Indoor Air Quality Testing. Horry County Schools

Transcription

1 ! Report of: Indoor Air Quality Testing Horry y Schools Conway, SC Palme5o EHS Report No: Submi5ed January 29, 2019 Prepared for: Horry y Schools Prepared By: Palme5o EHS, LLC. Suite F, Box (Phone) (Fax)

2 ! January 29, 2019 Horry y Schools 335 Four Mile Rd. Conway, SC 29528! Safety Industrial Hygiene OSHA Compliance Training Attention: Ms. Tammy Trulove Reference: REPORT OF INDOOR AIR QUALITY TESTING Report No Dear Ms. Trulove:, LLC () is pleased to provide the enclosed report for the referenced site. The sampling was conducted on January 21, The report includes an executive summary, investigative methods, results and conclusions. This work was performed in general conformance with Proposal Number dated January 14, This report is provided for the sole use of Horry y Schools. Use of this report by any other parties will be at such party's sole risk and disclaims liability for any such use or reliance by third parties. The results presented in this report are indicative of conditions only during the time of the sampling period and of the specific areas referenced. We appreciate the opportunity to work with you. If you have any questions concerning this report, please call us at (803) Sincerely,, LLC Rachel Schlachter, MPH, CSP EHS Specialist, CIH, CSP, CET President! Gary Eubanks Vice President, LLC. Ste. F # (Phone) (Fax)

3 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Table of Contents Executive Summary... 4 Scope of Work... 5 Materials and Methods... 5 Environmental Parameters... 5 Mold Samples... 6 Results and Discussion... 6 Visual Assessment... 6 Environmental Parameters... 7 Mold Samples Conclusions and Recommendations Appendix I... 25, LLC! 3

4 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Executive Summary conducted indoor air quality testing throughout St. James Elementary School in Myrtle Beach, SC on January 21, The testing was conducted indoors and outdoors for comparison. We identified the following conditions during our visit: We observed mold on the HVAC supply diffusers in Room E107, the K Workroom, and Portable 197, and on a soft binder in Room A111. We did not detect musty odors in any of the areas visited at St. James Elementary School on the day of our visit. The results of the environmental parameter testing revealed that carbon dioxide was within normal limits in all 80 of the rooms/areas visited on January 21, Temperature was slightly below normal limits in the following rooms/areas: Front Office (Reception Desk), P111, P102, Portable 220, Portable 197, Portable 311, Portable 215, Portable 205, Portable 286, Portable 141, Portable 194, Portable 185, Portable 266, and A105. Temperature was within normal limits in all of the remaining rooms/areas visited. Relative humidity was below normal limits in the following rooms/areas: E107, E100, E101, E102, E104, E105, E106, K101, K102, K103, K104, K105, K106, the K Workroom, P105, M104, Portable 220, I111 (Multipurpose), Portable 197, Portable 311, Portable 215, Portable 205, Portable 286, Portable 141, Portable 194, Portable 185, Portable 266, A105, A107, A109, A110, A111, Reading Room, Conference Room (attached to Reading Room), Cafeteria, and the I Workroom. Relative humidity was within normal limits in all of the remaining rooms/areas visited. We observed water stained ceiling tiles in the following rooms: Conference Room A100, A104, K103, K104, P107, M103, M104, P115, P120, IC100, I104, I109, I108, I110, and A110. We observed staining and/or dust build up on the HVAC supply diffusers in the following rooms: A103, E107, K105, K Workroom, P109, P107, I100, IC100, I101, I103, I102, I104, I107, I106, I109, I108, Portable 220, I110, I112, I111, Portable 197, Portable 311, Portable 215, Portable 286, Portable 141, Portable 194, Portable 185, A105, A107, A109, A110, I Workroom, and the Cafeteria. We observed dust accumulation on the HVAC return vents in the following rooms: A103, A104, P106, Portable 197, Portable 215, Portable 205, Portable 141, Portable 194, Portable 185, and A105. Efflorescence was observed on the interior side of the exterior concrete walls in Rooms P109, P115, P116, P117, and I104. The surface swabs collected from the staining on the HVAC supply diffusers in Room E107, the K Workroom, and Portable 197, as well as the staining on the binder in Room A111 were positive for mold spores. No spores were detected on the surface swab collected from the efflorescence on the interior side of the exterior concrete wall in Room P117. Mold spores were not amplified in the Front Office (Reception Desk), Conference Room A100, A101, A103, A104, E107, A108, E101, E102, E104, E105, E106, K101, K103, K104, K105, K106, K Workroom, P113, P111, P108, P106, P104, M100 (Media Center - desk area), M102, M103, M101, P110, P112, P115, P117, P116, P120, I100, IC100, I101, I103, I102, I104, I105, I107, I106, I109, I108, I110, I112, I114, Portable 311, Portable 215, Portable 205, Portable 141, Portable 194, Portable 185, Portable 266, the Conference Room attached to the Reading Room, A113, the cafeteria, or the I Workroom on January 21, 2019., LLC! 4

