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river_tees_-_maintenance_dredging [2024/10/16 17:23] – [Sampling of Riverbed] nefcadminriver_tees_-_maintenance_dredging [2025/07/22 11:28] (current) – nefcadmin
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 ===== Key Points ===== ===== Key Points =====
 + * 2 decades of [[river_tees_-_tees_maintenance_dredging_annual_reports]] explain how dredging has been carried out in the River Tees
  * PD Teesports disposal at sea license([[MLA-2015-00088|MLA/2015/00088]]) issued in 2015, was incorrectly issued for one tenth of material actually dumped at sea and only corrected with variation 6 in 2022  * PD Teesports disposal at sea license([[MLA-2015-00088|MLA/2015/00088]]) issued in 2015, was incorrectly issued for one tenth of material actually dumped at sea and only corrected with variation 6 in 2022
  * Opinions of the safety of disposal at sea states the incorrect quantities of material  * Opinions of the safety of disposal at sea states the incorrect quantities of material
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  * Sampling in October 2021 showed PAHs had in general increased compared to November 2020 (of 176 measurements 152 increased by upto 22times), but no similar increase seen in metal concentration (of 64 measurements only 34 had increased by at most 4 times and some had decreased to 10%)  * Sampling in October 2021 showed PAHs had in general increased compared to November 2020 (of 176 measurements 152 increased by upto 22times), but no similar increase seen in metal concentration (of 64 measurements only 34 had increased by at most 4 times and some had decreased to 10%)
  * This suggests that an event with a large release of hydrocarbons happened prior to 13th October 2021  * This suggests that an event with a large release of hydrocarbons happened prior to 13th October 2021
 + * PD Ports has applied for another 10 year renewal maintenance dredging licence - [[MLA-2025-00263|MLA/2025/00263]].
 +
 {{this>RiverTees/Planning/MLA_2015_00088/TeesMaintenanceDredgingBaselineMap.png}} {{this>RiverTees/Planning/MLA_2015_00088/TeesMaintenanceDredgingBaselineMap.png}}
 +
 ===== Background ===== ===== Background =====
  
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 The faster the rate of disposal the higher the concentration of chemical will be and so the more poisonous the sediment will be to the aquatic environment.  Faster rate of disposal will also mean the concentration of a chemical will remain above the concentration at which it is toxic for longer.  Very high concentrations may also slow down the rate of breakdown of the chemical, as the concentration of oxygen for oxidation is reduced by previous breakdowns and any microbial breakdown is swamped or even poisoned due to the high concentration. The faster the rate of disposal the higher the concentration of chemical will be and so the more poisonous the sediment will be to the aquatic environment.  Faster rate of disposal will also mean the concentration of a chemical will remain above the concentration at which it is toxic for longer.  Very high concentrations may also slow down the rate of breakdown of the chemical, as the concentration of oxygen for oxidation is reduced by previous breakdowns and any microbial breakdown is swamped or even poisoned due to the high concentration.
 +
 +===== Actual Disposal =====
 +
 +From Tees annual dredging reports
 +
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2000-2005 Baseline (Redacted).pdf|2000-2005 Baseline (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2006-2008 update (Redacted).pdf|2006-2008 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2009-2010 update (Redacted).pdf|2009-2010 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2011 update (Redacted).pdf|2011 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2012 update (Redacted).pdf|2012 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2013 update (Redacted).pdf|2013 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2014 update (Redacted).pdf|2014 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2015 update (Redacted).pdf|2015 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2016 update (Redacted).pdf|2016 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2018 update (Redacted) (1).pdf|2018 update (Redacted) (1).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2018 update (Redacted).pdf|2018 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2019 update (Redacted).pdf|2019 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2020 update (Redacted).pdf|2020 update (Redacted).pdf]]
 +[[this>RiverTees/TeesMaintenanceAnnualDredgeReview/2021-2022 update (Redacted).pdf|2021-2022 update (Redacted).pdf]]
 +
 ===== UKD Orca ===== ===== UKD Orca =====
  
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 ===== Sediment Explorer of Key Sediment Templates ===== ===== Sediment Explorer of Key Sediment Templates =====
  
