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Revised Report Summarizing Bulk Sampling Analytical Results for Roof Materials March 15, 2022 <br /> to Determine Asbestos Content Page 2 <br />Orange County Whitted Building Roof System Replacement Project <br />300 West Tryon Street <br />Hillsborough, North Carolina 27278 <br />Project No.: OLME-2022-02 <br />area that contains materials that seem by texture, color and wear to be uniform and applied during the same <br />general time period. <br />ANALYSIS PROCEDURES <br />Each bulk sample of suspect roofing material obtained was analyzed using Polarized Light Microscopy <br />(PLM), coupled with Dispersion Staining as outlined in the Environmental Protection Agency's (EPA) <br />accredited test method EPA 600/M4-82-020 that incorporates method EPA-600/R-93/116 where applicable <br />as per 40 CFR 763. Summaries of the bulk samples identified to contain asbestos fibers in amounts greater <br />than one percent (1%) is attached in the Sections of this report entitled, “Summary of Analysis Results”. A <br />complete summary of the bulk sampling performed is attached in the Sections entitled, “Asbestos Bulk <br />Sampling Record”. <br />SUMMARY OF ANALYSIS RESULTS <br />Asbestos was not detected in bulk samples of roof core, roof flashing, various types of sealants, blown-in <br />insulation (perlite) and gypsum wallboard and joint seam sealant obtained from throughout the accessible roof <br />systems as identified. The blown-in insulation and gypsum wallboard was sampled from the location where <br />a “new” roof access hatch is planned. We have attached a copy of the PLM laboratory report for each of the <br />identified roofs in section entitled, “AmeriSci Richmond - PLM Bulk Asbestos Report”. We have also <br />attached “Photographs”, which detail the locations where sampling was performed. We have also attached <br />a “Site and Sampling Locations Drawing” which displays the roof layouts and bulk sampling locations. <br />QUALIFICATIONS <br />This report summarizes OLME’s evaluation of the conditions observed at the Orange County Whitted <br />Building roof system(s) identified for replacement. Our findings are based upon our observations, <br />discussions and the analytical results for the bulk sampling obtained. Any conditions discovered which <br />deviate from the data contained in this report should be presented to us for our evaluation. <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD