Contamination Assessment Report and Remediation Action ... · December 09 Page 3-1 K:\EB000305...

Appendix 8.2

Contamination Assessment Report and Remediation Action Plan (CAR/RAP)

Agreement No. CE 58/2006 (HY)

Central Kowloon Route and Widening of Gascoigne Road Flyover

Investigation

Environmental Impact Assessment Report for CKR (



Environmental Impact Assessment Report for CKR (


Environmental Impact Assessment Report for CKR (FinalFinal)

Contamination Assessment Report (CAR) and

Remediation Action Plan (RAP)

Mott Macdonald– Meinhardt – Hyder Joint Venture

Appendix 9



Hyder Joint Venture

Appendix 9-2




Central Kowloon Route & Widening of Gascoigne Road Flyover - Investigation

Central Kowloon Route - CAR/ RAP for CKR

December 09 Page i K:\EB000305 Central Kowloon Route\Report\EIA (CKR)\Final\Rev 0\Appendices\Appendix 9-2 CAR & RAP\CAR & RAP Rev 1.doc

CONTENTS

1 INTRODUCTION .................................................................................................. 1-1

1.1 Background ................................................................................................. 1-1

1.2 Purposes of this CAR/ RAP ....................................................................... 1-1

2 CONTAMINATION ASSESSMENT ................................................................... 2-1

2.1 Site Investigation Methodology ................................................................. 2-1

2.2 Assessment Criteria .................................................................................... 2-1

2.3 Results and Interpretation ........................................................................... 2-2

3 REMEDIATION ACTION PLAN ........................................................................ 3-1

3.1 Extent of Land Contamination and Remediation Options ......................... 3-1

3.2 Requirements for Confirmatory Investigation ............................................ 3-2

4 CONCLUSION & RECOMMENDATIONS ....................................................... 4-1

List of Annex

Annex 2-1 Revised Sampling and Testing Schedule to suit Site Constraints

Annex 2-2 Relevant Site Borehole Log

Annex 2-3 RBRGs for Soil and Groundwater

Annex 2-4 Laboratory Analysis Results

Annex 2-5 Standard Forms – Soil/ Groundwater Results Summary and

Comparison to RBRGs and Csat/ Solubility Limit

Annex 3-1 Confirmatory Sampling and Testing Schedule

List of Figures

Figure 1-1 The Proposed Central Kowloon Route (CKR)

Figure 1-2 Longitudinal Profile of the CKR

Figure 1-3 Layout/ Vertical Profile of CKR (West End)

Figure 1-4 Layout/ Vertical Profile of CKR (East End)

Figure 2-1 As-sampled Locations (West End)

Figure 2-2 As-sampled Locations (East End)

Figure 3-1 Areas of Concern for Confirmatory Investigation at West End

Figure 3-2 Stockpiling Areas in the West End

Figure 3-3 Areas of Concern for Confirmatory Investigation at East End

Figure 3-4 Stockpiling Areas in the East End




December 09 Page 1-1 K:\EB000305 Central Kowloon Route\Report\EIA (CKR)\Final\Rev 0\Appendices\Appendix 9-2 CAR & RAP\CAR & RAP Rev 1.doc

1 INTRODUCTION

1.1 Background

1.1.1 The proposed Central Kowloon Route (“CKR”) under study (hereinafter known as the “Project”) will be a dual-3 lane tunnel connecting the West Kowloon Highway at

Yau Ma Tei Interchange to the existing road network at Kowloon Bay as well as the

future Trunk Road T2 at Kai Tak Development and Tseung Kwan O – Lam Tin

Tunnel, forming a strategic highway link to serve the existing and planned

developments in West Kowloon, East Kowloon and Tseung Kwan O.

1.1.2 Figure 1-1 shows this Project alignment across Kowloon with both portals on either side. The concerned longitudinal and vertical profiles are also shown in Figure 1-2

to Figure 1-4.

1.1.3 The Contamination Assessment Plan (CAP) submitted on 8 Sep 2008 pertaining to the requirements in Clause 3.4.10.4 of the EIA Study Brief was endorsed by EPD on

23 Sep 2008 and documented in Appendix 9-1 of the EIA Report.

1.1.4 The sampling locations and testing schedule proposed in the approved CAP was then taken forward and specified in a tender, which was subsequently won by Gold

Ram Engineering & Development Ltd. to carry out the ground investigation (“GI”)

beginning on 6 Nov 2008 under Contract No. HY/2008/14 – “Central Kowloon

Route and Widening of Gascoigne Road Flyover (Investigation) – Ground

Investigation”.

1.1.5 The GI comprises digging of inspection pit, rotary drilling of boreholes, logging of the geological information, soil and groundwater sampling for analysis of potential

contamination.

