APPENDIX D1 SEDIMENT TESTING RESULTS

Agreement No. CE 52/2007 (HY) Draft EIA ReportTuen Mun – Chek Lap Kok Link – Investigation Water Quality – Appendix D1

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APPENDIX D1

SEDIMENT TESTING RESULTS


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D1-1 METHODOLOGY AND SCOPE

D1-1.1 The site specific sediment sampling and testing for TM-CLKL were conducted atstations as shown in Figure D1.1. The survey vessel was equipped with dGPS toensure accurate positioning. At the sampling stations, sediment samples werecollected using both vibrocore and/or surface grab. Vibrocores with internaldiameter of 100mm with plastic lining were used to collect the sediment samples.Each vibrcore was pushed to penetrate the entire length of soft marine deposits(i.e., marine mud) of the specified location. The sediment depth was checked byvisual observation of vibrocores and strata-logging was conducted on-site bygeologists. Vibrocore sub-sampling was conducted according to Table D1.1. Areference sediment (surface grab) of ~30L was collected at Port Shelter (PS6,E850234, N820057).

Table D1.1 Vibrocore Sub-sampling and Laboratory TestingLaboratory Testing Depth of Sub-sample

Chemical and/or biological testing (ETWB34/2002) – Sediment and Elutriate

0-1m below seabedMid depths of vibrocore (1m)Bottom level of vibrocore (1m)

Inorganic Chemical testing – Sediment andElutriate

Seabed Level1m below mid-depths of vibrocore1m above bottom level of vibrocore

D1-1.2 Once a vibrocore sample was retrieved from the site, the core with the plasticlining intact was cut into 1m sections with both end sealed with tin foil and plasticcap. For surface grab samples, food-grade plastic bags were used to contain thesamples. For ambient marine water samples, a niskin sampler (or equivalent) wasused to collect adequate amount of marine water for testing and running ofelutriate procedure. The testing laboratory provided pre-cleaned containers for themarine water samples. The vibrocore tubes, grab sampler and niskin samplerwere washed with adequate amount of ambient marine water before eachdeployment to minimise possible cross-contamination.

D1-1.3 The sectioned cores, grab and water samples were immediately stored in arefrigerator or ice chest on board with adequate amount of ice to keep the samplecool to 0°C (without freezing) to 4°C in dark. The samples were also kept at 0°C(without freezing) to 4°C in dark during shipment to the testing laboratory. Toavoid undue temperature fluctuation and possible contamination, the duration ofon-site storage were minimised and daily delivery of the collected samples to betesting laboratory was arranged. All the samples were appropriately labelled withunique code to indicate the date, station, sampling method, and sampling depth ofeach sample.

Chemical and Biological Screening

D1-1.4 At each station, marine sediment and ambient water were collected and tested fora suit of chemical parameters as summarised in Table D1.2. The referencesediment was also tested for comparison. Chemical screening parametersincluded:

9 metals/metalloid: cadmium, chromium, copper, mercury, nickel, lead,


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silver, zinc and arsenic for all vibrocore sub-samples.

3 organic micro-pollutants: polyaromatic hydrocarbons (PAHs) (low andhigh molecular weights), polychlorinated biphenyls (PCBs) (total),tributyltin (TBT) (in pore water) for all vibrocore sub-samples; and

Chlorinated pesticides only for all grab samples.

D1-1.5 Biological screening parameters included:

10-day burrowing amphipod toxicity test;

20-day burrowing polychaete toxicity test; and

48-96 hours larvae (bivalve or echinoderm) toxicity test.

D1-1.6 Based on the chemical test results, the necessity and arrangement of biologicaltests were concluded, with a proposal of testing schedule. All analytical methodswere based on the U.S. Environmental Protection Agency (U.S. EPA) orequivalent. Ancillary testing parameters including moisture content, grain size(<63 µm), total organic carbon, ammonia (as mg N/L), and salinity in porewaterwere analysed for those samples (composited) undergoing biological testing.

Table D1.2: Summary of Laboratory TestingContaminant of Concern Reporting Limit Unit

Sediment:MetalsCadmium (Cd) 0.2 mg/kg dry weightChromium (Cr) 8 mg/kg dry weightCopper (Cu) 7 mg/kg dry weightMercury (Hg) 0.05 mg/kg dry weightNickel (Ni) 4 mg/kg dry weightLead (Pb) 8 mg/kg dry weightSilver (Ag) 0.1 mg/kg dry weightZinc (Zn) 20 mg/kg dry weightMetalloidArsenic (As) 1 mg/kg dry weightMicro-organicsLow Molecular Weight PAHs 55 mg/kg dry weightHigh Molecular Weight PAHs 170 mg/kg dry weightTotal PCBs 3 mg/kg dry weightTributyltin (in porewater) 0.015 g/lChlorinated Pesticides 0.5 mg/kg dry weightNutrientAmmonia Nitrogen (NH4-N) 0.1 mg N/kg dry weightTotal Kjeldahl Nitrogen (TKN) 50 mg N/kg dry weightNitrate Nitrogen (NO3-N) 1 mg N/kg dry weightNitrite Nitrogen (NO2-N) 1 mg N/kg dry weightTotal Phosphorus (TP) 10 mg P/kg dry weightMarine Water, Elutriate and Porewater:MetalsCadmium (Cd) 0.2 g/lChromium (Cr) 1 g/lCopper (Cu) 1 g/lMercury (Hg) 0.1 g/lNickel (Ni) 1 g/l


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Contaminant of Concern Reporting Limit UnitLead (Pb) 1 g/lSilver (Ag) 1 g/lZinc (Zn) 4 g/lMetalloidArsenic (As) 2 g/lMicro-organicsLow Molecular Weight PAHs 0.2 g/lHigh Molecular Weight PAHs 0.2 g/lTotal PCBs 0.01 g/lTributyltin 0.015 g/lChlorinated Pesticides 0.1 g/lNutrientAmmonia Nitrogen (NH4-N) 0.025 mg N/lTotal Kjeldahl Nitrogen (TKN) 1 mg N/lNitrate Nitrogen (NO3-N) 0.025 mg N/lNitrite Nitrogen (NO2-N) 0.025 mg N/lTotal Phosphorus (TP) 0.1 mg N/lOrthophosphate (OP) 0.1 mg P/lBiological Testing:10 Day amphipod toxicity - -20-day polychaete (Neanthes arenaceodentata)toxicity

- -

48-96 hour bivalve (or echinoderm) larvaetoxicity

- -

Elutriate and Porewater Tests

D1-1.7 The elutriate test (USACE, 1976) is a procedure developed to simulate the releaseof dissolved contaminants from a dredged disposal operation in open waters, andmay be considered a laboratory simulation of release of dissolved contaminantsfrom a mechanical dredged disposal operation (USEPA and USACE, 1998).Ambient marine water was collected at mid-depth of each monitoring station andused for elutriate test. The ambient marine water and sediment samples of thesame station were mixed in a ratio of 1:4 sediment:water. The mixture wasmechanically shaken vigorously for 30 minutes and allowed to settle undisturbedfor 1 hour. The liquid phase was centrifuged or filtered through a 0.45 µm filterto remove all suspended particulate matter. The extracted liquid filtrate was theelutriate to be used for further test.

D1-1.8 While contaminants may be released from the sediment during the elutriateprocess, it is also possible that contaminants in the water column be absorbed intothe sediment during the process. To allow for evaluation of this possibility, theambient marine water was tested for the same suit of metallic, metalloid, micro-organic and nutrient parameters as listed in Table D1.2.

D1-1.9 Preparation of pore water for sediment samples was conducted in accordance withthe “Method for Collection, Storage and Manipulation of Sediments for Chemicaland Toxicological Analyses: Technical Manual, USEPA 2001”. Porewatersamples were prepared by sub-sampling sufficient amount of grab sediment in apre-cleaned container in the laboratory and centrifuged at a rotation speed at 3,000rpm for approximately 10 minutes. After that, the supernatant was decantedwithout disturbing the sediment material. The porewater testing parameters and


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assessment were the same as those for elutriate samples as shown in Table D1.2.

QA/QC Requirements

D1-1.10 All the tests were commenced within 2 weeks of sample collection and/or withinthe allowable holding time for the relevant referenced standard methods. Fieldlogs and site diary were maintained for all on-site sampling works with date,equipment used, site activities and observations undertaken as far as possible.Any deviation from the standard procedures and the reasons were recorded in thelogs. Laboratory QA/QC requirements, including analyses by HOKLASaccredited laboratory, certified reference materials, spike recovery, blank samples,duplicate samples (for every 20 samples), negative/positive control for biologicaltest, proper documentation (e.g. completion of chain-of-custody forms, analysisrequest forms), etc. were strictly followed.

D1-2 SEDIMENT QUALITY TESTING RESULTS FOR TMCLKL

Chemical Screening

D1-2.1 The results of chemical screening of sediment samples are summarised in TableD1.3. There were 23 sediment sub-samples at the 10 vibrocore locations near theproposed route alignment and reclamation landings of the TM-CLKL. Withreference to the chemical tests under the ETWB TC(W) No.34/2002, 18 samplesexhibited compliance with the LCEL, but 5 samples showed exceedance of LCEL,which required biological tests to confirm their disposal options. The chemicalexceedance included metal (Pb), metalloid (As) and micro-organic pollutants(high molecular weight PAHs) concentrations. The levels of all chemicalparameters in the other sub-samples were determined to range:

<0.20-0.40 mg/kg for cadmium;

25-50 mg/kg for chromium;

10-52 mg/kg for copper;

12-25 mg/kg for nickel;

25-54 mg/kg for lead;

36-120 mg/kg for zinc;

<0.05-0.22 mg/kg for mercury;

6.0-20 mg/kg for arsenic;

<0.1-0.5 mg/kg for silver.

<0.015 g/l in interstitial water for tributyltin;

<55-190 g/kg for low molecular weight PAHs (total);

<170-3,000 g/kg for high molecular weight PAHs (total); and

<3 g/kg for total PCBs.


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Table D1.3: Chemical Screening Results of Sediment

Sample Reference Heavy Metals1

(mg/kg)Metalloid1

(mg/kg)

Organo-metallics( g/L in

porewater)

Organic PAHs( g/kg)

Organicnon-PAHs

( g/kg)

DrillholeNo.

