Extracting solids from old project surfaces

Hello Experts
First, I am attaching a sample of the surfaces I created in an old project for which I do not have the PKTs.

Secondly, I am now showing a section of what I want to achieve; I want to extract the yellow and green hatched solid.

I cannot do this using cross-section reports or section-based material reports; I am required to report using solids only. Do you have any ideas on how to achieve this, or any suggested approach?

Thanks in advance!