05112015 ohc building 46 iaq report final - may 2015 a

INDOOR AIR QUALITY ASSESSMENT

PERFORMED AT

BUILDING 46, ROOF ASSEMBLY AND LIGHTNING PROTECTION

BAY PINES REGIONAL VA 9500 BAY PINES BLVD. ST. PETERSBURG, FL

PREPARED FOR

ESASOUTH,INC.

2727BNW43RDST.SUITE7CGAINESVILLE, FL 32606

PREPARED BY

5420 Bay Center Drive, Suite 100 Tampa, Florida 33609 Phone: (813) 626-8156

OHC PROJECT NO.: 150074-IA

PREPARED ON

May 7, 2015

OHCENVIRONMENTALENGINEERING,INC.5420BAYCENTERDRIVE,SUITE100,TAMPA,FLORIDA33609

PHONE:(813)6268156FAX:(813)6236702WEBSITE:WWW.OHCNET.COM

May 7, 2015 Mr. Philip Burke Senior Project Manager ESA South, Inc. 2727B NW 43rd. Suite 7C Gainesville, FL 32606 Re: Indoor Air Quality Assessment Roof Assembly and Lighting Protection Project Bay Pines VA Regional Building 46 OHC Project No. 150074-IA Dear Mr. Burke, OHC Environmental Engineering Inc. (OHC) is pleased to present the report for the Indoor Air Quality Assessment conducted on April, 29 2015. These services took place at Building 46 located at Bay Pines VA Medical Center. The assessment was limited in scope to indoor air quality concerns regarding the Roof Assembly and Lighting Protection project. If we can be of further assistance, please contact us at your convenience. Sincerely, Report Prepared by:

James F. Rizk, CIH

BAYPINESREGIONALVABUILDING46

ROOFASEMBLYANDLIGHTINGPROJECTINDOORAIRQUALITYASSESSMENT

OHCPROJECTNO.:150074IA

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TABLE OF CONTENTS

1.0 INTRODUCTION..............................................................................................................2 1.1 Executive Summary .................................................................................................2 2.0 OBSERVATIONS AND ASSESSMENTS ......................................................................2 2.1 Visual Observations & Moisture .............................................................................3

2.2 Biological Surface Samples .....................................................................................4 2.3 Environmental Conditions .......................................................................................6

3.0 RECOMMENDATIONS ...................................................................................................7 4.0 METHODS .......................................................................................................................10 4.1 Thermal Comfort ...................................................................................................10 4.2 Biological Air Samples ..........................................................................................10

4.4 Moisture Measurements .........................................................................................10 APPENDIX I LABORATORY ANALYTICAL RESULTS APPENDIX II SITE PHOTOGRAPHS APPENDIX III IR PHOTOGRAPHS APPENDIX IV MOISTURE LOCATION MAP APPENDIX V CONSULTANT CREDENTIALS




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1.0 INTRODUCTION

OHC Environmental Engineering, Inc., (OHC), was contracted by Mr. Phillip Burke with ESA South, Inc., to perform an indoor air quality assessment at the Bay Pines VA Medical Center, Building 46, located at 9500 Bay Pines Blvd. in St. Petersburg, Florida. The purpose of this assessment was limited in scope to indoor air quality concerns regarding the Roof Assembly and Lighting Protection project, partial third floor only. Representatives from OHC Environmental Engineering Inc., Mr. James F. Rizk, CIH, Florida Licensed Mold Assessor and Mr. Eric S. Mauritz, CIE, Florida Licensed Mold Assessor, visited the area of Building 46 on April 28 and 29, 2015 to evaluate the area environment for sources of indoor air quality contamination. 1.1 Executive Summary

Mr. Rizk and Mr. Mauritz performed a visual assessment within the area of concern within building 46 in order to determine sources of potential indoor air quality contamination. They also collected surface samples for biological agents and collected comfort parameter testing which included: temperature, relative humidity, Carbon Dioxide and Carbon Monoxide. Based on the assessment water is believed to be infiltrating the area via the sky light affecting all walls along the sky light. There is also evidence of water infiltrating from along the exterior walls most likely from the roof or parapet wall. Due to the extent of water damage and Visible Presumptive Fungal Growth (VPFG) remediation is highly recommended. (Please refer to section 2.0 observations and assessments and section 3.0 recommendations).

Comfort parameter samples collected for temperature, relative humidity and carbon monoxide were all within ASHERA recommended levels. These samples were collected with minimum occupancy in the area so conditions may change significantly once the area is fully occupied. An Asbestos survey is required prior to any remediation or disturbance of any building material. It is my understanding that the VA hospital has an Asbestos survey of this facility.

