The selected bidder will conduct preliminary soils, materials and foundation investigations at the location of structures for the purposes of water table determination, materials locations, sub-grade evaluation, and foundation design. All standard and applicable tests required to adequately classify and identify the 'in-situ' soils and their characteristics shall be carried out in an approved laboratory by qualified professionals in accordance with the LGU Engineering Office requirements and international standards. For purposes of the concept design and bid proposal to be prepared by each prequalified bidder, the soil conditions typical for this area are to be assumed.