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Survey of dioxins in soil (FY2004)

Last update date December 12, 2023

This page is a document that describes the survey results of dioxins concentrations in soil, among the materials released in a press release on the results of dioxins in the environment conducted in 2004 (FY16).

Purpose of the survey

From 2000, the city of Yokohama will be separated by a 1km mesh, and each mesh (340 mesh) will be surveyed in five years, and the survey results of 68 points conducted in 2004, the fifth year, will be announced.

Survey points and methods

The survey points were selected for parks, temples, and schools with bare land of a certain area suitable for sampling, and collected in accordance with the "Soil Survey and Measure Manual for Dioxins (Environment Agency: January 2000)" Analyzed.

Date of investigation

From November 26, 2004 to December 7, 2004

Survey results

  1. The concentration of dioxins in soil at 68 locations in the city ranged from a minimum of 0.0014 pg-TEQ / g to a maximum of 23 pg-TEQ / g, and the average was 1.9 pg-TEQ / g. The results of this survey conformed to the environmental standards of 1,000 pg-TEQ/g.
  2. Survey of dioxins in soil
Survey of dioxins in soil
Location numberSurvey pointLocation

Dioxin concentration
(Unit: pg-TEQ/g)

Kamisueyoshi Elementary School5-24-1, Kamisueyoshi, Tsurumi-ku0.11
Egasaki Hachimangu Shrine13, Egasakicho, Tsurumi-ku2.8
Yako Elementary School3-8-1, Yakou, Tsurumi-ku0.90
Market Elementary School1-13-1, Motomiya, Tsurumi-ku0.018
Shimoda Elementary School4-10-1, Shimodacho, Kouhoku-ku0.020
Suginami Park, Shimoda-cho3-2, Shimodacho, Kouhoku-ku0.012
Takada Elementary School1774, Takatacho, Kouhoku-ku0.88
Morito Hara Daiichi Park6-49, Hiyoshihoncho, Kouhoku-ku12
Hiyoshihoncho Daiichi Park5-9, Hiyoshihoncho, Kouhoku-ku6.9
10Tsunashima Elementary School3-11-1, Tsunashimanishi, Kouhoku-ku0.32
11Hiyoshidai Elementary School1-34-21, Hiyoshihoncho, Kouhoku-ku1.7
12Shinyoshida Machihara Park5587-4, Shinyoshidacho, Kouhoku-ku6.0
13Nitta Junior High School1256, Shinyoshidacho, Kouhoku-ku0.041
14Mukaihara elementary school student Amusement Park Children's Playground902, Shinyoshidacho, Kouhoku-ku0.28
15Tsunashima Park1, Tsunashimadai, Kouhoku-ku2.2
16Minowa Funashita Park2-10, Minowacho, Kouhoku-ku0.060
17Tarumachi Fudashita Park3-12, Tarumachi, Kouhoku-ku0.42
185, Tsunashimahigashi Park5-354-1, Tsunashimahigashi, Kouhoku-ku0.20
19Nagatsuta Daisan Park1-22, Nagatsuta, Midori-ku2.1
20Kitahatsusaku Daishi Park946-1, Kitahassakucho, Midori-ku0.097
21Ichigao Elementary School1632-1, Ichigaocho, Aoba-ku0.094
22Hyuga Park3-14-4, Edanishi, Aoba-ku1.4
233, Azamino Park3-4-3, Azamino, Aoba-ku23
24Yamauchi Elementary School1-4-4, Shinishikawa, Aoba-ku0.073
25Akata Nishi Park3-1-1, Azaminominami, Aoba-ku8.9
26Azamino Daiichi Elementary School4-6-1, Azaminominami, Aoba-ku0.10
27Fir tree park4-6-2, Azaminominami, Aoba-ku0.0060
28Bi Shigaoka Nishihojima Park1-5-8, Utsukushigaokanishi, Aoba-ku0.0061
29Utsukushigaoka Daini Park3-42, Utsukushigaoka, Aoba-ku0.28
