Bid RFI Response Letter R1 - 03.14.2023.pdf

4901 Crowe Drive Mount Crawford, VA 22841

Phone (540) 434-6365 www.valleyesp.com

Date March 14th, 2023

Reference: VA Project Number 613-16-302

Chilled Water Line Replacement Bldg 500

Bid RFI Responses

Question 1: 02/22/2023 L.R. Costanzo Co. Inc

1) During the Pre-Bid walk through, it was noticed that the existing ceiling tiles needing removed in the loading dock area appear to be extremely old. This may cause issues with re-installation.

Should bid include providing new ceiling tiles?

2) If new ceiling tiles are required, can the Martinsburg DVA provide specifications for these existing tiles?

Response: 03/06/2023 Valley Engineering

The design intent is to reuse the existing ceiling system, and not replace. Do not include replacement in bid.

Question 2: 02/27/2023 Broadway Electric

Lighting – the electrical construction statement of bid items says suspended light fixtures are being replaced – see notes on M4.02, M4.03, M6.01, M6.02, M6.03, M6.04 o

What is the spec of the lighting fixture?

What is the quantity?

Response: 03/06/2023 Valley Engineering

The intent of the plans is to remove the existing light fixtures as needed to perform the indicated work, and then reinstall the existing fixtures in their original position. The existing fixtures will be reused. Field verify the quantity of fixtures to be removed and reinstalled in place.

http://www.valleyesp.com/

VA Project Number 613-16-302

Chilled Water Line Replacement Bldg 500

Bid RFI Responses

Question 3: 02/28/2023 Borlie Mechanical Contracting, LLC

Can the VA confirm that none of the material to be demoed or relocated contains asbestos?

Response: 03/06/2023, Valley Engineering

Asbestos material is expected in ductwork and pipe insulation throughout the facility. Refer to

Specification section 028213.13-1.1B for estimated quantities. Asbestos-containing material surveys for the basement and first-floor interstitial spaces and a hazardous waste report for the building are included with this response letter.

Question 4: 02/28/2023 Borlie Mechanical Contracting, LLC

Isolation valves are to be installed in the existing system at the loading dock and in the interstitial. Will the VA be responsible to isolate, drain and fill their existing system for the contractor to perform the required work?

Response: 03/06/2023 Valley Engineering

It is the contractor’s responsibility to isolate, drain and fill the existing system to perform the required work. Hospital isolation valves are in room GE-105 (M1.01e). Utilize branch isolation valves in the basement interstitial and tunnels to limit the extent of drainage required.

Contractor to coordinate shutdowns with the VA as indicated in the Pipe Changeover Notes on M0.01 and as directed elsewhere on the plans and in project specifications.

Question 5: 02/28/2023 Borlie Mechanical Contracting, LLC

Is there a Heat trace specification?

Response: 03/6/2023 Valley Engineering

Electrical Heat tracing systems are specified in section 232113 Paragraph 2.8

Question 6: 2/28/2023 Borlie Mechanical Contracting, LLC

M2.03C Note 6 and M2.03H Note 3 say to relocate Vacuum, Oxygen, and Medical Air piping prior to installing the Chilled water. Will recertification of these systems be required?

Response: 03/6/2023 Valley Engineering

Yes, recertification of the vacuum, oxygen, and medical air systems will be required.

Question 7: 02/28/2023 Borlie Mechanical Contracting, LLC

Several of the drawings reference Phase 1 & 2. Does this project have phasing?

Response: 03/6/2023 Valley Engineering

Demolition of the existing chilled water piping in the tunnels is phased to limit equipment downtime and allow new piping to be installed in place of existing. Refer to M2.01 T series, M3.01t, M4.01, and M4.02 for more information on phasing.

Question 8: 03/02/2023 Borlie Mechanical Contracting, LLC

Drawing M2.03g, note 7 mentions the relocation of pneumatic carrier tubes. Can you provide contact information for company used by the VA or will this work be contracted separately by the VA?

Response: 03/13/2023 Valley Engineering

This work will not be contracted separately. The vendor contact is Dean Herbstreit with Swisslog.

dean.herbstreit@swisslog-healthcare.com

Question 9: 03/01/2023 MCW Group

What are the proposal delivery format options (email, hand delivery, etc)?

Response: 03/13/2023 Valley Engineering

Per discussion with the CO, bids may be hand delivered or mailed – emailed bids are not acceptable.

mailto:dean.herbstreit@swisslog-healthcare.com

Bid RFI Responses

Question 10: 03/01/2023 MCW Group

How many copies of the proposal does the government require?

Response: 03/13/2023 Valley Engineering

Per discussion with the CO, one copy is required, per block 13(a)

Question 11: 03/01/2023 MCW Group

Will a public bid opening occur after the proposal deadline?

Response: 03/13/2023 Valley Engineering

Per discussion with the CO, A public bid opening will occur at the date and time of receipt of bids.

Question 12: 03/01/2023 MCW Group

During the site visit, the ceiling tiles referenced on page M1.01e note #3 are indicated to be removed, saved, and reinstalled. Given the visual condition of the existing ceiling, it appears tampering with it to create access will create more damage. Is there a gross area of ceiling that can be identified to be replaced?

Response: 03/13/2023 Valley Engineering

Refer to the response to Question 1 above.

Question 13: 03/01/2023 MCW Group

Can a spec for the existing ceiling tile and ceiling grid be made available or an acceptable equivalent?

Response: xx/xx/2023 Valley Engineering

Refer to the response to Question 1 above.

Question 14: 03/01/2023 MCW Group

On page M1.01e note # 1 seems to point to insulated piping, not a laundry/trash chute. Please advise on Notes #1 & #2.

Response: 03/10/2023 Valley Engineering

Demolition note #1 on M1.01e is correctly identifying distribution ducts that are part of an obsolete laundry and trash delivery systems, and are correctly noted for removal. Field verify exact location of distribution ducts in the field.

Question 15: 03/01/2023 MCW Group

There are small mentions of wall construction i.e. page M2.02a note #3. Can a wall type be provided to show what comprises the wall construction?