Depth (m)From-To Cd Cr Cu Pb Hg Ni Zn Ag As TBT

TotalLMWPAH

TotalHMWPAH

Total PCB

ClassificationUnder ETWB

TC(W) 34/2002

AN01 0.0-0.9m 0.22 41 48 54 0.18 24 120 0.50 11 <0.015 <55 <170 <3.0 Category LAN01 0.9-1.9m 0.22 43 41 50 0.22 25 110 0.48 11 <0.015 <55 <170 <3.0 Category LAN02 0.0-0.9m <0.20 25 10 29 0.11 15 61 <0.10 8.2 <0.015 190 630 <3.0 Category LAN02 1.9-2.9m <0.20 25 11 31 0.07 15 62 <0.10 7.9 <0.015 <55 <170 <3.0 Category LAN03 0.0-0.9m 0.22 42 52 52 0.23 24 110 0.36 12 <0.015 <55 <170 <3.0 Category LAS01 0.1-0.9m 0.26 35 30 45 0.10 22 96 0.25 12 <0.015 <55 <170 <3.0 Category LAS01 12.0-12.9m 0.40 31 16 51 0.07 19 84 0.10 16 <0.015 <55 <170 <3.0 Category MAS02 0.2-0.9m <0.20 42 27 48 0.21 27 86 0.12 14 <0.015 <55 <170 <3.0 Category MAS02 6.0-6.9m <0.20 33 11 31 <0.05 22 67 <0.10 7.5 <0.015 <55 <170 <3.0 Category LAS02 8.9-9.4m <0.20 41 12 24 0.06 12 71 <0.10 7.3 --2 <55 <170 <3.0 Category LLS01 0.2-0.9m <0.20 32 13 32 0.05 23 83 <0.10 9.0 <0.015 220 1100 <3.0 Category LLS01 8.9-9.9m <0.20 35 12 32 <0.05 23 72 <0.10 7.0 --2 <55 <170 <3.0 Category LLS01 12.0-12.9m <0.20 35 12 32 <0.05 23 71 <0.10 6.3 --2 <55 <170 <3.0 Category LLS02 0.0-0.9m <0.20 31 12 31 0.08 21 76 <0.10 8.0 <0.015 <55 <170 <3.0 Category LLS02 8.9-9.9m <0.20 32 12 31 0.07 21 66 <0.10 6.4 <0.015 <55 <170 <3.0 Category LLS02 12.0-12.9m <0.20 30 13 34 0.06 19 66 <0.10 11 <0.015 <55 <170 <3.0 Category LLS03 0.0-0.9m 0.20 38 25 46 0.11 22 91 0.15 13 <0.015 230 <170 <3.0 Category MLS03 6.0-6.9m <0.20 30 12 32 0.06 20 70 <0.10 6.0 <0.015 400 3,000 <3.0 Category MLS03 10.9-11.8m <0.20 50 13 52 0.06 12 36 <0.10 20 <0.015 <55 <170 <3.0 Category MLS04 0.2-0.9m <0.20 32 13 34 0.08 23 78 <0.10 10 <0.015 <55 <170 <3.0 Category LLS04 6.0-6.9m <0.20 34 13 33 0.05 22 75 <0.10 7.4 <0.015 <55 <170 <3.0 Category LLS04 8.9-9.9m <0.20 34 12 32 <0.05 23 66 <0.10 8.6 <0.015 <55 <170 <3.0 Category LLS05 0.2-0.9m <0.20 31 12 31 0.07 21 78 <0.10 6.0 <0.015 <55 <170 <3.0 Category LR01G - <0.20 28 13 36 0.06 20 72 0.12 6.4 <0.015 <55 <170 <3.0 Category L

1 Values exceeding the LCELs are shown in bolded, italic and underlined with grey highlight; and2 Insufficient porewater was collected for the sample.AN = TM-CLKL northern reclamation; AS = TM-CLKL southern reclamation; LS = TM-CLKL viaducts section.

Agreement No. CE 52/2007 (HY) Draft EIA ReportTuen Mun – Chek Lap Kok Link - Investigation Water Quality - Appendix D1

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Biological Screening

D1-2.2 Biological screening was conducted for 5 sub-samples showing exceedance ofLCEL (Category M) to determine the subsequent disposal options according to theschedule summarised in Table D1.4. The results of 10-day burrowing amphipodtoxicity test, 20-day burrowing polychaete toxicity test, and 48-96 hours larvae(bivalve or echinoderm) toxicity test are summiarised in Tables D1.4 to D1.8respectively, whereas the results of ancillary parameters including grain size,moisture content, total organic carbon (TOC), ammonia, and salinity aresummarised in Table D1.8. All of the 5 samples with exceedance of LCELpassed the biological test. In summary, two classifications of sediment materialwhere identified, comprising Category L and Category M, that passes thebiological testing (Mp). The material is suitable for disposal in Type 1 open seaand Type 1 Open Sea (Dedicated) disposal.

Table D1.4: Schedule of Biological ScreeningSample ID Details of Sub-samples

AS01 Vibrocore AS01 at depth 0.1-0.9mAS02 Vibrocore AS02 at depth 0.2-0.9mLS03a Vibrocore LS03 at depth 0.0-0.9mLS03b Vibrocore LS03 at depth 6.0-6.9mLS03c Vibrocore LS03 at depth 10.9-11.8m

Table D1.5: Amphipod Survival in Relation to Reference SedimentSample ID Survival in Relation to

Reference Site (%)Statistical Difference fromReference Sediment (t-test)

Conclusion

AS01 101.0 N/A PassAS02 97.9 N/A PassLS03a 96.9 N/A PassLS03b 101.0 N/A PassLS03c 99.0 N/A Pass

Note: N/A – As the average survival rate of amphipods for test sediment was over 80% to that ofreference sediment, statistical analysis was not required.

Table D1.6: Total Dry Weight of Polychaete in Relation to ReferenceSediment

Sample ID Total Dry Weight inRelation to Reference Site

(%)

Statistical Differencefrom ReferenceSediment (t-test)

Conclusion

AS01 89.9 P=0.278Assuming equal variance

Pass

AS02 90.9 N/A PassLS03a 93.1 N/A PassLS03b 76.7 P=0.115

Assuming equal variancePass

LS03c 86.5 P=0.234Assuming equal variance

Pass

Note: N/A – As the average total dry weight for the test sediment was greater than 90% of that ofthe reference sediment, statistical analysis was not required.


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Table D1.7: Normality Survival of Bivalve Larvae in Relation to ReferenceSediment

Sample ID Normality Survival inRelation to Reference Site

(%)

Statistical Differencefrom Reference Sediment

(t-test)

Conclusion

AS01 102.2 N/A PassAS02 98.0 N/A PassLS03a 98.1 N/A PassLS03b 99.9 N/A PassLS03c 95.5 N/A Pass

Note: N/A – As the average survival rate of bivalve larvae for the test sediment was greater than80% of that of the reference sediment, statistical analysis was not required.

Table D1.8: Test Results of Ancillary ParametersSample ID Interstitial

Ammonia(mgNH3/L)

InterstitialSalinity

(ppt)

Grain Size<63m (%)

MoistureContent

(%)

TOC(% WetWeight)

TOC(% DryWeight)

AS01 2.8 32 59 94 0.11 0.21AS02 1.6 29 99 94 0.37 0.72LS03a 0.9 29 97 98 0.42 0.83LS03b 1.8 24 97 96 0.45 0.88LS03c 5.5 26 76 39 0.07 0.10

Moisture content was calculated as (Sample Wet Weight – Sample Dry Weight) / Sample DryWeight x 100%.N/A - Insufficient porewater could be obtained for analysis, so interstitial ammonia not measured.

Elutriate

D1-2.3 Elutriate tests of grab samples were carried out for the purpose of water qualityassessment of the extent of contaminant release when dredging activities takeplace. The testing parameters included heavy metals (cadmium, chromium,copper, mercury, nickel, lead, zinc and silver), metalloid (arsenic) and organicmicro-pollutants (PCB, PAHs and TBT), chlorinated pesticides and nutrientsincluding TKN, NO3-N, NO2-N, NH4-N, PO4-P and total phosphorus. The resultsare summarised in Tables D1.9 and D1.10. In general, the levels of cadmium,silver, TBT, PAHs, PCBs and pesticides were all below the reporting limits,whereas other metals and metalloid including chromium, copper, mercury, nickel,lead, zinc and cadmium, nutrients including NH4-N, NO2-N, NO3-N, TKN, PO4-Pand total phosphorus in elutriates varied among sediment samples from differentlocations.


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Table D1.9: Elutriate Test Results for Metals, Metalloid and PAHs

Metals ( g/L)Metalloid

( g/L)Organic-PAHs

(µg/L)Sample IDCd Cr Cu Ni Pb Zn Hg Ag As LMW

PAHHMWPAH

AN01 <0.2 <1 <1 <1 <1 <4 <0.1 <1 8 <0.20 <0.20AN01 <0.2 <1 <1 <1 <1 <4 <0.1 <1 11 <0.20 <0.20AN02 <0.2 3 2 <1 2 6 <0.1 <1 26.0 <0.20 <0.20AN02 <0.2 3 2 2 2 <4 <0.1 <1 18.0 <0.20 <0.20AN03 <0.2 <1 2 <1 <1 <4 <0.1 <1 6 <0.20 <0.20AS01 <0.2 <1 <1 3 <1 <4 0.34 <1 2 <0.20 <0.20AS01 <0.2 <1 <1 <1 <1 <4 <0.1 <1 3 <0.20 <0.20AS02 <0.2 <1 <1 1 <1 <4 <0.1 <1 7 <0.20 <0.20AS02 <0.2 <1 <1 2 <1 7 <0.1 <1 5.1 <0.20 <0.20AS02 <0.2 <1 2 9 1 5 <0.1 <1 <2 <0.20 <0.20LS01 <0.2 <1 <1 2 <1 <4 <0.1 <1 20.0 <0.20 <0.20LS01 <0.2 <1 <1 2 <1 <4 <0.1 <1 6.3 <0.20 <0.20LS01 <0.2 <1 <1 2 <1 <4 <0.1 <1 12.0 <0.20 <0.20LS02 <0.2 <1 <1 <1 <1 <4 <0.1 <1 70.0 <0.20 <0.20LS02 <0.2 <1 <1 2 <1 <4 <0.1 <1 19.0 <0.20 <0.20LS02 <0.2 <1 <1 <1 <1 <4 <0.1 <1 7 <0.20 <0.20LS03 <0.2 <1 1 3 <1 4 <0.1 <1 3 <0.20 <0.20LS03 <0.2 <1 2 3 <1 <4 <0.1 <1 15.0 <0.20 <0.20LS03 <0.2 <1 <1 3 <1 <4 <0.1 <1 2 <0.20 <0.20LS04 <0.2 <1 <1 1 <1 <4 <0.1 <1 14 <0.20 <0.20LS04 <0.2 <1 <1 2 <1 <4 <0.1 <1 22.0 <0.20 <0.20LS04 <0.2 <1 3 3 <1 5 <0.1 <1 3.7 <0.20 <0.20LS05 <0.2 <1 <1 2 <1 <4 <0.1 <1 17.0 <0.20 <0.20

AN = TM-CLKL northern reclamation; AS = TM-CLKL southern reclamation; LS = TM-CLKL viaductssection.


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Table 1.10: Elutriate Test Results for PCBs, TBT, Chlorinated Pesticides and NutrientsOrganic-

non-PAHs(µg/L)

Organo-metallics

(µg/L)Sample

IDTotal PCBs TBT

Chlorin-ated

Pesticides(µg/L)

NH4-N(mg/L)

NO2-N(mg/L)

NO3-N(mg/L)

TKN(mg/L)

TotalP

(mg/L)

Ortho-P

(mg/L)

AN01 <0.01 <0.015 <0.1 <0.025 <0.025 <0.025 <1.0 0.62 0.67AN01 <0.01 <0.015 <0.1 <0.025 0.03 1.8 <1.0 0.11 <0.10AN02 <0.01 <0.015 <0.1 <0.025 <0.025 <0.025 <1.0 0.23 0.16AN02 <0.01 <0.015 <0.1 <0.025 <0.025 0.34 <1.0 <0.10 <0.10AN03 <0.01 <0.015 <0.1 <0.025 <0.025 <0.025 <1.0 0.11 <0.10AS01 <0.01 <0.015 <0.1 0.034 0.065 0.26 <1.0 0.1 <0.10AS01 <0.01 <0.015 <0.1 0.95 0.081 0.33 1.2 <0.10 <0.10AS02 <0.01 <0.015 <0.1 <0.025 <0.025 0.15 <1.0 <0.10 <0.10AS02 <0.01 <0.015 <0.1 0.055 0.23 0.22 <1.0 <0.10 <0.10AS02 <0.01 <0.015 <0.1 0.084 0.38 0.29 <1.0 <0.10 <0.10LS01 <0.01 <0.015 <0.1 <0.025 <0.025 0.34 <1.0 <0.10 <0.10LS01 <0.01 <0.015 <0.1 5.1 0.12 0.36 5.3 <0.10 <0.10LS01 <0.01 <0.015 <0.1 6.1 0.094 0.39 6.5 <0.10 <0.10LS02 <0.01 <0.015 <0.1 <0.025 <0.025 <0.025 <1.0 <0.10 <0.10LS02 <0.01 <0.015 <0.1 2.5 4.6 <0.025 2.5 <0.10 <0.10LS02 <0.01 <0.015 <0.1 <0.025 5.4 <0.025 <1.0 <0.10 <0.10LS03 <0.01 <0.015 <0.1 <0.025 <0.025 0.066 <1.0 0.12 <0.10LS03 <0.01 <0.015 <0.1 3.5 0.51 0.17 4.1 <0.10 0.14LS03 <0.01 <0.015 <0.1 4.3 0.058 0.41 4.3 <0.10 <0.10LS04 <0.01 <0.015 <0.1 <0.025 <0.025 0.2 <1.0 <0.10 <0.10LS04 <0.01 <0.015 <0.1 3.5 0.12 0.33 3.6 <0.10 <0.10LS04 <0.01 <0.015 <0.1 4.3 0.099 0.31 5.1 <0.10 <0.10LS05 <0.01 <0.015 <0.1 <0.025 <0.025 0.12 <1.0 <0.10 <0.10

AN = TM-CLKL northern reclamation; AS = TM-CLKL southern reclamation; LS = TM-CLKL viaductssection.

