Attachment 1 - Specifications - Maxwell.pdf

MONONGAHELA RIVER LOCKS AND DAMS

SCOPE OF WORK AND SPECIFICATIONS

MAXWELL LOCK AND DAM ROOF REPLACEMENTS

1. GENERAL REQUIREMENTS

1.1 GENERAL

The work is located at 142 Maxwell L/D, East Millsboro, PA 15433-1261. The work consists of replacing the operations building roof and a maintenance building roof, with options to replace two (2) control shelter roofs, and a service building roof. The operations building roof is over 30 years old and has been patched. This roof is currently leaking in several locations. The existing Operations building roof is an approximately 30 foot by 60 foot membrane roof with stone ballast over an original built up roof. The maintenance building roof is an approximately 102 foot by 24 foot membrane roof over an original built up roof. The service building roof is an approximately 62 foot by 29 foot membrane roof with stone ballast over an original built up roof. The control shelter roofs (two total) are 16’ 7” by 14’ 1” built up roof, single story structures. The site of the work may be reached from state and local roads and streets. Access to the operations building and control shelters will be across the miter gate walkway. The walkways are 36 inches wide with 42 inch tall handrails on the sides. Loads on the miter gate walkways shall not exceed 500 pounds. During lockages miter gate walkways will be unavailable for use. The general description of the work pertains to the following building:

1) Operations Building, Maintenance Building, Service Building – The following provides a brief summary of work for the roof replacement for the Operations, Maintenance, and Service Building Roofs. Remove the existing roofing materials, insulation, roof drain covers, and gravel from the roofs. All portions of roof drains and piping shall be replaced to one foot below the finished architectural ceiling on the top floor of the buildings. The roofs are edged with galvanized steel fascia, which shall be replaced in kind. Install new, fully adhered, 90 mil EPDM roofing systems, conforming to ASTM D4637/D4637M. The roofing system shall have new tapered insulation and include the addition of any saddles, crickets, curbs, or other features to ensure positive drainage to the roof drains. New flashing shall be installed on all protrusions. Replace the entire drain bodies and install new drain covers. The interior drains lines will be partially replaced from the roof down one (1) foot. The existing roof materials have been tested and do not contain Asbestos.

2) Control Shelter Roofs: The following provides a brief summary of work for the roof replacement for the control shelter roofs. Remove the existing roofing materials, and gravel from the roofs. All portions of roof drains and piping shall be replaced to the existing middle wall slab. The roofs are edged with galvanized steel fascia, which shall be replaced in kind. Install new, fully adhered, 90 mil EPDM roofing systems, conforming to ASTM D4637/D4637M. The roofing system shall have new tapered insulation, and include the addition of any saddles, crickets, curbs, or other features to ensure positive drainage to the roof drains. Replace the entire drain bodies and install new drain covers. The drains lines will be replaced down to the existing middle wall slab.

The existing roof materials have been tested and do not contain Asbestos.

1.2 MEASUREMENT AND PAYMENT

Payment shall include all costs of labor, materials, supplies, equipment, supervision, cleanup, and other costs of completing the work as specified to remove and dispose of the existing roofing materials, insulation, drain covers, conductor heads and install a new roofing system, insulation, drain covers, and all other miscellaneous components. All material provided in the performance of this contract shall be new and meet the requirements of the specifications.

Below is a Price schedule for the work to be performed:

Line Item

Description Qty Unit

0001 Performance and Payment Bond

1 Job

0002 Reroof Operations Building

1 Job

0003 Reroof Maintenance Building

1 Job

Option 1 1001 Replace Roof on Two (2)

Control Shelter 1 Job

1002 Replace Roof on Service Building

1 Job

1.3 PROTECTION OF PERSONNEL

The Contractor shall insure that adequate measures are in place to protect workers, facility operation personnel and the public from injury due to the operations being performed. All protective measures shall be in accordance with EM 385-1-1.

1.4 SAFETY

In addition to the requirements included in the provisions of this contract, all work shall comply with the most recent edition of the USACE Engineering Manual (EM) 385-1-1, “Safety and Health Requirements Manual”, and all applicable federal, state, and local laws, ordinances, criteria, rules, and regulations. Where the requirements herein, applicable laws, criteria, ordinances, regulations, and referenced documents vary, the most stringent requirements govern.

If there are any standards that require interpretation, submit matters to the appropriate administrative agency for resolution before the commencement of work.

The latest version of the EM 385-1-1 is available online at:

http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_3 85-1-1.pdf

The Superintendent, QC Manager, and SSHO are subject to dismissal if any of the required regulatory requirements are not being effectively carried out. If dismissal occurs, project work will be stopped and no work shall proceed until a suitable replacement is approved and the appropriate requirements are assured to be effectively carried out.

