Attachment 34 - Envr. Report - Narrative.pdf

PROJECT NUMBER 657-21-701JB

PROJECT NAME JBVAMC EHRM Infrastructure Upgrade Project SUBMITTAL 100% Construction Documents

SUBJECT Environmental Design Narrative

Project Overview and Background

Riverfront Safety & Health, LC (Riverfront), a Service-Disabled Veteran Owned Small Business, is currently performing a limited asbestos & lead identification field survey in support of 100% Construction Documents for the EHRM Infrastructure Upgrades project (VA Project 657-21-701JB) proposed at Jefferson Barracks VA Medical Center (JBVAMC), St. Louis, MO (The Project). The current limited asbestos and lead survey is being performed using project scope of work documents and provided drawings as a basis for proposed work and areas.

Currently, RSH understands the scope of work may impact the following related systems and materials as project needs will vary at each of the 20 buildings:

The following rooms/buildings are within the scope of this project:

Building 1 C102D, 1E15, 2C10, E303, 3C14,1W01, W315, GC11/GC12 Building 2 G03, 111, 209, 308 Building 3 B025, 117, 128, 224 Building 3T 118 Building 18 11, 119, 213, 312 Building 23 G09, 121 Building 24 G02A, 114B, 205A Building 25 115, 116, 117A, 204B, 205, 312, 313A Building 51 BE111, 1A102, 1A183, 1A139/1A137A Building 51T 109 Building 52 GN29, 1N82, 1S33, 2N91, 2S53 Building 53 GGS10, Pipe Chase Z005, 1S02, 1S11, 2S001 Building 53T 109 Building 55 1A129, 1B104, 1C132, 2A136, 2C144, 3A120, 3C149 Building 56 BA105, 1A109, 2A122, 3A122 Building 57 1B120, 1B139 Building 58 104, 149 Building 60 102, 101A Building 60T 108 Building 75 1B105

Asbestos and lead drawings from 2018-2019 Campus Survey performed by RSH are being used as a base line for inspection of The Project. The limited project specific asbestos and lead survey is being performed by Charles Davis, Blaine Gravagna and Aaron Campbell. All workers are accredited under the Asbestos Hazard Emergency Response Act (AHERA) and the U.S. Environmental Protection Agency Model Accreditation Program for Asbestos Building Inspectors and Mr. Davis is an Environmental Protection Agency (EPA) trained Lead Risk Assessor. All work is being performed under the direct supervision of a Certified Industrial Hygienist (CIH), Mr. Justin R. Rhyneer to ensure standard EPA-NESHAP/AHERA/OSHA field inspection and sampling methods are employed for representative project inspection. Principal contacts for this project are Kyle Florian of the VA Medical Center and Richard McPhee from Spees DB.

Access to known work areas was provided during regular hospital hours.

Based on the age of the facility and potential methodology of contract work, anticipated suspect materials included caulks, duct seam sealants, black tar, asbestos fire doors, asbestos pipe insulation, asbestos floor tiles, asbestos black tile mastic, structural caulks, various adhesives, various forms of thermal system insulation, exterior surfacing materials, transite panels, etc. and potential Lead Based Paint (LBP) on structural concrete, plaster walls, plaster ceilings, doors/door frames, glaze and ceramic blocks and original structural steel components.

The following generalized analysis is provided for your review and future design considerations related to potential asbestos, lead, and mold issues associated with The Project.

Mold impacted building materials is most likely a highly localized condition for The Project, if any.

The known project work locations are not generally the types of locations where this issue presents, and a history of moisture sources such as roof or pipe system leaks are not known at this time. Nevertheless, areas will be visually inspected for suspected visible mold growth conditions on building materials located within or near the projected pathways of work, with confirmatory sampling to be performed on an as needed basis.

