Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Boston Intnl Newcomers
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: 4.4 Max ACH: 9.9 Avg ACH: 5.9 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: 1129.6 cuft: 11296 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 217. ACH Copy paste check (uses total or outside) 4.7. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 398. Co2 test start (ppm) 2400. Co2 test end (ppm) 1310. Run time (min:sec) 10:00. Window air velocity max 989. Window air velocity min 168. Window air velocity avg 486. Window outside air volume (cfm) avg 486. Window cu-ft 1.00. Window cfm max 989. Window cfm min 168. Window cfm avg 486. wACH max 6.8. wACH min 1.2. wACH avg 3.3. wACH Copy paste check (does not match calcultated) 4.7.

Room 115. ACH Copy paste check (uses total or outside) 9.9. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 405. Co2 test start (ppm) 2120. Co2 test end (ppm) 1292. Run time (min:sec) 4:00. Window air velocity max 1039. Window air velocity min 146. Window air velocity avg 380. Window outside air volume (cfm) avg 380. Window cu-ft 1.00. Window cfm max 1039. Window cfm min 146. Window cfm avg 380. wACH max 14.1. wACH min 2.0. wACH avg 5.2. wACH Copy paste check (does not match calcultated) 9.9.

Room 117. ACH Copy paste check (uses total or outside) 6.2. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 405. Co2 test start (ppm) 2230. Co2 test end (ppm) 1390. Run time (min:sec) 6:00. Window air velocity max 369. Window air velocity min 28. Window air velocity avg 126. Window outside air volume (cfm) avg 126. Window cu-ft 1.00. Window cfm max 369. Window cfm min 28. Window cfm avg 126. wACH max 2.4. wACH min 0.2. wACH avg 0.8. wACH Copy paste check (does not match calcultated) 6.2.

Room 209. ACH Copy paste check (uses total or outside) 4.4. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 412. Co2 test start (ppm) 1953. Co2 test end (ppm) 1208. Run time (min:sec) 9:00. Window air velocity max 659. Window air velocity min 93. Window air velocity avg 352. Window outside air volume (cfm) avg 352. Window cu-ft 1.00. Window cfm max 659. Window cfm min 93. Window cfm avg 352. wACH max 4.3. wACH min 0.6. wACH avg 2.3. wACH Copy paste check (does not match calcultated) 4.4.

Room 212. ACH Copy paste check (uses total or outside) 4.9. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 412. Co2 test start (ppm) 1974. Co2 test end (ppm) 1164. Run time (min:sec) 9:00. Window air velocity max 1151. Window air velocity min 182. Window air velocity avg 558. Window outside air volume (cfm) avg 558. Window cu-ft 1.00. Window cfm max 1151. Window cfm min 182. Window cfm avg 558. wACH max 7.7. wACH min 1.2. wACH avg 3.8. wACH Copy paste check (does not match calcultated) 4.9.

Room 114. ACH Copy paste check (uses total or outside) 4.3. Window opening length (inches) 43. Window opening height (inches) 4. Co2 ambient (ppm) 460. Co2 test start (ppm) 2151. Co2 test end (ppm) 1351. Run time (min:sec) 9:00. Window air velocity max 482. Window air velocity min 158. Window air velocity avg 286. Window outside air volume (cfm) avg 342. Window cu-ft 1.19. Window cfm max 576. Window cfm min 189. Window cfm avg 342. wACH max 3.1. wACH min 1.0. wACH avg 1.8. wACH Copy paste check (does not match calcultated) 4.3.

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.