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2.0 OBSERVATIONS AND ASSESSMENTS 2.1 Visual Observations

A visual inspection was completed on the on April 28 and 29, 2015. The findings of the visual inspection indicated the following findings:

North Skylight Wall:

Along North Wall (skylight wall): Water damage and deterioration located on drywall ceiling which

encompasses structural beam Heavy rust and wet fire proofing associated with column *fire proofing =

100% moisture content Bottom inch of drywall is wet around columns *drywall lower one inch =

100% moisture content In the section that is covered with wallpaper; there is heavy Visible

Presumptive Fungal Growth (VPFG) on the drywall behind the wallpaper Northeast Corner:

Water damage and deterioration located on drywall ceiling which encompasses structural beam

Light Visible Presumptive Fungal Growth (VPFG) located behind vinyl base molding below corner of the windows

North Room (facing sky light): Heavy water damage and deterioration located on drywall ceiling which

encompasses structural beam Heavy rust located on the structural beam near the ceiling There is Visible Presumptive Fungal Growth (VPFG) located on the back

side of the drywall which encompasses the structural beam near the ceiling Water staining located on top of blinds Water staining located on 2X4 fissured ceiling tiles

West Exterior Wall:

Along West Wall (exterior wall): Rust is present on the metal corner strips associated with the vertical

columns Water staining located on the window sills Visible Presumptive Fungal Growth (VPFG) located behind vinyl base

molding and located on the drywall behind the vinyl cover associated with the columns




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West Wall near Southwest Column:

Water damage and deterioration located on drywall ceiling which encompasses structural beam

Water damage and deterioration (cracking) to the drywall walls between windows *drywall = 100% moisture content

South Exterior Wall: Southwest Column:

Signs of rodent/animal activity located around the column below the raised flooring

Southeast Column:

Heavy water damage and deterioration to the window sill. Water staining located on the 2x4 fissured ceiling tile Water damage to the drywall wall Visible Presumptive Fungal Growth (VPFG) located on the window sill

and on the drywall column below the raised flooring East Exterior Wall:

East Exterior Wall: Light Water damage to drywall ceiling which encompasses the structural

beam Central Chase:

Central Chase: Heavy rust located on the metal corner strips associated with the chase

2.2 Biological Samples

Surface Samples:

A total of three (3) biological surface samples were collected from the following areas: Sample number one (1) was collected from within the North room, on the backside of the water damaged drywall, which encompasses the structural ceiling beam. Sample number two (2) was collected from the North wall, behind the vinyl wall paper. Sample number three (3) was collected from the North wall in the Northeast corner, behind the base molding, below the corner window. Sample number one (1) yielded a Medium concentration of Aspergillus/Penicillium species, Cladosporium Species, a high concentration of Stachybotrys and Memnoniella and a Low concentration of Curvularia. Sample number two (2) yielded a high concentrations of Aspergillus/Penicillium and a high count of




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Chaetomium. Sample number three (3) yielded a high concentration of Chaetomium and a Low concentration of Aspergillus/Penicllium.

*LOW = Indicates Possible growth, or prolonged exposure to ubiquitous mold *MEDIUM = Indicates growth and some limited contamination may exist *HIGH= Indicates growth, coloniztaions and contamination. *RARE =1- 10 *LOW = 11 - 100 *MEDIUM = 101-1000 *HIGH= >1000 * Please Refer to Appendix I for laboratory reports. Cladosporium is a genus of fungi including some of the most common indoor and outdoor molds. The many species of Cladosporium are commonly found on living and dead plant material. Some species are plant pathogens, others parasitize other fungi. Cladosporium spores are wind-dispersed and they are often extremely abundant in outdoor air. Indoors Cladosporium species may grow on surfaces when moisture is present. Cladosporium species are rarely pathogenic to humans, but have been reported to cause infections of the skin and toenails, as well as sinusitis and pulmonary infections. If left untreated, these infections could turn into respiratory infections like pneumonia. The airborne spores of Cladosporium species are significant allergens, and in large amounts they can severely affect asthmatics and people with respiratory diseases. Cladosporium species produce no major mycotoxins of concern, but do produce volatile organic compounds (VOCs) associated with odors. Aspergillus - This genus of fungi includes over 185 species. Members of this genus are known as organisms that cause deterioration of materials. Among all filamentous fungi, Aspergillus is the most commonly isolated in invasive and opportunistic infections. Aspergillosis is the group of diseases caused by Aspergillus. The most common subtype among paranasal sinus infections associated with aspergillosis is A. fumigatus. The symptoms include fever, cough, chest pain, or breathlessness, which also occur in many other illnesses, so diagnosis can be difficult. Usually, only patients with already weakened immune systems or who suffer other lung conditions are susceptible. Penicillium is a very large group of fungi. They are commonly found in the soil, air and on living vegetation. Some species are able to produce mycotoxins(1). Curvularia sp. most species are pathogens of soil, plants, and cereal plants and is found mostly in tropical or subtropical regions. It is commonly found on paper and wood products. As well as being a contaminant, Curvularia may cause infections in both humans and animals. It is reported to be an allergen causing Type I allergies (i.e. asthma, hay fever) and is a relatively common cause of allergic fungal sinusitis.

