Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: McKinley Prep H S
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: 5.1 Avg ACH: 3.5 eACH: 0
Filter MERV:
Percent Outside Air: 100
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 5 sqft: 443.2 cuft: 4432 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 202. ACH Copy paste check (uses total or outside) 2.6. Window opening height (inches) 4. Co2 ambient (ppm) 422. Co2 test start (ppm) 2344. Co2 test end (ppm) 1121. Run time (min:sec) 23:00. Window air velocity avg 200. 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) 2.6.

Room 210. ACH Copy paste check (uses total or outside) 2.5. Window opening height (inches) 4. Co2 ambient (ppm) 418. Co2 test start (ppm) 2430. Co2 test end (ppm) 1140. Run time (min:sec) 25:00:00. Window air velocity avg 700. 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.

Room 206. ACH Copy paste check (uses total or outside) 2.8. Window opening height (inches) 4. Co2 ambient (ppm) 418. Co2 test start (ppm) 2930. Co2 test end (ppm) 1330. Run time (min:sec) 22:00. Window air velocity avg 300. 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) 2.8.

Room 3. ACH Copy paste check (uses total or outside) 4.8. Window opening height (inches) 4. Co2 ambient (ppm) 418. Co2 test start (ppm) 2368. Co2 test end (ppm) 1106. Run time (min:sec) 13:00. Window air velocity avg 500. 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) 4.8.

Room Library. ACH Copy paste check (uses total or outside) 9.3. Window opening length (inches) 39. Window opening height (inches) 4. Co2 ambient (ppm) 420. Co2 test start (ppm) 2253. Co2 test end (ppm) 1408. Run time (min:sec) 4:00. Window air velocity max 735. Window air velocity min 207. Window air velocity avg 504. Window outside air volume (cfm) avg 546. Window cu-ft 1.08. Window cfm max 796. Window cfm min 224. Window cfm avg 546. wACH max 10.8. wACH min 3.0. wACH avg 7.4. wACH Copy paste check (does not match calcultated) 9.3.

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.