Response: 03/13/2023 Valley Engineering

The wall noted on M2.02a is a non-load bearing, non-rated wall intended to enclose the new pipe risers installed in the 1B-114E Storage. Construction is 4” metal stud wall with one layer of drywall on the external side of the enclosure.

Question 16: 03/01/2023 MCW Group

The specs make mention of flooring, plaster repair, and painting. Can a quantity be provided as an assumed amount for pricing purposes? The drawings are not explicit as to what extent new is to be provided.

Response: 03/13/2023 Valley Engineering

Flooring repair is expected in locations where new pipe risers extend through the 1st floor into the basement interstitial, notably 1B-114E and 1A-187. For pricing purposes, assume 100 square feet.

Plaster Repair, and wall repair in general, is expected in locations where new pipes penetrate existing construction, and where demolished pipes leave an opening. For pricing purposes, assume 150 square feet of wall repair.

Painting scope for pipe identification, metal supports, etc are well defined in the drawings and specifications. For additional painting work related to new walls and wall repair, assume 500 square feet for pricing purposes.

Bid RFI Responses

Question 17: 03/01/2023 MCW Group

Can the specification for the existing floor tile and vinyl base be provided?

Response: 03/13/2023 Valley Engineering

The specific specification of existing floor tile is not available. Coordinate replacement tile selection with COR.

Question 18: 03/01/2023 MCW Group

Can a specification for the existing paint be provided?

Response: 03/13/2023 Valley Engineering

The specific specification of existing paint is not available. Coordinate color selection with COR. Refer to Section 099100 for other requirements.

Question 19: 03/01/2023 MCW Group

On page M3.01 there is mention of an area of excavation. Given this is supposed to be in the base bid and provided as a deduct option, can elevations be provided, and existing condition drawings be provided of that area? Detailed information/drawings will help us understand the area to be excavated more fully. Please advise.

Response: 03/13/2023 Valley Engineering

Select additional drawings are included with this response letter.

Question 20: 03/01/2023 MCW Group

Can a general allowance be made for the excavation work?

Response: 03/13/2023 Valley Engineering

A general allowance is not available for this work. Price the work and include unit values for removal of various materials per cubic yard for payment deduction should excavation work not exceed the priced work.

Question 21: 03/02/2023 American Vet Industries, LLC

It is my assumption general notes on Mechanical drawings stating drywall is part of this project is for repair purposes only and no new drywall work is required outside of this. Is this correct?

Response: 03/13/2023 Valley Engineering

Additional drywall work is required at the pipe enclosure in 1B-114E.

Question 22: 03/02/2023 American Vet Industries, LLC

Sheet M2.01e refers to installing butterfly valves. Please confirm butterfly valves allowed to be used as part of the VAMC Martinsburg’s facility standard?

Response: 03/13//2023 Valley Engineering

Butterfly valves are acceptable for use in hydronic piping systems.

Question 23: 03/02/2023 American Vet Industries, LLC

Is Microsoft project professional an acceptable scheduling program approved by the VA?

Response: 03/13/2023 Valley Engineering

Per Specification Section 013216.13 – 2.1A, The computer produced schedule shall be prepared and maintained using Primavera P6 software. Microsoft project professional is not an acceptable substitute.

Question 24: 03/02/2023 American Vet Industries, LLC

Please confirm that the qualified Superintendent can double as the SSHO.

Response: 03/13/2023 Valley Engineering

No, the SSHO must be a separate qualified individual from the Prime Contractor’s superintendent and/or quality control manager. Refer to Specification Section 013526-1.7C

Bid RFI Responses

Question 25: 03/02/2023 American Vet Industries, LLC

Will a hazard analysis survey be provided for project area?

Response: 03/13/2023 Valley Engineering

Asbestos-containing material surveys for the basement interstitial, first-floor interstitial and loading dock area, and a hazardous waste report for the building are included with this response letter.

Question 26: 03/02/2023 American Vet Industries, LLC

Should the contractor anticipate running into ACM during the scope of work being performed?

Response: 03/13/2023 Valley Engineering

Yes, ACM is expected in ductwork insulation and seam sealant and piping insulation throughout the facility. Notable locations include the basement and first-floor interstitial spaces, the tunnel areas, and the loading dock. Asbestos-containing material surveys for the basement and first-floor interstitial spaces and a hazardous waste report for the building are included with this response letter. Asbestos-containing material surveys for the basement interstitial, first-floor interstitial and loading dock area, and a hazardous waste report for the building are included with this response letter.

Refer to Section 028213.13 for estimated quantities.

Question 27: 03/02/2023 American Vet Industries, LLC

Has the soils in this area been evaluated or area known to contain contaminants at the temporary access area?

Response: 03/13/2023 Valley Engineering

No evaluation is on file for soils in this area. Area is not known to contain contaminants.

Question 28: 03/02/2023 Borlie Mechanical Contracting, LLC

Drawings M2.01e and M1.01e call out the removal and reinstallation of the ceiling panels. Sprinkler and electrical box are in same space new work is shown to be installed. Should sprinkler and electrical relocation in this space be added to documents for relocation? (Picture #1)

Response: 13/13/2023 Valley Engineering

Work in this area can be shifted plan-west as needed to avoid conflict with the electrical box, sprinklers, and other overhead obstructions, even to the point of being installed above the corridor vestibule at Column-Line 15. Note, the COR preferers that work not completely block the vestibule entrance, if possible. Coordinate final location with COR and depict in coordination drawings.

Question 29: 03/02/2023 Borlie Mechanical Contracting, LLC

Drawing M2.01ta. The area where the 16” CWS and CWR enter the Tunnel is very congested with conduit, pull stations, boxes, etc. Are all the items potentially in the way, to be removed? (Pictures #2

& #3)

Response: 13/13/2023 Valley Engineering

The intent is to relocate the 12x12 junction box and associated conduits (Construction note 6), and domestic water lines and other electrical conduit as needed (General Note 5).

Question 30: 03/02/2023 Borlie Mechanical Contracting, LLC

There are several places that appear to possibly contain asbestos. Have the areas that will be impacted by this project been tested for asbestos? (Pictures #4 & #5)

Response: 13/13/2023 Valley Engineering

Yes, ACM is expected in ductwork insulation and seam sealant and piping insulation throughout the facility. Notable locations include the basement and first floor interstitial spaces, the tunnel areas, and the loading dock. Refer to Section 028213.13 for estimated quantities. Asbestos-containing material surveys for the basement interstitial, first-floor interstitial and loading dock area, and a hazardous waste report for the building are included with this response letter.

