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mla_2025_00263_nemrg_representation [2025/08/06 21:34] – [Datasets] nefcadminmla_2025_00263_nemrg_representation [2025/08/08 11:48] (current) – [Sediment Quality Datasets] nefcadmin
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 +===== Representation Submitted on Behalf of NEMRG 6th August 2025 =====
 +
 +==== Covering Note ====
 +
 The representation and supporting documents detail NEMRG’s key recommendations for essential restrictions to be imposed on the River Tees maintenance dredging licence renewal ([[MLA-2025-00263]]), alongside errors identified within the accompanying licence renewal documents. The representation and supporting documents detail NEMRG’s key recommendations for essential restrictions to be imposed on the River Tees maintenance dredging licence renewal ([[MLA-2025-00263]]), alongside errors identified within the accompanying licence renewal documents.
  
 These points are drawn directly from NEMRG's detailed analysis to address critical concerns for the Tees marine ecosystem. These points are drawn directly from NEMRG's detailed analysis to address critical concerns for the Tees marine ecosystem.
  
-Most Important Restrictions and Recommendations for the Dredging Licence:+==== Most Important Restrictions and Recommendations for the Dredging Licence: ==== 
   * Eliminate or severely restrict overspilling during dredging operations. Trailing Suction Hopper Dredgers (TSHDs) are considered the least suitable for contaminated rivers like the Tees due to sediment dispersal and mixing. Overspilled material is more contaminated due to the concentration of hydrophobic contaminants (like PAHs and PCBs) on finer particles.   * Eliminate or severely restrict overspilling during dredging operations. Trailing Suction Hopper Dredgers (TSHDs) are considered the least suitable for contaminated rivers like the Tees due to sediment dispersal and mixing. Overspilled material is more contaminated due to the concentration of hydrophobic contaminants (like PAHs and PCBs) on finer particles.
   * Mandate enhanced and consistent sediment analysis and sampling. More frequent analyses for PAHs, PCBs, and Brominated Diphenyl Ethers (BDEs) are needed. Sampling must be performed before, during, and after dredging operations, with specific limits set on contamination spread. Crucially, analysis should consider the surface area of sediment particles, not just overall weight, as contaminants adsorb onto smaller particles.   * Mandate enhanced and consistent sediment analysis and sampling. More frequent analyses for PAHs, PCBs, and Brominated Diphenyl Ethers (BDEs) are needed. Sampling must be performed before, during, and after dredging operations, with specific limits set on contamination spread. Crucially, analysis should consider the surface area of sediment particles, not just overall weight, as contaminants adsorb onto smaller particles.
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   * Formally adopt an Annual Calendar of Ecological Sensitivity. This comprehensive, risk-based tool would consolidate all known ecological sensitivities into a colour-coded system to proactively schedule dredging campaigns, minimising conflicts with critical wildlife periods such as harbour seal pupping season (June-July) and peak waterbird feeding times.   * Formally adopt an Annual Calendar of Ecological Sensitivity. This comprehensive, risk-based tool would consolidate all known ecological sensitivities into a colour-coded system to proactively schedule dredging campaigns, minimising conflicts with critical wildlife periods such as harbour seal pupping season (June-July) and peak waterbird feeding times.
   *    * 
-Significant Errors and Concerns in the Licence Renewal Documents:+==== Significant Errors and Concerns in the Licence Renewal Documents: ==== 
   * "Providential" rather than precautionary approach: The licence application assumes existing practices are acceptable due to long-term occurrence, despite significant environmental damage such as the mass crustacean die-off in 2021 and high mortality of harbour seal pups.   * "Providential" rather than precautionary approach: The licence application assumes existing practices are acceptable due to long-term occurrence, despite significant environmental damage such as the mass crustacean die-off in 2021 and high mortality of harbour seal pups.
   * Incorrect application of Marine and Coastal Access Act 2009: The application incorrectly states that PD Ports meets the exemption within Section 75 for sea disposal, as the Tees Inner disposal site (Tees Bay 'A' TY160) is not classified as "surface waters" but rather the North Sea, governed by international conventions.   * Incorrect application of Marine and Coastal Access Act 2009: The application incorrectly states that PD Ports meets the exemption within Section 75 for sea disposal, as the Tees Inner disposal site (Tees Bay 'A' TY160) is not classified as "surface waters" but rather the North Sea, governed by international conventions.
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 [[this>NEMRG/250806NEMRG - Tees Dredging - Environmental Best Practices.pdf|Best Practices for Environmentally Responsible Maintenance Dredging in the River Tees: An Integrated Framework for TSHD Operations]] [[this>NEMRG/250806NEMRG - Tees Dredging - Environmental Best Practices.pdf|Best Practices for Environmentally Responsible Maintenance Dredging in the River Tees: An Integrated Framework for TSHD Operations]]
  
