Central Nippon Expressway Company Limited Tokyo Regional Head Office Hatano Construction Office (Kanagawa Prefecture Hadano, Hisanaga director Sato) is, on September 4, 2012, Shin-Tomei Expwy in construction during the period, Shin-Tomei Expwy Kanagawa Prefecture west The Groundwater Countermeasures Committee (Chair: Toru Imada, Professor Emeritus, Tokyo Metropolitan University) was held.
The committee has conducted the investigations and examinations that have been conducted so far and future investigations when constructing the Shin-Tomei Expwy (western Kanagawa Prefecture), taking into account the situation of groundwater and springs (hereinafter referred to as "groundwater") around the planned route. We discussed the planning and maintenance measures.

• (1) Examination of monitoring plan
• (2) Consideration of measures for water sources around the planned route
• (3) Impact study on Hadano groundwater basin
• (4) How to proceed with future hydrological surveys in Matsuda Town and Yamakita Town