Business Presentation Den Ouden Groep 03-2018

Service oriented family business 

Infrastructure 

Concrete roads 

Soil 

remediation 

UXO 

Clearance 

Collection of green 

waste 

Groundcovers 

Soil improvers Biomass Organic 

fertilisers 

Naturally... 

www.denoudengroep.com

Colophon 

Fourth edition 

Disclaimer 

This edition has been created with information from different sources. 

Various organisations collaborated and provided information. DEN OUDEN 

GROEP checked and confirmed this information as much as possible, 

however we are not liable for any errors or consequences. 

© March 2018, DEN OUDEN GROEP 

This brochure can also be downloaded 

via www.denoudengroep.com

Prologue 

We continuously broaden our horizon for a better environment 

The soil is deteriorating and raw materials and energy sources within our earth are being depleted. 

Developments that have been going on for decades. Together, we are responsible for this happening, 

but together, we can also achieve the turnaround. A new approach is necessary, because we have the 

responsibility to leave the next generation with a vibrant planet. 

We, as a service-oriented family business… 

work on contributing a little bit to achieving 

a better environment every day. By 

producing and delivering organic Fertilizers, 

soil improvers, and BioBased products to 70 

countries, we combat the deterioration of 

the soil and exhaustion of energy sources. 

This has demonstrably led to 10% more 

food production in the areas where our 

products have been applied. In addition, 

the application of biofuels, only produced 

based on residual flows, has achieved a CO 2 

reduction of 8%. These are great results, but 

on a global scale, they are of very limited 

value. In order to increase that value, we 

will invest heavily in the production and 

delivery of organic Fertilizers, soil improvers, 

and BioBased products in the coming 

years. Not only because we believe in our 

sustainable products, but because we 

have the responsibility as a company to 

contribute to a better living environment. 

We, as a service-oriented family business… 

are working on building and expanding our 

horizon. Within infrastructure, a transition 

from the current contractual forms to the 

new BVP contracts and expansion of the 

UAV-gc works is currently taking place. 

With pride, a strong team works on realising 

the growth we see before us as board and 

drs. J.J.P. (Jochem) Langenhuijzen RC 

family every day. Traditionally, we are 

CEO 

entrepreneurs in heart and soul, and we 

want to link this to the new market segment. We want to serve this segment with our specialisations, such as concrete roads, 

archaeology, and UXO Clearance. 

Naturally… 

3

Content 

1. Who are we? 

1.1 Passionate staff. ............................................................................ 5 

Toon Daniëls speaking. .................................................................... 6 

1.2 History. ..................................................................................... 7 

1.3 Mission & Vision. ........................................................................... 8 

1.4 Revenue. .................................................................................... 8 

1.5 The board & third generation. ........................................................ 9 - 11 

1.6 Certificates. .......................................................................... 12 - 13 

1.7 Performance Ladder Social Entrepreneurship (PSO). .....................................14 

1.8 CO 2 

performance Ladder. .................................................................14 

1.9 Circular BioBased economy. ..............................................................15 

1.10 Corporate Social Responsability (CSR). ...................................................16 

2. What do we offer? 

2.1 Infrastructure. ....................................................................... 17 - 26 

Joris van de Vleuten speaking. ............................................................20 

2.2 UXO Clearance (BODAC). ........................................................... 27 - 33 

2.3 Production of soil improvers & biofuels. ............................................ 34 - 36 

3. What do we create? 

3.1 Organic Fertilizers (FERM O FEED). ................................................. 37 - 40 

3.2 Soil improvers & Growth site improvement. ........................................ 41 - 43 

Dayenne van Overdijk - van der Veeken speaking. ......................................44 

3.3 Groundcovers. .............................................................................45 

3.4 Biomass. ............................................................................. 46 - 48 

Peter Bakker speaking. ....................................................................49 

4. Contact 

Adresses. .................................................................................. 50 - 51 

4


1.1 Passionate staff 

Without our passionate staff, we would not be able to serve you in a service-oriented and professional 

way every day. We offer our employees the possibility of further developing and specialising, so that 

everyone is or ends up in the right place. Our staff are very valuable and are the engine of our company. 

Some figures (2017): 

• 200 employees in paid employment 

• Average age 41,2 years 

• Absenteeism is 1,87% 

Construction 

CBS 

62 

63 

39 

3,7% 

1,87% 

26 

22 

55 

Sickness absence 

Staff’s age 

3,7% 2,47% 

5

Toon Daniëls speaking 

From 20 to 200 colleagues 

”Since 1 April 1987, I have been working for (at the time) 

M. den Ouden & Zn. I started as a driver of a mini digger, 

later became a truck driver, and in between, I helped with 

all kinds of activities in wage and ground work. In 1996, 

Frans den Ouden asked me to help him with the planning 

for people, equipment, and transport. Shortly after, FERM O 

FEED in Zeeland was acquired, and five months after that, 

Promest in Helmond. In recent years, I have been taking 

care of equipment management and planning the people for 

Infrastructure. As long as I have been working in the office, 

I have not given up my old profession; I regularly drive the 

truck on Saturdays. 

Over the course of 30 years, I have seen the company 

grow from a mere 20 to over 200 employees. Sometimes 

gradually, often a bit faster. I have been given and have 

taken many opportunities. DEN OUDEN GROEP is a flatlevel 

organisation, with short lines, and rapid action. I truly 

enjoy working here and hope to be able to contribute to this 

dynamic company for many more years.” 

Toon Daniëls 

Equipment Manager 

6


1.2 History 

2018 . Exploitation location Midden-Brabant in Oosterhout 

. Opening location Midden-Limburg in Kelpen-Oler 

2017 . Opening of location ‘Brabantse Wal’ in Steenbergen 

2016 

2015 

2014 

2011 

2010 

2006 

1998 

1996 

1990 

1980 

1970 

. Opening of location ‘De Kempen’ in Sterksel 

. Van Dijk Boomschors & Biofiltratie and BSI Bomenservice 

become a part of DEN OUDEN GROENRECYCLING 

. Opening of location ‘Kreekrak’ in Rilland 

. Expansion of BODAC with an archaeological branch 

. Expansion of Den Ouden Contracting Firm with concrete road construction 

. Opening of a new production facility of FERM O FEED in Helmond 

. The third generation of Den Ouden carries on the family company 

. Production facility of FERM O FEED in Zeeland burns down 

. Opening of location ‘Maasland’ in Rosmalen 

. Expansion of Den Ouden Group with BODAC, a UXO detection company 

. Opening of location ‘West-Brabant’ in Zegge 

. Start of FERM O FEED, a producer of organic fertilizers 

. Opening of location ‘Het Gooi’ in Muiderberg 

. Opening of location ‘Vlagheide’ in Schijndel 

. Start of DEN OUDEN GROENRECYCLING, recycling green waste into soil improvers 

. Start of civil- and agricultural engineering operations and the processing of waste 

1976 . The second generation carries on the family company 

. Expansion of operations with earth-moving projects and trade in sand and gravel 

1965 . Foundation of a Machinery Contractor 

1948 . Tein and An den Ouden start their own small business with a threshing-machine 

Tein en An den Ouden with their twelve children 

7


1.3 Mission & Vision 

Mission 

DEN OUDEN GROEP is an international and strong service-oriented family business, with a high priority for sustainability, 

BioBased economy, and cradle to cradle. We provide worldwide services in the field of soil improvers, biofuels, soil Fertilizer, 

soil safety, urban refurbishment, and concrete construction. 

Vision 

DEN OUDEN GROEP works on innovative solutions, corporate social responsibility, and CO 2 reduction on a daily basis. With 

our products and services, we want to help keep our world healthy, fertile, and liveable. 

