From the Answers in a document to inform OKAMURA ever Inquiry, use the Earth pressure = 0.25 Mpa is the only page on which the calculation of the actual drilling does not cause subsidence, it can use the current value.
OKAMURA been informed of the document Answers to the Inquiry to Earth pressure = 0.25Mpa are just words on a page of paper. If drilling is not the cause of the subsidence. You can use the current