Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Warren Prescott K 8
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: Technology
Min ACH: 1.6 Max ACH: 5.4 Avg ACH: 3.3 eACH: 0
Filter MERV:
Percent Outside Air: 66.6
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 sqft: 0 cuft: CLASSROOM VOLUME (FT3 ) 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 105. % Outside air 85. Calculated air volume (cfm) outside 570. Calculated air volume (cfm) return 100. Combined air volume (cfm) 670. ACH outside 4.2. ACH merv filter return air 0.7. ACH total 5.0. ACH Copy paste check (uses total or outside) 4.2.

Room 104. % Outside air 67. Calculated air volume (cfm) outside 455. Calculated air volume (cfm) return 220. Combined air volume (cfm) 675. ACH outside 3.7. ACH merv filter return air 1.8. ACH total 5.4. ACH Copy paste check (uses total or outside) 3.7.

Room 206. % Outside air 63. Calculated air volume (cfm) outside 195. Calculated air volume (cfm) return 115. Combined air volume (cfm) 310. ACH outside 1.6. ACH merv filter return air 1.0. ACH total 2.6. ACH Copy paste check (uses total or outside) 1.6.

Room 207. % Outside air 59. Calculated air volume (cfm) outside 200. Calculated air volume (cfm) return 140. Combined air volume (cfm) 340. ACH outside 1.7. ACH merv filter return air 1.2. ACH total 2.9. ACH Copy paste check (uses total or outside) 1.7.

Room 211. % Outside air 57. Calculated air volume (cfm) outside 170. Calculated air volume (cfm) return 130. Combined air volume (cfm) 300. ACH outside 1.4. ACH merv filter return air 1.1. ACH total 2.5. ACH Copy paste check (uses total or outside) 1.4.

Room ROOM. ACH Copy paste check (uses total or outside) copy paste check (does not match anything). Window opening length (inches) WINDOW OPENING LENGTH (INCHES). Window opening height (inches) WINDOW OPENING HEIGHT (INCHES). Co2 ambient (ppm) CO2 AMBIENT (PPM). Co2 test start (ppm) CO2 TEST START (PPM). Co2 test end (ppm) CO2 TEST END (PPM). Run time (min:sec) RUN TIME (MIN:SEC). Window air velocity max WINDOW AIR VELOCITY MAX. Window air velocity min WINDOW AIR VELOCITY MIN. Window air velocity avg WINDOW AIR VELOCITY AVG. Window outside air volume (cfm) avg WINDOW OUTSIDE AIR VOLUME (CFM) AVG. Window cu-ft WINDOW CU-FT. Window cfm max WINDOW CFM MAX. Window cfm min WINDOW CFM MIN. Window cfm avg WINDOW CFM AVG. wACH max ACH MAX. wACH min ACH MIN. wACH avg ACH AVG. wACH Copy paste check (does not match calcultated) copy paste check (does not match anything).

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.