Environmental risk classification of transport areas

Dangerous goods may be released into the environment when transported by road, for example: in the run-out of a tanker. On railways, the derailment of the tank wagon is also it’s possible. In this case, the transport of substances in the vicinity of the accident site depends on: significant environmental characteristics such as soil penetration, from the groundwater depth level to the ground surface, the directions of land-level drainage, and steepness and proximity to surface water drains and watercourses. Transport areas the risk classification charts these terrain characteristics in the immediate vicinity of traffic routes in the vicinity. The risk rating consists of four main categories, each with three subcategories. Below is a brief description of the conditions represented by each category and the risks of contamination targeting the environment. The soil categories A, B and C used are determined by the landlord and topography of the area. Gravel and sand areas of risk category A with characteristics: good permeability and low fluid retention. Ridges and edge formations rough parts fall into this category. The risk of contamination of groundwater is in particular: Great in AI class. Class AIII represents the connection areas of groundwater bodies from which either: the flow of groundwater or surface water to a body of groundwater. For example, groundwater areas limited Rocky Hills can be classified as AIII. Sandy soils of fine grain size belong to category B. Permeability in this category it is moderate, and soil species are able to hold some liquids. Examples include the periphery of groundwater areas and sandy moraines. Risk of slipping focus on groundwater as in class A. In areas A and B, Class I and Class II are distinguished by the level of groundwater. If the groundwater is less than six meters deep above the ground, the area belongs to the AI class. Areas where groundwater is deeper than six metres belong to class AII. This division, based on 6 meters, is due to groundwater contamination the quality of the control equipment used (low or deep technology). The biII areas are non-hazardous, so they include not only moraine areas but also rocky soils. In the BiII areas, the flowing liquid is likely to be transported in the direction of export; and in this case, the risk of contamination may concern, for example, open water drainage flowing in the overnight direction, surface water or water abstraction. Class C is the category of poorly penetrating and dense countries. This also includes: peatlands and artificial bottoms. The CI category generally includes groundwater areas: nearby clay soils, under which there may be layers of water leading to water. Class CII is common, especially in urban and motorway areas, as it contains artificial bases (interfaces, car traffic areas) and gently spent or flat clay, silt and fine grains the moraines. Class C represents comparatively in terms of environmental contamination low-risk areas; the main risk factor is the potential contamination of groundwater. In CI areas. The W-class differs from the other sections. The risk of contamination in its areas mainly directed at surface waters. Category W-category substances harmful to the environment the passage can be very rapid; contaminants can be either directly affected into the water or end up there with water flowing in an open bay. The Wii class represents ‘discovered’ groundwater, since this category includes, in particular, ridges groundwater ponds. The purpose of the risk classification is to assign only one risk category to each road section. However, in some cases it is justified to present two parallels on the same section of the road. it’s class. Examples include groundwater areas where water flowing in the open drain. Depending on the circumstances, there may be a risk of contamination either groundwater, surface water or both. If the soil penetration is, for example: reduced surface water contamination due to frost or very large amounts of liquid it may be a more significant risk factor than groundwater contamination. The data is part of SYKE’s open datasets (CC BY 4.0). Purpose of use: Planning and operational planning of routes for the transport of dangerous goods in situations where dangerous goods have been discharged into the environment For more information: https://geoportal.ymparisto.fi/meta/julkinen/dokumentit/LiikennealueRiskiluokitus.pdf The risk classification material for traffic areas was produced as part of the VAKSU project supervised by the Ministry of Transport and Communications, which also provided a web service for planning the transport of dangerous goods. The risk classification of traffic areas has been made in four parts and it has been compiled by Maa and Vesi Oy. In 2009, the ArcSDE database has been modelled and created in SYKE, where risk rating data from different years have been read. In addition, the data collected from the Finnish Road Administration on groundwater protections are stored as additional data.