MALB_2014 with 1-21 Revisions

Normative Appendix A ANSI/AARST MALB-2014 with 1/21 Revisions A— Reporting Building Operating Conditions 9 Table A-4 Some Cities In This Climate Zone Note—Exact percentages will vary slightly depending upon location New York, NY Philadelphia, PA Richmond, VA Washington, DC Baltimore, MD Louisville, KY Cincinnati, OH Nashville, TN Saint Louis, MO Kansas City, MO Amarillo, TX Portland, OR Seattle, WA n Mixed Climate Zone 4 Includes portions of NY, NJ, PA, MD VA, KT, TN, KS, MO, WA and OR. This data is based on Philadelphia, PA 24 Hour Averages For dwellings and other 24 hour occupancies Operating Condition Prevailing Annually Heating Conditions 66% Cooling Conditions 16% Mixed Conditions 16% Normal Operating Condition • Heating conditions • No variance in outdoor air ventilation Condition less likely to inhibit characterization of a radon hazard • Heating and air distribution systems active Daytime Averages For non-residential occupancies Operating Condition Prevailing Annually School (prevailing across 9 months) Heating Conditions 58% 78% Cooling Conditions 25% - Mixed Conditions 16% 22% Normal Operating Condition • Heating conditions • No variance in outdoor air ventilation Condition less likely to inhibit characterization of a radon hazard • Heating and air distribution systems active