Amendment0002_SpecChanges.pdf

Repair Roof, Barnes Building, Boston MA Amendment 0001

1.1 CHANGES TO SPECIFICATIONS

1.1.1 Revised Sections

1. The specification sections listed below are deleted and replaced with revised sections of the same section number. Changes in the text are indicated by additions and deletions. Added text is identified by underscoring and deleted text is identified by overstrike. The revised specification sections are attached.

01 11 00 SUMMARY OF WORK

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

2. New information has been attached at the end of each of the revised specification section listed above, as follows:

a. Section 01 11 00 SUMMARY OF WORK; photographs of roof mounted air conditioning units and the results of an infrared thermographic roof moisture analysis performed on the Barnes Building.

b. 01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS; an aerial photograph of the project site and adjacent properties showing locations of buildings, parking lots, and the designated Contractor parking area.

DOCUMENT 00 00 01 Page 2

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

1.1.1 Roof Photographs

1.1.2 New Roof Mounted Air Conditioning Units

1.1.3 Infrared Thermographic Roof Moisture Analysis

1.2 SUBMITTALS

1.3 PROJECT/SITE CONDITIONS

1.3.1 Site Security

1.4 WORK SEQUENCE AND SCHEDULING

1.4.1 Hours of Operations

1.4.2 Work Sequence

1.4.2.1 General

1.4.2.2 Initial Project Schedule

1.4.2.3 Periodic Schedule Updates

1.4.3 Organization at the Site

1.4.3.1 General

1.4.3.2 Rate of Progress

1.5 CONTRACTOR USE OF PREMISES

1.5.1 Storage Areas

1.5.2 Access, Work Limits and Work Plan

1.5.2.1 Work Limits and Building Access

1.5.2.2 Security at the Loading Dock Entrance

1.5.2.3 Exterior of Building; Restrictions

1.5.2.4 Barnes Building Alley

1.5.2.5 Work Plan

1.5.3 Contractor's Receipt of Supplies

1.6 PRECONSTRUCTION CONFERENCE

1.7 RECORD DRAWINGS

1.7.1 Preparation of Record Drawings

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

-- End of Section Table of Contents --

SECTION 01 11 00 Page 1

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

The general description below is given to indicate the approximate scope of this project only. It does not limit the work required under the project drawings and specifications.

This work of this project involves specific repairs and reinforcement to the roof of the Barnes Building in Boston, Massachusetts. The Barnes Building is a 50,000 square foot, 10-story office building in a dense urban area exposed to coastal storms and high winds. The existing roofing system is a fully adhered Ethylene-Propylene-Diene-Monomer (EPDM) system which was damaged during Hurricane Irene and during recent storm events. Some minor repairs and patching were performed after Hurricane Irene and after recent storms. Damages include partial separation of the EPDM from insulation substrates, partial separation of the EPDM from the perimeter parapet wall, water penetration below the EPDM into insulation layers, and other damages and general age deterioration. High wind events have caused the EPDM to balloon over large areas of the roof, worsening existing deterioration, and threatening to completely separate the EPDM from substrate material, creating a potential hazard in adjacent areas.

Specific work tasks are intended to reconstruct severely deteriorated areas and to secure the remaining existing EPDM and substrate materials in place. These tasks include inspecting the existing roof for any breaks and holes in the membrane and patching them, full depth roof repair (new insulation and EPDM) in limited areas, reattachment of the EPDM to the perimeter parapet wall, caulking, and installing a sandbag ballast and wrap and tie system at selected locations on the roof. Walk mats are also required in select areas.

The work is required to be constructed by the Contractor with limited interior access to the building, i.e., the Contractor will have access to the freight elevator and loading dock areas only. The freight elevator shall be used only for the movement of personnel and tools and equipment.

The freight elevator does not reach roof level, and personnel and materials needing to reach the roof will need to climb one flight of narrow stairs after exiting the freight elevator at its highest level. In addition, the Contractor will not be permitted to attach scaffolding or lift systems to the exterior cladding of the building, the roof parapet wall, or other exterior building elements. Storage and staging is available for the Contractor adjacent to the work site.

1.1.1 Roof Photographs

Attached at the end of this section are photographs showing two new roof mounted air conditioning units. Photographs are for information only and there is no guarantee that conditions depicted in the photographs will exist at the time of the work. The Contractor shall make his own investigation of project conditions.

SECTION 01 11 00 Page 1

1.1.2 New Roof Mounted Air Conditioning Units

Two new roof mounted air conditioning units, as shown in the photographs attached at the end of this section, are located at the intersection of Column Line 15 and Column Line E as shown on Contract Drawing A-104. This is an area requiring full depth roof repair, and the Contractor shall be responsible for removal of the two units to repair the roof and to reinstall the units after the roof repair in that area is complete. The Contractor shall minimize the time in which the air conditioning equipment is placed out of service to the maximum extent practicable, but in no case shall the out of service time exceed 14 calendar days. The out of service period shall be coordinated with the Contracting Officer at least 30 days in advance.

1.1.3 Infrared Thermographic Roof Moisture Analysis

An infrared thermographic roof moisture analysis was conducted by Infra-red Analyzers, Inc., in November 2013. The purpose of the procedure was to locate areas of wet insulation within the flat roofing system. A report of the procedure, analysis, and results are attached at the end of this section.

