2.3.3 Marty Walker, Ahtna Site Superintendent - Demolition (SS)

The demolition SS is responsible for the management of scheduling, coordination, and execution of Ahtna’s on-site demolition activities in accordance with the project specifications. He works under the direction of the Project Manager (PM). In addition to these activities, the SS assists the Site Safety and Health Officer (SSHO) in daily monitoring for safety deficiencies in the work and workplace. He is Ahtna’s on-site representative in dealings with subcontractors associated with this contract. Mr Walker will oversee the demolition of non-hazardous structures and, as necessary, select demolition for access to hazardous materials for abatement by Mr Mcdonnels crew.

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2.3.4 Thamen Barry, Ahtna Site Safety and Health Officer (SSHO)

The SSHO is responsible for all site safety and health activities and documentation in the field as appropriate. The SSHO is Red Cross Certified in cardiopulmonary resuscitation (CPR) and First Aid and has completed a 30-hour OSHA training in accordance with 29 CFR 1926. The SSHO is responsible for implementing this SSHP and initiating changes to the plan with the concurrence of the PM. The SSHO has stop-work authority for specific activities, which will only be executed upon determination of an imminent safety hazard or potentially dangerous situation.

The SSHO will be present during all project operations. The Project Certified Industrial Hygienist (CIH) will assist the SSHO, as necessary.

2.3.5 Thamen Barry, Contractor Quality Control System Manager

The Contractor Quality Control System Manager (CQCSM) will be directly responsible for supervision of Quality Assurance Plan (QAP) implementation during field activities. The CQCSM answers directly to the PM, duties include:

Implementing elements of the QAP and maintain a copy on site.

Stopping work and initiating corrective action when activities fail to comply with QC requirements Maintaining the photographic record of work progress and site conditions Remaining on site at all times during work, with complete authority to take any action necessary to ensure conformance with the contract requirements Certifying daily that work performed on the project site conforms to plans and specifications;

reporting any deficiencies and remedial actions planned and taken Completing and submitting Daily Quality Control Reports (DQCRs) to the PM, the SS, and the USFWS COR Submitting weekly updated project timelines to the USFWS COR Organizing and conducting preparatory, initial, and follow-up meetings.

Ensuring that materials on site meet specifications Ensuring that personnel on site have the proper qualifications necessary for performing their tasks.

2.3.6 Matt White, Ahtna PE CIH

Oversees Ahtna’s Health and Safety Program. Mr. White will be available for input regarding health and safety issues which may unexpectedly arise at the site.

2.3.7 Subcontractors/Vendors

Alaska Marine Lines (AML) will transport demolition debris and contaminated soil from Bethel, Alaska, to Seattle, Washington.

ATC Group Services, LLC is the laboratory that will perform all personnel and air monitoring associated with lead and asbestos-containing material (ACM) abatement activities.

Waste Management, Inc. (Waste Management), will provide disposal of lead/PCB waste, ACM, and contaminated media generated as part of this project.

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Training

Ahtna shall provide site specific training prior to the beginning of work at the site. No site workers will be allowed to begin work on site until the site-specific training is completed and documented by the supervisor. Training will address all safety and health issues and procedures pertinent to site operations.

Upon arrival at the site, employees will receive additional training in the following areas:

Project introduction and orientation Requirements and responsibilities for accident prevention and maintaining a safe and healthful work environment Chemical and physical hazards on the site Hazard communication training for all hazardous materials brought on site Job hazards and the means to control and/or eliminate those hazards including applicable activity hazard analysis Selection and use of personal protection equipment (PPE) Employee and supervisor responsibilities for reporting all accidents and incidents Decontamination procedures Procedures for reporting and correcting unsafe conditions or practices

Specific hazard training as it pertains to asbestos will include:

The hazards and health effects of specific types of Asbestos Containing Material (ACM) to be abated

The contents and requirements of the asbestos hazard abatement plan Air monitoring program procedures enter specific work practice controls and engineering controls required for each class of work in accordance with 29 CFR 1926, Section 1101.

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3.0 HEALTH AND SAFETY

Ahtna considers safety and the prevention of accidents an integral part of its operation. Under Federal, State and local laws, Ahtna is responsible to provide a safe working environment, and to protect life, health and safety of its employees and subcontractor’s personnel.

