Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Kenny Thomas J Elem
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: 2.6 Max ACH: 4.3 Avg ACH: 3.4 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: 751.5 cuft: 7515 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 110. ACH Copy paste check (uses total or outside) 3.3. Window opening length (inches) 24. Window opening height (inches) 4. Co2 ambient (ppm) 409. Co2 test start (ppm) 1985. Co2 test end (ppm) 1122. Run time (min:sec) 14:00. Window air velocity max 420. Window air velocity min 311. Window air velocity avg 362. Window outside air volume (cfm) avg 241. Window cu-ft 0.67. Window cfm max 280. Window cfm min 207. Window cfm avg 241. wACH max 1.9. wACH min 1.4. wACH avg 1.6. wACH Copy paste check (does not match calcultated) 3.3.

Room 208. ACH Copy paste check (uses total or outside) 2.9. Window opening length (inches) 24. Window opening height (inches) 4. Co2 ambient (ppm) 430. Co2 test start (ppm) 2065. Co2 test end (ppm) 1258. Run time (min:sec) 14:00. Window air velocity max 300. Window air velocity min 0. Window air velocity avg 194. Window outside air volume (cfm) avg 129. Window cu-ft 0.67. Window cfm max 200. Window cfm min 0. Window cfm avg 129. wACH max 1.3. wACH min 0.0. wACH avg 0.9. wACH Copy paste check (does not match calcultated) 2.9.

Room 205. ACH Copy paste check (uses total or outside) 4.1. Window opening length (inches) 24. Window opening height (inches) 4. Co2 ambient (ppm) 430. Co2 test start (ppm) 2040. Co2 test end (ppm) 1238. Run time (min:sec) 10:00. Window air velocity max 423. Window air velocity min 17. Window air velocity avg 231. Window outside air volume (cfm) avg 154. Window cu-ft 0.67. Window cfm max 282. Window cfm min 11. Window cfm avg 154. wACH max 1.9. wACH min 0.1. wACH avg 1.0. wACH Copy paste check (does not match calcultated) 4.1.

Room 100. ACH Copy paste check (uses total or outside) 4.3. Window opening length (inches) 24. Window opening height (inches) 4. Co2 ambient (ppm) 425. Co2 test start (ppm) 2007. Co2 test end (ppm) 1252. Run time (min:sec) 9:00. Window air velocity max 620. Window air velocity min 347. Window air velocity avg 414. Window outside air volume (cfm) avg 276. Window cu-ft 0.67. Window cfm max 413. Window cfm min 231. Window cfm avg 276. wACH max 2.8. wACH min 1.6. wACH avg 1.9. wACH Copy paste check (does not match calcultated) 4.3.

Room 101. ACH Copy paste check (uses total or outside) 3.6. Window opening length (inches) 24. Window opening height (inches) 4. Co2 ambient (ppm) 425. Co2 test start (ppm) 1978. Co2 test end (ppm) 1189. Run time (min:sec) 12:00. Window air velocity max 448. Window air velocity min 156. Window air velocity avg 308. Window outside air volume (cfm) avg 205. Window cu-ft 0.67. Window cfm max 299. Window cfm min 104. Window cfm avg 205. wACH max 2.0. wACH min 0.7. wACH avg 1.4. wACH Copy paste check (does not match calcultated) 3.6.

Room B02. ACH Copy paste check (uses total or outside) 6. Window opening length (inches) 47. Window opening height (inches) 4. Co2 ambient (ppm) 405. Co2 test start (ppm) 2300. Co2 test end (ppm) 1450. Run time (min:sec) 6:00. Window air velocity max 875. Window air velocity min 594. Window air velocity avg 740. Window outside air volume (cfm) avg 966. Window cu-ft 1.31. Window cfm max 1142. Window cfm min 776. Window cfm avg 966. wACH max 9.1. wACH min 6.2. wACH avg 7.7. wACH Copy paste check (does not match calcultated) 6.

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.