Polarized_Light_Microscopy_Dispersion_Staining_Report_Summary.pdf
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- Attached to
- Demolition, Asbestos Abatement, Lead Paint & Hazardous Materials Removal – Downtown Structures
- Solicitation number
- ITB 2026-019
- Issued by
- Alachua County, Graceville City, Florida
About this file
This is a Polarized Light Microscopy (PLM) Dispersion Staining asbestos analysis report prepared by Arrowhead Technologies for GLE Associates regarding a demolition and hazardous materials removal project for Gainesville Regional Utilities (GRU) in Gainesville, Florida. The report documents bulk sample analysis of eighteen material samples collected on November 21, 2025, from the GRU Mobile and Transformer facility (Project 25-15360AT). The samples analyzed included drywall panels, floor tiles with mastic, wall covering wallpaper, gray sealant mastic, roof membrane with tar, and ceiling texture, all tested in triplicate (three samples each material type) using EPA Method 600/R-93/116 and Appendix E to Subpart E of 40 CFR Part 763. All eighteen bulk samples returned negative results for asbestos content, with none of the tested materials—tan drywall paper backing, white drywall material, gray floor tiles, yellow mastic, off-white wall covering, gray mastic sealant, black roof membrane with tan mastic, and white ceiling texture—containing detectable asbestos. The analysis was conducted in accordance with EPA procedures for determination of asbestos in bulk building materials, and the report was issued on November 25, 2025, by Laboratory Director Monte Hall, P.G., under NVLAP Lab Code 200703-0813-679-0720.
The absence of asbestos-containing materials identified in this survey report is significant for the pending demolition project, as it documents compliance with EPA asbestos identification standards and establishes baseline conditions for the GRU Mobile Building and Transformer Shop components of the broader multi-structure demolition, asbestos abatement, and hazardous materials removal solicitation. The report explicitly notes that floor tiles and resinously bound materials analyzed by EPA methods may yield false negative results due to limitations in fiber separation and detection, and recommends Transmission Electron Microscopy for definitive results when required. The findings serve as supporting documentation for the comprehensive demolition and environmental remediation project scheduled with a mandatory pre-bid meeting on January 9, 2026, and bid responses due February 5, 2026.
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Text version
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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