30Susukino Elementary School3-4-1, Susukino, Aoba-ku0.45
31Ekoda Elementary School3-8-9, Ekoda, Aoba-ku0.35
32Motoishikawa Elementary School4-31-1, Utsukushigaoka, Aoba-ku0.11
33Utsukushigaoka Higashi Elementary School2-25, Utsukushigaoka, Aoba-ku0.0089
34Naracho Otadaira Park2880-4, Naracho, Aoba-ku0.59
35Kamoshida Daishi Park555, Kamoshidacho, Aoba-ku0.0068
36Nara Junior High School36-3, Sumiyoshidai, Aoba-ku0.14
37Katsura Elementary School1-4, Katsuradai, Aoba-ku0.0024
38Nara 3-chome City Nokubo Park3-4, Nara, Aoba-ku0.031
39Sumiyoshidai Daini Park24-4, Sumiyoshidai, Aoba-ku0.66
40Tachibanadai Park1-4-2, Tachibanadai, Aoba-ku18
41Aobadai Junior High School2-25-2, Aobadai, Aoba-ku0.087
42Akanedai Nishigaya Park2-20-1, Akanedai, Aoba-ku0.35
43Akanedai Miyanodai Park1-2-1, Akanedai, Aoba-ku0.089
44Tana Elementary School51-13, Tanacho, Aoba-ku1.7
45Moegino Junior High School4-1, Moegino, Aoba-ku0.090
46Moegino Elementary School16, Moegino, Aoba-ku0.14
47Higashi Ichigao Elementary School519, Ichigaocho, Aoba-ku0.0039
48Satsukigaoka Elementary School8, Satsukigaoka, Aoba-ku0.0033
49Umegaoka Park4, Umegaoka, Aoba-ku0.068
50Mitakedai Junior High School30, Mitakedai, Aoba-ku1.3
51Eda Elementary School694, Edaminami, Tsuzuki-ku0.72
52Nakagawanishi Elementary School1-3-1, Nakagawa, Tsuzuki-ku0.098
53Orita Fudo Park4-9, Edaminami, Tsuzuki-ku17
54Hachimanyama, Nakagawa Park7-13, Nakagawa, Tsuzuki-ku7.9
55Ushikubo Nozomigaoka Park3-16, Ushikubo, Tsuzuki-ku0.12
56Ushikubo Higashihime apple park2-3-13, Ushikubohigashi, Tsuzuki-ku0.062
57Ushikubo Higashi Natsumikan Park2-25, Ushikubohigashi, Tsuzuki-ku0.094
58Chigasakidai Elementary School13-1, Nagasaka, Tsuzuki-ku0.70
59Minamiyamada Elementary School2-27-1, Minamiyamata, Tsuzuki-ku0.21
60Tsukanooka Elementary School1-22-1, Edahigashi, Tsuzuki-ku0.037
61Kawawa Elementary School1463, Kawawacho, Tsuzuki-ku0.0014
62Kawawa Higashi Elementary School21-2, Fujimigaoka, Tsuzuki-ku0.012
63Yamada Elementary School3-29-1, Higashiyamata, Tsuzuki-ku0.0054
64Hayabuchi Park2, Hayabuchi, Tsuzuki-ku1.5
65Katsuta Daini Park266, Kachidacho, Tsuzuki-ku0.086
66Hayabuchi Hibari Park1-35, Hayabuchi, Tsuzuki-ku0.10
67A row of cherry blossom trees Hozuki Park7, Sakuranamiki, Tsuzuki-ku0.059
68Nakamachidai Kuwagata Park3-7, Nakamachidai, Tsuzuki-ku0.029

※Environmental standards for soil contamination: 1,000 pg-TEQ/g or less
(3) In this fiscal year, a survey (340 locations in total) that divided the entire city into 1km mesh was completed, but all locations met the environmental standards of soil.
Average value: 4.1pg-TEQ/g, Detected concentration range: 0.00045 pg-TEQ/g to 140 pg-TEQ/g

Future Actions

In 2005, we will conduct surveys of areas with relatively high concentrations among the survey results so far.

For inquiries to this page

City of Yokohama, Environmental Planning Bureau Environmental Conservation Department Water and Soil Environment Division

Phone: 045-671-2494

Phone: 045-671-2494

Fax: 045-671-2809

Email address: ks-dojo@city.yokohama.jp

Return to the previous page

Page ID: 365-012-146

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