Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Sumner Charles Elem
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: 2.8 Max ACH: 8.8 Avg ACH: 4.7 eACH: 0
Filter MERV:
Percent Outside Air: 83
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 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 109. % Outside air 83. Calculated air volume (cfm) outside 532. Calculated air volume (cfm) return 105. Combined air volume (cfm) 637. ACH outside 3.9. ACH merv filter return air 0.8. ACH total 4.7. ACH Copy paste check (uses total or outside) 3.9.

Room 102. % Outside air 88. Calculated air volume (cfm) outside 455. Calculated air volume (cfm) return 63. Combined air volume (cfm) 518. ACH outside 3.3. ACH merv filter return air 0.5. ACH total 3.8. ACH Copy paste check (uses total or outside) 3.3.

Room 201. % Outside air 100. Calculated air volume (cfm) outside 387. Calculated air volume (cfm) return 0. Combined air volume (cfm) 387. ACH outside 2.8. ACH merv filter return air 0.0. ACH total 2.8. ACH Copy paste check (uses total or outside) 2.8.

Room 202. % Outside air 100. Calculated air volume (cfm) outside 694. Calculated air volume (cfm) return 0. Combined air volume (cfm) 694. ACH outside 4.9. ACH merv filter return air 0.0. ACH total 4.9. ACH Copy paste check (uses total or outside) 4.9.

Room 209. % Outside air 42. Calculated air volume (cfm) outside 183. Calculated air volume (cfm) return 254. Combined air volume (cfm) 437. ACH outside 1.4. ACH merv filter return air 1.9. ACH total 3.3. ACH Copy paste check (uses total or outside) 1.2.

Room 103. % Outside air 69. Calculated air volume (cfm) outside 400. Calculated air volume (cfm) return 180. Combined air volume (cfm) 580. ACH outside 3.1. ACH merv filter return air 1.4. ACH total 4.5. ACH Copy paste check (uses total or outside) 3.1.

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.