Abstract
The investigating point survey is performed in the soil contamination survey. The investigating point survey divides an investigation area into a mesh, and determines a point. An investigating point sometimes exceeds 100 points. The investigating point survey requires time and a labor. Therefore, cost reduction is required. We developed the investigating point survey system. The system has the navigation technique that can be used easily by oneself. And the system has the RTK method that is high precision satellite positioning. So, the cost of the system was cut down.