Snuff the wind

AuthorityDepartment of Environment, Food and Agriculture
Date received2025-05-15
OutcomeAll information sent
Outcome date2025-06-17
Case ID4662882

Summary

The request sought data on the effectiveness of the 'Snuff the Wind' closure in reducing contamination in Peel Marina from the Cross Vein mine. The Department of Environment, Food and Agriculture disclosed monitoring results showing a significant reduction in heavy metal loads following the closure and remediation works.

Key Facts

  • The Cross Vein Mine site was closed to unauthorized off-road bikes and 4x4s in March 2020.
  • Water analysis has been conducted across the River Neb Catchment since Autumn 2018.
  • Comparative data shows a 69.4% reduction in total lead load and a 63.8% reduction in total zinc load between the pre-closure and post-closure periods.
  • Remediation measures included closing the site, cleaning roadside ditches, and installing leaky dams.
  • The response included sediment analysis reports from SOCOTEC for Peel Marina Lagoon dated July 2022.

Data Disclosed

  • March 2020
  • Autumn 2018
  • October 2018-May 2019
  • May 2020-August 2024
  • 372 kg/year
  • 114 kg/year
  • 160 kg/year
  • 58 kg/year
  • -69.4%
  • -63.8%
  • 0.45µm
  • 07/01/2022
  • MAR01275

Original Request

Please provide information related to the closure of Snuff The Wind and its effectiveness in reducing contamination of Peel marina. In Early 2020 'Snuff the Wind' and area on the Cross Vein mine was closed to the public. The cited reason was Contaminants being disturbed and making their way into Peel marina. Following this closure in 2020, up until the present day - please provide results of any contamination monitoring or investigation in Peel marina related to the Cross Vein mine. Please provide any results of comparative data that show if the Snuff the Wind closure has had an effect.

Data Tables (63)