Bid RFI Responses

Question 31: 03/10/2023 District Veterans Contracting Inc

a. Re hazmat remediation: Hazmat work does not appear on the drawings, and the

Specification provide quantities of hazmat for the base bid only. However, Bid Item 3, Deduct Alt 2 is described as “The unused, existing chilled water piping in the Building

500 basement interstitial space and load dock areas will not be removed, thus deducting the cost of demolition and much of the asbestos remediation.” We are unable to quantify the amount of asbestos remediation work that’s necessary from this Deduct Alternate 2.

i. Is there a Hazmat Report available for affected areas on this project? Could it be provided to all bidders?

ii. If there is no Hazmat Report available, can the VA quantify the amount of hazardous material involved in Deduct Alternate 2?

Response: 03/13/2023 Valley Engineering

Asbestos-containing material surveys for the basement interstitial, first-floor interstitial and loading dock area, and a hazardous waste report for the building are included with this response letter.

Estimated quantities of hazardous materials for Deduct Alternate 2 are as follows.

1,100 ft of 2-6 inch diameter pipe insulation

510 ft of >6 inch diameter pipe insulation

135 fittings, saddle blocks, valves, t’s or other mechanical appurtenances 2-6 inches in diameter

70 fittings, saddle blocks, valves, t’s or other mechanical appurtenances >6 inches in diameter

90 linear feet of <2.0 square-feet ductwork insulation.

Sincerely, Valley Engineering

Brent W. Kuhn, PE

Senior Mechanical Engineer

PICTURE #1

(QUESTION #28)

PICTURE #2

(QUESTION #29)

PICTURE #3

(QUESTION #29)

PICTURE #4

(QUESTION #30)

PICTURE #5

(QUESTION #30)

ASBESTOS-CONTAINING MATERIALS SURVEY

BUILDING 500 Basement Interstitial

Martinsburg VA Medical Center

510 Butler Avenue Martinsburg, West Virginia 25405

Ms. Krista Bowen, Industrial Hygienist

BEC Project # WV15032

Fieldwork Conducted: February 9, 2016 & December 15, 2016

Final Technical Report Date: February 9, 2017

Prepared by:

ENVIRONMENTAL SCIENCE, ENGINEERING & INDUSTRIAL HYGIENE SERVICES

BUILDING 500 Basement Interstitial

TABLE OF CONTENTS

SECTION I SITE DESCRIPTION 1.0

SECTION II ASBESTOS-CONTAINING MATERIALS SURVEY 1.0

SECTION III CONCLUSIONS & RECOMMENDATIONS 5.0

APPENDICES

APPENDIX A EMSL SAMPLE RESULTS & EMSL CHAIN OF CUSTODY

APPENDIX B SAMPLING LOG

APPENDIX C BEC STAFF QUALIFICATIONS

BOGGS ENVIRONMENTAL CONSULTANTS, INC.

Onsite Fieldwork Conducted By & Final Technical Report Reviewed By:

Derrick A. Klein Environmental Specialist State of West Virginia US EPA AHERA Asbestos Inspector (#AI008308) State of West Virginia US EPA AHERA Asbestos Inspector (#AI008781)

SECTION 1.0 SITE DESCRIPTION

Project Site: Building 500 Basement Interstitial

Requester Name: Ms. Krista Bowen, Industrial Hygienist

Requester Address: Department of Veteran Affairs

Subject Site Description & Scope of Work:

The subject site is Building 500 Basement Interstitial located on the campus at Martinsburg VA Medical Center at 510 Butler Avenue, Martinsburg West Virginia 25405, hereinafter referred to as the subject site.

BEC received authorization from Ms. Krista Bowen, Martinsburg VA Medical Center, Industrial Hygienist, to provide support services to update the existing asbestos-containing materials database developed by previous inspectors. Ms. Bowen requested the asbestos inspection to ensure compliance with United States Environmental Protection Agency’s (US EPA) and State of West Virginia regulations, prior to disturbance of building construction materials anticipated (scheduled) to occur during renovation activities and to update the inventory of asbestos-containing materials.

SECTION 2.0 ASBESTOS-CONTAINING MATERIAL SURVEY

BOGGS ENVIRONMENTAL CONSULTANTS, INC. (BEC) conducted an asbestos-containing building construction materials (ACBMs) re-inspection survey of the interior and exterior of the subject site to evaluate materials that were previously not sampled, collection and further evaluation of non-friable organically bound materials via Transmission Electron Microscopy (TEM), and updates of the existing locations and quantities of building construction materials. The asbestos inspection was conducted in accordance with the US EPA "Asbestos Hazard Emergency Response Act (AHERA) of 1986" (40 CFR Part 763) and the "Asbestos School Hazard Abatement Reauthorization Act (ASHARA) of 1992" (40 CFR Part 763, Appendix C-E, Model Accreditation Plan).

BEC staff members Mr. Derrick Klein, US EPA AHERA and State of West Virginia licensed asbestos inspector, conducted a preliminary field walk inspection for the purpose of developing an understanding of the previously sampled components and to identify any previously unidentified suspected asbestos-containing materials.

Subsequently, Mr. Klein collected multiple bulk samples of suspect ACBMs observed at the subject site on, February 9, 2016 & December 15, 2016.

FIELD SAMPLING

BEC advises, based upon current US EPA asbestos hazard control regulations, the minimum number of samples necessary to definitively determine the presence (or absence) of ACBMs is dependent on the nature and quantity of the suspect building construction material. Additionally, the US EPA has established a standardized schedule for bulk sample collection of suspect ACBMs based upon homogeneous areas.

BEC advises, based upon onsite visual inspection and bulk sampling activities, thirteen (13) samples of the suspect ACBMs were collected and submitted to the analytical laboratory which upon laboratory analysis revealed a total of thirteen (13) individual PLM/DS analyses were required due to multiple layered bulk samples. BEC advises, based upon US EPA asbestos analytical regulations, the laboratory analyst has the sole discretion/responsibility in determining whether the bulk sample is composed of one or multiple layers.