Porewater

D1-2.4 Porewater tests were conducted also for the purpose of water quality assessmentof the potential of contaminant release when dredging and filling activities takeplace. The testing parameters included heavy metals (cadmium, chromium,copper, mercury, nickel, lead, zinc and silver), metalloid (arsenic) and organicmicro-pollutants (PCB, PAHs and TBT), chlorinated pesticides and nutrientsincluding NH4-N, PO4-P, and total phosphorus.

D1-2.5 The porewater test results of this investigation are summarised in Tables D1.11and D1.12. In general, the levels of cadmium, lead, mercury, silver, PAHs, PCBsand TBT were all below the reporting limits, whereas other metals and metalloidincluding chromium, copper, nickel, zinc and arsenic, nutrients including NH4-N,NO2-N, NO3-N, TKN, PO4-P and total phosphorus in porewater samples variedamong sediment samples from different locations.


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Table D1.11: Porewater Test Results for Metals, Metalloid and PAHsMetals (mg/kg) Metalloid

(mg/kg)Organic-PAHs

(µg/kg)Sample

IDCd Cr Cu Ni Pb Zn Hg Ag As LMW

PAHHMWPAH

AN01 <0.2 <1 2 <1 <1 <4 <0.1 <1 13 <0.20 <0.20AN02 <0.2 <1 2.9 30 <1 6.3 <0.1 <1 26 <0.20 <0.20AN03 <0.2 <1 3.1 1.6 <1 4.4 <0.1 <1 3.3 <0.20 <0.20AS01 <0.2 <1 2.6 1 <1 <4 <0.1 <1 4.4 <0.20 <0.20AS02 <0.2 <1 2 1.4 <1 5.2 <0.1 <1 6 <0.20 <0.20

AN = TM-CLKL northern reclamation; AS = TM-CLKL southern reclamation.

Table D1.12: Porewater Test Results for PCBs, TBT, Chlorinated Pesticides andNutrients

Organic-non-PAHs

(µg/L)

Organo-metallics

(µg/L)Sample

IDTotal PCBs TBT

Chlorin-ated

Pesticides(µg/L)

NH4-N(mg/L)

NO2-N(mg/L)

NO3-N(mg/L)

TKN(mg/L)

TotalP

(mg/L)

Ortho-P

(mg/L)

AN01 <0.01 <0.015 <0.1 0.06 1.2 7.6 <1.0 2.4 2.3AN02 <0.01 <0.015 <0.1 0.053 3.4 18 <1.0 1.3 1.8AN03 <0.01 <0.015 <0.1 <0.025 0.059 0.16 <1.0 0.18 0.11AS01 <0.01 <0.015 <0.1 0.73 0.17 0.09 <1.0 0.27 0.19AS02 <0.01 <0.015 <0.1 1.6 0.14 0.09 1.9 0.23 0.14

AN = TM-CLKL northern reclamation; AS = TM-CLKL southern reclamation.

D1-3 SEDIMENT QUALITY TESTING RESULTS FOR HKBCF AND HKLR

Chemical Screening

D1-3.1 The site specific sediment sampling and testing for HKBCF and HKLR wereconducted at stations as shown in Figures D1.2 and D1.3. The results ofchemical screening of sediment samples obtained in the following three samplingworks are summarised in Table D1.13.

Sampling in 2004 for HKLR marine viaduct;

Sampling in 2008 for HKBCF reclamation; and

Sampling in 2009 for HKLR reclamation.D1-3.2 There were 169 sub-samples from 27 vibrocores and 2 grab samples in the above

sampling works for HKBCF and HKLR. Most of the chemical parameters insediment were lower than the LCELs, except for arsenic and lead which exceededLCELs. The maximum concentration of arsenic and lead in sediment is 23 mg/kgat B10 (13.9 – 14.7m) and 84 mg/kg at A01 (9.9 – 10.8m).

D1-3.3 The levels of other heavy metals including cadmium, chromium, copper, nickel,lead and zinc were all below LCELs, with concentration ranged from:

Cadmium : <0.2 - 0.41 mg/kg,

Chromium : <8 - 55 mg/kg,

Copper : <7 - 34 mg/kg,


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Nickel : <4 - 39 mg/kg,

Mercury: <0.05 - 0.28 mg/kg,

Silver: <0.1 - 0.37 mg/kg,

Zinc: 13 - 125 mg/kg.D1-3.4 The concentrations of PAHs, PCBs and TBT were all below the LCELs.

D1-3.5 To summarise, there were 50 vibrocore sub-samples classified as Category M and119 sub-samples as Category L. The distribution of Category M sub-samples atdifferent locations of HKBCF and HKLR is summarised below. Biologicalscreening was proposed for Category M sediment to determine the subsequentdisposal and was shown in Table 7-10.

D1-3.6 There were 24 out of 80 sub-samples (about 30%) classified as Category M inHKBCF reclamation.

D1-3.7 There were 23 out of 52 sub-samples (about 44%) classified as Category M alongHKLR marine viaduct in western water of Airport Island and Airport Channel.

D1-3.8 There were 3 out of 37 sub-samples (about 8%) classified as Category M inHKLR reclamation.

D1-3.9 It could be generalised from the chemical screening data that the sediment inHKLR reclamation site is apparently less contaminated than that along the HKLRmarine viaduct and HKBCF reclamation site. The majority of sediment samplesclassified as Category M material exhibited elevated concentrations of arsenic insediment than LCEL, which is commonly recorded in the western waters of HongKong territory, likely coming from natural sources (probably arsenic bearingmineral). This phenomenon has triggered most of the biological screening ofCategory M sediments.


D1-13

Table D1.12: Porewater Test Results for PCBs, TBT, Chlorinated Pesticides and Nutrients

Metals (mg/kg) Metalloid(mg/kg)

Organic-PAHs(µg/kg)

Organic-non-PAHs (µg/kg)

Organo-metallics(µg/L in

pore water)

Sample

SamplingLocation

SamplingDepthbelow

Seabed(m) Cd Cr Cu Hg Ni Pb Ag Zn As LMW

PAHHMWPAH Total PCBs TBT

Classificationunder ETWB

TC(W)No. 34/2002


HKBCFA01 0.05 - 0.9 <0.20 37 26 0.24 23 48 <0.10 84 15 <55 <170 <3.0 <0.015 Category MA01 0.9 – 1.9 <0.20 35 22 0.22 22 43 <0.10 78 14 <55 <170 <3.0 <0.015 Category MA01 1.9 – 2.9 <0.20 35 21 0.13 23 41 <0.10 80 13 <55 <170 <3.0 <0.015 Category MA01 4.9 – 5.9 <0.20 27 11 0.07 17 29 <0.10 68 7.8 <55 <170 <3.0 <0.015 Category L N/AA01 7.9-8.9 0.21 29 14 0.09 16 44 <0.10 75 16 <55 <170 <3.0 <0.015 Category MA01 9.9-10.8 0.32 33 12 0.06 16 84 <0.10 70 12 <55 <170 <3.0 <0.015 Category MA02 0.2-0.9 <0.20 29 12 0.07 20 33 <0.10 74 8.0 <55 <170 <3.0 <0.015 Category L NAA02 0.9-1.9 <0.20 34 13 0.07 23 34 <0.10 84 7.9 <55 <170 <3.0 <0.015 Category L NAA02 1.9-2.9 <0.20 31 13 0.08 21 32 <0.10 80 7.1 <55 <170 <3.0 <0.015 Category L NAA02 2.9-39 <0.20 30 12 0.07 20 32 <0.10 75 7.1 <55 <170 <3.0 <0.015 Category L NAA02 4.9-5.9 <0.20 29 12 0.07 19 31 <0.10 72 7.7 <55 <170 <3.0 <0.015 Category L NAA02 7.9-8.9 <0.20 29 13 0.08 19 32 <0.10 69 6.7 <55 <170 <3.0 <0.015 Category L NAA02 12.0-12.9 <0.20 32 13 0.07 21 36 <0.10 78 7.2 <55 <170 <3.0 <0.015 Category L NAA02 14.9-15.9 <0.20 30 14 0.07 16 45 <0.10 72 13 <55 <170 <3.0 <0.015 Category MA02 16.9-17.9 0.26 29 14 0.07 16 44 <0.10 74 15 <55 <170 <3.0 <0.015 Category MA03 0.2-0.9 <0.20 34 29 0.15 22 49 0.21 100 11.9 <55 <170 <3.0 <0.015 Category L NAA03 0.9-1.9 <0.20 29 14 0.09 19 33 <0.10 75 8.0 <55 <170 <3.0 <0.015 Category L NAA03 1.9-2.9 <0.20 30 12 0.07 20 32 <0.10 77 6.1 <55 <170 <3.0 <0.015 Category L NAA03 4.9-5.9 <0.20 29 12 0.07 19 33 <0.10 72 6.3 <55 <170 <3.0 <0.015 Category L NAA03 7.9-8.9 <0.20 34 14 0.08 23 36 <0.10 81 7.4 <55 <170 <3.0 <0.015 Category L NAA03 12.0-12.9 <0.20 31 15 0.07 20 43 <0.10 78 14 <55 <170 <3.0 <0.015 Category MA03 14.9-15.9 0.27 29 14 0.08 16 42 <0.10 70 15 <55 <170 <3.0 <0.015 Category M

Samplein 2008

A03 15.9-16.35 <0.20 30 13 0.05 9.3 39 <0.10 48 15 <55 <170 <3.0 <0.015 Category M


D1-14





pore water)

