Table of Contents
Request
Dear South Tees Development Corporation,
As the body responsible for the South Tees Site, I am requesting specific data regarding the management of hazardous chemical legacies inherited from the South Tees Site Company and responsible for the site's classification as a COMAH Upper Tier site.
To understand the environmental context of the site’s redevelopment, please provide:
Request: Documentation transferred from South Tees Site Company or held by STDC which details the chemical inventory annually related to the COMAH Upper Tier status until COMAH Upper Tier status was removed.
Please handle this request under the Environmental Information Regulations (EIR) 2004, which provide for greater transparency on matters affecting the environment.
Response
15th May 2026
Environmental Information Regulations (EIR) 2004 Act - Reference: STDC-008-2026.
Thank you for your request for information received on 18/03/2026. In response to your request, we can now provide the attached response and information.
If you have any queries or concerns, please contact [1][STDC request email] in the first instance.
Please remember to quote the reference number above in any future communications.
If you are unhappy with the way your request for information has been handled, you may request an internal review within 40 working days by writing to:
- Group Interim Monitoring Officer, South Tees Development Corporation, Teesside Airport Business Suite, Teesside International Airport, Darlington. DL2 1NJ.
If, after your complaint has been determined, you remain dissatisfied with the handling of your request or complaint, you have a right to appeal to the Information Commissioner at:
- The Information Commissioner's Office (ICO), Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF, Telephone: 0303 123 1113, Website: [2]https://ico.org.uk/make-a-complaint/. The ICO does not make a charge for an appeal.
Yours sincerely, [4][email address]
TVCA Governance on behalf of South Tees Development Corporation, Teesside Airport Business Suite | Teesside International Airport, Darlington DL2 1NJ. [5]https://www.teesvalley-ca.gov.uk
References
Visible links
- mailto:[stdc%20request%20email]
- mailto:[email%20address]
Summary Presentations
210820 Teesworks COMAH Inventory and Demolition Programme - Slide Show
221006 Teesworks COMAH Inventory and Demolition Programme - Slide Show
Whole Site COMAH Inventory
230111 Current Inventory of COMAH Dangerous Substances Present at STSC
230131 Current Inventory of COMAH Dangerous Substances Present at STSC
230207 Current Inventory of COMAH Dangerous Substances Present at STSC
230214 Current Inventory of COMAH Dangerous Substances Present at STSC
230301 Current Inventory of COMAH Dangerous Substances Present at STSC
230321 Current Inventory of COMAH Dangerous Substances Present at STSC
230323 Current Inventory of COMAH Dangerous Substances Present at STSC
230405 Current Inventory of COMAH Dangerous Substances Present at STSC
230412 Current Inventory of COMAH Dangerous Substances Present at STSC
230502 Current Inventory of COMAH Dangerous Substances Present at STSC
230531 Current Inventory of COMAH Dangerous Substances Present at STSC
230616 Current Inventory of COMAH Dangerous Substances Present at STSC
230629 Current Inventory of COMAH Dangerous Substances Present at STSC
230718 Current Inventory of COMAH Dangerous Substances Present at STSC
230803 Current Inventory of COMAH Dangerous Substances Present at STSC
230807 Current Inventory of COMAH Dangerous Substances Present at STSC
230814 Current Inventory of COMAH Dangerous Substances Present at STSC
230905 Current Inventory of COMAH Dangerous Substances Present at STSC
230926 Current Inventory of COMAH Dangerous Substances Present at STSC
231013 Current Inventory of COMAH Dangerous Substances Present at STSC
231121 Current Inventory of COMAH Dangerous Substances Present at STSC
EIR/STDC/260515COMAH Chemical Inventory/B&M - Waste Compound Tracker 02-05-2023.pdf
EIR/STDC/260515COMAH Chemical Inventory/B&M - Waste Compound Tracker 16-05-2023.pdf
Waste Register
230119 BOS Plant - Waste Register - Thompsons - Vehicle Movements mainly to Highfield Environmental or Augean - 5th August 2021 to 16th February 2023
230323 BOS Plant - Waste Register - Thompsons - Vehicle Movements mainly to Highfield Environmental or Augean - 5th August 2021 to 22nd February 2023
EIR/STDC/260515COMAH Chemical Inventory/Comah declassification rev D (002) Signed letter.pdf
Waste Compound Tracker
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230316.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230330.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230405.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230413.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230420.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230427.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230504.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230511.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230525.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230601.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230608.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230623.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230630.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230707.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230714.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230721.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230728.pdf
EIR/STDC/260515COMAH Chemical Inventory/Combined Waste Compound Tracker - 230804.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Compound Transfer Tracker - 230202.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Compound Transfer Tracker - 230209.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Compound Transfer Tracker - 230223.pdf
Waste Inventory
EIR/STDC/260515COMAH Chemical Inventory/Waste inventory 24.02.23.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste inventory current 230303.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste inventory current 230309.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste inventory current 230316.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste inventory current 230323.pdf
Waste Transfer Tracker
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230105.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230112.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230202.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230209.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230223.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230302.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230309 Rev A.pdf
EIR/STDC/260515COMAH Chemical Inventory/Waste Transfer Tracker-230323.pdf