1.4.1 Accident Prevention Plan

An Accident Prevention Plan (APP) is a safety and health policy and program document that shall be contract- and/or job-specific. The APP shall be developed by the Contractor and shall interface with the Contractor's overall Safety and Health Program, such that any portions of the Contractor's overall program referenced in the APP shall be included as appropriate.

The Contractor shall develop the APP in accordance with EM 385-1-1, Appendix A, and shall address each of the elements/sub-elements in the outline contained in the appendix in the order that they are provided in the manual, and as supplemented herein. If an item is not applicable because of the nature of the work to be performed, the Contractor shall state this exception and provide a justification. The APP shall be written in English by the Prime Contractor and shall articulate the specific work, work processes, equipment to be used, and hazards pertaining to the contract. The non-mandatory APP Checklist, Form A- 2 of the EM 385-1-1, may be used to ensure each area of required information has been provided as part of the APP to the Contracting Officer.

The APP shall be submitted to the Contracting Officer or their designated representative.

for review and acceptance within 15 calendar days after receipt of the Notice to Proceed (NTP) and prior to any commencement of work. Work cannot begin without an accepted APP. Once accepted by the Contracting Officer, the APP and all attachments will be enforced as part of the contract. Disregarding provisions of this contract or the accepted APP is a cause for stopping of that portion of the work at the direction of the Contracting Officer until the matter has been rectified.

A copy of the accepted APP shall be available on the worksite at all times. The Contractor shall provide on-going evaluations of the APP throughout the life of the project. Changes, revisions, and updates to the APP shall be reviewed and accepted by the Contracting Officer, project superintendent, SSHO, and Quality Control Manager.

Due to the recent COVID-19 pandemic, all Contractors that perform operations on LRP USACE-owned/operated facilities are to include an Infectious Disease Exposure Prevention, Preparedness, and Response Plan as an addition to their overall APP. The plan shall describe how the Contractor will implement the requirements and best practices issued by Federal, State, and Local authorities in order to prevent the spread of COVID and/or other infectious diseases.

1.4.2 Risk Management

A risk management assessment tool, such as an activity hazard analysis (AHA), shall be developed by the contractor performing the work for each type of activity the Contractor will perform as part of the Contract. The assessment shall identify the job steps, specific anticipated hazards, site conditions, equipment, materials, personnel, and the control measures to be implemented to control the hazards. Risk assessments shall be submitted for review at least 15 working days prior to the start of the activity, task, or defined feature of work is set to begin. The Government reserves the right to require the Contractor to revise and resubmit any documents if they fail to effectively identify the work sequence, specific anticipated hazards, site conditions, equipment, materials, personnel, and the control measures to be implemented. Work shall not begin until the assessments have been accepted by the Contracting Officer or their designated representative. and discussed with all engaged in the activity.

These risk assessments shall be developed in accordance with EM 385-1-1 Section 1, or as specified by the Contracting Officer. The Contractor may use the AHA form in Attachment titled AHA form to assist with completion of their risk assessments.

Each employee performing work as part of an activity, task, or DROW shall review the risk assessment for the activity and sign the signature log designated for the assessment prior to beginning work. A signature log shall be maintained for each risk assessment.

1.4.3 Designated Persons

The Contractor shall provide Qualified and/or Competent Persons in accordance with EM 385-1-1, OSHA, ANSI, and where specified herein. All Qualified and Competent Persons shall be designated in writing and shall meet the requirements for the specific activity for which they are designated.

Competent Persons identified in the Contractor’s Safety and Health Program and Government-accepted APP shall be onsite at all times when the work that presents the hazards associated with the competency is being performed.

Certificates of Qualification/Competency shall be provided to the Contracting Officer for review as part of the applicable AHAs and appendices of the APP.

1.4.4 Minimum Personal Protective Equipment

Personal Protective Equipment (PPE) is governed in all areas by the nature of work personnel are performing based on conducted hazard evaluations. AHAs shall detail the PPE to be used that will provide appropriate protection for the work to be performed when required. All PPE shall be provided by the Contractor, used, and maintained in a sanitary and reliable condition whenever the hazard dictates use.

Mandatory PPE, at minimum, shall include: hard hat (construction sites), long pants, short sleeve shirts, and leather or protective work shoes or boots. Personal Floatation Devices (PFDs) shall be worn at all times when working above or near water in which other fall protection methods do not provide the appropriate protection.

1.4.5 Mishap Reporting

A mishap is any unplanned, undesired event that occurs during the course of work being performed, to include, accidents, incidents, and near misses. All mishaps shall be reported to the Contracting Officer within 24-hours after notification from the affected employee(s). Contractors are responsible for maintaining an OSHA Log of Work-Related Injuries and Illnesses (Form 300) and complying with all reporting and recordkeeping requirements specified in 29 Code of Federal Regulations (CFR) 1904.

