06 August 20151

EHN1 civil engineering project status (JULY)

Summary:• Updating of the activities carried out on-site (Done) in JULY • List activities on going (Next steps) and scheduled for AUGUST• Final consideration

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

(1) MICRO PILESVertical & inclined drilling along TT85: (100% completed)

EHN1 civil engineering project status (JULY)

Crown beam execution: (100% completed).

Done (1/4):

06 August 20152

TASK

COMPLETED

in JUNE

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

(2) DIAPHRAGM WALLS -73 panels-

Execution EAST side: (91% completed)

EHN1 civil engineering project status (JULY)

Execution SOUTH/WEST side: (67% completed)

Done (2/4):

06 August 20153

Guide walls allowing DW excavation: (100% completed)

Execution NORTH/WEST side: (100% completed)

~85% TOTAL PANELS

EAST

N/W

S/W

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Done (3/4):

(3) TECHNICAL GALLERY -70 meters-

EHN1 civil engineering project status (JULY)

Earthworks: (100% completed). Execution TG: (72% completed). Type 3 almost done. Type 1 startedBackfilling: (25% completed).

06 August 20154

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Done (4/4):

(4) PITS EXECUTION

EHN1 civil engineering project status (JULY)

Crown beam execution: (22% completed). Start with E side. Excavation first ties level: (22% completed).

06 August 20155

Excavation head DW level: (50% completed). Start with E and N/W side areas.

Excavation second ties level: (0% completed). Only for certain DW panels …Others

First ties level execution: (13% completed). Not yet in tension-step by step-

Task in “cohabitation” with the DWs last panels execution!!

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Next Steps: Activities scheduled for August

(2) DW: Whole panels completion within 1st half of August

(3) TG: Entire length, including connection with the EHN1, within end-August.

(4) PITS: Excavation/Execution crown beam + Excavation/Execution for ties installation East side portion

EHN1 civil engineering project status (JULY)

06 August 20156

04/08/2015 =>

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Final Consideration:

- New long-term schedule received updated with the current on-site situation.

- The compatibility/duration of the upcoming tasks will be assessed.

- CE tasks have to be carried out in parallel. Execution of the two pits launched before DWs panels completion to avoid further delays.

- Likely (but too early to say) CE first phase completion while metallic contractor are already on-site. Risky, but feasible thanks to the Consortium.

- CE Handover unchanged for the moment (Jul-2016)

- Next status of the works end-August.

EHN1 civil engineering project status (JULY)

06 August 20157

Extension of Building 887 - 26th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi