Company Presentation

Company 

Presentation 

Naturally...

DEN OUDEN GROUP | Organisation 

• Family business 

• Founded in 1948 

• Approx. 125 employees 

• Turnover of approx. € 42 million 

Advisory Board: 

Drs. P.J.J.M. (Peter) Swinkels, Mr. A.A.M. (Louis) Deterink and G.C.M. (Berrie) den Ouden 

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DEN OUDEN GROUP | Vision & Mission 

Vision: 

Mission: 

A highly service oriented family business. 

Worldwide unburdening in soil improvers, biofuels and building 

materials. 

Specializations: 

• The production of soil improvers and biomass at various locations throughout the 

Netherlands. 

• Design, implementation and maintenance of civil and agricultural works and soil 

remediation. 

• Detection of conventional explosives, historical research, risk analysis and advice. 

(Bodac bv) 

• Worldwide export of organic and organic-mineral fertilizers, liquid fertilizers and 

substrates. (Ferm O Feed bv) 

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CONSTRUCTING | Engineering 

• Integrated contracts (UAV-GC) 

• Design & Construct 

• Turnkey project execution 

• Infrastructure maintenance 

• Lean planning 

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CONSTRUCTING | Infrastructure 

• Civil and agricultural engineering 

• Reconstruction projects 

• Preparing sites for construction and housing 

• Soil decontamination 

• Nature development 

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CONSTRUCTING | Concrete Pavements 

• Concrete pavements 

- Roads 

- Roundabouts 

- Bike paths 

- Bus stops 

- Company pavements 

- Target group lanes 

- Rest areas 

- Airport platforms 

• Line structures 

- Roundabout kerbs 

- Edgings 

- Barriers 

• Print Concrete 

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CONSTRUCTING | Remediation 

• Soil remediation 

• Tank site remediation 

• Groundwater remediation and monitoring 

• Removal of contaminated soil 

• Environmental guidance and advice 

• Arranging the relevant permits 

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BODAC | Research & Consultancy 

• Historical Research 

• Project Risk Analysis 

• Cultural History World War II 

• Archaeology 

• Advice and Guidance 

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BODAC | Explosives detection 

• Analog detection 

• Digital detection 

• Depth detection 

• Excavation work 

• Ammunition separator 

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GREEN RECYCLING | Services 

• Intake of approx. 275,000 tons of: 

– pruned branches 

– roadside grass 

– ditch cuttings 

– leaves 

– tree stumps 

• Unburdening in forestry 

• Production of biomass 

• Emergency plan for municipalities 

• Issuing periodically and independently 

CO ² -reduction certificates for clients 

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GREEN RECYCLING | Products 

• Substrado ® 

• Soil improvers 

• Tree Nutrition 

• Groundcovers 

• Biofuels 

• Granules 

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FERM O FEED | Services 

• Intake of poultry manure (approx. 60,000 tons) 

• Production of fertilizers (approx. 45,000 tons) 

• Customized production 

• Customized packaging 

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FERM O FEED | Products 

• Fertiplus ® 4-3-3-65 OM 




• Fertiplus ® BIO 4-10-2-55 OM 

• Fertiplus ® COW 2-1-3-55 OM 

• Fertiplus ® Substrates 

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DEN OUDEN GROUP | Corporate social responsibility 

• Social Return: investing in people and society. 

• Cradle to Cradle: closing green cycles. 

• CO 2 reduction: creating awareness among customers and suppliers. 

• Sustainable soil: giving the soil back what it is asking for. 

• Innovation: essential for achieving sustainable targets. 

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DEN OUDEN GROUP | Certification 

• ISO 9001 (Quality) 

• ISO 14001 (Environmental Management) 

• VCA ** (Safety) 

• CO 2 CONSCIOUS level 3 (CO 2 Conscious Conduct) 

• BRL SIKB 7000 - pr. 7001 (Conducting soil decontamination 

according to conventional method) 

• BRL SIKB 9335 (Environmentally sound soil products) 

• WSCS-OCE (Detection of conventional explosives) 

• NTA 8080 (Sustainable biomass) 

• RHP certificate (Certified substrates) 

• Certified Compost (Certified natural compost) 

• Control Union Certification (Biological cultivation) 

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DEN OUDEN GROUP | References Contracting 

Waste collection station 

Ecopark The Limes (D&C) 

Client: 

Municipality of Alphen a/d Rijn 

Implementation period: 2013 

Ecopark The Limes is more than just a new waste collection station 

for the Municipality. This waste collection station is a sustainable 

step forward in the waste disposal sector. Ecopark The Limes wants 

to stimulate the environmental awareness of visitors from a 

sustainable approach. By encouraging proper waste sorting, waste 

can be used again as a raw material for new products. 