Sample

SamplingLocation

SamplingDepthbelow




TC(W)No. 34/2002


A04 0.0-0.9 <0.20 32 11 0.05 23 27 <0.10 72 8.0 <55 <170 <3.0 <0.015 Category L NAA04 0.9-1.9 <0.20 34 13 0.06 24 32 <0.10 81 9.2 <55 <170 <3.0 <0.015 Category L NAA04 1.9-2.9 <0.20 34 14 0.06 24 33 <0.10 80 6.7 <55 <170 <3.0 <0.015 Category L NAA04 2.9-3.9 <0.20 33 13 0.05 23 31 <0.10 77 6.7 <55 <170 <3.0 <0.015 Category L NAA04 4.9-5.9 <0.20 30 13 0.06 22 34 <0.10 77 5.9 <55 <170 <3.0 <0.015 Category L NAA04 7.9-8.9 <0.20 34 14 0.09 22 36 <0.10 80 6.7 <55 <170 <3.0 <0.015 Category L NAA04 12.15-12.9 <0.20 33 14 0.08 22 35 <0.10 77 6.6 <55 <170 <3.0 <0.015 Category L NAA04 14.9-15.9 <0.20 31 14 0.08 20 37 <0.10 70 11 <55 <170 <3.0 <0.015 Category L NAA04 18.05-18.9 0.20 33 16 0.08 20 44 0.11 82 14 <55 <170 <3.0 <0.015 Category MB05 0.25-0.9 0.20 39 31 0.28 26 50 0.12 90 17 <55 <170 <3.0 <0.015 Category MB05 0.9-1.9 0.20 41 32 0.25 28 48 0.11 91 17 <55 <170 <3.0 <0.015 Category MB05 1.9-2.9 <0.20 38 24 0.16 25 44 0.11 83 15 <55 <170 <3.0 <0.015 Category MB05 4.9-5.9 <0.20 35 15 0.07 25 40 <0.10 86 9.3 <55 <170 <3.0 <0.015 Category L NAB05 7.9-8.9 0.27 32 15 0.08 20 42 0.10 78 14 <55 <170 <3.0 <0.015 Category MB05 12.0-12.9 0.41 26 15 0.08 14 47 0.11 74 8.4 <55 <170 <3.0 <0.015 Category L NAB05 14.9-15.9 <0.20 <8.0 <7.0 <0.05 <4.0 16 <0.10 13 2.0 <55 <170 <3.0 <0.015 Category L NAB05 15.9-16.1 <0.20 <8.0 <7.0 0.05 <4.0 21 <0.10 18 15 <55 <170 <3.0 <0.015 Category MB06 0.35-0.9 <0.20 35 14 0.08 25 34 <0.10 90 9.7 <55 <170 <3.0 <0.015 Category L NAB06 0.9-1.9 <0.20 33 14 0.08 24 33 <0.10 85 8.5 <55 <170 <3.0 <0.015 Category L NAB06 1.9-2.9 <0.20 31 14 0.07 22 30 <0.10 75 7.4 <55 <170 <3.0 <0.015 Category L NAB06 4.9-5.9 <0.20 34 14 0.08 23 35 <0.10 85 8.3 <55 <170 <3.0 <0.015 Category L NAB06 7.9-8.9 <0.20 33 14 0.07 22 34 <0.10 78 5.8 <55 <170 <3.0 <0.015 Category L NAB06 9.9-10.9 <0.20 28 11 0.06 19 29 <0.10 61 7.6 <55 <170 <3.0 <0.015 Category L NAB06 10.9-11.35 <0.20 25 21 <0.05 20 35 <0.10 88 5.4 <55 <170 <3.0 <0.015 Category L NAB07 0.0-0.9 <0.20 33 14 0.06 24 35 <0.10 74 8.0 <55 <170 <3.0 <0.015 Category L NAB07 0.9-1.9 <0.20 34 12 0.06 24 29 <0.10 77 8.6 <55 <170 <3.0 <0.015 Category L NAB07 1.9-2.9 <0.20 33 13 0.07 23 32 <0.10 77 7.4 <55 <170 <3.0 <0.015 Category L NAB07 2.9-3.9 <0.20 33 13 0.05 23 32 <0.10 77 6.3 <55 <170 <3.0 <0.015 Category L NA


D1-15





pore water)

Sample

SamplingLocation

SamplingDepthbelow




TC(W)No. 34/2002


B07 4.9-5.9 <0.20 32 13 0.06 21 32 <0.10 72 6.2 <55 <170 <3.0 <0.015 Category L NAB07 7.9-8.9 <0.20 35 14 0.07 23 36 <0.10 77 6.9 <55 <170 <3.0 <0.015 Category L NAB07 12.0-12.9 <0.20 32 12 0.06 20 31 <0.10 61 9.5 <55 <170 <3.0 <0.015 Category L NAB07 14.9-15.9 0.22 28 14 0.06 15 40 <0.10 64 14 <55 <170 <3.0 <0.015 Category MB08 0.0-0.9 <0.20 29 12 0.08 21 30 <0.10 76 8.1 <55 <170 <3.0 <0.015 Category L NAB08 0.9-1.9 <0.20 30 12 0.08 22 30 <0.10 75 7.0 <55 <170 <3.0 <0.015 Category L NAB08 1.9-2.9 <0.20 32 13 0.07 23 34 0.12 83 5.9 <55 <170 <3.0 <0.015 Category L NAB08 2.9-3.9 <0.20 31 13 0.08 21 33 <0.10 79 6.9 <55 <170 <3.0 <0.015 Category L NAB08 4.9-5.9 <0.20 31 14 0.07 21 38 <0.10 75 6.2 <55 <170 <3.0 <0.015 Category L NAB08 7.9-8.9 <0.20 32 14 0.08 23 36 <0.10 81 7.2 <55 <170 <3.0 <0.015 Category L NAB08 12.1-12.9 <0.20 33 14 0.07 22 35 <0.10 77 7.7 <55 <170 <3.0 <0.015 Category L NAB08 14.9-15.9 <0.20 32 13 0.07 22 35 <0.10 71 9.3 <55 <170 <3.0 <0.015 Category L NAB08 18.0-18.9 <0.20 35 17 0.08 21 47 <0.10 83 13 <55 <170 <3.0 <0.015 Category MB09 0.1-0.9 <0.20 39 34 0.15 25 52 0.37 110 12 <55 <170 <3.0 <0.015 Category MB09 0.9-1.9 0.24 37 26 0.12 22 47 0.19 97 14 <55 <170 <3.0 <0.015 Category MB09 1.9-2.9 <0.20 32 13 0.07 23 30 <0.10 75 8.0 <55 <170 <3.0 <0.015 Category L NAB09 4.9-5.9 <0.20 32 14 0.07 22 33 <0.10 80 6.9 <55 <170 <3.0 <0.015 Category L NAB09 7.9-8.9 <0.20 34 14 0.07 23 36 <0.10 82 6.4 <55 <170 <3.0 <0.015 Category L NAB09 12.1-12.9 <0.20 32 15 0.07 20 40 <0.10 74 11 <55 <170 <3.0 <0.015 Category L NAB09 14.9-15.9 0.27 31 15 0.07 18 46 0.14 80 14 <55 <170 <3.0 <0.015 Category MB09 18.0-18.9 0.28 29 16 0.08 16 45 0.10 73 13 <55 <170 <3.0 <0.015 Category MB10 0.05-0.9 0.22 41 29 0.19 26 51 0.17 92 19 <55 <170 <3.0 <0.015 Category MB10 0.9-1.9 <0.20 35 14 0.06 24 32 <0.10 79 8.7 <55 <170 <3.0 <0.015 Category L NAB10 1.9-2.9 <0.20 34 14 0.07 23 31 <0.10 78 7.1 <55 <170 <3.0 <0.015 Category L NAB10 2.9-3.9 <0.20 34 13 0.06 23 32 <0.10 78 7.7 <55 <170 <3.0 <0.015 Category L NAB10 4.9-5.9 <0.20 36 14 0.07 23 36 <0.10 78 6.1 <55 <170 <3.0 <0.015 Category L NAB10 7.9-8.9 <0.20 34 14 0.07 23 33 <0.10 73 7.4 <55 <170 <3.0 <0.015 Category L NAB10 12.0-12.9 <0.20 34 13 0.06 21 34 <0.10 65 8.0 <55 <170 <3.0 <0.015 Category L NA


D1-16





pore water)

Sample

SamplingLocation

SamplingDepthbelow




TC(W)No. 34/2002


B10 13.9-14.7 <0.20 34 15 0.06 20 42 <0.10 70 23 <55 <170 <3.0 <0.015 Category MHong Kong Link Road

A1 0.55-1.00 <0.2 33 24 0.1 21 29 0.2 83 15 <55 <170 <3.0 <0.015 Category MA1 1.0-2.0 <0.2 37 21 0.16 22 31 0.1 74 17 <55 <170 <3.0 <0.015 Category MA1 2.0-3.0 <0.2 37 20 0.13 23 29 0.1 71 15 <55 <170 <3.0 <0.015 Category MA1 5.0-6.0 <0.2 32 15 0.08 20 28 <0.1 64 12 <55 <170 <3.0 <0.015 Category L NAA1 8.0-9.0 <0.2 36 13 0.09 22 25 0.1 73 11 <55 <170 <3.0 <0.015 Category L NAA1 14.0-15.0 <0.2 18 6 <0.05 9 13 <0.1 28 8 <55 <170 <3.0 <0.015 Category L NAA2 0.47-1.00 <0.2 40 28 0.13 26 28 0.2 96 19 <55 <170 <3.0 <0.015 Category MA2 2.0-3.0 <0.2 36 16 0.1 22 24 <0.1 72 13 <55 <170 <3.0 <0.015 Category MA2 5.0-6.0 <0.2 31 10 0.06 23 19 <0.1 71 7 <55 <170 <3.0 <0.015 Category L NAA2 8.0-9.0 <0.2 38 14 0.07 25 22 0.1 79 13 <55 <170 <3.0 <0.015 Category MA3 0.41-1.0 <0.2 29 16 0.11 19 20 0.1 70 12 <55 <170 <3.0 <0.015 Category L NAA3 2.0-3.0 <0.2 34 11 0.05 24 17 <0.1 75 7 <55 <170 <3.0 <0.015 Category L NAA3 5.0-6.0 <0.2 36 14 0.07 25 21 <0.1 81 15 <55 <170 <3.0 <0.015 Category MA3 8.0-9.0 <0.2 37 14 0.08 24 22 0.1 79 11 <55 <170 <3.0 <0.015 Category L NAA3 14.0-15.0 <0.2 35 14 0.07 24 21 <0.1 80 11 <55 <170 <3.0 <0.015 Category L NAA4 0.14-1.00 <0.2 39 31 0.12 35 24 0.1 79 15 <55 <170 <3.0 <0.015 Category MA4 1.0-2.0 <0.2 35 11 0.17 24 17 <0.1 74 7 <55 <170 <3.0 <0.015 Category L NAA4 2.0-3.0 <0.2 36 11 <0.05 25 17 <0.1 76 9 <55 <170 <3.0 <0.015 Category L NAA4 5.0-6.0 <0.2 38 15 0.06 26 22 <0.1 84 12 <55 <170 <3.0 <0.015 Category L NAA4 8.0-9.0 <0.2 40 15 0.07 26 23 0.1 83 13 <55 <170 <3.0 <0.015 Category MA4 14.0-15.0 <0.2 40 15 0.07 26 25 0.1 84 13 <55 <170 <3.0 <0.015 Category MA5 0.17-1.00 <0.2 39 11 <0.05 23 20 0.2 70 8 <55 <170 <3.0 <0.015 Category L NAA5 2.0-3.0 <0.2 43 12 <0.05 25 22 0.2 77 8 <55 <170 <3.0 <0.015 Category L NAA5 5.0-6.0 <0.2 45 15 0.06 26 27 0.2 84 11 <55 <170 <3.0 <0.015 Category L NA

Samplein 2004

A5 8.0-9.0 <0.2 49 21 0.06 27 29 0.2 79 13 <55 <170 <3.0 <0.015 Category M


D1-17





pore water)