1.4 Revenue 

The revenue per operating company is: 

FERM O FEED 

€ 11.800.000 

DEN OUDEN ROC 

€ 1.300.000 

DEN OUDEN MATERIEEL 

€ 250.000 

€ 

INFRASTRUCTURE 

AND 

CONCRETE ROADS 

€ 22.300.000 

GREENRECYCLING 

€ 24.500.000 

BODAC 

€ 9.850.000 

Total € 70.000.000 (2017) 

8


1.5 The board & the third generation 

Advisory Board 

The Advisory Board consists of: 

• Mr. A.A.M. (Louis) Deterink (Advisory Board chairman) 

Insolvency Law & Company Law lawyer at Deterink Advocaten en Notarissen in Eindhoven. 

• drs. P.J.J.M. (Peter) Swinkels 

Former chairman of the board of family business Bavaria and former chairman of the 

Brabants Zeeuwse Werkgeversvereniging (BZW). 

• G.C.M. (Berrie) den Ouden 

Former general director of DEN OUDEN GROEP and board of BVOR. 

The Advisory Board supports the management with advice and recommendations regarding the objectives, strategy, 

and business of DEN OUDEN GROEP. 

Management team 

The management team consists of: 

• drs. J.J.P. (Jochem) Langenhuijzen RC, Executive Chairman 

• R.M.H.F. (Rob) den Ouden, Commercial Director 

• H.W.A.M. (Harm) den Ouden, Director 

• J.A.P.F.M. (Jeroen) den Ouden MSc, Director 

F.l.t.r. Rob den Ouden, drs Jochem Langenhuijzen RC, Harm den Ouden and Jeroen den Ouden MSc. 

9


The third generation 

The third generation consists of the following eight persons: 

‘I have been working in the family business since March 

1992. At the moment I am a working Team Leader 

on the shovel/crane at a Groenrecycling location. I 

am also part of the innovation team and help with 

analysing and developing final products from the 

DEN OUDEN GROENRECYCLING. I have been doing 

this with lots of passion, dedication, and pleasure for 

25 years. I am also very proud of the family business. It’s 

one big family with a strongly driven, pleasant, and healthy 

culture where we work on beautiful projects with a good 

heart on a daily basis. At DEN OUDEN GROEP, the customer 

comes first. We are service-oriented and a deal is a deal. 

We are very flexible and always think toward a suitable 

solution. We work on innovative products and projects and 

try to stay one step ahead as a company for now and for 

the future.’ 

M.A.G. (Marcel) den Ouden 

(date of birth 05-07-1974) 

‘I have been working in the family business since April 1999 

and I am the commercial director at the moment. I am 

also responsible for the sale of organic Fertilizers which we 

produce ourselves in our factory at FERM O FEED in 

Helmond. When I see the spirit and ambition of the people 

working for us,it makes me very proud. It is often because 

our people take that extra step or show that extra effort that 

we can make the difference in a sometimes difficult market. 

I also find it wonderful to see how users of our organic 

Fertilizers on the other side of the world are happy with 

the product we make and get great results with them. In 

addition, as DEN OUDEN GROEP, we want to keep thinking 

about the development of sustainable solutions for the 

future, to make and keep our world liveable for the next 

generations.’ 

R.M.H.F. (Rob) den Ouden 


‘In January 2010, I started working in our family business 

as a project leader for Design & Construct and I am 

currently responsible for Marketing & Communication. 

I consider it a very nice challenge to position the various 

business components in the market professionally and 

representatively. For instance, we annually participate in 

approximately 15 (inter)national trade fairs and spend a lot 

of attention to the appearance of our equipment and the 

location. I am very proud that I can now pour my dedication 

and creativity into our family business, and I hope that 

you, as a (potential) customer, also feel the passion of this 

beautiful Brabant family business, so that you can grow 

with us.’ 

J.W.M. (Jurgen) den Ouden 


‘I have been working in our family business since 1994 and I 

was named after the founder of our company, Grandpa Tein. 

I am currently mainly working at our location ‘De Peel’ in 

Helmond. It is a versatile location where FERM O FEED, 

DEN OUDEN ROC, and Groenrecycling are located. I work 

for Groenrecycling there and we also process bark and waste 

wood here. We also produce our roof garden substrates here. 

My grandpa started in 1948 and at a certain moment, my 

father and his brothers took over. Many things changed, 

the company grew quickly. All of us are proud of that! 

Now it is our turn, the third generation. We will do everything 

in our power to keep developing our company, so that it 

can continue to grow in a healthy way.’ 

M.H.E.M. (Tijn) den Ouden 


10


‘I have been working in our family business since 2004 and 

my current position is Operational Director. 

This position reflects all my activities and I am ultimately 

responsible for all operational matters that are present 

within our fantastic family business. I am proud to be 

working within our company and I am also proud of the 

involvement of all family members, our employees, and our 

permanent partners – it feels like one big team effort! We 

are entrepreneurs in heart and soul and we have the right 

solution for any issue!’ 

‘I have been working in our family business since April 2001 

and my job is all-round employee. 

I substitute at DEN OUDEN GROENRECYCLING and transport. 

The great thing about a family business is working 

together with your cousins in a growing and broad business. 

Always strive for the best for your customers and the 

company, and work with pleasure.’ 

W.W.M.M. (William) den Ouden 


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


“I have worked in our family business DEN OUDEN GROEP 

since the winter of 2014 and my current position is Director. 

In recent years I have worked in various divisions within our 

company. During this period, I got to know many colleagues, 

and noticed that everyone is full of passion and driven about 

our company. At the beginning of 2018 I became part of the 

management team, where I am responsible for the Logistics, 

Material and the production of Groenrecycling and FERM O 

FEED. I am very grateful to the management and family 

for offering me this opportunity. Together we work on the 

progress and growth of our company, to be able to hand it 

over to the fourth generation.” 

J.A.P.F.M. (Jeroen) den Ouden 


‘I have been working in the family business since August 

2016. I am working for FERM O FEED as a sales support/ 

back-office employee. I am proud of the company, it is 

special how it grew into what it is today. My grandpa 

started with something small and eventually, my father and 

his brothers built on that. The great thing about this family 

business is that the various business units all share the 

same goal, namely ensuring a greener and better liveable 

environment together. Nature and the soil are central to 

this. We work on this together full of passion and pleasure 

every day.’ 

P.P.J. (Paul) den Ouden 


11


1.6 Certificates 

ISO 9001 

Quality 

ISO 9001 

ISO 14001 

Environment 

ISO 14001 

VCA* and VCA** 

Safety 

VCA** 

WSCS-OCE 

Detecting Conventional 

Explosives 

Erlaubnis nach §7 Sprengstoffgesetzes 

Detecting Conventional 

Explosives in Germany 

Performance Ladder CO 2 awareness certificate-level 5 

CO 2 aware actions 

Performance Ladder Social Entrepreneurship - level 3 

Social entrepreneurship 

BRL SIKB 4000 

Archaeology 

BRL SIKB 7001 

Soil remediation 

BRL SIKB 7700 

Construction of liquid-tight 

concrete hardenings 

BRL SIKB 9335-4 

Environmental hygienic 

quality label of composite soil 

products 

12


RAG-certificate 

Quality label for soil products 

in public green 

RHP-certificate 

Quality label for substrates, 

substrate raw materials 

NTA 8080 

Sustainable production of 

biomass 

Keurcompost certificate 

Environmental care and Product 

Verification for green compost 

BVOR certificate ‘sick tree wood processing’ 

Processing company sick 

tree wood 

BVOR certificate ‘recognised invasive exotics processor’ 

Processing company 

invasive exotics 

Control Union Certificates 

Raw material regulations 

for organic fertilizers 

Ecocert Certificates 

Product suitable for 

organic farming 

OMRI listed 

Supports the integrity of 

organic production 

FiBL Listed 

International development of 

organic farming 

Soil Association Approved 

Future of nutrition and 

agriculture 

13


1.7 Performance Ladder Social 

Entrepreneurship (PSO) 

DEN OUDEN GROEP meets the requirements for Level 3 

on the PSO Performance Ladder. The Performance Ladder 

Social Entrepreneurship (PSO) quality label demonstrates 

that DEN OUDEN GROEP not only supports people with a 

vulnerable labour market position in its work, but also offers 

them a place within our own business. 

