Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Henderson K 12 Lower
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: 0 Max ACH: 0 Avg ACH: 0 eACH: 0
Filter MERV:
Percent Outside Air: 100
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 8 sqft: 829.1 cuft: 8291 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 3. Calculated air volume (cfm) outside 240. ACH outside 1.6. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 1.7.

Room 6. Calculated air volume (cfm) outside 385. ACH outside 1.9. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 1.9.

Room 8. Calculated air volume (cfm) outside 420. ACH outside 2.9. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 2.9.

Room 7. Calculated air volume (cfm) outside 415. ACH outside 2.8. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 2.9.

Room 1. Calculated air volume (cfm) outside 335. ACH outside 2.3. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 2.3.

Room Cafeteria. Calculated air volume (cfm) outside 305. ACH outside 1.2. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 1.2.

Room Sensory. Calculated air volume (cfm) outside 415. ACH outside 3.2. ACH merv filter return air #VALUE!. ACH total #VALUE!. ACH Copy paste check (uses total or outside) 3.2.

Room 105A. % Outside air 89. Calculated air volume (cfm) outside 312. Calculated air volume (cfm) return 38. Combined air volume (cfm) 350. ACH outside 2.3. ACH merv filter return air 0.3. ACH total 2.5. ACH Copy paste check (uses total or outside) 2.3.

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.