Ill. Admin. Code tit. 77, § 250.TABLE F – General Pressure Relationships and Ventilation of Certain Hospital Areas

Area Designation	Pressure Relationship To Adjacent Areas	Minimum Total Air Changes Per Hour Supplied To Room	All Air Exhausted Directly To Outdoors	Recirculation Within Room Units

Operating Room	+	12	Optional	No
Emergency Operating Room	+	12	Optional	No
Delivery Room	+	12	Optional	No
Soiled Workroom or Soiled Holding Room	-	10	Yes	No
Clean Workroom or Clean Holding Room	+	4	Optional	Optional
*Autopsy	-	10	Yes	No
*Toilet Room	-	10	Yes	No
*Bedpan Room	-	10	Yes	No
*Bathroom	-	10	Yes	No
*Janitors' Closet	-	10	Yes	No
*Sterilizer Equipment Room	-	10	Yes	No
*Food Preparation Centers	0	10	Yes	No
*Dietary Day Storage	0	2	Optional	No
*Laundry, General	0	10	Yes	No
Soiled Linen Sorting and Storage Rooms	-	10	Yes	No
*Anesthesia Storage	0	8	Yes	No

Symbol Key: + = Positive - = Negative O= Equal * = Recommended

(Source: Amended at 11 Ill. Reg. 10642, effective July 1, 1987)