5 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Mold spores were amplified in Rooms P107, P102, P105, P103, A110, E100, K102, Portable 220, I111 (Multipurpose), A106, P109, Portable 197, A105, A107, A109, A111, the Reading Room, Portable 286, M100 (Media Center - Nonfiction area), M104, P100, P118, and P114 on the day of our visit. Recommendations are provided in the Conclusions and Recommendations section of this report. Scope of Work conducted indoor air quality testing throughout St. James Elementary School in Myrtle Beach, SC on January 21, The purpose of the sampling was to determine if airborne mold spores were elevated above outdoor levels. We conducted a walk-through visual assessment, environmental parameter testing, surface and air sampling for mold spores during our visit. Materials and Methods Environmental Parameters Carbon dioxide (CO2), temperature and relative humidity were measured using a TSI IAQ Calc direct reading instrument to determine the relative comfort parameters of the subject area and to evaluate conditions that may promote amplification of microorganisms. The American Society for Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE) has established guidelines for selected indoor air quality parameters such as temperature, relative humidity (RH) and carbon dioxide (CO2). These environmental parameters are important determinants for occupant s perceptions of thermal comfort, and ASHRAE Standard recommends ranges for temperature and RH that most occupants (>80%) will find comfortable. Acceptable temperature ranges differ from winter to summer and are a function of RH levels that range between 30% and 60%. RH below 30% is unacceptable because of the effect of dry air on the eyes, skin and mucous membranes, and RH above 60% may support the growth of pathogenic or allergenic microorganisms indoors. The following temperature ranges are considered acceptable based on the standard: Summer: 74ºF to 80ºF (for RH = 30%) and 73ºF to ºF (for RH = 60%). Winter: 69ºF to 76ºF (for RH = 30%) and 68ºF to 74ºF (for RH = 60%) The indoor concentration of CO2 is a surrogate for occupant-generated pollutants that may be odorous, and is an indicator of the adequacy of the rate of outside air supply per occupant (dilution ventilation). The higher the indoor concentrations of CO2, the less effective the ventilation system is in dilution of typical indoor air contaminants and body effluents. ASHRAE standard recommends an indoor to outdoor differential concentration of CO2 to be no greater than 700 parts per million (ppm) to meet comfort (odor) criteria., LLC! 5

6 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Mold Samples (viable and non-viable) airborne fungal (mold) spores were measured indoors and outdoors using Zefon Air-O-Cell spore traps with a calibrated vacuum pump. Air sampling was performed indoors and outdoors for comparison. The samples were immediately shipped for overnight delivery and analyzed by light microscopy for viable and non-viable mold spores by Scientific Analytical Institute, which is accredited by the American Industrial Hygiene Association (AIHA). Surface sampling for mold was conducted by swabbing a surface of interest with a sterile swab. The samples were immediately shipped for overnight delivery and analyzed by light microscopy for viable and non-viable mold spores by Scientific Analytical Institute, which is accredited by the American Industrial Hygiene Association (AIHA). Microbial testing as a part of this report included testing and analysis for some biological agents commonly present in indoor air. It did not include testing and analysis for all known biological agents. Testing for biological contaminants does not include viruses or bacteria, unless specifically noted otherwise, and then only those viruses and bacteria specified. Results and Discussion Visual Assessment We were asked to collect air samples for mold throughout St. James Elementary School in Myrtle Beach, SC on January 21, The following observations were made at the time of our visit. We observed mold on the HVAC supply diffusers in Room E107, the K Workroom, and Portable 197, as well as on a soft Syracuse binder in Room A111. We did not detect any musty odors in any of the ares visited on January 21, 2019 at the time of our visit. We observed water stained ceiling tiles in the following rooms: Conference Room A100, A104, K103, K104, P107, M103, M104, P115, P120, IC100, I104, I109, I108, I110, and A110. We observed staining and/or dust build up on the HVAC supply diffusers in the following rooms: A103, E107, K105, K Workroom, P109, P107, I100, IC100, I101, I103, I102, I104, I107, I106, I109, I108, Portable 220, I110, I112, I111, Portable 197, Portable 311, Portable 215, Portable 286, Portable 141, Portable 194, Portable 185, A105, A107, A109, A110, I Workroom, and the Cafeteria. We observed dust accumulation on the HVAC return vents in the following rooms: A103, A104, P106, Portable 197, Portable 215, Portable 205, Portable 141, Portable 194, Portable 185, and A105. We observed dust accumulating on the edges of the metal ceiling tile brackets (mainly in front of the HVAC supply diffusers) in the following rooms: E101, E105, I100, and IC100. We observed an accumulation of dust on the retractable screen in Room P116. Efflorescence (a white chalky powder) was observed on the exterior concrete walls in Rooms P109, P115, P116, P117, and I104. Efflorescence is caused by soluble salts, which are pushed to the surface by water intrusion into the concrete., LLC! 6

