Advance Info 259

Preliminary Inquiry (PI) to identify and select companies that are interested in and capable to provide maintenance services for the roads of the ALMA Observatory, located close to San Pedro de Atacama, Chile.

The scope of the services include:

• road surface replacement;

• base material supply / transportation / preparation;

• road moistening/sweeping;

• snow clearance and rainwater drainage improvements;

• culverts maintenance;

• ...