LABORATORY ANALYSIS

Pursuant to the field screen and bulk sample collection, BEC submitted the bulk samples to EMSL of Cinnaminson, New Jersey for asbestos content analysis. EMSL is accredited by the American Industrial Hygiene Association and the National Institute of Standards and Technology (NIST)-National Voluntary Laboratory Accreditation Program as proficient in the analysis of asbestos in bulk samples.

EMSL performed Polarized Light Microscopy with Dispersion Staining (PLM/DS) of the bulk samples in accordance with the “Method for the Determination of Asbestos in Bulk Building Materials” (US EPA. Method 600/R-93/116, July 1993).

BEC advises PLM/DS analysis revealed asbestos WAS DETECTED in the suspect ACBM bulk samples collected and submitted to EMSL. BEC provides the results of the PLM/DS analyses in Table A – Asbestos-Containing Material Testing Results:

TABLE A- ASBESTOS-CONTAINING MATERIAL TESTING RESULTS

HA# Sample # Material

Class.

Sampling Location

Building Construction Material

Asbestos (%)

1 BIS-2916-1 M

Supply Duct Between F12+E12 - F14+E14

White Duct Insulation Seam Sealant

2% Chrysotile

2 BIS-2916-2 M

Between F14+E14 -

F12+E12 Yellow Duct Tape Mastic None Detected

3 BIS-2916-3 M

Between F14+E14 -

F12+E12 Brown Metal Duct Seam

Sealant 2% Chrysotile

4 BIS-2916-4 M

Between F14+E14 -

F12+E12 Off-White Pipe Mastic None Detected

5 BIS-2916-5 M

Between F14+E14 -

F12+E12 White Joint Compound None Detected

6 BIS-2916-6 M

On Wall at F14 to

E14 Drywall None Detected

7 BIS-2916-7 M

Between F12 and

E12 Red Fire Stop None Detected

8 BIS-2916-8 S Wall at F14 Spray Applied Fire

Proofing None Detected

9 BIS-2916-9 M

Between G14 and

F14 Tan/Yellow Metal Duct

Seam Sealant None Detected

1 BIS-2916-10 M

Between G14 and

F14 White Duct Insulation

Seam Sealant None Detected

2 BIS-2916-11 M

Between G14 and

F14 Yellow Duct Tape Mastic None Detected

4 BIS-2916-12 M

Between G14 and

F14 Off-White Pipe Mastic None Detected

10 BIS-2916-13 M Between C2 and C3 Yellow Pin Mastic None Detected

See APPENDIX B – SAMPLING LOG for the comprehensive sampling log sheet complete with historical sampling data.

LABORATORY ANALYSIS (continued)

Upon receipt of PLM/DS laboratory data, EMSL was directed by Krista Bowen to conduct further analysis via “Gravimetric Reduction and Transmission Electron Microscopy” (ELAP 198.4) on eight (8) non-friable organically-bound (NOB) suspect materials reported as none-detected by PLM.

The request for TEM analysis is based upon the understanding that small asbestos fibers may be missed by PLM due to resolution limitations of the optical microscope. In addition, binding materials in certain building products can cause matrix interference, which may obscure underlying asbestos fibers from view and result in a false-negative analytical result. Therefore, PLM is not consistently reliable in detecting asbestos in NOB materials.

Quantitative transmission electron microscopy (TEM) is currently the only method that can definitively pronounce NOB materials as non-asbestos containing.

BEC advises TEM analysis revealed asbestos WAS DETECTED in the suspect NOB bulk samples submitted to EMSL. BEC provides the results of the NOB TEM analyses hereunder in Table B - Asbestos Survey NOB TEM Analytical Results.

TABLE B – ASBESTOS SURVEY - NOB TEM ANALYTICAL RESULTS

Class.

Sampling Location

Building Construction Material

Asbestos (%)

2 BIS-2916-2 M

Between F14+E14 -

F12+E12 Yellow Duct Tape Mastic None Detected

4 BIS-2916-4 M

Between F14+E14 -

F12+E12 Off-White Pipe Mastic None Detected

7 BIS-2916-7 M

Between F12 and

E12 Red Fire Stop None Detected

9 BIS-2916-9 M

Between G14 and

F14 Tan/Yellow Metal Duct

Seam Sealant None Detected

1 BIS-2916-10 M

Between G14 and

F14 White Duct Insulation Seam

Sealant None Detected

2 BIS-2916-11 M

Between G14 and

F14 Yellow Duct Tape Mastic None Detected

4 BIS-2916-12 M

Between G14 and

F14 Off-White Pipe Mastic 4.8% Chrysotile

10 BIS-2916-13 M Between C2 and C3 Yellow Pin Mastic None Detected

ASBESTOS SURVEY LIMITATIONS

The above limited inspection was characterized by close visual inspection of Building 500 Basement Interstitial, in accordance with US EPA regulations and generally accepted engineering work practices associated with the conduct of an asbestos survey. It is relevant to note, BEC did NOT conduct exploratory demolition to gain access to enclosed building conditions (e.g., wall cavities, pipe chases, HVAC ductwork shafts, ceiling plenums, etc.).

Additionally, BEC sampling strategy was designed to include materials not previously sampled and non-organically bound materials which were not evaluated via TEM. As such, BEC assumes no responsibility that the historical information provided is accurate or complete.

BEC collected random bulk samples of suspect ACBMs. BEC has made every effort to identify all locations and types of asbestos-containing construction materials. BEC asbestos survey sampling strategy included samples of the materials chosen at random. However, BEC advises, due to the inconsistencies of manufacturer processes and contractor installation methods, materials of similar construction may contain varied quantities of asbestos.

ASBESTOS SURVEY LIMITATIONS (continued)

Furthermore, BEC advises locating all asbestos-containing materials can only be definitively achieved by conducting exploratory demolition and sampling every section of pipe insulation, every fitting or valve covering, every square yard of fireproofing, and every square foot of other surface coating materials. Therefore, BEC makes no warranty, expressed or implied, that all asbestos has been found. Additionally, BEC recommends bulk sampling and analysis of all suspect ACBMs (not otherwise evaluated during this survey) encountered within a building area, prior to renovation or demolition.