As a general course of action, reuse of existing wall penetrations and pathways for cabling are recommended. Areas within chases and exterior wall voids are normally suspect for asbestos containing materials. Where plaster ceilings are present, it is generally assumed, asbestos pipe insulation and/or mudded fittings associated with domestic water, chilled water, or perimeter heat systems will be present above plaster ceilings.

This project has potential for widely dispersed locations of material impact as the grounding system, possible inter and intrabuilding fibers line installations, and wall installation of Cat6A data ports will travel significant distances. It is important to develop or define pathways of associated works to allow for a targeted material inspection. The precise extent of demolition is currently under development as related to fiber cables, Cat 6A, and pull/patch. Methods or design initiatives to minimize disturbance of paints on walls should be considered.

Asbestos flooring materials and associated flooring mastics/adhesives may be present within TR Rooms scheduled to receive new vertical penetrations (if any). The presence of these materials requires assessment for potential abatement and is necessary for penetration of all flooring systems.

Asbestos pipe insulation and associated asbestos mudded fittings may be present in the corridors where cabling may be routed. The condition of these materials, where present above ceiling grids, has been confirmed through existing VA Six Month Asbestos Condition Assessment Records as being in good/intact condition (see Appendix B), which poses little risk to workers as long as they do not disturb the material in question. Aspects of this design project involving above-ceiling cable routing or similar tasks bring workers into close proximity to asbestos pipe insulation materials have been made with the assumption that asbestos piping is currently in good overall condition unless otherwise noted or observed by others. However, damage to a specific section of pipe insulation can occur at any given time for any number of reasons. As such, observation of damaged pipe insulation that is suspected or known to contain asbestos should be brought to the attention of the VA COR immediately for advisement, as this condition presents risks to workers and/or building occupants and is not considered a scope item. Should damaged pipe insulation conditions be encountered, appropriate remediation response actions may be necessary to allow for the safe removal of ceiling tiles and/or installation of new infrastructure during execution of

The Project. Please see Appendix B for VA provided six-month periodic surveillance documents.

Historic asbestos reports have been furnished for all Buildings impacted by The Project. Where ages of buildings are provided and are of post 1978 construction (EPA ban of lead-based paint use), a more accurate estimate of potential lead issues may be interpreted. Federal and State standards require a limited asbestos inspection survey for all building prior to renovation or demolition without regard to age.

The potential for damaged asbestos TSI and associated fittings may exist above acoustical ceiling grids or plaster ceilings throughout the buildings and may be of issue related to long distance routing of the communication system through corridors and within peripheral office/exam room spaces. Areas above ceilings will require visual inspection for current conditions above ceiling tiles or where plaster ceilings are demolished. Areas within TR rooms will require visually inspection.

Where new building penetrations are necessary for interbuilding fiber lines, asbestos containing stucco and lead based paint is normally present on the exterior of early to mid-century buildings and lead based paint on the interior foundation walls. All exterior stucco is an asbestos containing material and associated caulks will be considered suspect asbestos containing until otherwise confirmed.

Attachments to ceiling, where not otherwise suspended from existing trays or bundles, requires knowledge of lead content of paint where present. Previous lead inspection records indicate a targeted approach, leaving a number of suspect building surfaces in need of further evaluation to accommodate needs of The Project.

The VA provided six-month periodic surveillance forms for Condition Assessments associated with buildings impacted by The Project. These documents serve as the basis for campus-wide conditions of asbestos pipe insulation, floor tile, floor tile mastic, asbestos caulking, and other materials likely to be impacted by The Project. Please see Appendix B for VA provided six-month periodic surveillance documents.

This report summarizes the asbestos and lead-related issues identified for this project. The sampling results have been summarized in Tables 1 and 2 with the laboratory analytical reports.

