Manteca sets its own stormwater standards for paved areas. In the version from 2015, parking areas with a high risk of pollutants washing off have to be surfaced with Portland cement concrete or something equivalent, and in lower-risk areas the city allows permeable pavement, which lets rain soak through, to cut down on runoff. Those standards can change, so check the current version with the City of Manteca.
The soil type named for Manteca is moderately deep to hardpan, a hard layer below the surface, and moderately well drained, on low terraces. On lots around here, that's why I want to know how deep the hard layer sits and where the water goes before we plan the base, because a slab is only as steady as what's under it.
We're based in Manteca and work in the cities around it in San Joaquin and Stanislaus counties, so the same planning goes into a lot in Lathrop or Stockton. The properties we see run from small rentals to shops with delivery traffic, and the questions don't change. Who uses the lot, and what's underneath it?