環境公害センター List of Products and Services

What is PCB? PCB stands for polychlorinated biphenyl, which is an artificially created chemical substance that is primarily oily. It has characteristics such as being difficult to dissolve in water, having a high boiling point, being resistant to thermal decomposition, being non-flammable, and having high electrical insulation properties. Additionally, due to its chemically stable nature, it was used in various applications such as insulating oil for electrical equipment, heat transfer fluids in heat exchangers, and non-carbon paper. However, due to its property of being easily soluble in fats, it gradually accumulates in the body and has been reported to cause various symptoms, leading to a ban on both its production and importation. PCB-containing Coatings It is known that PCB was added as a plasticizer in some chlorinated rubber-based paints. These paints were used for coating steel structures such as bridges and buildings during the period of rapid economic growth, and currently, these structures are in need of repair or renovation. In October 2019, the "Measurement Methods for Low Concentration PCB Containing Waste (4th Edition)" was published by the Ministry of the Environment, which specifies that measurement should only be conducted using mass spectrometers such as GC/HRMS as the analytical method.

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What are dioxins? Dioxins is a collective term that includes polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and coplanar polychlorinated biphenyls (co-PCB). There are 75 types of PCDD, 135 types of PCDF, and 12 types of coplanar PCBs, and their toxicity varies by isomer. Toxicity of dioxins Even among the 29 types of toxic dioxins, the toxicity varies. The most toxic, "2,3,7,8-tetrachlorodibenzo-p-dioxin," is assigned a value of 1, and the toxicity of other dioxins is expressed relatively. This relative coefficient is called the Toxicity Equivalence Factor (TEF). The analysis results are the sum of the toxicity equivalents (TEQ) for each isomer, calculated by multiplying the measured concentration for each isomer by its Toxicity Equivalence Factor (TEF).

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**Soil Analysis Based on the Basic Environmental Law** The environmental standards for soil under the Basic Environmental Law do not apply to soil related to places where contamination is clearly recognized as being solely due to natural causes, as well as to sites for the accumulation of raw materials, landfills for waste, and other specified items, where substances are currently being accumulated for the purpose of use or disposal. **Soil Analysis Based on the Soil Contamination Countermeasures Law** The Soil Contamination Countermeasures Law mandates soil investigations triggered by land alterations of a certain scale or the cessation of businesses handling hazardous substances. If contamination is discovered, measures such as decontamination are to be taken based on the judgment of the prefectural governor, in order to prevent health hazards to humans. **Flow of Soil Contamination Investigation** Soil contamination investigations must be conducted by designated investigation agencies. The investigation is divided into phases 1, 2, 3, and 4, and it is mandatory to report the results to the prefectural governor.

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Water discharged from facilities with specific installations is required to be emitted at concentrations below the wastewater standards. The substances specified in the wastewater standards are broadly classified into two categories. One includes items that may cause harm to human health (health items), and the other includes items that indicate pollution status (living environment items). 【Water Quality Inspection Based on the Sewerage Act】 The Sewerage Act applies when discharging wastewater from facilities with specific installations into public sewer systems. 【Water Quality Inspection Based on the Sewage Treatment Plant Act】 Discharge from sewage treatment plants is regulated by the "Sewage Treatment Plant Act." There is a "Article 7 Inspection" conducted within five months after three months of use, and an "Article 11 Inspection" conducted once a year. 【Environmental Water Analysis】 Environmental water refers to natural waters such as groundwater, river water, lake water, and marine water. Environmental standards related to water quality pollution are established for these waters.

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【Water Supply and Simple Water Supply】 The water supplied by water service providers is subject to mandatory inspection under the Water Supply Act. 【Drinking Water Quality Inspection】 Specific buildings such as entertainment venues, stores, offices, and schools with a certain floor area must conduct drinking water quality inspections. 【Reuse Water Quality Inspection】 Water used for irrigation, landscaping, cleaning, and flushing toilets, which includes recycled wastewater, rainwater, treated sewage, and industrial water, is referred to as utility water. This utility water must be supplied with necessary sanitary measures in place. 【Water Tank Cleaning】 For water storage tanks with an effective capacity exceeding 10㎥, it is mandatory to conduct cleaning once a year and water quality inspections three times a year (once within six months × 2, and once for 12 disinfection by-products from June 1 to September 30).

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The Earth we live on does not belong only to humans. It is only through the coexistence of various organisms that the concept of "Earth" is established. Our company helps facilitate coexistence with other organisms through biological surveys.

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The Environmental Pollution Center Co., Ltd. can accommodate both the official PCB measurement method and the simplified PCB measurement method established by the Ministry of the Environment.

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Asbestos has been widely used as a building material due to its excellent physical properties. However, there is also the issue of its carcinogenicity, which may not become apparent until decades later. This is why asbestos is referred to as a "silent time bomb." 【Features】 〇 Asbestos and regulatory measures 〇 Investigation of the asbestos content in building materials 〇 Investigation of the concentration of asbestos fibers in the air 【Applications】 〇 Asbestos surveys in buildings, etc. For more details, please download the PRF materials or contact us by saying, "I saw it on Ipros."

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Dioxins are substances that are unintentionally produced during the synthesis of chemical substances and the combustion of waste, and they are generally very stable and persistent in the environment. To clarify the spread of contamination by dioxins, it is necessary to understand the contamination levels in various media such as the general atmospheric environment, water bodies, and soil.

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Water quality analysis Air analysis and odor analysis Noise and vibration measurement Work environment measurement and building air environment measurement

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