7 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 We observed rust on the HVAC wall units in Rooms P105 and A113. We observed staining on the ceiling, likely from prior water damage, in Portable 215 and Portable 205. We observed a small amount of dust/dirt on the concrete block walls in Rooms A109, I112, I103, and the Cafeteria. In the Cafeteria, the dust/dirt was around the HVAC supply diffusers, as well as on the concrete block columns in the middle of the Cafeteria in front of the HVAC supply diffusers. Environmental Parameters A summary of the environmental parameters tested (temperature, relative humidity, and carbon dioxide) are provided in Table I. The results of the environmental parameter testing revealed that carbon dioxide was within normal limits in all 80 of the rooms/areas visited on January 21, Temperature was slightly below normal limits in the following Rooms: Front Office (Reception Desk), P111, P102, Portable 220, Portable 197, Portable 311, Portable 215, Portable 205, Portable 286, Portable 141, Portable 194, Portable 185, Portable 266, and A105. Temperature was within normal limits in all of the remaining rooms/areas visited. Relative humidity was below normal limits in the following Rooms:E107, E100, E101, E102, E104, E105, E106, K101, K102, K103, K104, K105, K106, the K Workroom, P105, M104, Portable 220, I111 (Multipurpose), Portable 197, Portable 311, Portable 215, Portable 205, Portable 286, Portable 141, Portable 194, Portable 185, Portable 266, A105, A107, A109, A110, A111, Reading Room, Conference Room (attached to Reading Room), Cafeteria, and the I Workroom. Relative humidity was within normal limits in all of the remaining rooms/areas visited. These conditions (lower relative humidity and lower temperatures) are not abnormal at this time of the year. Table I: Environmental Parameter Results January 21, 2019 Location Carbon Dioxide (ppm) Relative Humidity (Percent) Temperature (Degrees F) Outdoors (Average) Criteria < % to 60% degrees F Front Office (Reception Desk) Conference Room A A A A A E A , LLC! 7

8 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Location Carbon Dioxide (ppm) Relative Humidity (Percent) Temperature (Degrees F) E E E E E E K K K K K K K Workroom P P P P P P P P P P M100 Media Center (Non Fiction) M100 Media Center Desk M , LLC! 8

9 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Location Carbon Dioxide (ppm) Relative Humidity (Percent) Temperature (Degrees F) M M M P P P P P P P P P I IC I I I I I I I I I Portable I I , LLC! 9

10 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Location Carbon Dioxide (ppm) Relative Humidity (Percent) Temperature (Degrees F) I111 (Multipurpose) I114 (Office) Portable Portable Portable Portable Portable Portable Portable Portable Portable A A A A A Reading Room Conference Room A Cafeteria (Stage Side) Cafeteria I Workroom , LLC! 10

11 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Mold Samples We are unaware of regulatory requirements pertaining to mold associated with indoor air quality at this time. However, there are recognized guidelines for mold remediation from the Environmental Protection Agency (EPA), and New York City Department of Health Bureau of Environmental & Occupational Disease Epidemiology. Additionally, indoor air quality guidelines have been suggested for remedial decision-making by the Occupational Safety and Health Administration (OSHA), and the American Conference of Government Industrial Hygienist (ACGIH). Some of these guidelines focus on indoor to outdoor comparison, and an evaluation of fungal types. The interpretation of the results normally relies upon the professional conducting the assessment. Airborne microorganisms are ubiquitous; the presence of microorganisms is of undue concern unless they are of a significant concentration or the predominant types found indoors differ from those found outdoors. When indoor levels are significantly elevated in relation to outdoor concentrations, they are considered to be amplified. Therefore, indoor environmental conditions are such that their growth is facilitated. In general, amplification of microorganisms is present when the fungi or bacteria concentration in the air substantially exceeds the outdoor air. Exposure to excessive amounts of some common microorganisms can result in allergic or respiratory irritation in some susceptible individuals. Air sampling was performed indoors and outdoors for comparison. fungal spore (nonviable and viable fungi) concentrations were monitored. Summary results of the air samples are provided in Table II and actual laboratory results are provided in the Appendix., LLC! 11

12 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Table II: Mold Air Sampling Results January 21, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M-1 Outdoors 2430 M-2 Outdoors 2900 M-85 Outdoors 3210 M-86 Outdoors 4310 (1570) (705) () Myxomycete/Rust/Smut-like () (1490) (1020) (235) Myxomycete/Rust/Smut-like () (2040) (862) (235) (2270) (1250) (470) () Myxomycete/Rust/Smut-like () M-3 Front Office (Reception Desk) 705 (235) (157) (157) Myxomycete/Rust/Smut-like () () M-4 Conference Room A (157) () (235) Myxomycete/Rust/Smut-like () M-5 A M-6 A M-7 A () (235) () (392) () (157) (157) () () Myxomycete/Rust/Smut-like () (), LLC! 12

13 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M-8 A (157) () (157) M-9 E107 () M-10 A108 3 M-11 E M-12 E (313) (157) (157) Myxomycete/Rust/Smut-like () () (157) Aspergillus/Penicillium-like (940) () (157) () M-13 E102 NA None Detected M-14 E104 NA None Detected M-15 E105 NA None Detected M-16 E () (157) M-17 K101 Myxomycete/Rust/Smut-like () M-18 K () Aspergillus/Penicillium-like (392) () M-19 K (157) M-20 K104 NA None Detected M-21 K105 () M-22 K106 NA None Detected M-23 K Workroom () M-24 P113 NA None Detected M-25 P111 NA None Detected, LLC! 13

