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Building Data Report

0. Space Type	BOS-School
1. Establishment Name	Irving Washington Middle
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	2
13. Max ACH	3.7
14. Avg ACH	2.8
15. eACH	0
16. Filter MERV
17. Percent Outside Air	27.2
18. ON and Ventilates Entire Indoor Area	Yes
19. Vent Clearance min 6 ft	Yes
20. No of Rooms	5
21. sqft	725.4
22. cuft	7254
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 208. % Outside air 27. Calculated air volume (cfm) outside 136. Calculated air volume (cfm) return 373. Combined air volume (cfm) 509. ACH outside 1.0. ACH merv filter return air 2.7. ACH total 3.7. ACH Copy paste check (uses total or outside) 0.9. Room 204. % Outside air 30. Calculated air volume (cfm) outside 85. Calculated air volume (cfm) return 197. Combined air volume (cfm) 282. ACH outside 0.6. ACH merv filter return air 1.4. ACH total 2.0. ACH Copy paste check (uses total or outside) 0.6. Room 303. % Outside air 30. Calculated air volume (cfm) outside 83. Calculated air volume (cfm) return 197. Combined air volume (cfm) 280. ACH outside 0.6. ACH merv filter return air 1.4. ACH total 2.0. ACH Copy paste check (uses total or outside) 0.6. Room 310. % Outside air 33. Calculated air volume (cfm) outside 113. Calculated air volume (cfm) return 230. Combined air volume (cfm) 343. ACH outside 1.1. ACH merv filter return air 2.2. ACH total 3.3. ACH Copy paste check (uses total or outside) 1. Room 101. % Outside air 0. Calculated air volume (cfm) outside 0. Calculated air volume (cfm) return 450. Combined air volume (cfm) 450. ACH outside 0.0. ACH merv filter return air 3.7. ACH total 3.7. ACH Copy paste check (uses total or outside) 0.

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