LONDON, Nov 5 (Reuters) - Chevron ( CVX ) said on

Wednesday it was nearing a final investment decision for a

potential capacity expansion of the Leviathan reservoir off

Israel's Mediterranean coast.

In August, the Leviathan natural gas field signed the

largest export agreement in Israel's history, worth up to $35

billion, to supply gas to Egypt.

Chevron ( CVX ) holds 40% of Leviathan and is the field's operator.