rfb_13199_for_info_only_20-SDG&E_transmission_TL_6926_permanent_UG_electric_relocation_jack_and_bore_asbuilt.pdf

This is an As-Built documentation file for an electric transmission line relocation project conducted by SDG&E (San Diego Gas & Electric). The project involved permanent underground electric relocation work utilizing jack and bore construction methodology for transmission line 6926. The documentation details specific construction activities completed during the project, including casing installation and abandonment procedures at station 164+78, where a casing was advanced 126 feet before being grouted with an 8-sack sand mix, with surrounding voids also filled to ensure structural integrity.

The file provides technical specifications for pit backfill procedures, which were completed using a 2-sack slurry mix containing a 2% calcium chloride admixture for both the sending and receiving pits. This documentation serves as a record of completed work scope items and construction methodologies employed during the permanent underground electric relocation jack and bore operation, confirming adherence to the project specifications and construction standards for SDG&E transmission infrastructure.