45.Environmental Business Bureau Sakae Factory Refurbishment Project

Ring Health Examination No. 135
December 22, 2000

Examination Report

The opinions from conservation's point of view regarding the environment stipulated in Article 23, Paragraph 1 of the Yokohama City Environmental Impact Assessment Ordinance concerning the Environmental Impact Assessment Preparation Document and Environmental Impact Assessment Report concerning the Sakae Factory Refurbishment Project are as follows:

The Mayor of Yokohama

Hidenobu Takahide

Description

No. 1 Target Business

1 Name and Address
Name: Yokohama-shi
Representative: Hidenobu Takahide The Mayor of Yokohama
Address: 1-1, Minatocho, Naka-ku, Yokohama-shi

2 Name and Type of Business
Name: Environmental Business Bureau Sakae Plant Renovation Project
Type: Construction of waste treatment facilities

3 Position of Business
1570-1, Kamigocho, Sakae-ku, Yokohama-shi

Review opinion

As a result of examining the environmental impact assessment preparation documents, environmental impact assessment documents, and procedures prepared by the business operator, please pay attention to the following matters based on the business characteristics and the environmental characteristics of the surrounding area.

1 Basic matters

（1） Environmental Business Bureau Sakae Factory Renovation Project (hereinafter referred to as “this project”)

• Full renewal of aging incineration facilities on the same scale
• Increase incineration ash and incinerated fly ash to detoxify, stabilize, and recycle resources, and to reduce the burden on the environment.
• Installation of state-of-the-art treatment facilities to strengthen environmental conservation measures, including controlling dioxins emissions.
• Increase power generation capacity for further effective use of thermal energy
• Increase the existing factory building for these facilities and expand the new building.

It's something to do.
Therefore, since this project is basically a renovation project, the amount of pollutants emitted into the environment will be reduced by introducing the latest equipment shown in the project plan and strengthening environmental conservation measures. However, given that it is located in a complex terrain and that it will operate for a considerable period of time after the renovation, it is important to carefully consider measures to minimize the environmental impact when renovating.

（2） As one of the factors that greatly affect the total amount of air pollutants, etc., the amount of waste and the quality of waste can be cited, it is necessary to further promote measures to reduce and recycle resources.

（3） In demolition work, there is a high possibility that harmful substances will be contained in the residuals inside the plant, and the amount of work is large. Therefore, during construction, due consideration should be given to the environmental impact on the surrounding area, and careful construction is required.

（4） Although the incineration residue treatment facility has a track record of operation in Japan, it has little experience of the same type and the same size. Therefore, when introducing it, it is necessary to grasp the amount of air pollutants generated and consider the exhaust gas treatment method accordingly. It is important to ensure safety, etc., and it is necessary to thoroughly consider from the planning stage based on the results of melting experiments.

（5） Regarding changes in the impact of the Sakae Plant on the atmospheric environment before and after the renovation, the analysis of current concentrations, differences in effective chimney heights, the increase of existing plant buildings, the effects of downstream vortex by the new building (downwash), the behavior of the transfer and diffusion of exhaust gas in complex terrain, and the degree of reduction in pollutant emissions were carefully examined.

• Regarding the current concentration, there was no clear effect on existing facilities based on analysis results by wind direction etc.
• Regarding the height of the effective chimney, the amount of exhaust gas increases after renovation, which is advantageous for the increase in exhaust gas, but on the other hand, due to a decrease in exhaust gas temperature and discharge speed, the effective chimney height is expected to be slightly lower overall.
• According to the wind tunnel model experiment, the degree of raising the existing factory building and the occurrence of down-washing and down-drafting by the new building is about the same as before renovation.
• Regarding the transfer and diffusion of exhaust gas, considering that the planned site is in complex terrain, we conduct wind tunnel model experiments and outdoor diffusion experiments, and estimate the ground concentration by numerical simulation using this information. In general, the maximum landing concentration is relatively likely to appear near the chimney in complex terrain, and such phenomena have been observed in outdoor diffusion experiments, but numerical simulations do not reproduce such trends. The maximum landing concentration near the chimney seems to have appeared in the current situation before the renovation, but since these are thought to be mainly due to topographic downdrafts, there is no reason to worsen this concentration especially after the renovation. However, further efforts are needed to improve the emission outline in order to reduce the maximum landing concentration in the vicinity as much as possible.
• Contaminant emissions are expected to be significantly improved as a result of comparing and examining the actual emissions before renovation with the management targets after renovation and the latest emissions at the Tsurumi and Asahi plants.

Based on the above, it is assumed that renovation will not deteriorate the air quality, but further efforts should be made in operation management, etc. to improve the surrounding air environment.

2. Individual matters

（1） Under construction

A. Air pollution, water pollution, waste and generated soil

(a) As measures to prevent the scattering of dust associated with demolition work, temporary enclosures around the outer periphery and watering water are listed.However, since there is a high possibility that harmful substances will be contained in the residues of the plant equipment, `` Waste Incineration Facility Demolition Prevention of Health Damage Due to Dioxins in Demolition Work "(Notice of Labor Standards Bureau No. 561 of the Department of the Department of the Department of the Department of the Department of the Department of the Department of the Department of the Department of the Department of the Ministry of the Department of the Department of the Ministry of the Ministry of the Ministry of the Ministry of Defense) and Labor) and comply with related to comply with related laws and regulations) and comply with related laws and regulations. In addition, work outdoors should be kept to a minimum.

(b) Since the Sakae Factory was built in the early 1950s, a thorough survey of the use of asbestos was conducted, and the locations used were described as "Guidelines for Renovation and Demolition of Buildings Using Asbestos (Asbestos) (Yokohama City Environmental Conservation Bureau) Properly process and dispose of it.

