MALB_2014 with 1-21 Revisions

Normative Appendix A ANSI/AARST MALB-2014 with 1/21 Revisions A— Reporting Building Operating Conditions 6 Table A-7 Some Cities In This Climate Zone Note—Exact percentages will vary slightly depending upon location Caribou ME Quebec, CA Marquette MI Duluth MN Winnipeg, CA Grand Forks, ND Anchorage, AK Breckenridge, CO Aspen, CO n Very Cold Climate Zone 7 Includes many Canadian provinces, mountain tops, and utmost northern locations in the United States This data is based on Minot, ND 24 Hour Averages For dwellings and other 24 hour occupancies Operating Condition Prevailing Annually Heating Conditions 83% Cooling Conditions - 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 75% 100% Cooling Conditions - - Mixed Conditions 25% - 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

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