Date Lead Total Load (kg/year) Lead Total Load (Dissolved) (kg/year) Lead Total Load (Particulate) (kg/year) Zinc Total Load (kg/year) Zinc Total Load (Dissolved) (kg/year) Zinc Total Load (Particulate) (kg/year)
October 2018-May 2019 372 160
May 2020- August 2024 114 55 59 58 56 2
% Change 2018-19 to 2020-24 -69.4% -63.8%
Units % M/M % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No SOCOTEC Env Chem* *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation UKAS/MMO MMO MMO MMO MMO MMO
Total Organic Carbon 45mm 31.5mm 22.4mm 16mm 11.2mm
Client Reference: SOCOTEC Ref: Matrix − -5.5 -5.0 -4.5 -4.0 -3.5
1.00 MAR01275.001 Sediment 8.18 0.00 0.00 0.00 0.33 0.81
2.00 MAR01275.002 Sediment 19.30 0.18 0.30 0.00 4.44 4.79
3.00 MAR01275.003 Sediment >25.0* 0.00 0.00 0.00 0.34 0.39
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO MMO MMO MMO
8mm 5.6mm 4mm 2.8mm 2mm 1.4mm
Client Reference: SOCOTEC Ref: Matrix -3.0 -2.5 -2.0 -1.5 -1.0 -0.5
1.00 MAR01275.001 Sediment 0.75 1.36 1.86 2.01 1.27 1.11
2.00 MAR01275.002 Sediment 3.54 5.19 5.34 4.58 3.49 3.23
3.00 MAR01275.003 Sediment 1.79 2.65 2.88 1.95 1.59 1.59
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO MMO MMO MMO
1mm 707µm 500µm 353.6µm 250µm 176.8µm
Client Reference: SOCOTEC Ref: Matrix 0.0 0.5 1.0 1.5 2.0 2.5
1.00 MAR01275.001 Sediment 0.69 1.69 2.47 4.32 4.90 7.43
2.00 MAR01275.002 Sediment 2.17 0.92 3.09 4.11 4.30 6.33
3.00 MAR01275.003 Sediment 1.22 2.59 5.66 8.90 12.65 14.40
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO MMO MMO MMO
125µm 88.39µm 63µm 44.2µm 31.3µm 22.1µm
Client Reference: SOCOTEC Ref: Matrix 3.0 3.5 4.0 4.5 5.0 5.5
1.00 MAR01275.001 Sediment 8.66 8.55 8.98 8.62 8.23 7.21
2.00 MAR01275.002 Sediment 6.82 6.00 5.54 5.03 4.77 4.23
3.00 MAR01275.003 Sediment 10.39 6.27 4.89 4.09 3.66 3.14
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO MMO MMO MMO
15.6µm 11µm 7.8µm 5.5µm 3.9µm 2.75µm
Client Reference: SOCOTEC Ref: Matrix 6.0 6.5 7.0 7.5 8.0 8.5
1.00 MAR01275.001 Sediment 5.63 4.30 3.13 2.16 1.28 0.67
2.00 MAR01275.002 Sediment 3.36 2.59 1.91 1.35 0.83 0.45
3.00 MAR01275.003 Sediment 2.50 1.97 1.46 1.03 0.64 0.36
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO MMO MMO
1.95µm 1.38µm 0.98µm 0.69µm 0.49µm
Client Reference: SOCOTEC Ref: Matrix 9.0 9.5 10.0 10.5 11.0
1.00 MAR01275.001 Sediment 0.33 0.20 0.18 0.18 0.17
2.00 MAR01275.002 Sediment 0.23 0.14 0.12 0.13 0.12
3.00 MAR01275.003 Sediment 0.19 0.12 0.11 0.11 0.11
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO MMO MMO
0.34µm 0.24µm 0.17µm 0.12µm 0.09µm
Client Reference: SOCOTEC Ref: Matrix 11.5 12.0 12.5 13.0 13.5
1.00 MAR01275.001 Sediment 0.15 0.13 0.10 0.07 0.04
2.00 MAR01275.002 Sediment 0.11 0.09 0.07 0.05 0.03
3.00 MAR01275.003 Sediment 0.10 0.09 0.07 0.05 0.03
Units % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals)
Method No *SUB_01 *SUB_01 *SUB_01
Accreditation MMO MMO MMO
0.06µm 0.04µm <0.04µm
Client Reference: SOCOTEC Ref: Matrix 14.0 14.5 >14.5
1.00 MAR01275.001 Sediment 0.02 0.00 0.00
2.00 MAR01275.002 Sediment 0.01 0.00 0.00
3.00 MAR01275.003 Sediment 0.01 0.00 0.00
Units mg/Kg (Dry Weight)
Method No SOCOTEC Env Chem*
Limit of Detection 0.5 0.04 0.5 0.5 0.01 0.5 0.5 2
Accreditation UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix Arsenic (As) Cadmium (Cd) Chromium (Cr) Copper (Cu) Mercury (Hg) Nickel (Ni) Lead (Pb) Zinc (Zn)
1.00 MAR01275.001 Sediment 24.8 4.25 16.2 69.5 0.07 20.2 1235 849
2.00 MAR01275.002 Sediment 18.6 3.31 10.5 44.3 0.09 15.7 797 637
3.00 MAR01275.003 Sediment 19.4 2.91 7.2 32.2 0.04 15.3 492 568
Certified Reference Material SETOC 774 (% Recovery) 100 105 104 100 93 104 97 101
QC Blank <0.5 <0.04 <0.5 <0.5 <0.01 <0.5 <0.5 <2
Units µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight)
Method No ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304
Limit of Detection 1 1 1 1 1 1
Accreditation UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix ACENAPTH ACENAPHY ANTHRACN BAA BAP BBF
1.00 MAR01275.001 Sediment 53.5 69.9 248 855 912 793
2.00 MAR01275.002 Sediment 28.9 10.6 49.9 135 170 160
3.00 MAR01275.003 Sediment 43.9 11.8 65.8 87.2 107 97.9
Certified Reference Material Quasimeme QPH105MS (% Recovery) 86 116 109 89 94 72
QC Blank <1 <1 <1 <1 <1 <1
Units µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight)
Method No ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304
Limit of Detection 1 1 1 1 1 1
Accreditation UKAS/MMO UKAS/MMO UKAS/MMO MMO MMO MMO
Client Reference: SOCOTEC Ref: Matrix BENZGHIP BEP BKF C1N C1PHEN C2N
1.00 MAR01275.001 Sediment 624 684 461 55.3 366 102
2.00 MAR01275.002 Sediment 147 142 88.5 23.6 86.9 186
3.00 MAR01275.003 Sediment 84.4 92.8 66.5 25.3 98.8 220
Certified Reference Material Quasimeme QPH105MS (% Recovery) 95 95 109 101 121 84
QC Blank <1 <1 <1 <1 <1 <1
Units µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight)
Method No ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304
Limit of Detection 1 1 1 1 1 1
Accreditation MMO MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix C3N CHRYSENE DBENZAH FLUORANT FLUORENE INDPYR
1.00 MAR01275.001 Sediment 84.0 679 98.7 1720 84.0 686
2.00 MAR01275.002 Sediment 83.7 131 27.3 301 45.0 148
3.00 MAR01275.003 Sediment 70.3 88.0 17.6 265 51.0 81.4
Certified Reference Material Quasimeme QPH105MS (% Recovery) 65 91 87 94 81 86
QC Blank <1 <1 <1 <1 <1 <1
Units µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) mg/Kg
Method No ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/305
Limit of Detection 1 1 1 1 1
Accreditation UKAS/MMO MMO UKAS/MMO UKAS/MMO MMO
Client Reference: SOCOTEC Ref: Matrix NAPTH PERYLENE PHENANT PYRENE THC
1.00 MAR01275.001 Sediment 50.0 429 694 1580 44.5
2.00 MAR01275.002 Sediment 31.3 72.8 127 280 42.6
3.00 MAR01275.003 Sediment 15.9 53.1 206 246 28.0
Certified Reference Material Quasimeme QPH105MS (% Recovery) 101 81 96 100 98~
QC Blank <1 <1 <1 <1 <1
Units mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight)
Method No ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302
Limit of Detection 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008
Accreditation UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix PCB 101 PCB 105 PCB 110 PCB 118 PCB 128 PCB 138 PCB 141 PCB 149
1.00 MAR01275.001 Sediment <0.00008 <0.00008 0.00027 0.00035 0.00015 0.00040 <0.00008 0.00018
2.00 MAR01275.002 Sediment 0.00009 <0.00008 <0.00008 <0.00008 <0.00008 0.00013 <0.00008 <0.00008