SECTION 3.0 CONCLUSIONS AND RECOMMENDATIONS

CONCLUSIONS

1. BEC concludes, based upon onsite visual inspection, review of analytical data, and review of historical analytical data. US EPA-regulated ACBMs (defined as >1% asbestos content) were identified at the subject site and are listed in Table C – Asbestos-Containing Materials.

TABLE C: ASBESTOS-CONTAINING MATERIALS

Building Construction

Location

EPA

Regulated

OSHA

Regulated Estimated Quantity

White Duct Mastic Throughout Basement Interstitial YES YES TBD

Brown Metal Duct Seam Sealant

Throughout Basement Interstitial YES YES TBD

Off-White Pipe Mastic Throughout Basement Interstitial YES YES TBD

Yellow/Green/Brown Seam Sealant

Throughout Basement Interstitial YES YES TBD

*BEC advises that due to accessibility and extensive renovation history of the interstitial space that quantifying all locations of asbestos containing materials was not feasible.

2. BEC concludes, based upon review of US EPA and State of West Virginia law, specific regulations governing the disturbance, removal, and disposal of asbestos, DO APPLY to any work, of which is planned and/or can be reasonably anticipated to, result in the disturbance of the materials identified in the course of this inspection.

3. BEC concludes, based upon review of United States Occupational, Safety and Health Administration (Construction Industry-29 CFR 1926.1101 and General Industry-29 CFR 1910.1001) regulations governing non-occupational and occupational exposure to asbestos, DO APPLY to any renovation/demolition, housekeeping, maintenance and repair activities directly and/or indirectly impacting (disturbance/damage) the asbestos containing materials.

RECOMMENDATIONS

1. BEC recommends should the renovation activities result in the discovery of additional suspect ACBMs, halting all work activities with subsequent bulk sample collection and analysis of discovered ACBMs, to determine asbestos content.

2. BEC recommends, due to extensive renovation history and reinstallation of similar materials in both size/shape/color, that prior to any new renovation activities that collection of bulk sample of suspect ACBM’s to determine asbestos content.

APPENDIX A

EMSL SAMPLE RESULTS

EMSL CHAIN OF CUSTODY

EMSL Analytical, Inc.

200 Route 130 North Cinnaminson, NJ 08077

Phone/Fax: (800) 220-3675 / (856) 786-5974 http://www.EMSL.com / cinnasblab@EMSL.com

VAMD78

041603238

613-C60024

Asbestos Survey

EMSL Order ID:

Customer ID:

Customer PO:

Project ID:

Attn:

Proj: Basement Interstitial (Asbestos Survey)

Phone: (304) 263-3412

Fax: (304) 262-4881

Collected: 2/ 9/2016

Received: 2/11/2016

Analyzed: 2/24/2016

Krista Bowen

VA Medical Center

510 Butler Avenue

Martinsburg, WV 25405-9991

Summary Test Report for Asbestos Analysis of Bulk Material via EPA 600/R-93/116 Method via

Polarized Light Microscopy Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0001BIS-2916-1

500 Basement Interstitial b/w F12-E12- F14-E14/White Duct Insulation Seam Sealant

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 98% 2% ChrysotilePLM White

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0002BIS-2916-2

500 Basement Interstitial b/w F14-E14 F12-E12/Yellow Duct Tape Mastic

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 100%PLM Yellow None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedYellow

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0003BIS-2916-3

500 Basement Interstitial b/w F14-E14 F12-E12/Brown Metal Duct Seam Sealant

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 98% 2% ChrysotilePLM Brown

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0004BIS-2916-4

500 Basement Interstitial b/w F14-E14 F12-E12/Off-White Pipe Mastic

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 100%PLM White None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedWhite

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0005BIS-2916-5

500 Basement Interstitial b/w F14-E14 F12-E12/White Joint Compound

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 100%PLM White None Detected

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0006BIS-2916-6

500 Basement Interstitial on Wall @ F14 to E14/Drywall

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 20% 80%PLM White None Detected

Test Report:EPAMultiTests-7.32.2.D Printed: 2/24/2016 11:22PM Page 1 of 3

Phone/Fax: (800) 220-3675 / (856) 786-5974 http://www.EMSL.com / cinnasblab@EMSL.com

VAMD78

041603238

613-C60024

Asbestos Survey

EMSL Order ID:

Customer ID:

Customer PO:

Project ID:

Summary Test Report for Asbestos Analysis of Bulk Material via EPA 600/R-93/116 Method via

Polarized Light Microscopy Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0007BIS-2916-7

500 Basement Interstitial b/w F12- E12/Red Fire Stop

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 100%PLM Red None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedRed

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0008BIS-2916-8

500 Basement Interstitial Wall @ F14/Spray Applied Fireproofing

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 60% 40%PLM Gray None Detected

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0009BIS-2916-9

500 Basement Interstitial b/w G14 & F14/Tan/ Yellow Metal Duct Seam Sealant

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 100%PLM Tan/Yellow None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedTan/Yellow

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0010BIS-2916-10

500 Basement Interstitial b/w G14 & F14/White Duct Insulation Seam Sealant

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/18/2016 7% 93%PLM White None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedWhite

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0011BIS-2916-11

500 Basement Interstitial b/w C14 & F14/Yellow Duct Tape Mastic

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/18/2016 0% 100%PLM Yellow None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedYellow

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0012BIS-2916-12

500 Basement Interstitial b/w C14 & F14/Off-White Pipe Mastic

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/18/2016 7% 93%PLM White None Detected

2/24/2016 0.0% 95.2% ChrysotileTEM Grav. Reduction White 4.8%

Client Sample ID:

Sample Description:

Lab Sample ID: 041603238-0013BIS-2916-13

500 Basement Interstitial b/w C2 & C3/Yellow Pin Mastic

DateTEST Non-Fibrous Asbestos CommentColor Fibrous

Non-AsbestosAnalyzed

2/17/2016 0% 100%PLM Yellow None Detected

2/24/2016 0.0% 100%TEM Grav. Reduction None DetectedYellow

Test Report:EPAMultiTests-7.32.2.D Printed: 2/24/2016 11:22PM Page 2 of 3

OrderID: 041603238

OrderID: 041603238

Phone/Fax: (800) 220-3675 / (856) 786-5974 http://www.EMSL.com / cinnasblab@EMSL.com

VAMD78

041603238

613-C60024

Asbestos Survey

EMSL Order ID:

Customer ID:

Customer PO:

Project ID:

Summary Test Report for Asbestos Analysis of Bulk Material via EPA 600/R-93/116 Method via

Polarized Light Microscopy

Analyst(s):

PLM (10)Keishla Vazquez Caraballo

PLM (3)Patrick Carr

TEM Grav. Reduction (8)Wayne Froehlich

Benjamin Ellis, Laboratory Manager or Other Approved Signatory

Reviewed and approved by:

EMSL maintains liability limited to cost of analysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. This test report must not be used to claim product endorsement by NVLAP or any agency of the U.S.

