MOLD SCREENING REPORT

Transcription

1 MOLD SCREENING REPORT Mount Washington Middle School 269 Water Street Mt. Washington, KY Project # BCBOE PO# Prepared for: Mr. Mark Mitchell Director, Buildings and Grounds Bullitt County Board of Education 1040 HWY 44 East Shepherdsville, KY Prepared By: Douglas W. Peters, CIH, CSP Report Date: April 27, 2015

2 Section 1 General: MOLD SCREENING REPORT Subject: Mold Screening Report Date: 4/22/2015 Time: 3:00 PM Location: 269 Water Street, Mt. Washington, KY Inspection Contact: Mark Mitchell (Director of Facilities) Inspector: Tony Ritenour, CMI (Council-certified Microbial Investigator) Inspector s Company Address: 3701 Taylorsville Road, Suite 1 Section 2 Method: A visual inspection of a classroom 307 complaint area was completed based on the Indoor Environmental Standards Organization, Standards of Practice for the Assessment of Indoor Environmental Quality. One air sample was collected in a complaint area, one in a noncomplaint area, and one outdoor control sample. (note: This was not a full building indoor air quality survey). Air sample medium: Micro 5 spore trap cassettes Surface sample medium: Mold Tape Slide TM

3 Section 3 Findings: Surface mold was detected as follows: Location and list of all spore types detected on sample: Room 307 (HVAC coil fins): None Detected Room 307 (Drywall wall): Stachybotrys Room 307 (Carpet): None Detected Amplified indoor mold spore counts detected as follows: location and list of amplified spore types detected on sample. Amplification means higher than outdoor baseline or background levels (1-6 spores); unless inspector/analyst renders opinion to the contrary. Room 307 (complaint room): No amplified spore levels Room 304 (non-complaint room): No amplified spore levels Section 4 Discussion: This scope of work included the inspection of only one complaint room, room 307. This room has been reportedly experiencing a chronic roof leak. The perimeter drywall wall in this room exhibited water damage and many water stains. The wall was still damp in many areas. The last rain event was reportedly over 48 hours prior to the inspection. A room inspection with a thermal imaging camera (Testo 865) revealed what appeared to be a crack in the cinderblock wall beneath the window closest to the HVAC closet. This is allowing cool air to seep in and may be a point of water intrusion. The thermal camera also indicated high levels of moisture in the drywall walls along the window wall.

4 Mold growth was observed and tested on the affected walls. Possible mold was tested on the HVAC coil fins and carpet. Sample results did not indicate the HVAC coil fins and carpet had mold growth. The stained ceiling tiles did not appear to contain suspect mold growth, only water staining. An odor was evident upon entering the complaint room 307. No odor was noticed upon entering the non-complaint room 304. The HVAC MERV-8 filters appear to have been recently changed and were in acceptable condition. Section 5 Conclusions/Recommendations: It is recommended that roof, roof drainage, and roof coping caps undergo a proper inspection/repairs and the exterior wall and window sills be inspected for cracks, missing mortar, or other defects and repaired as necessary. Following the source correction, the below recommendations are made Since room 307 has undergone chronic water intrusion along the drywall window wall. It is recommended that all 130 SF of drywall and insulation on the window wall be removed. Following drywall removal, all remaining surfaces in the open affected void should be scrubbed clean and a microbial inhibiting agent applied. The front wall of room 307 that intersects the window wall has been affected at the corner. It is recommended that, at a minimum, the affected drywall be removed at least 1 linear foot from the corner and the full height to the ceiling (approximately 12 high). Regardless, EHM recommends removing the drywall at least 1 linear foot beyond any visual mold growth. (approximately 20 SF total affected on front wall). Based on the air sample results, the mold on the walls has not adversely impacted the mold levels in the air.

5 Section 6 References: 1 - The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) has determined that acceptable ranges of temperature and relative humidity for the summer and winter are: Relative Humidity Winter Temperature Summer Temperature 30 % 69.0 o F o F 76.0 o F o F 60 % 68.0 o F o F 74.0 o F o F These standards apply for persons clothed in typical summer and winter clothing, at light, mainly sedentary activity. Source: Adapted from the ANSI/ASHRAE Standard , Thermal Environmental Conditions forhuman Occupancy. 2 - ANSI/ASHRAE Standard , Ventilation for Acceptable Indoor Air Quality, suggests that carbon dioxide levels be maintained at or below 700 ppm above the outside level to keep bioeffluents (body odor) within an acceptable level. The OSHA Permissible Exposure Limit for carbon dioxide is 5000 ppm Threshold Limit Value (TLV) of the American Conference of Governmental Industrial Hygienists for carbon monoxide is 25 ppm. The OSHA Permissible Exposure Limit for carbon monoxide is 50 ppm. 4 - Investigating Fungal Contamination in Buildings, EMLab P & K, 2003, states that in general, indoor concentrations of fungi and bacteria should be lower than outdoor levels. 5 - In the OSHA Technical Manual, OSHA considers indoor surface samples of 1,000,000 CFU/in 2 or indoor air sample results of 1,000 CFU/m 3 as an indication of contamination. OSHA Technical Manual, Chapter 2.