Ahtna will hold daily meetings for its employees prior to work commencement. These meetings are designed to discuss the projected work schedule and prepare each worker for any potential hazards associated with the work activities. A copy of the daily or weekly safety meetings logs will be maintained onsite at all times. All personnel attending the safety meeting will be required to sign the safety-meeting log upon completion of the safety meeting. During the safety meetings, personnel will be reminded of site conditions and are encouraged to participate with health and safety concerns.

At the conclusion of the project, copies of all daily activities will be presented in a final report to the USFWS.

Daily Housekeeping

Good daily housekeeping is the foundation for a safe work environment. Proper daily housekeeping prevents accidents and fires, as well as, creates organized and secure workplace atmosphere.

All materials shall be stored in a stable manner so that they will not be subject to falling, shifting, or spilling. Rubbish, scraps, and debris will be removed from the work area on a daily basis to jobsite dumpsters, trucks, or stockpiled, as required.

Materials and supplies will not be in left walkways or outside the work area. Work area shall be inspected by a designee of the contractor at the end of each work shift.

Minimum Personal Protective Equipment (PPE)

Personal protective equipment will be worn as necessary to safely complete this project.

Employees must check with their supervisor regarding any portion of their job and/or PPE that they are not familiar with.

Goggles, face shields, helmets and other comparable equipment are required to fit the eye and face protection needs of each individual employee.

Hard hats shall be ANSI approved. Hard hats, steel toe shoes, eyewear and high visibility vests (HSVS) are required gear on the job site.

Long-sleeved shirts and jackets will be worn as required.

Gloves as necessary.

ANSI Approved Steel Toed Boots are required on the project.

Respiratory protection will be used as a safeguard against hazardous fumes. When respiratory protection is utilized, Fit Test Records will be supplied.

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Material Safety Data Sheets (MSDS) present on job site at all time. MSDS binders are assembled based on the materials stored in job trailers and site trucks. If at any time new materials are delivered MSDS forms will be inserted.

The use of full body harnesses is required when working on elevated work where there is no guard rail protection.

Ear protection must be worn during operation of heavy equipment.

Site Specific Safety and Health Plan (SSHP)

A comprehensive SSHP will be prepared and enforced for the duration of the abatement and demolition activities. The SSHP will include a summary of principal hazards, Site-specific and activity-specific training to be provided, and methods used in the field to project workers and equipment. Some of the principal elements to be addressed as modules or appendices in the SSHP will include the following, among others:

Stormwater Pollution Prevention Plan (SWPPP)

Hazard Communication Plan

Traffic Control Plan

Safety Data Sheets (SDS)

Requisite employee training

Emergency evacuation

Accident investigation

Visitor requirements and orientation

Personal Protective Equipment (PPE)

More information can be found in Ahtna’s Site Specific Safety and Health Plan (SSHP) for this project under separate cover.

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4.0 QUALITY ASSURANCE

The goals of Ahtna’s quality control practices are to identify and correct problems before they are carried forward in the project and to ensure that submittals meet professional standards of quality.

The principal quality control (QC) objectives in this Quality Assurance Plan (QAP) are to:

Document compliance with the contract and this work plan.

Ensure sufficient field data are collected

Adherence to specifications and project requirements will be assured by implementing a three-phase QC approach. This approach includes inspections of work elements during the preparatory phase, initial phase, and follow-up phase.

Three Phase control System

QC ensures compliance with contract requirements. QC practices will cover on-site activities that are relevant to the project, and a three-phase approach for each DFOW including preparatory, initial, and follow-up. The CQCSM is responsible for overseeing the three-phase QC on the project, as outlined below. Example QC forms are provided in attachments B and C.

4.1.1 Preparatory Phase

The preparatory phase commences with actions in advance of site activities. The purpose of this phase is to oversee the advance preparations and planned construction activities. The CQCSM will ensure that all activities are conducted within the terms of the contract, that all materials supplied to the project are of the type and quality as specified in the contract, and that all submittal documentation for the DFOW has been submitted and approved. The preparatory meeting agenda and checklist for each DFOW can be found in Attachment B.

Tasks involved in this preparatory phase include the following:

Review of local, state, and federal specifications and standards applicable to the DFOW Review of all planning document sections in the WP that are applicable to the DFOW:

Accident Prevention Plan, Site Safety and Health Plan, Environmental Protection Plan (EPP), Waste Management Plan, and CQCP

Physical examination of required materials, equipment, and sample work to ensure that they are on hand, conform to submitted data, and are properly stored

4.1.2 Initial Phase

The initial phase will be conducted at the beginning of a DFOW and documented on the DQCR.

