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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 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

SEPA Planning

What we do SEPA have various statutory responsibilities for land use planning in Scotland and cross-border. Through these responsibilities, we deliver against SEPA’s five strategic priorities - net zero, climate resilience, water environment, resource efficiency and business environmental performance. In our planning role, we aim to help: Protect Scotland’s environment and communities from harm.

Submit data

Air Scottish Pollutant Release Inventory (SPRI) Radioactive substances Our radioactive substances data return forms were revised in March 2026. EASR sealed source data return (Excel, 49 kB) EASR radioactive waste data return(Excel, 80 kB) EASR intention to transfer radioactive waste/contaminated items for the first time (MS Word, 202 kB) Offshore data return (Excel, 59 kB) Waste Waste da

Previous classification schemes

Before the introduction of the Water Framework Directive, SEPA had a number of classification schemes which we used to report the status of Scotland's water environment.

Before the introduction of the Water Framework Directive, SEPA had a number of classification schemes which we used to report the status of Scotland's water environment. Before the introduction of the Water Framework Directive, SEPA had a number of classification schemes which we used to report the status of Scotland's water environment. Classification schemes Coastal water quality Estuarine water quality Loch water quality River water quality Water quality classification results 2006 2005 2004 2003 2002 2001 1996 - 2000 classifications River classification E

Waste data

SEPA is responsible for reporting national waste statistics to the Scottish Government and European Union among others. As regulator, SEPA also has a duty to assess whether waste management sites comply with the conditions of their licence or permit. To do this, SEPA collects and verifies data from a number of sources, mainly: Operators of all licensed and most permitted waste management sites Op

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

Forms and guidance

Forms and information Reservoir (Scotland) Act 2011 blank registration form All new reservoirs, and any reservoirs regulated under the Reservoirs Act 1975 are required to be registered with SEPA. To register your reservoir with SEPA please use the registration form. Ceasing to be a reservoir manager If you cease to be the manager of a registered controlled reservoir, you are required to notify us

Business waste data

Publication Reporting year When published Business waste data 2021 2021 June 2023 Business waste data 2018 2018 July 2020 Business waste data 2017 Methodology 2017 2017 May 2019 Business waste data 2016 Methodology 2016 2016 July 2018 Business waste data 2015 Methodology 2015 2015 Sept 2017 Business waste data 2014Methodology 2014 2014 Business waste data 2013Methodolog

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Disclaimer and terms and conditionsAll intellectual property rights are owned by SEPA or its licensors. The Controlled Reservoirs Register cannot be used for commercial purposes, by value added resellers or for income generating purpose. A full list of terms and conditions is available from the SEPA website or reservoirs@sepa.org.uk. You may only use the Controlled Reservoirs Register for your own

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