2General land spreading conditions 2 Land spreading refers to any waste or wastewater application onto or into agricultural soil. Only waste or wastewater beneficial to the soil or crop nutrition can be spread. By their nature, characteristics and amount, the handling and application of the waste or wastewater due to be spread should not affect, directly or indirectly, human and animal health, crop quality and plant health, the quality of soil and aquatic environment, and nuisances should be restricted to a minimum (art. 36 of the ministerial order of 02/02/98).
Any land spreading activity is subject to a preliminary study, included in the impact assessment, demonstrating the harmlessness (within the conditions of use) and agricultural relevance of the wastewater or waste, the soil’s ability to receive it, land spreading scope and implementation procedure. This study should justify the compatibility of the land spreading process with the environmental constraints identified or existing planning documents.
The pH of the wastewater or waste ranges from 6.5 to 8.5. However, different values can be selected subject to favourable conclusions in the preliminary study.
Waste or wastewater should not be spread onto soil with a pH before use of under 6, unless the three following conditions are simultaneously fulfilled:
Permanent waste or wastewater storage structures are built to cope with periods when land spreading is either impossible or prohibited by the preliminary study. These structures must not cause any nuisances.
Land spreading is prohibited:
Decree no. 97-1133 of 8 December 1997 on the land spreading of wastewater treatment sludge.
Order of 8 January 1998 stipulating the technical requirements applicable to the land spreading of sludge on agricultural soil.
Section IV of the order of 2 February 1998 relative to the water withdrawal and consumption as well as different types of emissions of permit holding classified installations for environmental protection (OJ of 3 March 1998).
Circular of 16 March 1999 relative to the legislation on the land spreading of sludge from municipal wastewater treatment plants