14 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M-26 P M-27 P (157) (235) (235) (157) (157) () () () M-28 P (157) M-29 P104 NA None Detected M-30 P M-31 P102 18,100 M-32 P105 >38,500 M-33 P103 25,500 () Aspergillus/Penicillium-like (470) (235) (862) (470) Aspergillus/Penicillium-like (4080) (157) (13,400) (862) Aspergillus/Penicillium-like (12,900) (1100) (>23,500) Myxomycete/Rust/Smut-like () (392) Aspergillus/Penicillium-like (8070) (313) (16,600) Myxomycete/Rust/Smut-like () M-34 M100 Media Center (Non Fiction) 2980 Aspergillus/Penicillium-like (235) () (2660) M-35 M100 Media Center Desk NA None Detected M-36 M (157) M-37 M103 (), LLC! 14

15 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M-38 M (157) () (1100) M-39 M101 () M-40 P (157) (235) (940) M-41 P110 () M-42 P () () M-43 P115 () M-44 P M-45 P118 3 M-46 P M-47 P (235) () (157) () (705) () () (1100) () () M-48 P120 NA None Detected M-49 I M-50 IC (313) (157) Myxomycete/Rust/Smut-like () () (157) (235) M-51 I101 NA None Detected M-52 I103 () M-53 I102 NA None Detected M-54 I104 NA None Detected, LLC! 15

16 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M-55 I () (235) () M-56 I107 NA None Detected M-57 I M-58 I (157) (392) (235) Myxomycete/Rust/Smut-like () (157) Myxomycete/Rust/Smut-like () M-59 I108 NA None Detected M-60 Portable () Aspergillus/Penicillium-like (313) M-61 I110 NA None Detected M-62 I112 NA None Detected M-63 I111 (Multipurpose) 313 () Aspergillus/Penicillium-like (235) M-644 I114 NA None Detected M-65 Portable (157) (157) M-66 Portable 311 NA None Detected M-67 Portable 215 NA None Detected M-68 Portable 205 NA None Detected M-69 Portable () (470) (392) (392) Myxomycete/Rust/Smut-like (157) (470) M-70 Portable141 () M-71 Portable 194 NA None Detected M-72 Portable 185 NA None Detected, LLC! 16

17 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M-73 Portable M-74 A M- A M-76 A M-77 A (235) (392) (392) Myxomycete/Rust/Smut-like () () (157) (313) (157) Myxomycete/Rust/Smut-like () (157) (235) (1100) (470) (157) Myxomycete/Rust/Smut-like (235) (157) () () (392) (705) (313) (157) Myxomycete/Rust/Smut-like (157) () (235) () (549) Aspergillus/Penicillium-like (1100) (1720) (627) (627) () Myxomycete/Rust/Smut-like (235) (627), LLC! 17

18 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Sample Number Location Mold (c/m 3 ) Predominant Types M- A M-79 Reading Room 2590 (157) Aspergillus/Penicillium-like (235) (470) (313) (392) Myxomycete/Rust/Smut-like (313) (157) (235) (392) Aspergillus/Penicillium-like (313) (313) (470) (157) (313) Myxomycete/Rust/Smut-like (549) () M-80 Conference Room NA None Detected M-81 A (235) () M-82 Cafeteria (Stage Side) () M-83 Cafeteria NA None Detected M-84 I Workroom () Amplification: Indoor levels substantially exceed outdoor levels. Abbreviations: c/m 3 = total mold spore counts per cubic meter, ND= None Detected The total mold spore counts in the following rooms/areas were below outdoor levels, and mold types detected were similar to those found outdoors.therefore, mold spores were not considered amplified the following rooms at the time of our visit: Front Office (Reception Desk), Conference Room A100, A101, A103, A104, E107, A108, E101, E102, E104, E105, E106, K101, K103, K104, K105, K106, K Workroom, P113, P111, P108, P106, P104, Media Center (desk), M102, M103, M101, P110, P112, P115, P117, P116, P120, I100, IC100, I101, I103, I102, I104, I105, I107, I106, I109, I108, I110, I112, I114, Portable 311, Portable 215, Portable 205, Portable 141, Portable 194, Portable 185, Portable 266, the Conference Room attached to the Reading Room, A113, the cafeteria, and the I Workroom. The total mold spore counts in the Rooms P107, P102, P105, P103, and A110 were above the average total counts in the outdoor samples, therefore mold spores are considered amplified in these five rooms., LLC! 18

