OLM Environmental, LLC PHONE: (919) LOCKWOOD FOLLY LANE; RALEIGH, NC CELLPHONE: (919)

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1 OLM Environmental, LLC PHONE: (919) LOCKWOOD FOLLY LANE; RALEIGH, NC CELLPHONE: (919) July 10, 2015 Zapolski Real Estate, LLC 501 Washington Street Durham, North Carolina Attention: Subject: Alixander Zapolski Property Manager Report Summarizing Cleaning Activities and Ambient Air Sampling Results Performed During the Replacement of Water-Damaged Suspended Ceiling Panels CVS/Pharmacy Plaza Franklin Street Office Building 6 th Floor Near Lobby Entrance and in Offices 6208B, 6310, 6312 and East Franklin Street Chapel Hill, North Carolina OLME Project No.: OLME Dear Mrs. Zapolski: OLM Environmental, LLC (OLME) is pleased to present this report summarizing the results of the ambient air sampling obtained during the replacement of water-damaged ceiling panels from areas throughout the 6 th Floor at the above-mentioned property. As per the Operations and Maintenance (O&M) plan prepared for the property, the work was performed. OLME was also contracted to assist the properties staff with the cleanup and obtain ambient air sampling to determine the air quality resulting from the work activities. This report summarizes our work observations and the ambient air monitoring results obtained. This work was performed on July 9, 2016 after tenants vacated the floor. OLME representative, Oral McGirt, was also onsite during the work and met with the property staff to coordinate the work and to establish cleaning procedures to follow, as per the O&M plan and current Federal, State and local regulations. Prior to opening the ceiling, 6-mil drop poly sheeting was placed beneath the area to catch any falling debris during the work. Pre-cleaning of areas having severely damaged ceilings immediately performed to minimize excessive airborne migration of the debris. Water was then mist on each ceiling panel and adjacent affected areas above ceiling to minimize the release of airborne debris during disturbance. During the cleaning, a High Efficiency Particulate Air (HEPA) equipped vacuum was used to remove fallen debris from the removed ceiling panels and from

2 Report Summarizing Cleaning Activities and Ambient Air Sampling Results July 10, 2016 Performed During the Replacement of Water-Damaged Suspended Ceiling Panels Page 2 CVS/Pharmacy Plaza Franklin Street Office Building 6th Floor Near Lobby Entrance and in Offices 6208B, 6310, 6312 and East Franklin Street Chapel Hill, North Carolina OLME Project No.: OLME adjacent panels surrounding the access opening. panels were installed. Once visibly cleaned, installation of the replacement Mr. McGirt and property staff then removed, cleaned and bagged each drop poly cloth and then vacuumed affected areas in each office. The asbestos-contaminated debris generated during the work was placed inside 6-mil poly waste disposal bag(s) and again be coated with water to minimize fiber release. Once adequately filled, waste was then gooseneck sealed and then placed in a second waste bag and sealed. Intact ceiling panels were stacked and wrapped in multiple layers of 6-mil poly sheeting and sealed. Ambient air sampling was performed to determine the level of airborne particulate generated during the work and to gauge the thoroughness of the cleaning. Sampling was performed to gauge the level of airborne particulate generated by the work. Sampling and analyzes of the air sampling obtained were performed by Mr. McGirt, who maintains the appropriate State of North Carolina accreditation for the type of services performed. Details of Mr. McGirt s accreditation information are attached table is entitled, OLME Project Personnel Summary Table. Personal Protective Equipment: The following summarizes the types of personal protective equipment (PPE) worn during the work: DESCRIPTION OF WORK Area Preparations Cleaning Activities (Worn by Mr. McGirt) Waste Loadout PERSONAL PROTECTIVE EQUIPMENT None Half-Face Negative Pressure Respirators Equipped With P-100 Rated HEPA Filters Disposable Suits and Safety Glasses None

