19790 Cherokee Bldg. 2011 Roof Top.pdf
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- Roof Repair B2011
- Solicitation number
- W911SG25BA028
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This document is a Polarized Light Microscopy (PLM) Bulk Asbestos Analysis Report prepared by Micro Analytical Services, Inc. for Cherokee Nation 35, LLC, related to Building 2011 Roof Top at Fort Bliss, Texas. The laboratory analyzed nine samples (2011-01 through 2011-09) of black fibrous roof penetrations and roof shingles, using EPA-approved testing methods. Notably, none of the samples tested positive for asbestos. The samples consisted of various non-asbestos constituents, including 20-30% aggregate, 20-30% cellulose/fibrous glass, and 40-60% asphalt. The analysis was conducted on May 17, 2025, using polarized light microscopy with dispersion staining, and the laboratory holds accreditation from the National Voluntary Laboratory Accreditation Program (NVLAP) and a Texas Department of State Health Services license.
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Micro Analytical Services, Inc. 11301 Richmond Ave. Ste.K100B♦Houston♦Tx 77082♦Phone(281)497-4500♦Fax(281)497-4517
NVLAP Lab Code: 200618-0 TDSHS License No. 30-0341
PLM BULK ASBESTOS ANALYSIS REPORT
CLIENT: Cherokee Nation 35, LLC MAS JOB NO.: 19790-00
PROJECT: Bldg. 2011 Roof Top REPORT DATE: May 17, 2025
IDENTIFICATION: Asbestos, Bulk Sample Analysis, Quantitation by Visual Area Estimation
TEST METHOD: Polarized Light Microscopy with Dispersion Staining EPA - 40 CFR Appendix E to Subpart E of Part 763, Interim Method of the Determination of Asbestos in Bulk Insulation Samples EPA - 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Material
STATEMENT OF LABORATORY ACCREDITATION
These samples were analyzed at Micro Analytical Services, Inc. in the Asbestos Laboratory at 11301 Richmond Ave. Suite K100B, Houston, Texas, 77082. The Laboratory holds accreditation from the National Institute of Standards and Technology under the National Voluntary Laboratory Accreditation Program (NVLAP). This laboratory is also licensed and authorized to perform as an Asbestos Laboratory in the State of Texas within the purview of Texas Civil Statutes, Article 4477-3a, as amended, so long as this license is not suspended or revoked and is renewed according to the rules adopted by the Texas Board of Health.
The samples were analyzed in general accordance with the procedures outlined in the EPA - 40 CFR Appendix E to Subpart E of Part 763, Interim Method of the Determination of Asbestos in Bulk Insulation Samples, EPA - 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Material, under AHERA, for the analysis of asbestos in building materials by polarized light microscopy. The results of each bulk sample relate only to the material tested as submitted to the laboratory and the results shall not be used to claim product endorsement by NVLAP or any agency of the U.S.
Government.
Specific questions concerning bulk sample results shall be directed to the Asbestos Bulk Laboratory at Micro Analytical Services, Inc.
Analyst: Tony T. Dang
Approved Signatory:
Micro Analytical Services, Inc. 11301 Richmond Ave. Ste. K100B♦Houston♦Texas 77082♦Phone(281) 497-4500♦Fax(281) 497-4517
Samples have been analyzed by the EPA - 40 CFR Appendix E to Subpart E of Part 763, Interim Method of the Determination of Asbestos in Bulk Insulation Samples, EPA - 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Material. The test results herein relate only to the sample submitted and analyzed. This report may only be reproduced in full with the approval of the Bulk Asbestos Laboratory of Micro Analytical Services (MAS). The above percentages are visual estimates of area percent. MAS is not responsible for any errors resulting from improper or incorrect sampling or shipping procedures. These samples will be retained for a period of 30 days. Accreditation by NVLAP in no way constitutes or implies product certification, approval, or endorsement by NIST. Some materials, especially floor tiles, contain asbestos fibers too thin to be detected by this method. NVLAP Lab Code: 200618 TDSHS License: 30-0341
Analyzed by: Tony Dang Approved NVLAP Signatory: Tony Dang
Polarized Light Microscopy Analysis
Cherokee Nation 35, LLC MAS Project #: 19790-00 DPW-Environmental Div. Date Received: 05/15/2025 Fort Bliss, Tx 79916 Date Analyzed: 05/17/2025
Project Name: Bldg. 2011 Roof Top Field ID/ Layer # Sample Description Asbestos Asbestos Non-Asbestos Lab ID Detected? Constituents Constituents (Yes/No) (%) (%) 2011-01 1 Black fibrous roof penetration No 20% Aggregate MAS603908 20% Cellulose 60% Asphalt 2011-02 1 Black fibrous roof penetration No 20% Aggregate MAS603909 20% Cellulose 60% Asphalt 2011-03 1 Black fibrous roof penetration No 20% Aggregate MAS603910 20% Cellulose 60% Asphalt 2011-04 1 Black fibrous roof shingle No 30% Aggregate MAS603911 with pebbles 30% fibrous Glass 40% Asphalt 2011-05 1 Black fibrous roof shingle No 30% Aggregate MAS603912 with pebbles 30% fibrous Glass 40% Asphalt 2011-06 1 Black fibrous roof shingle No 30% Aggregate MAS603913 with pebbles 30% fibrous Glass 40% Asphalt 2011-07 1 Black fibrous roof shingle No 30% Aggregate MAS603914 with pebbles 30% fibrous Glass 40% Asphalt 2011-08 1 Black fibrous roof shingle No 30% Aggregate MAS603915 with pebbles 30% fibrous Glass 40% Asphalt 2011-09 1 Black fibrous roof shingle No 30% Aggregate MAS603916 with pebbles 30% fibrous Glass 40% Asphalt
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