HAUC/RAUC MoU - Wrap

Materials Resource Efficiency in Street WorksMaterials Resource Efficiency in Street WorksUtility HAUC/RAUC Industry Memorandum Agreementof Understanding

Materials Resource Efficiency in Street WorksAbout this MemorandumThis memorandum of understanding sets outthe Local Authority and Regional & NationalHAUC/RAUC commitment to:■ approving and encouraging the use ofrecycled and stabilised materials instreet works where they meet specifiedperformance and quality requirements + ;■ supporting the Street Works Community(Utility Companies, Contractors, LocalAuthorities and Material Suppliers)in increasing the use of recycled andstabilised materials, and reducing thewaste arisings sent to landfill;■ using trial data and case study informationto inform the approval of recycled andstabilised materials in street works; and■ pro-actively sharing knowledge on the useof recycled and stabilised materials.BackgroundIn 2005, it was estimated that the utilitiessector generated about 4.8 million tonnes oftrench excavation waste and about 2.5 milliontonnes of this was landfilled # , enough to fillthe Millennium Stadium.Recycling this waste for use in street workscan divert significant quantities of materialsfrom landfill and will help to reducecarbon emissions.Information on the use of recycled andstabilised materials is provided in UKHighways Authority and Utilities Committee- HAUC (UK) - Specification for theReinstatement of Openings in Highways 1 .Modern performance specifications, such asthose in the Specification for Highway Works,differentiate between materials based ontheir performance (such as high resistanceto polishing required in road surfaces) ratherthan by their type (for example, recycledversus primary aggregates).BenefitsEncouraging the adoption of waste avoidancetechniques (such as trenchless technologyand first time permanent reinstatement) andthe use of recycled and stabilised material:■ demonstrates integrated action byLocal Authorities, bringing together themanagement of street works with localwaste policy and sustainability initiatives;■ reduces the time that street works take,for example, through the use of firsttime permanent reinstatement and localrecycling hubs, reducing the disruptionassociated with street works; and■ avoids the associated local air and noisepollution by reducing lorry movements,either by:- not generating waste to be moved;- only moving waste arisings shortdistances to local hubs for recycling; and- avoiding bringing primaryreinstatement materials from distantquarries to urban centres.HAUC (UK)– Advice Note No. 1Recycled materials in reinstatementsare permitted by the Specification for theReinstatement of Openings in Highways; asthey are specified in the Series 800 of theSpecification for Highway Works.HAUC (UK) has recently released Advice Note1, to clarify the use of stabilised materials(also known as hydraulically bound mixtures).Advice Note 1 confirms that:■ provided that the stabilised materialcomplies with Series 800 of theSpecification for Highway Works, it can beused without being trialled.■ when a material has gained approvalfrom one authority (and the results andaudit trail are available), other Authoritiescannot withhold permission to use thematerial unless there are reasonableengineering reasons for doing so.+ In the UK Highways Authority and Utilities Committee - HAUC (UK) - Specification for the Reinstatement of Openings in Highways and Advice Note 1# Identifying opportunities for recycling of excavated spoil from utility works in local authority areas, and promoting the use of recycled materials throughgood practice’, WRAP, 2005. Available via www.wrap.org.ukAvailable from the Department for Transport website – www.dft.gov.ukAvailable from the Highways Agency website – www.highways.gov.uk

Materials Resource Efficiency in Street WorksThe Suite of DocumentsUtilityContractorAgreementUtilityIndustryAgreementGood Practice GuideRegionaland HAUC/RAUCNationalHAUC/RAUC MemorandumMemorandumof Understandingof UnderstandingCouncillor’s Briefing NoteLocal Authority Inspector's Briefing Note Database of Street Works RecyclingUnited Utilities - CBEM3 trials in LeedsThe CBEM3 (cement-bound excavatedmaterial) pilot trial was set up by NationalGrid at Sheepscar, Leeds, in August 2004,and continues to operate successfully underUnited Utilities.The current trials of CBEM3 in WestYorkshire are intended to prove CBEM3 asa long-term, commercially and practicallyviable reinstatement solution for muchlarger workloads in a relatively smallgeographical area.Source: United Utilities Welsh HAUC – Approved materialsWelsh HAUC have published tables ofapproved materials, including materialsusing recycled and secondary aggregates.The tables include approved materialscontaining blastfurnace slag and recycledasphalt.These materials, along with many others,are also allowed by the Highways Agency’sSpecification for Highway WorksSource: Welsh HAUC website, www.welshhauc.org.ukThis is one of a suite of documents aimedat delivering a step change in the levelsof recycled materials used, and the wastelandfilled from street works.Skanska and National Grid - Trials inNorth LondonSkanska and National Grid have beenconducting a trial into using a materialknown as SMR Premix’d in the HaveringCouncil area of North London.Havering Council had various concernsregarding the material which were allayedby the Skanska/National Grid Local TrialManagement Team, and the trial was allowedto go ahead. Following the successful trialin Havering, approval has been gained withvarious other Local Authorities including:■ Essex County Council■ Camden Council■ Enfield Council■ Brent Council■ Southend on Sea Borough Council■ Islington CouncilSource: SkanskaBarhale Construction – ‘Trenchmod’ in theBorough of CamdenBarhale Construction used ‘Trenchmod’ – aproprietary system for recycling materials– on a project in Mansfield Road, Camden,to modify the trench arisings for futurereinstatements. Arisings were taken to the‘Trenchmod’ plant located on a ThamesWater site at Lea Bridge, Hackney. Theprocessed material was then transportedback to Camden as and when required.The performance history of the product andprevious Utility Companies’ usage has ledto an outright conditional acceptance fromthe London Borough of Camden, where‘Trenchmod’ may be used as a backfill/Type 1subbase alternative.Source: ‘Recycled and Stabilised Materialsin Trench Reinstatement’, www.wrap.org.uk/construction

Materials Resource Efficiency in Street WorksThis agreement was developed by:This agreement was developed by:HAUC CSS NJUGThis agreement was developed by:This agreement was developed by:HAUC CSS NJUGHAUC CSS NJUGFront cover photograph: Volumetric truck used to batch recycled material for the manufacture of HBM,photographFrontcourtesycover photograph:of Clancy Docwra.Volumetric truck used to batch recycled material for the manufacture of HBM,photograph courtesy of Clancy Docwra.Front cover photograph: Volumetric truck used to batch recycled material for the manufacture of HBM, photograph courtesy of Clancy Docwra.Disclaimer Front Disclaimer cover photograph: Volumetric truck used to batch recycled material for the manufacture of HBM,This document photograph This document has courtesy been has published been of Clancy published Docwra. in good in good faith faith by WRAP by WRAP with with the the help help of of Scott Wilson, and and neither neither WRAP WRAP nor norDisclaimer Scott Wilson Scott shall Wilson incur shall any incur liability any liability for any for action any action or or omission arising out of any reliance being placed placed on on the theThis document has document Disclaimerbeen document by published any organisation by any in organisation good other faith or other person. by person. 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Any organisation or other personany) to take any) Wilsonin to respect take shall in respect incur anyof any of initiative, any liability initiative, for anyproposal, proposal, action oror other or omission other involvement arising out with of any any reliance procurement being placed process, onprocess, or the beforebeforein receipt of this document should take their own legal, financial and relevant professional advice when considering what action (if any) to take inplacing anyplacingrelianceany by reliance any organisationon anythingon anything or othercontainedcontained person.therein.therein. 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