Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: SCHOOL
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
Min ACH: 0 Max ACH: 0 Avg ACH: 0 eACH: 0
Filter MERV:
Percent Outside Air: 56
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 1 sqft: 950.1 cuft: 9501 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 4. ACH Copy paste check (uses total or outside) 8.2. Window opening length (inches) 31. Window opening height (inches) 4. Co2 ambient (ppm) 420. Co2 test start (ppm) 2060. Co2 test end (ppm) 1250. Run time (min:sec) 5:00. Window air velocity max 2005. Window air velocity min 811. Window air velocity avg 1328. Window outside air volume (cfm) avg 1144. Window cu-ft 0.86. Window cfm max 1727. Window cfm min 698. Window cfm avg 1144. wACH max 10.9. wACH min 4.4. wACH avg 7.2. wACH Copy paste check (does not match calcultated) 8.2.

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.