The new Ecopark also uses solar and wind energy. To complete the 

picture, the Charity Association Alphen manages a workplace and an 

education room where primary school children learn about waste, 

raw materials and economical use of the earth. 

This D&C project was carried out by consortium Den Ouden 

Aannemingsbedrijf and Nieuwenhuizen-Daandels Bouw. 

The construction of this new waste collection station started in May 

2013 and was completed in November 2013. 


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Bus Stop Accessibility (D&C) 

Client: 

Municipality Bernheze 

Implementation period: 2010-2012 

Client: 

Province of Noord-Brabant 


Den Ouden Contracting ensured the delivery of the design, preparation, 

implementation (and maintenance) for above-mentioned projects 

concerning the accessibility of bus stops. 

The bus stops had to be made accessible for the elderly and disabled. For 

instance raised platforms (with safety tiles for the blind) and various 

furniture like a bench, a public waste bin and bike racks were installed. 

The work for each bus stop was relatively limited, but the total project was 

a major logistical challenge. Good communication between all parties 

involved was very important in order to ensure the requirements and 

desired quality were met. During the realization phase temporary bus stops 

were arranged in the immediate vicinity of the bus stops. In total 2,000 m 

of special bus stop kerbs was used. 

The province, the municipalities as well as the transport companies are very 

pleased with the method and implementation by Den Ouden on the bus 

stop accessibility project. 

The project involved a total of 180 bus stops. 


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Construction Intersection 

“Hovenring” Eindhoven 

Client: 

Municipality of Eindhoven 


The roundabout between the Heerbaan in Veldhoven and the North 

Brabantlaan in Eindhoven has been converted into an intersection, 

called the “Hovenring”. 

The Hovenring symbolizes the access to Meerhoven, Eindhoven and 

Veldhoven and is strategically located near the A2 highway. The 

intersection is part of the key project ‘West Corridor’, a development 

zone extending from the central station to Eindhoven Airport. 

The Hovenring was created because in recent years traffic has 

increased in such a way that an adjustment was required. The 

Eindhoven Municipality wanted to lead cyclists over the intersection in a 

faster, safer and more comfortable way. 

The bridge consists of a 70 m high pylon, 24 high cables and a circular 

bridge deck and is entirely made of steel. On the inside of the bridge 

deck a ballast ring is attached with a diameter of 72 meters. 

Bodac carried out the explosives detection at the location of the 

Hovenring. Den Ouden Contracting in collaboration with BAM ensured 

the construction of the Hovenring. 


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Site Preparation Work residential zone 

including boulevard ‘Hoogh Waalre’ 

Client: 

Municipality of Waalre 


In a boulevard along lake ‘De Meeris’ in Waalre 57 different types of self-compacting 

concrete elements have been incorporated. Den Ouden Contracting worked with a 

digital installation plan. The boulevard, a design of Kragten consultancy in Herten, is 

located between the water and the new district Hoogh-Waalre. 

In 2012, Den Ouden Contracting placed four graceful concrete bands of 700 meters, 

descending to the water in three levels. 

The work performed concerns the zoning plan Hoogh-Waalre. 


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Fish Passage Vierlingsbeekse Molenbeek 

Client: 

Water board Aa and Maas 


The work performed is located in the floodplains of the Maas river at Vierlingsbeek. 

A total of 270 fish barriers must be eliminated. Until 2015 the water board deals with 

50 locations. The three major obstacles to the Maas river are Sluice Crèvecoeur, 

Pumping station Van Sasse and Watermill Vierlingsbeek. 

The fish in the Molenbeek at Vierlingsbeek can now freely continue swimming. 

Because of the construction of the fish passage, the stream has no more obstacles 

to fish passage. 

The fish passage is part of a project to bring back to life the side brooks of the Maas 

river. Obstacles to fish passage are cleared and streams get back into their natural 

channel. A historic waterwheel has also been restored to its former glory. 

The work consisted mainly of: 

• soil excavation, transport and disposal; 

• the application of a “De Wit” passage; 

• the installation of cascades for basin fish ladder; 

• drainage works; 

• the placement of sheet piling curtains. 


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Renovation Mariaveld 

Client: 

Municipality of Echt-Susteren 


The work performed is located in the district Mariaveld in Susteren, 

in the municipality of Echt-Susteren. The existing road profile has 

been adapted to current standards. 

