Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: McKay Donald K 8
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: 4.1 Max ACH: 8.1 Avg ACH: 5.7 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: 633.6 cuft: 6336 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 18. ACH Copy paste check (uses total or outside) 6. Window opening length (inches) 52. Window opening height (inches) 4. Co2 ambient (ppm) 430. Co2 test start (ppm) 2270. Co2 test end (ppm) 1445. Run time (min:sec) 6:00. Window air velocity max 421. Window air velocity min 37. Window air velocity avg 184. Window outside air volume (cfm) avg 266. Window cu-ft 1.44. Window cfm max 608. Window cfm min 53. Window cfm avg 266. wACH max 4.5. wACH min 0.4. wACH avg 2.0. wACH Copy paste check (does not match calcultated) 6.

Room 105. ACH Copy paste check (uses total or outside) 6.3. Window opening length (inches) 72. Window opening height (inches) 4. Co2 ambient (ppm) 425. Co2 test start (ppm) 2127. Co2 test end (ppm) 1237. Run time (min:sec) 7:00. Window air velocity max 564. Window air velocity min 57. Window air velocity avg 274. Window outside air volume (cfm) avg 548. Window cu-ft 2.00. Window cfm max 1128. Window cfm min 114. Window cfm avg 548. wACH max 7.7. wACH min 0.8. wACH avg 3.7. wACH Copy paste check (does not match calcultated) 6.3.

Room 106. ACH Copy paste check (uses total or outside) 4.1. Window opening length (inches) 72. Window opening height (inches) 4. Co2 ambient (ppm) 425. Co2 test start (ppm) 2415. Co2 test end (ppm) 1664. Run time (min:sec) 7:00. Window air velocity max 632. Window air velocity min 90. Window air velocity avg 340. Window outside air volume (cfm) avg 680. Window cu-ft 2.00. Window cfm max 1264. Window cfm min 180. Window cfm avg 680. wACH max 8.4. wACH min 1.2. wACH avg 4.5. wACH Copy paste check (does not match calcultated) 4.1.

Room 217. ACH Copy paste check (uses total or outside) 4.8. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 416. Co2 test start (ppm) 2072. Co2 test end (ppm) 1293. Run time (min:sec) 8:00. Window air velocity max 1165. Window air velocity min 176. Window air velocity avg 430. Window outside air volume (cfm) avg 627. Window cu-ft 1.67. Window cfm max 1942. Window cfm min 293. Window cfm avg 717. wACH max 12.9. wACH min 1.9. wACH avg 4.7. wACH Copy paste check (does not match calcultated) 4.8.

Room 216. ACH Copy paste check (uses total or outside) 5.1. Window opening length (inches) 60. Window opening height (inches) 4. Co2 ambient (ppm) 411. Co2 test start (ppm) 2015. Co2 test end (ppm) 1221. Run time (min:sec) 8:00. Window air velocity max 679. Window air velocity min 330. Window air velocity avg 443. Window outside air volume (cfm) avg 738. Window cu-ft 1.67. Window cfm max 1132. Window cfm min 550. Window cfm avg 738. wACH max 7.5. wACH min 3.7. wACH avg 4.9. wACH Copy paste check (does not match calcultated) 5.1.

Room 103. ACH Copy paste check (uses total or outside) 2.5. Window opening height (inches) 4. Co2 ambient (ppm) 450. Co2 test start (ppm) 2225. Co2 test end (ppm) 1103. Run time (min:sec) 24:00:00. Window cu-ft #VALUE!. Window cfm max #VALUE!. Window cfm min #VALUE!. Window cfm avg #VALUE!. wACH max #VALUE!. wACH min #VALUE!. wACH avg #VALUE!. wACH Copy paste check (does not match calcultated) 2.5.

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.