Damage Reports

All instances where Government materials, supplies, property, and/or equipment are damaged, shall be reported immediately to the Contracting Officer.

Hazardous Material Exclusion

Notwithstanding any other hazardous material used in this contract, radioactive materials or instruments capable of producing ionizing/non-ionizing radiation (with the exception of radioactive material and devices used in accordance with EM 385-1-1 such as, nuclear density meters for compaction testing and laboratory equipment with radioactive sources) as well as materials which contain asbestos, mercury, polychlorinated biphenyls (PCBs), Diisocyanates, lead, lead-based paint (LBP), and hexavalent chromium, are prohibited.

The Contracting Officer, upon written request by the Contractor, may consider exceptions to the use of any of the above excluded materials. Low mercury lamps used within fluorescent lighting fixtures are allowed as an exception without further Contracting Officer approval. Notify the Radiation Safety Officer (RSO), Safety Office, and the Contracting Officer prior to excepted items of radioactive material and devices being brought on site.

Unforseen Hazardous Materials

USACE shall identify and communicate all known hazardous materials such as Polychlorinated biphenyls (PCBs), lead paint, asbestos, and other OSHA regulated chemicals (i.e. 29 CFR 1910.1000) in which the Contractor may come into contact during the course of activities. If material is encountered that was not indicated, but may be hazardous to human health upon disturbance, that portion of the work shall stop and the Contracting Officer immediately notified. The Government will determine within 14 days of notification if the material is or is not considered hazardous. If the material is not hazardous or poses no danger, the Government will direct the Contractor to proceed without change. If the material is determined to be hazardous or dangerous and handling of the material is necessary to accomplish the work, the Government will issue a modification pursuant to FAR 52.243-4, Changes and FAR 52.236-2, Differing Site Conditions.

1.5 KEY PERSONNEL

1.5.1 Superintendent

Provide project superintendent with a minimum of 5 years’ experience in construction with at least 5 of those years as a superintendent on EPDM projects similar in size and complexity. The individual must be familiar with the requirements of EM 385-1- 1 and have experience in the areas of hazard identification and safety compliance.

The individual must be capable of interpreting a critical path schedule and construction drawings. The Contracting Officer may request proof of the superintendent's qualifications at any point in the project if the performance of the superintendent is in question.

1.5.2 Quality Control System Manager (QCSM)

The QCSM is required to be a graduate engineer, graduate architect, or a graduate of construction management, or a construction person with a minimum of 5 years’ construction experience on EPDM roof installations similar to the tasks in this Contract, and possess current CQC prospect course certificate.

This QCSM is to always be onsite during construction and to be employed by the prime Contractor. If qualified, the QCSM may serve as the Site Safety and Health Officer (SSHO), but may not serve as the Superintendent.

1.5.3 Site Safety and Health Officer (SSHO)

The Contractor shall employ a minimum of one Competent Person at each project site to function as the primary Site Safety and Health Officer (SSHO) to implement and administer the Contractor’s safety program and the Government-accepted Accident Prevention Plan (APP). The SSHO is a full-time responsibility and shall be an employee other than the superintendent, that reports directly to a senior project, or corporate, official. The SSHO shall be present at the project site and be located so they have full mobility and reasonable access to all major work operations during the shift. The SSHO shall meet all training and experience qualifications as outlined in EM 385-1-1 Section 01, Paragraph A.17. The SSHO may also serve as the Quality Control System Manager (QCSM), but the SSHO may not serve as the Superintendent.

SSHOs shall attend the pre-construction conference, pre-work meetings, including preparatory and periodic in-progress meetings.

1.6 PROJECT SUBMITTALS.

The contractor shall provide submittals for Government Approval. The Government reserves the right to require the Contractor to resubmit any item found not to comply with the contract. This does not relieve the Contractor from the obligation to furnish material conforming to the plans and specifications. It will not prevent the Contracting Officer from requiring removal and replacement of nonconforming material incorporated in the work.

1.6.1 Manufacturer’s Product Literature

Product data shall include catalog cuts, specifications or other descriptive data for materials proposed for use, including copies of Manufacturer’s warranties and required warranty maintenance. All appropriate descriptive data shall be clearly indicated on the submittal. For evaluation purposes, the bidder shall submit for approval:

• Manufacturer’s product literature for the fall protection hardware/system

• Manufacturer’s product literature for the roof membrane,

• Manufacturer’s product literature for the insulation,

• Manufacturer’s product literature for the adhesives,

• Manufacturer’s product literature for the roof edging

• Manufacturer’s product literature for accessories.

• Manufacturer’s product literature for control shelter downspouts

1.6.2 Roof Plan

Submit a Roof Plan that displays the layout of insulation and how it will be tapered to ensure positive drainage, to include the locations of any crickets, saddles, cants, curbs, etc. Additionally, provide manufacturer recommendations for fastener attachment patterns of insulation at the field, perimeter, and corners of the roof.

