Presentation on theme: "Site Waste Management Plans and the Code"— Presentation transcript:
1Site Waste Management Plans and the Code OutlineWho is WRAP?Why reduce waste?Who’s doing what?What constructors can doWhat support is availableDr Mervyn Jones, WRAP
2WRAP’s seven programmes WRAP’s construction focus:Waste minimisation and managementMaterials recyclingProcurement - (Recycled Content)
3Materials resource efficiency Overall material consumption by construction industry (>400 Mt per year)M tonnesOverall waste generated (>150 Mt per year)As stated previously, construction is one of the biggest users of materials in the economy, consuming approximately 420 million tonnes of materials each year. It also generates some 106 million tonnes of inert construction, demolition and excavation waste each year, only half of which is currently recycled or reclaimed back into construction. And an additional 20-30M tonnes of non-inert non-hazardous waste with very low recovery rates.Use of construction products and materials that have above average levels of recycled content will help improve this situation.Quantity of construction and demolition waste generated (~100 Mt per year inerts)controlled waste (~20 Mt per year)Waste construction materials that are recycled / re-used (~60 Mt per year)
4Materials efficiency as part of sustainable construction Sustainability goalsGreen GuideDemolition ProtocolEnergyMaterialsWaterMaterial selectionWaste managementEcopointsUse less materialWaste avoidance and minimisationEfficient use of finite natural materialsThe 3 major areas where a construction project can improve its environmental impact are efficient use of energy, water and materials. This slide shows the different dimensions of materials efficiency.This diagram depicts the 2 main aspects of materials efficiency:- reducing the use of finite natural resources- reducing the amount of wasteRecycling both reduces waste volumes going to landfill and, provided the sector uses products/ materials with recycled content, substitutes for virgin materials.According to WWF, we need a two-thirds’ reduction in consumption of fossil fuels and virgin materials to achieve a sustainable and globally equitable level of resource use – termed One Planet Living.Material selection – i.e. which specifications used and which specific products fulfil these specifications. These two elements are a similar but different and are managed in different ways.Tools such as the Green Guide to Specification, are designed to help in selection of specifications that have low environmental impact.Once the design specifications have been determined then it is possible to further enhance resource efficiency of the project by ensuring that the specific products used to fulfil the specification have higher levels of recycled content or are from a sustainably managed renewable source.High levels of recycled content can come through use of onsite or local aggregates and demolition materials, or from use of ‘new’ products that use recycled materials as feedstocks.Waste management – this includes:Designing out waste wherever possible (e.g. use of off-site manufacturing)Good site practices, with careful storage and management of waste- Segregation of wastes for reclaim or recycling (onsite or at a dedicated facility)Returning surplus materials for reuseUse local C&D waste / reclaimed productsReturn surplus materialsUse products with higher recycled contentSegregate, recover, reclaim and recycleMinimising environmental damageDTI Site Waste Management PlansSpecification of materials with low enviro. impactRC Toolkit
5Code for Sustainable Homes (2006) 'Where the site waste management plan includes procedures and commitments that minimise waste generated on site in accordance with WRAP/Envirowise guidance'Now an additional credit in the Code (published Dec 2006)e.g. Ensure there is a site waste management plan in operation which requires the monitoring of waste on site and the setting of targets topromote resource efficiency.ConstructionEITHERwaste Where the site waste management plan includes procedures and commitments that minimise waste generated on site in accordancewith WRAP/Envirowise guidance (0.9 credits)ORWhere the above is achieved and the plan includes procedures and commitments to sort, reuse and recycle construction waste eitheron site or through a licensed external contractor (1.8)
6Waste Management Hierarchy Reduce the generation of wasteReuse materials for the same or a different purposeRecycle the materials to recover valueDispose, using the best practical environmental optionFocus should be clearly on the potential to reduce waste before it arises.Also consider energy recovery (downcycling) as further option between recycling (added value) and disposal to landfill.
7True Cost of Waste e.g. 8 cu yd skip Skip hire £120 The original purchase price and transportation costs of the materials+The cost of their handling, storage, transport and disposalThe loss of income from not salvaging the materialse.g. 8 cu yd skipSkip hire £120Labour to fill skip £163Cost of materials put in skip £1095TOTAL TRUE COST £1378(Source: AMEC)AMEC – Darlington Study
8Example – Concrete Block True cost of wasteExtraction of raw material for blockDelivered to point of fixEnergy for block manufactureBroken whilst being laidStored for transportNot just environmental impact in terms of landfill but also a significant reduction in carbon footprint when you consider the embodied energy at all stagesTaken to waste containerDelivered to siteDisposed ofStored on siteEmbodied energy at all stages!