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Initial Project Schedule; G, RO

In accordance with the contract clauses, the Contractor shall, within 5 days after receipt of Notice to Proceed (NTP) or as otherwise determined by the Contracting Officer, submit for approval a practicable project schedule. When changes are authorized that result in contract time extensions, the Contractor shall submit a revised project schedule for approval by the Contracting Officer.

Work Plan; G, RO

Exterior Lift Plan; G, RO

SD-07 Certificates

Periodic Schedule Updates; G, RO

Request Application; G, RO

Request Application to work outside the hours of operation.

SD-11 Closeout Submittals

Record Drawings; G, DO

Record drawings showing all deviations which have been made from

SECTION 01 11 00 Page 2 the contract drawings shall be submitted to the Contracting Officer for approval at the completion of work. See paragraph RECORD DRAWINGS for record keeping and submittal requirements.

1.3 PROJECT/SITE CONDITIONS

1.3.1 Site Security

The Contractor shall report any vandalism, suspicious activities or devices to the Contracing Officer or local police as soon as possible. The Contracting Officer will notify the Contractor of any heightened security measures and will expect vigilant monitoring of equipment, grounds and security fencing while working. At a heightened security posture, there may be work areas that are restricted. The Contracting Officer will notify the Contractor of these restricted areas, and work may be delayed or restricted or will be performed in these areas under the direct supervision of U.S. Army Corps of Engineers personnel.

1.4 WORK SEQUENCE AND SCHEDULING

1.4.1 Hours of Operations

Normal work hours are from 6:00 a.m. through 6:00 p.m., Monday through Friday. The Contractor will not be permitted to work on Saturday, Sunday or legal holidays unless otherwise authorized by the Contracting Officer.

The exclusion of work on Saturday, Sunday and legal holidays has been considered in computing the performance time of this contract. The following legal holidays are observed:

January 1st Third Monday in January Third Monday in February Last Monday of May July 4th 1st Monday of September 2nd Monday of October 11th of November Fourth Thursday of November 25th of December

When one of the above designated legal holidays falls on a Sunday, the following Monday will be observed as a legal holiday. When a legal holiday falls on a Saturday, the preceding Friday is observed as a holiday.

Requests to perform work at other times shall be made in writing to the Contracting Officer. Every effort will be made to accommodate such requests.

Work outside the normal hours of operation requires Contracting Officer approval. The request to work outside the hours of operation shall be made in writing to the Contracting Officer 10 calendar days prior to such work to allow arrangements to be made by the Government. The request application shall include specific dates, hours, location, type of work to be performed, contract number and project title, and names of all individuals who will be working outside the hours of operations.

SECTION 01 11 00 Page 3

1.4.2 Work Sequence

1.4.2.1 General

There are certain essential criteria relative to the preparation of a work sequence and time schedule which the Contractor will be required to implement and follow during the prosecution of the work. Minor variations in the sequence of the items of work as specified may be made by the Contractor, provided such variations do not conflict with critical elements of the schedule. Proposed minor variations shall be noted on the progress charts submittal required by CONTRACT CLAUSE, entitled "SCHEDULES FOR CONSTRUCTION CONTRACTS". Variations shall be approved by the Contracting Officer prior to implementation.

1.4.2.2 Initial Project Schedule

The initial project schedule shall be in the form of a chart graphically indicating the sequence proposed to accomplish each work feature or operation. The chart shall be prepared to show the starting and completion dates of all work features on a linear horizontal time scale beginning with date of Notice to Proceed and indicating calendar days to completion. The Contractor shall indicate on the chart the important work features or operations that are critical to the timely overall completion of the project. Key dates for such important work features and portions of work features are milestone dates and shall be so indicated on the chart. This schedule will be the medium through which the timeliness of the Contractor's construction effort is appraised. Anticipated adverse weather delay days shall be included in the schedule.

1.4.2.3 Periodic Schedule Updates

An updated schedule showing actual progress shall be submitted monthly or with each pay request. Changes to the base-line schedule shall be outlined in a narrative describing the reason for the change.

1.4.3 Organization at the Site

1.4.3.1 General

The Contractor shall employ ample personnel and sufficient equipment to accomplish the work of this contract in the least amount of time, within the prosecution period specified in SPECIAL CONTRACT REQUIREMENTS, Clause 1.1.

1.4.3.2 Rate of Progress

Should the Contractor fail to maintain a satisfactory rate of progress in accordance with the Contractor's approved progress schedule, the Contracting Officer may require that additional personnel and equipment be placed on the work and weekend and overtime work be performed, in order that the work be brought up to schedule and maintained.

1.5 CONTRACTOR USE OF PREMISES

1.5.1 Storage Areas

See Section 01 50 00 TEMPORARY CONSTRUCTION FACILITIES for information on storage areas available for use by the Contractor.