-[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm&selcharts=tracemetaldata,pahdata,physicaldata|link]]+[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm,https://northeastfc.uk/RiverTees/Planning/MLA_2015_00088/Returns/Corrected_MMO_Results_Template%20-%20MAR02085.xlsm&selcharts=tracemetaldata,pahdata,physicaldata&locations=https://northeastfc.uk/Tools/LocationLatLon-LookUp.xlsx|All MLA_2015_00088 MMO sediment chemical analyses]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm&selcharts=tracemetaldata,pahdata,physicaldata&noninter=noninter}}+{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm,https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm,https://northeastfc.uk/RiverTees/Planning/MLA_2015_00088/Returns/Corrected_MMO_Results_Template%20-%20MAR02085.xlsm&selcharts=tracemetaldata,pahdata,physicaldata&locations=https://northeastfc.uk/Tools/LocationLatLon-LookUp.xlsx&features=noninter 1000}}
  
  
 ===== Polycyclic Aromatic Hydrocarbon Sediment ===== ===== Polycyclic Aromatic Hydrocarbon Sediment =====
  
-[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx&selcharts=pahdata&subcharts=gorhamtest,totalHC|15/06/03 - 20150603 MLP201500094 PD Teesport Results MMO Template.xlsx]]+[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx&selcharts=pahdata&subcharts=gorhamtest,totalhc|15/06/03 - 20150603 MLP201500094 PD Teesport Results MMO Template.xlsx]] 
 + 
 +{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx&selcharts=pahdata&subcharts=gorhamtest,totalhc&features=noninter}} 
 + 
 +[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/20125933%20-%20MMO%20Results.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc|18/08/10 - 20125933 - MMO Results.xlsm]] 
 + 
 +{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/20125933%20-%20MMO%20Results.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc&features=noninter}} 
 + 
 +[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc&locations=https://northeastfc.uk/Tools/LocationLatLon-LookUp.xlsx|19/01/24 - MMO_Results_Template MAR00179 V3.xlsm]] 
 + 
 +{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc&locations=https://northeastfc.uk/Tools/LocationLatLon-LookUp.xlsx&features=noninter}} 
 + 
 +[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc|19/08/14 - MMO Results_Template MAR00356_2.xlsm]] 
 + 
 +{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc&features=noninter}} 
 + 
 +[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc|20/12/15 - MMO_Results_Template - MAR00853 Interim_4.xlsm]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Additional%20Documents/20150603%20MLP201500094%20PD%20Teesport%20Results%20MMO%20Template.xlsx&selcharts=pahdata&subcharts=gorhamtest,totalHC&noninter=noninter}}+{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc&features=noninter}}
  
-[[href='https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/20125933%20-%20MMO%20Results.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC|18/08/10 - 20125933 - MMO Results.xlsm]]+[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc|21/10/13 - MMO_Results_Template - MAR01178.xlsm]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/20125933%20-%20MMO%20Results.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC&noninter=noninter}}+{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalhc&features=noninter}}
  
-[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC|19/01/24 - MMO_Results_Template MAR00179 V3.xlsm]]+[[River Tees - Maintenance Dredging - Sampling 2015 February 18]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20MAR00179%20V3.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC&locations=https://northeastfc.uk/Tools/LocationLatLon-LookUp.xlsx&noninter=noninter}}+[[River Tees - Maintenance Dredging - Sampling 2019 January 8]]
  
-[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC|19/08/14 - MMO Results_Template MAR00356_2.xlsm]]+[[River Tees - Maintenance Dredging - Sampling 2019 July 30]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO%20Results_Template%20MAR00356_2.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC&noninter=noninter}}+[[River Tees - Maintenance Dredging - Sampling 2019 September 26]]
  
-[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC|20/12/15 - MMO_Results_Template - MAR00853 Interim_4.xlsm]]+[[River Tees - Maintenance Dredging - Sampling 2020 December 1]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/5/Additional%20Documents/MMO_Results_Template%20-%20MAR00853%20Interim_4.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC&noninter=noninter}}+[[River Tees - Maintenance Dredging - Sampling 2021 October 13]]
  
-[[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC|21/10/13 - MMO_Results_Template - MAR01178.xlsm]]+[[River Tees - Maintenance Dredging - Sampling 2023 November 1]]
  
-{{url>https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?urls=https://northeastfc.uk/Teesworks/Planning/MLA_2015_00088/Returns/MMO_Results_Template%20-%20MAR01178.xlsm&selcharts=pahdata&subcharts=gorhamtest,totalHC&noninter=noninter}}+[[River Tees - Maintenance Dredging - Sampling 2024 October 7]]
  
  
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