Scope of Work

Riverfront provided inspection personnel accredited under the Asbestos Hazard Emergency Response Act (AHERA), U.S. Environmental Protection Agency Model Accreditation Program for Asbestos Building Inspectors to perform the following:

- Verify the presence, location, quantity, appearance, and condition of all applicable building materials exhibiting asbestos, lead and mold containing materials within areas of scheduled work at the Jefferson Barracks VA Medical Center in St. Louis, MO identified by the VA as likely to be impacted during future EHRM Infrastructure Upgrade Project. Standard EPA/AHERA/OSHA requirements and field sampling methods were employed to ensure representative sample collection.

Asbestos Containing Materials Inspection Results

Currently, Riverfront personnel collected a total of 909 (1,214 layers) representative samples of suspected asbestos-containing materials related to EHRM Infrastructure Upgrade Project. All samples were transferred via written chain-of-custody, to EMSL, an AIHA & NVLAP accredited laboratory, for analysis.

The suspect materials, which were similar in general appearance and age of construction, were grouped into homogeneous material sets and sampled. A minimum of three samples were collected of all suspect asbestos containing building materials found during the site visit based on conditions noted on December 29, 2021- January 14, 2022, March 11, 2022, and March 14, 2022. Practical precautions were used in collecting samples to ensure safety of all personnel. All samples were safely collected, placed in sealed containers, and transferred with a written chain-of-custody, to EMSL, an AIHA & NVLAP accredited laboratory, for analysis. All samples were analyzed using polarized light microscopy (PLM) analysis with dispersion staining (DS) according to U.S. Environmental Protection Agency (EPA) Method 600 IR-93/116 which is presently recommended by the EPA. Asbestos Containing Materials are defined by EPA as having greater than 1% asbestos as measured by PLM methods. The 2018-2019 RSH Campus survey was used as a baseline for inspection and additional samples were collected in known areas of work within the following buildings:

Building 18:

Nine (9) of the 75 samples collected at Building 18 during this limited survey were detected as asbestos-containing materials (ACM). The nine (9) samples represent three (3) material groups and will be affected by the project scope. The material groups are as follows:

• 12” x 12” Floor Tile – Tan with Streaks and Black Mastic bulk sample results were positive, containing 2% Chrysotile asbestos. This material is in good condition. The material is located in Rooms 119, 213 and 312 and will be impacted by the project. Total amount impacted will be 244 square feet.

• Gray Interior Window Caulk bulk sample results were positive, containing 3% Chrysotile asbestos.

This material is in good condition. The window caulk is located on interior windows within the second and third floor hallways and will be impacted by the project. A total of four windows will be removed totaling 76 linear feet of asbestos caulk.

• Ceiling Tile Adhesive - Black (Hockey Puck) bulk sample results were positive, containing 3%, 4%, and 3% Chrysotile asbestos respectively. This material is in good condition. Ceiling tile adhesive is located in Room 011 on remnant plaster ceiling that has been previously demolished.

Approximately 2 asbestos adhesive rounds will be abated.

During this inspection, eight (8) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are thought to be impacted by the project and are present in chases, wet walls and above ceiling grid. Significantly damaged and damaged pipe insulation was noted in various rooms above the ceiling grid and should be remediated as necessary to facilitate a safe working environment.

o Damaged Pipe Insulation Locations

Room 217B Room 217D Room 217E Room 217 Room 216 Room 206 Room 101 Room 202 o Significantly Damaged Pipe Insulation Locations Room 215 Room 207B Room 210A Room 210B Room 005

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are shown on project drawings. Floor tile and/or underlying mastics are present within various rooms and should not be impacted by the project unless otherwise noted.

• Interior Door Caulk- Gray containing greater than 1% asbestos is present within the building and is not thought to be impacted by the project. It is located at various door locations on each floor, typically leading to the exterior or to a specific hallway.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Steam Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and should not be disturbed by the project.

• Exterior Surfacing (Stucco) containing greater than 1% Chrysotile is present on the exterior face of the building behind a new EFIS layer. Current project drawings do not show this material being disturbed however it may become disturbed if new condenser lines will penetrate the exterior of the building.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Exterior window components should not be impacted by the project.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available.

