Removing Stains from Concrete Jan, 2008 By Craig E. Barnes, P.E., SECB In Articles, Engineer's Notebook This article is currently only available in PDF format, please click the link to the top right. About the author ⁄ Craig E. Barnes, P.E., SECBCraig E. Barnes, B. S., M. S., MBA P. E., S. E., was the Founding Principal of CBI Consulting Inc., Structural Engineers, Boston, MA Prev Quality Assurance of Structural Engineering Design, Part 1 Next Building Engineering & Construction