SECTION 01 11 00 Page 4

1.5.2 Access, Work Limits and Work Plan

1.5.2.1 Work Limits and Building Access

Work shall be restricted to the roof of the Barnes Building and to storage and staging areas assigned to this Contractor. Due to security and logistic restrictions, the work is required to be constructed by the Contractor with limited interior access to the building, i.e., the Contractor will have access to the freight elevator and loading dock areas and entrance only. The freight elevator shall be used only for the movement of personnel, tools, supplies, and equipment. The freight elevator does not reach roof level, and personnel and materials requiring roof access will need to travel up one flight of narrow stairs to reach the roof after exiting the freight elevator at its highest level on the ninth floor.

1.5.2.2 Security at the Loading Dock Entrance

The ground level entrance to the loading dock and freight elevator area is a secured area and all Contractor personnel desiring entrance to the building will be required to sign in at the manned Security Desk and receive a visitor badge. After receiving the badge, personnel may proceed to the freight elevator and roof unescorted. At the end of each work day, visitor badges shall be returned to the guard at the Security Desk. This procedure is required for each person and each day of required access to the building.

1.5.2.3 Exterior of Building; Restrictions

The Contractor will not be permitted to attach scaffolding or lift systems to the exterior curtain wall of the Barnes building, the roof parapet wall, or other exterior features of the building. The spandrel beams may be used for attachment of such systems, if the curtain wall is removed. If the Contractor proposes to use exterior lifts and/or scaffold systems to move materials from ground level to the roof, submission and approval of a written plan by the Contractor prior to implementation of the system is required. The plan shall include a narrative, drawings, and calculations sufficient to fully describe the lift system to be placed in service. The Exterior Lift Plan shall be coordinated with the Contracting Officer and Barnes Building maintenance personnel during development to identify suitable locations and methods. The Exterior Lift Plan, if needed, may be combined with the Work Plan described below.

1.5.2.4 Barnes Building Alley

The alley between the Barnes Building and the neighboring Fargo Building will be available to the Contractor for location of cranes and the exterior lift, if desired, but not on an exclusive basis. This alley is heavily used by tenants of the adjacent Fargo Building, and the Contractor's use of this alley shall not interfere with these daily operations.

1.5.2.5 Work Plan

The Contractor shall submit a Work Plan to address the system to be used to transport personnel, materials, and equipment from ground level to the roof, whether that system includes the freight elevator, exterior lifts and/or scaffolds, cranes, other methods, or some combination of methods.

The Work Plan shall also address the stockpiling, transport, and distribution of materials on the roof itself. Particular attention shall

SECTION 01 11 00 Page 5 be placed on the plan to distribute the filled sand bags as they arrive at roof level, either in loose form (pyramid) or on palettes. Proper temporary padding to prevent roof membrane damage shall be provided. The Contractor shall provide temporary padding allowing distribution of sandbags from temporary storage areas into designated areas, protecting the roof membrane and all permanent roof elements. The Work Plan shall include a narrative, drawings, and calculations sufficient to fully describe these items. No sand bags shall be transported to roof level prior to the approval of the Work Plan.

1.5.3 Contractor's Receipt of Supplies

The Contractor shall be responsible for all arrangements for the receipt of materials and supplies at the job site. Government personnel are not permitted to receive or sign for items delivered to the site.

1.6 PRECONSTRUCTION CONFERENCE

The Contracting Officer will conduct a preconstruction conference with key Contractor personnel. The purpose of the conference is to review contract requirements and to establish a working relationship between the Contractor's Staff and the Corps of Engineers personnel who will be closely associated with the project. During the conference, the Contracting Officer will inform the Contractor concerning Job Safety, Quality Control, Labor Relations, and Environmental Protection. The Contractor's Superintendent, Quality Control Representative, and Site Safety and Health Officer (SSHO) shall attend this conference. All submittals which are ready for submission prior to start of work may be brought to the conference for distribution to the participating reviewers.

1.7 RECORD DRAWINGS

Maintain at the jobsite one set of full-size contract drawings marked to show all deviations which have been made from the contract drawings, including buried or concealed construction and utility features revealed during the course of construction. Record the horizontal and vertical location of all buried utilities that differ from the contract drawings.

These drawings shall be available for review by the Contracting Officer at all times. Upon completion of the work, submit the original marked set of prints to the Contracting Officer for approval. Requests for partial payments will not be approved if the marked prints are not current, and request for final payment will not be approved until the marked prints are submitted to and approved by the Contracting Officer.

1.7.1 Preparation of Record Drawings

The entries shall be made in the jobsite set of prints at the time field changes are made, pertinent information collected, or need for corrections established, as a continuing process during the life of the contract. As revised drawings are issued by the Contracting Officer, revised prints shall be introduced into the set to replace the superseded drawings and all applicable notations previously made on the superseded drawings transferred to the current prints. Carefully prepared sketches, not less than 8-1/2" x 11", may be used to depict changes or added information in lieu of notations on the actual prints. Staple sketches to the prints affected by the change. All plan views, sections, elevations, profiles, diagrams, details, or schedules affected by a change shall be marked up as required to reflect the change. All notations or changes made on the prints shall be in sufficient detail to clearly depict the change. Colored pens or

SECTION 01 11 00 Page 6 pencils shall be used to make notations on the record prints as follows:

Red pen or pencil shall be employed to indicate added or corrected work or information.