6 Limitations The information contained in this report has been obtained through conversations, sampling and survey. The evaluation, conclusions and recommendations of this report are based solely upon the conditions present at the facility during the sampling period. Although great care has been taken by Douglas W. Peters and Associates, Inc., d.b.a. in compiling and checking the information contained in this report to ensure that it is current and accurate, Douglas W. Peters and Associates, Inc., d.b.a. disclaims any and all liability for any errors, omissions or inaccuracies in such information and data, whether attributable to inadvertence or otherwise, and for any consequence arising therefrom. The data provided hereunder neither purports to be nor constitutes legal or medical advice. Douglas W. Peters and Associates, Inc., d.b.a. shall not be liable for any special, consequential or exemplary damages resulting, in whole or in part, from customer s use of the data. Liability on the part of the Douglas W. Peters and Associates, Inc., d.b.a. is limited to the monetary value paid for this report. Respectfully, Douglas W. Peters, CIH, CSP Certified Industrial Hygienist / Project Manager

7 Tables Attachment 1

8 Table 1. Summary of Results of Microscopic Analysis of Air and Tape Samples 269 Water Street, Mt. Washington, KY April 22, 2015 Room/Area Description Sample Number SURFACE SAMPLES Results Spore Density or Concentration/Predominant Genus None Observed No Fungal Structures Detected Room 307, HVAC Coil Fins TP-001 Room 307, Drywall Wall TP-002 High Stachybotrys Room 307, Carpet TP-003 None Observed No Fungal Structures Detected Room/Area Description Room 307 (Complaint Area) Room 304 (Non-Complaint Area) Outdoors (Front of Building) MICRO 5 CASSETTE AIR SAMPLES Sample Number Results Spore Density or Concentration/Predominant Genus MC spores/m3 Cladosporium (200) MC spores/m3 Cladosporium (200) Nigrospora (80) MC spores/m3 Cladosporium (600) Quality Control Blank MC5-004 No Trace No Fungal Structures Detected * Bold Genus represents fungal levels at an elevated level when compared to the outdoor sample.

9 Tables 2 & 3. Summary of Results of Air Parameter Readings 269 Water Street, Mt. Washington, KY April 22, 2015 Location Room 307 (Complaint Area) Room 304 (Non-Complaint Area) Temperature (deg F) Humidity (rh%) CO 2 (ppm) CO (ppm) Outdoors (Front of Building) * Bold number indicates readings that are outside the ASHRAE recommended guidelines. EHM used direct reading instrumentation to measure airborne particle concentrations for 6 differing size criteria. Listed in the table below are the readings collected on-site: Location Particulate Concentrations* 0.3 um 0.5 um 1.0 um 2.5 um 5.0 um 10.0 um Room 307 (Complaint Area) Room 304 (Non-Complaint Area) Outdoors (Front of Building) * um = means particle size in microns (1000 microns = 1 millimeter). ** Bold number indicates elevated levels of particles when compared to the outdoor readings. Though the particulate levels between 0.5 um and 5 um were elevated when compared to outdoors, it is important to note that there was high foot traffic in these classrooms as school had released students just prior to this inspection. This may be the source of the higher particle levels. The elevated carbon dioxide levels are normally related to high concentration of personnel versus a lack of fresh air.