The initial phase will verify that controls for the work developed in the preparatory phase are implemented. An Initial Phase Checklist is included as Attachment C. Tasks will be completed as follows:

Review plans and procedures developed during the preparatory phase Check preliminary work for compliance with contract requirements and approved plans

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Resolve all differences

The CQCSM will inspect all work activities to ensure that they are performed in accordance with the plans and specifications. The CQCSM will document discrepancies and variances in the DQCRs. Any problems or concerns will be discussed immediately with the USACE on-site QAR and Ahtna PM, and the appropriate corrective action taken will be noted.

4.1.3 Follow-Up Phase

The purpose of QC oversight of this phase is to ensure that the levels of workmanship previously established are still being met. The CQCSM will ensure that the procedures utilized are in compliance with the contract specifications. Any rework items will be corrected, and any required inspections will be performed.

Field verification of this phase of work will consist of daily inspections of work both in progress and completed, inspections of field equipment, and inspections of safety measures to ensure that all operational and safety procedures are being followed. Inspection items typically include the following:

Pre- and post-work photographs Determining that work activities are as identified in the SOW Ensuring that environmental concerns have been addressed Ensuring worker and public safety measures have been adhered to Confirming site restoration and cleanup have been undertaken effectively

Results of the inspections will be documented in the DQCRs.

Definable Features of Work

Inspections of materials and workmanship before, during, and after each DFOW are required to verify quality of work and compliance with the WP. The identified DFOWs are as follows:

Mobilization and Site Preparation Task 1: Abate hazardous materials and demolish building 413 Site Restoration and Demobilization

Optional DFOW

Task 2: Abate hazardous materials as needed and demolish buildings 422 – 425.

Task 3: Abate hazardous materials as needed and demolish buildings 414, 416, 419, 420, 421, Refrigerated Trailer, and officially close the abandoned well/hole in front of building 414.

Task 4: Crush and pile staged concrete to 1.5 inch minus.

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Reporting

The PM is responsible for preparing, submitting, and certifying all project submittals. The PM is also responsible for reviewing all work performed by Ahtna, as well as any subcontractors, and materials supplied by others.

4.3.1 Submittals

The PM will submit for approval all materials, plans, reports, and test results for this contract.

Submittals will be reviewed by the PM to ensure compliance with the contract specifications.

The submittals will include a transmittal form, and each submittal will be properly identified per the contract requirements. The PM will have ultimate responsibility for the completeness and accuracy of each submittal and the submittal tracking process.

4.3.2 Scheduling

Ahtna will schedule submittals of major and/or critical items in a logical and coordinated fashion, to allow adequate review time and avoid unnecessary delays. A detailed project schedule is presented in the Work Plan.

4.3.3 Documentation

Daily Quality Control Reports (DQCRs) will be the official record of field data and events. An example DQCR and other field forms are provided in Appendix B. All field records will be maintained at the site office until fieldwork is complete. The CQCSM will transfer all records for archiving in the project file at the completion of field work.

A DQCR will be submitted for each day that work is performed in the field, including all mobilization and demobilization efforts. DQCRs will be signed and dated by the CQCSM and will include copies of test reports and copies of reports prepared by all subordinate QC personnel. The original and one copy of these records in report form will be furnished to the government daily within 24 hours after the date covered by the report, except that reports need not be submitted for days on which no work is performed. As a minimum, one report will be prepared and submitted for every 7 days of no work and on the last day of a no-work period. All calendar days shall be accounted for throughout the life of the contract. The first report following a day of no work will be for that day only.

In addition to the DQCRs weekly schedule updates will be submitted to the USFWS COR per the contract to assist in scheduling onsite COR verifications.

Closeout

Ahtna will provide a completion task report on each task (Tasks 1 through 3) to include but not limited to pictures, waste manifests, and tonnage of material recycled (include concrete). At the completion of Task 4, Ahtna will provide an all-inclusive summary report of the project.

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5.0 PROJECT SETUP AND SITE PREPARATION ACTIVITIES

Project setup will include conducting a pre-construction meeting and preparation of project plans and permits.