Green pen or pencil shall be used to show the deleted or incorrectly depicted work or information.

Blue or black pen or pencil shall be used to show information not to be recorded on the drawings but included on the marked-up prints for explanatory or clarification purposes for the benefit of the Contracting Officer.

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

-- End of Section --

SECTION 01 11 00 Page 7

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Roof Mounted Air Conditioning Units to be Temporarily Removed by Contractor

PERFORMED FOR: US Army Corps of Engineers 696 Virginia Rd.

Concord, MA 01742

LOCATION: Barnes Building Boston, MA

CONDUCTED ON: 11-5-2013

REQUESTED BY: Bogdan Figiel

PERFORMED BY: Bill Rundle, Certified Thermographer

Infra-red Analyzers, Inc.

65 Lyman Drive Williston, VT 05495

(800) 879-1964

Nationwide Service Since 1984

I. Introduction

II. Weather Conditions

III. Infrared Thermography

IV. Instrumentation

V. Survey Procedures

VI. Findings

VII. Appendix A: Roof Construction, Core Sample Analysis

VIII. Roof Maps

Table of Contents

Survey location: Barnes BuildingPerformed for: US Army Corps of Engineers

Dear Bogdan, This report summarizes the findings of our Infrared Roof Moisture Analysis at Barnes Building, Boston, MA, performed on 11-5-2013.

Included in this report are AutoCAD® maps of the inspected roofing. All water-damaged areas are marked on the maps. The wet areas and the locations of the core samples are marked directly on the roof with long-lasting spray paint. This report also includes descriptions of Infrared

Thermography, as well as roof construction details, survey procedures and the weather conditions on the date of the infrared testing.

11/12/2013

Bogdan Figiel US Army Corps of Engineers 696 Virginia Rd.

Concord, MA 01742 Barnes Building

The Roof Moisture Analysis was performed on 11-5-2013. During the day on 11-5-2013, the weather was mostly sunny, with moderate winds and a high temperature of approximately 53 °F.

At night the sky was partly cloudy, with moderate winds and an ambient nighttime temperature of approximately 46 °F.

WEATHER CONDITIONS

All objects emit heat (i.e. infrared radiation). This radiation is constantly being absorbed and re-emitted by ourselves and everything around us. “Infrared scanning” and “thermography” are the terms used to describe the process of making this thermal radiation visible and capable of interpretation.

Infrared Roof Moisture Analysis locates areas of wet insulation within a flat roofing system.

These areas of wet insulation can be pinpointed with the infrared scanner because wet and dry insulations have different abilities to absorb, conduct and retain heat. The thermal differences between wet and dry insulation are especially evident under two sets of circumstances.

First, wet roof insulation absorbs much more heat than dry insulation. Moisture-damaged insulation also stores more heat over a longer period of time than intact, dry materials. During the day, the sun’s heat raises the temperature of wet insulation in the roofing system. As the roof cools off at night, the areas of wet insulation will stay warm longer than the dry areas. During the evening, this stored “solar gain” is released as radiant heat that is detectable with the infrared camera. As the evening progresses, areas of wet insulation will appear warmer to the camera than adjacent dry roofing.

Second, when there is a significant difference in ambient temperature between the interior and exterior of the building, heat losses from inside the building will be greater through the wet areas due to the reduced R-value of the wet insulation. This is especially true during the heating season. In both instances, when viewed from the roof side, wet insulation will show up as warmer in the infrared image. Often these two phenomena work together, creating strong, long-lasting thermal images that clearly illustrate the differences between wet and dry insulation.

INFRARED THERMOGRAPHY

Our Infrared cameras can also be used in a variety of other Non-Destructive testing applications:

● Infrared Electrical/Mechanical Inspections pinpoint developing problems in power delivery systems. The infrared scanner can “see” hot spots where there are going to be failures, before they happen. This Predictive Maintenance approach provides for time to repair these problem areas before they cause equipment damage, unscheduled outages, and downtime. Problem areas are pinpointed, prioritized and fully documented.

● Infrared Steam System Inspections pinpoint failing steam traps, malfunctioning heat exchangers and boiler problems. These surveys can save thousands of dollars by reducing energy usage.

● Infrared Building Envelope Analysis locates and documents building heat loss problems, including sources of mold, drafts, and excess moisture. Infrared thermography is the only non-destructive and complete system for locating the causes of frozen pipes, ice dams, missing or wet insulation and high heating costs. Infrared Building Envelope Surveys provide valuable performance data for newly constructed buildings and energy retrofits.

We use top-quality instruments when performing your Roof

Moisture Analysis. The high-resolution ThermaCAM®

PM390, one of the most sensitive and sophisticated scanners available, is able to resolve temperature differences as small as 0.1 degree Centigrade. The system includes a digital infrared camera with a color viewfinder and captures images and temperature data to digital tape and/or flash memory cards.

Thermographic image from infrared camera Control image, wet sections marked for removal

INSTRUMENTATION

The camera unit receives infrared radiation from the object being surveyed and converts it to an electrical signal that is instantaneously displayed on the color viewfinder. This high-resolution thermal image is then interpreted by Infra-red Analyzers' Certified Thermographers.