Companies with a level 3 recognition are among the leading 

companies in the field of social entrepreneurship and meet 

the qualitative requirements relating to appropriate work, 

integration, functioning & development, and guidance. DEN 

OUDEN GROEP considers social entrepreneurship to be selfevident: 

people with a distance to the labour market work 

with us on the work floor. 

1.8 CO 2 performance ladder 

DEN OUDEN GROEP is certified at Level 5 of the CO 2 

performance ladder. The objective is to reduce energy 

consumption over a period of five years, which will reduce 

CO 2 emissions by 10% calculated from the base year 2015. 

To achieve this objective, initiatives by the management, 

but certainly also by the employees of DEN OUDEN GROEP 

will need to be investigated and applied where possible. 

This means we not only do this in our business, but also in 

our projects. In our policy, we pay attention to how we can 

develop sustainably on the one hand (energy and materials) 

and achieve reduction on the other hand (energy, CO 2 

emissions, and waste). 

The most up-to-date carbon footprint data is on our website 

www.denoudengroep.com. 

14


1.9 Circular Biobased Economy 

The soil is deteriorating and fossil fuels 

and energy sources will be exhausted in 

the short term. We are all responsible for 

this happening, but together, we can also 

achieve the turnaround. A new approach 

is necessary, because we have the 

responsibility to leave the next generation 

with a vibrant planet. In order to increase 

our value in this effort, we will invest 

heavily in the production and delivery of 

Biobased products in the coming years. 

These BioBased products come from and 

return to Mother Earth and fit the image of 

the circular economy perfectly. 

We develop and introduce Biobased 

products to realise a more sustainable 

society. For instance, the residual flows 

come from the region and the production 

takes place within the region as much as 

possible. 

For more information about our BioBased 

products, see the Bio(Based) raw materials 

chapter. 

Taxol 

DEN OUDEN GROEP is closely involved is 

the biorefinery of taxus in order to obtain 

Taxol. Taxol is a valuable raw material for 

the pharmaceutical industry and is applied 

as an ingredient in cancer medicine. An 

intensive cooperation with Taxustaxi 

has been in place for some time. At our 

locations, there is free taxus collection for 

cancer control. 

15


1.10 Corporate Social Responibility (CSR) 

We distinguish ourselves with CSR because we are socially committed to our staff, but also to the people in the area. Our 

employees are our capital and our environment is our right to exist. We work on a better world, day after day: 

4 

4 

Processing (organic) residual flows into high-quality products, such as biofuels and soil improvers. 

Remediating contaminated land and water soil. 

4 Economically handling energy and raw materials, annual CO 2 reduction of 2%. 

If someone may end up in the Sickness Benefits Act (for a longer period), appropriate work is found. 

4 

4 

We always try to relocate people within the company when someone is not in the right place. 

4 CO 2 awareness certificate; we contribute to a more sustainable world because we reduce as much of 

our CO 2 emissions as possible. 

4 

4 

4 

NTA 8080 certificate; we show that we produce, process, trade, and use biomass for energy 

generation in a sustainable way. 

All electricity we consume is produced based on Dutch Biomass. 

Combating deterioration of the soil by delivering and advising in the field of soil improvers and organic fertilizers. 

16


2.1 Infrastructure 

For clients, DEN OUDEN GROEP is a solution-oriented and pragmatic party in the entire infrastructure 

process. And because everything is covered by us, we never point to other parties. Our goal is to be a 

transparent, reliable, and innovative partner for infrastructure projects. 

Our infrastructure activities mainly focus on: 

• Urban refurbishment 

• Concrete roads 

• Soil remediation 

2.1.1 Urban refurbishment 

Redeveloping existing urban areas is a complex task that is also becoming increasingly challenging due to new issues such 

as climate change (adapting sewage and drainage, water storage) and the new technologies that need to be placed in the 

ground (thermal storage, heat net, domestic and extinguishing water, telecommunications, etc.) 

DEN OUDEN GROEP is able to combine various disciplines needed to create and apply efficient and economical systems. 

We take care of planning, safety, flow, and communication when it comes to refurbishment projects. 

Result of reconstruction Orpheuslaan in Eindhoven 

17


References 

Design and construction of unique cradleto-cradle 

‘roundabout of tomorrow’ - Venlo 

Realisation of 30.000 m 2 public space ligne - 

Sittard 

Client: 

municipality of Venlo 

Implementation period: 2016-2017 

Client: 

municipality of Sittard 


The ‘Roundabout of Tomorrow’ is so unique because it is 

the first cradle-to-cradle roundabout in the Netherlands, 

and possibly in the entire world. But what is so unique 

about this roundabout, what makes it so sustainable 

and reusable? Firstly, we have moved away from asphalt 

as the hardening structure of the roundabout and used 

concrete. Concrete has a longer lifespan and requires 

little maintenance. The type of concrete used by DEN 

OUDEN GROEP has very low CO 2 emissions, namely 

about 70% less than normal. Thirty years from now, it 

is possible to remove each component separately and 

reuse it. This makes the roundabout cradle-to-cradle. 

Not just the roundabout is unique, but the form of 

cooperation was a bit different than usual as well. From 

the very beginning, DEN OUDEN GROEP, the municipality 

of Venlo, and Kragten were in open conversation with 

each other and with suppliers, subcontractors, Zuyd 

Hoogeschool, public utilities, and residents.The physical 

activities commenced on 6 June 2017, and the roundabout 

was ready for use at the end of August 2017. 

The construction of the new public space ‘Ligne’ 

(30,000 m 2 ) has the goal of realising a new multifunctional 

area. The work consisted of a large number of sustainable 

applications. The challenging work included the 

redevelopment of hardenings, sewage work, removing 

concrete cylinders, applying quay walls, applying bridges, 

drainage work, archaeological research, applying green 

facilities, applying street furniture, and applying a bypass 

for the Keutelbeek with a flow rate of 35 m³/sec! 

This was the most complex and biggest project of 

DEN OUDEN GROEP to date. Many parties have had a 

hand in the work, such as the architect, water authority, 

and the municipality of Sittard itself. 

But the most important thing is… the client is very 

satisfied! 

18


References 

Accessing structure core conversion - 

Loon op Zand 

Sewer replacement Frederiklaan - Eindhoven 

Client: 

municipality of Loon op Zand 


Client: 

municipality of Eindhoven 


The work is located in Loon op Zand and stretches across 

a length of approximately 2,600 metres. The objective is 

to improve the accessibility of the core of Loon op Zand, 

create a better and safer traffic flow, and give the public 

space a quality impulse. The core of Loon op Zand is 

not sustainable and future-proof. The maximum speed 

has been dropped from 50 km/h to 30 km/h. Through 

adjustments of the roads, paving stones, and green, the 

appearance of the street is also improved. The core of Loon 

op Zand is cleaner and safer because there is less traffic 

and people drive slower. 

The work is located in Frederiklaan, Jonghlaan, and 

Essenstraat in the municipality of Eindhoven. The 

Frederiklaan Sewer Replacement project has been 

implemented in nine phases. Two of these phases were 

carried out in Frederiklaan in front of the Philips Stadium. 

To minimise the inconvenience for the activities in the 

Stadium, the municipality wanted to optimally use the 

activity-free period in the summer. This was done by 

implementing as much of the first phase as possible in the 

period between the concerts of Guus Meeuwis and PSV’s 

first football match. This way, the work caused as little 

inconvenience to visitors as possible. 

