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The term "soil contamination" is used to refer to a diverse range of soil-related problems. Daiseki Eco. Solutions is a comprehensive provider of soil contamination solutions, offering consulting, testing, analysis, remediation, and a number of other optimal solutions to customers facing soil contamination problems.

Daiseki Eco. Solutions offers prompt and economical service through a nationwide network of experts backed by years of technical expertise acquired in dealing with soil contamination issues. We also guaranteed security for confidential information.

With offices in Tokyo, Yokohama, Nagoya, and Osaka, Daiseki Eco. Solutions is prepared to serve customers anywhere in Japan. What is more, we are the only company specializing in soil contamination countermeasures listed on the Tokyo Stock Exchange.



The term "soil contamination" is used to refer to a diverse range of soil-related problems. Daiseki Eco. Solutions handles more than 1000 soil contamination cases a year, and provides customers with optimal solutions that accommodate every budget and land use as well as with the benefit of our extensive experience dealing with municipal governments.

Material surveys and survey planning as well as local gas, surface layer, and boring surveys are all performed by all our expert staff using company equipment, enabling Daiseki Eco. Solutions to provide prompt and cost-effective services.

Daiseki Eco. Solutions maintains laboratories staffed by experienced experts using the latest equipment. As a certified land surveyor, Daiseki is capable of providing speedy and cost effective analysis of soil conditions as well as high-level component analysis of groundwater or recyclable waste.

Our extensive expertise in recycling industrial waste enables us to use detoxification and other recycling technologies in performing eco-friendly, cost-effective soil remediation.

Contaminated soil is washed to remove harmful metals such as lead, arsenic and cadmium,so that the soil can then be used for things such as backfill material.
Safety management is thoroughly maintained by officially authorized analysis performed on every 100m3.
The separated granules that contain the majority of contaminants are efficiently collected and then recycled for use in raw material for making cement.

Daiseki Eco. Solutions operates three recycling centers capable of handling a total of 1,000,000 tons of refuse annually, and where contaminated soil is sorted and processed into material suitable for use by cement manufacturers.

Soil that has been contaminated by VOCs (Volatile Organic Compounds´╝ëare cleansed using a heating-extraction process. After removal of VOCs the purified soil can then be used for backfill.
This effective method for recycling has been attracting much attention.

Options for on-site remediation includes the Fenton process as well as hot soil and bioremediation techniques. Daiseki Eco. Solutions is capable of providing the optimal technology for any on-site remediation project including purification of groundwater.


Company name Daiseki Eco. Solutions Co., Ltd.
Incorporated on 1 November 1996
Employees Employees 99 (as of 1 March 2010)
Business activities Soil contamination surveys, contaminated soil remediation, industrial waste collection and processing, environmental analysis, recycling of mercury, environmental consulting, recycling of plasterboard
Located at Headquarters:
Funami-cho 1-86, Minato-ku, Nagoya, Aichi, Japan / Zip code:455-0027
Tokyo office
8F, Shibaura 1-14-19, Minato-ku, Tokyo, Japan / Zipcode:108-0023
Osaka office
Minami Okajima 7-1-82, Taisho-ku, Osaka, Japan / Zip code:551-0021
Kyushu office
Minami Futashima 4-13-3, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan / Zip code:808-0109

Nagoya Recycling Center
located in Shinpo-machi,Tokai-shi, Aichi Prefecture
Yokohama Recycling Center
located in Tsurumi-ku, Yokohama, Kanagawa Prefecture
Osaka Recycling Center
located in Taisho-ku, Osaka, Osaka Prefecture
Toshihiko Ninomiya, president


1996 Daiseki Co., Ltd. Spins off its engineering department to create the subsidiary Daiseki Plant, which then branches out into the soil remediation business, utilizing expertise in testing, analysis, and recycling acquired from its parent company.

The enactment of the Soil Contamination Countermeasures Law in 2003 provides additional impetus to an already growing market. Daiseki responds to this opportunity by increasing personnel and reorganizing its operations in expanding its business.

June,2004 Daiseki Eco. Solutions completes construction of its first recycling center in Nagoya.

October,2004 Daiseki Eco. Solutions completes construction of its recycling center in Yokohama, serving the greater Tokyo area.
Recognizing the importance of risk management in communicating to clients the diverse kinds of soil contamination countermeasures actually performed onsite, Daiseki strengthens its consulting services.

2007 Daiseki Eco. Solutions completes construction of its recycling center in Osaka.
Having established recycling facilities in the three major urban markets for soil contamination solutions, Daiseki continues to provide customers with remediation services and solidify its expertise through the successful completion of numerous projects.

2008 Daiseki Eco. Solutions Co., Ltd. is listed on the Tokyo and Nagoya Stock Exchange.

2009 Green Arrows Central Co.,Ltd. begins waste plasterboard recycling business operations.

2010 Kyushu office established.



Daiseki Co., Ltd.

(Listed in section one of the Tokyo and Nagoya Stock Exchanges.)

Location Funami-cho 1-86, Minato-ku, Nagoya, Aichi, Japan / Zip code:455-8505
Industrial waste processing; resource recycling; environmental maintenance, improvements, and disaster prevention; certified environmental assessment; construction lubricants; concrete mold lubricant; fuel oil sales; paint remover
Homepage http://www.daiseki.co.jp/english/
Green Arrows Central Co., Ltd.
Location Shibata-cho Honowari 213-7, Tokai-shi, Aichi, Japan / Zip code:476-0001
Recycling of waste plasterboard
Hokuriku Daiseki Co., Ltd.
Location Uchiki-cho Higashi 302-2, Kanazawa-shi, Ishikawa, Japan / Zip code:920-0377
Manufacture of lubricants as well as sales of petroleum products
Daiseki MCR Co., Ltd.
Location Hiraide Industrial Park 38-25, Utsunomiya-shi, Tochigi, Japan / Zip code:321-0905
Lead refining and recycling of batteries
System Kiko Co., Ltd.
Location Shibaura 3-8-10, Minato-ku,Tokyo, Japan / Zip code:108-0023
Washing of storage tank facilities, including other related operations