The Infra-red Analyzers Certified Thermographers followed defined survey procedures when inspecting your roof.

GUIDELINES: Every square foot of roofing in the contract was scanned a minimum of two times. Wet areas were marked directly on the roof with long-lasting spray paint. Invasive testing was employed to confirm the presence of moisture and tested locations were marked on the surface.

VERIFICATION: Infrared Thermography is a powerful tool for Nondestructive Testing of flat roofing systems. However, to insure complete accuracy of the survey results, it is necessary to physically verify the presence of moisture within the roofing system. In all, 2 core samples were taken on the roof to verify the test findings.

ThermaCam® PM390 Specifications

Detector

Spectral band

Sensitivity (NETD @ 30°C)

Temperature measurement range

Focus range

FOV (DEG) 16 degree lens, f/1.5

PtSi/CMOS 256 x 256 FPA with variable integration (> 65,000 image elements)

3.4 to 5 µm

< 0.1°C

-10 to 1500°C

9" to infinity

17 horizontal x 16 vertical

SURVEY PROCEDURES

CORE SAMPLES: When taking a core sample, the Thermographer typically extracts a small section of the roof down to the roof deck.

This allows for a complete physical examination of all construction details and roofing materials. The only exception to this practice is when core samples are taken in areas of wet roofing. In these instances, the Thermographer will usually not cut the vapor retarder or bottom roof, as this may allow water to leak into the building.

A core sample of the roof may be taken for several different reasons. First, the insulation can be physically inspected to determine its condition and if it is wet or dry. Second, core samples provide invaluable information about the construction of the roofing system. Of particular interest to the Thermographer is the type and thickness of the membrane, insulation type and thickness, possible presence of vapor retarder, if any, and type of decking and condition of the deck in the area cored. All core sample sites were filled and sealed using the standard repair techniques approved by the National Roofing Contractors’ Association. For information about the roof's construction, see Appendix A: Core Analysis.

BOUNDARIES: Every effort is made to have the lines painted on the roof indicate accurately the boundaries of the wet insulation. However, the non-destructive nature of the testing can sometimes result in small inaccuracies. Therefore, the Technician will generally mark outside the wet area by about 6" to 12" to provide a reasonable margin of error. In other instances, it may be advisable to calculate a slightly larger area of insulation than what is actually painted on the roof. Additionally, the way water migrates through insulation may not be homogeneous, and it may happen that there are a few square feet of dry insulation within the boundaries of the larger wet area. As a practical matter, these small dry spots are not significant, and the

Technician will just define the overall boundaries of the wet area.

MAPPING: After all the scanning and verification were completed, the roof was mapped. A draft copy of your drawing was made at the site, documenting all the information generated during the inspection. A final copy of the map was plotted in the office using an AUTOCAD® system. Please note that the measurements displayed in these maps should not be used as a substitute for as-built drawings.

FINDINGS

As per our survey procedures, the entire roof area in the contract was scanned a minimum of two times. A total of 18 areas of wet insulation were detected in the inspected roofing.

Some areas of the tested roofing are designated RIM (Randomly Interspersed Moisture). RIM areas contain some areas of dry roofing broken up by numerous areas of moisture damage.

While there is dry roofing in these areas, as a practical matter it is impossible to salvage these dry areas because of the many pockets of Randomly Interspersed Moisture. Therefore we have outlined the entire area that contains both wet and dry insulation.

The total size of the inspected roofing is approximately 55,696 square feet. The total amount of wet insulation equals approximately 11,978 square feet. The amount of wet insulation is approximately 21.5% of the total inspected roof area. These areas of wet insulation are marked directly on the roof and on the maps provided. Please refer to these maps when reviewing the report.

The table below represents the findings by roof section and total area tested.

55,696 11,978 21.5 %Barnes Building: Main roof

Roof Section Approx.

Roof Area (sf) Approx.

Wet Area (sf) Approx.

Wet Area (%)

55,696Totals: 11,978 21.5 %

Table of Findings

ROOF MAPS

The last part of this report contains four copies each of a map of the roofs. These scaled drawings were plotted on an AUTOCAD® System and complete the documentation of the findings of the survey.

This report documents the locations and extent of wet insulation at the time of the inspection. No information regarding the integrity of the roofing system or building is provided or implied in this report. Many factors, including sunlight, precipitation, wind, foot traffic, and building movement and the like can affect a roof over a short period of time. Regular inspections ensure early detection of problems and can extend the life of a roof membrane.

Bogdan, thank you for using our services. Please call me if you have any questions regarding this report, or if I can help in any way.

Sincerely, JP Phillips

Director of Operations

The roof construction details are documented on the following Core Analysis sheet(s). Each core sample provides information about the roof materials at that particular site in the field of the roof. The age of the roof, and the amount of traffic on the roof may affect the thickness of the insulation, and there may be changes in construction from one section of the roof to another.

Occasionally, a roof that appears to be homogeneous may actually contain two or more types of insulation or membrane. Therefore, any core sample is only a true picture of the roof construction at the site where it was taken.