3.00 MAR01275.003 Sediment <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 0.00009 <0.00008 <0.00008
Certified Reference Material Quasimeme QOR146MS (% Recovery) 105 124 98~ 107 95~ 107 97~ 58
QC Blank <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008
Units mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight)
Method No ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302
Limit of Detection 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008
Accreditation UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO MMO* UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix PCB 151 PCB 153 PCB 156 PCB 158 PCB 170 PCB 18 PCB 180
1.00 MAR01275.001 Sediment <0.00008 0.00042 0.00009 <0.00008 <0.00008 0.00013 0.00020
2.00 MAR01275.002 Sediment <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 0.00010 <0.00008
3.00 MAR01275.003 Sediment <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 0.00009 <0.00008
Certified Reference Material Quasimeme QOR146MS (% Recovery) 96~ 92 100~ 103~ 96~ 94~ 69
QC Blank <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008
Units mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight)
Method No ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302 ASC/SOP/302
Limit of Detection 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008 0.00008
Accreditation UKAS/MMO MMO* UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix PCB 183 PCB 187 PCB 194 PCB 28 PCB 31 PCB 44 PCB 47
1.00 MAR01275.001 Sediment <0.00008 <0.00008 <0.00008 0.00013 0.00020 <0.00008 <0.00008
2.00 MAR01275.002 Sediment <0.00008 <0.00008 <0.00008 <0.00008 0.00009 <0.00008 <0.00008
3.00 MAR01275.003 Sediment <0.00008 <0.00008 <0.00008 <0.00008 0.00016 <0.00008 <0.00008
Certified Reference Material Quasimeme QOR146MS (% Recovery) 89 57 93~ 86 149 76 98~
QC Blank <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008 <0.00008
Units mg/Kg (Dry Weight) mg/Kg (Dry Weight) mg/Kg (Dry Weight)
Method No ASC/SOP/302 ASC/SOP/302 ASC/SOP/302
Limit of Detection 0.00008 0.00008 0.00008
Accreditation UKAS/MMO UKAS/MMO UKAS/MMO
Client Reference: SOCOTEC Ref: Matrix PCB 49 PCB 52 PCB 66
1.00 MAR01275.001 Sediment 0.00010 0.00022 0.00009
2.00 MAR01275.002 Sediment <0.00008 <0.00008 <0.00008
3.00 MAR01275.003 Sediment <0.00008 0.00011 <0.00008
Certified Reference Material Quasimeme QOR146MS (% Recovery) 120 122 108
QC Blank <0.00008 <0.00008 <0.00008
Method Code Sample ID The following information should be taken into consideration when using the data contained within this report
*SUB_01 MAR01275.001-003 Analysis was conducted by an approved subcontracted laboratory.
SOCOTEC Env Chem* MAR01275.001-003 Analysis was conducted by an internal SOCOTEC laboratory. UKAS accredited analysis by this laboratory is under UKAS number 1252.
SOCOTEC Env Chem* (TOC) MAR01275.003 Due to recoveries beyond our calibration range and following the maximum size of dilution allowed, the result cannot be quantified and as such the result will appear as a greater than symbol (>) with the accreditation removed. This data should be used for indicative purposes only.
ASC/SOP/302 MAR01275.001-003 The Primary process control data associated with this Test has not wholly met the requirements of the Laboratory Quality Management System QMS with one or more target analytes falling outside acceptable limits. The remaining data gives the Laboratory confidence that the test has performed satisfactorily and that the validity of the data may not have been significantly affected.However in line with our QMS policy we have removed accreditation, where applicable, from the affected analytes (PCB170, PCB187) . These circumstances should be taken into consideration when utilising the data.
ASC/SOP/303/304 MAR01275.001-003 Chrysene is known to coelute with Triphenylene and these peaks can not be resolved in the PAHSED UKAS accredited method. Chrysene and Triphenylene are resolved for MMO but this is currently not UKAS accredited therefore Chrysene is reported without this acccreditation.
Deviation Code Deviation Definition Sample ID Deviation Details. The following information should be taken into consideration when using the data contained within this report
D1 Holding Time Exceeded N/A N/A
D2 Handling Time Exceeded N/A N/A
D3 Sample Contaminated through Damaged Packaging N/A N/A
D4 Sample Contaminated through Sampling N/A N/A
D5 Inappropriate Container/Packaging N/A N/A
D6 Damaged in Transit N/A N/A
D7 Insufficient Quantity of Sample N/A N/A
D8 Inappropriate Headspace N/A N/A
D9 Retained at Incorrect Temperature N/A N/A
D10 Lack of Date & Time of Sampling N/A N/A
D11 Insufficient Sample Details N/A N/A
D12 Sample integrity compromised or not suitable for analysis N/A N/A
Method Sample and Fraction Size Method Summary
Particle Size Analysis Wet Sediment Wet and dry sieving followed by laser diffraction analysis.
Total Organic Carbon (TOC) Air dried Carbonate removal and sulphurous acid/combustion at 1600°C/NDIR.
Metals Air dried Aqua-regia extraction followed by ICP analysis.
Organotins Wet Sediment Solvent extraction and derivatisation followed by GC-MS analysis.
Polyaromatic Hydrocarbons (PAH) Wet Sediment Solvent extraction and clean up followed by GC-MS analysis.
Total Hydrocarbon Content (THC) Wet Sediment Ultra-violet fluorescence spectroscopy
Polychlorinated Biphenyls (PCBs) Air dried and seived to <2mm Solvent extraction and clean up followed by GC-MS-MS analysis.
Analyte Definitions
Analyte Abbreviation Full Analyte name Analyte Abbreviation Full Analyte name Analyte Abbreviation Full Analyte name
ACENAPTH Acenaphthene C2N C2-naphthalenes THC Total Hydrocarbon Content
ACENAPHY Acenaphthylene C3N C3-naphthalenes AHCH alpha-Hexachlorocyclohexane
ANTHRACN Anthracene CHRYSENE Chrysene BHCH beta-Hexachlorocyclohexane
BAA Benzo[a]anthracene DBENZAH Dibenzo[ah]anthracene GHCH gamma-Hexachlorocyclohexane
BAP Benzo[a]pyrene FLUORANT Fluoranthene DIELDRIN Dieldrin
BBF Benzo[b]fluoranthene FLUORENE Fluorene HCB Hexachlorobenzene
BEP Benzo[e]pyrene INDPYR Indeno[1,2,3-cd]pyrene PPDDE p,p'-Dichlorodiphenyldichloroethylene
BENZGHIP Benzo[ghi]perylene NAPTH Naphthalene PPDDT p,p'-Dichlorodiphenyltrichloroethane
BKF Benzo[k]fluoranthene PERYLENE Perylene PPTDE p,p'-Dichlorodiphenyldichloroethane
C1N C1-naphthalenes PHENANT Phenanthrene
C1PHEN C1-phenanthrene PYRENE Pyrene
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Trace metal data Instructions: Determinand analysis outputs:
