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Aquatic Classification

There are a number of significant environmental problems caused by a number of pressures, including diffuse and point source pollution, alterations to beds, banks and shores, alterations to water levels and flows and the presence of invasive non-native species. In order to measure these pressures and their potential effects, we use an aquatic classification system which covers rivers, lochs, estuaries, coastal and groundwater bodies. These are split into management units called water bodies, with a classification produced for each body (the number of water bodies between years varies slightly, as some water body boundaries are reviewed to ensure that they can be managed appropriately).

There are a number of significant environmental problems caused by a number of pressures, including diffuse and point source pollution, alterations to beds, banks and shores, alterations to water levels and flows and the presence of invasive non-native species. In order to measure these pressures and their potential effects, we use an aquatic classification system which covers rivers, lochs, estuaries, coastal and groundwater bodies. These are split into management units called water bodies, with a classification produced for each body (the number of water bodies between years varies slightly, as some water body boundaries are reviewed to ensure that they can be managed appropriately). We produce an annual Water Framework Directive (WFD) Classification for all the water bodies in Scotland. Classification results for 2007 to the current year can be found on the Water Classification Hub. Read the State of Scotland's Water Environment 2024 summary report (MS Word, 1.17 MB). Most of our water environment is already in a good condition and subject to fewer pressures than most other E

Technical guidance

Further technical guidance This page brings together a number of ancillary guidance documents and previous email bulletin information relating to modelling of marine fish-farms for CAR licence applications. Auxiliary biomass sampling transect In areas where the tidal residual current is weak, the auxiliary transect (site-specific sampling 2) may be aligned along a bearing reciprocal to the primary

Zero Waste

SEPA works with the Scottish Government and Zero Waste Scotland to achieve the objectives and targets of the Zero Waste Plan, published in 2010. We have a wide range of responsibilities including regulating waste management activities such as landfills, incinerators and the export of waste, administering the producer responsibility schemes for packaging, WEEE and batteries, collecting and interpre

Modelling

Marine aquaculture modelling Computer modelling is used as a guide to determining licensed discharge quantities of anti-parasitic chemicals and organic waste arising from marine fish-farm operations. The modelling tools promoted by SEPA provide robust predictions in most cases, requiring relatively little site-specific information. Nevertheless, the quality of the model outputs is dependent upon g

Technical concepts

Part IIA introduces a number of technical concepts and some key concepts are considered in this section. A number of methods and models are available to assist in the derivation of site specific assessment criteria, as highlighted in the other "technical concepts and tools" sections

Part IIA introduces a number of technical concepts and some key concepts are considered in this section. A number of methods and models are available to assist in the derivation of site specific assessment criteria, as highlighted in the other "technical concepts and tools" sections Part II A introduces a number of technical concepts and some key concepts are considered in this section. A number of methods and models are available to assist in the derivation of site specific assessment criteria, as highlighted in the other 'technical concepts and tools' sections. Site specific risk assessment A risk assessment represents the structured gathering of information in order to for

Environmental monitoring and assessment

Radioactive substances are used routinely in Scotland for medical diagnosis and treatment, research, energy generation and industrial processes. Under the Environmental Authorisations (Scotland) Regulations 2018 (EA(S)R), we regulate these activities including discharges to the environment. We are responsible for ensuring that public radiation doses as a result of authorised radioactive discharges

Exempt activity returns

SEPA gathers data annually on the type, quantity and geographical origin of the waste handled from operators of the following ‘complex’ exempt activities. Paragraphs 7, 8(2), 10, 46 and 50. Paragraphs 9 and 19 where the volume of waste used exceeds 2,500 cubic metres Paragraph 12 where the volume of waste used exceeds 10 tonnes per year. Operators are asked to submit their data returns usin

Land

Through its ability to filter and retain nutrients, land helps to protect air and water quality, support habitats and enhance biodiversity. Healthy, well-managed land also plays an important part in flood risk management.

Through its ability to filter and retain nutrients, land helps to protect air and water quality, support habitats and enhance biodiversity. Healthy, well-managed land also plays an important part in flood risk management. We are transitioning to a new website, and some content from this section is now on our Beta site. Land quality – defined by its ability to sustain and fulfil a variety of uses – is vital to health and wellbeing. Through its ability to filter and retain nutrients, land helps to protect air and water quality, support habitats and enhance biodiversity. Healthy, well-managed land also plays an

Radioactive substances

Regulation of radioactive substances in Scotland

Regulation of radioactive substances in Scotland Environmental authorisations (Scotland) Regulations 2018 What are we able to do? We can now accept: Applications for an EASR18 authorisation (please contact sepa.org.uk/contact). Online notifications EASR18 for orphan source or managed radioactive substances (only IAEA category 5 that: exceed 200 kBq; tritium sources exceeding 20 GBq; and electrodeposited source. Radioactive substances in IAEA ca

Waste site information

Description of the type of data held about waste sites and why we collect it.

Description of the type of data held about waste sites and why we collect it. Scottish waste sites and capacity tool Information Reporting years Last updated Landfill sites and capacity (Annual) 2014 - 2024 January 2026 Waste sites and capacity (Annual) 2014 - 2024 January 2026 Site return data (Quarterly) Q1 2007 – Q4 2024 January 2026 Waste sites and capacity information This Scottish waste sites and capacity tool provides an annual summar

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