Soil Test underwater requires a boat, Villa, and additional cashing pipes. It Will cause the large price of soil Checks. Also, additional qualified manpower is needed in soil testing underneath rivers or sea beds. Bentonite powder is needed to take care of The soundness of monotonous soil. ASTM D2166. https://deanwgqxe.blogdosaga.com/29461400/construction-soil-investigation-bd-things-to-know-before-you-buy