Provide manufacture’s details on flashing around wall perimeter, roof, and around any penetrations.

• Plan and drawings for the replacement of downspouts on control shelter roofs.

1.6.3 Fall Protection Plan

The Government is required to have a fall protection system in place to protect personnel during light maintenance and inspections. The contractor shall be required to install permanent roof fall protection anchors for use as part of a personal fall arrest system that permits access to the maintenance, service and operations roofs for 2 people. The anchors shall be installed to meet or exceed the requirements of EM 385- 1-1, OSHA 1910, OSHA 1926 Subpart M, ANSI Z359, and ANSI A10.32. Where the requirements of these standards differ, the most stringent shall be followed. The anchors shall be made of stainless steel or other corrosion resistant materials designed to be installed permanently without damaging the roofing system. The contractor shall submit a Fall Protection Plan that includes product data on the proposed anchors, as well as layout and installation details for review and approval prior to installation.

1.6.4 Inspection Reports

Inspection Report. Once the roof is bare, the Contractor shall provide an Inspection Report. This Inspection Report shall give the condition of the roof and any recommendations of the Contractor.

1.6.5 Qualifications of Installer

System installer shall be approved, authorized, or licensed in writing by the system manufacturer and shall have at least the minimum five (5) years’ experience required by the manufacturer as an approved, authorized, or licensed installer with that manufacturer and be approved at a level capable of providing the specified warranty.

Contractor shall provide documentation of manufacturer’s certification requirements with own credentials.

1.6.6 Credentials of Designated Persons & Contractor

Provide credentials for the following personnel: SSHO, Fall Protection.

Provide a copy of the Manufacture’s Certificate.

1.6.7 Accident Prevention Plan (APP)

An abbreviated APP shall address:

• Lead Compliance Plan

• Infectious Disease Exposure Prevention, Preparedness, and Response Plan

The APP shall include an Infectious Disease Exposure Prevention, Preparedness, and Response Plan. The plan shall describe how the Contractor will implement the requirements and best practices issued by Federal, State, and Local authorities to prevent the spread of COVID and/or other infectious diseases.

1.6.8 Project Schedule

Project Schedule must be provided in MS Project or Excel formats. Schedule must be submitted 2 weeks after Notice to Proceed (NTP), at least 2 weeks prior to the proposed start date, and updated at least weekly.

1.6.9 Quality Control Plan

The contractor shall complete and submit a Quality Control Plan. The quality control system shall consist of plans, procedures, and organization necessary to produce an end product which complies with the contract requirements. Cover all construction operations, both onsite and offsite, and be keyed to the proposed construction sequence. The Contracting Officer reserves the right to conduct any inspections or perform any tests deemed necessary at any time during the execution of the contract to determine conformance with the requirements of these specifications.

Superintendent and QC shall be on site at all times while work is being done

1.6.10 Resident Management System (RMS)

The Contractor and Government shall use the Resident Management System (RMS) to assist in monitoring and administration of this contract. The Contractor’s roles as well as software details for the RMS system are outlined in the attachment titled “Attachment - Resident Management System Requirements”

1.6.11 WARRANTY

Submit sample certificates for approval.

1.6.11.1 Roof Membrane Manufacturer Warranty

Furnish roof membrane manufacturer's twenty (20) year, no dollar limit, full roof system materials and installation workmanship warranty, including all flashing, insulation, and accessory materials necessary to construct a complete, watertight roof system. Provide warranty directly to the Government and commence warranty effective date and time of Government's acceptance of the roof work. The warranty shall state that:

1) If within the warranty period the roof system, as installed for its intended use in the normal climatic and environmental conditions of the facility, becomes non-watertight, shows evidence of moisture intrusion within the assembly, splits, tears, cracks, delaminates, separates at the seams, or shows evidence of excessive weathering due to defective materials or installation workmanship, the repair or replacement of the defective and damaged materials of the roof system assembly and correction of defective workmanship shall be the responsibility of the roof membrane manufacturer. All costs associated with the repair or replacement work shall be the responsibility of the roof membrane manufacturer.

2) When the manufacturer and his approved applicator fail to perform the repairs within seventy-two (72) hours of notification, emergency temporary repairs performed by others shall not void the warranty.

1.6.12 Roofing System Installer Warranty

The roof system installer shall warrant for a minimum period of two (2) years that the roof system, as installed, is free from defects in installation workmanship, to include the roof membrane, flashing, insulation, accessories, all attachments, and sheet metal installation integral to a complete watertight roof system assembly. Write the warranty directly to the Government. The roof system installer is responsible for correction of defective workmanship and replacement of damaged or affected materials. The roof system installer is responsible all costs associated with the repair or replacement work.