1. Record the laboratory/contractor responsible for trace metal analysis
2. Record the date the samples were analysed. 3. Enter full dataset for each sample in the analysis results table Laboratory sample number Dredge Area Sample ID(s) Total solids (%) Metals as mg/kg dry weight
Arsenic (As) Cadmium (Cd) Chromium (Cr) Copper (Cu) Mercury (Hg) Nickel (Ni) Lead (Pb) Zinc (Zn)
4. Trace metal analysis results should be reported in mg/kg (ppm) dry weight 5. Enter methdological limit of detection for each trace metal prior to inputting raw data 6. Where analysis outputs are less than the limits of detection please enter text "<LOD " MAR01275.001 1 27.5 24.8 4.25 16.2 69.5 0.07 20.2 1235 849
MAR01275.002 2 31.3 18.6 3.31 10.5 44.3 0.09 15.7 797 637
MAR01275.003 3 21.8 19.4 2.91 7.2 32.2 0.04 15.3 492 568
7. Where copying and pasting entries please use paste values only 8. Where entering multiple Sample IDs please use the pop-up form IDs should be separated by a comma Analysis information:
Laboratory/contractor:SOCOTEC
Date of analysis:07/02/2022
Dredge Areas Area i Area ii Area iii Area iv Area v Area vi
Limits of detection (mg/kg dry weight): 0.5 0.04 0.5 0.5 0.01 0.5 0.5 2
Organotin data Instructions: determinand analysis outputs:
1. Record the laboratory/contractor responsible for organotin analysis
2. Record the date the samples were analysed. 3. Enter full dataset for each sample in the analysis results table Laboratory sample number Dredge Area Sample ID(s) Total solids (%) Organotins as mg/kg dry weight
Dibutyltine (DBT) Tributyltin (TBT)
4. Organotin analysis results should be reported in mg/kg (ppm) dry weight 5. Enter methdological limit of detection for each organotin prior to inputting raw dat 6. Where analysis outputs are less than the limits of detection please enter text "<LO 7. Where copying and pasting entries please use paste values only 8. Where entering multiple Sample IDs please use the pop-up form IDs should be separated by a comma Analysis information: a D"
Laboratory/contractor:
Date of analysis:
Dredge Areas Area i Area ii Area iii Area iv Area v Area vi
Limits of detection (mg/kg dry weight):
Organochlorine data Instructions: determinand analysis outputs:
1. Record the laboratory/contractor responsible for analysis
2. Record the date the samples were analysed. 3. Enter full dataset for each sample in the analysis results table Laboratory sample number Dredge Area Sample ID(s) Total Solids (%) Organochlorine pesticides as mg/kg dry weight
alpha- hexachlorocyclohexane (AHCH) beta- hexachlorocyclohexane (BHCH) gamma- hexachlorocyclohexane (GHCH) Dieldrin Hexachlorobenzene (HCB) 1,1-Dichloro-2,2-bis(p- chlorophenyl) ethylene (PPDDE) Dichlorodiphenyltrichloro ethane (PPDDT) 1,1-dichloro-2,2-bis(p- chlorophenyl)ethane (PPTDE)
4. Analysis results should be reported in mg/kg (ppm) dry weight. 5. Enter methdological limit of detection for each Organochlorine prior to inputting raw dat 6. Where analysis outputs are less than the limits of detection please enter text "<LOD" 7. Where copying and pasting entries please use paste values only 8. Where entering multiple Sample IDs please use the pop-up form IDs should be separated by a comma Analysis information: a
Laboratory/contractor:
Date of analysis:
Dredge Areas Area i Area ii Area iii Area iv Area v Area vi
Limits of detection (mg/kg dry weight):
Brominated flame retardant data Instructions: determinand analysis outputs: 1. Record the laboratory/contractor responsible for analysis
2. Record the date the samples were analysed. 3. Enter full dataset for each sample in the analysis results table saLmapbleo rnautomryb er Dredge Area Sample ID(s) Total Solids (%) br2o,m2′ (o,4 Bd, Di4p′ Eh,6 1e- 0np 0ye )ln etath-er Hexabro(mBoDdEip1h3e8n) yl ether b2r,o2m′,4 (oB ,d4 Dip′, E 5h, 1e5 5n′- 3yh )l eextah-er b2ro,2m′,o( 4 Bd,4iDp′, Eh5e1 ,6n5 ′y- hl) eexthae-r 4 bromo2 (dB ,2iDp´,hE 4e1 -nt 7 ryi ) -lether Brominated flame reta heep2 tt, ha2 eb′, rr3 o( ,mB 4, Do4dE ′,i5 1p′ 8h,6 3e- )nyl rdants as mg/kg dry weight de2c,a2 eb', tr3 ho, 3mr ' ,i( 4nB ,a4 Dte', 5d , 5d0 'i,p9 6h) ,6e'n-yl e E 2 2,4,4e'-thtreibr r(oBmDoEd2ip8h)enyl Tetrabrom( 2 B ,o2 Dd′, Ei4p4 ,h4 7e′- )n yl ether Tetrabrom( 2 B ,o3 Dd', Ei4p6 ,h4 6e'- )nyl ether Peenttha2 eb, 2r o' ,m( 3 ,o4 Dd,4 Eip' -h5e)nyl r B 8 peenttha2 eb, rr2 o ', m4 (B ,o4 Dd',iE 5p-h9e9n)yl
4. Analysis results should be reported in mg/kg (ppm) dry weight. 5. Enter methdological limit of detection for each BDE prior to inputting raw data 6. Where analysis outputs are less than the limits of detection please enter text "<LOD" 7. Where copying and pasting entries please use paste values only 8. Where entering multiple Sample IDs please use the pop-up form IDs should be separated by a comma Analysis information: Laboratory/contractor:
Date of analysis: Dredge Areas Area i Area ii Area iii Area iv Area v Area vi
L imits of detection ( mg/kg dry weight):
Mar-21 15 2021 C5 -Lead Load, Kg/Day Apr-21 16 2021 0.2 0.2 0.1 0.1 0.3 a4y.5-201 5 2021 0.2 0.1 0.1 0.1 0.4 Ju4n.0-201 6 2021 0.1 0.1 0.0 0.1 0.1 Ju3.l5-201 7 2021 0.1 0.1 0.0 0.1 0.1 Au3g.0-201 8 2021 0.1 0.1 0.1 0.1 0.1 2.50 Sep-21 9 2021 0.2 0.2 0.1 0.2 0.1 2.00 Oct-21 10 2021 1.50 ov-21 11 2021 1.00 Dec-21 12 2021 0.3 0.50 Ja0n.0-202 13 2022 1.2 Feb-22 14 2022 Mar-22 15 2022 Apr-22 16 2022 ay-22 5 20220128-2019 2019-2020 2020-2021 EQS Limit F8 -Lead Load, Kg/Day 1.9 0.1 5.1 1.2 0.1 2.8 7.00 1.2 0.1 2.8 6.00 0.8 0.1 3.3 5.00 0.7 0.1 4.0 4.00 0.9 0.1 4.5 3.00 2.00 41..200 30..800 2018-2019 2019-2020 2020-2021 EQS Limit
Jun-22 6 2022 Jul-22 7 2022 C5 -Zinc Load, Kg/Day Aug-22 8 2022 0.90 Sep-22 9 2022 0.80 Oct-22 10 2022 0.70 ov-22 11 2022 0.60 De0c.5-022 12 2022 Ja0n.4-023 13 2023 Fe0b.3-023 14 2023 Ma0r.2-023 15 2023 0.10 Apr-23 16 2023 0.00 ay-23 5 2023 Jun-23 6 2023 Jul-23 7 2023 0.1 0.1 Aug-23 8 2023 2018-2019 2019-2020 2020-2021 Sep-23 9 2023 F8 -Zinc Load, Kg/Day 0.60 0.50 0.40 0.30 0.20 0.10 0.00 2018-2019 2019-2020 2020-2021
1 2 2021
1 3 2023
1 1 4 5 2023 2023
1 6 2023
Map Refere Date Sample Conductivi Dissolved Dissolved Alkalinity nce Submitted Your Ref. Temp pH ty µS/cm BOD mg/l O2 % O2 mg/l SS HCO3 mg/l NH4 mg/l Al µg/L Cd µg/l Cr µg/l Cu µg/l Fe µg/l Mn µg/l Ni µg/l Pb µg/l Zn µg/l Na mg/l K mg/l Mg mg/l Ca mg/l NO3 mg/l PO4 mg/l
1 15-Mar-18 Cross Vein Deads - Site 1 5.7 6.4 63.9 <2 86.9 10.9 <10 6.57 0.221 21.2 14.98 <5 <20 31.6 56.6 <5 2153 2849 4.38 <0.50 1.41 1.49 2.13 <0.07