19

Joris van de Vleuten speaking 

Working toward a common goal 

”DEN OUDEN GROEP is a dynamic family business with a 

professional appearance and passionate staff, which offers 

room for personal development and entrepreneurship at 

all levels. With an almost unlimited portfolio of services 

and products, we can relieve customers in the sustainable 

design of the outdoor space. Through our specialisations, 

we are able to create value for our clients in the field of 

advice, design, engineering, and realisation in every facet 

of a project. In short, we are a very interesting company for 

the market, our clients, and our colleagues at DEN OUDEN 

GROEP. I am proud to be a part of this organisation, where I 

contribute to the common goal full of enthusiasm and with 

lots of pleasure every day!” 

Joris van de Vleuten 

Manager Infrastructure & Concrete Roads 

20


2.1.2 Concrete roads 

Hardenings are increasingly being made of concrete. Concrete is very resistant to heavy and intense traffic loads and 

remains excellently driveable. The occurrence of track and ripple formation is minimal. Concrete has a long lifespan and is 

both recyclable and maintenance-friendly. 

Turning heavy traffic often leads to collapse of the hardening. This can be avoided with a concrete hardening. A concrete 

hardening is a ‘rigid’ and stable construction that can stand the test of time and heavy traffic without being damaged. 

Damage due to weather influences is negligible. Concrete also has an environmentally friendly character. The growth of 

weeds is minimal, which means pesticides are not necessary. We are able to take care of all concrete work with our own 

equipment. This enables us to guarantee quality and save costs. 

We will continue to actively innovate, including with concrete roads. DEN OUDEN GROEP wants to utilise a raw material 

such as grass even better by using the fibres and proteins in different ways, e.g. as a mixture for concrete production. This 

makes the raw material more valuable within the chain and allows it to be applied within the manufacturing industry. 

Construction of a concrete bus lane in the centre of Roermond 

21


References 

Construction of 10.000 m 2 concrete airplane 

platform - Dublin Airport 

Construction of 18.000 m 2 concrete aircraft 

test facility - Eindhoven 

Client: 

BAM Ireland 

Implementation period: 2017 

For the purpose of an Apron (airplane platform) renovation 

at Dublin Airport, DEN OUDEN GROEP has applied 

10,000 m² of high-quality concrete hardening. The work 

was completed to the full satisfaction of BAM Ireland and 

Dublin Airport Authority. 

The structure consists of a non-reinforced concrete floor 

with a thickness of 425 mm and a concrete quality of 

C35/45 XF4 with the addition of 5% air. The joint pattern 

on the platform is based on 5.5 by 5.5 metres whereby 

the longitudinal joints are linked by a coupling rod with a 

diameter of 20 mm centre-to-centre 600 mm. The cross 

joints feature dowels with a diameter of 40 mm centre-tocentre 

375 mm. The concrete mortar was delivered from 

a central location and the concrete hardening was applied 

with our Wirtgen SP850 Vario slipform paver modified to 

a width of 5.5 metres. 

Client: 

Dutch Central Government 

Real estate company 


A new aircraft testing facility for military planes has been 

constructed at the air base in Eindhoven. In addition to 

an open air concrete platform, this testing facility also 

has a high-walled platform. At this new location, the air 

force can test the C-130 Hercules and KDC-10 planes, 

for instance after servicing or repairs. According to the 

Ministry of Defence, this walled test site will cause less 

hindrance than the current one. 

The construction had two phases. During the first phase 

(2015/2016), taxiways and the plateau were constructed, 

plus a twelve metre high sound wall north of the plateau. 

During the second phase (2017), the walled plateau was 

built. The work mainly consisted of applying a testing 

facility with a slanted wall (embankment with concrete 

slabs). This slanted wall is intended to direct the ‘blast’ 

generated by the jet engines during test runs upward. The 

hardenings mainly consist of 18,000 m² cement concrete 

hardenings (incl. 7.5 km of joints) and prefab concrete 

slabs. 

The work was carried out as a contracting consortium 

with Dura Vermeer. 

22


References 

Construction of 40.000 m 2 concrete 

hardenings Lidl - Southamton (UK) 

Client: 

Bouwbedrijf Van de Ven 


Outside our national borders, in the South-England port 

of Southampton, construction company Van de Ven 

realised a distribution centre for supermarket chain Lidl. 

DEN OUDEN GROEP provided 40,000 m² of concrete road 

construction consisting of a ring road, a loading dock, 

and parking spaces. It is one of our specialisations. The 

challenge with this project was mostly in the lead time, 

namely in terms of the production speed of the concrete 

mortar. In England, the capacity of concrete plants is lower 

than in the Netherlands. In the Netherlands, we are more 

focused on efficiency and shorter construction times, 

and we have younger plants with larger capacities. In the 

Netherlands, we would work with a width of 10 metres at 

a time, while in England we were working with a width 

of 5 metres at a time. A high-quality outdoor hardening, 

resistant to frost and road salt, making it very durable, 

requiring very little maintenance! 

Application of concrete highway - Couvin (B) 

Client: 

BAM Contractors 

Implementation period: 2016-2018 

The work involved the application of two 8.6 km double 

lane concrete highways, including emergency lanes and 

ramps east of Couvin in Belgium. The highway is part of 

the E420, the main connection between Charleroi and the 

French border. 

Various structural works, including 190,000 m² of 

concrete hardenings, have been realised. The concrete 

hardenings consist of double-layer continuous reinforced 

concrete. The work of phase 1 was completed in late 2016, 

phase 2 in April 2017, and phase 3 will be completed 

in 2018. 

23


References 

References 

Refurbishment concrete HOV line / 

Huizingalaan - Eindhoven 

Construction of roundabouts 

Turnhoutsebaan - Goirle 

Client: 



Client: 

municipality of Goirle 


The Hoogwaardig Openbaar Vervoerbaan Huizingalaan 

is part of the HOV line that will run from WC Woensel to 

Ekkersrijt and from WC Woensel to Eindhoven Airport. 

The Huizingalaan needs maintenance. Because the 

Huizingalaan is part of the HOV network, the construction 

of separate bus lanes is part of the design. In 2015, we 

constructed the first part of the concrete bus lane (HOV). 

The work for the second part started in late April 2016, 

and the project was completed in early 2017. 

In 2015, a roundabout was built at the Turnhoutsebaan 

near Gorps Baantje and the Nieuwkerksbaantje. The 

four-month process was carried out to improve traffic 

safety and make the nature areas south of Goirle and Riel 

accessible. 

For the improvement of traffic safety, a second 

roundabout was also constructed near the Poppelseweg 

in 2017. To give the traffic between Tilburg and Poppel 

access at all times, a separate lane was built next to the 

Turnhoutsebaan. This assured the accessibility in an 

excellent way. The Turnhoutsebaan, the former N630 

between Tilburg and Poppel, was transferred to the 

municipality of Goirle by the province of North Brabant in 

2009, with the task of making this road Sustainable and 

Safe by 2020. 

24


2.1.3 Soil remediation 

When soil contamination is identified, it is necessary to proceed with remediation. The problem of contaminated soil has 

been in the news repeatedly. For example, some places in our country built residential areas on heavily contaminated 

grounds. 

Soil remediation is the process of freeing a piece of land from soil contamination. DEN OUDEN GROEP and BODAC 

can perform soil remediation with associated soil research, demolition, and sieving work. We excavate the soil if it is 

environmentally polluted. This is done in consultation with an environmental assistant. The contaminated soil (free of 

conventional explosives) can be discharged to a recognised processor. 

Most clients often see soil remediation as a financial risk. However, we can combine different specific and complex activities 

within a single project, so that you can work efficiently, cost-effectively, and with affordable rates: 

• Insulating waste deposits (seal); 

• Tank and soil remediation; 

• Groundwater remediation and monitoring; 

• Discharge of contaminated soil; 

• Sieving soil; 

• Environmental guidance and advice; 

• Taking care of relevant permits. 

Soil remediation in Antwerp 

25


References 

Covering landfill Meersteeg - Geldermalsen 

Remediation for refurbishment of NRE site - 

Eindhoven 

Client: 

Avri 


Client: 



The work involves the installation of an upper seal 

structure (in accordance with the Dumping Decree) in the 

eastern part of landfill Meersteeg in Geldermalsen. 

