Alcoa Corporation · NYSE:AA
Alcoa — Corporate Update (January 2010)
11 slides from Alcoa's corporate update, January 2010
Slide 1: Project Update – Engineering Studies
Project Update – Engineering Studies Greg Ott, Director, Hydro and Smelter Development, Alcoa
Slide 2: 2009 Engineering Study Update
2009 Engineering Study Update Alcoa is working with local and international experts to conduct engineering studies for the Project PB Power GMS Asiaq EFLA Others
Slide 3: Hydro Studies
Hydro Studies Geotechnical Borings Deep boreholes (~400 m) drilled near the power house locations to measure rock quality: • Rock foliation and joint patterns • Stress • Permafrost depth • Water pressure Drilling activity at Northern hydro site Borings drilled at the dam sites to measure shallow per
Slide 4: Hydro Studies (continued)
Hydro Studies (continued) Borrow Source Testing In 2009, field crews used a soil auger to drill 20 test pits in the borrow sources identified in 2008. Data collected: • depth to rock • permafrost • rock quality • material strength and stiffness of material The testing will confirm excavation assumpt
Slide 5: Hydro Studies (continued)
Hydro Studies (continued) Geologic Mapping Mapping of joint sets, faults, intrusions, and rock types was completed in selected project areas. Bathymetry Bathymetry (water depth and seafloor terrain) was recorded in the fjord outlets at the northern and southern hydro sites, the inlet lake at the nor
Slide 6: Smelter Studies
Smelter Studies Geotechnical Borings and Probes 14 shallow borings and probes were completed within the proposed foundation area of the smelter and along the proposed pier. Additional Tests on 2008 Rock Core The rock core from the 2008 smelter borings was tested to demonstrate that the rock at the s
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Slide 10: Transmission Line Studies
Transmission Line Studies April 2009 field work: measured snow depths identified avalanches that occurred near the proposed alignments August 2009 field work: refined the alignment identified the best positions for the towers estimated the permafrost locations investigated road alignments needed for
Slide 11: 2010 Possible Studies
2010 Possible Studies Hydro Geophysics Geophysical surveys at the dams and tunnel river crossings are planned for September/October 2010 Smelter Access Road Investigation A study to determine the best alignment for the smelter access road will be completed in summer 2010. Others