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Building Data Report

0. Space Type	BOS-School
1. Establishment Name	Grew Henry Elem
2. Address	address
3. City	Boston
4. State / Province	MA
5. Country	USA
6. Date	03/21/2021
7. Data Source	School District
8. Performed by	External Company
9. Company Name Address Contact	Cashins & Associates, Inc. 599 North Ave #8, Wakefield, MA 01880
10. Requirement Source	Boston School 3 ACH guideline
11. Technology	Natural Ventilation Windows and Limited Univent HVAC
12. Min ACH	3.3
13. Max ACH	6.5
14. Avg ACH	4.3
15. eACH	0
16. Filter MERV
17. Percent Outside Air	72.3
18. ON and Ventilates Entire Indoor Area	Yes
19. Vent Clearance min 6 ft	Yes
20. No of Rooms	6
21. sqft	1036.8
22. cuft	10368
23. No of Buildings	1
24. 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. % Outside air 64. Calculated air volume (cfm) outside 454. Calculated air volume (cfm) return 260. Combined air volume (cfm) 714. ACH outside 3.1. ACH merv filter return air 1.8. ACH total 4.8. ACH Copy paste check (uses total or outside) 3.1. Room 103. % Outside air 56. Calculated air volume (cfm) outside 434. Calculated air volume (cfm) return 347. Combined air volume (cfm) 781. ACH outside 3.6. ACH merv filter return air 2.9. ACH total 6.5. ACH Copy paste check (uses total or outside) 3.6. Room 202. % Outside air 82. Calculated air volume (cfm) outside 414. Calculated air volume (cfm) return 92. Combined air volume (cfm) 506. ACH outside 2.8. ACH merv filter return air 0.6. ACH total 3.4. ACH Copy paste check (uses total or outside) 2.8. Room 204. % Outside air 81. Calculated air volume (cfm) outside 425. Calculated air volume (cfm) return 99. Combined air volume (cfm) 524. ACH outside 2.9. ACH merv filter return air 0.7. ACH total 3.5. ACH Copy paste check (uses total or outside) 2.8. Room 201. % Outside air 75. Calculated air volume (cfm) outside 371. Calculated air volume (cfm) return 124. Combined air volume (cfm) 495. ACH outside 2.5. ACH merv filter return air 0.8. ACH total 3.3. ACH Copy paste check (uses total or outside) 2.5. Room 12. % Outside air 0. Calculated air volume (cfm) outside 745. Calculated air volume (cfm) return 0. Combined air volume (cfm) 745. ACH outside 4.3. ACH merv filter return air 0.0. ACH total 4.3. ACH Copy paste check (uses total or outside) 4.3 3.9.

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