Asbestos Report_Dorm 4359 Samples.pdf

Attn:

Customer Project:

Reference #: Date: 9/14/2020

Analysis and Method

Discussion

Qualifications

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Materials Characterization - Bulk Asbestos Analysis

Summary of polarizing light microscopy (PLM / Stereomicroscopy bulk asbestos analysis) using the methods described in 40CFR Part 763 Appendix E to Subpart E (Interim and EPA 600 / R-93 / 116 (Improved). The sample is first viewed with the aid of stereomicroscopy. Numerous liquid slide preparations are created for analysis under the polarized microscope where identifications and quantifications are preformed. Calibrated liquid refractive oils are used as liquid mouting medium. These oils are used for identification (dispersion staining). A calibrated visual estimation is reported, should any asbestiform mineral be present. Other techniques such as acid washing are used in conjugation with refractive oils for detection of smaller quantities of asbestos. All asbestos percentages are based on calibrated visual estimation traceable to NIST standards for regulated of asbestos. Traceability to measurement and calibration is achieved by using known amounts and types of asbestos from standards where analyst and laboratory accuracy are measured. As little as 0.001% asbestos can be detected in favorable samples, while detection in unfavorable samples may approach the detection limit of 0.50% (well above the laboratory definition of trace).

Vermiculite containing samples may have trace amounts of actinolite-tremolite, where not found be PLM should be analyzed using TEM methods and / or water separation techniques. Suspected actinolite/vermiculite presence will be indicated through the sample comment section of this report.

Fibrous talc containing samples may even contain a related asbestos fiber known as anthophyllite. Under certain conditions the same fiber may actually contain both talc and anthophyllite (a phenomenon called intergrowth). Again, TEM detection methods are recommended. CA Labs PLM report comments will denote suspected amounts of asbestiform anthophyllite with talc, where further analysis is recommended.

Some samples (floor tiles, surfacings, etc.) may contain fibers too small to be detectable by PLM analysis and should be analyzed by TEM bulk protocols.

Laboratory Analysis Report - Polarized Light SEMS, Inc Ioannis Petikas 11628 S Choctaw Drive Baton Rouge, LA 70815

BAFB 4359 & FS #2

CBR20094216

A "trace asbestos" will be reported if the analyst observes far less than 1% asbestos. CA Labs defines "trace asbestos" as a few fibers detected by the analyst in several preparations and will indicate as such under these circumstances.

Quantification of <1% will actually be reported as <=1% (allowable variance close to 1% is high). Such results are ideal for point counting, and the technique is mandatory for friable samples (NESHAP, Nov. 1990 and clarification letter 8 May 1991) under 1% percent asbestos and the "trace asbestos". In order to make all initial PLM reports issued from CA Labs NESHAP compliant, all <1% asbestos results (except floor tiles) will be point counted at no additional charge.

CA Labs is accredited by the National Voluntary Accreditation Program (NVLAP) for selected test methods for airborne fiber analysis (TEM), and for bulk asbestos fiber analysis (PLM). All analysts have a college degree in a natural science (geology, biology, or environmental science) or are recognized by a state professional board in one these disciplines .Extensive in-house training programs are used to augment education background of the analyst. The group leader of polarized light has received supplemental McCrone Research training for asbestos identification. This report is not covered by the scope of AIHA accreditation. Analysis performed at CA Labs, LLC 12232 Industriplex, Suite 32 Baton Rouge, LA 70809.

Labs

A

C

Polarized Light Asbestiform Materials Characterization

Customer Info: Attn: Customer Project:

9/14/2020 24 hr 9/14/2020

Phone # 9/10/2020 Fax # 1095-0005

Laboratory Director

Chris Williams

97% qu, ma, ca04-2 Green Floor Tile Y 3% Chrysotile

10% ce 90% qu, gy

BAFB-0910-

04 04-1 Tan Mastic Y None Detected 100% qu, bi

03-2 White Drywall with Paper N None Detected

100% qu, bi

BAFB-0910-

03 03-1 Gray Textured Surfacing N None Detected

100% qu, mi, bi, ca

None Detected 100% qu, ca

02-2 Tan Mastic Y None Detected

BAFB-0910-

02 02-1 Tan Floor Tile Y

11628 S Choctaw Drive Baton Rouge, LA 70815 Date:

Turnaround Time: Samples Received:

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

225-924-2002 Date Of Sampling:

225-924-2004 Purchase Order #:

Ioannis Petikas CA Labs Project #:

SEMS, Inc

BAFB 4359 & FS #2

CBR20094216

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Y None Detected 40% ce 60% qu, ma, ca

BAFB-0910-

01 01-1 White Insulation

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

Analyst Alicia Stretz

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

David Darby Senior Analyst

Labs

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C