Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Boston Day Evening Acad
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: 6.7 Max ACH: 12.7 Avg ACH: 8.7 eACH: 0
Filter MERV:
Percent Outside Air: 100
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 sqft: 858.6 cuft: 8586 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 118. ACH Copy paste check (uses total or outside) 6.7. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 424. Co2 test start (ppm) 1996. Co2 test end (ppm) 1230. Run time (min:sec) 6:00. Window air velocity max 632. Window air velocity min 195. Window air velocity avg 416. Window outside air volume (cfm) avg 566. Window cu-ft 1.36. Window cfm max 860. Window cfm min 265. Window cfm avg 566. wACH max 8.6. wACH min 2.6. wACH avg 5.6. wACH Copy paste check (does not match calcultated) 6.7.

Room 220. ACH Copy paste check (uses total or outside) 7.3. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 424. Co2 test start (ppm) 2130. Co2 test end (ppm) 1249. Run time (min:sec) 6:00. Window air velocity max 507. Window air velocity min 128. Window air velocity avg 243. Window outside air volume (cfm) avg 331. Window cu-ft 1.36. Window cfm max 690. Window cfm min 174. Window cfm avg 331. wACH max 7.4. wACH min 1.9. wACH avg 3.5. wACH Copy paste check (does not match calcultated) 7.3.

Room 101. ACH Copy paste check (uses total or outside) 8.2. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 455. Co2 test start (ppm) 2066. Co2 test end (ppm) 1266. Run time (min:sec) 5:00. Window air velocity max 870. Window air velocity min 183. Window air velocity avg 412. Window outside air volume (cfm) avg 561. Window cu-ft 1.36. Window cfm max 1184. Window cfm min 249. Window cfm avg 561. wACH max 12.8. wACH min 2.7. wACH avg 6.1. wACH Copy paste check (does not match calcultated) 8.2.

Room 119A. ACH Copy paste check (uses total or outside) 8.1. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 455. Co2 test start (ppm) 1950. Co2 test end (ppm) 1118. Run time (min:sec) 6:00. Window air velocity max 558. Window air velocity min 111. Window air velocity avg 377. Window outside air volume (cfm) avg 513. Window cu-ft 1.36. Window cfm max 760. Window cfm min 151. Window cfm avg 513. wACH max 8.5. wACH min 1.7. wACH avg 5.8. wACH Copy paste check (does not match calcultated) 8.1.

Room 205. ACH Copy paste check (uses total or outside) 12.7. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 455. Co2 test start (ppm) 2010. Co2 test end (ppm) 1121. Run time (min:sec) 4:00. Window air velocity max 372. Window air velocity min 164. Window air velocity avg 281. Window outside air volume (cfm) avg 382. Window cu-ft 1.36. Window cfm max 506. Window cfm min 223. Window cfm avg 382. wACH max 5.5. wACH min 2.4. wACH avg 4.1. wACH Copy paste check (does not match calcultated) 12.7.

Room 104. ACH Copy paste check (uses total or outside) 5.4. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 398. Co2 test start (ppm) 2188. Co2 test end (ppm) 1061. Run time (min:sec) 11:00. Window air velocity max 891. Window air velocity min 176. Window air velocity avg 501. Window outside air volume (cfm) avg 501. Window cu-ft 1.00. Window cfm max 891. Window cfm min 176. Window cfm avg 501. wACH max 6.2. wACH min 1.2. wACH avg 3.5. wACH Copy paste check (does not match calcultated) 5.4.

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.

Serial Number: CAB-1721-05162025
Not valid without serial number.


Optional Signature                                                            Date

 

Back