# Commission Implementing Decision (EU) 2020/2009 of 22 June 2020 establishing the best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions, for surface treatment using organic solvents including preservation of wood and wood products with chemicals (notified under document C(2020) 4050) (Text with EEA relevance), Division BAT 34: In order to reduce emissions from delivery, storage and handling of treatment chemicals, BAT is to use technique (a) or (b) and all of the techniques (c) to (f) given below.

Extent: E+W+S+N.I.

Technique
Description
(a)
Back-venting
Also referred to as vapour balancing. Vapours of solvents or creosote which are displaced from the receiving tank during filling are collected and returned to the tank or truck from which the liquid is delivered.
(b)
Capture of displaced air
Vapours of solvents or creosote which are displaced from the receiving tank during filling are collected and led to a treatment unit, e.g. an activated carbon filter or a thermal oxidation unit.
(c)
Techniques to reduce evaporation losses due to heating up of stored chemicals
When exposure to sunlight may lead to evaporation of solvents and creosote stored in above-ground storage tanks, tanks are covered by a roof or coated with light-coloured paint to reduce the heating up of stored solvents and creosote.
(d)
Securing delivery connections
Delivery connections to storage tanks located within the bunded/contained area are secured and shut off when not in use.
(e)
Techniques to prevent overflows during pumping
This includes ensuring that:
the pumping operation is supervised;
for larger quantities, bulk storage tanks are fitted with acoustic and/or optical high-level alarms, with shut-off systems if necessary.
(f)
Closed storage containers
Use of closed storage containers for treatment chemicals.

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Source: https://www.legislation.gov.uk/eudn/2020/2009/annex/division/2/division/2.4/division/BAT (the official version)
Page: https://openlegislation.uk/eu-decision-2020-2009/annex/division-2/division-2.4/division-BAT
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.