Physically check subgrade for moisture and density Periodically check mixer truck tickets for old concrete. Concrete must not be over 90 minutes old, nor over 90 degrees in temperature. Bad material will not be accepted. A sealer must be used on sidewalks. Catch basins, scuppers, and headwalls will be inspected before pouring.
Subgrade tolerance is inch.
ABC tolerance is inch. Mix must be EVAC approved. Concrete edges shall be tacked. Mix must be EVAC approved.