Pre-Construction Meeting

Ahtna will hold a pre-construction meeting via teleconference and/or in person to discuss the following:

Introduction of project team field representatives and their respected roles Discussion of demolition schedule Relation and coordination of subcontractors Distribution of contract documents Clarification of specific questions Field communication plan Procedures for maintaining record documents Use of project premises and materials Submission and processing of monthly application for payment forms and associated requirements

Meeting notes will be documented and issued to the attending parties.

Mobilization

Once the project setup activities are approved, mobilization to the site will be performed. The activities performed as part of these preparatory efforts will include, at a minimum, the following:

Field office and site security setup Electrical Supply Source Prepare and equip site lay down areas On-site kick-off meeting Utilities locating and verification Structural survey Wind monitoring

A summary of the key activities performed as part of these efforts is provided in the following sections.

Field office and site security setup

Ahtna will set up a field office trailer to allow for onsite management to complete paperwork and to coordinate the project needs and activities. The field office will handle all administrative and operational functions required to ensure the smooth execution of the project. Portable restrooms

Ahtna Global, LLC 16 July 2020 will be available to site workers as needed. Fencing will be installed where needed around the perimeter of the site. After hours and on weekends, access points to the site will be locked with a key.

Electrical Supply Source

Ahtna understands that there is an existing live overhead electrical line that runs along the west side of Sidney Street up to the intersection with BIA road (see drawings G-002 Site Map and G- 003 Lay down Area in Appendix A). Ahtna may use this source to establish an electrical supply for the project needs via service drop. However, if the landowner will not allow a temporary connection Ahtna will default to generator power.

Prepare and equip site lay down Areas

Ahtna will establish a field office, decontamination wash station, lay down areas, material storage areas, and the primary decontamination area for use as needed throughout the project. An office trailer will be used to maintain project plans/specifications, and daily field documentation. Copies of all project plans and permits will be kept at the site including, but not limited to, the SSHP, SWPPP, Traffic Control Plan, Demolition Work Plan, and SDS.

Ahtna will perform all required brush and wood debris removal, minor site access improvements, and/or hand-picking of small debris, as applicable. Wood debris, Brush, and or surface debris may be hauled to the local wood lot or may be hauled to the Bethel landfill, as necessary.

On-site Project Kick-off meeting

An initial on-site project kick-off meeting with the project team and the USFWS will be held to fully inform personnel of project protocols, health and safety requirements and chain of command.

Topics of discussion will include, but are not limited to:

Introduction of field representatives and their respective roles Discussion of demolition schedule Coordination of subcontractors, as applicable Clarification of specification questions Use of project premises, and Requirements for PPE, emergency response, and health and safety requirements.

Structural Survey

Ahtna will complete a survey of all structures for structural integrity prior to hazardous material removal and demolition activities. The contents of each structures will also be inspected for potential hazards that may impact demolition. If required, temporary bracing may be installed to make structures safe for pre-demolition work. The results of the survey will be discussed with the site personnel and documented in the daily quality control reports.

Ahtna Global, LLC 17 July 2020

Wind Monitoring

An aviation wind stock and wind meter will be installed prior to commencement of abatement and demolition activities. The wind direction and speed will be observed by the designated project personnel at the start of each day and continually throughout the day during active ACM and PCB abatement, hazardous waste removal, and building demolition activities. If excessive sustained wind speeds or gusts create unsafe working conditions or have the potential to create uncontrollable amounts of dust then all applicable activities will cease. Work activities will resume once the SSHO and SS agree that it is safe to do so.

Ahtna Global, LLC 18 July 2020

Ahtna Global, LLC 19 July 2020

6.0 HAZARDOUS MATERIALS ABATEMENT

The scope of abatement includes removing and properly disposing of hazardous materials (e.g., oils, grease, asbestos-containing material, PCB). The majority of ACM and other hazardous materials have been abated from the buildings with the exception of a few large pieces of equipment (Table 1), lead/PCB Paint (Table 2), and ACM containing material (Table 3).

TABLE 1 – List of Equipment Containing Hazardous Material

Building Generators & Turbines

Mercury Switches

& Gauges

PCB

Light

Ballasts

Trans-formers

Drums Fridges (CFCs)

Tanks

Misc.

HVAC

Equip.