• Debris within Crawlspace Soil containing greater than 1% Chrysotile is present within the crawlspace and is not shown on project drawings. Asbestos containing debris within the crawlspace should not be impacted by the project.

Building 24:

Zero (0) of the 39 samples collected at Building 24 during this limited survey were detected as asbestos-containing materials (ACM).

During this inspection, ten (10) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are not thought to be impacted by the project unless noted on project drawings. Pipe insulation is present in chases, wet walls and above ceiling grid.

o Room 114C contains 24 linear feet of asbestos pipe insulation that shall be remediated to facilitate a safe work environment. All removal shall be conducted using glove bag techniques within a negative pressure enclosure.

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings. Floor tile and/or underlying mastics are present within various rooms and should not be impacted by the project unless otherwise noted.

• Asbestos Containing Wall Panels containing greater than 1% Chrysotile are present within the building and are not shown on project drawings. Wall panels are located on the second floor near the work area and should not be impacted by the project. If new ports are to be installed use an adhesive backed system. Do not disturb the asbestos containing panels.

• Duct Gaskets- White containing greater than 1% Chrysotile are present within the building and are not shown on project drawings. Asbestos containing duct gaskets are located on the ground floor and are not thought to be impacted by the project.

• Sink Soundproofing- Black containing greater than 1% Chrysotile is present within the building and is not shown on project drawings. Sink soundproofing is located on the first floor and should not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Steam Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and should not be disturbed by the project.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

• Exterior Surfacing (Stucco) containing greater than 1% Chrysotile is present on the exterior face of the building behind a new EFIS layer. Current project drawings do not show this material being disturbed however it may become disturbed if new condenser lines will penetrate the exterior of the building.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review

Building 3:

Zero (0) of the 54 samples collected at Building 3 during this limited survey were detected as asbestos-containing materials (ACM).

During this inspection, nine (9) material groups of asbestos containing materials based on the 2018 materials are not thought to be impacted by the project and are present in chases and wet walls.

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings. Floor tile and/or underlying mastics are present within various rooms and will be impacted by the project.

o Room 117 contains 9”x 9” floor tile and black mastic beneath non asbestos 12”x 12” floor tile, associated mastic and a wood sub floor. Current project plans include demolishing the floor to bare substrate, directly impacted the asbestos containing material. Total asbestos containing flooring impacted is approximately 360 square feet total.

o Room 224 contains two (2) layers of 9”x 9” floor tile and black mastic, each separated by a wood sub floor, beneath non asbestos brick red floor sheeting associated mastic and a wood sub floor. Current project plans include demolishing the floor to bare substrate, directly impacted the asbestos containing material. Total asbestos containing flooring impacted is approximately 420 square feet total.

• Interior Window Caulk- Gray containing greater than 1% Chrysotile is present within the building and are not shown on project drawings. Interior window caulk is located on the first level east addition windows and should not be impacted by the project.

• Interior Surfacing Material (Stucco) containing greater than 1% Chrysotile is present within the building and are not shown on project drawings. Asbestos containing surfacing material on walls are located on the basement, first and second floors at the eastern addition threshold and should not be impacted by the project.

• Exterior Surfacing (Stucco) containing greater than 1% Chrysotile is present on the exterior face of the building behind a new EFIS layer. Current project drawings do not show this material being disturbed however it may become disturbed if new condenser lines will penetrate the exterior of the building.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and should not be disturbed by the project.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

• Debris within Crawlspace Soil containing greater than 1% Chrysotile is present within the crawlspace and is not shown on project drawings. Asbestos containing debris within the crawlspace should not be impacted by the project.

Building 2:

Six (6) of the 54 samples collected at Building 2 during this limited survey were detected as asbestos-containing materials (ACM). The six (6) samples represent two (2) material groups and will be affected by the project scope. The material groups are as follows:

• 12” x 12” Floor Tile – Tan Under Carpet bulk sample results were positive, containing 2% Chrysotile asbestos. This material is in good condition. The material is located in Room 111 and will be impacted by the project. Total amount impacted and removed within a negative pressure enclosure will be 260 square feet.