1Boss,MarthaJ.andDay,DennisW.2003,BiologicalRiskEngineeringHandbook.LewisPublishersWashington,D.C.




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Stachybotrys sp.typically will grow on high cellulose building materials (i.e. drywall, gypsum board, paper, dust and fiber board that have been exposed to excessive moisture content (i.e. humidity, leaks, water infiltration and condensation) Constant moisture is required for its growth. Stachybotrys may produece trichothecene mycotoxins known as satratoxins, and these toxins may lead to pathological changes in animal and human tissues, which could result in serious health effects.

2.3 Environmental Conditions

Dry bulb temperature (Tdb) and relative humidity (RH) measurements were collected on April 29, 2015. Interior average temperature averaged 70.6F and average Interior RH was 53.2%. American Society of Heating, Refrigerating, and Air-conditioning Engineers, Inc. (ASHRAE) 55 criteria for thermal comfort were met based for temperature and relative humidity on the day of the survey. Observed environmental conditions are summarized in Table 1 below.

TABLE 1: ENVIRONMENTAL CONDITIONS BUIILDING 46 APRIL 29, 2015

LOCATION NAME ENVIRONMENTAL TEST RESULTS

CARBON DIOXIDE CO2

(ppm) DRY BULB

TEMPERATURE (F)

RELATIVE HUMIDITY

(%)Room 108 807 70.6 53.2




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3.0 RECOMMENDATIONS Based on the findings of the air quality assessment remediation is highly recommended. OHC recommends the following to be performed within containment, under negative air pressure, with critical barriers sealed, utilizing HEPA vacuums, wet wipe or other approved methods for cleaning, followed by dehumidification and/or drying. Prior to build back the remediated areas should be inspected by a Florida Licensed Mold Assessor. Any leaks associated with the roof or skylight should be identified and repaired prior to build back or it is likely that any issues will be re-occurring. If deemed more cost effective full sheets of drywall may be removed instead of localized removal.

North Wall:

Due to the extent of water damage and Visible Presumptive Fungal Growth (VPFG) found; all dry wall along the north wall (skylight wall) should be removed floor to ceiling spanning the length of the wall. This includes any associated spray-on fire proofing as well as any other type of insulation. The drywall ceiling should also be removed starting at the north wall extending toward the south wall three (3) feet along the north wall (skylight wall) spanning the length of the wall. Should any additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards.

North Room, North Wall (skylight wall):

Due to the extent of water damage and Visible Presumptive Fungal Growth (VPFG)

detected; all dry wall along the north wall (skylight wall) should be removed floor to ceiling spanning the length of the wall. This includes any associated spray-on fire proofing as well as any other type of insulation. The drywall ceiling should also be removed starting at the north wall extending toward the south wall three (3) feet along the north wall (skylight wall) spanning the length of the wall. Any water damaged ceiling tiles should be removed and disposed of. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards.




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West Exterior Wall:

Columns: All vinyl wall coverings and drywall should be removed from all existing columns floor to ceiling. This includes any associated spray-on fire proofing as well as any other type of insulation. The drywall ceiling should be removed two (2) feet from the edge of all columns radiating out in all directions. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

Windows: Drywall and any associated insulation should be removed two (2) feet around all windows. Wall cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

Along west wall: All remaining vinyl base molding should be removed spanning the

length of the wall. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

Near Southwest Column: Between the windows located below the water damaged ceiling, drywall and any associated insulation should be removed from floor to ceiling. The drywall ceiling should be removed two (2) feet starting at the edge of water damage extending out in all directions. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

South Exterior Wall: Southwest column: The vinyl wall covering and drywall should be removed from the

column floor to ceiling. This includes any associated spray-on fire proofing as well as any other type of insulation. The drywall ceiling should be removed two (2) feet from the edge of all columns radiating out in all directions. Wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area. *Signs of animal activity were noted and precautions should be utilized upon removal of drywall.