1.7 PROJECT/SITE CONDITIONS

1.7.1 Reference Drawings

Attached Drawings, being provided as reference, showing existing conditions to the best knowledge of the Government. Unless otherwise noted, dimension, elevations, and other features shown on contract drawings, are generally based on the reference drawings supplemented by field surveys. The Government cannot guarantee the accuracy of the dimensions, elevations, and features shown on reference drawings or on contract drawings which are based on the reference drawings, and it shall be the responsibility of the Contractor, whenever necessary, to verify all elevations and the dimensions by measurements in the field. All elevations are referenced to the local datum used for the original construction of the structure. The Contractor shall verify elevations and dimensions before laying out the work. The Contracting Officer shall be notified of any discrepancies prior to commencing work.

1.7.2 Verification of Field Conditions

The Contractor shall verify all dimensions and conditions in the field and shall advise the Contracting Officer of any discrepancy before performing any work.

1.7.3 Work Areas

Unload and store the materials at the job site only in areas approved by the Contracting Officer. See plan sheet for designated laydown and storage area. Any deviations from this area must be approved by the Administrative Contracting Officer

(ACO).

The Contractor shall be fully responsible for determining the methods used to transport materials and equipment to and from the areas as well as the removal of waste materials from such spaces. The Contractor shall ensure that his operations will not interfere with the operation of the project or the duties of project personnel.

Transport of materials and equipment shall be the responsibility of the Contractor.

1.7.4 Period of Performance

The Contractor shall complete all work and associated cleanup and demobilization within 275 days or July 1, 2022, whichever occurs first.

1.7.5 Time of Performance

The Contractor shall confine all operations at the work site between the hours of 7:30 AM and 4:00 PM, Monday through Friday, unless otherwise approved by ACO/KO.

Work will not be permitted on weekends or Federal holidays unless otherwise approved by ACO or Contracting Officer (KO)

New Year's Day January 1 Martin Luther King Day Third Monday in January President's Day Third Monday in February Memorial Day Last Monday in May Juneteenth June 19 Independence Day July 4 Labor Day First Monday in September Columbus Day Second Monday in October Veterans Day November 11 Thanksgiving Day Fourth Thursday in November Christmas Day December 25

1.8 PROTECTION OF GOVERNMENT PROPERTY

The contractor shall protect all government property during the performance of this contract. All damage to existing government property as a result of the contractor’s work shall be repaired or replaced to the satisfaction of the Contracting Officer. Exposed roof and building interior shall be protected at all times. At areas where existing roofing materials have been removed, the contractor shall install and maintain temporary protection from the weather until permanent installation of roofing materials can be made. The Contractor shall coordinate roof demolition with the Contracting Officer.

The contractor shall coordinate with the Lock Master and ACO when removing equipment. All equipment unless otherwise stated or coordinated with the ACO and lockmaster must remain operational during the work. Work area shall be cleaned by the contractor after construction is complete.

1.9 INSPECTIONS AND ACCEPTANCE OF WORK

Notwithstanding other provisions of this contract, all materials and work to be performed under this contract shall be inspected and accepted by the Contracting Officer. The Contracting Officer shall be the individuals solely authorized to reject materials, disapprove or approve any work in progress, or order or direct any revision or change to the plans and specifications as presently shown and stated.

1.10 DISPOSAL

All materials removed in the performance of this contract and not reused shall become the property of the contractor and be disposed of offsite in accordance with Federal, State and Local regulations.

1.11 POINTS OF CONTACT

Prior to commencement of any work being performed on site, the contractor shall participate in a Pre-work Meeting with the Administrative Contracting Officer (ACO) and the Lockmaster on-site.

• Maxwell Locks and Dams Lockmaster – Eric Thelwis, 724-785-5027, Robert.Thewlis@usace.army.mil Administrative Contracting Officer (ACO) – Kirk McWilliams, 724-684-7462, Kirk.A.McWilliams@usace.army.mil

1.12 SECURITY REQUIREMENTS

1.12.1 Access and General Protection and Security Policy and Procedures

The contractor and all associated subcontractors' employees shall comply with applicable installation, facility, and area commander installation and facility access and local security policies and procedures (provided by the Government Representative). The Contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the installation the USACE Security Office. The Contractor workforce must comply with all personal identity verification requirements as directed by DoD, HQDA, and/or local policy.

In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security matters or processes. The contractor must submit the full name, Social Security Number, and Date of Birth for all associated contractor or subcontractor employees to the USACE Security Office, Joseph M. Bali, 412-395-7162, joseph.m.bali@usace.army.mil. LRP Security Information Sheet, (Attachment: LRP Security Information Sheet) is to be completed and returned to Mr. Bali. The contract number and title of the project including the location is to be identified on the Sheet.

