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# Title
 1  2009 - 10/13/2009 - Protective system requirements for excavations that will not be entered by employees.
 2  2004 - 09/30/2004 - Permissibility of using average excavation depth to determine protective system requirements for the excavation.
 3  2003 - 01/16/2003 - Registered professional engineer approval requirements for manufactured trench protection systems deeper than 20 feet.
 4  1999 - 10/15/1999 - Excavations may be shored with wooden shoring.
 5  1985 - 06/26/1985 - Slope should be measured from the five-foot level to grade.

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