The work mainly consisted of removing part of the existing 

waste gas drainage system, equalising, profiling, and 

compacting the existing support layer and delivering and 

applying the upper seal structure Trisoplast, HDPE foil, 

rainwater drainage mat, and ground layer. A rainwater 

drain (wells, gutters, pipes) was also applied and the seal 

structure was sown with a grass mixture. 

The NRE site, former industrial and port area near the 

city centre, is being redeveloped. Eleven special factory 

buildings, remnants of the former gas industry, form 

the basis for the historic character of the NRE site at 

the Nachtegaallaan in the centre of the municipality of 

Eindhoven. 

The work involved the remediation and preparation 

(BRM) of the NRE site phase 2 through 4 in Eindhoven. 

The remediation consists of drainage and purifying 

contaminated groundwater and excavating and disposal 

of contaminated soil. According to experts who studied 

the contaminated soil under the former industrial site, 

there are no risks to public health during the remediation 

of the NRE site. 

26


2.2 UXO clearance (BODAC) 

The Dutch soil contains a large number of Conventional Explosives (CE) From World War II. The presence 

of ammunition in the soil poses a permanent danger to people and the environment. BODAC specialises 

in detecting and removing conventional explosives. 

2.2.1 Knowledge and advice centre 

When there are indications that a project site may contain unexploded ordnance (UXO), BODAC can conduct a (historical) 

research before earthmoving activities are carried out. The aim is to give a well-founded advice on the presence or absence 

of UXO and the necessary steps to be taken. This research is done according to Dutch WSCS-OCE certification and 

inconformity with the standards of the Dutch association of explosives detection companies, the Vereniging voor 

Explosieven Opsporing (VEO). 

27


2.2.2 Land soil UXO clearance 

We have various methods for detecting UXO: 

Manual surface detection 

Through manual surface detection, our specialised 

staff detect UXO using a magnetometer and/or a 

metal detector up to a depth of approximately 4.5 m 

below the ground. 

Non-real time surface detection 

Non-real time (computer-assisted) surface detection 

with multiple sensors makes it possible to scan large 

parts of your project locations in a relatively short 

time up to a depth of approximately 4.5 m below the 

ground. 

Depth detection 

Besides surface detection, BODAC can also perform 

depth detection up to a depth of approximately 18 m 

below the ground, both in land soil and underwater. 

28


2.2.3 Waterbed explosives detection 

Detecting and securing conventional 

explosives in an underwater environment 

is a difficult and challenging 

operation. Depending on the 

environment and the depth of the 

objects, BODAC will use underwater 

detection, depth detection, ROV 

(Remotely Operated Vehicle), or 

divers to detect, identify, move, 

and secure individual objects. Our 

diving equipment complies with the 

standards of WOD-SOE and IMCA. 

UXO detection in the new harbor of Zutphen 

29


2.2.4 Archaeology 

BODAC can carry out all facets of 

the archaeological research for you. 

It is often necessary to conduct 

archaeological research and research 

into UXO prior to development 

plans. Because BODAC offers both 

disciplines, you only have to deal 

with one contract party, which 

communicates and works much 

faster and easier. BODAC works 

according to the current version 

of the Dutch Archaeology Quality 

Standard (KNA) and is in possession 

of the BRL SIKB 4000 certificate. 

2.2.5 Aircraft recovery 

An aircraft recovery is a complex task 

that requires attention to human 

remains, conventional explosives, 

and archaeological finds. Because 

of these aspects, it is very important 

to work very accurately during an 

aircraft recovery operation. Because 

BODAC has unique screening 

systems, very small particles can be 

separated in the soil. This means that 

no object can be overlooked during 

an aircraft recovery operation. 

30


References 

Historical research UXO transport systems 

and sewer pumping stations north 

Client: 

Kragten 


Nordstream 2: PUXO 2X submarine pipelines 

and onshore facilities - Baltic Sea 

Client: 

NSea 


The historical research for the Transport Systems and 

Sewer Pumping Stations North project involved five subareas 

in the Betuwe, where Waterschap Rivierenland will 

carry out work on a number of sewage treatment plants. 

The total length of the grids is 20 km. 

The historical research focused on the extent to which the 

project area was involved in war operations in the 1940- 

1945 period. The Betuwe was one of the most affected 

areas during World War II. Ochten, Opheusden, and Zetten, 

among other places, were so heavily damaged that after 

the liberation, residents had to wait several months before 

they could return. The Betuwe was on the front line from 

September 1944 until the end of the war in May 1945. 

In addition to these war operations, the Betuwe was also 

under water for a long time: the Germans blew up the 

Rijndijk in early December 1944, which flooded the area 

between Tiel and Elst. The water not only drove Allied and 

German troops out of the area, but also erased many war 

traces such as craters. This made it difficult to interpret 

the aerial photographs from 1945. 

The Nordstream 2 project consists of two undersea 

pipelines with a diameter of 1,20 meters. The pipelines 

and attached onshore facilities cross through most of the 

Baltic Sea, from the Russian coast to the German coast. 

Throughout history the Baltic Sea has been the theatre of 

naval warfare. As a result of this fighting, many remnants 

of unexploaded ordnance (UXO) are still present in the 

seabed. Examples are mines, bombs from airplanes and 

torpedo’s. There are also several dump sites for munitions 

present in the Baltic Sea. One of these, near the island 

Bornholm, was used as a dumping ground for both regular 

and chemical munitions. These historical events, as well 

as present day military practice areas, make it necessary 

to conduct UXO surveys in the Baltic Sea. BODAC scanned 

the seabed with multibeam echo sonar (MBES), side-scan 

sonar (SSS), magnetometer and gradiometer equipment. 

The data was then analysed to provide a clear picture of 

unexploaded ordnance still present in the seabed. When 

necessary BODAC removed dangerous objects along the 

sea-corridor. 

31


References 

Nordlink: PUXO 516 km cable - 

Between Germany and Norway 

UXO clearance in Rotterdam 

Client: 

NOKA Offshore GmbH 


Client: 

Port of Rotterdam 

(municipality of Rotterdam) 


Noka Offshore GmbH is currently constructing a 

submarine HVDC-cable between Germany and Norway. 

These construction efforts are part of the 516 kilometre 

long NordLink power network which crosses German, 

Danish and Norwegian waters. Before the cable can 

be placed, it is imperative to survey the seabed for 

unexploaded ordnance (UXO). Noka Offshore has granted 

a part of these surveys to the joint combination BODAC/ 

N-Sea. Between the North-German city of Büsum and 

the Danish-German border the seabed has been scanned 

with multibeam echo sonar (MBES), side-scan sonar (SSS), 

magnetometer and gradiometer equipment. BODAC 

analysed the data of these scans to provide a clear picture 

of unexploaded ordnance still present in the seabed. When 

necessary BODAC removed dangerous objects along the 

sea-corridor. 

In order to increase the storage and handling capacity 

of the Koole Terminals in the port of Rotterdam, it was 

decided to realise an additional quay. In order to safely 

create the quay, it is necessary to first inspect the area for 

the presence of unexploded ordnance (UXO). This work has 

been executed by BODAC. Based on historical research 

of the area, it was determined that aerial bombs could 

be found up to 7 meters below sealevel at the terminal 

location. Using our own sophisticated equipment BODAC 

was able to detect anomalies up to 11 meters below 

ground level and ensure future safety at the construction 

site. Our specialized equipment made it possible to survey 

the area with minimal excavation work. This way the 

client is ensured that he can start construction of the new 

quay as fast and safe as possible. 

