A spoil heap that cannot go anywhere
The dig for a drainage run on a brownfield site produced material that looks different from the rest. It needs classifying before it can go to a tip. Your contracts manager arranges samples. The lab sends the results to the consultant, who forwards them to your office. The tip wants them in their format and asks a question about one determinand. By the time the tip accepts, the heap has sat in the way of the next dig for over a week.
On one job that is a nuisance. On a site with several stockpiles and material types, it becomes a programme problem.
Why classification is slow
Classification involves several parties, each doing their own step well: whoever takes the samples, the lab, often an environmental consultant, the tip, and your office. Nobody holds the whole chain, so the handovers between them are where the time goes. The site cannot see where things are, so it cannot plan around it.
- Samples are taken without a clear record of which stockpile they came from.
- Lab results go to one person and are forwarded by email.
- Each tip wants the information in its own format.
- Acceptance and price are agreed by phone and not recorded.
- Site does not know which stockpile can go where.
What waiting spoil costs
Stockpiles in the way slow the dig and block access for other trades. Plant sits idle or double-handles material. Wagons are booked and cancelled. The wrong material risks going to the wrong tip because the site did not know which heap was which. And the cost of disposal is uncertain until acceptance comes through, which makes it hard to tell the main contractor what extra disposal will cost.
The disposal tracker we build
- Each stockpile is recorded on a phone with its location on the site plan, a photo, the area it was dug from and an estimated volume.
- Samples are linked to their stockpile when they are taken, with a reference the lab will use.
- Lab results are read from the report when they arrive, by email or the lab's portal, and filed against the stockpile.
- The results pack is sent to the tips you use, in the format each wants, from one place.
- Tip acceptance, the material description it was accepted under and the price basis are recorded against the stockpile.
- The site sees, on the plan, which stockpiles are cleared to go and to which tip, and wagons are booked against that.
- Waiting times at each step are visible to your contracts manager, so a stuck step is chased.
| Stockpile | Step | Waiting on |
|---|---|---|
| SP1, drainage run north | Accepted | Nothing, cleared to go |
| SP2, basement dig | Results received | Tip acceptance |
| SP3, made ground by boundary | Samples taken | Lab |
| SP4, topsoil | Keep on site | Reuse in landscaping |
How material is classified, and what your obligations are, is for your environmental consultant and advisers. We track the process and the paperwork; we do not interpret results.
A site that knows where each heap goes
Every stockpile has a status the site can see. Lab results and tip acceptances are in one place, not in forwarded emails. Wagons are booked only for material that is cleared, to the tip that accepted it. Your contracts manager can tell the main contractor what extra disposal is likely to cost, with the evidence behind it, sooner.
Does spoil wait on your sites?
- Stockpiles sit on site waiting for results or acceptance.
- Lab results are forwarded between several people by email.
- Site does not know which heap can go where.
- Tip acceptance is agreed by phone and not recorded.
- Disposal costs are unclear until the end.