19 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 The total mold spore counts in Rooms E100, K102, Portable 220, and I111 (Multipurpose) were below outdoors levels, however Aspergillus/Penicillium-like mold spores were detected in these rooms and not in the outdoor samples. Therefore, mold spores were considered amplified in Rooms E100, K103, Portable 220, and I111 (Multipurpose) on the day of our visit. The total mold spore counts in Rooms A106 and P109 were below outdoors levels, however and mold spores were detected at a very low level in these rooms and not in the outdoor samples. Therefore, mold spores were considered slightly amplified in Rooms A106 and P109 on the day of our visit. The total mold spore counts in Portable 197 were below outdoors levels, however mold spores were detected in this portable and not in the outdoor samples. Therefore, mold spores were considered slightly amplified in Portable 197 on the day of our visit. The total mold spore counts in Rooms A105, A107, A109, A111, the Reading Room, and Portable 286 were below outdoors levels, however and were detected in Room A105,, Myxomycete/Rust/Smut-like,, and were detected in Room A107,,, Myxomycete/Rust/Smut-like,,, and were detected in Room A109, Aspergillus/Penicillium-like,, Myxomycete/Rust/Smut-like,, and were detected in Room A111, Aspergillus/Penicillium-like,,, Myxomycete/Rust/Smut-like, and were detected in the Reading Room, and, Myxomycete/Rust/Smut-like, and mold spores were detected in Portable 286. None of these mold types were detected in the outdoor samples, therefore, mold spores were considered amplified in Rooms A105, A107, A109, A111, the Reading Room, and Portable 286 on the day of our visit. The total mold spore counts in M100 (Media Center - Nonfiction area), M104, P100, P118, and P114 were below outdoors levels, however mold spores were detected at higher counts in these rooms than in the outdoors samples. Therefore, mold spores were considered amplified in M100 (Media Center - Nonfiction area), M104, P100, P118, and P114 on the day of our visit., LLC! 19

20 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Table III: Mold Surface Sampling Results January 21, 2019 Sample Number Surface Location Relative Quantity Predominant Types S-1 S-2 Staining on HVAC Supply Diffuser Staining on HVAC Supply Diffuser Room E107 Light K Workroom Loaded S-3 Efflorescence on Wall Room P117 NA None Detected S-4 Staining on HVAC Supply Diffuser Portable 197 Light Trace Abundant Abundant Light Light Aspergillus/Penicillium-like Myxomycete/Rust/Smut-like S-5 Syracuse SoV Binder Room A111 Loaded Aspergillus/Penicillium-like Abbreviations: c/m 3 = total mold spore counts per cubic meter, LDL= less than detectable, = not applicable Relative scale reported by analytical laboratory: Trace 1 to 10 spores; Light spores; Abundant spores; Loaded>300 spores Surface mold sampling was performed by wiping a sterile swab across the staining on the HVAC supply diffusers in Room E107, the K Workroom, and Portable 197. The surface sample result had a light amount of mold spores from the staining on the HVAC supply diffuser in Room E107, was loaded with mold spores from the HVAC supply diffuser in the K Workroom, and contained varying amounts of, Aspergillus/ Penicillium-like,,, Myxomycete/Rust/Smut-like, and mold spores from the HVAC supply diffuser in Portable 197. Surface mold sampling was performed by wiping a sterile swab across the staining on the Syracuse soft binder in Room A111. The surface sample result was loaded with Aspergillus/ Penicillium-like mold spores. Surface mold sampling was performed by wiping a sterile swab across the efflorescence on the interior side of the exterior wall in Room P117. The surface sample result was negative for mold spores., LLC! 20

21 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Conclusions and Recommendations The results of the visual assessment and testing indicate the following: We observed mold on the HVAC supply diffusers in Room E107, the K Workroom, and Portable 197 and on a soft binder in Room A111. We did not detect musty odors in any of the areas visited at St. James Elementary School on the day of our visit. The results of the environmental parameter testing revealed that carbon dioxide was within normal limits in all 80 of the rooms/areas visited on January 21, Temperature was slightly below normal limits in the following rooms/areas: Front Office (Reception Desk), P111, P102, Portable 220, Portable 197, Portable 311, Portable 215, Portable 205, Portable 286, Portable 141, Portable 194, Portable 185, Portable 266, and A105. Temperature was within normal limits in all of the remaining rooms/areas visited. Relative humidity was below normal limits in the following rooms/areas: E107, E100, E101, E102, E104, E105, E106, K101, K102, K103, K104, K105, K106, the K Workroom, P105, M104, Portable 220, I111 (Multipurpose), Portable 197, Portable 311, Portable 215, Portable 205, Portable 286, Portable 141, Portable 194, Portable 185, Portable 266, A105, A107, A109, A110, A111, Reading Room, Conference Room (attached to Reading Room), Cafeteria, and the I Workroom. Relative humidity was within normal limits in all of the remaining rooms/areas visited. These conditions (lower relative humidity and lower temperatures) are not abnormal at this time of the year. We observed water stained ceiling tiles in the following rooms: Conference Room A100, A104, K103, K104, P107, M103, M104, P115, P120, IC100, I104, I109, I108, I110, and A110. We observed staining and/or dust build up on the HVAC supply diffusers in the following rooms: A103, E107, K105, K Workroom, P109, P107, I100, IC100, I101, I103, I102, I104, I107, I106, I109, I108, Portable 220, I110, I112, I111, Portable 197, Portable 311, Portable 215, Portable 286, Portable 141, Portable 194, Portable 185, A105, A107, A109, A110, I Workroom, and the Cafeteria. We observed dust accumulation on the HVAC return vents in the following rooms: A103, A104, P106, Portable 197, Portable 215, Portable 205, Portable 141, Portable 194, Portable 185, and A105. Efflorescence was observed on the interior side of the exterior concrete walls in Rooms P109, P115, P116, P117, and I104. The surface swabs collected from the staining on the HVAC supply diffusers in Room E107, the K Workroom, and Portable 197, as well as the staining on the binder in Room A111 were positive for mold spores. No spores were detected on the surface swab collected from the efflorescence on the interior side of the exterior concrete wall in Room P117. Mold spores were not amplified in the Front Office (Reception Desk), Conference Room A100, A101, A103, A104, E107, A108, E101, E102, E104, E105, E106, K101, K103, K104, K105, K106, K Workroom, P113, P111, P108, P106, P104, M100 (Media Center - desk area), M102, M103, M101, P110, P112, P115, P117, P116, P120, I100, IC100, I101, I103, I102, I104, I105, I107, I106, I109, I108, I110, I112, I114, Portable 311, Portable 215, Portable 205, Portable 141, Portable 194, Portable 185, Portable 266, the Conference Room attached to the Reading Room, A113, the cafeteria, or the I Workroom on January 21, Mold spores were amplified in Rooms P107, P102, P105, P103, A110, E100, K102, Portable 220, I111 (Multipurpose), A106, P109, Portable 197, A105, A107, A109, A111, the Reading Room, Portable 286, M100 (Media Center - Nonfiction area), M104, P100, P118, and P114 on the day of our visit., LLC! 21

