Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK

Drax Power Limited

Issue No: 012 Issue date: 11 August 2021

Drax Contact: Laura Baker Tel: +44 (0) 1757 612493

North E-Mail: [email protected] 4733 YO8 8PH Website: www.drax.com Accredited to ISO/IEC 17025:2017 Testing performed by the Organisation at the locations specified

Locations covered by the organisation and their relevant activities

Laboratory locations:

Location details Activity Location code

Address Local contact Environmental Analysis A Drax Power Limited Laura Baker Drax Power Station Tel: +44 (0) 1757 612493 Selby E-Mail: [email protected] YO8 8PH

Site activities performed away from the locations listed above:

Location details Activity Location code

Sampling of: Sampling for subsequent B Groundwater chemical analysis Surface Water Process Water Saline Water

At: Drax Power Station Selby North Yorkshire YO8 8PH

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Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines -u po n - Thames, TW18 3HR, UK

Drax Power Limited 4733 Issue No: 011 Issue date: 11 August 2021 Accredited to ISO/IEC 17025:2017

Testing performed by the Organisation at the locations specified

DETAIL OF ACCREDITATION

Materials/Products tested Type of test/Properties Standard specifications/ Location measured/Range of Equipment/Techniques Code measurement used

WATERS: Chemical and Physical Tests Documented in-house Ground water methods surface water process waters Metals: (total and soluble) Method LAB 603 using A saline water ICP/MS analysis Sodium Potassium Phosphorus Calcium Magnesium

Elements (total and soluble) Method LAB 624 using A ICP/MS analysis Aluminium Antimony Arsenic Barium Boron Cadmium Cobalt Chromium Copper Iron Manganese Molybdenum Nickel Lead Tin Zinc Vanadium

Total Alkalinity Method Lab101A by A Titrimetry

Anions: Method LAB 612 using IC A analysis Chloride Sulphate Fluoride

Phosphate Method LAB 135 using A colorimetric analysis

Case Manager: LL Page 2 of 4

Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines -u po n - Thames, TW18 3HR, UK

Drax Power Limited 4733 Issue No: 011 Issue date: 11 August 2021 Accredited to ISO/IEC 17025:2017

Testing performed by the Organisation at the locations specified

Materials/Products tested Type of test/Properties Standard specifications/ Location measured/Range of Equipment/Techniques Code measurement used

WATERS: (cont’d) Chemical and Physical Tests Documented in-house Ground water (cont’d) methods surface water process waters Hexavalent Chromium Method LAB 141 using A saline water colorimetric analysis

Total Suspended Solids BS EN 872 using Method A LAB 112 using gravimetric analysis

Total Organic Carbon Method LAB 605 using A Dissolved Organic Carbon TOC analyser

pH Method LAB 134 using pH A probe

Conductivity Method LAB 134 using A conductivity probe

Ground water, Surface Ammonia Method LAB 132 using A water, Leachates (land & Colourimetry prepared), Trade effluent, and Process waters (high purity waters)

ASH: Carbon in Ash Method LAB 116 using A Pulverised fuel ash (PFA) carbon in ash analyser furnace bottom ash (FBA) ash,coke ash ash combinations of coal, coke and biomass ash

Dusts, Liquids, solids and Weighing by analytical Method Lab 146 and Lab A Reagents balance mass range 0.05g to 119 based on BS EN 200g 872:2005 by analytical balance

Case Manager: LL Page 3 of 4

Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines -u po n - Thames, TW18 3HR, UK

Drax Power Limited 4733 Issue No: 011 Issue date: 11 August 2021 Accredited to ISO/IEC 17025:2017

Testing performed by the Organisation at the locations specified

Materials/Products tested Type of test/Properties Standard specifications/ Location measured/Range of Equipment/Techniques Code measurement used

WATERS: Sampling for subsequent chemical analysis:

Groundwater Sampling of: LAB122 B Surface water Taps Process waters Weirs Saline water Channels/Tanks Water courses

Groundwater Sampling of: LAB123 B Purged Boreholes

END

Case Manager: LL Page 4 of 4