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PCB-Caulk Replacement Project Johnson Space Center Houston, TXWet method reduced exposure by minimizing overall respirable particulate release. Dry method didn't introduce delays for primer/caulk application. Removed caulks came in many forms, from dry powdery to tarry sticky. Varying textures were not sampled or packaged differently. During the course of the project, EPA modified recommended practices to include full containment for exterior caulk removal. Changes are ongoing. Initial recommendations were directed to school buildings. EPA is researching risks due to caulk. Exposure guidance lacking except for 2 of 209 PCB congeners. Work was safely completed on schedule and under budget.
Document ID
20110011633
Acquisition Source
Johnson Space Center
Document Type
Presentation
Authors
Young, William M. (NASA Johnson Space Center Houston, TX, United States)
Stanch, Penney M. (NASA Johnson Space Center Houston, TX, United States)
Molenda, William (Computer Sciences Corp. Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
May 16, 2011
Subject Category
Nonmetallic Materials
Report/Patent Number
JSC-CN-23715
Meeting Information
Meeting: American Industrial Hygiene Conference and Exposition 2011
Location: Portland, OR
Country: United States
Start Date: May 14, 2011
End Date: May 19, 2011
Distribution Limits
Public
Copyright
Public Use Permitted.

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