In addition, the vegetation has been addressed and the existing 

sewer has been replaced. While replacing the sewer the rainwater 

was also disconnected. 

The work consisted mainly of: 

• removal of pavements; 

• detecting, identifying and securing conventional explosives (CE); 

• carrying out earthworks; 

• carrying out drainage works; 

• installation of foundations; 

• installation of pavements; 

• performing additional work. 


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DEN OUDEN GROUP | References Bodac 

Renovation Westervoortsedijk 

Arnhem 

Client: 

Municipality of Arnhem 


In May 2011 the first work started for the subsequent widening 

of the road; the soil decontamination of the former gas factory 

site, the necessary demolition of some buildings and the 

repositioning of cables and pipelines. 

The cable ducts had been contaminated with polluted soil, which 

was rehabilitated simultaneously with explosives detection works. 

Several explosives and remnants of explosives were found. 

To ensure safety a separation cloth was placed in the ducts, so 

that the boundary of the safe and clean soil remains clearly 

visible. 

Below, a summary of the detected CE: 

• 1x 5.5 inch high explosive grenade, fired (UK) 

• 1x 3 inch rocket (UK) 

• 5x shell small-caliber ammunition 


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N261 Waalwijk - Tilburg 

Client: 

BAM N261 Non Stop vof 


This road will be converted into a road with multi-level 

crossing and 2 x 2 lanes along its whole length. 

Following a historical research carried out by Bodac, it was 

decided to conduct a search for Conventional Explosives 

(CE) from the Second World War. 

Due to the large amount of CE that was found it was not 

possible to destroy them all at once. A total of more than 30 

explosives was found, which were blown up in two separate 

explosions. 

The whole road was closed to traffic during the work. 


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District ‘The Eng’ Veen 

Client: 

Municipality of Aalburg 


For the new district ‘Den Eng' in Veen Bodac has conducted explosives 

research. In addition to surface detection, depth detection has also been 

carried out. With the aid of a cone with a magnetometer the soil can be 

searched for large metal objects up to a maximum of 18 meters below the 

surface. 

In areas with a ‘weak’ subsurface, (aircraft) bombs may have penetrated 

the soil to a greater depth. To find conventional explosives at such depths 

it is necessary to work with an MDE-drive. This is a long lance with a 

sensing probe in its tip, which is pressed into the soil in accordance with a 

predetermined measuring grid (as in probing). This implies that a (senior) 

OCE-expert is real time monitoring the penetration of the measuring probe 

into the ground. When a disturbance is measured the OCE-expert can 

immediately stop the process and register the measurement. This way a 

major area can be mapped relatively quickly and accurately. An advantage 

of this method is that the soil structure remains intact. 

During the excavation work remains of a 60 LB SAP missile were found. 

This resulted in an adjustment of the search order. As expected according 

to the historical research, remnants of an aircraft bomb were also found. 


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Lock Belfeld 

Client: 

Department of Waterways 


Following a historical research carried out by Bodac, the Department of Waterways 

requested Bodac to search the outports of the ‘Lock Belfeld’ for Conventional 

Explosives (CE) from the Second World War. In the future, civil works will take 

place at the project site with the purpose of deepening the outports of the ‘East 

Lock’. 

The surface of the search area was approximately 30,000 m². A total of 23 

suspicious disturbances had been interpreted from the detection data. Divers have 

approached the suspicious objects to determine whether they were explosives. 

A part of the project area could not be detected and was therefore dredged with 

explosion-protected equipment and the dredging was subsequently sieved. 


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DEN OUDEN GROUP | References Green Recycling 

Roofpark ‘Vierhavenstrip’ Rotterdam 

Client: 

Municipality of Rotterdam 


The largest roofpark in Europe is located on the top of shopping boulevard 

‘Bigshops Parkboulevard’ in the Vierhaven street in Rotterdam. The design of 

the roofpark was carried out by contractor Mostert de Winter, part of the BAM. 

The roofpark is remarkable and unique in the Netherlands because of its size 

and design. The park is one kilometer long, 80 meters wide (80,000 m²) and its 

highest point is 9 meters. The park has a lot of green areas and is easily 

accessible from the district. 

What makes this roofpark unique is the combination of multiple functions on the 

same surface. It consists of a shopping boulevard, a service road, a sea wall 

that protects Rotterdam from the sea and a park on the roof of the complex to 

give a green boost to the environment. 

