Hi Sophia,
I've worked in Widnes which has deposits of Galligu, an industrial byproduct from soda production. This material was generally blue or yellow but I also saw purple and white variations.
Blue billy, another industrial byproduct, usually found associated with gas works, has a distinctive blue colour, which I've found can stain a surrounding soil matrix.
Hope that helps,
Rhys
Rhys Pyke
Geoenvironmental Engineer
Tier Environmental Ltd
Chadwick House, Birchwood Park, Warrington, WA3 6AE
-----Original Message-----
From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Sophia Norfolk
Sent: 05 July 2018 12:55
To: [log in to unmask]
Subject: Soil colours
Dear all,
Thank you to those who have recently taken part in my questionnaire - the results are very interesting!
I've been working through some of the questions and many of you have said that describing colour is difficult during logging. As part of my research to standardise colours, I have been researching different colours that can be present within soils. If anyone has encountered interesting or unnatural colours within soils during a ground investigation due to contamination or other sources and knows what has caused the colour, I'd be very interested in including it in my project. Any pictures you have will also be very helpful.
Kind regards,
Sophia
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