Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Boston Adult Tech 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: 8.5 Max ACH: 11.8 Avg ACH: 10.2 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: 1059.7 cuft: 10597 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 107. ACH Copy paste check (uses total or outside) 11.7. Window opening length (inches) 50. Window opening height (inches) 4. Co2 ambient (ppm) 395. Co2 test start (ppm) 2220. Co2 test end (ppm) 1410. Run time (min:sec) 3:00. Window air velocity max 521. Window air velocity min 303. Window air velocity avg 470. Window outside air volume (cfm) avg 653. Window cu-ft 1.39. Window cfm max 724. Window cfm min 421. Window cfm avg 653. wACH max 11.7. wACH min 6.8. wACH avg 10.5. wACH Copy paste check (does not match calcultated) 11.7.

Room 204. ACH Copy paste check (uses total or outside) 11.8. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 419. Co2 test start (ppm) 2900. Co2 test end (ppm) 2096. Run time (min:sec) 2:00. Window air velocity max 643. Window air velocity min 474. Window air velocity avg 550. Window outside air volume (cfm) avg 733. Window cu-ft 1.33. Window cfm max 857. Window cfm min 632. Window cfm avg 733. wACH max 12.9. wACH min 9.5. wACH avg 11.1. wACH Copy paste check (does not match calcultated) 11.8.

Room 211. ACH Copy paste check (uses total or outside) 10.7. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 419. Co2 test start (ppm) 2250. Co2 test end (ppm) 1315. Run time (min:sec) 4:00. Window air velocity max 632. Window air velocity min 399. Window air velocity avg 510. Window outside air volume (cfm) avg 680. Window cu-ft 1.33. Window cfm max 843. Window cfm min 532. Window cfm avg 680. wACH max 12.9. wACH min 8.1. wACH avg 10.4. wACH Copy paste check (does not match calcultated) 10.7.

Room 304. ACH Copy paste check (uses total or outside) 8.5. Window opening length (inches) 41. Window opening height (inches) 4. Co2 ambient (ppm) 561. Co2 test start (ppm) 2354. Co2 test end (ppm) 1577. Run time (min:sec) 4:00. Window air velocity max 582. Window air velocity min 282. Window air velocity avg 396. Window outside air volume (cfm) avg 451. Window cu-ft 1.14. Window cfm max 663. Window cfm min 321. Window cfm avg 451. wACH max 10.8. wACH min 5.2. wACH avg 7.4. wACH Copy paste check (does not match calcultated) 8.5.

Room 310. ACH Copy paste check (uses total or outside) 10. Window opening length (inches) 41. Window opening height (inches) 4. Co2 ambient (ppm) 561. Co2 test start (ppm) 1939. Co2 test end (ppm) 1269. Run time (min:sec) 4:00. Window air velocity max 683. Window air velocity min 217. Window air velocity avg 373. Window outside air volume (cfm) avg 425. Window cu-ft 1.14. Window cfm max 778. Window cfm min 247. Window cfm avg 425. wACH max 11.9. wACH min 3.8. wACH avg 6.5. wACH Copy paste check (does not match calcultated) 10.

Room 1. ACH Copy paste check (uses total or outside) 5.5. Window opening length (inches) 46. Window opening height (inches) 4. Co2 ambient (ppm) 425. Co2 test start (ppm) 2005. Co2 test end (ppm) 1257. Run time (min:sec) 7:00. Window air velocity max 345. Window air velocity min 83. Window air velocity avg 173. Window outside air volume (cfm) avg 221. Window cu-ft 1.28. Window cfm max 441. Window cfm min 106. Window cfm avg 221. wACH max 2.5. wACH min 0.6. wACH avg 1.3. wACH Copy paste check (does not match calcultated) 5.5.

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.