Guide Schedule

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Guide Schedule

Research of sampling and testing rates for project tests listed in the Guide Schedule shows that the risk of either rejecting "good" material or accepting "bad" material ranges from 20 percent to 40 percent. Use this baseline for sampling and testing. Increase the frequency of testing for high-variability materials and when testing results do not meet specifications

Current Guide

May 2016

Previous Guides

March 2015
August 2010
November 2007
April 2005