I have not seen this question about base/subbase addressed here yet.

I have read the comment fill materials are part of 31 2000 Div. and not counted as materials but what about base courses, subbase for asphalt and concrete paving? CSI MasterFormat puts Bases within section 32 1000 Paving, which is an included section for materials. Can we assume soil preparations like aggregate, stone, subbases or bases for asphalt and concrete should be considered Earth Moving classification "excavation and fill" instead of the included "Base" classification? What about for 32 9000-is topsoil for seeding considered "fill/earthmoving" or is it considered a "base, subbase"? And if it's considered "fill/earthmoving" what does the classification mean when it says Bases for Div. 32 1000?

Is this example correct?
For example, a project with asphalt paving and turf grass installation should include the material costs of the asphalt, asphalt paint, grass seed, straw-mulch or netting but should not include all the special base aggregate that goes beneath asphalts and the topsoils that are for the turfgrass because those aggregate mat's are considered "earth moving" or "fill" Is this correct thinking?
Thank you, -Matt