3 Report Summarizing Cleaning Activities and Ambient Air Sampling Results July 10, 2016 Performed During the Replacement of Water-Damaged Suspended Ceiling Panels Page 3 CVS/Pharmacy Plaza Franklin Street Office Building 6th Floor Near Lobby Entrance and in Offices 6208B, 6310, 6312 and East Franklin Street Chapel Hill, North Carolina OLME Project No.: OLME Air Sampling Collection and Analysis Procedures: The ambient air samples were obtained using the Asbestos Hazard Emergency Response Act (AHERA) sampling and analysis protocol. The ambient air sampling were obtained and analyzed using Phase Contrast Microscopy sampling and analysis procedures. Air sampling performed during the work was determined to be acceptable for public access. Analysis of the ambient air sampling performed was determined to be acceptable for public access, less than 0.01 fiber per cubic centimeter of air (f/cc) for each sample obtained, as per the North Carolina State regulations. Summaries of our air sampling methodology and the Phase Contrast Microscopy Air Sample Data Sheet are attached. OLME appreciates the opportunity to provide these asbestos-related services. Feel free to contact us if you have any questions concerning this report. Sincerely, OLM Environmental, LLC. Oral L. McGirt Asbestos Projects Manager Attachments: OLME Project Personnel Summary Table Air Monitoring Methodology Phase Contrast Microscopy - Air Sample Data Sheet

4 OLME PROJECT PERSONNEL

5 CVS/PHARMACY PLAZA FRANKLIN STREET OFFICE BUILDING 6TH FLOOR NEAR LOBBY ENTRANCE AND IN OFFICES 6208B, 6310, 6312 AND EAST FRANKLIN STREET CHAPEL HILL, NORTH CAROLINA OLME PROJECT NO.: OLME PERSONNEL NAME Air Monitoring Accreditation Number Expiration Date Inspector Accreditation Number Expiration Date Designer Accreditation Number Expiration Date SAM* Accreditation Number Expiration Date Oral L. McGirt

6 AIR MONITORING METHODOLOGY

7 AIR MONITORING METHODOLOGY The final ambient air clearance sampling for this project were obtained and analyzed to determine the fiber concentration in each air samples. The samples were analyzed by Phase Contrast Microscopy using the National Institute for Occupational Safety and Health (NIOSH) 7400 Method. This method is essentially similar to the Occupational Safety and Health Administration (OSHA) Reference Method and specifies the procedure for analyzing air samples for asbestos. The 7400 Method counts all fibers that meets the counting criteria and does not distinguish between asbestos and non-asbestos fibers. To distinguish between asbestos and non-asbestos fibers would require analysis by Transmission Electron Microscopy. The concentration of airborne fibers in an air sample is controlled by several parameters, including total number of fibers counted on the filter, total number of fields counted, filter area, monitoring time and flow rate. The total number of fibers and fields counted in a sample are governed by the counting rules of the 7400 Method. The filter area is a constant and the monitoring time is a known factor controlled by the sampler. Several high flow electric pumps were utilized to obtain area monitoring. Documentation of the calibration of the pumps was performed before and after monitoring using a secondary standard (a rotometer), which in turn is calibrated every six months using a primary standard. Area samples were generally collected by pulling air at a rate of 10.0 liters per minute (lpm) through a 25-millimeter diameter mixed cellulose ester filter (pore size 0.8 micrometer). Some filter cassettes were analyzed as box blanks. One cassette from every box of fifty was analyzed without having been opened to determine the suitability of that particular box of cassettes for air monitoring. Monitoring was performed for a period of sufficient duration for the limit of qualification to be less than 0.01 f/cc for area sampling. Samples with fiber concentrations below the quantification limit were reported as below (<) the quantification limit.

8 PHASE CONTRAST MICROSCOPY AIR SAMPLE DATA SHEET

9 OLME Job No.: OLME Collection Date: 07/09/16 Project Name: CVS/Pharmacy Plaza Analysis Date: 07/09/16 Contractor: N/A Analyst Name: Oral L. McGirt NC Air Monitor No Franklin Street Office Building 6 th Floor Near Lobby Entrance and in Offices 6208B, 6310, 6312 and E. Franklin Street Chapel Hill, North Carolina Project Activity: O&M Work Cleaning Above Ceilings for Damage Assessment Access LAB ID No. Job ID. No. General Location Flow Rate (L/M) Start Time Stop Time Total Time (mins.) Volume (Liters) No. of Fibers No. of Fields Conc. DL RSO-01 Office 6208B RSO -02 Office RSO -03 Office RSO -04 Main Corridor Near Office RSO -05 Office RSO -06 Office 6208B - Main Corridor Side RSO -07 Field Blank Clean RSO -08 Lab Blank Clean --- Samples were analyzed by methods as detailed in Issue 2 of Revision 3 of NIOSH s Method Oral L. McGirt Collector s Signature Oral L. McGirt Analyst s Signature Gary P. Alexander Reviewer/SAM No Note: Air Sampling Data was provided to the SAM for review and approval. L/M = liters per minute DL = Detection Limit SAM = Supervising Air Monitor