1.1.6 The samples collected was analysed by Lams Laboratories Ltd. and then by ALS when they took over the remaining responsibilities in 30 April 2009.

1.2 Purposes of this CAR/ RAP

1.2.1 According to Section 3.1 of Annex 19 of the EIAO-TM, a contamination assessment has to be conducted based on the endorsed CAP given in Appendix 9-1 of the EIA

Report. This Contamination Assessment Report (“CAR”) has been prepared to

document the findings of the investigation and to interpret the results according to

the “Guidance Note for Contaminated Land Assessment and Remediation” (GN

Land Con) Aug 2007.

1.2.2 As there are positive signs of land contamination identified in some specific areas, a Remediation Action Plan (“RAP”) is also provided in Section 3 to outline the

actions recommended to clean up the Project site.

1.2.3 This combined CAR/ RAP therefore forms part of the EIA to be reviewed by the Director of Environmental Protection to determine on acceptability of the land

contamination impact after remediation.





2 CONTAMINATION ASSESSMENT

2.1 Site Investigation Methodology

Soil Sampling

2.1.1 Soil sampling and collection was conducted in accordance with the Section 4.4 and 4.5 of the endorsed CAP given in Appendix 9-1 of the EIA Report. In carrying out

the GI, the Contractor has identified some site constraints mainly due to presence of

utilities and accessibility, and has then revised the sampling locations originally

given in Section 4.2 of the CAP with agreement from the Consultant.

2.1.2 Revised locations are largely close to the original ones and are shown in Figure 2-1 and Figure 2-2. A revised sampling and testing schedule is given in Annex 2-1.

Groundwater Sampling

2.1.3 Groundwater was sampled in a number of boreholes including PBH1, PBH2, PBH3, PBH4, PBH6, PBH7 and PBH8 to understand if there is any sign of contamination

or accumulation of free products, where applicable in accordance with the

methodology given in the endorsed CAP.

Chemicals of Concern (COC)

2.1.4 The suite of analysis was based on the COC identified for each of the intended samples given in the endorsed CAP. This is reproduced in the revised sampling and

testing schedule as given in Annex 2-1.

Borehole Logging

2.1.5 Strata logging for boreholes was done as part of the GI to document the general stratigrahic description, depth of different geological layers, level of groundwater (if

encountered) etc. This information is useful to understand the geological nature of

the strata, which may have bearing on the likelihood of contamination and

penetration. Representative borehole logs are given in Annex 2-2.

2.2 Assessment Criteria

Criteria for Soil & Groundwater Contamination

2.2.1 The criteria were based on the Risk-based Remediation Goals (“RBRGs”) as given in Table 2.1 and 2.2 of the “Guidance Manual for Use of Risk-based Remediation

Goals for Contamination Land Management” (“GM”), reproduced and appended in

Annex 2-3 for reference.

2.2.2 According to the above-mentioned Manual, there are different sets of RBRGs for 4 different categories of land uses, viz. Urban Residential, Rural Residential,

Industrial and Public Parks.





2.2.3 For this project in particular, the “Public Parks” is more representative as the after-use above the cut-and-cover tunnel alignment requiring excavation of soils and back

filling will be either intended for public open spaces or roads in the west end or

public transport terminus (PTT) in the east.

2.2.4 However, the assessment for land contamination has covered all 4 categories of land use in case the excavated contaminated soil, if any, was used as public fill for

unidentified after-uses. Feasible in-situ remediation/ treatment to treat the aforesaid

contaminated soil will be proposed and included in the supplementary

Contamination Assessment Report (CAR) and Remediation Action Plan (RAP) as

referred in Section 3.2. It should be noted that off-site disposal of surplus soil should

only be considered as a last resort/ option. All surplus soil generated from this

project should be reused on-site as far as practicable.

2.3 Results and Interpretation

Laboratory Analytical Results

2.3.1 A summary of the laboratory analytical results is given in Annex 2-4. A point-by-point approach has been used to pinpoint the results at different sample locations/

depths using standard forms similar to those recommended in the GM in Annex 2-5.

2.3.2 In general, except for the location PBH4 where the reporting limits for some VOCs are higher than the RBRGs for “Urban Residential” and “Rural Residential”, thereby

unable to resolve signs of contamination, other holes or PBH4 based on expected

use of “Public Parks” are unaffected by the reporting limits.

2.3.3 It can be found from a review of the results that locations with identified soil contamination include the following:

• PBH4 at 3.00-3.95m bgl with PCB at 0.5 mg/kg exceeding the RBRGs for “Urban Residential” and “Rural Residential” but not “Industrial” nor

“Public Park”;

• PBH5 at 7.00-7.95m bgl with lead at 570 mg/kg exceeding the RBRGs for “Urban Residential” and “Rural Residential” but not “Industrial” nor

“Public Park”;

• PBH7 at 7.00-7.95m bgl with lead at 490 mg/kg exceeding the RBRGs for “Urban Residential” and “Rural Residential” but not “Industrial” nor

“Public Park”.