2 15-Mar-18 Cross Vein Deads - Site 2 5.8 5.9 666 <2 87.6 11 288 4.42 0.824 633 24.6 <5 23.4 1276 646 7.1 10940 2986 2.59 0.69 1.11 2.8 3.6 <0.07
3 15-Mar-18 Cross Vein Deads - Site 3 5.7 5.8 55.8 <2 87.3 11 192 5.09 0.638 666 14.5 <5 <20 1348 488 <5 8525 1611 3.29 0.86 0.93 2.05 2.69 <0.07
CV
M1
CV
M2
CV
M3
C0
C1
C2
C3
C4
C4a
C5
C5a
C6
F1
F1.5
F2
F3
F3a
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
BH1
BH2
K1
K2
K3
K4
K5
K6
K7
K8
A
B
C
D
F
G
I
J
M
N Land drain from South West corner of Louisa House grounds - culvert under Stoney Mountain Road
P Outfall from of Kionslieu Reservoir (pipe) - SAME AS K5, K6
Q Downstream of P - where the stream from Kionslieu Reservoir outfall enters a culvert under A24 to the Louisa House Water Wheel housing
S Outfall from 3 pipes under A24 carrying water from adjacenet to Heathlands Cattery into stream next to Cattery Car Park. S is located between T and V
S1
S2
T Downstream of Q - where the water exits drainage pipe and is carried in open ditch alongside A24
V Roadside ditch alongside A24 (Springfield Terrace) - Downstream from S & T - SAME AS Foxdale F1
X Swamp ground at toe of Kionslieu West Embankment
N0
N1
N2
N2.
5
N3
N4
N5
Location Number Description Lead Total Load (kg/yr) Lead Total Load (Dissolved) (kg/yr) Lead Total Load (Particulate) (kg/yr) Zinc Total Load (kg/yr) Zinc Total Load (Dissolved) (kg/yr) Zinc Total Load (Particulate) (kg/yr)
1 Slieau Whallian Road, St Johns 50 34 16 858 755 103
2 Ballanass Stream, Lower Foxdale 315 73 242 86 75 11
3 Kerrowdhoo Farm Ford (below Cross Vein & Dixons Mine) 164 55 109 78 56 22
4 Stream below Cross Vein Mine 74 50 24 22 16 6
5 Stream below Dixons Mine 23 12 11 64 42 22
6 Lower Foxdale 136 37 99 2296 1570 726
7 Downstream of Upper Foxdale 60 26 34 1611 1611 0
8 Land drain from west side of valley - outfall downstream of Foxdale School 3 2 1 179 166 13
9 Downstream of Foxdale Mine Adit 67 44 23 2914 2679 235
10 Foxdale Mine Adit 76 1 75 364 219 145
11 Upper Foxdale Footbridge 109 36 73 751 670 81
12 Clock Tower Industrial Estate 22 19 3 182 182 0
13 Roadside ditch alongside Springfield Terrace 122 46 76 399 357 42
14 Culvert outfall into roadside ditch at west end of Springfield Terrace 5 1 4 10 7 3
15 Roadside ditch between Springfield Terrace and Louisa House 65 22 43 213 187 26
16 Stoney Mountain Road 4 1 3 11 7 4
17 Outfall of Kionslieu Reservoir 62 30 32 186 165 21
Revision Ref/Date Amendments Issued to
S3-P02 (Draft) – 28 February 2020 n/a Karen McHarg (DEFA)
S3-P03 (Draft) – 16 March 2020 Client comments addressed; further comments added from additional site walkover Karen McHarg (DEFA)
A1-C01 (Final) – 9 October 2020 Feedback from presentation and update on trial works Karen McHarg (DEFA)
A1-C02 (Final) – 26 October 2020 Final client comments addressed Karen McHarg (DEFA)
Return period (years) 10 30 100
Annual Exceedance Probability (percentage) 10 3.3 1
NFM Option Description
Woodland Planting Woodland planting can significantly reduce the generation of surface water flows. In additional to intercepting incident rainfall and evapotranspiration, the rougher vegetation (trees and undergrowth) slows the flow, delaying the flood peak. Three types of woodland planting were considered. These include: • Floodplain woodland planting – the addition of trees to the floodplain area means the trees have the most interaction with any flood flows. • Riparian woodland planting – a more than 10 to 15m wide buffer strip on each side of appropriate watercourses. • Slowly permeable soils wider woodland planting – this involves planting within areas known to have slowly permeable soils. Woodland can also trap sediment, stabilise banks, and reduce siltation, which improves local water quality. Biodiversity can also benefit by creating sites for ground and tree nesting birds, small mammals and insects and the provision of wildlife corridors across the landscape.
Leaky barriers/Runoff Attenuation Features (RAFs) On steeper ground (gradient >6%), RAF features such as blocking gullies is more applicable, whereas for less steep areas, deepened ponds and/or raised bunds can be added. Sequences of leaky barriers can also be added to hold back/retard water flows.
Improved land and soil management Improved land and soil management can be achieved by a variety of techniques, including: • Planting of cover crops to avoid over-winter bare soils or stubble covered fields, • At least annual visual inspection (autumn or spring), checking for and relieving soil capping or compaction by: soil aeration/subsoiling, and o using machinery practices which minimise compaction. o These measures have the benefits of making the soil structure more porous, thus increasing infiltration and the utilisation of the full potential storage capacity of the soil profile (when conditions permit). These measures can also help to reduce soil erosion and the transfer of sediment and pollutants from fields to rivers.
Floodplain Restoration Restoring a more natural hydrological response and regime to a river and its floodplain can slow flows, particularly if the channel and/or floodplain is highly modified or managed. Floodplain restoration also can have multiple other benefits such as significant habitat improvement and connectivity, and reduced erosion risk.
Moorland Restoration Blocking of moorland drainage features (e.g. grips) will help to reduce runoff by diverting flow onto the rougher moorland surfaces. It can also help to protect/restore any peat deposits (if present), enhance moorland biodiversity and promote carbon sequestration.
Rainfall event Total rainfall (mm)
10-year 42.5
30-year 55.9
100-year 74.4
10-year + climate change 55.6
30-year + climate change 73.0
100-year + climate change 96.6
Land use Manning’s n value
Building 0.5
Coniferous Woodland 0.15
Coniferous Woodland (Scattered) 0.08
Grassland 0.03
Heath 0.1
Inland Water 0.04
Manmade landform 0.03
Marsh Reeds or Saltmarsh 0.1
Mining area 0.02
Non-coniferous Woodland 0.15
Non-coniferous Woodland (Scattered) 0.08
Orchard 0.08
Path 0.025
Road or Track 0.02
Roadside 0.025
Rock 0.025
Rock (Scattered) 0.035
Rough Grassland 0.04
Sand 0.03
Scrub 0.06
Shingle 0.035
Land use PR value
Building 90
Coniferous woodland 15
Grassland 40
Heath 35
Manmade landform 45
Mining area 80
Non-coniferous woodland 25
Scrub 35
Water 100
