1. LBT Q4 2007 Engineering Review DYB

2. 21-Dec-2007LBT Q4 2007 Engineering Review Highlights (Q4/2007) Currently in Commissioning Phase Currently in Commissioning Phase System is functioning and we are able to run the system with the MCS. System is functioning and we are able to run the system with the MCS. System senses swing arm configuration and performs the reconcile command and manual trim commands. System senses swing arm configuration and performs the reconcile command and manual trim commands. All hardware and electronics installed except bypass valves and insulation. All hardware and electronics installed except bypass valves and insulation. Bypass valves still need to be installed. Bypass valves still need to be installed. Pipe insulation work in progress Pipe insulation work in progress Final system and software tests are in progress. Final system and software tests are in progress. Current Completion Date is February/March, 2008. Slip from Nov 30 th due to scarcity of time on telescope. Current Completion Date is February/March, 2008. Slip from Nov 30 th due to scarcity of time on telescope.

3. 21-Dec-2007LBT Q4 2007 Engineering Review Open Issues Technical Technical Installation of bypass valves and insulation, and final shake down of PLC software. Installation of bypass valves and insulation, and final shake down of PLC software. Schedule Schedule Telescope time and impact on acceptance tests and any punchlist work. Telescope time and impact on acceptance tests and any punchlist work. Financial Financial None None Resource Resource Need ETS techs help to complete insulation due to competing priorities of mountain staff. Need ETS techs help to complete insulation due to competing priorities of mountain staff. PLC Programmer’s time needed to complete debugging of software. PLC Programmer’s time needed to complete debugging of software.

4. 21-Dec-2007LBT Q4 2007 Engineering Review Progress (Q4/2007) Procurement Procurement Bypass Valves, Level Sensors, Longer and Flowmeter Cable (Planned 2 nd week Nov.) (Completed 1 st week of Dec.) Bypass Valves, Level Sensors, Longer and Flowmeter Cable (Planned 2 nd week Nov.) (Completed 1 st week of Dec.) Installation Installation Insulation (Planned Oct) (Slip to January dependant on ETS help) Insulation (Planned Oct) (Slip to January dependant on ETS help) Bypass Valves, Level Sensors, and vent lines through cable wrap (Planned Nov) Level sensors and vent lines completed in Dec. Bypass valves will be installed Dec 27 th. Bypass Valves, Level Sensors, and vent lines through cable wrap (Planned Nov) Level sensors and vent lines completed in Dec. Bypass valves will be installed Dec 27 th. Commissioning Commissioning Software Tests (Planned Oct ) (Continuing into January) Software Tests (Planned Oct ) (Continuing into January) Commission Level Sensors and Calibrate Overflow Sensors (Planned Nov) (Completed in November.) Commission Level Sensors and Calibrate Overflow Sensors (Planned Nov) (Completed in November.) Acceptance Tests and Handover (Planned Nov) (Now planned to complete acceptance tests in February/March) Acceptance Tests and Handover (Planned Nov) (Now planned to complete acceptance tests in February/March) Documentation (Planned Nov) (Complete in January) Documentation (Planned Nov) (Complete in January)

5. 21-Dec-2007LBT Q4 2007 Engineering Review Progress Cont. (Q4/2007) Level sensor and support tube installed Vent Lines in Drape

6. 21-Dec-2007LBT Q4 2007 Engineering Review Planning (Q1/2008) Installation Installation Complete Insulation (January) Complete Insulation (January) Bypass Valves (Dec 27 th) Bypass Valves (Dec 27 th) Commissioning Commissioning Complete Software Tests (January) Complete Software Tests (January) Acceptance Tests and Handover (February/March) Acceptance Tests and Handover (February/March) Documentation (January) Documentation (January)