Sample

SamplingLocation

SamplingDepthbelow




TC(W)No. 34/2002


A5 14.0-15.0 <0.2 50 20 0.08 27 28 0.2 78 14 <55 <170 <3.0 <0.015 Category MB8 0.25-1.00 <0.2 45 32 0.17 28 40 0.2 108 19 <55 <170 <3.0 <0.015 Category MB8 1.0-2.0 <0.2 34 13 0.06 22 24 <0.1 71 10 <55 <170 <3.0 <0.015 Category L NAB8 2.0-3.0 <0.2 37 13 0.06 24 25 0.1 78 12 <55 <170 <3.0 <0.015 Category L NAB8 5.0-6.0 <0.2 28 9 <0.05 15 20 <0.1 52 11 <55 <170 <3.0 <0.015 Category L NAB8 8.0-9.0 <0.2 25 8 <0.05 14 20 <0.1 45 11 <55 <170 <3.0 <0.015 Category L NAB8 14.0-15.0 <0.2 42 16 0.07 26 29 0.1 74 12 <55 <170 <3.0 <0.015 Category L NAB9 0.90-1.00 <0.2 60 21 0.08 39 39 0.2 125 18 <55 <170 <3.0 <0.015 Category MB9 1.0-2.0 <0.2 30 11 0.06 19 21 <0.1 64 10 <55 <170 <3.0 <0.015 Category L NAB9 2.0-3.0 <0.2 29 11 0.07 18 21 <0.1 63 11 <55 <170 <3.0 <0.015 Category L NAB9 5.0-6.0 <0.2 35 9 <0.05 15 32 <0.1 47 23 <55 <170 <3.0 <0.015 Category MB9 7.0-8.0 <0.2 56 18 0.06 28 32 0.1 82 14 <55 <170 <3.0 <0.015 Category MB14 0.25-1.00 <0.2 46 27 0.14 29 30 0.2 101 18 <55 <170 <3.0 <0.015 Category MB14 2.0-3.0 <0.2 43 15 0.07 28 22 0.1 89 11 <55 <170 <3.0 <0.015 Category L NAB14 5.0-6.0 <0.2 43 16 0.08 28 26 0.1 89 13 <55 <170 <3.0 <0.015 Category MB14 7.0-8.0 <0.2 31 11 0.06 13 22 <0.1 47 11 <55 <170 <3.0 <0.015 Category L NAB15 0.45-1.00 <0.2 47 32 0.19 28 41 0.2 109 20 <55 <170 <3.0 <0.015 Category MB15 1.0-2.0 <0.2 39 20 0.1 24 31 0.1 82 15 <55 <170 <3.0 <0.015 Category MB15 2.0-3.0 <0.2 37 12 <0.05 24 24 <0.1 78 10 <55 <170 <3.0 <0.015 Category L NAB15 5.0-6.0 <0.2 36 13 0.06 23 24 <0.1 73 11 <55 <170 <3.0 <0.015 Category L NAB15 8.0-9.0 <0.2 42 15 0.05 24 36 0.1 68 18 <55 <170 <3.0 <0.015 Category MB16 0.0-1.0 <0.2 46 13 <0.05 23 24 <0.1 76 11 <55 <170 <3.0 <0.015 Category L NAB16 1.0-2.0 <0.2 28 8 <0.05 12 16 <0.1 42 9 <55 <170 <3.0 <0.015 Category L NAB16 2.0-3.0 <0.2 16 4 <0.05 5 10 <0.1 19 6 <55 <170 <3.0 <0.015 Category L NAB17 0.0-1.0 <0.2 28 10 <0.05 13 20 <0.1 49 9 <55 <170 <3.0 <0.015 Category L NAG13 Surface <0.2 41 28 0.18 26 33 0.2 101 18 <55 <170 <3.0 <0.015 Category M


D1-18





pore water)

Sample

SamplingLocation

SamplingDepthbelow




TC(W)No. 34/2002


G14 surface <0.2 44 31 0.18 28 38 0.2 113 18 <55 <170 <3.0 <0.015 Category MC11 0.3-0.9 <0.2 39 16 0.05 27 34 <0.1 99 8 <550 <1700 <3.0 N/A* Category L NAC11 0.9-1.9 <0.2 39 15 0.07 26 38 <0.1 96 9 <550 <1700 <3.0 N/A* Category L NAC11 1.9-2.9 <0.2 39 14 0.06 26 32 <0.1 97 10 <550 <1700 <3.0 N/A* Category L NAC11 4.9-5.9 <0.2 39 15 0.06 28 37 <0.1 93 8 <550 <1700 <3.0 N/A* Category L NAC11 7.9-8.9 <0.2 41 14 <0.05 26 35 <0.1 81 14 <550 <1700 <3.0 N/A* Category MC11 9.9-10.8 <0.2 19 6 <0.05 6 22 <0.1 28 13 <550 <1700 <3.0 N/A* Category MC12 0.2-0.9 <0.2 38 10 <0.05 25 20 <0.1 81 7 <550 <1700 <3.0 N/A* Category L NAC12 0.9-1.9 <0.2 48 15 <0.05 29 29 0.1 109 10 <550 <1700 <3.0 N/A* Category L NAC12 1.9-2.9 <0.2 52 17 <0.05 31 33 0.1 112 11 <550 <1700 <3.0 N/A* Category L NAC12 4.9-5.9 <0.2 53 17 0.06 31 37 0.1 113 8 <550 <1700 <3.0 N/A* Category L NAC12 7.9-8.9 <0.2 48 16 0.05 30 34 0.1 98 9 <550 <1700 <3.0 N/A* Category L NAC12 8.9-9.9 <0.2 48 15 <0.05 28 35 0.1 93 10 <550 <1700 <3.0 N/A* Category L NAC12 9.9-10.4 <0.2 11 4 <0.05 6 12 <0.1 26 4 <550 <1700 <3.0 N/A* Category L NAC13 0.2-0.9 <0.2 29 12 <0.05 25 25 <0.1 71 7 <550 <1700 <3.0 N/A* Category L NAC13 0.9-1.9 <0.2 35 14 <0.05 27 28 0.1 86 9 <550 <1700 <3.0 N/A* Category L NAC13 1.9-2.9 <0.2 37 15 <0.05 27 31 0.1 91 8 <550 <1700 <3.0 N/A* Category L NAC13 4.9-5.9 <0.2 41 16 0.06 28 33 0.1 91 6 <550 <1700 <3.0 N/A* Category L NAC13 7.9-8.9 <0.2 40 16 0.05 29 34 0.1 88 8 <550 <1700 <3.0 N/A* Category L NAC13 9.9-10.9 <0.2 7 2 <0.05 4 29 <0.1 14 4 <550 <1700 <3.0 N/A* Category L NAC14 0.3-0.9 <0.2 37 10 <0.05 24 21 <0.1 88 7 <550 <1700 <3.0 N/A* Category L NAC14 0.9-1.9 <0.2 49 17 0.07 31 34 0.1 115 11 <550 <1700 <3.0 N/A* Category L NAC14 1.9-2.9 <0.2 48 16 0.05 30 31 0.1 112 8 <550 <1700 <3.0 N/A* Category L NAC14 4.9-5.9 <0.2 55 17 0.05 32 36 0.1 118 9 <550 <1700 <3.0 N/A* Category L NAC14 7.9-8.9 <0.2 55 18 <0.05 32 35 0.2 116 14 <550 <1700 <3.0 N/A* Category MC14 10.9-11.9 <0.2 19 6 <0.05 10 20 0.1 36 5 <550 <1700 <3.0 N/A* Category L NAC14 12.0-12.6 <0.2 10 3 <0.05 4 19 <0.1 22 2 <550 <1700 <3.0 N/A* Category L NA

Samplein 2009

C15 0.1-0.9 <0.2 36 10 <0.05 24 20 <0.1 83 6 <550 <1700 <3.0 N/A* Category L NA


D1-19





pore water)

Sample

SamplingLocation

SamplingDepthbelow




TC(W)No. 34/2002


C15 0.9-1.9 <0.2 45 15 <0.05 28 31 0.1 107 8 <550 <1700 <3.0 N/A* Category L NAC15 1.9-2.9 <0.2 48 15 <0.05 28 30 0.1 108 8 <550 <1700 <3.0 N/A* Category L NAC15 4.9-5.9 <0.2 49 16 <0.05 29 35 0.1 111 8 <550 <1700 <3.0 N/A* Category L NAC15 7.9-8.9 <0.2 49 16 <0.05 28 36 0.1 101 9 <550 <1700 <3.0 N/A* Category L NAC15 10.9-11.8 <0.2 35 8 <0.05 9 48 <0.1 28 9 <550 <1700 <3.0 N/A* Category L NAC16 0.2-0.9 <0.2 26 12 <0.05 22 30 <0.1 65 8 <550 <1700 <3.0 N/A* Category L NAC16 0.9-1.9 <0.2 33 12 <0.05 27 25 <0.1 81 8 <550 <1700 <3.0 N/A* Category L NAC16 1.9-2.9 <0.2 36 15 <0.05 27 28 0.1 87 7 <550 <1700 <3.0 N/A* Category L NAC16 4.9-5.9 <0.2 35 14 <0.05 26 30 0.1 81 8 <550 <1700 <3.0 N/A* Category L NAC16 7.9-8.9 <0.2 36 14 <0.05 26 32 0.1 75 7 <550 <1700 <3.0 N/A* Category L N/A

(1) Bold value in shaded cell denote the contaminate level exceeds the Lower Chemical Exceedance Level (LCEL) but not exceeding the Upper Chemical Exceedance Level (UCEL);(2) Bold value with # denoted the contaminate level exceeds both the LCEL and UCEL;(3) Low molecular weight PAHs include naphthalene, acenaphthylene. acenaphthene, fluorene, phenanthrene and anthracene; high molecular weight PAHs include chrysene,

benzo(a)anthracene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenzo(a.h.)anthracene, fluoranthene, indeno(1.2.3-cd)pyrene, pyrene and benzo(g.h.i)perylene;and

(4) Total PCBs include 2,4' dichlorobiphenyl, 2,2',5 trichlorobiphenyl, 2,4',4 trichlorobiphenyl, 2,2',3,5 tetrachlrobiphenyl, 2,2',5,5' tetrachlrobiphenyl, 2,3',4,4' tetrachlrobiphenyl, 3,3',4,4'tetrachlrobiphenyl, 2,2',4,5,5' pentachlrobiphenyl, 2,3,3',4,4' pentachlrobiphenyl, 2,3',4,4',5' pentachlrobiphenyl, 3,3',4,4,5' pentachlrobiphenyl, 2,2',3,3',4,4' hexachlrobiphenyl,2,2',3,4,4',5' hexachlrobiphenyl, 2,2',4,4',5,5' hexachlrobiphenyl, 3,3',4,4',5,5' hexachlrobiphenyl, 2,2',3,3',4,4',5 heptachlrobiphenyl, 2,2',3,4,4',5,5' heptachlrobiphenyl and 2,2'3,4',5,5',6heptachlrobiphenyl;

(5) N/A*-Insufficient interstitial water for analysis of TBT.


D1-20


D1-3.10 A total of 50 sediment samples classified as Category M requiring biologicalscreening. Table D1.13 summarized the samples requiring biological screeningtest.

D1-3.11 The results of 10-day burrowing amphipod toxicity test, 20-day burrowingpolychaete toxicity test, and 48-96 hours larvae (bivalve or echinoderm) toxicitytest are summiarised in Tables D1.14 – D1.16 respectively, whereas the results ofancillary parameters including grain size, moisture content, total organic carbon(TOC), ammonia, and salinity are summarised in Table D1.17.

D1-3.12 The results showed that all the samples were passed the biological tests except thesamples A01 (9.9 -10.8m), A5 (8.0-9.0m & 14.0-15.0m), B9 (0.9-1.0m, 5.0-6.0m& 7.0-8.0m), B15 (0.45-1.00m, 1.0-2.0m & 8.0-9.0m), G14, C11 (7.9-8.9m, 9.9-10.8m) and C14 (7.9-8.9m). The results of ancillary parameters showed thatinterstitial ammonia ranged from <0.03 - 36mgNH3/L while TOC levels (% dryweight) ranged from 010 - 0.94%.

D1-3.13 The highest levels of interstitial ammonia and TOC content were determined insample B05 (1.9 - 2.9m) and A01 (9.9 - 10.8m) respectively. The grain size(<63µm) ranges from 71 - 101%. The highest moisture content (107%) andinterstitial salinity (35ppt) were found at sample B09 (0.1 - 0.9m) and B05 (0.25 -0.9m) respectively.

