Polarized_Light_Microscopy_Dispersion_Staining_Report_Summary.pdf
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- Solicitation number
- 2026-063
- Issued by
- Alachua County, Graceville City, Florida
About this file
This is a Polarized Light Microscopy (PLM) Dispersion Staining report prepared by Arrowhead Technologies for GLE Associates regarding asbestos bulk sample analysis at a facility in Clearwater, Florida (NVLAP Lab Code 200703-0813-679-0720). The report documents the analysis of eighteen bulk material samples submitted on November 21, 2025, and reported on November 25, 2025, for Project GRU Mobile and Transformer 25-15360AT (Job No. 25000-32247). Samples were collected from multiple building components including drywall panels, floor tiles with mastic, wallpaper, gray seals, roof membranes with tar, and ceiling texture, with each material type analyzed in triplicate (designated A, B, and C variants) according to EPA Method 600/R-93/116 and 40 CFR Part 763 Appendix E.
All eighteen bulk material samples tested negative for asbestos content, with none detected exceeding the EPA threshold of one percent asbestos by Calibrated Visual Area Estimation (CVAE). The analysis was conducted by Monte Hall, P.G. (Florida Registration No. 1658), serving as both the Analyst and Laboratory Director. The laboratory notes that floor tile and other resinously bound materials analyzed by EPA methods may yield false negative results due to limitations in separating closely bound fibers, and recommends Transmission Electron Microscopy as an alternative method when definitive results are required. The report explicitly states that results relate only to materials as received and may not be reproduced without written permission from Arrowhead Technologies, LLC, and must be reproduced in full when authorized.
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PLM REPORT SUMMARY
3151 San Bernadino St.
Clearwater, Florida 33759
NVLAP Lab Code 200703-0813-679-0720 / mhall005@tampabay.rr.com
Client : GLE Associates Lab Set No. : 015360
Project : GRU Mobile and Transformer 25-15360AT Job No. :
25000-32247Client Project No.: Report Date : 11/25/2025
Identification : Asbestos, Bulk Sample Analysis Sample Date : 11/21/2025
Test Method : Polarized Light Microscopy / Dispersion Staining (PLM/DS) Page 1 of 3App E to Sub E of 40 CFR Part 763 and EPA Method 600/R-93/116
On 11/25/2025, eighteen (18) bulk material samples were submitted by Michael D Harrel for asbestos analysis by PLM/DS.
Copies of Bulk Sample Analysis sheets are attached; additional information may be found therein. The results are summarized below:
Asbestos ContentSample Description / LocationLab Sample No.
None Detected-Tan DW Paper BackingDrywall Panels DW-01 A015360-001 None Detected-White Drywall Material
None Detected-Tan DW Paper BackingDrywall Panels DW-01 B015360-002 None Detected-White Drywall Material
None Detected-Tan DW Paper BackingDrywall Panels DW-01 C015360-003 None Detected-White Drywall Material
None Detected-Gray Floor Tile12x12 Gray Floor Tile w/ Yellow Mastic FT-01 A015360-004 None Detected-Yellow Mastic
None Detected-Gray Floor Tile12x12 Gray Floor Tile w/ Yellow Mastic FT-01 B015360-005 None Detected-Yellow Mastic
None Detected-Gray Floor Tile12x12 Gray Floor Tile w/ Yellow Mastic FT-01 C015360-006 None Detected-Yellow Mastic
None Detected-Off White Wall CoveringWallpaper M-01 A015360-007
None Detected-Off White Wall CoveringWallpaper M-01 B015360-008
None Detected-Off White Wall CoveringWallpaper M-01 C015360-009
These samples were analyzed by layers. Specific layer or component asbestos content is indicated when relevant. The EPA considers a material to be asbestos containing only if it contains more than one percent asbestos by Calibrated Visual Area Estimation (CVAE). EPA regulations also indicate that Regulated Asbestos Containing Materials (RACM) -- materials which are friable or may become friable -- be further analyzed by point counting when the results indicate less than ten percent asbestos by CVAE. Arrowhead utilizes CVAE on a routine basis and does not include point counting unless specifically requested.
The results may not be reproduced except in full.
