13.020.70 - Environmental projects
ICS 13.020.70 Details
Environmental projects
Umweltprojekte
Projets environnementaux
Okoljevarstveni projekti
General Information
This Technical Report covers the specific requirements for sampling construction products to determine the release or emission of dangerous substances in their intended use. It is complementary to existing sampling standards and sampling instruction in product standards or test methods for construction products of CEN product TCs and EOTA committees which fall under the CPD.
The scope of this Technical Report covers all activities related to product sampling, starting with the initial planning of sampling until the delivery and formal transfer of the laboratory sample at the laboratory.
This Technical Report:
- does not deal with sub-sampling in the laboratory as a step towards the preparation of the test portion / test specimen );
- does not deal with the second sampling domain in which a sample is to be taken from the air (emission) or water (release) with which the test portion / test specimen has been in contact;
- does not deal with the statistical testing of a construction product against (legislative) limit values, nor does it deal with the definition of repetitive sampling, suitable for fulfilling requirements with respect to a minimum level of uncertainty in a series of test results.
This Technical Report focuses on obtaining a single sample. Repetitive sampling is outside the scope as the boundary conditions for routine testing against a limit are not yet defined (e.g. the necessary reliability). Despite the fact that repetitive sampling is not covered, the conditions provided in this Technical Report apply for an individual sample, as well as for a sample that is part of a series.
- Technical report57 pagesEnglish languagesale 10% offe-Library read for1 day
This document concerns the restoration of rivers, including their channels, riparian zones, and floodplains. The word ‘river’ is used as a generic term to describe permanently flowing and intermittent watercourses of all sizes, with the exception of artificial water bodies such as canals. Some aspects of landscape restoration beyond the boundaries of what are often considered typical river processes are also considered. This document focuses on ‘nature-based solutions’, which are ‘actions to protect, sustainably manage and restore natural or modified ecosystems that address societal challenges effectively and adaptively, simultaneously providing human well-being and biodiversity benefits’ (https://portals.iucn.org/library/sites/library/files/documents/2016-036.pdf).
A clear framework of guiding principles to help inform the planning and implementation of river restoration work is provided. These principles are aimed both at individuals and organizations wishing to restore rivers, and stress the importance of monitoring and appraisal. This document makes reference to existing techniques and guidance, where these are appropriate and within the scope of this document.
This document provides guidance on:
— the core principles of restoration
— the aims and overall outcomes of river restoration
— the spectrum of typical approaches to river restoration (the ‘restoration mode’) with a focus on those that are nature-based and restore both physical and ecological aspects
— identifying opportunities for restoration and possible constraints, with a focus on physical and natural rather than socio-economic aspects
— the different scales of restoration and how restoration works across different catchments and landscapes
— the importance of monitoring and appraising restoration work across the range of approaches and scales.
- Draft45 pagesEnglish languagesale 10% offe-Library read for1 day
River restoration may be defined as “the re-establishment of natural physical processes (e.g. variation of flow and sediment movement), features (e.g. sediment sizes and river shape) and physical habitats of a river system (including submerged, bank and floodplain areas)”. This definition, from the IUCN (NC UK) report on River Restoration and Biodiversity (Addy et al., 2016), will underpin the CEN standard. River restoration may be defined as “the re-establishment of natural physical processes (e.g. variation of flow and sediment movement), features (e.g. sediment sizes and river shape) and physical habitats of a river system (including submerged, bank and floodplain areas)”. This definition, from the IUCN (NC UK) report on River Restoration and Biodiversity (Addy et al., 2016), will underpin the CEN standard. The CEN standard on river hydromorphology (EN 14614: “Water quality – Guidance standard for accessing the hydromorphological features of rivers”) will provide the link to the approach approved for use under the WFD. (EN 14614 is at present subject to revision.) The scope of the standard should be broad, covering the varied reasons for undertaking river restoration, all spatial scales of restoration (river channels, riparian areas, floodplains, and set within a framework of catchment management), and those fields of study needed for planning and undertaking river restoration, such as hydrology, geomorphology, ecology and biology. The standard should address the benefits of river restoration for biodiversity, flood control, water quality, landscape, and human health and wellbeing, and should recognise the emphasis on ‘natural capital’ and on ‘nature-based solutions’ that are currently being advocated by many European governments. The standard should be aspirational, showing what can be achieved in the absence of constraints, while at the same time recognising the limitations that may restrict the outcomes of river restoration. The standard will not attempt to be overly prescriptive, because of the many types of rivers and streams that occur throughout Europe, but it should specify a set of minimum standards that are needed if river restoration is to be successful. It will recognise where good practice already exists and seek to build on it.
- Draft45 pagesEnglish languagesale 10% offe-Library read for1 day