A soil excavating apparatus is disclosed for use in combination with a cleaningvacuuming machine having at least one high pressure fluid supply in the vacuum line. The educational game is comprised of a two dimensional single circular game board that features in each of the four corners plastic baskets for the purpose of holding the stars collected as rewards by the children. Volatile compounds are continuously vented during pretreatment. The damage region causes the butted junction to be leaky and conductively couples the overlapped back gates to each other and to the substrate. Advantageously, friction between the drill string and bore hole is reduced, leading to an increase in the drilling penetration rate.