Glossary and abbreviations

(NGV) Natural gas consists mainly of methane. Compressed at 200 bar, it is used as an alternative fuel in gaseous form. The combustion of natural gas produces no sulfur, lead or particles, and only a little nitrogen oxide. It does not generate black smoke or odors.
Natural gas fuel burns more slowly than other hydrocarbons. It also significantly reduces vibrations, thereby reducing engine noise. The noise level is lowered by about 4 decibels, which is the equivalent of half the noise generated by a diesel engine. Methane can be extracted from natural reserves or produced from biomass.
In the spring of 2002, Veolia Environmental Services signed a contract with the Paris authorities to introduce natural gas powered waste collection vehicles. This is a first in France and an innovative experience for Paris, illustrating the city's determination to protect the environment. It also represents a good business opportunity for Veolia Environmental Services.

Non-governmental organization. In the United Nations sense, NGOs are groups of volunteers organized locally, nationally or internationally. They work in the humanitarian arena, inform governments of citizens' concerns, encourage people to participate in politics at community level, etc.

All non-inert and non-hazardous waste generated by companies, manufacturers, retail outlets, self-employed tradesmen and service providers. It includes scrap iron and other metals, paper and cardboard, glass, textiles, wood and plastics.