APPENDIX A: ROOF CONSTRUCTION

Core A - Barnes Building: Main roof: (Wet) Smooth surface EPDM membrane 1.25" Fiberboard 1.5" Polyisocyanurate foam Felt Concrete - Unknown thickness Inside and Outside Air Films (.92 + .25)

Approximate Total R-Value of Known Materials:

Note: Actual R-Values may be lower due to the presence of moisture.

Approximate R-Values 0.02 3.38 9.00

Nominal N/A 1.17

13.57

Core B - Barnes Building: Main roof: (Dry) Smooth surface EPDM membrane .75" Fiberboard 2.5" Polyisocyanurate foam Felt Concrete - Unknown thickness Inside and Outside Air Films (.92 + .25)

Approximate Total R-Value of Known Materials:

Approximate R-Values 0.02 2.03

15.00 Nominal

N/A 1.17

18.22

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 50 00

TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 CONSTRUCTION SITE PLAN

PART 2 PRODUCTS

2.1 TEMPORARY SIGNAGE

2.2 TEMPORARY CONCRETE BARRICADES, SAFETY FENCE, AND CHAIN-LINK FENCE

2.2.1 Temporary Concrete Barricades

2.2.2 Temporary Safety Fencing

2.2.3 Temporary Chain-Link Fence

PART 3 EXECUTION

3.1 EMPLOYEE PARKING

3.2 AVAILABILITY AND USE OF UTILITY SERVICES

3.2.1 Temporary Electrical Equipment and Connections

3.3 SANITATION FACILITIES

3.4 TELECOMMUNICATIONS (VOICE/DATA)

3.5 FIRE PROTECTION

3.6 TRAFFIC PROVISIONS

3.7 TEMPORARY SAFETY FENCING

3.8 CONTRACTOR'S TEMPORARY FACILITIES

3.8.1 Safety

3.8.2 Administrative Field Offices

3.8.3 Storage Area and Temporary Chain Link Fencing

3.8.4 Maintenance of Storage Area

3.8.5 Security Provisions

3.8.6 Storage of Hazardous Materials

3.8.7 Access Roadway(s) to/from Storage Area

3.8.8 Usage of Fuels and Lubricants

3.8.9 Temporary Electrical System

3.8.9.1 Temporary Wiring

3.8.9.2 Construction Equipment

3.8.9.3 Circuit Protection

3.8.10 Weather Protection of Stored Equipment and Materials

3.8.10.1 Building and Site Storm Protection

3.8.11 Stormwater Pollution Prevention

3.8.12 Dust Control

3.9 GOVERNMENT FIELD OFFICE

3.10 PLANT COMMUNICATION

3.11 CLEANUP

3.11.1 Dumpster

3.11.2 Burning

3.12 RESTORATION OF STORAGE AREA

SECTION 01 50 00 Page 1

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SECTION 01 50 00 Page 2

SECTION 01 50 00

TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

PART 1 GENERAL

1.1 SUMMARY

Requirements of this Section apply to, and are a component of, each section of the specifications.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 241 (2009) Standard for Safeguarding Construction, Alteration, and Demolition Operations

NFPA 70 (2011; Errata 2 2012) National Electrical Code

NFPA 70E (2012) Standard for Electrical Safety in the Workplace

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2008; Errata 1-2010; Changes 1-3 2010;

Changes 4-6 2011; Change 7 2012) Safety and Health Requirements Manual

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submitted the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Construction Site Plan; G, RO

Temporary Electrical System; G, A

SD-03 Product Data

Barricades

Safety Fence

Chain-Link Fence

SECTION 01 50 00 Page 3

1.4 CONSTRUCTION SITE PLAN

Prior to the start of work, submit a site plan showing the locations and dimensions of temporary facilities including layouts and details, equipment and material storage areas both onsite and offsite, access and haul routes, avenues of ingress/egress to fenced areas (e.g., the assigned storage area), details of the fence installation, and the number of trailers to be used. Identify any areas which may have to be graveled to prevent the tracking of mud. Indicate if the use of a supplemental or other staging area is desired. Show locations of safety and construction fences, site trailers, construction entrances, trash dumpsters, temporary sanitary facilities, and worker parking areas. The plan shall also show where temporary utility hook-ups are to be located, if required, and how grounding of equipment and trailers will be achieved.

PART 2 PRODUCTS

2.1 TEMPORARY SIGNAGE

Project identification and safety signs are not required for this project.

2.2 TEMPORARY CONCRETE BARRICADES, SAFETY FENCE, AND CHAIN-LINK FENCE

The Contractor shall erect and maintain temporary concrete barricades and/or temporary safety fencing to limit public access to hazardous areas.

The Contractor shall also erect a temporary six foot high chain-link fence around storage areas and trailers. Temporary barricades, safety fencing, and chain-link fencing need not be new, but shall be in overall good condition.

2.2.1 Temporary Concrete Barricades

Concrete barricades shall be required whenever safe public access to paved areas such as roads, parking areas or sidewalks is prevented by construction activities or as otherwise necessary to ensure the safety of both pedestrian and vehicular traffic. Concrete barricades shall be securely placed and clearly visible. All barricades shall be provided with a flashing light (amber yellow, 5 candelas effective intensity, 55-75 flashes per minute). All barricades must be anchored or of sufficient mass to retain an established position where they are placed. Continuous burning lights shall have an effective intensity of 10 candelas. Place barricades at 10 foot maximum intervals and use dual markers and lights at corners and ends. Flashing lights shall be maintained to operate nightly during construction with adequate illumination to provide sufficient visual warning of the hazard during both day and night. The Contractor shall check each flashing light for operation every night before leaving the project area.