Government. EMSL bears no responsibility for sample collection activities or analytical method limitations. The laboratory is not responsible for the accuracy of results when requested to physically separate and analyze layered samples. PLM alone is not consistently reliable in detecting asbestos in floor coverings and similar NOBs

Samples analyzed by EMSL Analytical, Inc. Cinnaminson, NJ NVLAP Lab Code 101048-0, AIHA-LAP, LLC-IHLAP Lab 100194, NYS ELAP

10872, NJ DEP 03036

Initial report from: 02/18/201607:59:27

Test Report:EPAMultiTests-7.32.2.D Printed: 2/24/2016 11:22PM Page 3 of 3

APPENDIX B

SAMPLING LOG

Building #:

Date:

HA# Sample # Lab initials/Chain of Custody # Sample location Material Description

General Material Category or substrate Notes

Bldg # Floor Wing Space # Location of Sample Asb. Type Asb. Content

1 BIS‐2916‐1 41603238 500 Basement Interstitial Supply Duct Between F12+E12 ‐ F14+E14

White Duct Insulation Seam Sealant

Duct Insulation Seam Sealant Chrysotile 2% Throughout

2 BIS‐2916‐2 41603238 500 Basement Interstitial Between F14+E14 ‐

F12+E12 Yellow Duct Tape Mastic Duct Tape Mastic NAD NAD (Via TEM) Throughout

3 BIS‐2916‐3 41603238 500 Basement Interstitial Between F14+E14 ‐

F12+E12 Brown Metal Duct Seam

Sealant Metal Duct Seam

Sealant Chrysotile 2%

Under Fiberglass Insulation on Metal

Duct

4 BIS‐2916‐4 41603238 500 Basement Interstitial Between F14+E14 ‐

F12+E12 Off‐White Pipe Mastic Pipe Mastic NAD NAD (Via TEM)

5 BIS‐2916‐5 41603238 500 Basement Interstitial Between F14+E14 ‐

F12+E12 White Joint Compound Joint Compound

(Drywall) NAD NAD On F14 ‐ E14 Wall 6 BIS‐2916‐6 41603238 500 Basement Interstitial On Wall at F14 to E14 Drywall Drywall NAD NAD On F14 ‐ E14 Wall 7 BIS‐2916‐7 41603238 500 Basement Interstitial Between F12 and E12 Red Fire Stop Fire Stop NAD NAD (Via TEM) Spot Locations

8 BIS‐2916‐8 41603238 500 Basement Interstitial Wall at F14 Spray Applied Fire Proofing Spray Applied Fireproofing NAD NAD On All Columns

9 BIS‐2916‐9 41603238 500 Basement Interstitial Between G14 and F14 Tan/Yellow Metal Duct

Seam Sealant Duct Seam Sealant NAD NAD (Via TEM)

1 BIS‐2916‐10 41603238 500 Basement Interstitial Between G14 and F14 White Duct Insulation Seam

Sealant Duct Insulation Seam Sealant NAD NAD (Via TEM)

2 BIS‐2916‐11 41603238 500 Basement Interstitial Between G14 and F14 Yellow Duct Tape Mastic Duct Tape Mastic NAD NAD (Via TEM) 4 BIS‐2916‐12 41603238 500 Basement Interstitial Between G14 and F14 Off‐White Pipe Mastic Pipe Mastic Chrysotile 4.8% Via TEM 10 BIS‐2916‐13 41603238 500 Basement Interstitial Between C2 and C3 Yellow Pin Mastic Pin Mastic NAD NAD (Via TEM) On Supply Cold

11 120711500BICENB001 191112347 500 Basement Interstitial Basement Interstitial Rockwool Duct Insulation Insulation NAD NAD 11 120711500BICENB002 191112347 500 Basement Interstitial Basement Interstitial Rockwool Insulation Insulation NAD NAD

11 120711500BICENB003 191112347 500 Basement Interstitial Basement Interstitial Rockwool Insulation Debrirs Insulation NAD NAD

1 102708SPDCEWB001 101593‐0 500 Basement Interstitial Basement Interstitial White Duct Mastic Duct Mastic Chrysotile 2‐3% 1 102708SPDCEWB002 101593‐0 500 Basement Interstitial Basement Interstitial White Duct Mastic Duct Mastic Chrysotile 2‐3% 1 102708SPDCEWB003 101593‐0 500 Basement Interstitial Basement Interstitial White Duct Mastic Duct Mastic Chrysotile 2‐3% 1 102708SPDCEWB004 101593‐0 500 Basement Interstitial Basement Interstitial White Duct Mastic Duct Mastic Chrysotile 2‐3% 1 102708SPDCEWB005 101593‐0 500 Basement Interstitial Basement Interstitial White Duct Mastic Duct Mastic Chrysotile 2‐3%

2/9/2016 & 12/15/16

Lab Results

Sampling Log Sheet BEC Inspector: Derrick Klein 500 ‐ Basement Interstitial

APPENDIX C

BEC STAFF QUALIFICATIONS

BUILDING 500 1st Floor Interstitial

Fieldwork Conducted: December 15, 2016

BUILDING 500 1st Floor Interstitial

SECTION II ASBESTOS-CONTAINING MATERIALS SURVEY 1.0

SECTION III CONCLUSIONS & RECOMMENDATIONS 3.0

APPENDIX A SAMPLING LOG

APPENDIX B BEC STAFF QUALIFICATIONS

Derrick A. Klein

State of West Virginia US EPA AHERA Asbestos Inspector (#AI008781)

Project Site: Building 500 1st Floor Interstitial

The subject site is Building 500 1st floor Interstitial located on the campus at Martinsburg VA Medical Center at 510 Butler Avenue, Martinsburg West Virginia 25405, hereinafter referred to as the subject site.

