Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Lee Acad Pilot
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: 4 Max ACH: 8.4 Avg ACH: 6.9 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: 831.5 cuft: 8315 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 101. ACH Copy paste check (uses total or outside) 7.2. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 409. Co2 test start (ppm) 2061. Co2 test end (ppm) 1123. Run time (min:sec) 7:00. Window air velocity max 650. Window air velocity min 59. Window air velocity avg 279. Window outside air volume (cfm) avg 465. Window cu-ft 1.67. Window cfm max 1083. Window cfm min 98. Window cfm avg 465. wACH max 8.1. wACH min 0.7. wACH avg 3.5. wACH Copy paste check (does not match calcultated) 7.2.

Room 204. ACH Copy paste check (uses total or outside) 7.5. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 420. Co2 test start (ppm) 2165. Co2 test end (ppm) 1297. Run time (min:sec) 6:00. Window air velocity max 87. Window air velocity min 57. Window air velocity avg 69. Window outside air volume (cfm) avg 115. Window cu-ft 1.67. Window cfm max 145. Window cfm min 95. Window cfm avg 115. wACH max 1.1. wACH min 0.7. wACH avg 0.8. wACH Copy paste check (does not match calcultated) 7.5.

Room 205. ACH Copy paste check (uses total or outside) 8.4. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 420. Co2 test start (ppm) 2170. Co2 test end (ppm) 1289. Run time (min:sec) 5:00. Window air velocity max 72. Window air velocity min 57. Window air velocity avg 59. Window outside air volume (cfm) avg 98. Window cu-ft 1.67. Window cfm max 120. Window cfm min 95. Window cfm avg 98. wACH max 0.9. wACH min 0.7. wACH avg 0.7. wACH Copy paste check (does not match calcultated) 8.4.

Room 107. ACH Copy paste check (uses total or outside) 4. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 447. Co2 test start (ppm) 1920. Co2 test end (ppm) 1207. Run time (min:sec) 10:00. Window air velocity max 562. Window air velocity min 49. Window air velocity avg 276. Window outside air volume (cfm) avg 460. Window cu-ft 1.67. Window cfm max 937. Window cfm min 82. Window cfm avg 460. wACH max 7.0. wACH min 0.6. wACH avg 3.4. wACH Copy paste check (does not match calcultated) 4.

Room 108. ACH Copy paste check (uses total or outside) 7.8. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 447. Co2 test start (ppm) 2013. Co2 test end (ppm) 1264. Run time (min:sec) 5:00. Window air velocity max 557. Window air velocity min 9. Window air velocity avg 357. Window outside air volume (cfm) avg 595. Window cu-ft 1.67. Window cfm max 928. Window cfm min 15. Window cfm avg 595. wACH max 7.1. wACH min 0.1. wACH avg 4.5. wACH Copy paste check (does not match calcultated) 7.8.

Room 117. ACH Copy paste check (uses total or outside) 7.5. Window opening length (inches) 37. Window opening height (inches) 4. Co2 ambient (ppm) 419. Co2 test start (ppm) 2013. Co2 test end (ppm) 1174. Run time (min:sec) 6:00. Window air velocity max 1047. Window air velocity min 284. Window air velocity avg 547. Window outside air volume (cfm) avg 562. Window cu-ft 1.03. Window cfm max 1076. Window cfm min 292. Window cfm avg 562. wACH max 7.8. wACH min 2.1. wACH avg 4.1. wACH Copy paste check (does not match calcultated) 7.5.

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.