• Sink Soundproofing- White bulk sample results were positive, containing 3% and 4% Chrysotile asbestos. This material is in good condition. The sink soundproofing is located on sinks within Room 209 and will be impacted by the project. A total of two sink units will be removed using intact methods within a negative pressure enclosure.

During this inspection, eleven (11) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are not thought to be impacted by the project and are present in chases and wet walls.

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will be impacted by the project.

• Duct Seam Sealant- White containing greater than 1% Chrysotile is present within the building and is not shown on project drawings in areas that it will not become impacted. It is assumed on all ducts unless verified in the field.

• Penetration Caulk- Brown containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing penetration caulk brown is located at the ceiling and drywall wall penetration points. Penetration Caulk-Brown will be impacted by the project.

o Room G03 and G04 will require the removal of drywall walls where the brown caulk along the ceiling and wall seam is present. The total amount impacted for both areas is approximately 30 linear feet. Removal shall be conducted within a negative pressure enclosure.

• Exterior Door Caulk- Gray containing greater than 1% Chrysotile is present on the exterior of the building and is not show on project drawings. Asbestos containing door caulk should not be impacted by the project.

• Exterior Louver Sill Sealant- Black containing greater than 1% Chrysotile is present on the exterior of the building and is not show on project drawings. Asbestos containing louvre caulk should not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and should not be disturbed by the project.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

• Exterior Surfacing (Stucco) containing greater than 1% Chrysotile is present on the exterior face of the building behind a new EFIS layer. Current project drawings do not show this material being disturbed however it may become disturbed if new condenser lines will penetrate the exterior of the building.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 25:

Nine (9) of the 87 samples collected at Building 25 during this limited survey were detected as asbestos-containing materials (ACM). The nine (9) samples represent three (3) material groups and will be affected by the project scope. The material groups are as follows:

• Floor Paper Backing Under Floor Tile- Yellow bulk sample results were positive, containing 2% Chrysotile asbestos. This material is considered a friable material and is in good condition. The material is located in Room 113A and will be impacted by the project and should be removed within a negative pressure enclosure. Total amount impacted will be 40 square feet.

• Floor Tile Adhesive- White bulk sample results were positive, containing 2% Chrysotile asbestos.

This material and is in good condition. The material is located in Room 113A and will be impacted by the project and should be removed within a negative pressure enclosure. Total amount impacted will be 40 square feet.

• Floor Tile Mastic- Black bulk sample results were positive, containing 5%, 6% and 2% Chrysotile asbestos. This material is in good condition. The material is located in Room 113A and 308 under carpet and will be impacted by the project and should be removed within a negative pressure enclosure. Total amount impacted will be 40 and 35 square feet within 113A and 308 respectively.

During this inspection, eleven (11) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are not thought to be impacted by the project and are present in chases and wet walls.

Damaged pipe insulation was noted in various rooms above the ceiling grid and should be remediated as necessary to facilitate a safe working environment.

o Damaged Pipe Insulation Locations Room 101

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will be impacted by the project.

• Fiberglass Pipe Insulation Sealant- White containing greater than 1% Chrysotile is present within the building and is not shown on project drawings in areas that it will not become impacted. It is assumed on all fiberglass pipe insulation. Fiberglass pipe insulation being impacted will need to be removed within a negative pressure enclosure using approved glove bag techniques. Fiberglass pipe sealant will be impacted in the following rooms:

o Room 114 contains 25 of fiberglass pipe insulation with white sealant that will need to be abated to facilitate the heat convector unit removal on the floor above.

• Vibration Joint Cloth- White containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing vibration joint cloth is located on the second floor as well as in the attic and should not be impacted by the project.

