Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Kilmer Baker St K1 3
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: 4.9 Max ACH: 20.7 Avg ACH: 9.6 eACH: 0
Filter MERV:
Percent Outside Air: 100
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 7 sqft: 716.9 cuft: 7169 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 B03. ACH Copy paste check (uses total or outside) 10. Window opening length (inches) 47. Window opening height (inches) 4. Co2 ambient (ppm) 405. Co2 test start (ppm) 2150. Co2 test end (ppm) 1300. Run time (min:sec) 4:00. Window air velocity max 1066. Window air velocity min 60. Window air velocity avg 452. Window outside air volume (cfm) avg 590. Window cu-ft 1.31. Window cfm max 1392. Window cfm min 78. Window cfm avg 590. wACH max 15.9. wACH min 0.9. wACH avg 6.7. wACH Copy paste check (does not match calcultated) 10.

Room 104. ACH Copy paste check (uses total or outside) 9.5. Window opening length (inches) 47. Window opening height (inches) 4. Co2 ambient (ppm) 396. Co2 test start (ppm) 2304. Co2 test end (ppm) 1412. Run time (min:sec) 4:00. Window air velocity max 1329. Window air velocity min 568. Window air velocity avg 687. Window outside air volume (cfm) avg 897. Window cu-ft 1.31. Window cfm max 1735. Window cfm min 742. Window cfm avg 897. wACH max 12.7. wACH min 5.4. wACH avg 6.6. wACH Copy paste check (does not match calcultated) 9.5.

Room 206. ACH Copy paste check (uses total or outside) 8.5. Window opening length (inches) 47. Window opening height (inches) 4. Co2 ambient (ppm) 396. Co2 test start (ppm) 2147. Co2 test end (ppm) 1257. Run time (min:sec) 5:00. Window air velocity max 962. Window air velocity min 216. Window air velocity avg 525. Window outside air volume (cfm) avg 685. Window cu-ft 1.31. Window cfm max 1256. Window cfm min 282. Window cfm avg 685. wACH max 9.1. wACH min 2.0. wACH avg 5.0. wACH Copy paste check (does not match calcultated) 8.5.

Room 206*. ACH Copy paste check (uses total or outside) 4.9. Window opening length (inches) 47. Window opening height (inches) 4. Co2 ambient (ppm) 396. Co2 test start (ppm) 2082. Co2 test end (ppm) 1197. Run time (min:sec) 9:00. Window air velocity max 561. Window air velocity min 124. Window air velocity avg 302. Window outside air volume (cfm) avg 394. Window cu-ft 1.31. Window cfm max 732. Window cfm min 162. Window cfm avg 394. wACH max 5.3. wACH min 1.2. wACH avg 2.8. wACH Copy paste check (does not match calcultated) 4.9.

Room 1st Fl. Rsrce Rm. ACH Copy paste check (uses total or outside) 8.1. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 418. Co2 test start (ppm) 1907. Co2 test end (ppm) 1082. Run time (min:sec) 6:00. Window air velocity max 547. Window air velocity min 82. Window air velocity avg 337. Window outside air volume (cfm) avg 337. Window cu-ft 1.00. Window cfm max 547. Window cfm min 82. Window cfm avg 337. wACH max 3.9. wACH min 0.6. wACH avg 2.4. wACH Copy paste check (does not match calcultated) 8.1.

Room 2nd Fl. Tchrs Rm. ACH Copy paste check (uses total or outside) 20.7. Window opening length (inches) 29. Window opening height (inches) 4. Co2 ambient (ppm) 418. Co2 test start (ppm) 2725. Co2 test end (ppm) 1577. Run time (min:sec) 2:00. Window air velocity max 1183. Window air velocity min 365. Window air velocity avg 551. Window outside air volume (cfm) avg 444. Window cu-ft 0.81. Window cfm max 953. Window cfm min 294. Window cfm avg 444. wACH max 27.4. wACH min 8.5. wACH avg 12.8. wACH Copy paste check (does not match calcultated) 20.7.

Room 303. ACH Copy paste check (uses total or outside) 5.7. Window opening length (inches) 36. Window opening height (inches) 4. Co2 ambient (ppm) 415. Co2 test start (ppm) 2300. Co2 test end (ppm) 1485. Run time (min:sec) 6:00. Window air velocity max 456. Window air velocity min 14. Window air velocity avg 236. Window outside air volume (cfm) avg 236. Window cu-ft 1.00. Window cfm max 456. Window cfm min 14. Window cfm avg 236. wACH max 3.8. wACH min 0.1. wACH avg 2.0. wACH Copy paste check (does not match calcultated) 5.7.

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.