Photo 2: The area to the west of the mine which is fenced-off and used for motocross activities. There is very little vegetation in this area. The motocross activities repeatedly disturb the soil/spoil in the area, making the particles more mobile than those in the rest of the area.
Photo 3: A drain which has been blocked to promote a curlew habitat.
Photo 4: One of the flow paths which provides a route for surface water to flow downhill into the stream.
Photo 5: The stream between Cross Vein and Dixon’s Mine.
Photo 6: The dam of spoil material between Cross Vein and Dixon’s Mine.
Photograph Description
Photo 7: View of the open moorland of Beary Mountain, an area which reportedly has not been grazed for 30 years. Despite this, very few native trees had (re-)established in the area, and those which have grown are not very high.
Photo 8: Upstream view of a channelised land drain on the slopes of Slieau Maggle.
Photo 9: Downstream view of the same land drain as Photo 8. Most of the land drains in the River Rhenass headwaters are steeper than this drain.
Photo 10: The forests in the Rhenass headwaters are planted on ploughed furrows. This photo is typical of the plantations in this area. As a result, the furrows could have the effect of channelling water faster downstream.
Photo 11: An area where peat moorland restoration has occurred. It was suggested that 100 acres of forest have been mulched over the past 10 years. The mulched wood is then used to fill in the furrows in which the trees were planted.
Photo 12: Sphagnum moss growing in an area which was restored in approx. 2010.
Return Period Peak flow reduction (%) Delay in peak (mins)
10-year 20 20
30-year 19 5
100-year 18 5
10-year + CC 19 10
30-year + CC 18 5
100-year + CC 12 35
Return Period Peak flow reduction (%) Delay in peak (mins)
ML 10 ML 11 ML 10 ML 11
10-year <1 10 0 5
30-year <1 7 0 15
100-year <1 <1 0 5
10-year + CC <1 8 0 15
30-year + CC <1 1 0 -5
100-year + CC <1 <1 5 0
Monitoring Line Peak flow reduction (%) Delay in peak (mins)
5 <1 0
6 <1 0
7 2 45
8 26 -15
9 19 60
Monitoring Line Slope Angle (%) Maximum Velocity (m/s)
5 8 0.09
6 22 0.13
7 10 0.02
8 19 0.06
9 20 0.08
Photograph Description
Photos 13 and 14: The unvegetated area of spoil material around Cross Vein mine. Sediments are easily entrained by surface water flows. The topography of the landscape is easily altered by water which carves flow paths through the readily mobilised particles. This material is then transported downhill into the watercourses.
Barrier Creates Traps Uses Availability Installati- Resistance Robustne- Cost
type pools sediment natural of on ease to fire ss
materials materials
Heather bale • • • • • • • •
Peat • • • • • • • •
Plastic • • • • • • • •
Stone • • • • • • • •
Timber • • • • • • • •
Photograph Description
Photos 16, 17, 18 and 19: Ephemeral streams flowing from the spoil heaps around Cross Vein. The banks of these ‘streams’ are low; often the heather plants themselves provide the ‘banks’. As such, a small barrier would be ineffective for these streams as water would easily bypass the structures.
Photos 20 and 21: Examples of how the small ephemeral flow paths could be managed. The peat barriers run horizontally across the previous flow paths. Water is held behind the structure. The structures are not particularly obvious; after a few years of vegetation growth, the barriers blend into the landscape. This drain blocking is also shown in Photo 3 (Table 4-1).
Photos 22, 23, 24 and 25: Streams which are more incised and are near- permanent watercourses. Water is constrained by the banks and would be unlikely to overflow if blocked.
Photo 26: Sequence of images showing the effects of timber barriers installed on Kinder Scout in 2013 in September 2013, September 2014 and September 201513. Such measures could be effectively applied to incised streams flowing downstream from Cross Vein.
Photo 27: A sequence of peat barriers14. A similar succession of barriers could be effectively implemented to incised streams flowing downstream from Cross Vein. Wider barriers are more appropriate to the ephemeral streams with less well-defined banks, as shown in Photos 20 and 21.
Photograph Description
Photo 28: Heather bale dams These semi-permeable structures both slow the flow of water and trap sediment. Over time, the sediment will accumulate, raising the bed of the gully which can be recolonised by vegetation. This is aided by the bales themselves, which become vegetated, such that they will blend into the landscape after a few years. The trial can investigate if the gullies are too high-energy for heather bale dams, or if structural support from timber and stone (as has occurred) provides sufficient stability.
Photo 29: Timber dams These dams should both slow the flow of water and create pools behind the barriers. Gradually, sediment will accumulate behind the dams. The raised gully could then be recolonised by vegetation. The dams have been placed appropriately to prevent undercutting and side- cutting. There is a ‘letter box’ opening below the crest to allow water to drain during and after high flows.
Photograph Description
Photo 30: Long boards Wide, perpendicular timber barriers were observed to deflect flows from a land drain away from the area of spoil material.
Photo 31: Heather bale dams The heather bale dams were observed to slow flows while allow baseflow through the dam structure.
Photo 32: Timber dams The timber dams are effective at slowing flows and creating pools behind the barriers. Sediment is building up behind the barriers which is having the additional effect of blocking flows.
Time Rainfall (mm)
(hours)
10-year 30-year 100-year 10-year + 30-year + 100-year +
climate climate climate
change change change
0.0 0.0 0.0 0.0 0.0 0.0 0.0
0.3 0.4 0.5 0.7 0.5 0.7 0.9
0.6 0.5 0.6 0.9 0.6 0.8 1.1
0.9 0.6 0.8 1.1 0.8 1.1 1.4
1.2 0.8 1.1 1.4 1.1 1.4 1.8
1.5 1.0 1.4 1.8 1.4 1.8 2.4
1.8 1.3 1.7 2.3 1.7 2.3 3.0
2.1 1.7 2.2 2.9 2.2 2.9 3.8
2.4 2.1 2.8 3.7 2.8 3.6 4.8
2.7 2.7 3.5 4.7 3.5 4.6 6.1
3.0 3.4 4.5 6.0 4.5 5.8 7.7
3.3 4.3 5.6 7.4 5.5 7.3 9.7
3.6 4.9 6.5 8.6 6.4 8.4 11.2
3.9 4.3 5.6 7.4 5.5 7.3 9.7
4.2 3.4 4.5 6.0 4.5 5.8 7.7
4.5 2.7 3.5 4.7 3.5 4.6 6.1
4.8 2.1 2.8 3.7 2.8 3.6 4.8
5.1 1.7 2.2 2.9 2.2 2.9 3.8
5.4 1.3 1.7 2.3 1.7 2.3 3.0
5.7 1.0 1.4 1.8 1.4 1.8 2.4
6.0 0.8 1.1 1.4 1.1 1.4 1.8
6.3 0.6 0.8 1.1 0.8 1.1 1.4
6.6 0.5 0.6 0.9 0.6 0.8 1.1
6.9 0.4 0.5 0.7 0.5 0.7 0.9
7.2 0.0 0.0 0.0 0.0 0.0 0.0
7.5 0.0 0.0 0.0 0.0 0.0 0.0