To protect employee PII, the submission of the completed form through a secure fax mailto:Kirk.A.McWilliams@usace is preferred; however, a secured email is acceptable. If e-mailing required information, e-mail must be encrypted to protect Personally Identifiable Information (PII). The District retains the right to deny any contractor and subcontractor employee from working on one of its contracts based on final background investigation results.

The contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB), applicable installation, facility and area commander installation/facility access and local security policies and procedures.

1.12.2 Instant Verification of Employment Eligibility (E-Verify)

The Contractor must pre‐screen Candidates using the E‐verify Program (http://www.uscis.gov/e-verify ) website to meet the established employment eligibility requirements. The Vendor must ensure that the Candidate has two valid forms of Government issued identification prior to ensure the correct information is entered into the E‐verify system. An initial list of verified/eligible Candidates must be provided to the KO no later than three (3) business days after notice to proceed.

1.12.3 Employee Identification and Background Check

The Contractor shall be responsible for furnishing an identification badge/card to each employee prior to the employee working on-site and for requiring each employee engaged on the work to display identification. Identification shall consist of nametags with the name of the Contractor and the employee's name. Additionally, a valid state driver's license or other Government-issued photo identification card is required for positive identification. Each employee shall be subject to a background check in accordance with "Homeland Security Presidential Directive (HSPD) 12: Policy for a Common Identification Standard for Federal Employees and Contractors" (HSPD- 12).

Only those individual employees that were specifically identified and approved shall be cleared to work on Government property. All contract employees, including subcontractor employees who are not in possession of the appropriate security clearance or access privileges, will be escorted in areas where they may be exposed to classified and/or sensitive materials and/or sensitive or restricted areas.

1.13 USACE ACQUISITION INSTRUCTIONS (UAI)

1.13.1 UAI 5122.1302-100 VETERANS EMPLOYMENT EMPHASIS FOR

U.S. ARMY CORPS OF ENGINEERS CONTRACTS

In addition to complying with the requirements outlined in FAR Part 22.13, FAR Provision 52.222-38, FAR Clause 52.222-35, FAR Clause 52.222-37, DFARS

222.13 and Department of Labor regulations, U.S. Army Corps of Engineers (USACE) contractors and subcontractors at all tiers are encouraged to promote the training and employment of U.S. veterans while performing under a USACE contract. While no set-aside, evaluation preference, or incentive applies to the solicitation or performance under the resultant contract, USACE contractors are encouraged to seek out highly qualified veterans to perform services under this contract. The following resources are available to assist USACE contractors in their outreach efforts:

U.S. Department of Labor Veterans’ Employment and Training Service (VETS): https://www.dol.gov/vets/

Federal Veteran Employment Information: https://www.fedshirevets.gov/

Veterans' Employment and Training Service (VETS):

http://www.dol.gov/vets/

Veterans Opportunity to Work (VOW) Program:

https://www.benefits.va.gov/vow/

U.S. Army Warrior Transition Command Employment Index:

https://wct.army.mil/modules/employers/index.html

Hiring Our Heroes:

https://www.uschamberfoundation.org/hiring-our-heroes

2. MATERIALS

2.1 Single-ply EPDM Membrane

Ethylene Propylene Diene Terpolymer (EPDM), ASTM D4637/D4637M, Type I, non-reinforced, 0.090-inch nominal thickness for fully adhered application. Provide membrane with minimum thickness not less than minus 10 percent of the specified thickness value. Principal polymer used in manufacture of the membrane sheet must be greater than 95 percent EPDM. Provide a fully adhered rubber roof system.

2.1.1 Splices and Laps

Contractor shall use manufacturer recommended double sided seam tape, or where allowed, lap splice adhesive, for watertight bonding of EPDM sheet materials to each other for the application specified and conditions encountered. Seam tape or synthetic rubber adhesive shall be as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data.

2.1.2 Bonding Adhesive

Bonding adhesive shall be as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data for bonding EPDM membrane materials to insulation, wood, metal, concrete or other substrate materials. Bonding adhesive shall not be used to bond membrane materials to each other.

https://www.dol.gov/vets/ https://www.fedshirevets.gov/ http://www.dol.gov/vets/ https://www.benefits.va.gov/vow/ https://wct.army.mil/modules/employers/index.html https://www.uschamberfoundation.org/hiring-our-heroes

2.1.3 Pre-manufactured Accessories

Pre-manufactured accessories shall be manufacturer's standard for intended purpose, must comply with applicable specification section, be compatible with the membrane roof system and approved for use and supplied by the EPDM roof membrane manufacturer.

