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mvossmail11 May 2016 11:04Hello everyone,
I mentioned this briefly in another thread, but I think this part belongs here.
We are facing the decision of whether to buy and renovate a 1960s house or not. Unfortunately, the plot was previously covered by a Dutch tar company with nearly 200 sqm (2,150 sq ft) of tar.
Does anyone have experience with these tar layers? We estimate that the mixture exceeds limit values and is classified as "tar-containing," and that the layer is about 8-10 cm (3-4 inches) thick. As far as I can tell, breaking it up isn’t the biggest challenge – disposal is probably much more complex, right?
Does anyone have a rough price estimate for something like this? Assuming we have 200 sqm (2,150 sq ft) of 10 cm (4 inches) tar-containing asphalt on top of gravel only. We want to remove and dispose of the asphalt. If we consider only the asphalt, that’s roughly 20 m³ (700 cubic feet), so a large container.
What price range are we talking about for demolition and disposal? Could this be managed within 5,000 - 8,000 €?
Thanks very much for your help.
I mentioned this briefly in another thread, but I think this part belongs here.
We are facing the decision of whether to buy and renovate a 1960s house or not. Unfortunately, the plot was previously covered by a Dutch tar company with nearly 200 sqm (2,150 sq ft) of tar.
Does anyone have experience with these tar layers? We estimate that the mixture exceeds limit values and is classified as "tar-containing," and that the layer is about 8-10 cm (3-4 inches) thick. As far as I can tell, breaking it up isn’t the biggest challenge – disposal is probably much more complex, right?
Does anyone have a rough price estimate for something like this? Assuming we have 200 sqm (2,150 sq ft) of 10 cm (4 inches) tar-containing asphalt on top of gravel only. We want to remove and dispose of the asphalt. If we consider only the asphalt, that’s roughly 20 m³ (700 cubic feet), so a large container.
What price range are we talking about for demolition and disposal? Could this be managed within 5,000 - 8,000 €?
Thanks very much for your help.
P
Portoalegre12 May 2016 03:40Off it goes to the next asphalt mixing plant. It has been used as recycled material for years.
Portoalegre schrieb:
Send it to the nearest asphalt mixing plant. It has been used as recycled material for years. Nonsense!!! Tar must be disposed of properly. Analysis costs around 100 euros. Disposal about 50 euros per ton. 200 x 0.1 x 2.5 = 50 tons x 50 euros =....
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mvossmail12 May 2016 08:41Thank you for the information! I’ve done quite a bit of research myself by now and arrived at similar conclusions...
If anyone is facing a similar problem without much prior knowledge, here are my findings:
Disposing of an asphalt surface can be expensive, but how expensive depends on various factors. Two factors allow a rough estimate.
1) Volume and weight. Container services usually charge by cubic meter, while waste disposal companies charge by ton. To get a rough idea of how much asphalt you’re dealing with, I found the following formula online (no guarantee...):
Area in m² * thickness in m * 2.5 = estimated weight in tons.
Example: for a 10cm (5 inches) thick asphalt layer over 100m² (1,076 ft²), you can roughly estimate the weight as 100 * 0.10 * 2.5 = 25 tons. Of course, this depends on many factors, but it provides a very basic idea.
The volume depends on the degree of crushing — the more it’s broken up, the more fits into the container. However, container cost usually isn’t the main driver of overall expense...
2) Contaminant load. Asphalt consists mostly of stones and a binder. In earlier years, tar was often used as the binder, but nowadays bitumen is almost exclusively used (tar is largely banned). Unfortunately, mixes with tar were common. The problem with tar is its contaminant load — the level of this contamination determines disposal costs.
Uncontaminated asphalt can be handed over to an asphalt mixing plant, usually free of charge. Otherwise, disposal costs are around 5–10 €/t.
Contaminated asphalt is subject to special regulations and is significantly more expensive to dispose of. Contamination is determined by an analysis (around 50–150 €), focusing on the concentration of polycyclic aromatic hydrocarbons (PAHs) in the asphalt. Up to 25 mg/kg is considered unproblematic; above this, the material is classified as contaminated. Disposal prices then rise quickly — at 26 mg/kg, costs are already 20–50 €/t, depending on the provider.
