Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Timilty James
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: 6.6 Max ACH: 12 Avg ACH: 8.7 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: 773.4 cuft: 7734 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 316. ACH Copy paste check (uses total or outside) 7.6. Window opening length (inches) 62. Window opening height (inches) 4. Co2 ambient (ppm) 439. Co2 test start (ppm) 2000. Co2 test end (ppm) 1060. Run time (min:sec) 7:00. Window air velocity max 379. Window air velocity min 64. Window air velocity avg 233. Window outside air volume (cfm) avg 401. Window cu-ft 1.72. Window cfm max 653. Window cfm min 110. Window cfm avg 401. wACH max 5.2. wACH min 0.9. wACH avg 3.2. wACH Copy paste check (does not match calcultated) 7.6.

Room 307. ACH Copy paste check (uses total or outside) 8.4. Window opening length (inches) 62. Window opening height (inches) 4. Co2 ambient (ppm) 439. Co2 test start (ppm) 1997. Co2 test end (ppm) 1215. Run time (min:sec) 5:00. Window air velocity max 512. Window air velocity min 201. Window air velocity avg 408. Window outside air volume (cfm) avg 703. Window cu-ft 1.72. Window cfm max 882. Window cfm min 346. Window cfm avg 703. wACH max 11.5. wACH min 4.5. wACH avg 9.2. wACH Copy paste check (does not match calcultated) 8.4.

Room 216. ACH Copy paste check (uses total or outside) 6.9. Window opening length (inches) 62. Window opening height (inches) 4. Co2 ambient (ppm) 455. Co2 test start (ppm) 2023. Co2 test end (ppm) 1240. Run time (min:sec) 6:00. Window air velocity max 500. Window air velocity min 99. Window air velocity avg 297. Window outside air volume (cfm) avg 512. Window cu-ft 1.72. Window cfm max 861. Window cfm min 171. Window cfm avg 512. wACH max 6.0. wACH min 1.2. wACH avg 3.5. wACH Copy paste check (does not match calcultated) 6.9.

Room 318. ACH Copy paste check (uses total or outside) 10.7. Window opening length (inches) 62. Window opening height (inches) 4. Co2 ambient (ppm) 455. Co2 test start (ppm) 2038. Co2 test end (ppm) 1230. Run time (min:sec) 4:00. Window air velocity max 385. Window air velocity min 252. Window air velocity avg 341. Window outside air volume (cfm) avg 587. Window cu-ft 1.72. Window cfm max 663. Window cfm min 434. Window cfm avg 587. wACH max 4.7. wACH min 3.1. wACH avg 4.2. wACH Copy paste check (does not match calcultated) 10.7.

Room 309. ACH Copy paste check (uses total or outside) 12. Window opening length (inches) 62. Window opening height (inches) 4. Co2 ambient (ppm) 455. Co2 test start (ppm) 2073. Co2 test end (ppm) 1183. Run time (min:sec) 4:00. Window air velocity max 442. Window air velocity min 211. Window air velocity avg 333. Window outside air volume (cfm) avg 574. Window cu-ft 1.72. Window cfm max 761. Window cfm min 363. Window cfm avg 574. wACH max 6.0. wACH min 2.9. wACH avg 4.5. wACH Copy paste check (does not match calcultated) 12.

Room 114. ACH Copy paste check (uses total or outside) 5.4. Window opening length (inches) 22. Window opening height (inches) 4. Co2 ambient (ppm) 415. Co2 test start (ppm) 2304. Co2 test end (ppm) 1427. Run time (min:sec) 7:00. Window air velocity max 658. Window air velocity min 529. Window air velocity avg 574. Window outside air volume (cfm) avg 351. Window cu-ft 0.61. Window cfm max 402. Window cfm min 323. Window cfm avg 351. wACH max 3.1. wACH min 2.5. wACH avg 2.7. wACH Copy paste check (does not match calcultated) 5.4.

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.