Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Curley K 8 Mary Curley
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: 7.3 Avg ACH: 5.8 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: 812.5 cuft: 8125 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 6. ACH Copy paste check (uses total or outside) 5.3. Window opening length (inches) 70. Window opening height (inches) 4. Co2 ambient (ppm) 435. Co2 test start (ppm) 2040. Co2 test end (ppm) 1226. Run time (min:sec) 8:00. Window air velocity max 181. Window air velocity min 32. Window air velocity avg 116. Window outside air volume (cfm) avg 226. Window cu-ft 1.94. Window cfm max 352. Window cfm min 62. Window cfm avg 226. wACH max 1.8. wACH min 0.3. wACH avg 1.1. wACH Copy paste check (does not match calcultated) 5.3.

Room 111. ACH Copy paste check (uses total or outside) 7.3. Window opening length (inches) 72. Window opening height (inches) 4. Co2 ambient (ppm) 538. Co2 test start (ppm) 2320. Co2 test end (ppm) 1511. Run time (min:sec) 5:00. Window air velocity max 726. Window air velocity min 247. Window air velocity avg 609. Window outside air volume (cfm) avg 1218. Window cu-ft 2.00. Window cfm max 1452. Window cfm min 494. Window cfm avg 1218. wACH max 9.8. wACH min 3.3. wACH avg 8.2. wACH Copy paste check (does not match calcultated) 7.3.

Room 118. ACH Copy paste check (uses total or outside) 6.1. Window opening length (inches) 72. Window opening height (inches) 4. Co2 ambient (ppm) 538. Co2 test start (ppm) 2139. Co2 test end (ppm) 1371. Run time (min:sec) 7:00. Window air velocity max 621. Window air velocity min 371. Window air velocity avg 969. Window outside air volume (cfm) avg 1938. Window cu-ft 2.00. Window cfm max 1242. Window cfm min 742. Window cfm avg 1938. wACH max 8.5. wACH min 5.1. wACH avg 13.3. wACH Copy paste check (does not match calcultated) 6.1.

Room 213. ACH Copy paste check (uses total or outside) 6.1. Window opening length (inches) 72. Window opening height (inches) 4. Co2 ambient (ppm) 412. Co2 test start (ppm) 2047. Co2 test end (ppm) 1217. Run time (min:sec) 7:00. Window air velocity max 429. Window air velocity min 98. Window air velocity avg 284. Window outside air volume (cfm) avg 568. Window cu-ft 2.00. Window cfm max 858. Window cfm min 196. Window cfm avg 568. wACH max 6.8. wACH min 1.6. wACH avg 4.5. wACH Copy paste check (does not match calcultated) 6.1.

Room 219. ACH Copy paste check (uses total or outside) 3.9. Window opening length (inches) 72. Window opening height (inches) 4. Co2 ambient (ppm) 412. Co2 test start (ppm) 2289. Co2 test end (ppm) 1521. Run time (min:sec) 8:00. Window air velocity max 529. Window air velocity min 69. Window air velocity avg 209. Window outside air volume (cfm) avg 418. Window cu-ft 2.00. Window cfm max 1058. Window cfm min 138. Window cfm avg 418. wACH max 8.3. wACH min 1.1. wACH avg 3.3. wACH Copy paste check (does not match calcultated) 3.9.

Room 203. ACH Copy paste check (uses total or outside) 7.1. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 400. Co2 test start (ppm) 2208. Co2 test end (ppm) 1400. Run time (min:sec) 5:00. Window air velocity max 281. Window air velocity min 47. Window air velocity avg 122. Window outside air volume (cfm) avg 166. Window cu-ft 1.36. Window cfm max 382. Window cfm min 64. Window cfm avg 166. wACH max 2.8. wACH min 0.5. wACH avg 1.2. wACH Copy paste check (does not match calcultated) 7.1.

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.