New guidance: Livestock manure and silage storage infrastructure for agriculture (C759)

New free guidance is available on the selection, design, construction and maintenance of livestock manure and silage storage systems. This guidance draws on the experience of regulators, operators, designers and other stakeholders.

Managed by CIRIA, with ADAS appointed as report authors, the work involved close liaison with the Environment Agency and DEFRA as regulators and policy leads, respectively.

Over a hundred million tonnes of slurry and a million tonnes of silage effluent are produced each year, which represents a major water pollution threat unless adequately collected and stored.

The guidance will help farms optimise their investment, setting out the process that a farmer, designer and contractor may have to go through to ensure that legal requirements are met, the proposed approach is safe, cost-effective and meets the need of the farm.

The publications were produced in parallel with changes to the Control of Pollution (Silage, Slurry and Agricultural Fuel Oil) Regulations (SSAFO) expected in 2017. The guides replace CIRIA’s previous report “Farm waste storage: guidelines for construction” R126 (1992) which was produced following the introduction of SSAFO 1991

Tim Bailey, Environment & Business Senior Advisor (Agriculture - Regulation), Environment Agency, welcomed the publication stating that “it will help protect the environment and farmers’ investments through the adoption of the sensible practices set out in the document”.

Owen Jenkins, Director, CIRIA comments: "this demonstrates how CIRIA’s collaborative and multi-disciplinary approach can be used to ensure that practical, experience-based, guidance, reaches different asset owners. It also builds on CIRIA’s past work on asset management and pollution control."

The guides can be freely downloaded from