10 Laboratory Report Attachment 2

11 OrderID: Page 1 Of 1

12 EMSL Analytical, Inc East 52nd St. Indianapolis, IN Phone/Fax: (317) / (317) / indianapolislab@emsl.com Order ID: Customer ID: Customer PO: Project ID: ENMG Attn: Proj: Joe Christy 3701 Taylorsville Road Suite 1 BCBOE Mt Washington MS Phone: (502) Fax: (502) Collected: 04/22/2015 Received: 04/23/2015 Analyzed: 04/23/2015 Test Report: Microscopic Examination of Fungal Spores, Fungal Structures, Hyphae, and Other Particulates from Tape Samples (EMSL Method: M041) Lab Sample Number Client Sample ID Location Fungal Identification Category TP-001 Rm 307 HVAC Coil Fins Fibrous Particulate High TP-002 Rm 307 Drywall Fibrous Particulate Low Hyphal Fragment Stachybotrys TP-003 Rm 307 Carpet Fibrous Particulate High No discernable field blank was submitted with this group of samples. High *High* Bipolaris++ = Bipolaris/Dreschlera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut * = Sample contains fruiting structures and/or hyphae associated with the spores. Category Rare Low Medium High Count/area Analyzed 1 to to to 1000 > 1000 Andrea Brooke, Microbiology Lab Manager or Other Approved Signatory EMSL maintains liability limited to cost of analysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation of the data contained in this report is the responsibility of the client. "-" denotes not detected. Samples received in good condition unless otherwise noted. AIHA-LAP, LLC--EMLAP Accredited # Initial report from: 04/23/ :11:10 For Information on the fungi listed in this report please visit the Resources section at Test Report DEVER Printed: 4/23/ :11:10PM Page 1 of 1

13 EMSL Analytical, Inc East 52nd St. Indianapolis, IN Phone/Fax: (317) / (317) / indianapolislab@emsl.com Order ID: Customer ID: Customer PO: Project ID: ENMG Attn: Proj: Joe Christy 3701 Taylorsville Road Suite 1 BCBOE Mt Washington MS Phone: (502) Fax: (502) Collected: 04/22/2015 Received: 04/23/2015 Analyzed: 04/23/2015 Test Report: Micro-5( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MC Rm MC Rm MC O/S Front Spore Types Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores Zygomycetes Nigrospora Total Fungi Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 40* * * - Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut Andrea Brooke, Microbiology Lab Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Indianapolis, IN AIHA-LAP, LLC--EMLAP Initial report from: 04/23/ :11:10 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 4/23/ :11:10PM Page 1 of 2

14 EMSL Analytical, Inc East 52nd St. Indianapolis, IN Phone/Fax: (317) / (317) / indianapolislab@emsl.com Order ID: Customer ID: Customer PO: Project ID: ENMG Attn: Proj: Joe Christy 3701 Taylorsville Road Suite 1 BCBOE Mt Washington MS Phone: (502) Fax: (502) Collected: 04/22/2015 Received: 04/23/2015 Analyzed: 04/23/2015 Test Report: Micro-5( ) Analysis of Fungal Spores & Particulates by Optical Microscopy (Methods EMSL 05-TP-003, ASTM D7391) Lab Sample Number: Client Sample ID: Volume (L): Sample Location: MC Blank Dummy Dummy Dummy Dummy Dummy Dummy Spore Types Raw Count Count/m³ % of Total Alternaria Ascospores Aspergillus/Penicillium Basidiospores Bipolaris Chaetomium Cladosporium Curvularia Epicoccum Fusarium Ganoderma Myxomycetes Pithomyces Rust Scopulariopsis Stachybotrys Torula Ulocladium Unidentifiable Spores Zygomycetes Nigrospora Total Fungi - No Trace Hyphal Fragment Insect Fragment Pollen Analyt. Sensitivity 600x Analyt. Sensitivity 300x - 0* Skin Fragments (1-4) Fibrous Particulate (1-4) Background (1-5) Bipolaris++ = Bipolaris/Drechslera/Exserohilum Myxomycetes++ = Myxomycetes/Periconia/Smut Andrea Brooke, Microbiology Lab Manager or Other Approved Signatory High levels of background particulate can obscure spores and other particulates leading to underestimation. Background levels of 5 indicate an overloading of background particulates, prohibiting accurate detection and quantification. Present = Spores detected on overloaded samples. Results are not blank corrected unless othewise noted. The detection limit is equal to one fungal spore, structure, pollen, fiber particle or insect fragment. "*" Denotes particles found at 300X. *-* denotes not detected. EMSL maintains liability limited to cost of anaysis. This report relates only to the samples reported above and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. Samples received in good condition unless otherwise noted. Samples analyzed by EMSL Analytical, Inc. Indianapolis, IN AIHA-LAP, LLC--EMLAP Initial report from: 04/23/ :11:10 For Information on the fungi listed in this report please visit the Resources section at Test Report SPVER Printed: 4/23/ :11:10PM Page 2 of 2

15 Floor Plan Attachment 3

16 Mt. Washington Middle School Third Floor TP-001 TP-003 MC5-002 MC5-001 MC5-003 TP-002 Legend Mold Air Sample Location Mold Surface Sample Location Affected Drywall Location N

17 Photographs Attachment 4

18 Rm 307. Damp drywall above window nearest the HVAC Closet. Rm 307. Crack in wall providing cool air infiltration and possible water intrusion.

19 Mold growth on drywall window wall. Mold growth along front drywall wall.