MALB_2014 with 1-21 Revisions

Normative Appendix A ANSI/AARST MALB-2014 with 1/21 Revisions A— Reporting Building Operating Conditions 7 Table A-6 Some Cities In This Climate Zone Note—Exact percentages will vary slightly depending upon location Portland, ME Buffalo, NY Burlington, NH Milwaukee, WI Minneapolis, MN Bismarck, ND Pierre, SD Cheyenne, WY Billings, MT Helena, MT n Cold Climate Zone 6 Includes portions of ME, NH, VT, WI, MN, ND, WY, SD, ND and Canada. This data is based on Minneapolis, MN 24 Hour Averages For dwellings and other 24 hour occupancies Operating Condition Prevailing Annually Heating Conditions 75% 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 Daytime Averages For non-residential ocupancies Operating Condition Prevailing Annually School (prevailing across 9 months) Heating Conditions 66% 88% Cooling Conditions 16% 11% 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