Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: McKinley Elementary
Address: address
City: Boston
State / Province: MA
Country: USA
Date: 03/21/2021
Data Source: School District
Performed by: External Company
Company Name Address Contact: Cashins & Associates, Inc. 599 North Ave #8, Wakefield, MA 01880
Requirement Source: Boston School 3 ACH guideline

Technology: Natural Ventilation Windows and Limited Univent HVAC
Min ACH: 2 Max ACH: 10.7 Avg ACH: 5.2 eACH: 0
Filter MERV:
Percent Outside Air: 74.3
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 12 sqft: 768 cuft: 7680 No of Buildings: 1

Comments: Source Boston School District March 18, 2021. https://www.bostonpublicschools.org/Page/8463 . https://drive.google.com/file/d/1bzam7XeMQDjjv7Og_86PS41K78hBEOfT/view . assumed 10ft ceiling. wACH windows provided in dataset. Calculated wACH from measured CFM rates in dataset do not match. Differences due to errors. Did not use calculated wACH.

Room 102. % Outside air 67. Calculated air volume (cfm) outside 374. Calculated air volume (cfm) return 186. Combined air volume (cfm) 560. ACH outside 2.7. ACH merv filter return air 1.4. ACH total 4.1. ACH Copy paste check (uses total or outside) 2.7.

Room 109. % Outside air 69. Calculated air volume (cfm) outside 570. Calculated air volume (cfm) return 255. Combined air volume (cfm) 825. ACH outside 4.1. ACH merv filter return air 1.9. ACH total 6.0. ACH Copy paste check (uses total or outside) 4.2.

Room 108. % Outside air 76. Calculated air volume (cfm) outside 312. Calculated air volume (cfm) return 98. Combined air volume (cfm) 410. ACH outside 2.3. ACH merv filter return air 0.7. ACH total 3.0. ACH Copy paste check (uses total or outside) 2.3.

Room 104. % Outside air 92. Calculated air volume (cfm) outside 499. Calculated air volume (cfm) return 41. Combined air volume (cfm) 540. ACH outside 7.3. ACH merv filter return air 0.6. ACH total 7.9. ACH Copy paste check (uses total or outside) 7.3.

Room 203. % Outside air 52. Calculated air volume (cfm) outside 415. Calculated air volume (cfm) return 380. Combined air volume (cfm) 795. ACH outside 3.0. ACH merv filter return air 2.8. ACH total 5.8. ACH Copy paste check (uses total or outside) 3.

Room 201. % Outside air 71. Calculated air volume (cfm) outside 421. Calculated air volume (cfm) return 169. Combined air volume (cfm) 590. ACH outside 3.1. ACH merv filter return air 1.2. ACH total 4.3. ACH Copy paste check (uses total or outside) 3.1.

Room Library. % Outside air 100. Calculated air volume (cfm) outside 275. Calculated air volume (cfm) return 0. Combined air volume (cfm) 275. ACH outside 2.0. ACH merv filter return air 0.0. ACH total 2.0. ACH Copy paste check (uses total or outside) 2.

Room 211. % Outside air 58. Calculated air volume (cfm) outside 355. Calculated air volume (cfm) return 255. Combined air volume (cfm) 610. ACH outside 2.6. ACH merv filter return air 1.9. ACH total 4.4. ACH Copy paste check (uses total or outside) 2.6.

Room 113. % Outside air 84. Calculated air volume (cfm) outside 565. Calculated air volume (cfm) return 105. Combined air volume (cfm) 670. ACH outside 4.1. ACH merv filter return air 0.8. ACH total 4.9. ACH Copy paste check (uses total or outside) 4.1.

Room 114. % Outside air 95. Calculated air volume (cfm) outside 590. Calculated air volume (cfm) return 30. Combined air volume (cfm) 620. ACH outside 4.3. ACH merv filter return air 0.2. ACH total 4.5. ACH Copy paste check (uses total or outside) 4.3.

Room 110 (Nurse). % Outside air 55. Calculated air volume (cfm) outside 147. Calculated air volume (cfm) return 118. Combined air volume (cfm) 265. ACH outside 5.9. ACH merv filter return air 4.8. ACH total 10.7. ACH Copy paste check (uses total or outside) 5.9.

Room 273. % Outside air 56. Calculated air volume (cfm) outside 482. Calculated air volume (cfm) return 379. Combined air volume (cfm) 861. ACH outside 3.8. ACH merv filter return air 3.0. ACH total 6.7. ACH Copy paste check (uses total or outside) 3.8.

In the wake of the COVID-19 disaster many are calling for a paradigm shift in how citizens and government officials think about the quality of the air we breathe indoors. This Clean Air Certificate lets you know that those who operate this building are thinking about the air that we breathe in this building. They have disclosed the ventilation performance of this building so that we all become educated and we never have another indoor infection disaster again.