BEC received authorization from Ms. Krista Bowen, Martinsburg VA Medical Center, Industrial Hygienist, to provide support services to update the existing asbestos-containing materials database developed by previous inspectors. Ms. Bowen requested the asbestos inspection to ensure compliance with United States Environmental Protection Agency’s (US EPA) and State of West Virginia regulations, prior to disturbance of building construction materials anticipated (scheduled) to occur during renovation activities and to update the inventory of construction materials (ACBMs) re-inspection survey of the interior and exterior of the subject site to evaluate materials that were previously not sampled, collection and further evaluation of non-friable organically bound materials via Transmission Electron Microscopy (TEM), and updates of the existing locations and quantities of building construction materials. The asbestos inspection was conducted in accordance with the US EPA "Asbestos Hazard Emergency Response Act (AHERA) of 1986" (40 CFR Part 763) and the "Asbestos School Hazard

BEC staff member Mr. Derrick Klein, a US EPA AHERA and State of West Virginia licensed asbestos inspector, conducted a preliminary field walk inspection for the purpose of developing an understanding of the previously sampled components and to identify any previously unidentified suspected asbestos-containing materials.

Subsequently, Mr. Klein did not collect any bulk samples of suspect ACBMs observed at the subject site on December 15, 2016.

BEC advises, based upon current US EPA asbestos hazard control regulations, the minimum number of samples necessary to definitively determine the presence (or absence) of ACBMs is dependent on the nature and quantity of the suspect building construction material. Additionally, the US EPA has established a standardized schedule for

The above limited inspection was characterized by close visual inspection of Building 500 1st floor interstitial, in accordance with US EPA regulations and generally accepted engineering work practices associated with the conduct of an asbestos survey. It is relevant to note, BEC did NOT conduct exploratory demolition to gain access to enclosed building conditions (e.g., wall cavities, pipe chases, HVAC ductwork shafts, ceiling plenums, etc.).

Additionally, BEC sampling strategy was designed to include materials not previously sampled and non-organically bound materials which were not evaluated via TEM. As such, BEC assumes no responsibility that the historical information provided is accurate or complete.

BEC collected random bulk samples of suspect ACBMs. BEC has made every effort to identify all locations and types of asbestos-containing construction materials. BEC asbestos survey sampling strategy included multiple samples of the same materials chosen at random. However, BEC advises, due to the inconsistencies of manufacturer processes and contractor installation methods, materials of similar construction may contain varied quantities of asbestos.

Furthermore, BEC advises locating all asbestos-containing materials can only be definitively achieved by conducting exploratory demolition and sampling every section of pipe insulation, every fitting or valve covering, every square yard of fireproofing, and every square foot of other surface coating materials. Therefore, BEC makes no warranty, expressed or implied, that all asbestos has been found. Additionally, BEC recommends bulk sampling and analysis of all suspect ACBMs (not otherwise evaluated during this survey) encountered within a building area, prior to renovation

1. BEC concludes, based upon onsite visual inspection, review of analytical data, and review of historical analytical data. US EPA-regulated ACBMs (defined as >1% asbestos content) were identified at the subject site

Location

EPA

Regulated

OSHA

Regulated Estimated Quantity

White Duct Mastic Throughout 1st Floor Interstitial YES YES TBD*

Brown Metal Duct Seam Sealant

Throughout 1st Floor Interstitial YES YES TBD*

Off-White Pipe Mastic Throughout 1st Floor Interstitial YES YES TBD*

Yellow/Green/Brown Seam Sealant

Throughout 1st Floor Interstitial YES YES TBD*

*BEC advises that due to accessibility and extensive renovation history of the interstitial space that quantifying all locations of asbestos containing materials was not feasible.

2. BEC concludes, based upon review of US EPA and State of West Virginia law, specific regulations governing the disturbance, removal, and disposal of asbestos, DO APPLY to any work, of which is planned and/or can be reasonably anticipated to, result in the disturbance of the materials identified in the course of this inspection.

(Construction Industry-29 CFR 1926.1101 and General Industry-29 CFR 1910.1001) regulations governing non-occupational and occupational exposure to asbestos, DO APPLY to any renovation/demolition, housekeeping, maintenance and repair activities directly and/or indirectly impacting (disturbance/damage) the asbestos containing materials.

1. BEC recommends should the renovation activities result in the discovery of additional suspect ACBMs, halting all work activities with subsequent bulk sample collection and analysis of discovered ACBMs, to determine

2. BEC recommends, due to extensive renovation history and reinstallation of similar materials in both size/shape/color, that prior to any new renovation activities that collection of bulk sample of suspect ACBM’s to determine asbestos content.

Date: 12/15/2016

HA# Sample # Lab initials/Chain of Custody # Sample location Material Description

General Material Category or substrate Notes

Bldg # Floor Wing Space # Location of Sample Asb. Type Asb. Content

1 071508OPICEW B001 101593‐0 500 1st intersititial West of 21 CW Hallway

Supply White Duct Mastic duct insulation mastic

(fiberglass) Chrysotile 3‐ 5%

1 071508OPICEW B002 101593‐0 500 1st intersititial East of #22 CCW Room

1A‐132 White Duct Mastic duct insulation mastic

(fiberglass) Chrysotile 3‐5%

1 071508OPICEW B003 101593‐0 500 1st intersititial Interstitial Space East of #22 CCW Room 1A‐132 White Duct Mastic duct insulation mastic (fiberglass) Chrysotile 1‐2%

1 071508OPICEW B004 101593‐0 500 1st intersititial Interstitial Space CCW #45 Room 1A‐129 White Duct Mastic duct insulation mastic (fiberglass) Chrysotile 3‐5%

