Issue link: https://hi.iaq.net/i/630729
About This Document 3 to a complaint from one or more building occupants. IAQ complaints can affect entire buildings or be limited to areas as small as an individual work station. The goal of the investigation is to resolve the complaint without causing other problems. Section 6 describes a variety of informa- tion-gathering strategies used to identify the cause of an IAQ problem. This section provides suggestions for in-house staff who have been given the responsibility of investigating the problem. It will also help building management to understand and oversee the activities of any outside professionals who may be brought in to assist in the investigation. Section 7: Mitigating IAQ Problems The basic approaches to mitigating indoor air quality problems are: control of pollutant sources; modifications to the ventilation system; air cleaning; and control of exposures to occupants. Suc- cessful mitigation often involves a combi- nation of these techniques. Section 7 provides criteria for judging potential mitigation strategies and for determining whether a problem has been solved. It includes brief descriptions of common indoor air quality problems and possible solutions. Section 8: Hiring Professional Assis- tance to Solve an IAQ Problem Indoor air quality is an emerging and interdisciplinary field. Section 8 provides guidance in hiring professional assistance if you decide that outside expertise is needed to determine the cause of an IAQ problem. Tab IV: Appendices Appendix A: Common IAQ Measurements – A General Guide Appendix A describes measurement techniques that are commonly used for IAQ investigations. If you are responsible for developing an IAQ profile or investi- gating an IAQ complaint, Appendix A provides suggestions for collecting and interpreting information on: temperature and humidity; airflow patterns; carbon dioxide; ventilation (outdoor) air quanti- ties; and commonly measured environmen- tal contaminants. Appendix B: HVAC Systems and IAQ Appendix B presents basic information on HVAC system designs and components and their effects on indoor air quality. This appendix is designed to accompany the HVAC Checklists in Tab V. Appendix C: Moisture, Mold and Mildew Appendix C discusses indoor moisture and its relationship to mold and mildew growth. The role of humidity in creating mold and mildew problems is often misunderstood because relative humidity readings taken in the breathing zone of an occupied space give little indication of conditions at the wall and ceiling surfaces or in the wall cavities. This appendix describes ways in which to evaluate how moisture may be causing indoor air quality problems and how successful different mitigation measures may be in reducing those problems. Appendix D: Asbestos Appendix D is a brief discussion of asbestos. If asbestos is a concern in your building, this appendix and the Appendix G section will direct you to sources of detailed guidance. Appendix E: Radon Appendix E is a brief discussion of radon. To learn more about how to check for radon in your building, refer to this appendix. Appendix G will direct you to