Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Edwards Clarence R Middle
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: 4.1 Max ACH: 6 Avg ACH: 5.2 eACH: 0
Filter MERV:
Percent Outside Air: 76.5
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 sqft: 887.5 cuft: 8875 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 117. % Outside air 80. Calculated air volume (cfm) outside 590. Calculated air volume (cfm) return 150. Combined air volume (cfm) 740. ACH outside 3.8. ACH merv filter return air 1.0. ACH total 4.7. ACH Copy paste check (uses total or outside) 3.6.

Room 210. % Outside air 91. Calculated air volume (cfm) outside 520. Calculated air volume (cfm) return 50. Combined air volume (cfm) 570. ACH outside 5.4. ACH merv filter return air 0.5. ACH total 5.9. ACH Copy paste check (uses total or outside) 5.4.

Room 203. % Outside air 86. Calculated air volume (cfm) outside 450. Calculated air volume (cfm) return 75. Combined air volume (cfm) 525. ACH outside 3.5. ACH merv filter return air 0.6. ACH total 4.1. ACH Copy paste check (uses total or outside) 3.5.

Room 307. % Outside air 83. Calculated air volume (cfm) outside 530. Calculated air volume (cfm) return 110. Combined air volume (cfm) 640. ACH outside 4.0. ACH merv filter return air 0.8. ACH total 4.8. ACH Copy paste check (uses total or outside) 4.

Room 319. % Outside air 62. Calculated air volume (cfm) outside 490. Calculated air volume (cfm) return 300. Combined air volume (cfm) 790. ACH outside 3.7. ACH merv filter return air 2.3. ACH total 6.0. ACH Copy paste check (uses total or outside) 3.7.

Room 106. % Outside air 81. Calculated air volume (cfm) outside 539. Calculated air volume (cfm) return 128. Combined air volume (cfm) 667. ACH outside 3.6. ACH merv filter return air 0.9. ACH total 4.5. ACH Copy paste check (uses total or outside) 3.6.

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.