09 July 20151

EHN1 civil engineering project status (JUNE)

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

Extension of Building 887 - 24th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

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

EHN1 civil engineering project status (JUNE)

Crown beam execution: (100% completed).

Done (1/4):

09 July 20152

TASK

COMPLETED

Extension of Building 887 - 24th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

(2) DIAPHRAGM WALLS -73 panels-

Execution EAST side: (91% completed)

EHN1 civil engineering project status (JUNE)

Execution SOUTH/WEST side: (50% completed)

Done (2/4):

09 July 20153

Guide walls allowing DW excavation: (87% completed)

Execution NORTH/WEST side: (100% completed)

~79% TOTAL PANELS

EAST

N/W

S/W

Extension of Building 887 - 24th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Done (3/4):

(3) TECHNICAL GALLERY -70 meters-

EHN1 civil engineering project status (JUNE)

Earthworks: (100% completed). After excavation of Type 3 portionExecution TG: (35% completed). Type 3 portion startedBackfilling: (25% completed). Type 2, facing TT85 enlargement

09 July 20154

Extension of Building 887 - 24th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Done (4/4):

(4) PITS EXECUTION

EHN1 civil engineering project status (JUNE)

Crown beam execution: (0% completed). Excavation first ties level: (0% completed).

09 July 20155

Excavation head DW level: (15% completed). Started with the East side

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

First ties level execution: (0% completed).-step by step-

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

Extension of Building 887 - 24th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi

Next Steps: Activities scheduled for July (2) DW: Prepare new lower guide walls close to EHN1 allowing panels excavation. Whole panels completion within end-July

(3) TG: Advancement on Type 3 portion. Work site preparation for Type 1 execution

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

EHN1 civil engineering project status (JUNE)

09 July 20156

02/07/2015

Extension of Building 887 - 24th 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-July.

EHN1 civil engineering project status (JUNE)

09 July 20157

Extension of Building 887 - 24th EHN1 Extension Integration Meeting N.Lopez – M.Manfredi