Table D1.13 Schedule of Sediment Sample for Biological ScreeningSample Sample Location Sampling Depth below seabed (m) No. of Sample

HKBCFA01 0.05 - 0.9 1A01 0.9 – 1.9 1A01 1.9 – 2.9 1A01 7.9-8.9 1A01 9.9-10.8 1A02 14.9-15.9 1A02 16.9-17.9 1A03 12.0-12.9 1A03 14.9-15.9 1A03 15.9-16.35 1A04 18.05-18.9 1B05 0.25-0.9 1B05 0.9-1.9 1B05 1.9-2.9 1B05 7.9-8.9 1B05 15.9-16.1 1B07 14.9-15.9 1B08 18.0-18.9 1B09 0.1-0.9 1B09 0.9-1.9 1B09 14.9-15.9 1B09 18.0-18.9 1B10 0.05-0.9 1

Sampling forHKBCFreclamation(2008)

B10 13.9-14.7 1


D1-21

Sample Sample Location Sampling Depth below seabed (m) No. of Sample

HKLRA1 0.55-1.00 1A1 1.0–2.0 1A1 2.0–3.0 1A2 0.47–1.00 1A2 2.0–3.0 1A2 8.0–9.0 1A3 5.0–6.0 1A4 0.14–1.00 1A4 8.0-9.0 1A4 14.0–15.0 1A5 8.0–9.0 1A5 14.0-15.0 1B8 0.25–1.00 1B9 0.9–1.0 1B9 5.0-6.0 1B9 7.0-8.0 1B14 0.25-1.00 1B14 5.0-6.0 1B15 0.45-1.00 1B15 1.0-2.0 1B15 8.0-9.0 1G13 Surface 1

Sampling forHKLRviaduct(2004)

G14 Surface 1C11 7.9-8.9 1C11 9.9–10.8 1

Sampling forHKLRreclamation(2009) C14 7.9-8.9 1

Table D1.14 Amphipod Survival in Relation to Reference SedimentSample Sample

LocationSampling

Depth belowseabed (m)

Survival inRelation to

Reference (%)

Statisticaldifference with

Reference

Result

HKBCFA01 0.05 - 0.9 96.8 Note 1 PassA01 0.9 – 1.9 95.8 Note 1 PassA01 1.9 – 2.9 96.8 Note 1 PassA01 7.9-8.9 96.8 Note 1 PassA01 9.9-10.8 91.6 Note 1 PassA02 14.9-15.9 100.0 Note 1 PassA02 16.9-17.9 N/A* N/A* N/A*A03 12.0-12.9 97.9 Note 1 PassA03 14.9-15.9 100.0 Note 1 PassA03 15.9-16.35 97.9 Note 1 PassA04 18.05-18.9 93.7 Note 1 PassB05 0.25-0.9 96.8 Note 1 PassB05 0.9-1.9 96.8 Note 1 PassB05 1.9-2.9 96.8 Note 1 PassB05 7.9-8.9 95.8 Note 1 Pass


B05 15.9-16.1 N/A* N/A* N/A*


D1-22

Sample SampleLocation

SamplingDepth belowseabed (m)


Reference (%)


Reference

Result

B07 14.9-15.9 95.8 Note 1 PassB08 18.0-18.9 93.7 Note 1 PassB09 0.1-0.9 93.7 Note 1 PassB09 0.9-1.9 93.7 Note 1 PassB09 14.9-15.9 100.0 Note 1 PassB09 18.0-18.9 96.8 Note 1 PassB10 0.05-0.9 96.8 Note 1 PassB10 13.9-14.7 96.8 Note 1 Pass

HKLRA1 0.55-1.00A1 1.0–2.0A1 2.0–3.0

105.6 Note 1 Pass

A2 0.47–1.00A2 2.0–3.0A2 8.0–9.0

93.7 Note 1 Pass

A3 5.0–6.0 91.7 Note 1 PassA4 0.14–1.00A4 8.0-9.0A4 14.0–15.0

81.9 Note 1 Pass

A5 8.0–9.0A5 14.0-15.0

81.9 Note 1 Pass

B8 0.25–1.00 93.1 Note 1 PassB9 0.9–1.0B9 5.0-6.0B9 7.0-8.0

79.2 P=0.0008 Fail

B14 0.25-1.00B14 5.0-6.0

81.9 Note 1 Pass

B15 0.45-1.00B15 1.0-2.0B15 8.0-9.0

76.4 P=0.0005 Fail

G13 Surface 88 Note 1 Pass

Sampling forHKLR viaduct(2004)

G14 Surface 82.6 Note 1 PassC11 7.9-8.9 51.0 P<0.05 FailC11 9.9–10.8 48.0 P<0.05 Fail

Sampling forHKLRreclamation(2009) C14 7.9-8.9 48.0 P<0.05 FailNote: 1) As the average survival rate of amphipods for test sediment was greater than 80% of that of

the reference sediment, statistical analysis was not required2) N/A – Insufficient sample for biological test.


D1-23

Table D1.15 Total Dry Weight of Polychaete in Rfelation to ReferenceSediment



Total Dry Weightin Relation to

Reference Site(%)


Reference

Result

HKBCFA01 0.05 - 0.9 101.9 Note 1 PassA01 0.9 – 1.9 87.2 P=0.082 PassA01 1.9 – 2.9 87.6 P=0.156 PassA01 7.9-8.9 92.6 Note 1 PassA01 9.9-10.8 71.9 P<0.05 FailA02 14.9-15.9 98.8 Note 1 PassA02 16.9-17.9 N/A* N/A* N/A*A03 12.0-12.9 96.9 Note 1 PassA03 14.9-15.9 73.3 P=0.116 PassA03 15.9-16.35 74.4 P=0.126 PassA04 18.05-18.9 93.1 Note 1 PassB05 0.25-0.9 71.3 P=0.1 PassB05 0.9-1.9 71.3 P=0.102 PassB05 1.9-2.9 76.9 P=0.147 PassB05 7.9-8.9 68.8 P=0.089 PassB05 15.9-16.1 N/A* N/A* N/A*B07 14.9-15.9 108.1 Note 1 PassB08 18.0-18.9 83.4 P=0.074 PassB09 0.1-0.9 71.2 P=0.101 PassB09 0.9-1.9 83.2 P=0.237 PassB09 14.9-15.9 73.4 P=0.118 PassB09 18.0-18.9 74.7 P=0.123 PassB10 0.05-0.9 98.6 Note 1 Pass


B10 13.9-14.7 103.9 Note 1 PassHKLR

A1 0.55-1.00A1 1.0–2.0A1 2.0–3.0

140.3 Note 1 Pass

A2 0.47–1.00A2 2.0–3.0A2 8.0–9.0

109.8 Note 1 Pass

A3 5.0–6.0 82.8 P=0.1146 PassA4 0.14–1.00A4 8.0-9.0A4 14.0–15.0

74.9 P=0.0642 Pass

A5 8.0–9.0A5 14.0-15.0

54.7 P=0.0028 Fail

B8 0.25–1.00 130.8 Note 1 PassB9 0.9–1.0B9 5.0-6.0B9 7.0-8.0

70.5 P=0.0174 Fail

Sampling forHKLR viaduct(2004)

B14 0.25-1.00 82.9 P=0.0822 Pass


D1-24



Total Dry Weightin Relation to

Reference Site(%)


Reference

Result

B14 5.0-6.0B15 0.45-1.00B15 1.0-2.0B15 8.0-9.0

97.9 Note 1 Pass

G13 Surface 113.2 Note 1 PassG14 Surface 114.3 Note 1 PassC11 7.9-8.9 79.0 P=0.154 PassC11 9.9–10.8 61.6 P=0.0030 Fail

Sampling forHKLRreclamation(2009) C14 7.9-8.9 98.0 Note 1 PassNote: 1) As the average total dry weight for the test sediment was greater than 90% of that of the

reference sediment, statistical analysis was not required2) N/A – Insufficient sample for biological test.

Table D1.16 Normality Survival of Bivalve Larvae in Relation toReference Sediment




Reference Site(%)


Reference

Result

HKBCFA01 0.05 - 0.9 99.3 Note 1 PassA01 0.9 – 1.9 98.9 Note 1 PassA01 1.9 – 2.9 100.1 Note 1 PassA01 7.9-8.9 101.4 Note 1 PassA01 9.9-10.8 100.7 Note 1 PassA02 14.9-15.9 100.2 Note 1 PassA02 16.9-17.9 N/A* N/A* N/A*A03 12.0-12.9 103.7 Note 1 PassA03 14.9-15.9 98.4 Note 1 PassA03 15.9-16.35 101.9 Note 1 PassA04 18.05-18.9 99.6 Note 1 PassB05 0.25-0.9 101.2 Note 1 PassB05 0.9-1.9 99.8 Note 1 PassB05 1.9-2.9 101.7 Note 1 PassB05 7.9-8.9 98.6 Note 1 PassB05 15.9-16.1 N/A* N/A* N/A*B07 14.9-15.9 99.4 Note 1 PassB08 18.0-18.9 100.1 Note 1 PassB09 0.1-0.9 100.9 Note 1 PassB09 0.9-1.9 99.2 Note 1 PassB09 14.9-15.9 99.2 Note 1 PassB09 18.0-18.9 97.8 Note 1 PassB10 0.05-0.9 99.6 Note 1 Pass


B10 13.9-14.7 97.9 Note 1 PassHKLRSampling for A1 0.55-1.00 94.9 Note 1 Pass


D1-25




Reference Site(%)


Reference

Result

A1 1.0–2.0A1 2.0–3.0A2 0.47–1.00A2 2.0–3.0A2 8.0–9.0

88.7 Note 1 Pass

A3 5.0–6.0 90.0 Note 1 PassA4 0.14–1.00A4 8.0-9.0A4 14.0–15.0

97.6 Note 1 Pass

A5 8.0–9.0A5 14.0-15.0

100.7 Note 1 Pass

B8 0.25–1.00 101.2 Note 1 PassB9 0.9–1.0B9 5.0-6.0B9 7.0-8.0

96.3 Note 1 Pass

B14 0.25-1.00B14 5.0-6.0

121.0 Note 1 Pass

B15 0.45-1.00B15 1.0-2.0B15 8.0-9.0

98.3 Note 1 Pass

G13 Surface 88.7 Note 1 Pass

HKLR viaduct(2004)

G14 Surface 63.9 P=0.0001 FailC11 7.9-8.9 43.7 P <0.05 FailC11 9.9–10.8 42.8 P <0.05 Fail

Sampling forHKLRreclamation(2009) C14 7.9-8.9 110.4 Note 1 PassNote: 1) As the average survival rate of bivalve larve for test sediment was greater than 80% of that of

the reference sediment, statistical analysis was not required2) N/A – Insufficient sample for biological test.