2.2 Roof Insulation

Ensure insulation system and facer material is compatible with membrane application specified and as approved by the roof membrane manufacturer. Provide a rigid, tapered roof insulation panel composed of a closed-cell Polyisocyanurate foam core bonded on each side to fiber-reinforced paper facers. Provide all appropriate fasteners for each deck type on the project that is recommended by the Manufacturer. Panels are installed smoothly and evenly, and are not broken, cracked, or curled. There are no gaps in insulation panel joints exceeding 1/4 inch in width. Insulation shall be roofed over on the same day the insulation is installed per the Manufacturer’s Recommendations.

2.3 Flashing

Lead, lead-coated metal, and galvanized steel shall not be used. Materials shall match or be similar to the existing adjacent materials for compatibility. Accessories and other items essential to complete the sheet metal installation, though not specifically indicated or specified, shall be provided.

2.3.1 Aluminum Extrusions

ASTM B 221M ASTM B 221, Alloy 6063, Temper T5.

2.3.2 Membrane Flashings and Flashing Accessories

Provide membrane flashing, including self-adhering membrane flashing, perimeter flashing, flashing around roof penetrations, and prefabricated pipe seals, that is minimum 0.045 inch cured EPDM, as recommended by the roof membrane manufacturer or minimum 0.055 inch thick uncured EPDM sheet in compliance with ASTM D4811/D4811M, Type I. Use cured EPDM membrane to the maximum extent recommended by the roof membrane manufacturer. Limit uncured flashing material to reinforcing inside and outside corners and angle changes in plane of membrane, and to flash scuppers, pourable sealer pockets, and other formed penetrations or unusually shaped conditions as recommended by the roof membrane manufacturer where the use of cured material is impractical.

2.4 SEALANT

Elastomeric sealants shall conform to ASTM C 920 and the following:

a. Polysulfide Sealant: Type S, Grade NS, Class 25, Use NT, A.

b. Polyurethane sealant: Grade NS, Class 25, Use NT, A.

c. Silicone sealant: Type S, Grade NS, Class 25, Use NT, A.

2.5 POLYVINYL CHLORIDE (PVC) REGLETS

ASTM D 1784, Class 14333D, 1.9 mm 0.075 inch minimum thickness

3. EXECUTION

3.1 Roof Inspection

Contractor is required to conduct a general roof inspection with ACO present to identify any deficiencies before project closeout. Upon completion of the inspection, the contractor is required to submit an inspection report including professional recommendations and sketches, as required by ACO for review.

3.1.1 Leak test

Contractor shall perform a functional inspection of the roof drain lines. A functional inspection will require the contractor to fill the drainpipes with water and check for leaks. The contractor and ACO will inspect the drain line for leakage. Drain lines 1 foot below ceiling surface shall be operational with no leaks at the end of the contract.

3.2 Operations Roof

Contractor shall remove existing roof system down to the deck, i.e.-membrane, stone ballast, built up roof below existing membrane, insulation, etc. Contractor shall prepare existing sub-surface IAW manufacture’s installation instructions. Contractor shall replace drains and drainpipes from 1 foot below ceiling surface to the drain on the roof surface.

Contractor shall ensure there are no gaps in insulation board joints exceeding ¼ inch in width. Insulation shall be roofed over on the same day the insulation is installed and installed per the Manufacturer’s Recommendations. Contractor understands that any nonconformance with the provisions subjects the insulation to removal and replacement.

Contractor shall install a single ply fully adhered 0.090 inch EPDM membrane roof system to include, but not limited to, insulation, drains, membrane, flashing in compliance with the manufacturer’s warranty requirements and the National Roofing Contractors Association (NRCA) roofing manual. Contractor shall seal the EPDM around all existing items that protrude thru or from the roof IAW manufacturer’s installation instructions.

Contractor shall remove an unused vent penetration. The vent piping and all associated materials shall be removed. Pipe support bracket shall remain. An adequate patch shall be made to the deck before re-roofing the area. See reference photos for details.

Contractor shall supply the ACO with flashing details to include manufacturer’s product details, product specification and any installation considerations for the roof prior to beginning work. Contractor shall supply shop fabricated corners for aluminum flashing.

No mitered corners shall be made in the field without prior approval of the ACO, and at the ACO’s discretion. The contractor shall supply a workmanship sample of field fabricated flashing corners to the ACO for approval.

3.3 Maintenance Building Roof

Contractor shall remove existing roof system down to the deck i.e.-membrane, built up roof below existing membrane, insulation, etc. Contractor shall prepare existing sub-surface IAW manufacture’s installation instructions. Contractor shall replace drains and drainpipes from 1 foot below ceiling surface to the drain on the roof surface.

Contractor shall ensure there are no gaps in insulation board joints exceeding ¼ inch in width. Insulation shall be roofed over on the same day the insulation is installed and installed per the Manufacturer’s Recommendations. Contractor understands that any nonconformance with the provisions subjects the insulation to removal and replacement.

