Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Baldwin EL 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: 2.5 Max ACH: 5.4 Avg ACH: 4.2 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: 426.5 cuft: 4265 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 105. ACH Copy paste check (uses total or outside) 3.5. Window opening length (inches) 52. Window opening height (inches) 4. Co2 ambient (ppm) 405. Co2 test start (ppm) 2135. Co2 test end (ppm) 1320. Run time (min:sec) 11:00. Window air velocity max 509. Window air velocity min 17. Window air velocity avg 145. Window outside air volume (cfm) avg 209. Window cu-ft 1.44. Window cfm max 735. Window cfm min 25. Window cfm avg 209. wACH max 5.6. wACH min 0.2. wACH avg 1.6. wACH Copy paste check (does not match calcultated) 3.5.

Room 103. ACH Copy paste check (uses total or outside) 5.4. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 397. Co2 test start (ppm) 2304. Co2 test end (ppm) 1512. Run time (min:sec) 6:00. Window air velocity max 806. Window air velocity min 271. Window air velocity avg 441. Window outside air volume (cfm) avg 588. Window cu-ft 1.33. Window cfm max 1075. Window cfm min 361. Window cfm avg 588. wACH max 8.2. wACH min 2.7. wACH avg 4.5. wACH Copy paste check (does not match calcultated) 5.4.

Room 204. ACH Copy paste check (uses total or outside) 5.3. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 397. Co2 test start (ppm) 2006. Co2 test end (ppm) 1194. Run time (min:sec) 8:00. Window air velocity max 1044. Window air velocity min 106. Window air velocity avg 402. Window outside air volume (cfm) avg 536. Window cu-ft 1.33. Window cfm max 1392. Window cfm min 141. Window cfm avg 536. wACH max 9.1. wACH min 0.9. wACH avg 3.5. wACH Copy paste check (does not match calcultated) 5.3.

Room 206. ACH Copy paste check (uses total or outside) 4.7. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 413. Co2 test start (ppm) 3089. Co2 test end (ppm) 2227. Run time (min:sec) 5:00. Window air velocity max 343. Window air velocity min 73. Window air velocity avg 1914. Window outside air volume (cfm) avg 2552. Window cu-ft 1.33. Window cfm max 457. Window cfm min 97. Window cfm avg 2552. wACH max 3.4. wACH min 0.7. wACH avg 19.1. wACH Copy paste check (does not match calcultated) 4.7.

Room 201. ACH Copy paste check (uses total or outside) 2.5. Window opening length (inches) 48. Window opening height (inches) 4. Co2 ambient (ppm) 413. Co2 test start (ppm) 2174. Co2 test end (ppm) 1442. Run time (min:sec) 13:00. Window air velocity max 397. Window air velocity min 66. Window air velocity avg 174. Window outside air volume (cfm) avg 232. Window cu-ft 1.33. Window cfm max 529. Window cfm min 88. Window cfm avg 232. wACH max 3.9. wACH min 0.7. wACH avg 1.7. wACH Copy paste check (does not match calcultated) 2.5.

Room 104. ACH Copy paste check (uses total or outside) 8.7. Window opening length (inches) 50. Window opening height (inches) 4. Co2 ambient (ppm) 395. Co2 test start (ppm) 2240. Co2 test end (ppm) 1429. Run time (min:sec) 4:00. Window air velocity max 623. Window air velocity min 448. Window air velocity avg 520. Window outside air volume (cfm) avg 722. Window cu-ft 1.39. Window cfm max 865. Window cfm min 622. Window cfm avg 722. wACH max 12.2. wACH min 8.8. wACH avg 10.2. 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.

Serial Number: CAB-1718-05152025
Not valid without serial number.


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