Table D1.17 Ancillary Test ResultsSample Sample

LocationSamplingDepth (m)

InterstitialAmmonia(mgNH3/L)


(ppt)

GrainSize

<63m(%)

MoistureContent*

(%)

TOC(% WetWeight)

TOC(% DryWeight)

HKBCFA01 0.05 - 0.9 1.4 31 99 92 0.39 0.75A01 0.9 – 1.9 0.62 25 98 88 0.41 0.77A01 1.9 – 2.9 11 30 98 89 0.41 0.77A01 7.9-8.9 4.9 20 99 78 0.48 0.85A01 9.9–10.8 6.6 23 94 56 0.60 0.94A02 14.9-15.9 <0.03 25 99 89 0.39 0.75A02 16.9-17.9 N/A* N/A* N/A* N/A* N/A* N/A*A03 12.0-12.9 4.2 25 100 77 0.45 0.80A03 14.9-15.9 3.8 25 99 71 0.53 0.91A03 15.9-16.35 N/A** N/A** 71 29 0.08 0.10

HKBCFreclamation(2008)

A04 18.05-18.9 1.8 20 99 79 0.47 0.84


D1-26


SamplingDepth (m)

InterstitialAmmonia(mgNH3/L)


(ppt)

GrainSize

<63m(%)

MoistureContent*

(%)

TOC(% WetWeight)

TOC(% DryWeight)

B05 0.25-0.9 1.3 35 99 86 0.42 0.78B05 0.9-1.9 3.2 27 99 86 0.42 0.78B05 1.9-2.9 24 30 99 83 0.40 0.73B05 7.9-8.9 <0.03 33 98 85 0.50 0.93B05 15.9-16.1 N/A* N/A* N/A* N/A* N/A* N/A*B07 14.9-15.9 0.38 23 97 64 0.49 0.80B08 18.0-18.9 0.84 20 99 76 0.41 0.72B09 0.1-0.9 0.87 32 99 107 0.42 0.87B09 0.9-1.9 2.0 32 99 98 0.40 0.79B09 14.9-15.9 7.1 25 100 72 0.54 0.93B09 18.0-18.9 6.5 25 101 72 0.52 0.89B10 0.05-0.9 0.92 30 76 73 0.38 0.66B10 13.9-14.7 1.7 25 100 65 0.40 0.66

HKLRA1 0.55-1.00A1 1.0–2.0A1 2.0–3.0

6.1 27 82 58 0.50 0.79

A2 0.47–1.00A2 2.0–3.0A2 8.0–9.0

6.5 25 85 72 0.40 0.69

A3 5.0–6.0 21 25 93 78 0.45 0.80A4 0.14–1.00A4 8.0-9.0A4 14.0–15.0

7.5 26 90 79 0.45 0.81

A5 6.0–9.0A5 14.0-15.0

N/A** 24 98 67 0.30 0.50

B8 0.25–1.00 4.3 26 96 83 0.45 0.82B9 0.9–1.0B9 5.0-6.0B9 7.0-8.0

12 24 42 46 0.25 0.36

B14 0.25-1.00B14 5.0-6.0

6.7 25 92 83 0.40 0.73

B15 0.45-1.00B15 1.0-2.0B15 8.0-9.0

36 23 91 42 0.40 0.57

G13 Surface 1.8 32 95 89 0.45 0.85

Samplingfor HKLRviaduct(2004)

G14 Surface 7.1 28 89 77 0.35 0.62Note: N/A* – Insufficient sample for biological test.

N/A**- Analysis was not performed due to insufficient amount of porewater obtained.

Elutriate Samples

D1-3.14 Elutriate tests were conducted for the purpose of water quality assessment (seeSection 9) of the extent of contaminant release when dredging activities take place.The testing parameters included heavy metals (cadmium, chromium, copper,mercury, nickel, lead, zinc and silver), metalloid (arsenic) and organic micro-pollutants (PCB, PAH and TBT), chlorinated pesticides and nutrients includingNH4-N, PO4-P, and total phosphorus.


D1-27

D1-3.15 The elutriate test results are summarised in Tables D1.18 and D1.19. In general,the levels of PAHs, PCBs and TBT, metals were all below the reporting limits.

Table D1.18 Elutriate Test Results (Metals, Metalloid and PAHs)Metals(mg/kg)

Metalloid(mg/kg)

Organic-PAHs (µg/kg)

Samplelocation

SamplingDepthbelow

seabed (m) Cd Cr Cu Hg Ni Pb Ag Zn As LMWPAH

HMWPAH

A01 0.05 - 0.9 <0.2 <1 1 <0.1 2.1 <1 <1 <4 3.7 <0.20 <0.20A01 0.9 – 1.9 <0.2 <1 <1 <0.1 <1 <1 <1 <4 4.4 <0.20 <0.20A01 2.9 – 3.9 <0.2 <1 1.7 <0.1 2.5 <1 <1 <4 9.9 <0.20 <0.20A01 7.9-8.9 <0.2 <1 <1 <0.1 1.1 <1 <1 <4 2.3 <0.20 <0.20A01 9.9–10.8 0.37 <1 <1 <0.1 6.5 <1 <1 8.5 <2 <0.20 <0.20A02 0.2-0.9 <0.2 <1 <1 <0.1 1.1 <1 <1 <4 23 <0.20 <0.20A02 2.9-3.9 <0.2 <1 <1 <0.1 2.2 <1 <1 <4 57 <0.20 <0.20A02 7.9-8.9 <0.2 <1 <1 <0.1 2.0 <1 <1 <4 13 <0.20 <0.20A02 14.9-15.9 <0.2 <1 1.2 <0.1 1.7 <1 <1 5 7.5 <0.20 <0.20A02 16.9-17.9 <0.2 <1 1.3 <0.1 1.9 <1 <1 5 4.3 <0.20 <0.20A03 0.2-0.9 <0.2 <1 <1 <0.1 2 <1 <1 <4 2.9 <0.20 <0.20A03 2.9-3.9 <0.2 <1 <1 <0.1 1.5 <1 <1 <4 28 <0.20 <0.20A03 7.9-8.9 <0.2 <1 <1 <0.1 1.7 <1 <0.1 4.3 6.5 <0.20 <0.20A03 14.9-15.9 <0.2 <1 <1 <0.1 3 <1 <1 <4 3.1 <0.20 <0.20A03 15.9-16.35 0.2 <1 1.3 <0.1 9.1 <1 <1 9.6 2.3 <0.20 <0.20A04 0.0-0.9 <0.2 <1 <1 <0.1 1.2 <1 <1 <4 11 <0.20 <0.20A04 2.9-3.9 <0.2 <1 1.1 <0.1 <1 <1 <1 6.8 4.3 <0.20 <0.20A04 7.9-8.9 <0.2 <1 1.1 <0.1 3.1 <1 <1 <4 9.9 <0.20 <0.20A04 14.9-15.9 <0.2 <1 2.9 <0.1 3.3 <1 <1 <4 5.7 <0.20 <0.20A04 18.05-18.9 <0.2 <1 1.5 <0.1 2.8 <1 <1 4.6 8.9 <0.20 <0.20B05 0.25-0.9 <0.2 <1 <1 <0.1 1.5 1.4 <1 <4 2.3 <0.20 <0.20B05 2.9-3.9 <0.2 <1 1.2 <0.1 2.1 <1 <1 4.3 2.9 <0.20 <0.20B05 7.9-8.9 <0.2 <1 1.3 <0.1 1.4 <1 <1 5.1 6.5 <0.20 <0.20B05 14.9-15.9 <0.2 <1 1.5 <0.1 1.5 2.9 <1 <4 4 <0.20 <0.20B05 15.9-16.1 <0.2 <1 <1 <0.1 1.5 2.1 <1 <4 <2 <0.20 <0.20B06 0.35-0.9 <0.2 <1 1.2 <0.1 4.1 <1 <1 <4 17 <0.20 <0.20B06 2.9-3.9 <0.2 1.1 1.3 <0.1 2.4 1.5 <1 9 18 <0.20 <0.20B06 7.9-8.9 <0.2 <1 <1 <0.1 1.7 <1 <1 <4 3.4 <0.20 <0.20B06 9.9-10.9 <0.2 <1 1.2 <0.1 2.3 <1 <1 14 3.8 <0.20 <0.20B06 10.9-11.35 <0.2 <1 2.2 <0.1 11 1 <1 7.6 <2 <0.20 <0.20B07 0.0-0.9 <0.2 <1 1.1 <0.1 1.5 <1 <1 7.4 4.7 <0.20 <0.20B07 0.9-1.9 0.34 <1 1.6 <0.1 2.3 <1 <1 <4 22 <0.20 <0.20B07 2.9-3.9 0.26 <1 1.1 <0.1 2.8 1 <1 <4 9.3 <0.20 <0.20B07 7.9-8.9 <0.2 <1 1.5 <0.1 2.5 <1 <1 8.9 9.9 <0.20 <0.20B07 14.9-15.9 0.38 <1 1.3 <0.1 2.9 <1 <1 <4 3.2 <0.20 <0.20B08 0.0-0.9 <0.2 <1 <1 <0.1 3.1 <1 <1 <4 24 <0.20 <0.20B08 2.9-3.9 <0.2 <1 <1 <0.1 1.1 <1 <1 <4 5.4 <0.20 <0.20B08 7.9-8.9 <0.2 <1 <1 <0.1 <1 <1 <1 <4 6.8 <0.20 <0.20B08 14.9-15.9 <0.2 <1 1.8 <0.1 3.9 1.9 <1 6.7 11 <0.20 <0.20B08 18.0-18.9 <0.2 <1 <1 <0.1 1.8 <1 <1 <4 5.9 <0.20 <0.20B09 0.1-0.9 <0.2 <1 <1 <0.1 2.2 <1 <1 5.4 3.4 <0.20 <0.20B09 2.9-3.9 <0.2 <1 <1 <0.1 1.1 <1 <1 <4 4.8 <0.20 <0.20B09 7.9-8.9 <0.2 <1 1.1 <0.1 2.7 <1 <1 5.3 13 <0.20 <0.20B09 14.9-15.9 0.24 1 <1 <0.1 3.5 1.9 <1 6 3 <0.20 <0.20B09 18.0-18.9 <0.2 <1 <1 <0.1 2.4 <1 <1 5.7 6.4 <0.20 <0.20


D1-28

Metals(mg/kg)

Metalloid(mg/kg)

Organic-PAHs (µg/kg)

Samplelocation

SamplingDepthbelow

seabed (m) Cd Cr Cu Hg Ni Pb Ag Zn As LMWPAH

HMWPAH

B10 0.05-0.9 <0.2 <1 1.6 <0.1 1.4 <1 <1 6.6 3.6 <0.20 <0.20B10 0.9-1.9 <0.2 <1 1 <0.1 2.1 <1 <1 8.1 19 <0.20 <0.20B10 2.9-3.9 <0.2 <1 1.3 <0.1 2.5 1 <1 4.6 14 <0.20 <0.20B10 7.9-8.9 <0.2 <1 1.4 <0.1 2.7 <1 <1 5.4 10 <0.20 <0.20B10 13.9-14.7 0.22 <1 1.8 <0.1 4 <1 <1 5.5 6.8 <0.20 <0.20

Ref. Sed. / <0.2 <1 <1 <0.1 <1 <1 <1 <4 9.4 <0.20 <0.20

Table D1.19 Elutriate Test Results for Grab Samples (PCBs, TBT,Chlorinated Pesticides and Nutrients)

Organic-non-PAHs(µg/L)

Organo-metallics

(µg/L)

SampleLocation Samplin

g Depthbelow

seabed(m) Total

PCBs TBT

ChlorinatedPesticides

(µg/L)TKN

(mg/L)NH4-N(mg/L)

NO3-N(mg/L)

NO2-N(mg/L)

Total P(mg/L)

Ortho-P(mg/L)

A01 0.05 - 0.9 <0.01 <0.015 <0.10 1.9 1.6 0.15 0.21 0.12 <0.10A01 0.9 – 1.9 <0.01 <0.015 <0.10 4.0 4.0 0.19 0.11 0.12 <0.10A01 2.9 – 3.9 <0.01 <0.015 <0.10 4.0 3.2 0.15 0.13 0.17 <0.10A01 7.9-8.9 <0.01 <0.015 <0.10 1.6 1.3 0.25 0.14 <0.10 <0.10A01 9.9–10.8 <0.01 <0.015 <0.10 1.6 1.2 0.25 0.14 <0.10 <0.10A02 0.2-0.9 <0.01 <0.015 <0.10 <1.0 0.32 0.39 0.30 0.21 <0.10A02 2.9-3.9 <0.01 <0.015 <0.10 2.7 2.0 0.31 0.37 0.26 0.16A02 7.9-8.9 <0.01 <0.015 <0.10 4.3 3.8 0.59 0.29 0.15 <0.10A02 14.9-15.9 <0.01 <0.015 <0.10 9.6 9.2 0.41 0.25 <0.10 <0.10A02 16.9-17.9 <0.01 <0.015 <0.10 7.0 6.1 0.55 0.28 <0.10 <0.10A03 0.2-0.9 <0.01 <0.015 <0.10 1.1 0.43 0.25 0.18 <0.10 <0.10A03 2.9-3.9 <0.01 <0.015 <0.10 3.9 3.0 0.23 0.14 0.18 <0.10A03 7.9-8.9 <0.01 <0.015 <0.10 6.0 5.1 0.34 0.17 0.13 <0.10A03 14.9-15.9 <0.01 <0.015 <0.10 6.9 6.0 0.33 0.18 <0.10 <0.10

