The construction industry is a very important industry for creating human conditions to achieve our dreams, to support our vital social economy and to protect our affluent country and natural surroundings. Thus, as one of Japan's most prestigious construction companies, Nishimatsu will contribute to society with its renowned cutting-edge technology and expertise and will continue to maintain a strong foundation as a company to be handed down to the next generation.

Based on enterprising ideas, and by keeping a strong foundation as a company, Nishimatsu will make a positive contribution to society by protecting the environment.

1. Nishimatsu operates an original environmental management system based on ISO14001 at all branch offices in Japan and is continuously improving the environmental management system.
2. Nishimatsu abides by all pertinent laws and regulations, and other requirements.
3. Nishimatsu makes great efforts to establish important targets for minimizing environmental impacts and preventing pollution. Construction with "Less Material" and "Less Energy", "For By-Product", "Less By-Product", "Recycle" and "Proper Treatment".
4. Nishimatsu creates conditions for good communication around the site and protects the environment of the area.

In August 1995 the Hong Kong Branch received an ISO 9002 certification, and in November 1996 the Kanto Branch received an ISO 9001 certification. Since then, 12 domestic offices (including the Technical Research Institute and the Hiratsuka Machinery Works) have received ISO 9001 and ISO 14001 certifications and 5 overseas offices (U.K., Hong Kong, Singapore, Thailand and Philippines) have received ISO 9001 certifications (ISO 9002 in U.K., Hong Kong and Singapore). In December 2002, Nishimatsu Construction Co., Ltd. received ISO 9001 and ISO 14001 certifications covering all domestic branches for the efficiency of our management systems and for our goal of being a continuously improving company.

Employed at a landfill disposal facility, this Leak Detection System uses an electrical means to monitor the bottom liners in the landfill and identify the location of damaged portions for subsequent repair. Using the insulating character of the geomembrane bottom liner, the system identifies the damaged locations by measuring current distribution through plural installed electrodes. The system can quickly and precisely locate the position of leakage in the geomembranes through simple data processing and is not susceptible to electrical noise from surrounding facilities or to change of ground conditions attributable to groundwater variations. In the dual-layer geomembrane construction, the system monitors for damage by releasing an electrical current through the internal and external electrodes. The location of a leak is pinpointed by measuring electrical current distribution with sensor electrodes installed between the two geomembranes.

Nishimatsu focuses development efforts on green technology to alleviate the heat-island phenomenon in cities. In the civil engineering field, Nishimatsu promotes slope protection by planting vegetation on slopes, including those near expressways or around airports. In the building construction field, Nishimatsu aims to increase greenery on building rooftops and along walls. In these greenery projects, the sedum variety of succulent plants that survive well in dry conditions and possess other strongly resilient qualities is used. To prevent disruption of the environment and nature, Nishimatsu also focuses efforts on improving its production and distribution functions in addition to technological development to help make the earth a better place for future generations. Characteristics of the Sedum Planting Method are that the sedum: 1) Grows in small quantities of water, making its application possible in areas difficult to supply with water, including rooftops and walls. 2) Is able to thrive in rocky soils, making it difficult for weeds to grow and reducing upkeep expenses. 3) Saves labor on weed removal and fertilizing, making maintenance easy. 4) Strongly resistant to heat, cold, salt, alkalinity, dryness and shade. 5) Rooftop greenery needs to be lightweight, and Nishimatsu's sedum construction materials are lighter than that of other companies. Merits of sedum greenery in the landscape architecture field: 1)Dangerous weed removal work is unnecessary on expressway slopes and dividers. 2) Maintenance is inexpensive due to the near elimination of watering and fertilizing. 3) In green areas near airports, helps reduce the number of birds that subsist on various insects, decreasing the likelihood of birds flying into jet aircraft engines.

With environmental and other issues in recent years leading to a growing concern for the effective use of coastal areas, proposals have been made for the development of wave control structures that harmonize with natural surroundings, as well as for the construction of calm sea regions and artificial beaches. With these issues in mind, Nishimatsu has developed a new type of submerged breakwater called the Wave Trapping Artificial Reef (WATAR). WATAR is a subsurface wave neutralization structure, consisting of a first-stage reef, made of rubble mounds and jackets, and a second-stage reef made of an upper-level concrete slit structure. Waves that reach the first-stage reef have their energies magnified by the sudden decrease in water depth and are then broken up by the second-stage concrete reef. The broken waves pass through the slit of the second-stage concrete reef and the resulting internal disruption reduces their energy. In contrast to other artificial reefs, WATAR (1) is more effective at reducing wave height, (2) can be made narrower in its width of the upper portion of the reef, (3) has a lower impact on marine environments since it takes up less installation space, (4) requires less time for waterborne construction since the slit parts are made on land, and (5) can reduce beach erosion by deflecting waves back toward the shoreline. Additionally, by making the first-stage reef a leg-shaped structure, WATAR can be adapted to fit the topography of the seabed. WATAR also makes it possible to maximize the recreational use of a shoreline by creating a calm sea space.

Roots, driftwood or lumber generated from the grubbing and clearing operations at construction sites cannot be disposed of by incineration or landfill as they have been recently designated as industrial waste under the revised recycling laws of Japan. Thus, the disposal costs including transportation are quite high, so enhancing use of these materials has become inevitable. Under this Wood Recycling Method, otherwise unusable wood materials are crushed into wood chips at the site. Then by adding an agent to accelerate the fermentation process, the materials are turned into compost over approximately three months. The compost is used as mulching material for slope vegetation protection. For application of the compost, Nishimatsu has developed a new safe and automatic revolving nozzle mounted on the backhoe bucket, which eliminates the risk of injury to the nozzle operator. This method assures zero emissions on site as well as safety and efficiency in operation, and also keeps costs down by reducing the amount of industrial waste disposal.