ILLINOIS DEPARTMENT OF
TRANSPORTATION
BUREAU OF MATERIALS & PHYSICAL RESEARCH
PROJECT PROCEDURES GUIDE (PPG)
The Bureau of Materials and Physical Research's Project Procedures
Guide (PPG) is used as a resource for determining reasonable inspection
procedures and sampling frequencies for materials used in highway
construction. This Manual seeks to establish materials sampling and
testing uniformity throughout the state by providing sampling schedules
which list the minimum frequencies at which samples and measurements
shall be taken by project, plant, and District personnel.
This Manual applies to all projects constructed on the State system
and all Local Agency improvement projects with federal, state, or
MFT funds. Specific exceptions to this Manual for Local Agency work
are indicated in the current Local Roads and Streets Manual(s) or by
circular letter. | 