22 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 The following recommendations are provided for the Conference Room A100, K103, K104, M103, and P120: 1. Determine if there is an active source of water intrusion causing the stained ceiling tiles and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tiles to prevent future mold growth. The following recommendations are provided for Room A103, Portable 141, Portable 194, and Portable 185: 1. Clean the HVAC return vents and supply diffusers with a District approved antimicrobial cleaning agent. The following recommendations are provided for Portable 215: 1. Clean the HVAC return vents and supply diffusers with a District approved antimicrobial cleaning agent. 2. Determine if there is an active leak causing the staining on the ceiling in Portable 215 and repair it. Once the repair has been made, or it is determined that it is not an active leak causing the staining, consider painting over the staining with an antimicrobial paint, such as Kilz. The following recommendations are provided for Room A104: 1. Determine if there is an active source of water intrusion causing the stained ceiling tile and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tile to prevent future mold growth. 2. Clean the HVAC return vent with a District approved antimicrobial cleaning agent. The following recommendations are provided for Room I104: 1. Determine if there is an active source of water intrusion causing the stained ceiling tile and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tile to prevent future mold growth. 2. Clean the HVAC supply diffusers with a District approved antimicrobial cleaning agent. 3. Due to the efflorescence on the wall, an engineer should evaluate and make recommendations for corrective actions necessary to prevent water intrusion and mold growth. Efflorescence on the wall indicates there either is a current issue with water intrusion or has been an issue. The following recommendations are provided for Room P115: 1. Determine if there is an active source of water intrusion causing the stained ceiling tiles and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tiles to prevent future mold growth. 2. Due to the efflorescence on the wall, an engineer should evaluate and make recommendations for corrective actions necessary to prevent water intrusion and mold growth. Efflorescence on the wall indicates there either is a current issue with water intrusion or has been an issue. The following recommendations are provided for Rooms I109, I108, and I110: 1. Determine if there is an active source of water intrusion causing the stained ceiling tiles and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tiles to prevent future mold growth., LLC! 22

23 Report :Horry y Schools (St. James Elementary) Project No January 29, Clean the HVAC supply diffusers with a District approved antimicrobial cleaning agent. The following recommendations are provided for Rooms E107, K105, K Workroom, I101, I102, I107, I106, Portable 311, and the I Workroom: 1. Clean the HVAC supply diffusers with a District approved antimicrobial cleaning agent. The following recommendations are provided for Rooms E101, E105, and I100: 1. Clean the HVAC supply diffusers and the metal brackets around the ceiling tiles with dust build up on them with a District approved antimicrobial cleaning agent. The following recommendations are provided for Room IC100: 1. Clean the HVAC supply diffuser and the metal brackets around the ceiling tiles with dust build up on them with a District approved antimicrobial cleaning agent. 2. Determine if there is an active source of water intrusion causing the stained ceiling tile and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tile to prevent future mold growth. The following recommendations are provided for Room P106: 1. Clean the HVAC return vent with a District approved antimicrobial cleaning agent. The following recommendations are provided for Portable 205: 1. Clean the HVAC return vent with a District approved antimicrobial cleaning agent. 2. Determine if there is an active leak causing the staining on the ceiling in Portable 205 and repair it. Once the repair has been made, or it is determined that it is not an active leak causing the staining, consider painting over the staining with an antimicrobial paint, such as Kilz. The following recommendations are provided for Room P116: 1. Clean the retractable screen with a District approved antimicrobial cleaning agent. 2. Due to the efflorescence on the wall, an engineer should evaluate and make recommendations for corrective actions necessary to prevent water intrusion and mold growth. Efflorescence on the wall indicates there either is a current issue with water intrusion or has been an issue. The following recommendations are provided for Room P117: 1. Due to the efflorescence on the wall, an engineer should evaluate and make recommendations for corrective actions necessary to prevent water intrusion and mold growth. Efflorescence on the wall indicates there either is a current issue with water intrusion or has been an issue. The following recommendations are provided for Rooms I112, I103, and the Cafeteria: 1. Clean the HVAC supply diffusers and walls with a District approved antimicrobial cleaning agent. In the cafeteria, also clean the concrete block columns in the center of area., LLC! 23

