Unexploded ordnances
The Dutch Working Conditions Act (Arbowet) defines remaining explosive devices from World War II as a special risk factor in field work. Prior to any excavation project, a site-specific risks evaluation is required. Explosives detection must be carried out in accordance with the activity-specific certification scheme for the detection of unexploded ordnances (WSCS-OCE). This map layer shows the areas with an increased risk of the presence of explosives from the second World War.
Dutch regulations require that excavation works be carried out in a way that protects trees and plants and avoids impacting growth. These rules are included in the Dutch Telecommunications Act as well as in municipal-level plans throughout the country. The tree root layer gives immediate insight into locations where trees are an obstacle for your project, giving you the opportunity to—at an early stage—prepare the best solutions for the whole route.
Tree roots
The soil type map layer provides insight into the soil structure in the planned route and a quantity estimate of the soil components released per soil type. This allows you to better estimate the required performance capacity, lead time, and costs prior to the work. For this map, we use data from national geological and soil studies, supplemented by information from our own thousands of soil quality studies. And this information is updated daily.
Soil types
The Dutch soil archive is protected by the Heritage Act (Erfgoedwet), which determined that archaeological remains in the ground must be preserved. Archaeological pre-examination may be required before starting an excavation project that will disturb the soil from a certain depth, usually 30cm (12in). This module gives you a direct view of locations in your project where additional regulations for protecting these archaeologically valuable elements will impact your plans.
Archaeological values
The groundwater level module estimates the most likely groundwater conditions you can expect throughout the entire route of your project. We’ve used data from approximately 40,000 measuring tubes in the Netherlands from which the groundwater level is determined frequently. This module shows the ground water position relative to the ground level in a five-by-five metre grid. This allows you to estimate the risk of digging below the groundwater level and whether or not you’ll need to drain or dewater a location.
Groundwater level
Tree roots
To comply with the legal obligations in the Netherlands, the environmental quality of the soil must be known prior to digging. The Dutch Working Conditions Act (Arbowet) requires that digging organizations protect their employees from contamination by any soil contaminants, and the Dutch Soil Protection Act (Wbb) prohibits the spreading of contaminants. With this module, we provide a summary map with clear and current safety classes for the entire routings of planned excavation works in the Netherlands. We use all publicly available soil quality data and the results from tens of thousands of studies that Stantec has done for our clients.
Soil quality
1/6
Groundwater level
2/6
Unexploded ordnances
3/6
Archaeological values
4/6
Soil types
5/6
Soil Quality
6/6