Full Response Text

While the Department is not legally obligated to provide a summary of the data in Appendix A, a summary is provided below to aid in understanding the collected data and observed outcomes. Data Summary

Since Autumn 2018, a programme of water analysis has been undertaken across the River Neb Catchment. A series of sites were identified and refined over time. Each retained site has been analysed monthly or more frequently. Concentrations of heavy metals have been combined with average flow rate to give a total load number. This indicates how much of the heavy metal is transported downstream at a particular site per year. This is achieved by combining monthly data.
Samples post 2019 have been further categorised as Total, Dissolved and Particulate.

Total= Whole sample acidified and then analysed. Dissolved= Sample filtered through a 0.45µm filter, the filtrate is then acidified and analysed. Particulate= The difference between Total and Dissolved.

Sampling data prior to the closure of the Cross Vein Mine site to unauthorised off-road bikes and 4x4s in March 2020 is limited. However, data for Kerrowdhoo Farm Ford is available and shows the following:

Date Lead Total Load

(kg/year) Lead Total Load (Dissolved) (kg/year) Lead Total Load (Particulate) (kg/year) Zinc Total Load

(kg/year) Zinc Total Load (Dissolved) (kg/year) Zinc Total Load (Particulate) (kg/year) October 2018-May 2019 372

160

May 2020- August 2024 114 55 59 58 56 2 % Change 2018-19 to 2020-24 -69.4%

-63.8%

The significant reduction in lead and zinc total load indicates the effectiveness of the three stages of the Cross Vein Mine works already undertaken (closing the site to off-road bikes and 4x4’s, cleaning of roadside ditches above the site to reduce surface water flows onto the site and installation of leaky dams below Cross Vein Mine).

1 2 3 4 5 Peel Marina Lagoon, Isle of Man 07/01/2022 Sample Location Plan Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units % M/M % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) Method No SOCOTEC Env Chem SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 Accreditation UKAS/MMO MMO MMO MMO MMO MMO Total Organic Carbon 45mm 31.5mm 22.4mm 16mm 11.2mm SOCOTEC Ref: Matrix − -5.5 -5.0 -4.5 -4.0 -3.5 MAR01275.001 Sediment 8.18 0.00 0.00 0.00 0.33 0.81 MAR01275.002 Sediment 19.30 0.18 0.30 0.00 4.44 4.79 MAR01275.003 Sediment