Southeast corner: drywall should be removed from floor to ceiling starting at the Southeast corner spanning four (4) feet to the east and west. This includes any




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associated spray-on fire proofing as well as any other type of insulation. The drywall ceiling should be removed two (2) feet from the edge of all columns radiating out in all directions. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

Windows: Drywall and any associated insulation should be removed two (2) feet

around all windows. The wall cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

East Exterior Wall:

In the area where light water damage was noted on the ceiling; the drywall ceiling should be removed two (2) feet from the edge of water damage radiating out in all directions. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.

Central Chase:

All vinyl wall coverings and drywall should be removed from floor to ceiling. This includes any associated spray-on fire proofing as well as any other type of insulation. The drywall ceiling should be removed two (2) feet from the edge of chase radiating out in all directions. The wall and ceiling cavities should be thoroughly cleaned and dried following current industry standards. Should additional water damage or VPFG be found then continue removal two (2) feet from the edge of water damage or VPFG contaminated area.




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4.0 SAMPLING METHODS 4.1 Thermal Comfort

Temperature and relative humidity measurements are often collected as part of an IAQ investigation because they affect the perception of comfort in an indoor environment. The American Society of Heating and Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) guidance standard 55-2004 Thermal Environmental Conditions for Human Occupancy (ASHRAE 55) specifies conditions or a comfort zone in which 80% of occupants would be expected to find the environment thermally acceptable the comfort zone is determined by temperature and humidity, and assumes clothing worn by and activity levels of occupants to be typical of those in office spaces. For the purposes of this investigation, dry bulb temperature is assumed to be the same as operative temperature described in ASHRAE 55. In addition, ASHRAE recommends that relative humidity be maintained below 65% to inhibit fungal growth on building surfaces. Thermal comfort conditions for temperature and relative humidity was taken from a central area within the affected area using a TSI Q-Trak Model 7565x during the assessment.

4.2 Biological Surface Samples Surface samples were collected via tape lift, immediately sealed and labeled. All samples were submitted under a signed Chain of Custody (COC) to EMSL, an American Industrial Hygiene Accredited Laboratory in Environmental Microbiology.

4.3 Moisture Measurements

All moisture measurements were taken using a Tramex non-intrusive moisture meter. 0-14 is considered dry 14-18 is holding some moisture 18-30 is considered wet"

APPENDIX I

LABORATORY ANALYTICAL RESULTS

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APPENDIX II

SITE PHOTOGRAPHS

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Photo #1: North skylight wall water damaged ceiling that encompasses the structural beam

Photo #2: North skylight wall water damaged ceiling that encompasses the structural beam

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Photo #3: North skylight wall wet drywall and insulation located below the raised floor around columns

Photo #4: Northeast corner skylight wall VPFG located behind vinyl base molding

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Photo #5: Northeast corner skylight wall VPFG located behind vinyl base molding (close up of picture #4)

Photo #6: North skylight wall wet insulation associated with columns behind drywall

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Photo #7: North room skylight wall water damaged ceiling that encompasses the structural beam


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Photo #9: North room skylight wall heavy rust on the structural beam


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Photo #11: North room skylight wall VPFG and rust located on drywall tape that fell from the area in picture 10.

Photo #12: North room skylight wall water staining on blinds

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Photo #13: Section of the west wall shows vinyl covered columns

Photo #14: west wall columns VPFG located on the back side

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Photo #15: west wall VPFG located on the drywall behind the vinyl base cove

Photo #16: west wall near southwest column water damage to drywall ceiling that encompasses the structural beam

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Photo #17: South wall signs of rodent activity located at the base of the southwest column

Photo #18: South wall heavy water damage, deterioration and VPFG on the window sill near the southeast corner

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Photo #19: South wall southeast corner - water damaged ceiling tile

Photo #20: South wall southeast corner below raised flooring VPFG located on drywall

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Photo #21: Large central chase heavy rust located on the metal corner strips

Photo #22: Sky light connecting to wall

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APPENDIX III

IR SITE PHOTOGRAPHS

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IR Photo #1: Blue color indicates that the building materials could be holding moisture


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IR Photo #8: North wall ceiling near column

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APPENDIX IV

MOISTURE LOCATION MAP

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APPENDIX V

CONSULTANT CREDENTIALS

05112015 ohc building 46 iaq report final - may 2015 a

Documents

ohc project

bay pines va medical

indoor air quality concerns

bay center drive

biological air samples

site photographs appendix

ir photographs appendix

phillip burke