The project that was subsequently drawn up clearly exceeded the previous dimensions. The plans included the extension of the existing runways, a 3300 m long runway, additional taxiways, the enlargement of the pier to 47 stands, a new terminal with finger dock, two multi-storey car parks, additional technical buildings, an airport railway station and a new hangar. In addition, there were various extensions and conversions of existing buildings. The costs were estimated at CHF 777.6 million (not including the air traffic control building and railway station). Since this project was hardly different from the "super airport" rejected in 1957, criticism was immediately voiced again by the "Protection Association of the Population around Zurich Airport" (SBFZ) and the community of Höri, which was located directly in the approach corridor. The SBFZ even demanded the resumption of the central airport concept that was dropped in 1945 - instead of Utzenstorf this time in the "Grosse Moos", with two runways jutting into Lake Neuchâtel. The supporters of the Zurich airport expansion argued primarily with the economic benefit. In order to take the wind out of the sails of aircraft noise criticism, the government and cantonal council are drafting an aircraft noise law (including a ban on night flights), which should be submitted to a referendum at the same time as the expansion bill. After the Cantonal Council had approved both bills in July 1970, the referendum was held on 27 September 1970. The proposal for expansion was approved by 103,867 votes to 64,192 (61.8% yes), the Aircraft Noise Act by 134,501 votes to 32,590 (80.5% yes). The following year, the Federal Assembly approved a federal contribution of 240.3 million. Construction work on the third stage also began in 1971. In 1973, Hangar III, Cargo Hall East, Car Park F and the General Aviation Centre were completed. In 1974 the "Werkhof" (work yard), an office building and multistorey car park E were added, in 1975 the apron, multi-storey car park B and Terminal B with finger dock, and in 1976 the Airport Plaza shopping and service centre located in multi-storey car park B. Additional costs were incurred due to numerous adjustments to the construction project. The additional credit of 25.8 million was accepted by Zurich voters on 7 December 1975 with 178,723 to 87,303 votes (67.2% yes). The canton supplemented this credit with ordinary and extraordinary budget credits from the building department. In March