Den Ouden has carried out the following main activities: 

• supply and transport of approximately of 50,000 m³ Substrado ® 

(topsoil mixture with perlite); 

• supply and transport of 8,000 m³ construct perlite. 

Both products are lightweight and therefore ideal as a light filling material. The 

soil was supplied with special large trucks. Transportation tasks were carried out 

in the evenings and at night, to avoid traffic disturbances around Rotterdam. 


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Sustainable processing of Municipal 

green waste (Drechtsteden) 

Client: 

Implementation period: 

Municipality of Dordrecht 

2010-2014 Inc. prolongation 

Along with the Municipalities of Papendrecht, Zwijndrecht, Sliedrecht, 

Alblasserdam and the ‘Sport Company’, the Municipality of Dordrecht has 

signed a four-year contract with Den Ouden. Since October 1, 2010, we 

undertake the processing of green waste from these five municipalities 

and the ‘Sport company’ in Dordrecht. Part of the green waste provides 

sustainable energy for 770 households. 

The assignment includes the cost-effective and sustainable transport and 

processing of municipal green waste from these five municipalities. The 

municipalities want to process a part of their green waste in a more 

environmentally friendly manner. A projectgroup was formed to 

collectively implement this trajectory. 

In addition to the environmental benefits through sustainable energy and 

reduction of CO 2 emissions, this new contract has also delivered a 

significant cost-saving to the municipalities and the ‘Sport company’. The 

municipalities together save more than 40% by the increase in volume. 


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Tidal recovery Rammegors St. Philipsland 

Client: 

Kuipers Infra, for Department of Waterways 


The Department of Waterways is going to create a pass in the ‘Krabbenkreekdam’ in 

order to connect the nature reserve ‘Rammegors’ with the Oosterschelde. As a result 

the ‘Rammegors’ will be flooded. This salinisation should lead to the creation of 

valuable mud flats and salt marshes. 

End of August 2013 Den Ouden started with the removal of 63 ha. of trees and 

shrubs. Then a trench was dug so the water from the Oosterschelde can soon flow 

into the nature reserve. 

The (neglected) trees and shrubs were removed and chipped (reduced) by Den 

Ouden. The wood chips were then transported to different biomass plants in the area. 


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Supply of biomass for sustainable energy 

Biomass is organic material used as biofuel and substitution of fossil fuel. Suitable streams are 

selected by a carefully controlled collection process. The prunings are separated from the other 

green flows and cleared of contaminants. Then the prunings are chipped or reduced into the 

fraction desired by the customer. We deliver biomass in the form of Shreds (20-100 to 20-300) 

and Chips (pruning chips, wood chips). 

The benefits of biomass are an environmentally responsible processing method, uniform quality, 

continuous availability and a contribution to CO 2 reduction. Biomass is mainly used in power 

plants, industrial heaters and wood stoves. 


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DEN OUDEN GROUP | Main Office Schijndel 


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DEN OUDEN GROUP | Helmond 


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DEN OUDEN GROUP | Schijndel 


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DEN OUDEN GROUP | Haps 


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DEN OUDEN GROUP | Zegge 


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DEN OUDEN GROUP | Rosmalen 


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DEN OUDEN GROUP | Muiderberg 


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DEN OUDEN GROUP | Contact 

Den Ouden location Vlagheide 

Vlagheide 6C 

5482 NM SCHIJNDEL 

Den Ouden location Land van Cuijk 

Beijersbos 2 

5443 PL HAPS 

Den Ouden location West-Brabant 

Rijksweg Noord 8 

4735 TX ZEGGE 

Den Ouden location ‘t Gooi 

Naarderstraatweg 6 

1399 VR MUIDERBERG 

Den Ouden location Maasland 

Vliertwijksestraat 45A 

5244 NH ROSMALEN 

f.r.t.l. Commercial director R.M.H.F. (Rob) den Ouden, Chairman of the board drs. J.J.P. (Jochem) Langenhuijzen RC and 

Operations director H.W.A.M. (Harm) den Ouden 

Den Ouden location De Peel 

Den Ouden ROC 

Ferm O Feed 

Gerstdijk 6 

5704 RG HELMOND 

Visiting address 

Hermalen 7, 5481 XX SCHIJNDEL 

Post address 

Postbus 12, 5480 AA SCHIJNDEL 

Tel. +31 (0)73 - 543 10 00 

info@denoudengroep.com 

www.denoudengroep.com 


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© April 2014, Den Ouden Groep 

Naturally...

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