2.2.2 Temporary Safety Fencing

Temporary safety fencing shall be used to limit access to active construction areas. The safety fencing shall be a high visibility orange colored, high density polyethylene grid or approved equal, a minimum of 42 inches high, supported and tightly secured to steel posts located on maximum 10 foot centers.

SECTION 01 50 00 Page 4

2.2.3 Temporary Chain-Link Fence

Galvanized chain-link fence shall have a minimum height of six feet. The fence posts shall be driven when installed in earth surfaces; concrete or metal bases placed on the ground surface shall be used when installation is in paved areas.

PART 3 EXECUTION

3.1 EMPLOYEE PARKING

Contractor employees shall park privately owned vehicles in the triangular shaped lot on the south side of the Barnes BuildingLot 4 as indicated in the labelled aerial photograph attached at the end of this section, part of which will be made available solely for the Contractor's use during the prosecution period of this contract, or in an alternate area obtained by the Contractor. Lot 4 is fenced and is locked from 6 pm to 5 am.

Contractor employee parking shall not interfere with other existing and established parking areas or requirements of the installation.

3.2 AVAILABILITY AND USE OF UTILITY SERVICES

The Government will furnish water and electricity from existing points of supply associated with the exterior of the Barnes Building. The Contractor shall make his own investigations as to the suitability of these supplies for use on this project. Water and electricity required in the prosecution of the work in excess of that available from existing points of supply shall be furnished by the Contractor at his own expense. The Contractor shall conserve Government furnished water and electricity.

3.2.1 Temporary Electrical Equipment and Connections

The Contractor, at his own expense and in a workmanlike manner satisfactory to the Contracting Officer, shall install and maintain all necessary temporary connections and distribution lines. All required temporary electrical equipment and lines shall be furnished, installed, connected, and maintained by the Contractor according to EM 385-1-1, Section 11.E, NFPA 241, and NFPA 70, Article 305-6(b), "Assured Equipment Grounding Conductor Program". All temporary equipment and lines shall be removed prior to final acceptance of the work. Materials and equipment need not be new, but must be in good repair and serviceable condition. Periodic inspections of systems and devices will be made by the Contractor at intervals not to exceed one week.

3.3 SANITATION FACILITIES

In accordance with Section 2 of EM 385-1-1, provide, maintain, and make available to all workers provisions for sanitation. Maintain these provisions at all times without nuisance. Upon completion of the work, all sanitary provisions and facilities shall be removed from the premises by the Contractor, leaving the premises clean and free from nuisance.

In accordance with Section 2, Subpart 02.C of EM 385-1-1, provide, maintain, and make available to all workers an adequate supply of potable water for both drinking and personal cleansing. During hot weather, provide cool drinking water.

In accordance with Section 2, Subpart 02.E of EM 385-1-1, provide, maintain, and make available to all workers adequate minimum field-type

SECTION 01 50 00 Page 5 portable toilets. Portable toilets shall be properly secluded from public observation in such a manner as required or approved by the Contracting Officer. Periodically empty wastes into a municipal, district, or station sanitary sewage system, or remove waste to a commercial facility. Include provisions for pest control and elimination of odors. Any penalties and/or fines associated with improper discharge of wastewater shall be the responsibility of the Contractor. Government toilet facilities in the Barnes Building will not be available to Contractor personnel.

3.4 TELECOMMUNICATIONS (VOICE/DATA)

Make arrangements, provide, and maintain telecommunication (voice and data) services desired.

3.5 FIRE PROTECTION

Provide temporary fire protection equipment for the protection of personnel and property during construction. Remove debris and flammable materials daily to minimize potential hazards.

3.6 TRAFFIC PROVISIONS

During construction the Contractor shall provide access as necessary to maintain traffic. The Contractor shall maintain and protect traffic on all affected roads during the construction period except as otherwise specifically directed by the Contracting Officer. Measures for the protection and diversion of traffic, including the provision of watchmen and flagmen, erection of barricades, placing of lights around and in front of equipment and the work, and the erection and maintenance of adequate warning, danger, and direction signs, shall be as required by the State and local authorities having jurisdiction. The traveling public shall be protected from damage to person and property. The Contractor's traffic on roads selected for hauling material to and from the site shall interfere as little as possible with public traffic. The Contractor shall investigate the adequacy of existing roads and the allowable load limit on these roads. The Contractor shall be responsible for the repair of any damage to roads caused by construction operations.

3.7 TEMPORARY SAFETY FENCING

The temporary safety fencing shall be installed as soon as practicable, but not later than 15 days after the date established for commencement of work.

The Contractor shall furnish and erect temporary project safety fencing at the work site to limit access to active construction areas and at other areas as needed to control access by unauthorized people or vehicles. The safety fencing shall be maintained by the Contractor during the life of the contract, adjusted and moved as appropriate to the progress of the work and, upon completion and acceptance of the work, shall become the property of the Contractor and shall be removed from the work site. This requirement is in addition to the optional chain link fence around storage areas and trailers.