• Debris within Crawlspace Soil containing greater than 1% Chrysotile is present within the crawlspace and is not show on project drawings. Asbestos containing debris within the crawlspace should not be impacted by the project.

• Adhesive on Ceiling Plaster- Black containing greater than 1% Chrysotile is present on the on the plaster ceiling on the third floor and is not shown on project drawings. Asbestos containing adhesive on plaster ceilings should not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and will be disturbed by the project.

o Room 208 contains a steam convector unit that current project plans intend to demolish.

A total of 12 square feet cementitious panel will need to be remediated within a negative pressure enclosure.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

• Exterior Surfacing (Stucco) containing greater than 1% Chrysotile is present on the exterior face of the building behind a new EFIS layer. Current project drawings do not show this material being disturbed however it may become disturbed if new condenser lines will penetrate the exterior of the building.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 23:

Six (6) of the 61 samples collected at Building 23 during this limited survey were detected as asbestos-containing materials (ACM). The six (6) samples represent two (2) material groups and will be affected by the project scope. The material groups are as follows:

• Pipe Insulation- Black bulk sample results were positive, containing 56%, 57% and 60% Chrysotile asbestos. This material is considered a friable material and is in damaged condition. The material is located in Room G09A and will be impacted by the project and should be removed within a negative pressure enclosure. Total pipe insulation (white and black) amount impacted, for G09 and G09A, will be 170 linear feet.

• Tar Coating on Pipe Insulation- Black bulk sample results were positive, containing 8%, 9% and 6% Chrysotile asbestos. This material and is in good condition. The material is located in Room G09A and will be impacted by the project and should be removed within a negative pressure enclosure. Total pipe insulation (white and black) amount impacted, for G09 and G09A, will be 170 linear feet.

During this inspection, seven (7) material groups of asbestos containing materials based on the 2018

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are not thought to be impacted by the project and are present in chases and wet walls.

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and will be disturbed by the project.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

o Room G09 contains one window assembly that will need removed within a negative pressure enclosure.

• Exterior Surfacing (Stucco) containing greater than 1% Chrysotile is present on the exterior face of the building behind a new EFIS layer. Current project drawings do not show this material being disturbed however it may become disturbed if new condenser lines will penetrate the exterior of the building

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 55:

Zero (0) of the 56 samples collected at Building 55 during this limited survey were detected as asbestos-containing materials (ACM).

During this inspection, zero (0) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

Building 53:

Zero (0) of the 93 samples collected at Building 53 during this limited survey were detected as asbestos-containing materials (ACM).

During this inspection, nine (9) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will be impacted by the project.

o Room GS10 contains 100 square feet of asbestos containing black mastic under 12”x12” light blue floor tile that will be impacted by the project. The tile and mastic will need removed using manual methods within a negative pressure containment.

o Room 2S201 and 2S202 contain 200 square feet of asbestos containing black mastic under 12”x12” floor tile that will be impacted by the project. The tile and mastic will need removed using manual methods within a negative pressure containment.

• Fibrous Brown HVAC Covering containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing fibrous brown HVAC covering is located in the basement and should not be impacted by the project.

• Penetration Caulk- Black containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing black penetration caulk is located in the basement and should not be impacted by the project.

• Exterior Door Caulk- White containing greater than 1% Chrysotile is present on the exterior door systems and is not show on project drawings. Asbestos containing door caulk is located on the exterior of the building and should not be impacted by the project.

• Debris within Crawlspace Soil containing greater than 1% Chrysotile is present within the crawlspace and is not show on project drawings. Asbestos containing debris within the crawlspace will be impacted by the project.

o Room GN51 will be constructed within the crawlspace from the basement hallway. Due to construction of the new room an estimated 60 cubic feet will need to be excavated and an air- tight EPDM layer placed on the soil to create a safe working space for construction.

