Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Brighton H S
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: 3.9 Max ACH: 5 Avg ACH: 4.4 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: 790.7 cuft: 7907 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 117. ACH Copy paste check (uses total or outside) 4.4. Window opening length (inches) 43. Window opening height (inches) 4. Co2 ambient (ppm) 460. Co2 test start (ppm) 21117. Co2 test end (ppm) 1319. Run time (min:sec) 9:00. Window air velocity max 777. Window air velocity min 300. Window air velocity avg 524. Window outside air volume (cfm) avg 626. Window cu-ft 1.19. Window cfm max 928. Window cfm min 358. Window cfm avg 626. wACH max 4.9. wACH min 1.9. wACH avg 3.3. wACH Copy paste check (does not match calcultated) 4.4.

Room 226. ACH Copy paste check (uses total or outside) 5. Window opening length (inches) 34. Window opening height (inches) 4. Co2 ambient (ppm) 410. Co2 test start (ppm) 2200. Co2 test end (ppm) 1412. Run time (min:sec) 7:00. Window air velocity max 303. Window air velocity min 18. Window air velocity avg 139. Window outside air volume (cfm) avg 131. Window cu-ft 0.94. Window cfm max 286. Window cfm min 17. Window cfm avg 131. wACH max 1.7. wACH min 0.1. wACH avg 0.8. wACH Copy paste check (does not match calcultated) 5.

Room 204. ACH Copy paste check (uses total or outside) 4.8. Window opening length (inches) 42. Window opening height (inches) 4. Co2 ambient (ppm) 410. Co2 test start (ppm) 2120. Co2 test end (ppm) 1310. Run time (min:sec) 8:00. Window air velocity max 654. Window air velocity min 20. Window air velocity avg 251. Window outside air volume (cfm) avg 293. Window cu-ft 1.17. Window cfm max 763. Window cfm min 23. Window cfm avg 293. wACH max 4.6. wACH min 0.1. wACH avg 1.8. wACH Copy paste check (does not match calcultated) 4.8.

Room 326. ACH Copy paste check (uses total or outside) 3.9. Window opening length (inches) 34. Window opening height (inches) 4. Co2 ambient (ppm) 426. Co2 test start (ppm) 2850. Co2 test end (ppm) 1971. Run time (min:sec) 7:00. Window air velocity max 441. Window air velocity min 164. Window air velocity avg 328. Window outside air volume (cfm) avg 305. Window cu-ft 0.94. Window cfm max 417. Window cfm min 155. Window cfm avg 310. wACH max 2.6. wACH min 1.0. wACH avg 1.9. wACH Copy paste check (does not match calcultated) 3.9.

Room 312. ACH Copy paste check (uses total or outside) 4.5. Window opening length (inches) 41. Window opening height (inches) 4. Co2 ambient (ppm) 426. Co2 test start (ppm) 2089. Co2 test end (ppm) 1271. Run time (min:sec) 9:00. Window air velocity max 577. Window air velocity min 144. Window air velocity avg 315. Window outside air volume (cfm) avg 359. Window cu-ft 1.14. Window cfm max 657. Window cfm min 164. Window cfm avg 359. wACH max 4.2. wACH min 1.0. wACH avg 2.3. wACH Copy paste check (does not match calcultated) 4.5.

Room 101. ACH Copy paste check (uses total or outside) 8. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 412. Co2 test start (ppm) 2090. Co2 test end (ppm) 1070. Run time (min:sec) 7:00. Window air velocity max 621. Window air velocity min 121. Window air velocity avg 437. Window outside air volume (cfm) avg 583. Window cu-ft 1.33. Window cfm max 828. Window cfm min 161. Window cfm avg 583. wACH max 6.3. wACH min 1.2. wACH avg 4.4. wACH Copy paste check (does not match calcultated) 8.

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.