32


References 

UXO clearance polyvalent workplace - 

Melle (Ghent, B) 

UXO clearance Navy barracks - Vlissingen 

Client: 

TUCrail Belgian Rail Engineering 


Client: 

Rijksvastgoedbedrijf 

(Province of Zeeland) 


TUCrail Belgian Rail Engineering has commissioned BODAC 

to carry out clearance of unexploaded ordnance (UXO) near 

Gent in Belgium. In the First and Second World War many 

battles took place in this area and allied strategic bombers 

targeted the railroad area dozens of times between 1940 

and 1944. To create a safe working environment for 

the construction of the new multifunctional workplace, 

BODAC has conducted detection surveys. A variety of 

advanced survey equipment was used, including active 

& passive radar detection and ground penetrating radar 

systems. During the detection efforts various UXO-items 

were found from both World Wars. BODAC completed this 

first phase in 2015. Afterwards BODAC was commissioned 

for the second phase of the project, to remove overhead 

poles, clear all tracks and construct platforms so the 

construction of the workplace can commence. 

The Province of Zeeland, in close cooperation with the 

Ministry of Defence and the Rijksvastgoedbedrijf, is 

preparing the construction of the Michiel Adriaanszoon 

de Ruijter barracks in Zeeland. The barracks (almost 70 

ha in size), a new accommodation for the navy to be used 

from 2020, will be located east of the Buitenhaven in 

Vlissingen. In the context of preparations for the barracks, 

BODAC was commissioned by the Rijksvastgoedbedrijf to 

perform UXO clearance in an area of 41.6 ha. 

BODAC found five 500 pounders from World War II on the 

site. Vlissingen was the target of multiple heavy bombings 

during World War II. The Explosives Disposal Service blew 

up the bombs in a controlled explosion in July 2016. 

33


2.3 Production of soil improvers & biofuels 

2.3.1 Intake of organic and wood-like 

raw materials 

At our locations, over 450,000 tonnes of green 

waste and waste wood are taken in annually for 

the purpose of the production of soil improvers, 

biomass, and organic raw materials. Think 

of, for instance, grass, pruning wood, stubs, 

green waste, and waste wood that comes from 

municipalities, provinces, and Rijkswaterstaat, 

companies, and private individuals. 

Tree nutrition 

(191.000) 

Compost 

(210.000) 

Bark/Peat 

(41.000) 

Biomass 

(159.000) 

Commodity production 2017 (tonnes) 

Collecting green waste with modern equipment 

34


2.3.2 Cascading 

References 

When grubbing up and pruning trees, you have to deal with 

various wood streams. We are happy to help you carefully 

cascade the wood streams, so that the revenue is optimised. 

This results in added value for the entire tree. The wood 

streams consist of logs, branch/top wood, tree stumps, and 

pruning wood. 

Pharmaceutical products 

and premium chemicals 

Profit volume 

Food and Animal Food 

Chemicals and materials 

Fuels 

Green waste from Gooi and Vechtstreek 

Client: 

GAD 


Volume 

Energy and heat 

Energy and heat 

The GAD (Raw Materials and Waste Service) Gooi and 

Vechtstreek, as waste processor for the cooperating 

municipalities of Blaricum, Laren, Gooise meren, Huizen, 

Wijdemeren, Weesp, and SBS Hilversum, has put the 

specification on the market to have their 14,000 tonnes of 

collective coarse green waste processed annually. 

2.3.3 Composting 

Fuels 

materials 

and Chemicals 

Den Ouden specialises in processing green waste into 

high quality compost. Our main activity is managing the 

Food and Animal Food 

composting process from start to finish. Different types of 

premium chemicals 

and 

green waste Pharmaceutical products 

are processed into biomass and soil improvers 

(such as compost). 

The municipalities have the choice of depositing green 

waste directly at DEN OUDEN GROEP or to have us collect 

it at the GAD Regional Station in Crailo. Furthermore, DEN 

OUDEN GROEP switches out the green waste containers 

on the environmental routes. Sorting of the green waste 

by the municipality is rewarded through a rate system. 

In this work, DEN OUDEN GROEP excels in logistic 

flexibility and its central location, and DEN OUDEN GROEP 

delivers topsoil and tree substrates to municipalities that 

are mostly made of their own green waste. Furthermore, 

DEN OUDEN GROEP demonstrates that the biomass that 

is made reduces the necessary tonnes of CO 2 compared 

to fossil fuels. Finally, DEN OUDEN GROEP also provides 

a place for people with a distance to the labour market, 

a form of social return that is a standard part of our 

company. 

35


References 

Green waste from Rijnmond region 

Chip project streamline undyked Meuse 

Client: 

The municipalities of Maassluis, 

Vlaardingen, Brielle, 

Hellevoetsluis, Nissewaard, 

Capelle aan den IJssel, 

Barendrecht and Westvoorne. 


Client: 

Peter van Daal Cultuurtechniek 

en Groenvoorziening / 

Rijkswaterstaat Limburg 


Led by the municipality of Westvoorne, the various 

municipalities in the Rijnmond region have started 

working together to have their green waste processed by 

a green waste processor. The municipalities are Maassluis, 

Vlaardingen, Brielle, Hellevoetsluis, Nissewaard, Capelle 

aan den IJssel, Barendrecht, and Westvoorne. DEN 

OUDEN GROEP was granted this project by centrally 

locating its collection depot. This was achieved by 

concluding a partnership with SUEZ in the Waalhaven- 

Rotterdam. 

This unburdens the municipalities because there is no 

need for them to pre-sort and they can leave this to 

DEN OUDEN GROEP. The total volume of green waste is 

approximately 14,000 tonnes. DEN OUDEN GROEP also 

delivers substrates and soil improvers to the municipality 

of Rotterdam. This means the green waste of the Rijnmond 

municipalities is partially recycled as landscape substrate, 

tree ground or tree soil. 

The cooperation of engineering agency Arcadis, Peter 

van Daal Cultuurtechniek en Groenvoorziening, and DEN 

OUDEN GROEP is providing better protection against 

high water along the Meuse. To improve the flow of the 

Meuse in Limburg, the flood plains need to fill up more 

quickly in case of a flood. 

During the (chipping) work, a large amount of pruning and 

log chips was released. DEN OUDEN GROEP has cascaded 

the wood from the work area as a raw material to deposit 

it as high in the chain as possible. The client is very 

pleased with the cooperation and the result. 

36


3.1 Organic fertilizers 

Healthy soil is at the basis of our food 

production. 95% of our food is directly or 

indirectly produced via the soil. Healthy 

plants with lots of nutrients feed humans and 

animals. 

Middle East 

3% 

Africa 

8% 

Latin America 

1% 

A healthy soil mainly involves soil life, soil 

structure, and nutrients. Caring for organic 

substances is the most important thing 

growers should pursue worldwide. A soil with 

little organic matter and soil life is a dead soil. 

The products find their way across the world; 

about 95 percent is exported to approximately 

70 countries. 

Europe 

38% 

Sales area (worldwide) 

Asia 

50% 

3.1.1 About our fertilizers 

The organic Fertilizers are produced in Helmond (North Brabant) on the basis of organic raw materials from poultry and 

cattle. The production facility features state-of-the-art technology and runs under the supervision of a highly educated 

production team. The production capacity is approximately 60,000 tonnes or organic Fertilizer per year. 

Organic Fertilizers from FERM O FEED are convenient and fundamental organic Fertilizers with a proven yield. The stable 

organic material content is combined with a relatively high NPK content. Moreover, it is a 100% natural product. Organic 

Fertilizers are easily applied in the field. The pellets can be spread across the land with the same machine that is used for 

mineral Fertilizers. 

Fertilizer pellets 

The application of Organic Fertilizers 

37


3.1.2 About our products 

FERM O FEED produces a broad range of Organic Fertilizers, Organic Composite Fertilizers, Liquid Fertilizers, and Substrates. 

Our main brand for Organic Fertilizers is FERTIPLUS ® . 