See drawing and specifications for more detail.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and are not thought to be disturbed by the project.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 52:

Three (3) of the 100 samples collected at Building 52 during this limited survey were detected as asbestos-containing materials (ACM). The three (3) samples represent one (1) material group and will be affected by the project scope. The material group is as follows:

• Floor Tile Mastic- Black under Asbestos 12”x12” Floor Tile- White/Beige bulk sample results were positive, containing 6%, 7% and 4% Chrysotile asbestos. This material is in good condition.

The material is located in GN29 and will be impacted by the project. One hundred and twenty

(120) square feet will need removed within a negative pressure enclosure.

During this inspection, fourteen (14) material groups of asbestos containing materials based on the 2018 materials are thought to be impacted by the project and are present in chases, wet walls and above ceiling grid. Damaged pipe insulation was noted in various rooms above the ceiling grid and should be remediated as necessary to facilitate a safe working environment.

o Damaged Pipe Insulation Locations Room GS09B Room 2S34 Room 2S14

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will be impacted by the project.

• Structural Caulk Between Glaze Block and Plaster- White containing greater than 1% Chrysotile is present within the building and is not shown on project drawings in areas that it will not become impacted. Structural caulk being impacted will need to be removed within a negative pressure enclosure using manual methods.

o Room GN29 contains six linear feet of structural caulk that will need to be abated to facilitate for a new door to be installed. Removal shall be conducted using manual methods within a negative pressure containment.

• Waterproofing Tar- Black containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing waterproofing is located within the crawlspace and ground floor and should not be impacted by the project.

• Debris within Crawlspace Soil containing greater than 1% Chrysotile is present within the crawlspace and is not show on project drawings. Asbestos containing debris within the crawlspace should not be impacted by the project.

• Residual Insulation on Ductwork containing greater than 1% Chrysotile is present on the ductwork on the ground floor and is not show on project drawings. Asbestos containing insulation on ductwork should not be impacted by the project.

• Caulk on Ductwork- Black containing greater than 1% Chrysotile is present on the ductwork on the ground floor, Room GN39 and is not show on project drawings. Asbestos containing insulation on ductwork should not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and will should not be disturbed by the project.

• Asbestos Window Caulk and Glazing containing greater than 1% Chrysotile is assumed present on all windows and is not show on project drawings. Asbestos containing window caulks and glazing should not be impacted by the project.

• Transite Lab Countertops containing greater than 1% Chrysotile is present within select labs and is not show on project drawings. Asbestos containing countertops should not be impacted by the project.

• Transite Wall Panels containing greater than 1% Chrysotile is present within select rooms and is not show on project drawings. Asbestos wall panels should not be impacted by the project. No penetrations should occur on asbestos containing wall panels. Use surface mounted conduit with an adhesive backing if necessary.

• Transite Flu Pipe containing greater than 1% Chrysotile is present within first floor north hallway and is not shown on project drawings. Asbestos containing flu pipe should not be impacted by the project.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 60:

Three (3) of the 33 samples collected at Building 60 during this limited survey were detected as asbestos-containing materials (ACM). The three (3) samples represent one (1) material group and will be affected by the project scope. The material group is as follows:

• Floor Tile Mastic- Black under Asbestos 12”x12” Floor Tile- White/Beige bulk sample results were positive, containing 8%, 9% and 4% Chrysotile asbestos. This material is in good condition.

The material is located in Room 101A and should not be impacted by the project.

During this inspection, thirteen (13) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are thought to not to be impacted by the project and are present in chases, wet walls and above ceiling grid. Significantly damaged pipe insulation was noted in various rooms above the ceiling grid and should be remediated as necessary to facilitate a safe working environment.

o Significantly Damaged Pipe Insulation Locations Hallway H101 Room 112 Room 113 Room 126

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will not be impacted by the project.

• Black Wrap on Freon Pipes containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing freon pipe is located within various rooms within the first floor and should not be impacted by the project.

