Construcciýn de sistema de alcantarillado consistente en la instalaciýn de 1650 m.l. de tuberýa de 20 cms de diýmetro con junta hermýtica, 32 pozos de visita tipo comýn y 31 descargas domiciliarias, en la localidad de Colonia Progreso (El Dorado), municipio de Allende, en el Estado de Chihuahua

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