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Reducing and reusing construction waste at Madrid Gate I 

With 800 tonnes produced each year, construction and demolition waste account for 32% of the total amount of waste generated in Europe.

Our mission is to reintroduce waste from our developments back into the operational cycle, maximising the value of used materials. Doing so can significantly reduce our environmental impact and set a powerful example of circular construction.

Circular construction begins with brownfield development

Madrid Gate I is part of an ambitious Goodman project to reindustrialise and revitalise more than 168,000 sqm of disused land. The previous occupier had its manufacturing plant in this location but left the plot unoccupied after remodelling. With Goodman's brownfield redevelopment project in place, the site is about to begin its second life, offering a lettable area of 33.200 sqm, including 3,380 sqm of office space.

Giving a second life to old materials

The first step in our circular construction process was learning which materials were present and fit for reuse. For this, we teamed up with CoCircular, a waste management service that certifies the complete traceability of each waste stream. With their expertise in waste monitoring, coaching operators and supervising the waste sorting process on site, we were able to maximise the amount of waste reused in this project. CoCircular also took all materials to the most suitable waste management companies, where they were processed for reuse, recycling or energy recovery.

Process and results

Types of waste
+ Soil: Not contaminated.
+ Non-hazardous waste: Concrete, wood, metals, plastic, cardboard, insulation and plaster.
+ Hazardous waste: Aerosols, contaminated metal containers, contaminated plastic containers and absorbents.
+ Assimilable waste: Organic waste, packaging, paper and cardboard.

Types of containers 
+ Non-hazardous waste: Concrete containers (6m3), wood (20m3), metals (6m3), plastic (6m3), cardboard (6m3), insulation (6m3) and plaster (6m3).
+ Hazardous waste: Aerosol cans (220L), contaminated metal containers (220L), contaminated plastic containers (220L) and absorbents (220L).
+ Assimilable waste: Organic bins (120L), containers (120L), paper-cardboard (120L).

Container removal frequency
+ Non-hazardous waste: the containers are removed on a monthly or weekly basis, depending on the generation rate.
+ Hazardous waste: Drums are removed every six months or on a quarterly basis, according to the generation rate.
+ Assimilable waste: Bins are removed on a weekly basis - Organic (120L), containers (120L), paper-cardboard (120L).

Destination
+ Non-hazardous waste: Containers - Treatment plant - Final manager (depending on waste Tecmasa, Carpa, Ferimet, etc). Stockpiles and inerts - On-site valorization.
+ Hazardous waste: Drums - Treatment plant - Controlled deposit of hazardous waste.
+ Assimilable waste: Bins - MSW treatment plant - Management assumed by the Local Entity (EELL).

Percentages of wastes (Recovery)
+ Non-hazardous waste: Concrete (100%), wood (100%), metals (98%), plastic (75%), cardboard (85%), insulation (100% return) and gypsum (82%). Inert waste (100% recovery "in situ")
+ Hazardous waste: Aerosol drums (0%), contaminated metal containers (0%), contaminated plastic containers (0%) and absorbents (0%).
+ Assimilable waste: Organic bins, packaging, paper and cardboard. Exactly unknown (Local Entity management), around 73%.