24 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 The following recommendations are provided for Rooms A106, E100, K102, P109, P107, Media Center (M100), M104, P100, P118, P114, Portable 220, I111, Portable 197, Portable 286, A105, A107, A109, A110, A111, and the Reading Room: 1. Where applicable (Rooms P107, M104, A110), determine if there is an active source of water intrusion causing the stained ceiling tiles and repair it. If the source has already been repaired or after it is repaired, remove and replace the stained ceiling tiles to prevent future mold growth. 2. Thoroughly clean and dry all of the surfaces (walls, floors, furniture, doors, shelves, desks, chairs, etc) in these rooms with a District approved antimicrobial cleaning agent. This should include a cleaning of any HVAC supply diffusers and return vents. This may be performed by the regular cleaning staff as long as appropriate antimicrobial cleaning agents are used for the cleaning. This must also include a thorough cleaning and drying of the carpet in Rooms A106, P100, A105, A107, A110, A111 and the area rugs in Rooms E100, K102, P109, P107, P118, P114, Portable 197, Portable 286, the Media Center, and the Reading Room. Prior to cleaning Room A111, dispose of the soft Syracuse binder. In Room P109, an engineer should evaluate and make recommendations for corrective actions necessary to prevent water intrusion and mold growth. Efflorescence on the wall indicates there either is a current issue with water intrusion or has been an issue. 3. Once the cleaning has been completed, replace the HVAC filters. 4. HEPA scrubbers may be used in these rooms as their use would more quickly reduce the spore counts, however, their use is not required. 5. Follow up air testing can be performed if requested. The following recommendations are provided for Rooms P102, P105, and P103: 1. Thoroughly clean and dry all of the surfaces (walls, floors, furniture, doors, shelves, desks, chairs, etc) in these rooms with a District approved antimicrobial cleaning agent. This should include a cleaning of any HVAC supply diffusers and return vents. Any porous items in the rooms (such as upholstered chairs, curtains, pillows, cushions, etc.) may be vacuumed using a HEPA vacuum or professionally cleaned. This may be performed by the regular cleaning staff as long as appropriate antimicrobial cleaning agents are used for the cleaning, otherwise a mold remediation company may perform the work. The area rugs in Rooms P102 and P103 should be professionally cleaned and dried. 2. We recommend running one HEPA scrubber in each of these rooms for a period of 2-3 days and up until follow up air testing is performed. 3. Once the cleaning has been completed, replace the HVAC filters. 4. Follow up air testing is recommended for these rooms., LLC! 24

25 Report :Horry y Schools (St. James Elementary) Project No January 29, 2019 Appendix I Analytical Results, LLC! 25

26 _STA Lab M-1 _STA_001 Outdoors M-2 _STA_002 Outdoors M-85 _STA_003 Outdoors % % % % % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 1 of 29

27 _STA Lab M-86 _STA_004 Outdoors M-3 _STA_005 Front office reception desk M-4 _STA_006 A100 Conference room % % % % % % % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 2 of 29

28 _STA Lab M-5 _STA_007 A101 Principal's office M-6 _STA_008 A103 Bookkeeper M-7 _STA_009 A106 Attendance % % % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 3 of 29

29 _STA Lab M-8 _STA_010 A104 Secretary M-9 _STA_011 E107 M-10 _STA_012 A % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 4 of 29

30 _STA Lab M-11 _STA_013 E100 M-12 _STA_014 E101 M-13 _STA_015 E % % % % % % No Spores Detected < % Skin Cell % of Debris Debris in Background % % <1 <.4 AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 5 of 29

31 _STA Lab M-14 _STA_016 E104 M-15 _STA_017 E105 M-16 _STA_018 E106 No Spores Detected No Spores Detected % % < % Skin Cell % of Debris Debris in Background <1 <.4 <1 < % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 6 of 29

32 _STA Lab M-17 _STA_019 K101 M-18 _STA_020 K102 M-19 _STA_021 K % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 7 of 29

33 _STA Lab M-20 _STA_022 K104 M-21 _STA_023 K105 M-22 _STA_024 K106 No Spores Detected % No Spores Detected < % Skin Cell % of Debris Debris in Background <1 < % <1 <.4 AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 8 of 29

34 _STA Lab M-23 _STA_025 K Workroom M-24 _STA_026 P113 M-25 _STA_027 P % No Spores Detected No Spores Detected < % Skin Cell % of Debris Debris in Background % <1 <.4 <1 <.4 AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 9 of 29

35 _STA Lab M-26 _STA_028 P108 M-27 _STA_029 P109 M-28 _STA_030 P % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 10 of 29

36 _STA Lab M-29 _STA_031 P104 M-30 _STA_032 P107 M-31 _STA_033 P102 No Spores Detected % % % % % % % % < % Skin Cell % of Debris Debris in Background <1 < % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 11 of 29

37 _STA Lab M-32 _STA_034 P105 M-33 _STA_035 P103 M-34 _STA_036 M100 Media ctr. nonfiction % % % >300 > %** % % % % % % % % % < % Skin Cell % of Debris Debris in Background >491 > % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 12 of 29