Bldg 413 4 0 0 0 0 4 0 0

Bldg 414 1 0 0 0 0 0 3 0

Bldg 421 0 0 0 0 0 0 0 1

Bldg 422 0 0 0 0 0 0 0 1

Once the structures have been identified as safe to enter, and prior to beginning work activities, hazardous materials will be located. Hazardous/toxic materials and universal waste present in the buildings are shown in Table 2. Ahtna will inspect the structures, locate and clearly mark items identified on the contract documents and identify any additional items that will need to be addressed prior to demolition. Ahtna will look for fluorescent light ballasts and bulbs, mercury vapor lamps, refrigerants, paint cans, and other items that require removal prior to demolition. In the event that suspected asbestos containing material are encountered, which were not previously identified, Ahtna will inspect and sample materials. Any confirmed ACM results will be forwarded to USFWS.

Preparation, abatement, or demolition work will not occur in or around any structures until it has been verified and documented in writing that the Hazardous Material/Universal Waste Identification and removal is complete.

TABLE 2 – Amount of Lead/PCB’s in Paint

Sample

ID #

Sampling Location Color Lead

Result (mg/kg)

Lead

RL

(mg/kg)

PCBs Result (µg/kg)

PCBs

RL

(µg/kg)

Approximate Quantity (square feet, unless otherwise noted)

BUILDING 413

P001 Service garage ili

White 1230 45 18500 2500 160

P002 Service garage wall Yellow, blue, green, red

10300 36 19300 2500 184

P003 Pipe- Wing A White, green, yellow

19000 81 90200 13000 800

P004 Door jamb- Wing A Yellow 25200 78 60400 J 63000 108 in.2

P005 Wing A- Wall Yellow 11800 50 5570 2500 200

Ahtna Global, LLC 20 July 2020

TABLE 2 – Amount of Lead/PCB’s in Paint

Sample

ID #

Sampling Location Color Lead

Result (mg/kg)

Lead

RL

(mg/kg)

PCBs Result (µg/kg)

PCBs

RL

(µg/kg)

Approximate Quantity (square feet, unless otherwise noted)

P006 Wing A- Wall ( i il )

Yellow 206 35 23.6 J 56 360

P007 Wing A- Floor ( i il )

Yellow 33.7 0.84 ND 81 912

P008 Hall by generator Blue, hi

4690 32 7270 1400 2080

P009 Closet with air unit Gray 1440 50 1000 310 1020

P010 Wing B- Center door jamb

Green, white, 2080 34 67700 11000 110 in.2

P011 Cold storage Not Noted 819 37 50200 9600 1200

P012 Generator room- Gray 705 43 4930 1900 3860

P013 Concrete generator support

Red 3810 41 a 12600 b 10600

2300 48 ft.2 per generator

P014 Radiator by Gray, 2970 42 b 25900 8300 160

P016 Exterior wing A Yellow 23700 48 157000 630000 18,280 (entire bldg.)

P017 Exterior service Red 11300 40 ND 280000 1000

BUILDING 414

P001 Exterior siding Tan 25.5 1.9 1290 J 2500 1880 P002 Small tank by Red, 194 32 29800 2500 600 P003 Large tank Red, 44700 200 172000 170000 9820 P004 Floor by small tank Red, tan, 937 32 103000 25000 500 P005 Elevated tank Red, gray 40600 240 136000 210000 50 P006 Elevated tank Green, 48200 240 506000 630000 50 P007 Interior siding Green, hi d 1270 34 179000 45000 190

P008 Generator Green, 3280 40 63000 23000 12 P009 Generator Gray, red 3390 50 63400 28000 12 P010 Wall by electrical l Light 13100 100 34200 13000 200

P011 Electrical panel Gray 1720 50 90800 25000 100

BUILDING 416

P001 Steel “I” Beam Red, white, green

48100 190 ND 2000 1920

P002 Exterior siding Yellow 89.1 50 Not enough material for lab to analyze 3000

P003 Exterior stairs Yellow, red

57900 240 ND 9400 1000

BUILDING 419

P001 “I” Beam support White, red 49800 220 ND 12000 500

P002 Interior stairs 1st Floor

Green, white, pink

7230 49 Not enough material for lab to analyze 1800

P003 Metal column-interior

White, pink

11000 48 Not enough material for lab to analyze 500

P004 Exterior stairs Red, gray 35700 180 b 488 150 240

Ahtna Global, LLC 21 July 2020

TABLE 2 – Amount of Lead/PCB’s in Paint

Sample

ID #

Sampling Location Color Lead

Result (mg/kg)

