Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Lyndon Patrick Pilot 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: 4.3 Max ACH: 25.1 Avg ACH: 9.4 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: 506.9 cuft: 5069 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 101. ACH Copy paste check (uses total or outside) 4.3. Window opening length (inches) 37. Window opening height (inches) 4. Co2 ambient (ppm) 419. Co2 test start (ppm) 2201. Co2 test end (ppm) 1419. Run time (min:sec) 8:00. Window air velocity max 814. Window air velocity min 137. Window air velocity avg 308. Window outside air volume (cfm) avg 317. Window cu-ft 1.03. Window cfm max 837. Window cfm min 141. Window cfm avg 317. wACH max 6.1. wACH min 1.0. wACH avg 2.3. wACH Copy paste check (does not match calcultated) 4.3.

Room 200. ACH Copy paste check (uses total or outside) 7.9. Window opening length (inches) 37. Window opening height (inches) 4. Co2 ambient (ppm) 439. Co2 test start (ppm) 1782. Co2 test end (ppm) 1049. Run time (min:sec) 6:00. Window air velocity max 629. Window air velocity min 59. Window air velocity avg 299. Window outside air volume (cfm) avg 307. Window cu-ft 1.03. Window cfm max 646. Window cfm min 61. Window cfm avg 307. wACH max 4.9. wACH min 0.5. wACH avg 2.3. wACH Copy paste check (does not match calcultated) 7.9.

Room 201A. ACH Copy paste check (uses total or outside) 25.1. Window opening length (inches) 37. Window opening height (inches) 4. Co2 ambient (ppm) 439. Co2 test start (ppm) 1981. Co2 test end (ppm) 1108. Run time (min:sec) 2:00. Window air velocity max 1063. Window air velocity min 217. Window air velocity avg 666. Window outside air volume (cfm) avg 685. Window cu-ft 1.03. Window cfm max 1093. Window cfm min 223. Window cfm avg 685. wACH max 17.1. wACH min 3.5. wACH avg 10.7. wACH Copy paste check (does not match calcultated) 25.1.

Room 203. ACH Copy paste check (uses total or outside) 6.2. Window opening length (inches) 37. Window opening height (inches) 4. Co2 ambient (ppm) 400. Co2 test start (ppm) 2206. Co2 test end (ppm) 1377. Run time (min:sec) 6:00. Window air velocity max 1247. Window air velocity min 89. Window air velocity avg 583. Window outside air volume (cfm) avg 599. Window cu-ft 1.03. Window cfm max 1282. Window cfm min 91. Window cfm avg 599. wACH max 9.7. wACH min 0.7. wACH avg 4.6. wACH Copy paste check (does not match calcultated) 6.2.

Room 219. ACH Copy paste check (uses total or outside) 5.4. Window opening length (inches) 37. Window opening height (inches) 4. Co2 ambient (ppm) 400. Co2 test start (ppm) 2170. Co2 test end (ppm) 1342. Run time (min:sec) 7:00. Window air velocity max 702. Window air velocity min 49. Window air velocity avg 275. Window outside air volume (cfm) avg 283. Window cu-ft 1.03. Window cfm max 722. Window cfm min 50. Window cfm avg 283. wACH max 5.4. wACH min 0.4. wACH avg 2.1. wACH Copy paste check (does not match calcultated) 5.4.

Room 119. ACH Copy paste check (uses total or outside) 14.6. Window opening length (inches) 42. Window opening height (inches) 4. Co2 ambient (ppm) 439. Co2 test start (ppm) 1960. Co2 test end (ppm) 1173. Run time (min:sec) 3:00. Window air velocity max 151. Window air velocity min 66. Window air velocity avg 113. Window outside air volume (cfm) avg 132. Window cu-ft 1.17. Window cfm max 176. Window cfm min 77. Window cfm avg 132. wACH max 2.1. wACH min 0.9. wACH avg 1.6. wACH Copy paste check (does not match calcultated) 14.6.

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.