Contamination levels can be much higher. Depending on the disposal company, there are different tiers and widely varying costs. For example, I contacted the local landfill — they offer both the analysis and disposal. For contamination up to 5,000 mg/kg, the cost is 33 €/t plus about 150 € for two containers. There may be special permits granted for smaller quantities of asphalt, which could reduce costs further.
Quick test
To determine if the asphalt is contaminated, two quick tests can help.
1) Smell test: Create a fresh break edge and smell it. If it smells somewhat like tar machines, then tar is likely present. Bitumen and stones are mostly odorless; tar has a strong smell...
2) Color test: Spray white (solvent-based!) spray paint on the fresh break. A brownish discoloration suggests the presence of tar.
Costs
We have 200 m² (2,153 ft²) of asphalt. Currently, we expect the removal itself to cost about 3–5 €/m² (roughly 1,000 € for excavator + operator). To save costs, debris should be loaded directly into containers, which could bring disposal costs to about 2,000 € if everything goes well. Overall, the project should be doable for about 5,000 €, even if the asphalt is contaminated.
Be sure to compare container services and landfills in your area. I received an offer from a container service charging 80 €/t. They don’t differentiate on price above 25 mg/kg of contamination. So, comparing is definitely worthwhile.
I hope this helps someone. Prices from 2016, central NRW (North Rhine-Westphalia).
If anyone is facing a similar problem without much prior knowledge, here are my findings:
Disposing of an asphalt surface can be expensive, but how expensive depends on various factors. Two factors allow a rough estimate.
1) Volume and weight. Container services usually charge by cubic meter, while waste disposal companies charge by ton. To get a rough idea of how much asphalt you’re dealing with, I found the following formula online (no guarantee...):
Area in m² * thickness in m * 2.5 = estimated weight in tons.
Example: for a 10cm (5 inches) thick asphalt layer over 100m² (1,076 ft²), you can roughly estimate the weight as 100 * 0.10 * 2.5 = 25 tons. Of course, this depends on many factors, but it provides a very basic idea.
The volume depends on the degree of crushing — the more it’s broken up, the more fits into the container. However, container cost usually isn’t the main driver of overall expense...
2) Contaminant load. Asphalt consists mostly of stones and a binder. In earlier years, tar was often used as the binder, but nowadays bitumen is almost exclusively used (tar is largely banned). Unfortunately, mixes with tar were common. The problem with tar is its contaminant load — the level of this contamination determines disposal costs.
Uncontaminated asphalt can be handed over to an asphalt mixing plant, usually free of charge. Otherwise, disposal costs are around 5–10 €/t.
Contaminated asphalt is subject to special regulations and is significantly more expensive to dispose of. Contamination is determined by an analysis (around 50–150 €), focusing on the concentration of polycyclic aromatic hydrocarbons (PAHs) in the asphalt. Up to 25 mg/kg is considered unproblematic; above this, the material is classified as contaminated. Disposal prices then rise quickly — at 26 mg/kg, costs are already 20–50 €/t, depending on the provider.
Contamination levels can be much higher. Depending on the disposal company, there are different tiers and widely varying costs. For example, I contacted the local landfill — they offer both the analysis and disposal. For contamination up to 5,000 mg/kg, the cost is 33 €/t plus about 150 € for two containers. There may be special permits granted for smaller quantities of asphalt, which could reduce costs further.
Quick test
To determine if the asphalt is contaminated, two quick tests can help.
1) Smell test: Create a fresh break edge and smell it. If it smells somewhat like tar machines, then tar is likely present. Bitumen and stones are mostly odorless; tar has a strong smell...
2) Color test: Spray white (solvent-based!) spray paint on the fresh break. A brownish discoloration suggests the presence of tar.
Costs
We have 200 m² (2,153 ft²) of asphalt. Currently, we expect the removal itself to cost about 3–5 €/m² (roughly 1,000 € for excavator + operator). To save costs, debris should be loaded directly into containers, which could bring disposal costs to about 2,000 € if everything goes well. Overall, the project should be doable for about 5,000 €, even if the asphalt is contaminated.
Be sure to compare container services and landfills in your area. I received an offer from a container service charging 80 €/t. They don’t differentiate on price above 25 mg/kg of contamination. So, comparing is definitely worthwhile.
I hope this helps someone. Prices from 2016, central NRW (North Rhine-Westphalia).
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