Good afternoon members,
I have a slightly unusual one and am hoping someone may be able to offer some advice.
We have been asked by the contractors at a university site to investigate the risk of an old cast iron pipe which is connected from their laboratory to the foul sewage. The contact is worried about any residual chemicals that may be left within the pipe and the potential risk this may cause to any site workers. They wish to remove the pipe for disposal.
Previously the idea of swabbing the inside of the pipe for analysis was mentioned however this could pose a risk to the sampler, as well as only reaching a small amount of the pipeline. Alternatively it has been suggested that a water sample is collect from ‘flushing’ water through the pipe, which is then collected at the foul sewer end for analysis. However, we are unsure whether this sample would be representative and what the results could be compared to.
At the moment we do not have any information as to what type of lab it is and historically what they may have used. Additionally, no staining is visible within the soils surrounding the pipe.
Has anyone been involve with a similar undertaking before and could offer guidance.