Traditional geotechnical boreholes cover a very narrow but deep slice of the soil, whereas test pits cover a broader area of land despite being shallower. We recommend test pits in comparison to boreholes because they generally provide more information at a lower cost. Test pits are less intrusive to the site environment and do not require heavy machinery to operate. In effect, more of your budget can be spent on important subsurface testing to investigate the overall state of the soil in the proposed solar project area.