1 041009CPC1CEWB001 101593‐0 500 1st intersititial CPC‐1 Vavbox TU8 White Duct Mastic duct insulation mastic

(fiberglass) NAD NAD

1 041009CPC1CEWB002 101593‐0 500 1st intersititial CPC‐1 Vavbox TU9 White Duct Mastic duct insulation mastic

(fiberglass) NAD NAD

1 041009CPC1CEWB003 101593‐0 500 1st intersititial CPC‐1 Vavbox TU13 White Duct Mastic duct insulation mastic

(fiberglass) Chrysostile 2‐4%

1 041009CPC1CEWB004 101593‐0 500 1st intersititial CPC‐1 Hot Water Perimeter Heating

White Duct Mastic on Insulation (Piping) duct insulation mastic (fiberglass) NAD NAD

Lab Results

BEC Inspector: Derrick Klein 500 1st Floor Intersitial

BUILDING 500-GE

Fieldwork Conducted: July 15, 2016

BUILDING 500-GE

SECTION II ASBESTOS-CONTAINING MATERIALS SURVEY 1.0

SECTION III CONCLUSIONS & RECOMMENDATIONS 5.0

APPENDIX A EMSL SAMPLE RESULTS & EMSL CHAIN OF CUSTODY

APPENDIX B SAMPLING LOG

APPENDIX C BEC STAFF QUALIFICATIONS

Colin T. Muir

State of West Virginia US EPA AHERA Asbestos Inspector (#AI008813)

Project Site: Building 500-GE

The subject site is Building 500-GE located on the campus at Martinsburg VA Medical Center at 510 Butler Avenue, Martinsburg West Virginia 25405, hereinafter referred to as the subject site.

BEC received authorization from Ms. Krista Bowen, Martinsburg VA Medical Center, Industrial Hygienist, to provide support services to update the existing asbestos-containing materials database developed by previous inspectors. Ms. Bowen requested the asbestos inspection to ensure compliance with United States Environmental Protection Agency’s (US EPA) and State of West Virginia regulations, prior to disturbance of building construction materials anticipated (scheduled) to occur during renovation activities and to update the inventory of construction materials (ACBMs) re-inspection survey of the interior and exterior of the subject site to evaluate materials that were previously not sampled, collection and further evaluation of non-friable organically bound materials via Transmission Electron Microscopy (TEM), and updates of the existing locations and quantities of building construction materials. The asbestos inspection was conducted in accordance with the US EPA "Asbestos Hazard Emergency Response Act (AHERA) of 1986" (40 CFR Part 763) and the "Asbestos School Hazard

BEC staff member Mr. Colin Muir, a US EPA AHERA and State of West Virginia licensed asbestos inspector, conducted a preliminary field walk inspection for the purpose of developing an understanding of the previously sampled components and to identify any previously unidentified suspected asbestos-containing materials.

Subsequently, Mr. Muir collected multiple bulk samples of suspect ACBMs observed at the subject site on July 15, 2016.

BEC advises, based upon current US EPA asbestos hazard control regulations, the minimum number of samples necessary to definitively determine the presence (or absence) of ACBMs is dependent on the nature and quantity of the suspect building construction material. Additionally, the US EPA has established a standardized schedule for

BEC advises, based upon onsite visual inspection and bulk sampling activities, one (1) samples of the suspect ACBMs were collected and submitted to the analytical laboratory which upon laboratory analysis revealed a total of one (1) individual PLM/DS analyses were required. BEC advises, based upon US EPA asbestos analytical regulations, the laboratory analyst has the sole discretion/responsibility in determining whether the bulk sample is composed of one or multiple layers.

LABORATORY ANALYSIS

Pursuant to the field screen and bulk sample collection, BEC submitted the bulk samples to EMSL of Cinnaminson, New Jersey for asbestos content analysis. EMSL is accredited by the American Industrial Hygiene Association and the National Institute of Standards and Technology (NIST)-National Voluntary Laboratory Accreditation Program as proficient in the analysis of asbestos in bulk samples.

EMSL performed Polarized Light Microscopy with Dispersion Staining (PLM/DS) of the bulk samples in accordance with the “Method for the Determination of Asbestos in Bulk Building Materials” (US EPA. Method 600/R-93/116, July 1993).

BEC advises PLM/DS analysis revealed asbestos WAS NOT DETECTED in a number of the suspect ACBM bulk samples collected and submitted to EMSL. BEC provides the results of the PLM/DS analyses in Table A – Asbestos-Containing Material Testing Results:

TABLE A- ASBESTOS-CONTAINING MATERIAL TESTING RESULTS

Class.

Sampling Location

Building Construction Material

Asbestos (%)

62 500-GE-71516-1 M

GE-105A: Exhaust

Tunnel Wall Black residual wall mastic None Detected

Upon receipt of PLM/DS laboratory data, EMSL was directed by Krista Bowen to conduct further analysis via “Gravimetric Reduction and Transmission Electron Microscopy” (ELAP 198.4) on one (1) non-friable organically-bound (NOB) suspect materials reported as none-detected by PLM.

The request for TEM analysis is based upon the understanding that small asbestos fibers may be missed by PLM due to resolution limitations of the optical microscope. In addition, binding materials in certain building products can cause matrix interference, which may obscure underlying asbestos fibers from view and result in a false-negative analytical result. Therefore, PLM is not consistently reliable in detecting asbestos in NOB materials.

Quantitative transmission electron microscopy (TEM) is currently the only method that can definitively pronounce NOB materials as non-asbestos containing.

BEC advises TEM analysis revealed asbestos WAS DETECTED in any of the suspect NOB bulk samples submitted to EMSL. BEC provides the results of the NOB TEM analyses hereunder in Table B - Asbestos Survey NOB TEM Analytical Results.

TABLE B – ASBESTOS SURVEY - NOB TEM ANALYTICAL RESULTS

Class.

Sampling Location

Building Construction Material

Asbestos (%)

62 500-GE-71516-1 M

GE-105A: Exhaust

Tunnel Wall Black Residual Wall Mastic 0.33% Chrysotile

The above limited inspection was characterized by close visual inspection of Building 500-GE, in accordance with US EPA regulations and generally accepted engineering work practices associated…