Contractor shall install a single ply fully adhered 0.090 inch EPDM membrane roof system to include, but not limited to, insulation, drains, membrane, flashing in compliance with the manufacturer’s warranty requirements and the National Roofing Contractors Association (NRCA) roofing manual. Contractor shall seal the EPDM around all existing items that protrude thru or from the roof IAW manufacturer’s installation instructions.

Contractor shall supply the ACO with flashing details to include manufacturer’s product details, product specification and any installation considerations for the roof prior to beginning work. Contractor shall supply shop fabricated corners for aluminum flashing.

No mitered corners shall be made in the field without prior approval of the ACO, and at

3.4 Service Building Roof

Contractor shall remove existing roof system down to the deck i.e.-membrane, stone ballast, built up roof below existing membrane, insulation, etc. Contractor shall prepare existing sub-surface IAW manufacture’s installation instructions. Contractor shall replace drains and drainpipes from 1 foot below ceiling surface to the drain on the roof surface.

Contractor shall ensure there are no gaps in insulation board joints exceeding ¼ inch in width. Insulation shall be roofed over on the same day the insulation is installed and installed per the Manufacturer’s Recommendations. Contractor understands that any nonconformance with the provisions subjects the insulation to removal and replacement.

Contractor shall install a single ply fully adhered 0.090 inch EPDM membrane roof system to include, but not limited to, insulation, drains, membrane, flashing in compliance with the manufacturer’s warranty requirements and the National Roofing Contractors Association (NRCA) roofing manual. Contractor shall seal the EPDM around all existing items that protrude thru or from the roof IAW manufacturer’s installation instructions.

Contractor shall supply the ACO with flashing details to include manufacturer’s product details, product specification and any installation considerations for the roof prior to beginning work. Contractor shall supply shop fabricated corners for aluminum flashing.

No mitered corners shall be made in the field without prior approval of the ACO, and at

3.5 Control Shelter Roofs

Contractor shall remove existing roof system down to the deck i.e.- stone ballast, built up roof, insulation, etc. Contractor shall prepare existing sub-surface IAW manufacture’s installation instructions. Contractor shall replace entire drain systems, and drainpipes down to the existing middle wall slab. Drainpipe shall be manufactured of PVC, ABS or similar compatible material to new drains.

Contractor shall ensure there are no gaps in insulation board joints exceeding ¼ inch in width. Insulation shall be roofed over on the same day the insulation is installed and installed per the Manufacturer’s Recommendations. Contractor understands that any nonconformance with the provisions subjects the insulation to removal and replacement.

Contractor shall install a single ply fully adhered 0.090 inch EPDM membrane roof system to include, but not limited to, insulation, drains, membrane, flashing in compliance with the manufacturer’s warranty requirements and the National Roofing Contractors Association (NRCA) roofing manual. Contractor shall seal the EPDM around all existing items that protrude thru or from the roof IAW manufacturer’s installation instructions.

Contractor shall supply the ACO with flashing details to include manufacturer’s product details, product specification and any installation considerations for the roof prior to beginning work. Contractor shall supply shop fabricated corners for aluminum flashing.

No mitered corners shall be made in the field without prior approval of the ACO, and at

Maxwell L&D Roof Photos

General view of the Operations Building roof, looking Upstream towards the land wall.

View of the operations building roof looking towards the river chamber.

View of the operations building facing upstream.

View of the operations building roof looking downstream towards land wall.

Close up view of existing roof drain, to be replaced.

View of the Operations building roof, facing the dam. Note the antenna mounted to the vent stack.

Cabling routed through vent stack, to remain in place during roof replacement.

Close up of drain system, (typ).

Operations building, unused exhaust penetration, center. Remove completely and provide adequate patch to decking before re-roofing over the area.

Interior view of exhaust vent in Operations, to be removed by contractor. Pipe hanger may remain. In aft, see drainpipe, replace two 90 degree sweeps and all piping 1 foot below roof line. Entire drain system from roof to below the 90 degree elbows to be replaced.

Existing tear and dry rot of membrane roof, with original built up roof below (typ). Both membrane roof and built up roof to be removed to decking.

Close up view of flashing and edge of roof, service building. (typ)

View of service building roof, facing dam.

View of service building roof, facing upstream. All penetrations shown to remain.

View of service building roof.

View of service building roof, tears near roof edge (typ).

Service building edge flashing, to be replaced.

View of Maintenance building roof.

View of Maintenance building roof drain.

View of maintenance building roof penetration. Flash all penetrations per manufacturers and NRCA recommendations.

LOMR system, contractor shall remove from roof during construction.

Close view of LOMR system, contractor shall remove from roof during construction. The system does not have to remain in operation, and the antenna array does not have to be replaced after construction.

View of Control shelter roof.

Alternate view of control shelter roof.

Additional view of control shelter roof.

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