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<br />Elk River Parks & Recreation <br />Indoor Ajr Quality ..t\ssessment <br />IE.A. Project No. 7805-1301 <br /> <br />Page 2 <br /> <br />3.0 Sampling lVIethodology <br /> <br />The IAQ investigation \vas conducted on May 9, 2006 and included the follo\ving activities: <br /> <br />. Visual evaluation of the space for signs of \vater infiltration or fungal gro\vth. <br /> <br />. Collection of airbollle fungal samples to determine if fungal levels \vere elevated. An outdoor <br />sample \vas taken for conlparison. <br /> <br />. Collection of fungal samples frolll observed or suspect materials including tease tape, contact and <br />microvac dust sanlples. <br /> <br />. Measurement of moisture levels in building materials. <br /> <br />. Measurenlent of tenlperature, relative humidity, carbon dioxide and carbon monoxide levels. <br /> <br />Airbollle fungal samples \vere collected using a single-stage Andersen nucrobial sanlpler and DG-18 fungal <br />agar plates. An outdoor fungal sample \vas taken for comparison. Each three-minute sanlple \vas collected <br />at an airflo\v rate of approximately 28.3 liters of air per minute. Contact fungal sanlples \vere collected on <br />DG-18 Rodac agar plates. Bulk samples of building materials \vere collected by renloving an actual piece <br />of the material. The bulk samples of dust from carpet tops \vere collected by the Microvac sanlpling <br />method. The sanlples \vere collected \vith three-piece, 37 n1ffi 0.8 ~lm MCE filter cassettes. Sample <br />incubation and analysis \vere provided by Aerotech P & K. <br /> <br />The tease tape sanlple \vas collected by pressing a piece of clear cellophane tape on the suspect <br />contanlinated surface. The tape \vas then mounted on a microscope slide for fungal analysis via light <br />microscopy. The tease tape sample \vas analyzed by Aerotech P & K. <br /> <br />Moisture content of building materials \vas evaluated \vith the Protimeter Surveymaster SM. Moisrure <br />levels in \vater-danlaged ll1aterials are compared \vith moisture levels of the sanle material in areas that <br />have not been impacted by \vater danlage. <br /> <br />Tenlperature, relative humidity, carbon dioxide and carbon monoxide levels \vere llleasured \vith a TSI, <br />Inc. Q- T rak mom tor. <br /> <br />Further details concerning sanlpling and analytical nlethodologies are ll1aintained at lEA and can be <br />provided to the client upon request. <br /> <br />4.0 Results & Discussion <br /> <br />Lab analysis reports can be found in Appendix 1. "Quick reference guidelines" for interpreting lab results <br />are provided follo\ving the presentation of results. Conlplete guidelines are available in Appendix II. <br /> <br />4.1 Culturable Airborne Fungi <br /> <br />Sanlples for culturable airbolne fungi \vere collected the cubicle area \vhere the occupant reported <br />allergy SynlptOms. An outdoor sample \vas taken for conlparison. Results are listed in the table <br />belo\v: <br /> <br />Table 1: Concentrations of Culturable Airborne Fungi - ~lay 9, 2006 <br /> <br />Sample No.! Agar Fungal Identification Colony Con c. Percentage <br />Location Used Co un ts (CFU/m3) (0/0 ) <br />050906BR-02 DG-18 Cladosporiul1z 54 635 90 <br />Outdoors Alternaria 2 24 3 <br /> Basidionzycetes 2 24 3 <br /> Aspergillus versicolor 1 12 2 <br /> Epicoccullzlligrullz 1 12 2 <br /> Total: 706 <br /> <br />C:\Documents and Settings\tallard\Local Settings\Temporary Internet Files\OLKF\attach to 5 8.doc <br />