-===== Sediment Quality Datasets =====+===== Sediment Quality Datasets from MLA/2015/00088 and mid-term L/2015/00427/7 ===== 
 + 
 +2015/06/03 6 f MLP/2015/00094 has 25 samples with 25[22xPAHs] 25[8xTMs] 25[2xOTs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Additional Documents/20150603 MLP201500094 PD Teesport Results MMO Template.xlsx|2015 data set]] 
 + 
 +2018/10/17 3 f MLA_2015_00088 has 10 samples with 10[22xPAHs] 10[8xTMs] 10[2xOTs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Consultations/Carcinus - 20126278 - MMO Results.xlsm|2018 data set - Carcinus]] 
 + 
 +2019/01/24M2 f MLA_2015_00088 has 10 samples with 10[22xPAHs] 10[25xPCBs] 10[8xTMs] 10[12xBDEs] 10[2xOTs] 10[8xOCs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Returns/MMO_Results_Template MAR00179 V3.xlsm|2019 data set - MAR00179]] 
 + 
 +2019/08/14M1 f MLA_2015_00088 has 16 samples with 16[22xPAHs] 16[25xPCBs] 16[8xTMs] 16[12xBDEs] 16[2xOTs] 16[8xOCs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Returns/MMO Results_Template MAR00356_2.xlsm|2019 data set - MAR00356]] 
 + 
 +2021/10/13 4 f MLA/2015/00088 has 20 samples with 20[22xPAHs] 20[25xPCBs] 20[8xTMs] 20[2xOTs] 20[8xOCs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Returns/MMO_Results_Template - MAR01178.xlsm|2021 data set - MAR01178]] 
 + 
 +2023/10/19 8 f MLA/2015/00088/6 has 10 samples with 10[22xPAHs] 10[25xPCBs] 10[8xTMs] 10[12xBDEs] 10[2xOTs] 10[8xOCs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Returns/MMO_Results_ - MAR02085 UPDATED.xlsm|2023 data set - MAR02085]] 
 + 
 +2024/10/07 7 f MLA_2015_00088 has 8 samples with 8[22xPAHs] 2[25xPCBs] 8[8xTMs] 8[12xBDEs] 8[2xOTs] 2[8xOCs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Returns/MMO Results Template MAR02499 V2.xlsm|2024 data set - MAR02499]] 
 + 
 +2024/10/28M5 f MLA_2015_00088 has 23 samples with 23[22xPAHs] 8[25xPCBs] 23[8xTMs] 23[12xBDEs] 23[2xOTs] 8[8xOCs] Phys : 
 +[[this>RiverTees/Planning/MLA_2015_00088/Returns/MMO_Results_Template - MAR02481 V2.xlsm|2024 data set - MAR02481]] 
 + 
 +===== Sediment Data Explorer Links for Sediment Quality Datasets =====
  
 [[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?status=https://northeastfc.uk/NEMRG/sde/250728AllMLA202500263.sde|2015-2024 data sets]] [[https://steps39.github.io/SedDataExp/SedimentDataExplorer.html?status=https://northeastfc.uk/NEMRG/sde/250728AllMLA202500263.sde|2015-2024 data sets]]
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