Lead

RL

(mg/kg)

PCBs Result (µg/kg)

PCBs

RL

(µg/kg)

Approximate Quantity (square feet, unless otherwise noted)

P005 Exterior siding Gray, tan 52500 250 ND 290 3400

BUILDING 420

P002 Interior wall Not Noted Not enough material for lab to analyze 8830 1900 1500

BUILDING 421

P001 Concrete floor Red Not enough material for lab to analyze 1520 560 1020

BUILDING 422

P001 Stairs Blue, 39400 180 19500 J 25000 1000

P002 Column- center White, orange, 35700 160 a 4980 b 5110

P003 Air handling unit White, d

2800 48 12000 2500 800

P004 I Beam support by loading dock

Not Noted 42600 180 ND 2300 500

BUILDING 423

P001 Exterior siding White 1270 50 Not enough material for lab to analyze 2700

P002 Interior siding White 3050 49 5570 530 2700

P003 Exterior trim Red 1540 50 Not enough material for lab to analyze 40

P004 Exterior stairs Yellow/ orange

47400 200 Not enough material for lab to analyze 300

P005 Interior air handling unit

Yellow, red, green

Not enough material for lab to analyze 13600 5000 800

TRAILER (SOUTHEAST OF BUILDING 414)

P001 Exterior siding Silver 163 4.9 1530 780 600

* All quantities in Table 2 are estimates only. Abatement contractor will need to verify actual quantities during site visit.

Notes for chart above:

a = Aroclor 1254 b = Aroclor 1260 J = Laboratory’s estimated value ND = Not Detected RL = Reporting Limit < = below RL BOLD = Contained lead above the RL or contained ≥1,000 µg/kg for PCBs

In addition to the items listed in Table #2, there is a 6” sewer pipe in the crawlspace of Building 413 that runs out from the east side of Building #413 through Building #425 into the sewage lagoon. It contains potentially hazardous sludge within the pipe. Previous testing of two samples of the sludge in 2010 determined that one sample contained PCBs in excess of 1 ppm, and one sample contained PCBs at a concentration less than 1 ppm.

For additional background information the Final Site Investigation Report and Hazardous Building materials Survey & Sampling Final Report have been located in Appendix F and Appendix G.

Ahtna Global, LLC 22 July 2020

6.0.1 Asbestos Abatement

Ahtna will provide a comprehensive asbestos work plan (Appendix C) prior to mobilizing to project site. The plan will provide detailed daily activities including, but not limited, to:

ACM removal and packaging;

ACM transportation and disposal;

Completion of waste manifests;

PPE; and Decontamination procedures.

Asbestos removal and disposal will be in compliance with 40 CFR #61, Subpart M. The work will be completed in accordance with all state, federal and local regulations. ACM locations and approximate quantities are identified in the following Table 3:

TABLE 3 – Asbestos Locations and Approximate Quantities

Sample

ID#

Material Location Asbestos Content

Approx. Amount of Material in Bldg.

BUILDING 413

006 Door insulation Wing A 45% 1 door

007 Joint Compound Wing A 3% 400 ft2

008 Concrete Skim Coat Wing A- wall 3% 500 ft2

013 Gypsum Wall Board Cold storage 10% 1000 ft2

015 Joint compound Wing B 4% 400 ft2

019 Pipe insulation Sewage pipe- crawl space 10% Unknown-assume all

023 Cement Asbestos B d

Wing C- Front entrance 20% 320 ft2

BUILDING 414

003 Window glaze Window by small tank 4% Assume all windows

004 Flange valve gasket Generator 40% All gaskets

BUILDING 416

002 Seam sealant Roof 8% Unknown- Not intact

BUILDING 419

002 Seam sealant Roof 6% Unknown- Not intact

003 Vapor barrier Roof 30% Unknown- Not intact

BUILDING 420

001 Window glaze 1st Fl. window by generator 3% Assume all windows

204-01 Seam sealant Interior Wall 6% 60 linear feet

BUILDING 423

002 Window glaze Far side of stairs 3% Assume all windows

TRAILER (SOUTHEAST OF BUILDING 414)

001 Silver Sealant Exterior Seam 6% 600 ft2

002 Wire insulation Cooler unit 15% Unknown – inside unit

003 Glazing By cooler- back corner 5% 1 linear foot

Ahtna Global, LLC 23 July 2020

6.0.2 PCB Abatement

Ahtna will identify all PCB and Lead containing materials prior to the start of abatement. The removal of all Lead and PCB containing material will be completed prior to demolition activity where possible. All workers will have hazard awareness training including lead and PCB safety, hygiene issues, PPE, controls, and procedures training for loose and flaking paint/coating removal techniques that minimize airborne dust generation.

