Designs of sloping or benching systems shall be selected from and be in accordance with tabulated data, such as tables and charts.
At least one copy of the tabulated data which identifies the registered professional engineer who approved the data, shall be maintained at the jobsite during construction of the protective system. After that time the data may be stored off the jobsite, but a copy of the data shall be made available to the Secretary upon request.
The tabulated data shall be in written form and shall include all of the following:
Identification of the parameters that affect the selection of a sloping or benching system drawn from such data;
Identification of the limits of use of the data, to include the magnitude and configuration of slopes determined to be safe;
Explanatory information as may be necessary to aid the user in making a correct selection of a protective system from the data.