The Inert Waste Facility operated by J Mould (Reading) Limited at Reading Quarry, is part of a larger recycling operation situated on a restored landfill site. ACS have been involved in a number of projects at the Site since 2011 including;
Monitoring & reporting of the environmental performance of the landfill
Routine monthly sampling and testing of the recycling facility dry screen material products
Geotechnical reporting on the proposed footprint of the recycled material washing plant
Further to the construction of a materials washing plant for the production of clean recycled aggregates in 2018, ACS were commissioned to prepare a WRAP Quality Protocol for the Production of Dry Screened and Washed Products from Inert Waste.
Recycled products washing & screening plant, with feedstock stockpile in background
The objective of the project was to prepare a document in accordance with the WRAP Quality Protocol – Aggregates from Inert Waste, which sets out the end-of-waste criteria for the production of such recycled materials. The Quality Protocol should:
Clarify the point at which waste management controls are no longer required
Provide users with confidence that the aggregate they purchase conforms to an approved industry specification defined in accordance with an appropriate European standard
Provide users with confidence that the aggregate is suitable for a use within a designated market sector(s) including conforming with the industry standard
and • Protect human health and the environment (including soil)
ACS have provided quality testing and materials consultancy to the construction industry since 1987. We provide a comprehensive range of aggregates and soils testing to British and European Standards, together with Standard Highways MCHW requirements. Mechanical, physical and chemical testing is conducted on a wide range of natural and recycled aggregates to ensure they are fit for purpose.
Our role as the WRAP Quality Protocol consultants was to advise the client how best to produce a document which would encompass all the requirements of the protocol, within a user-friendly format. In accordance with guidance, we recommended the document comprise the following key sections;
Factory Production Control (FPC)
Plant & Machinery
Records and Reports
Our WRAP Quality Protocol consultant met on Site with the client’s Compliance Manager and WAMITAB holder for treatment of non-hazardous and hazardous waste, for a detailed inspection of operations at the weighbridge, dry screened waste facility and aggregate washing plant. During discussions re existing procedures and processes, schematic diagrams were sketched out and details of the proposed dry screened, washed and blended products were recorded, as well as the intended markets for each of the products. Our in-house materials consultant recommended the testing schedule and frequency to which each of the products should be subjected on a monthly, quarterly and annual basis, to comply with the following specifications;
BS EN13139; 2002 Aggregates for mortar
BS EN12620; 2002 Aggregates for concrete
BS EN 13242; 2002 Aggregates for unbound materials
A draft of the document was issued to the Client for review and comment, to ensure the procedures and processes discussed in the site meeting had been correctly interpreted, prior to final issue.
Screener from wash plant with four recycled aggregate storage bays.
CHALLENGES The challenge of the project was in presenting the procedures and processes in a format that would be clear and concise to non-technical readers who may not be fully conversant with the more complex systems; e.g. the operating principles of the aggregate washing plant.
David Rowlands T: 01202 628662 E: firstname.lastname@example.org
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