Larry, Our local ordinance for secondary containment for hazardous material storage (which would include haz waste) states: 1. The containment material is compatible with the stored material (it won't be degraded by a spill). 2. All materials stored in the same secondary containment are compatible (they won't chemically react with each other). 3. The volume of the secondary containment needs to be 110% of the volume of a single container or, if there are multiple containers, the LARGER of either 150% of the largest container volume or 10% of the total volume of all the containers. Dan --------------------------------- Dan Blunk PhD, REA 831.459.3541 blunk**At_Symbol_Here**ucsc.edu Environmental Programs Manager Environmental Health & Safety Office University of California Santa Cruz -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of Larry D. McLouth Sent: Thursday, April 22, 2004 12:38 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] Capacity for Secondary Containment A number of people have asked what the requirements are for secondary containment at SAAs. I have not found a specific "requirement". A guideline I've heard is that secondary containment capacity should be 110% of the largest container or 10% of the aggregate volume of all containers. What do you use at your facilities? Any thoughts or comments? Thanks Larry
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