My response wasn't meant to sound terse - apologies if it did. I find the textbooks that I referred to quite useful for foundation engineering (particularly Bowles Foundation Engineering - it's excellent) and hoped that you would find the answer that you were looking for in either. I just felt...
Have you notified the relevant regulatory authority? They may help with selection/approval of an appropriate remedial technology. In agreement with the above you should seek professional advice - an assessment of the extent of the soil/groundwater contamination should be made using appropriate...
What geotechnical laboratory testing have you undertaken to confirm the soil parameters and your design? Have you determined the location of the groundwater table? Have you carried out slope stability analysis to verify your design?
These are the risks in your approach!!! You need sound...
Ishvaaag,
For your records, laboratory CBR tests are also common practice in the UK and, I would imagine, around the globe. You were referring to standard compaction test (Proctor) which is used to control density of soils placed in the field for earthworks control, which is a different matter...
Basford,
In-situ CBR tests are common practice in the UK for geotechnical site investigations and suggest you read the relevant British Standard for In-situ testing of soils for background information (think it'BS1377:Part 9 - I can email you a copy if you like). Check the US Army Corps of...
Mogens,
I would be interested to know if your need for clarification of "Approved" is based on contractual argument between Contractor and Purchaser?
Regards,
Brendan.