Central Nippon Expressway Company Limited Tokyo Regional Head Office Hatano Construction Office (Kanagawa Prefecture Hadano, Hisanaga director Sato) is, on February 13, 2013, 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.
When the Shin-Tomei Expwy (western Kanagawa Prefecture) is constructed, the committee will consider the investigations and examinations that have been conducted so far, and future investigations, based on the situation of groundwater and springs (hereinafter referred to as "groundwater, etc.") around the planned route. We discussed the planning and maintenance measures.

• (1) Examination of the impact on the Hadano groundwater basin
• (2) Examination of the impact on the surrounding groundwater due to the construction
• (3) Monitoring plan study
• (4) How to proceed with future analysis of Matsuda Town and Yamakita Town