Advice to Banco de Valores (Argentina) as a collateral agent

Advice to Banco de Valores (Argentina) as an agent of guarantees in an issue of negotiable obligations with a maturity of 42 Months counted from the date of issuance and settlement for a nominal value of up to US $ 120,000,000, by Compañía General de Combustibles S.A. (Argentina), as an issuer and shareholder of GasAndes Chile.