38 _STA Lab M-35 _STA_037 M100 Media ctr. desk M-36 _STA_038 M102 Media office M-37 _STA_039 M103 Studio No Spores Detected % % < % Skin Cell % of Debris Debris in Background <1 < % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 13 of 29

39 _STA Lab M-38 _STA_040 M104 Literary resource M-39 _STA_041 M101 ISS M-40 _STA_042 P100 Assistant principal % % % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 14 of 29

40 _STA Lab M-41 _STA_043 P110 M-42 _STA_044 P112 M-43 _STA_045 P % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 15 of 29

41 _STA Lab M-44 _STA_046 P117 M-45 _STA_047 P118 M-46 _STA_048 P % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 16 of 29

42 _STA Lab M-47 _STA_049 P116 M-48 _STA_050 P120 M-49 _STA_051 I % % No Spores Detected % % % % < % Skin Cell % of Debris Debris in Background % <1 < % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 17 of 29

43 _STA Lab M-50 _STA_052 IC 100 M-51 _STA_053 I 101 M-52 _STA_054 I % % No Spores Detected % < % Skin Cell % of Debris Debris in Background % <1 < % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 18 of 29

44 _STA Lab M-53 _STA_055 I 102 M-54 _STA_056 I 104 M-55 _STA_057 I 105 No Spores Detected No Spores Detected % % % < % Skin Cell % of Debris Debris in Background <1 <.4 <1 < % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 19 of 29

45 _STA Lab M-56 _STA_058 I 107 M-57 _STA_059 I 106 M-58 _STA_060 I 109 No Spores Detected % % % % % % < % Skin Cell % of Debris Debris in Background <1 < % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 20 of 29

46 _STA Lab M-59 _STA_061 I 108 M-60 _STA_062 Portable 220 M-61 _STA_063 I 110 No Spores Detected % % No Spores Detected < % Skin Cell % of Debris Debris in Background <1 < % <1 <.4 AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 21 of 29

47 _STA Lab M-62 _STA_064 I 112 M-63 _STA_065 I 111 multi purpose M-64 _STA_066 I 114 office No Spores Detected % % No Spores Detected < % Skin Cell % of Debris Debris in Background <1 < % <1 <.4 AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 22 of 29

48 _STA Lab M-65 _STA_067 Portable 197 M-66 _STA_068 Portable 311 M-67 _STA_069 Portable % % % No Spores Detected No Spores Detected < % Skin Cell % of Debris Debris in Background % <1 <.4 <1 < AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 23 of 29

49 _STA Lab M-68 _STA_070 Portable 205 M-69 _STA_071 Portable 286 M-70 _STA_072 Portable 141 No Spores Detected % % % % % % % < % Skin Cell % of Debris Debris in Background <1 < % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 24 of 29

50 _STA Lab M-71 _STA_073 Portable 194 M-72 _STA_074 Portable 185 M-73 _STA_0 Portable 266 No Spores Detected No Spores Detected % % % % < % Skin Cell % of Debris Debris in Background <1 <.4 <1 < % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 25 of 29

51 _STA Lab M-74 _STA_076 A 105 M- _STA_077 A 107 M-76 _STA_0 A % % % % % % % % % % % % % % % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 26 of 29

52 _STA Lab M-77 _STA_079 A 110 M- _STA_080 A 111 M-79 _STA_081 Reading room % % % % % % % % % % % % % % % % % % % % % % % % < % Skin Cell % of Debris Debris in Background % % % % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 27 of 29

53 _STA Lab M-80 _STA_082 Conference room M-81 _STA_083 A 113 M-82 _STA_084 Cafeteria stage side No Spores Detected % % % < % Skin Cell % of Debris Debris in Background <1 < % % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 28 of 29

54 _STA Lab M-83 _STA_085 Cafeteria M-84 _STA_086 I workroom No Spores Detected % < % Skin Cell % of Debris Debris in Background <1 < % AIHA EMPAT program for fungi. EMPAT Laboratory ID: Reporting Limit equals. Page 29 of 29

55 Direct Exam: Swab Analysis SAI Method B-SOP-005 Suite F, #163 Lab ID: Received: 1/23/2019 Project ID: Reported: 1/24/2019 S-1 S-2 S-3 S-4 S-5 Sample E107 suply vnt Kwkrm sply vnt P117 wall corner Port197 supl vnt A111 syrac bind : 1=Trace (1-10 spores); 2=Light ( spores); 3=Abundant ( spores) 4=Loaded (>300 spores) N 2 Aspergillus O Aspergillus/Penicillium-like 1 4 S 3 Chaetomium P 2 4 O 3 R E S Myxomycete/Rust/Smut-like 2 D Penicillium E T 2 Scopulariopsis E C Stachybotrys T Stemphylium E Tetraploa D Torula Ulocladium Page 1 of 1 Fruiting bodies Hyphal fragments Debris COMMENT: Microbiology Technical Manager B-F-015 EXP: 3/1/2020 Unless otherwise noted blank sample correction was not performed on analytical results. Scientific Analytical Institute participates in the AIHA EMPAT program for fungi. EMPAT Laboratory ID: This report relates only to the samples tested and may not be reproduced, except in full, without the written approval of SAI. Reporting Limit equals the.