658 Tree Root Aeration

1. Specification:

Item 658.02 C&MS

2. Sampling and/or Inspection Requirements:

Furnish aggregate for tree root aeration and protection consisting No. 4 or 467 limestone or gravel with a maximum sodium soundness loss of 15 percent.  Verify that the aggregate source is part of the ODOT Certified Supplier List (S1069).  Refer to OMMís website at



Furnish 4 " (100 mm) pipe conforming to 603 Type E conduit.

Furnish embankment conforming to Item. 203.

3. Method of Tests:

Item 603 Type E conduit