9Potential savings Case studies have shown savings of: 3% of build costs20% of materials on site0.2% of total project costs saved through segregation(Source: Taylor Woodrow)90%
10Residential Waste Streams The top five waste streams for residential, in terms of arisings are:Concrete & bricksPackagingTimberPlasterboardMiscellaneousMiscellaneous = insulation, plastics etc
11Waste per average newbuild house Typical 80m2 housing unit =15.36m3 wasteApprox 5 skips9.6 tonnes£6,715Per metre squared equatesto:0.192 m3skips120kg waste£84/m295 Flats Social Housing Flats in Edinburgh savings of £4,210 per unitBeckenham (private sector) 75 homes savings of £7000 per unit
13£90 £90 £0 £258 £90 Turn this into this….. SLIDE Build After 10 October 2007 EA will require all non-hazardous waste to be pre-treated before going to landfill – at its most basic this means separating waste to some degree.Clearly not all sites have this much space for waste containers but you do have to ensure safe provision for controlling waste on site but the slide illustrates two points:Think beyond standard 8yd skips in terms of range waste container solutions on-site – Big bags, wheelie bins (240, 660l) and 5, 8, 12, 26 yd skips.Separating waste can result in significant variations (and savings for materilas disposal.Consider:Simons Construction 3 skip principle or 20: 40: 60 rule:Total waste down 20%Waste cost of disposal down 40%Total waste to landfill by 60%£90£90£0£258£90
14Waste Segregation e.g. Simons Construction Saving of £3,035 Housing development (30 skips /week):Mixed waste system = £4,970Segregated waste = £1,935Ca 60% savinge.g. Simons ConstructionSaving of £3,035
15SWMP format 3 elements: Guidance covers: Guidance Checklist (35 questions)Data recording sheetGuidance covers:Waste and legislationDuty of careWaste minimisationTraining materialsReporting requirementsCHECKLISTUseful ‘aide memoir’ for developing and implementing a SWMP‘Questions to consider’ based on project stages:PolicyProcurementProject PlanningSite OperationsProvides clear audit trail and record for actionsData SheetExample of data collection sheetRecord the types and quantities of waste arising and their managementUse to record and monitor performance and targetsRecord waste movements, helping with Duty of Care requirementsStep 1 – Responsibility & developmentStep 2 – Types & quantities of waste arisings throughout the work programme/plan (setting targets)Step 3 – Waste minimisation & management optionsStep 4 – Compliance with Duty of CareStep 5 - Training of in-house and sub-contract staffStep 6 – Plan for efficient materials and waste handling & develop targetsStep 7 – Measure waste quantities and typesStep 8 – Monitoring against targetsStep 9 – Review
16Message of SWMP Pre design stages Design stages Construction stages Part of early project planning process as a framework introducing other tool & requirements such as demolition protocol, duty of care etcDesign stagesThe design is a key factor in influencing waste arising during construction. Encourage design team to reduce waste at source.Construction stagesImplement on site at all levels of construction activity. Communication and training to all site staff, where necessary.Though it should be noted that SWMP is mainly looking at managing waste arising but this tool can be used as mechanism to source reduction of waste.The implementation of SWMP can be used decision making tool during pre design and design stages. This means that how design and initial planning can contribute to the effective implementation of SWMP by looking material specification and construction stages and potential waste streams. Many variables and restraints affect the design process that in turn affects the wastes arising and the resultant opportunities for designing out waste. Such issues include materials choice, complexity, communication and co-ordination.
17Site Waste Management Plans: Current Practice Activity not carried outActivity carried out occasionally or at low levelActivity carried out thoroughly on all sitesSWMP is only a framework and it depends on how it is used as to how effective it can be in reducing waste and costs.If we make the assumption that addressing all the checklist questions will result in best practice we can see that even where they are being used, existing SWMPs typically fall well short in practice -There is clearly scope to improve beyond simply producing a SWMP as a tick box exercise
18Housing Sector SWMP Support Sector specific suite of tools, requirements and guidanceProvides model templates, requirements and clauses for incorporating into new and existing SWMPs based on:Standard practiceGood practiceBest practiceIn draft stage and will be published in April in Association with The Housing Forum, NHBC and the BRE
19Housing Sector SWMP Support Specific elements include:Guidance for commissioning clients and housebuildersTemplate for developing a waste strategyModel clauses forTrade contractorsWaste service providersRequirements for good and best practice implementation of SWMPsIn draft stage and will be published in April in Association with The Housing Forum, NHBC and the BRE