• Penetration Caulk- Black containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing penetration caulk is located storage room 115 and should not be impacted by the project.

• Debris within Crawlspace Soil containing greater than 1% Chrysotile is present within the crawlspace and is not shown on project drawings. Asbestos containing debris within the crawlspace should not be impacted by the project.

• Old Covering Under White Canvas on Hot Water Tank containing greater than 1% Chrysotile is present within the mechanical room and is not show on project drawings. Asbestos containing covering should not be impacted by the project.

• Sewer Pipe Penetration Packing containing greater than 1% Chrysotile is present within the crawlspace and is not show on project drawings. Asbestos containing packing on sewer pipes should not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and will should not be disturbed by the project.

• Asbestos Window Caulk and Glazing containing greater than 1% Chrysotile is assumed present on all windows and is not show on project drawings. Asbestos containing window caulks and glazing should not be impacted by the project.

• Loose Fill at Hanger Locations on Fiberglass Chilled Water Lines containing greater than 1% Chrysotile is present within the crawlspace and is not show on project drawings. Asbestos containing hangers on chilled water fiberglass pipes should not be impacted by the project.

• Remnant Pipe Insulation on Steam Pipes to Steam Convectors containing greater than 1% Chrysotile is present within the crawlspace and is not show on project drawings. Asbestos containing pipe insulation on steam lines should not be impacted by the project.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 51:

Three (3) of the 51 samples collected at Building 51 during this limited survey were detected as asbestos-containing materials (ACM). The three (3) samples represent one (1) material group and will be affected by the project scope. The material group is as follows:

• Floor Tile Mastic- Black under Asbestos 12”x12” Floor Tile- White/Beige bulk sample results were positive, containing 8%, 9% and 6% Chrysotile asbestos. This material is in good condition.

Black mastic under 12”x12” floor tile is located in Room 1A183, 1A102 and 1A123 and will be impacted by the project. A total of 570 square feet will need removed within a negative pressure enclosure using manual methods.

During this inspection, thirteen (13) material groups of asbestos containing materials based on the 2018 Riverfront Safety and Health Campus Asbestos Drawing are known to be present within the building.

• Asbestos Pipe Insulation with associated Asbestos Mudded Fittings are present within the building and are known ACM materials based on review of previous sample results. These materials are thought to be impacted by the project and are present in chases, wet walls and above ceiling grid.

• Various Floor Tiles and/or Underlying Mastic containing greater than 1% Chrysotile are present within the building and are not shown on project drawings other than in rooms it will be impacted.

Floor tile and/or underlying mastics are present within various rooms and will not be impacted by the project other than where noted.

• Penetration Caulk- Black containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos containing penetration caulk is located throughout the building and should not be impacted by the project.

• Fire Doors (PACM) are presumed to contain asbestos and are thought to be located throughout the building at stairwells and should not be impacted by the project.

• Cementitious Panels within Convector Units (PACM) are presumed to contain asbestos behind heat convectors within wall pockets. The heat convectors are present within perimeter walls and will should not be disturbed by the project.

• Concealed Asbestos Window Caulk is suspected to be located behind new window components.

Window components should not be impacted by the project.

• Window Glazing- Black containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos black window glazing is located throughout the building and should not be impacted by the project.

• Door Window Caulk- White containing greater than 1% Chrysotile is present within the building and is not show on project drawings. Asbestos white door window caulk is located throughout the building and should not be impacted by the project.

• Historic Roofing System (PACM) is presumed to contain asbestos. Presence of historic roof system or associated remnants and sealants underlying the existing membrane is unknown.

Where project penetrations are required, the roof will be considered to have an asbestos containing material unless otherwise inspected or prior inspection results are available for review.

Building 1:

Nine (9) of the 128 samples collected at Building 1 during this limited survey were detected as asbestos-containing materials (ACM). The nine (9) samples represent three (3) material groups and two (2) will be affected by the project scope.