A0315.9-16.35 <0.01 <0.015 <0.10

5.15.0

0.40 0.17<0.10 <0.10

A04 0.0-0.9 <0.01 <0.015 <0.10 <1.0 <0.025 0.33 0.11 0.10 <0.10A04 2.9-3.9 <0.01 <0.015 <0.10 1.8 1.0 0.35 0.099 <0.10 <0.10A04 7.9-8.9 <0.01 <0.015 <0.10 5.4 4.7 0.33 0.099 0.23 0.13A04 14.9-15.9 <0.01 <0.015 <0.10 12 12 0.35 0.094 0.11 <0.10

A0418.05-18.9 <0.01 <0.015 <0.10

1211

0.32 0.0940.15 <0.10

B05 0.25-0.9 <0.01 <0.015 <0.10 3.2 2.7 0.24 0.14 <0.10 <0.10B05 2.9-3.9 <0.01 <0.015 <0.10 5.0 4.8 0.30 0.17 0.15 0.10B05 7.9-8.9 <0.01 <0.015 <0.10 2.9 2.4 0.34 0.16 <0.10 <0.10B05 14.9-15.9 <0.01 <0.015 <0.10 2.2 1.3 0.19 0.50 0.11 <0.10B05 15.9-16.1 <0.01 <0.015 <0.10 2.2 2.0 0.28 0.22 <0.10 <0.10B06 0.35-0.9 <0.01 <0.015 <0.10 1.9 1.1 0.53 0.092 <0.10 <0.10B06 2.9-3.9 <0.01 <0.015 <0.10 4.6 4.2 0.50 0.09 0.31 0.20B06 7.9-8.9 <0.01 <0.015 <0.10 4.9 4.4 0.69 0.087 <0.10 <0.10B06 9.9-10.9 <0.01 <0.015 <0.10 6.1 5.4 0.64 0.081 <0.10 <0.10

B0610.9-11.35 <0.01 <0.015 <0.10

1.91.7

0.82 0.063<0.10 <0.10

B07 0.0-0.9 <0.01 <0.015 <0.10 <1.0 <0.025 0.29 0.045 0.13 <0.10


D1-29

Organic-non-PAHs(µg/L)

Organo-metallics

(µg/L)

SampleLocation Samplin

g Depthbelow

seabed(m) Total

PCBs TBT


(µg/L)TKN

(mg/L)NH4-N(mg/L)

NO3-N(mg/L)

NO2-N(mg/L)

Total P(mg/L)

Ortho-P(mg/L)

B07 0.9-1.9 <0.01 <0.015 <0.10 1.0 0.39 0.28 0.091 <0.10 <0.10B07 2.9-3.9 <0.01 <0.015 <0.10 1.6 1.3 0.28 0.046 <0.10 <0.10B07 7.9-8.9 <0.01 <0.015 <0.10 4.0 3.8 0.28 0.058 0.14 <0.10B07 14.9-15.9 <0.01 <0.015 <0.10 6.4 6.2 0.27 0.044 <0.10 <0.10B08 0.0-0.9 <0.01 <0.015 <0.10 <1.0 0.20 0.35 0.14 <0.10 <0.10B08 2.9-3.9 <0.01 <0.015 <0.10 1.9 1.7 0.33 0.13 0.10 <0.10B08 7.9-8.9 <0.01 <0.015 <0.10 4.9 4.8 0.34 0.12 0.26 0.12B08 14.9-15.9 <0.01 <0.015 <0.10 12 12 0.31 0.14 0.21 <0.10B08 18.0-18.9 <0.01 <0.015 <0.10 11 10 0.35 0.13 0.11 <0.10B09 0.1-0.9 <0.01 <0.015 <0.10 <1.0 0.060 0.50 0.33 0.14 <0.10B09 2.9-3.9 <0.01 <0.015 <0.10 <1.0 0.16 0.58 0.42 0.12 <0.10B09 7.9-8.9 <0.01 <0.015 <0.10 7.9 7.0 0.57 0.27 0.29 0.44B09 14.9-15.9 <0.01 <0.015 <0.10 14 13 0.40 0.32 <0.10 <0.10B09 18.0-18.9 <0.01 <0.015 <0.10 14 13 0.41 0.33 0.10 <0.10B10 0.05-0.9 <0.01 N/A* <0.10 <1.0 0.059 0.29 0.048 <0.10 <0.10B10 0.9-1.9 <0.01 <0.015 <0.10 <1.0 0.33 0.26 0.084 <0.10 <0.10B10 2.9-3.9 <0.01 <0.015 <0.10 1.4 0.85 0.27 0.084 <0.10 <0.10B10 7.9-8.9 <0.01 <0.015 <0.10 3.9 3.8 0.26 0.064 0.11 <0.10B10 13.9-14.7 <0.01 <0.015 <0.10 5.5 5.3 0.28 0.062 <0.10 <0.10

Ref. Sed. / <0.01 <0.015 <0.10 1.1 0.87 <0.025 <0.025 <0.10 <0.10Note: N/A*-Insufficient porewaterr for analysis of TBT.

Pore Water Samples

D1-3.16 Pore water tests were conducted also for the purpose of water quality assessment(see Section 9) of the potential of contaminant release when dredging and fillingactivities take place. The testing parameters included heavy metals (cadmium,chromium, copper, mercury, nickel, lead, zinc and silver), metalloid (arsenic) andorganic micro-pollutants (PCB, PAH and TBT), chlorinated pesticides andnutrients including NH4-N, PO4-P, and total phosphorus.

D1-3.17 The pore water test results of this investigation are summarised in Tables D1.20and D1.21. In general, the levels of PAHs, PCBs and TBT were all below thereporting limits.

Table D1.20 Pore Water Test Results (Metals, Metalloid and PAHs)Metals(mg/kg)

Metalloid(mg/kg) Organic-PAHs (µg/kg)Sample

LocationCd Cr Cu Hg Ni Pb Ag Zn As LMW PAH HMW PAH

A01 <0.2 <1 1.7 <0.1 1.2 1.9 <1 <4 4 <0.20 <0.20A02 <0.2 <1 <1 <0.1 2.7 <1 <1 <4 8.7 <0.20 <0.20A03 <0.2 <1 3.6 <0.1 2.1 1.5 <1 7.7 3.4 <0.20 <0.20A04 <0.2 <1 <1 <0.1 1.2 <1 <1 <4 4.4 <0.20 <0.20B05 <0.2 <1 <1 <0.1 <1 <1 <1 4.2 9 <0.20 <0.20B06 <0.2 <1 1.2 <0.1 <1 <1 <1 <4 7.5 <0.20 <0.20B07 <0.2 <1 2.4 <0.1 2.4 <1 <1 4.4 3.1 <0.20 <0.20B08 <0.2 <1 <1 <0.1 <1 <1 <1 <4 4 <0.20 <0.20


D1-30

Metals(mg/kg)

Metalloid(mg/kg) Organic-PAHs (µg/kg)Sample

LocationCd Cr Cu Hg Ni Pb Ag Zn As LMW PAH HMW PAH

B09 <0.2 1.2 3.1 <0.1 1.8 3.6 <1 10 6.1 <0.20 <0.20B10 <0.2 <1 1.7 <0.1 1.7 <1 <1 4.2 3.3 <0.20 1.8

Ref. Sample. <0.2 <1 <1 <0.1 1.5 <1 <1 <4 11 <0.20 <0.20


D1-31

Table D1.21 Pore Water Test Results (PCBs, TBT, Chlorinated Pesticidesand Nutrients)

Organic-non-PAHs

(µg/L)

Organo-metallics

(µg/L)Sample

LocationTotalPCBs TBT


(µg/L)

TKN(mg/L)

NH4-N(mg/L)

NO3-N(mg/L)

NO2-N(mg/L)

Total P(mg/L)

Ortho-P(mg/L)

A01 <0.01 <0.015 <0.10 1.4 0.80 0.095 0.093 0.17 <0.10A02 <0.01 <0.015 <0.10 3.3 3.30 N/A <0.025 0.22 0.18A03 <0.01 <0.015 <0.10 1.3 0.40 0.26 0.10 0.12 <0.10A04 <0.01 <0.015 <0.10 <1.0 0.23 0.054 0.043 0.19 <0.10B05 <0.01 <0.015 <0.10 2.8 2.50 <0.025 0.062 0.14 <0.10B06 <0.01 <0.015 <0.10 2.8 2.50 <0.025 <0.025 0.25 0.13B07 <0.01 <0.015 <0.10 <1.0 0.052 0.033 0.059 0.22 <0.10B08 <0.01 <0.015 <0.10 1.4 1.00 <0.025 0.032 0.17 <0.10B09 <0.01 <0.015 <0.10 1.8 1.60 <0.025 <0.025 0.49 0.32B10 <0.01 <0.015 <0.10 <1.0 0.62 <0.025 <0.025 0.17 <0.10

Ref. Sed. <0.01 <0.015 <0.10 4.0 3.7 <0.025 <0.025 0.73 0.68

For TM-CLKL Investigation (EIA)

LEGENDS

AN01

AN01

AN03

AN02

AS01

AS02

LS01 LS02

LS03LS04

LS05

Lantau Island

Hong KongInternational

Airport

New Territories

PROPOSED LANTAULOGISTICS PARK

TUNG CHUNG EASTFUTURE DEVELOPMENT

HZMBHKBCF

TUEN MUN CHEKLAP KOK LINK

TUEN MUNWESTERN BYPASS

SHA CHAU

HZMBHONG KONG LNK ROAD

HZMBMAIN SECTION

HKSA

R B

OU

NDAR

Y

SIU MO TO

TAI MO TOTHE BROTHERS

Sediment Sampling Locations for TM-CLKL (Indicative) Appendix D1.1

AGREEMENT NO. CE 52 / 2007 (HY)TUEN MUN - CHEK LAP KOK LINK - INVESTIGATION

NTS Jun 2009

BCF/VC-B06

BCF/VC-A04BCF/VC-B10

BCF/VC-B08

BCF/VC-B07

BCF/VC-B05

BCF/VC-A01

BCF/VC-A02

BCF/VC-B09

BCF/VC-A03

BCF/VC-C13

BCF/VC-C15

BCF/VC-C16

HKBCFReclamation

Reclamation underTMCLKL Project

LegendExisting Vibrocores for HKBCF

Existing Vibrocores for HKLR

N

BCF/VC-C11

BCF/VC-C12

BCF/VC-C14

Sediment Sampling Locations for HKBCF (Indicative) Appendix D1.2


NTS Jun 2009

G13 G14

G7

Existing Vibrocores Location

Legend

Existing Grab Samples Locations

A1 A2A3

A4

A5B14

B15B8

B9

B16B17

G13 G14

HKBCF

Sediment Sampling Locations for HKLR (Indicative) Appendix D1.3


NTS Jun 2009

APPENDIX D1 SEDIMENT TESTING RESULTS

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Transcript of APPENDIX D1 SEDIMENT TESTING RESULTS