ETL 04-4 Trenchless Technology (TT) for Crossing Air Force Pavements, with Change 1  

Date: 
03-31-2004

This ETL provides general information and guidance on the use of TT in constructing, reconstructing, rehabilitating, renovating, cleaning, inspecting, locating, and detecting anomalies around underground pipelines, utilities, fuel hydrant lines, or communication lines crossing under Air Force pavements, including runways, taxiways, aprons, overruns, and roadways.

Page(s): 
55