B. Local Communities

In the Bon and equinoctial week, where many visitors come to the adjacent cemetery, it is desirable to avoid traffic congestion and calm the cemetery, so consider the construction process and construction type at these times.

（2） At the time of existence and operation

A Air Pollution

(a) In order to improve the air environment around the planned site, it is necessary to further control the emission of pollutants. Therefore, always grasp the latest exhaust gas treatment technology and actively introduce technologies that can be introduced. In particular, careful consideration of incineration residue treatment facilities at the planning stage, including the treatment method before connecting to the incinerator flue.
In addition, strive for proper operation and management of incinerators, residue treatment facilities, and exhaust gas treatment equipment.

(b) In the plan, the effective chimney height is expected to decrease slightly compared to the current situation. In this location, it is considered that the topographical effect in the process of rising exhaust gas and the effect of proximity buildings will be large, so increase the effective discharge rate to avoid this as much as possible.

(c) In order to contribute to the improvement of the atmospheric environment in the surrounding area, it is desirable to introduce low-emission vehicles in garbage collection vehicles, relay transport vehicles, etc. Therefore, when renewing these vehicles, etc., strive to introduce low-emission vehicles fueled by natural gas, liquefied petroleum gas, and gasoline, and install exhaust particulate removal equipment for diesel vehicles that use light oil.

B. Plants and animals

The planned site is designated as a suburban green area conservation area, scenic area, etc., and it is hoped that the area will be greened as much as possible.

C Landscape

Considering that there are many green spaces around the planned site, it is necessary to consider the existence of artifacts such as buildings as little as possible in terms of landscape. Therefore, design should be devised for the existing factory building lifting section and new building, and color should be examined for buildings and chimneys including these.

D Safety

Since the incineration residue treatment facility operates a high-temperature melting furnace, it is necessary to give special consideration to disaster prevention. Therefore, in addition to known safety measures, thorough measures should be taken with reference to cases such as steel and aluminum smelting, which have similar electric melting furnaces.

3 Ex-post investigation

（1） Air pollution

Monitoring of the emission of air pollutants is carried out at the flue exit, but in order to comply with the management target values, in order to achieve lower concentration emissions, it is important to understand changes in the concentration of exhaust gas from the exit of the incinerator and the residue treatment facility to the flue exit, and to use it for operation management.
Therefore, at the beginning of operation, it is necessary to fully understand the behavior of exhaust gas according to operating conditions and analyze these results to utilize it for proper operation management.

（2） Soil contamination

Soil contamination surveys have not been mentioned as post-survey items, but since it is necessary to grasp the status of soil contamination in the area around the factory, conduct soil contamination surveys of dioxins before and after operation. The survey points should be discussed with related organizations as necessary.

4 Opinions of Other Local Governments

The planned site of this project is close to Kamakura City and Zushi City, and a part of both cities will be the target area, so we discussed with both mayors based on Article 53 of the Yokohama City Environmental Impact Assessment Ordinance. . Based on this consultation, as a result of inquiring opinions from the viewpoint of environmental conservation, the following opinions were sent by Mayor Kamakura.

Today, the amount of waste generated from local communities is increasing quantitatively and diversifying qualitatively. In these treatments, we strive to reduce the impact on the surrounding environment as much as possible. It is required to secure a comfortable living environment for local residents, such as by working to reduce waste generation, reduce and recycle resources. The facility is also close to the Kamakura city area and there is concern about its impact. Therefore, when conducting the project, we will strive to provide accurate information to Kamakura citizens and consider the atmospheric environment etc. described in the environmental impact assessment report. We will make every effort to implement considerations and environmental conservation measures to be taken.
If there is a significant environmental impact that could not be predicted during construction or after the start of operation, please take care to take appropriate measures.

In implementing this project, consideration should be given to these opinions as well.
In addition, Mayor Zushi sent a response saying, "There is no particular opinion to point out."

[Reference] Procedure progress

1 Inspection of the Environmental Impact Assessment Preparation Document and Submission of Statement of Opinion

Inspection location: Environmental Impact Assessment Section, General Affairs Department, Sakai conservation Bureau
Sakae Ward Office General Affairs Department Ward Administration Promotion Division
Kanazawa Ward Office General Affairs Department Ward Administration Promotion Division
Environmental Local Government Division, Planning Department, Kamakura City Office
Ofuna Branch, Kamakura City Hall
Zushi City Office Environment Department Environmental Management Division
Inspection period: From February 25, 2000 to April 10, 2000
Opinion: Submit 6,156 copies from 1,544 citizens, etc.

2 Inspection of Environmental Impact Assessment Report and Submission of Statement of Opinion

Inspection location: Environmental Protection Bureau General Affairs Department Environmental Impact Assessment Section
Sakae Ward Office General Affairs Department Ward Administration Promotion Division
Kanazawa Ward Office General Affairs Department Ward Administration Promotion Division
Environmental Local Government Division, Planning Department, Kamakura City Office
Ofuna Branch, Kamakura City Hall
Zushi City Office Environment Department Environmental Management Division
Inspection period: From June 15, 2000 to July 14, 2000
Opinion: 6 submissions from 4 citizens, etc.

3 Business Briefings

From 18:30 to 20:30 on March 24, 2000 22 attendants Yokohama Municipal Hongo Elementary School
March 25, 2000 From 14:00 to 16:00 attendees 72 No Shichiri Elementary School, Yokohama City
March 26, 2000 From 14:00 to 16:00 attendees 13:00 Yokohama Municipal Kamariyaminami Elementary School
From 18:30 to 20:30 on March 28, 2000 10 attendees Chuo community hall, Kamakura City

4. Statement of Opinion

May 26, 2000 Statement of Opinion 6 Kanagawa-jichikaikan