Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Eliot John K 8 K0 1
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 Max ACH: 7.1 Avg ACH: 4.7 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: 809.8 cuft: 8098 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 205. ACH Copy paste check (uses total or outside) 4.7. Window opening length (inches) 56. Window opening height (inches) 4. Co2 ambient (ppm) 400. Co2 test start (ppm) 2306. Co2 test end (ppm) 1498. Run time (min:sec) 7:00. Window air velocity max 420. Window air velocity min 20. Window air velocity avg 188. Window outside air volume (cfm) avg 292. Window cu-ft 1.56. Window cfm max 653. Window cfm min 31. Window cfm avg 292. wACH max 4.8. wACH min 0.2. wACH avg 2.2. wACH Copy paste check (does not match calcultated) 4.7.

Room 202. ACH Copy paste check (uses total or outside) 5.7. Window opening length (inches) 49. Window opening height (inches) 4. Co2 ambient (ppm) 400. Co2 test start (ppm) 2062. Co2 test end (ppm) 1255. Run time (min:sec) 7:00. Window air velocity max 802. Window air velocity min 122. Window air velocity avg 461. Window outside air volume (cfm) avg 627. Window cu-ft 1.36. Window cfm max 1092. Window cfm min 166. Window cfm avg 627. wACH max 7.7. wACH min 1.2. wACH avg 4.5. wACH Copy paste check (does not match calcultated) 5.7.

Room 304. ACH Copy paste check (uses total or outside) 4.7. Window opening length (inches) 50. Window opening height (inches) 4. Co2 ambient (ppm) 416. Co2 test start (ppm) 2135. Co2 test end (ppm) 1333. Run time (min:sec) 8:00. Window air velocity max 505. Window air velocity min 63. Window air velocity avg 218. Window outside air volume (cfm) avg 303. Window cu-ft 1.39. Window cfm max 701. Window cfm min 88. Window cfm avg 303. wACH max 5.2. wACH min 0.6. wACH avg 2.2. wACH Copy paste check (does not match calcultated) 4.7.

Room 307. ACH Copy paste check (uses total or outside) 3.5. Window opening length (inches) 50. Window opening height (inches) 4. Co2 ambient (ppm) 416. Co2 test start (ppm) 2059. Co2 test end (ppm) 1340. Run time (min:sec) 10:00. Window air velocity max 344. Window air velocity min 44. Window air velocity avg 187. Window outside air volume (cfm) avg 260. Window cu-ft 1.39. Window cfm max 478. Window cfm min 61. Window cfm avg 260. wACH max 3.5. wACH min 0.4. wACH avg 1.9. wACH Copy paste check (does not match calcultated) 3.5.

Room 301. ACH Copy paste check (uses total or outside) 3. Window opening length (inches) 50. Window opening height (inches) 4. Co2 ambient (ppm) 416. Co2 test start (ppm) 2629. Co2 test end (ppm) 1821. Run time (min:sec) 9:00. Window air velocity max 388. Window air velocity min 60. Window air velocity avg 203. Window outside air volume (cfm) avg 282. Window cu-ft 1.39. Window cfm max 539. Window cfm min 83. Window cfm avg 282. wACH max 4.0. wACH min 0.6. wACH avg 2.1. wACH Copy paste check (does not match calcultated) 3.

Room 101. ACH Copy paste check (uses total or outside) 8.7. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 433. Co2 test start (ppm) 2085. Co2 test end (ppm) 1288. Run time (min:sec) 6:00. Window air velocity max 678. Window air velocity min 301. Window air velocity avg 472. Window outside air volume (cfm) avg 787. Window cu-ft 1.67. Window cfm max 1130. Window cfm min 502. Window cfm avg 787. wACH max 8.4. wACH min 3.7. wACH avg 5.8. wACH Copy paste check (does not match calcultated) 8.7.

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.