25.0 0.00 0.00 0.00 0.34 0.39 * See Report Notes Client Reference: 1.00 2.00 3.00 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 2 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 MMO MMO MMO MMO MMO MMO 8mm 5.6mm 4mm 2.8mm 2mm 1.4mm -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.75 1.36 1.86 2.01 1.27 1.11 3.54 5.19 5.34 4.58 3.49 3.23 1.79 2.65 2.88 1.95 1.59 1.59 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 3 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 MMO MMO MMO MMO MMO MMO 1mm 707µm 500µm 353.6µm 250µm 176.8µm 0.0 0.5 1.0 1.5 2.0 2.5 0.69 1.69 2.47 4.32 4.90 7.43 2.17 0.92 3.09 4.11 4.30 6.33 1.22 2.59 5.66 8.90 12.65 14.40 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 4 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 MMO MMO MMO MMO MMO MMO 125µm 88.39µm 63µm 44.2µm 31.3µm 22.1µm 3.0 3.5 4.0 4.5 5.0 5.5 8.66 8.55 8.98 8.62 8.23 7.21 6.82 6.00 5.54 5.03 4.77 4.23 10.39 6.27 4.89 4.09 3.66 3.14 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 5 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 MMO MMO MMO MMO MMO MMO 15.6µm 11µm 7.8µm 5.5µm 3.9µm 2.75µm 6.0 6.5 7.0 7.5 8.0 8.5 5.63 4.30 3.13 2.16 1.28 0.67 3.36 2.59 1.91 1.35 0.83 0.45 2.50 1.97 1.46 1.03 0.64 0.36 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 6 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 MMO MMO MMO MMO MMO 1.95µm 1.38µm 0.98µm 0.69µm 0.49µm 9.0 9.5 10.0 10.5 11.0 0.33 0.20 0.18 0.18 0.17 0.23 0.14 0.12 0.13 0.12 0.19 0.12 0.11 0.11 0.11 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 7 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 SUB_01 SUB_01 MMO MMO MMO MMO MMO 0.34µm 0.24µm 0.17µm 0.12µm 0.09µm 11.5 12.0 12.5 13.0 13.5 0.15 0.13 0.10 0.07 0.04 0.11 0.09 0.07 0.05 0.03 0.10 0.09 0.07 0.05 0.03 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 8 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment * See Report Notes Client Reference: 1.00 2.00 3.00 % (at 0.5phi intervals) % (at 0.5phi intervals) % (at 0.5phi intervals) SUB_01 SUB_01 SUB_01 MMO MMO MMO 0.06µm 0.04µm <0.04µm 14.0 14.5 14.5 0.02 0.00 0.00 0.01 0.00 0.00 0.01 0.00 0.00 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 9 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Limit of Detection 0.5 0.04 0.5 0.5 0.01 0.5 0.5 2 Accreditation UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO SOCOTEC Ref: Matrix Arsenic (As) Cadmium (Cd) Chromium (Cr) Copper (Cu) Mercury (Hg) Nickel (Ni) Lead (Pb) Zinc (Zn) MAR01275.001 Sediment 24.8 4.25 16.2 69.5 0.07 20.2 1235 849 MAR01275.002 Sediment 18.6 3.31 10.5 44.3 0.09 15.7 797 637 MAR01275.003 Sediment 19.4 2.91 7.2 32.2 0.04 15.3 492 568 100 105 104 100 93 104 97 101 <0.5 <0.04 <0.5 <0.5 <0.01 <0.5 <0.5 <2 * See Report Notes QC Blank Certified Reference Material SETOC 774 (% Recovery) SOCOTEC Env Chem* mg/Kg (Dry Weight) Client Reference: 1.00 2.00 3.00 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 10 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) Method No ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 Limit of Detection 1 1 1 1 1 1 Accreditation UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO SOCOTEC Ref: Matrix ACENAPTH ACENAPHY ANTHRACN BAA BAP BBF MAR01275.001 Sediment 53.5 69.9 248 855 912 793 MAR01275.002 Sediment 28.9 10.6 49.9 135 170 160 MAR01275.003 Sediment 43.9 11.8 65.8 87.2 107 97.9 86 116 109 89 94 72 <1 <1 <1 <1 <1 <1 ~ Indicates result is for an In-house Reference Material as no Certified Reference Materials are available. For full analyte name see method summaries 3.00 1.00 2.00 QC Blank Certified Reference Material Quasimeme QPH105MS (% Recovery) Client Reference: This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 11 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Limit of Detection Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment ~ Indicates result is for an In-house Reference Material as no Certified Reference Materials are available. For full analyte name see method summaries 3.00 1.00 2.00 QC Blank Certified Reference Material Quasimeme QPH105MS (% Recovery) Client Reference: µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 1 1 1 1 1 1 UKAS/MMO UKAS/MMO UKAS/MMO MMO MMO MMO BENZGHIP BEP BKF C1N C1PHEN C2N 624 684 461 55.3 366 102 147 142 88.5 23.6 86.9 186 84.4 92.8 66.5 25.3 98.8 220 95 95 109 101 121 84 <1 <1 <1 <1 <1 <1 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 12 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Limit of Detection Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sediment ~ Indicates result is for an In-house Reference Material as no Certified Reference Materials are available. For full analyte name see method summaries 3.00 1.00 2.00 QC Blank Certified Reference Material Quasimeme QPH105MS (% Recovery) Client Reference: µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) µg/Kg (Dry Weight) ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 ASC/SOP/303/304 1 1 1 1 1 1 MMO MMO UKAS/MMO UKAS/MMO UKAS/MMO UKAS/MMO C3N CHRYSENE DBENZAH FLUORANT FLUORENE INDPYR 84.0 679 98.7 1720 84.0 686 83.7 131 27.3 301 45.0 148 70.3 88.0 17.6 265 51.0 81.4 65 91 87 94 81 86 <1 <1 <1 <1 <1 <1 This report shall not be reproduced, except in full, without the written permission of the laboratory Results contained herewith only apply to the samples tested Page 13 of 20 Issuing Laboratory SOCOTEC, Marine Department, Advanced Chemistry and Research, Etwall House, Bretby Business Park, Ashby Road, Burton-upon-Trent DE15 0YZ Certificate of Analysis Test Report ID MAR01275 Issue Version 1 Customer Reference Peel Marine MMO Marine Sediment Analysis Units Method No Limit of Detection Accreditation SOCOTEC Ref: Matrix MAR01275.001 Sediment MAR01275.002 Sediment MAR01275.003 Sedi

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