EXCAVATION AND EARTH MOVING WORKS. RECLAMATION AND ENVIRONMENTAL PROTECTION. HIGHWAY SYSTEMS. SUPPLY AND INSTALLATION OF PROTECTION BARRIERS AND ANTI-NOISE SYSTEMS. QUALITY CERTIFICATE N ° 755 / SGQ / EA28 - 01 compliant with the UNI EN ISO 9001: 2008 standard for the EA 28 sector Nucleo Querce al Pino, 35 - 53043 CHIUSI (SIENA) - Tel. 0578 274565 - Fax 0578 274005 - e-mail: info@ferinatale.it CERTIFICATION OF QUALIFICATION FOR THE EXECUTION OF PUBLIC WORKS Cat. Class. Amounts OG1 III up to € 1,032,913.00 OG3 V. up to € 5.164.569,00 OG8 I V up to € 2,582,284.00 OG13 III up to € 1,032,913.00 OS1 III up to € 1,032,913.00 OS12 V. up to € 5.164.569,00 OS21 III up to € 1,032,913.00 OS34 I II up to € 1,032,913.00