The use of Dubocalc and the CO 2

The use of Dubocalc and the CO 2 performance ladder as instrument for GPP and the CO 2 performance ladder Jan van der Zwan Rijkswaterstaat 1

Contents • What is Dubocalc (DC) • How does it work • DC in contracting • What is the CO 2 performance ladder • How does it work in contracts Rijkswaterstaat

New Tools for sustainable procurement • “CO 2 ladder” www. SKAO. nl • Dubocalc www. Rijkswaterstaat. nl/Duurzaaminko pen Rijkswaterstaat

Dubocalc • LCA based tool international standard based on materials and energy) • Other environmental effects are taking into acount in an Environmental Impact Study • Relevant international acceptance (relation to CPR basis requirement 7 (sustainability) 4 Rijkswaterstaat 22 -12 -2011

What is Dubo. Calc? • database (ISO 14040) with aspects (materials/processes) and environmental effects • Software Dubo. Calc • Projectinformation Rijkswaterstaat

Wat is Dubo. Calc: Duurzaam bouwen Calculator ? Input (projectdesign) Tons of materials. Transportdistance Lifecycle of project Dubo. Calc LCA calculator LCA Database 11 environmental effects Environmental cost calculator Rijkswaterstaat Output o. a. ton CO 2 equiv. Environmental Cost Indicator (MKI) in €

Dubo. Calc standardisation Input ISO 14040 Ontwerpspecs Selectie van processen: uniek voor Dubo. Calc NEN 8006 National platform Dubo. Calc LCA calculator Nationale selection of Environmental effects Nationale National database Environmental Building materials costs SBK commissions Rijkswaterstaat Output o. a. CO 2 -emission Environmental costs (“MKI”)

Milieu. Kosten. Indicator (MKI) Materials and processes Milieueffectcategorie Items (M/P) 1. Climate change 5, 8 2. Effect on ozone layer etc 3. Human toxicity 4. Ecological toxicity, sweet water 5. Ecological toxicity, salt water 6. Ecological toxicity, land 7. Photochemical reactivity Smog) 8. Acidification 9. Over fertilisation 10. Depletion of non renewable materials 11. Depletion of fossil fuels Equivalent unit (kg) CO 2 eq CFK-11 eq 1, 4 -DCB eq C 2 H 2 eq SO 2 eq PO 4 eq Sb eq € € € 0, 05 30, -0, 09 0, 03 0, 0001 0, 06 2, -4, -9, -0, 16 MKI DCB= dichloorbenzeen Rijkswaterstaat 9 Env. Cost [€/kg equivalent] 0, 29 etc XX

Items • Four phases – Building (excavation, production, building) – use – Maintenance – demolition • Contains materials and processes and end of life scenario (reuse, landfill et cetera) Rijkswaterstaat 10

Optimalisation with Dubo. Calc • Building/design – Choice of materials, amounts and transport distances* • Use – energy • Maintenance – Life, maintenance* *not in all cases, only where the environmental impact is distinguishing Rijkswaterstaat 11

Design options: Environmental Cost Indicator (MKI) Rijkswaterstaat 12

Dubo. Calc in contracting • Demand in contract: maximum MKI value • Proces demand: design optimisation using Dubo. Calc – E. g. earth works • Awardingscriterium (economical most valuable bit) : stimulation to a sustainable design – E. g. road constructions, works of art, earth works Dubo. Calc only when there is a possibility to design!! Rijkswaterstaat

For information and instruction: Dubo. Calc: www. rijkswaterstaat. nl/keniiscentrum Sustainable procurement with Dubo. Calc: Intranet RWS: http: //corporate. intranet. rws. nl/duurzaam inkopen Rijkswaterstaat

Instrumenten voor duurzaam inkopen en gunnen op waarde • Senter-novem criteria als minimum niveau • Ambitie RWS gaat verder: – CO 2 prestatieladder – Dubocalc • EMVI omgeving – Wat is duurzaamheid ons (RWS/maatschappij/SLA) waard? LCC moeten niet duurder uitvallen. Rijkswaterstaat

CO 2 performance ladder • CO 2 management in organisation and applied in projects • 5 levels of Certification of company Low level: within own company High level: innovation with partners in supplychain Level is awarding criterium Will be applied in all contracts of RWS Rijkswaterstaat

CO 2 prestatieladder bedrijfsvoering organisatie Rijkswaterstaat 17