The Fertiplus ® 

product family 

family 

The Fertiplus ® 

product family 

The different FERTIPLUS ® products (packaging) 

38


References 

Positive results from FERTIPLUS ® 

for fruit trees - Province of Zeeland (NL) 

Perfect pears - Portugal 

One of our agents in the Netherlands, R. van Wesemael 

BV, started a trial led by Jan van Dillen in 2011. 

This study was intended to determine the positive results 

of the use of FERTIPLUS ® in apple and pear breeding. They 

used FERTIPLUS ® 4-3-3 for the apples and FERTIPLUS ® 

4-2-10 for the pears. Additional nitrogen and ammonium 

sulphate were also added. 

A pear grower in the Bombarral area in Portugal, famous 

for the pear ‘Pêra Rocha’, is very satisfied with FERTIPLUS ® . 

Despite the difficult season, he could see the effects of our 

FERTIPLUS ® . The quality is perfect with minimal losses 

during harvesting. The vitality of the plant also ensures 

that there were no problems with diseases or fungus. 

The results were amazing. In addition to a higher yield 

and increasing the fruit size, there was also a higher intake 

of nutrients. In particular, the absorption of potassium, 

calcium, magnesium, and silicon was visible in the fruit. 

This was noticeable by the large size, improved hardness, 

taste, colour, and longer shelf life. You could really see that 

better mitosis had taken place. The use of FERTIPLUS ® 

brings more organic life into the soil. Increasing the soil 

life improves the absorption of nutrients. The structure 

of the soil improves, which increases the air and water 

permeability. The grower was very pleased with the 

FERTIPLUS ® product. 

39


References 

After the potato harvest, the sizes are 

significantly constant - Dominican Republic 

More yield and the uniformity of the carrots 

is excellent - Benin 

Manuel Martinez is the manager of a 72-hectare farm in 

the mountains of the Dominican Republic. The main crop 

is potato, and the season runs throughout the entire year. 

That is why all stages of the potato cultivation must be 

visible at the same time. When the potato is cut, they only 

add FERTIPLUS ® during the second batch, to reduce the 

risk of burning the seedlings on the cut edges. The use per 

hectare is 64 bags of 25 kg FERTIPLUS ® (1,600 kg/ha). 

When they mix FERTIPLUS ® with mineral Fertilizers, the 

use per hectare is 40 bags of 25 kg FERTIPLUS ® (1,000 

kg/ha). 

In collaboration with IFDC in the ‘2Scale project’, 

FERM O FEED has supported various projects in East 

African countries. One of the studies took place in Benin. 

FERTIPLUS ® was used to grow carrots. A dosage of 1,250 

kg/ha was used and compared to a dosage of 5,000 kg of 

local Fertilizer. The yield of FERTIPLUS ® was 30.5 tonnes/ 

ha against 20.6 tonnes/ha. The uniformity of the carrots 

was excellent, as was the length and diameter. By applying 

FERTIPLUS ® the yield increased by 50%. Another example 

which shows the effectiveness of FERTIPLUS ® . 

After just a few weeks, a significant difference in the 

size and intense green colour of the leaves of the potato 

plants is visible. After the potato harvest, the sizes are 

significantly more constant compared to their production 

without the use of FERTIPLUS ® , which also translates into 

a higher yield for the farmer. 

40


3.2 Soil improvers & growth site improvement 

Soil improvers are used to improve the soil structure and increase the soil fertility. The soil improver must 

be processed into the top layer of the soil so that plants grow better and healthier. The most important 

effect of a soil improver is ensuring good physical, chemical, and organic properties of the soil, which 

increases the soil fertility and allows plants to grow in an optimal environment. The range of DEN OUDEN 

GROEP includes the following soil improvers, tree granules, compost products, and tree nutrients: 

Soil improvers 

Greenspaces 

Substrado ® Potting Soil 

Substrado ® BBV 

Green Roof Substrate 

Tree Sand 

Tree Soil 

Peat 

Natural Compost 

Leaf Mulch 

Soil improvers 

Agriculture & Horticulture 

Natural Compost 

Humus Compost 

Farming Compost 

Substrado ® Fruit corps 

Substrado ® Vulkacompost 

Substrado ® Woodfibre 

RHP-Compost 

The current list of product information can be found on our 

website www.denoudengroep.com and in our extensive 

product catalogue. 

41


References 

Soil improvement for chrysanthemum 

cultivation - Bruchem 

Delivery of landscape substrates to 

Rotterdam 

Client: 

Janity Flowers B.V. 


Client: 

municipality of Rotterdam 


DEN OUDEN GROEP has provided 1000 m3 of Sylvester 

tree bark for chrysanthemum nursery Janity Flowers B.V. 

Janity Flowers took care of the transport themselves and 

used a self-designed car to counteract soil densification as 

much as possible. The tree bark was then slightly milled in 

the top later. The tree bark is perfectly suited for preventing 

compaction and rooting is being stimulated because of 

the open structure that is created in the ground. 

By first carrying out several trials with different products 

in big-bags, ranging from fine to coarse, the joint choice for 

Silvester Tree Bark Fraction 10-25 was made. 

Janity Flowers B.V. is a year-round chrysanthemum 

nursery founded in 1986. In 2005, the nursery moved to 

Bruchem, where a completely new 48,000 m² company 

was constructed that is still the most modern one in the 

Netherlands. 

DEN OUDEN GROEP supplies various types of soil 

improvers to the municipality of Rotterdam to ensure that 

nearly 600,000 trees and other greenery facilities remain 

in top shape. 

Trees in Rotterdam are often planted in the middle of an 

urban area under non-ideal conditions, such as hardening, 

on roofs of parking garages, and in roof parks. These trees 

have little underground growth space. In order to keep 

these trees and greenery in top shape, it is necessary to 

fill the tree or plant holes, lawns, and flower boxes with soil 

that is composed according to the right specifications. A 

good and stable product is very important for the medium 

term and the further future of the trees that need to grow in 

it. By applying high-quality soil improvers and substrates, 

Rotterdam ensures healthier and better quality trees and 

plants, and thus a healthier living environment for its 

citizens. 

This involves over 20,000 tonnes/year of tree sand, tree 

soil, tree granules and flower box substrate. All produced 

under the RAG-certificate. 

42


References 

Providing roof garden substrates for circular 

roof garden headquarters ABN AMRO 

in Amsterdam 

Soil improvers for Oosterpark - Amsterdam 

Client: 

Donkergroen B.V. 


Client: 

municipality of Amsterdam 


In collaboration with Donkergroen (a nationally operating 

organisation of creative green thinkers), DEN OUDEN 

GROEP has provided the roof garden substrate for the 

‘ABN AMRO Pavilion’ project at De Zuidas in Amsterdam. 

The old substrate in the garden of ABN AMRO has been 

supplemented with a mixture of volcanic rocks, sieved 

rubble, compost and coarse plant materials. The durable 

mixture that is created is 100% recyclable as a substrate 

for roof gardens. 

DEN OUDEN GROEP is the supplier of several specific soil 

improvers that we have in standardised production. In the 

case of Oosterpark, a number of products are not standard 

products, but we can offer a customised product in 

accordance with the specifications. Through a laboratory 

analysis, we showed that the product is composed exactly 

as the municipality of Amsterdam had envisioned it. This 

way, under BRL 9335-4, we can always offer a tailormade 

product in any field. 

The park is situated slightly lower than the surrounding 

districts, which means it has to process a lot of water. 

Moreover, the subsoil is fairly unstable because it is on 

top of peatland. The result is that the park literally washes 

away and continues to sink. With soil improvement, the 

soil rises and the park will stabilise. 

43

Dayenne van Overdijk - van der Veeken speaking 

If you like what you do, 

you never have to work! 

”I have been working at DEN OUDEN 

GROEP with much love and fun since 

September 2009. At the time, the family 

business took over Groenrecycling in 

Rosmalen from the family business of 

my parents, where I had already been 

working on the weighbridge since 

January 2005. I am very proud to be 

able to work for this beautiful family 

business! Those who already know me 

are well aware of this ;). 