The demolished PCB contained steel generated during the demolition will be cut into sections, duct-taped, and placed in a fully poly lined storage/shipping container. The PCB wastes will then be barged out of state for disposal. See section 8.0 Waste Management and Transportation for specific information.

6.0.3 Contaminated Media

The sludge within the 6” sewer line will be treated as known PCB containing hazardous media. If other suspected contaminated media is encountered during demolition activities Ahtna will stop work in the immediate vicinity and notify the USFWS COR

Before disposing of any contaminated media Ahtna will submit the ADEC Transport-Treatment- Disposal Form to ADEC and the USFWS COR. https://dec.alaska.gov/spar/ppr/spill-information/reporting. A template of the form is located in Appendix B.

Ahtna Global, LLC 24 July 2020

Ahtna Global, LLC 25 July 2020

7.0 DEMOLITION ACTIVITIES/METHODS

Ahtna will limit the use of labor to the most controlled and safe conditions and rely upon mechanized means of removal wherever possible. Excavators equipped with concrete breakers, concrete munchers, grapples, and other modern hydraulic demolition tools and attachments will be utilized. Wherever possible, large structures will be removed to ground level using mechanized means. Subsequent sizing of scrap materials such as steel and rebar and other material processing activities will take place at grade level, hauled offsite and recycled accordingly.

Demolition Guideline

Traffic control signage and barriers during demolition shall be installed Pre-demolition meeting to be held onsite All demolition activities shall be conducted with minimal disruption to the community.

Dust shall be controlled by wet demo methods.

Structural demolition will be performed systematically from top of building to bottom. All demolition shall be conducted with properly sized heavy equipment. All hand work shall be conducted from the ground such as separation of wood debris from metal or concrete.

All clean, unpainted, concrete (no asbestos or PCB) will be shredded and staged at BIA laydown area.

All construction debris will be hauled offsite using roll offs and/or demo lined containers.

Construction debris that is not contaminated with hazardous material shall be taken to a local landfill.

Construction debris containing hazardous material shall be properly packaged and shipped off to appropriate landfill. All PCB contained material shall be shipped outside of state to an appropriately licensed facility.

The site shall be cleaned and cleared before departing each day to the approval of the Site Manager. If at any time materials cannot be hauled off site before departing for the day materials shall be neatly stored and secured.

Ahtna will provide traffic controls as necessary during demolition activities. Traffic controls will be conducted during loading and unloading of equipment and haul trucks or at times when traffic may be impacted due to demolition activities. Traffic flaggers will be required to wear Class III high visible vest.

Demolition of Structures

After the removal of hazardous materials, the above-grade structures will be ready for demolition.

Demolition will be performed based on the reach of the excavator and processing capability.

The building structures will be demolished using excavator-mounted hydraulic shears, bucket-and-thumb and hydraulic breaker attachment for hammering and breaking up the concrete portions of the structures. All foundation piles will be cut at the ground level.

Ahtna Global, LLC 26 July 2020

Clean concrete – after removal by heavy machinery, concrete will be staged at the COR designated BIA laydown area for further shredding and recycling.

General construction debris/waste - after removal by heavy machinery, debris will be placed in temporary staging areas. General debris will then be loaded into dump trucks, such as end dump and/or side dump trucks, or roll-off dumpsters, and transported and disposed of at the Bethel landfill.

Demolished TSCA concrete, steel, and wood - the demolished steel generated during the demolition will be cut into sections and staged in the Hazardous Waste Accumulation Point (HWAP) prior to loading for shipping as PCB remediation waste. Concrete will be All metal construction debris will be barged out-of-state for disposal.

7.1.1 Structurally Unsound Buildings

Ahtna will conduct ACM and PCB contaminated material removal in structurally unsound areas only after the overhead hazards have been resolved and the building is considered safe to enter.

ACM…