PLM Report Summary - Revision 4 - 08/04/2022- Issuing Authority: Monte Hall, PG mailto:mhall005@tampabay.rr
Clearwater, Florida 33759
NVLAP Lab Code 200703-0813-679-0720 / mhall005@tampabay.rr.com
Client : GLE Associates Lab Set No. : 015360
Project : GRU Mobile and Transformer 25-15360AT Job No. :
25000-32247Client Project No.: Report Date : 11/25/2025
Identification : Asbestos, Bulk Sample Analysis Sample Date : 11/21/2025
Test Method : Polarized Light Microscopy / Dispersion Staining (PLM/DS) Page 2 of 3App E to Sub E of 40 CFR Part 763 and EPA Method 600/R-93/116
On 11/25/2025, eighteen (18) bulk material samples were submitted by Michael D Harrel for asbestos analysis by PLM/DS.
Copies of Bulk Sample Analysis sheets are attached; additional information may be found therein. The results are summarized below:
Asbestos ContentSample Description / LocationLab Sample No.
None Detected-Gray MasticGray Seal M-02 A015360-010
None Detected-Gray MasticGray Seal M-02 B015360-011
None Detected-Gray MasticGray Seal M-02 C015360-012
None Detected-Roof Membrane PolymerBlack Roof Membrane / Tar M-03 A015360-013 None Detected-Tan Mastic
None Detected-Roof Membrane PolymerBlack Roof Membrane / Tar M-03 B015360-014 None Detected-Tan Mastic
None Detected-Roof Membrane PolymerBlack Roof Membrane / Tar M-03 C015360-015 None Detected-Tan Mastic
None Detected-White Paint TextureCeiling Texture S-01 A015360-016
None Detected-White Paint TextureCeiling Texture S-01 B015360-017
None Detected-White Paint TextureCeiling Texture S-01 C015360-018
These samples were analyzed by layers. Specific layer or component asbestos content is indicated when relevant. The EPA considers a material to be asbestos containing only if it contains more than one percent asbestos by Calibrated Visual Area Estimation (CVAE). EPA regulations also indicate that Regulated Asbestos Containing Materials (RACM) -- materials which are friable or may become friable -- be further analyzed by point counting when the results indicate less than ten percent asbestos by CVAE. Arrowhead utilizes CVAE on a routine basis and does not include point counting unless specifically requested.
The results may not be reproduced except in full.
Clearwater, Florida 33759
NVLAP Lab Code 200703-0813-679-0720 / mhall005@tampabay.rr.com
Client : GLE Associates Lab Set No. : 015360
Project : GRU Mobile and Transformer 25-15360AT Job No. :
25000-32247Client Project No.: Report Date : 11/25/2025
Identification : Asbestos, Bulk Sample Analysis Sample Date : 11/21/2025
Test Method : Polarized Light Microscopy / Dispersion Staining (PLM/DS) Page 3 of 3App E to Sub E of 40 CFR Part 763 and EPA Method 600/R-93/116
SCOPE OF THIS REPORT
These samples were obtained as a part of a building survey; this report is only intended to be used as a part of the survey report issued by the surveyor. This report explains the laboratory analysis and results. The surveyor's report explains the sampling protocol used, when the samples were obtained, the location(s) of the samples, where the materials were observed in the building, quantities of materials observed, condition of the materials and the extent of his/her survey. Sample locations and material descriptions are given by the surveyor on the chain of custody but included here (possibly abbreviated)only as a convenience for the reader.
This report may not be reproduced without written permission of Arrowhead Technologies, LLC and must be reproduced in full.
STATEMENT OF LABORATORY ACCREDITATION
The samples were analyzed in general accordance with the procedures outlined in the Method for the Determinationof Asbestos in Bulk Building Materials, EPA/600/R-93/116,and the Interim Method for the Determinationof Asbestos in Bulk Insulation Samples, EPA 600/M4-82-020. The results of each bulk sample relate only to the material tested as received and the results shall not be used to claim product endorsement by NVLAP or any agency of the U.S. Government.
Floor tile and other resinously bound materials, when analyzed by the EPA method, may yield false negative results because of limitations in separating closely bound fibers and in detecting fibers of small length and diameter. When a definitive result is required, Arrowhead recommendsutilizing alternative methods of identification, including Transmission Electron Microscopy.
Specific questions concerning bulk sample results shall be directed to the Laboratory Director.
Analyst : Monte Hall, P.G.
Monte Hall, P.G.Laboratory Director :
Florida Registration No. 1658
Approved Signatory :
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