3.8 CONTRACTOR'S TEMPORARY FACILITIES

3.8.1 Safety

Protect the integrity of any installed safety systems or personnel safety devices. If entrance into systems serving safety devices is required, the Contractor shall obtain prior approval from the Contracting Officer. If it

SECTION 01 50 00 Page 6 is temporarily necessary to remove or disable personnel safety devices in order to accomplish contract requirements, provide alternative means of protection prior to removing or disabling any permanently installed safety devices or equipment and obtain approval from the Contracting Officer.

3.8.2 Administrative Field Offices

The Contractor shall provide and maintain administrative field office facilities, if desired, in the triangular shaped lot on the east side of the Barnes BuildingLot 4 as indicated in the labelled aerial photograph attached at the end of this section, and as directed by the Contracting Officer. Lot 4 is fenced and is locked from 6 pm to 5 am. Field Office/Trailers utilized by the Contractor for administrative or material storage purposes must present a clean and neat exterior appearance and be in a state of good repair. Trailers which, in the opinion of the Contracting Officer, require exterior painting or maintenance will not be allowed on Government property.

3.8.3 Storage Area and Temporary Chain Link Fencing

The storage area for use by the Contractor, for work and storage of equipment, and materials, and trailers during the life of this contract shall be located in the triangular shaped lot on the south side of the Barnes Building, as shown on the contract drawingsLot 1 as indicated in the labelled aerial photograph attached at the end of this section.

Approximately 2,500 square feet (SF) of Lot 1 will be made available exclusively for the Contractor's use. The Contracting Officer will determine the location of this 2,500 SF within Lot 1 at the Preconstruction Conference. Lot 4 may also be used for this purpose if desired. Lot 4 is fenced and is locked from 6 pm to 5 am. Final location and size of the specific areas available to the Contractor within this lot will be made in consultation with the Contracting Officer during the Preconstruction Conference. The Contractor shall confine its storage areas to the limits as designated or approved by the Contracting Officer and shall be responsible for the security of the areas. Upon completion of the contract, and at no additional cost to the Government, remove all equipment and materials, except as otherwise specified, and restore the sites to their original condition as approved by the Contracting Officer.

Trailers, equipment, or materials must not be open to public view with the exception of those items which are in support of ongoing work on any given day. Do not stockpile materials outside the storage area in preparation for the next day's work. Park mobile equipment, such as tractors, wheeled lifting equipment, cranes, trucks, and like equipment within the storage area at the end of each work day.

At the designated storage areas, the Contractor shall erect temporary chain-link fencing. Except for equipment and materials which are in support of ongoing work on any given day or unless such equipment or materials are assigned a separate and distinct storage area by the Contracting Officer away from the vicinity of the construction site but within the project site boundaries, equipment and materials shall be stored and placed inside the temporary chain-link fencing.

3.8.4 Maintenance of Storage Area

Temporary chain-link fence shall be kept in a state of good repair and proper alignment. Should the Contractor elect to traverse, with construction equipment or other vehicles, grassed or unpaved areas which

SECTION 01 50 00 Page 7 are not established roadways, such areas shall be covered with a layer of gravel as necessary to prevent rutting and the tracking of mud onto paved or established roadways; gravel gradation shall be at the Contractor's discretion. Grass located within the boundaries of the construction site shall be mowed for the duration of the project. Grass and vegetation along fences, buildings, under trailers, and in areas not accessible to mowers shall be edged or trimmed neatly.

3.8.5 Security Provisions

Adequate outside security lighting shall be provided by the Contractor at the Contractor's temporary facilities. The Contractor shall be responsible for the security of its own equipment.

3.8.6 Storage of Hazardous Materials

Hazardous materials shall be stored using a secondary containment system at least 50 feet from any drainage inlets, waterbodies (rivers, streams, lakes), environmentally sensitive areas (wetlands, vernal pools).

3.8.7 Access Roadway(s) to/from Storage Area

Access to and from the storage areas shall be along paved or established roadways. Mud tracked onto paved or established roadways shall be removed immediately.

3.8.8 Usage of Fuels and Lubricants

Refer to Section 01 57 20 ENVIRONMENTAL PROTECTION, Subpart "Chemical Materials Management and Waste Disposal", Subparagraph "Fuel and Lubricants".

3.8.9 Temporary Electrical System

a. Provide a temporary electrical distribution system for temporary power and lighting, to include equipment and connections, in accordance with EM 385-1-1, NFPA 70, and NFPA 70E. The Contractor, or his delegated subcontractor, shall enforce all the safety requirements of electrical extensions for the work of all subcontractors. All work shall be accomplished by skilled electrical tradesmen in a workmanlike manner, as approved by the Contracting Officer.

b. Temporary lighting circuits shall be separate from electrical tool circuits. Receptacle circuits shall be dedicated to either temporary lighting or electric tools and shall be labeled "LIGHTS ONLY" or "TOOLS ONLY," as acceptable.

c. A sketch of the proposed temporary electrical system shall be submitted and accepted by the Contracting Officer before temporary power and lighting is installed.