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ES+H Multifamily Building Upgrades_508c_02 09 2016

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Energy Savings Plus Health | INDOOR AIR QUALITY GUIDELINES FOR MULTIFAMILY BUILDING UPGRADES 17 Section 2: Assessment Protocols and Recommended Actions Contaminants and Sources PRIORITY ISSUE 1.0 MOISTURE CONTROL AND MOLD ASSESSMENT PROTOCOLS (AP) MINIMUM ACTIONS (MA) EXPANDED ACTIONS (EA) AP 1.1 Inspect for Moisture Problems and Document Results Inspect the interior and exterior of the building and the building's mechanical systems for evidence of moisture problems. Examples of moisture and mold problems include the following: • Water damage or stains (e.g., on walls, ceilings or floor coverings) • Foundation cracks that leak water • Signs of seepage or wicking (e.g., efflorescence, peeling paint, delaminating materials) • Visible mold growth • Mold growth in ductwork and plenums • Wet or damp spots • Musty odor • Groundwater, surface water and rainwater intrusion • Plumbing leaks • Leakage though penetrations in the building envelope (e.g., utility entry points) • Condensation or moisture damage on and around windows • Other condensation (consider surface temperature, relative humidity and dew point temperature when evaluating the potential for condensation problems) Document the extent and location of the problems and the proposed repairs. MA 1.1 Repair Moisture Problems Repair moisture problems identified during the assessments (e.g., plumbing leaks; rain leaks, including leaks around windows and flashing; roof leaks; foundation leaks). It is important to correct a moisture problem at its source. MA 1.2 Conduct Required Mold Remediation Conduct any required mold remediation following professional guidance, such as EPA's Mold Remediation in Schools and Commercial Buildings guide and Institute of Inspection, Cleaning and Restoration Certification (IICRC) Mold Remediation Standard S520. Do not disturb mold growth without following professional guidelines. MA 1.3 Address Standing Water Problems Address standing water problems (e.g., surface water pooling near the foundation, water that does not drain from flat roofs and gutters). Ensure that there is adequate slope and drainage away from the building. Correct standing water problems near foundations and crawlspaces before insulating and weatherizing. MA 1.4 Manage Rainwater Manage rainwater in assemblies that are included in the scope of work (e.g., using drainage planes and flashings). Ensure that there is adequate slope and drainage away from the building, particularly for downspouts that carry rainwater from the roof. MA 1.5 Ensure Proper HVAC Condensate Drainage Ensure that condensate collects in drain pans under cooling coils and exits via a deep seal trap. Standing water will accumulate if the drain pan system has not been designed to drain completely under all operating conditions (sloped toward the drain and properly trapped). It is important to verify that condensate lines are properly trapped and charged with liquid. EA 1.1 Retrofit Crawlspaces Where permitted by building codes, retrofit crawlspaces so that they are sealed, insulated, ventilated with conditioned air, properly drained and waterproofed (see EPA's Moisture Control Guidance for Building Design, Construction and Maintenance, and the 2012 International Building Code, Section 1203.3.2). Install a high capacity, energy-efficient dehumidifier in the crawlspace if the climate conditions warrant. EA 1.2 Perform Additional Mold Remediation Activities Perform additional activities, beyond those required for the building upgrade project, to remediate any observed mold growth. Follow EPA or other professional guidance. See Appendix A: Worker Protection Appendix B: Property Management and Occupant Education

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