I basically grew up in the green sector, 

and DEN OUDEN GROEP gives me all 

sorts of opportunities and challenges 

that allow me to grow personally. I 

am now an account manager and I 

sell soil improvers for public greenery, 

and I am like a spider in the web who 

feels involved in the entire company. 

Moreover, you regularly see me as the 

face of our company at trade fairs to 

promote ‘our’ company and share my 

passion. 

The best thing is that we connect 

to many target groups that have 

something to do with soil and nature. 

In many cases, one of our services 

and/or products can be of some use to 

both the green and grey sectors, which 

distinguishes us from the rest. It truly 

feels like ‘our’ company because we 

work with a great team of colleagues 

and are given all sorts of opportunities 

to think of a better solution for our 

relations together, with heart for the 

business.” 

Dayenne van Overdijk - van der Veeken 

Account Manager 

44


3.3 Groundcovers 

Few people consider weeding as a hobby, so prevent weeds with groundcovers. Groundcovers have 

many advantages; for instance, the soil remains moist for longer and does not dry out. Moreover, the soil 

particles do not splash up against the stems and leaves of your plant. The bacteria in the soil increase 

under the soil coverings and are converted into humus. 

We can offer you different types of groundcovers of all types and sizes: 

• Bark 

• Sawmill chips 

• Bedding 

• Lava 

The choice for tree bark means less filling and maintenance work and a decorative addition for any garden. The wood chips 

look fresh and healthy and give your garden a natural look. To increase comfort and liveability of various animal species, we 

have peat litter, stable litter, and sawdust. 

You can find more product information on our website www.denoudengroep.com and in our extensive product catalogue. 

Tree bark is very suitable as a cushioning soil for playgrounds 

45


3.4 Biomass 

With the term biomass, we mean the total of plant and animal materials in an ecosystem. The vegetable 

raw materials that fall under ‘biomass’ are used as biofuel for energy generation in power plants. In 

addition to biofuels, biomass can also be used for the production of Bio(Based) raw materials or biofilter 

material. 

Product Biofuel Bio resources BioBased Biofiltermaterial 

prototypes 

Log wood Chips ● ● 

Trimming Chips ● ● 

A-wood ● ● ● 

B-wood ● ● ● 

Shreds 

● 

Green overflow 

● 

Wood fibre ● ● 

Grass fibre 

● 

Root wood 

Tree bark 

● 

● 

Delivering biomass at the biomass plant 

46


3.4.1 Biofuels 

Biofuels are used for energy generation. It is a sustainable alternative to fossil fuels. Of course, biofuels are free of impurities 

and available in various shapes and types. We can supply under NTA-8080 (Better Biomass certification), which guarantees 

a sustainable origin of the wood (that is used as biofuel). Suitable streams are selected by means of strictly monitored 

collection. This way, we make sure that streams which are suitable for food production or the manufacturing industry are 

not used as biofuel. 

The international demand for biofuel is increasing. We produce biofuels at our own locations, but also in forests or at the 

locations of other companies. The CO 2 emissions are reduced if you situate the production close to the ovens. 

3.4.2 Biofilter material 

A biofilter can be used to purify air or water and may consist of rootwood, tree bark, peat, or coconut shells. Purification of 

the air or water is done by the microorganisms present in the filter. 

Woodchips used as biofilter media 

47


3.4.3 Bio(Based) raw materials 

Our soil is deteriorating and fossil fuels and energy sources will be exhausted in 

the short term. We are all responsible for this happening, but together, we can 

also achieve the turnaround. A new approach is necessary, because we have 

the responsibility to leave the next generation with a vibrant planet. In order 

to increase our value in this field, we will heavily invest in the production and 

delivery of BioBased products in the coming years. 

The BioBased prototypes are produced on the basis of (bio)polymer and 

(agricultural) residual flows such as (roadside) grass, natural grass, natural 

fibres, aquatic plants, bell pepper/tomato stems, and sugar beet pulp that are 

normally composted. 

Biomass as a Bio(Based) raw material is a very environmentally friendly 

choice: renewable and virtually CO 2 neutral. Bio(Based) raw materials are 

available as wood and grass fibres (optionally in pallet form), but also as A- 

and B-wood in various fractions. The collected wood can be used, with or 

without intermediate processing, as a Bio(Based) raw material in, for instance, 

the chipboard industry. This way, we give biomass a second life, so that the 

industry has to cut less trees. This raw material is sufficiently available yearround! 

The BioBased prototypes made of grass fibres which we produce and market with PaperWise and Millvision are: 

• Garden bench 

• Grid/fencing 

• Copying and letter paper 

Garden bench made of i.a. grass fibers 

Copying and letter paper 

48

Peter Bakker speaking 

A family business in heart and soul 

”You often hear that family businesses are special organisations that stand out within the Dutch business 

world, but are also special to work for if you are not part of the family. What makes it so special, even after 

20 years? Den Ouden is a versatile company with room for people who are motivated and want to move 

forward. We are continuously on the move. Lines are short and Den Ouden tries to be the best in every area 

where we are active. This can be in the field of sustainability, quality, environment, or social enthusiasm. In 

short, it is a company to love with an eye for nature, people, and the environment. For us as employees, the 

trick is to communicate this well to the outside world. Naturally!” 

Peter Bakker 

Account Manager 

49

4. Contact 

1 

A 

B 

DEN OUDEN GROEP 

(Main office) 

Hermalen 7 

5481 XX Schijndel, The Netherlands 

Postadres: 

P.O. Box 12 

5480 AA Schijndel, The Netherlands 

T +31 (0)73 543 10 00 

F +31 (0)73 549 83 60 

E info@denoudengroep.com 

www.denoudengroep.com 

www.fermofeed.com 

www.bodac.nl 

Production locations 

(exclusive collecting green waste) 

Location Heersjansdam 

Uilenvlietsehaven 1, 2995 DB Heerjansdam 

The Netherlands 

Location Drachten 

Tussendiepen 28, 9206 AD Drachten 


2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

Production locations 

Location Vlagheide 

Vlagheide 6C, 5482 NM Schijndel 


Location Land van Cuijk 

Beijers Bos 2, 5443 PL Haps 


Location West-Brabant 

Rijksweg Noord 8, 4735 TX Zegge 


Location De Peel/ROC 

Gerstdijk 6, 5704 RG Helmond 


Location Het Gooi 

Naarderstraatweg 6, 1399 VR Muiderberg 


Location Maasland 

Vliertwijksestraat 45A, 5244 NH Rosmalen 


Location Kreekrak 

Westelijke Schelderijnweg 1A, 4411 TC Rilland 


Location De Kempen (Poort 43) 

Pastoor P. Thijssenlaan 43, 6029 RL Sterksel 


Location Parkstad Brunssum 

Waubacherweg 11, 6442 PW Brunssum 


Location Belvédère Maastricht 

Industrieweg 4, 6219 NR Maastricht 


Location De Brabantse Wal 

Zonnekreekseweg 2, 4651 PM Steenbergen 


Location Midden-Limburg 

Kelperheide 26, 6037 SZ Kelpen-Oler 


Location Midden-Brabant 

Statendamweg 100, 4905 BP Oosterhout 


For the opening times of our branches: https://en.denoudengroep.com/contact/addresses 

50

4. Contact 

4. Zegge 

3. Haps 2. Schijndel (Vlagheide) 1. Schijndel (Main office) 

5. Helmond 

6. Muiderberg 

6. Muiderberg 

8. Rilland 

9. Sterksel 

10. Brunssum 

11. Maastricht 

12. Steenbergen 13. Kelpen 

51

Infrastructure 

Concrete roads 

Soil remediation 

UXO Clearance 

Collection of green waste 

Groundcovers 

Soil improvers Biomass Organic Fertilizers 

Naturally... 

www.denoudengroep.com

Business Presentation Den Ouden Groep 03-2018

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