2.3.4 No exceedance of the soil saturation limit (“Csat”) was recorded nor there was any sign of observable organic non-aqueous phase liquid (“NAPL”) that present in a

distinct phase. Presence of any free products is therefore unlikely.

2.3.5 For groundwater contamination, there is no exceedance of the RBRGs for all 3 categories of uses. There are however occasions where the reporting limits are

greater than the “solubility limits” for petroleum carbon range C9-C35 quoted in the

GM. These solubility limits are actually representative of the aromatic counterparts

instead of the aliphatic chain.





2.3.6 Actually, solubility limit of aliphatic C9-C35 are considered effectively zero. Moreover at PBH6, the solubility limits for benzo(b)fluoranthene and chrysene are

far too low when compared to the method reporting limit and are therefore

undetermined.

2.3.7 Except for the above observations, there is no confirmed exceedance of the solubility limits and hence presence of NAPL is unlikely.





3 REMEDIATION ACTION PLAN

3.1 Extent of Land Contamination and Remediation Options

3.1.1 From the interpretations given in Section 2.3.3, soil contamination has been identified at PBH4, PBH5 and PBH7 where the later 2 holes are associated with

moderate and localized lead contamination in the fill materials at 7.00-7.95m bgl,

which obviously does not correlate with previous uses at grade.

Soil Contamination at PBH4

3.1.2 At PBH4 at 3.00-3.95m bgl, soil was found contaminated with PCB at 0.5 mg/kg exceeding the RBRGs for “Urban Residential” and “Rural Residential” but not

“Industrial” nor “Public Park” (closest use for road/ open space). As soils will be

excavated in constructing the cut-and-cover tunnel, some surplus materials will be

generated.

3.1.3 Given that the detected concentration has exceeded the RBRGs for “Urban Residential” and “Rural Residential”, it would need to ensure that all excavated

contaminated materials within the area indicated in Figure 3-1 are not to be reused

elsewhere. It should be stockpiled (see Figure 3-2) for re-use in backfilling the same

work site within the West End.

3.1.4 To avoid nuisances such as fugitive dust, noise of stockpiling and surface runoff, suitable mitigation measures such as frequent wetting, provision of bunds to control

runoff and sedimentation tank for silt removal shall be in place. Operations of the

stockpiling areas are to be limited to the daytime period outside the restricted hours

requiring application for CNP.

3.1.5 Because of accessibility problem, the extent of contamination would need to be confirmed using the approach given in Section 3.2 once the Main Contractor for

CKR has taken possession of the site.

3.1.6 It is envisaged that the contamination problem would be moderate, localized and is hence surmountable. Re-use in-situ is likely to be the most practicable remediation

method. If disposal of surplus contaminated materials is found to be necessary,

feasible in-situ remediation/ treatment to treat the aforesaid contaminated soil shall

be provided and included in the supplementary CAR/ RAP as referred in Section.3.2.


3.1.7 At PBH5 where it is situated in front of the Dickson Building, it does not fall within the works area for the CKR and hence will not be excavated. It was moved off-site

due to site constraints identified at time of the GI. It may however suggest

contamination in the fill materials used in the past that can be dated back to year

1867 – 1924. (Figure 3.7 of the CAP refers)

3.1.8 From information gathered at this stage, soil was found contaminated with Lead at 570 mg/kg exceeding the RBRGs for “Urban Residential” and “Rural Residential”

but not “Industrial” nor “Public Park” (closest use for road/ open space).





3.1.9 Given the accessibility problem, the extent of contamination would need to be confirmed using the approach given in Section 3.2 once the Main Contractor for

CKR has taken possession of the site.

3.1.10 Similar to the situation for PBH4, all excavated contaminated materials within the area indicated in Figure 3-1 should not be reused elsewhere. It should be stockpiled

(see Figure 3-2) for re-use in backfilling the same work site within the West End.





3.1.12 It is envisaged that the contamination problem would be moderate, localized and is hence surmountable. Re-use in-situ is likely to be the most practicable remediation

method. If disposal of surplus contaminated materials is found to be necessary,

feasible in-situ remediation/ treatment to treat the aforesaid contaminated soil shall

be provided and included in the supplementary CAR/ RAP as referred in Section.3.2.


3.1.13 At PBH7 at 7.00-7.95m bgl, soil was found contaminated with lead at 490 mg/kg exceeding the RBRGs for “Urban Residential” and “Rural Residential” but not

“Industrial” nor “Public Park (closest use for public transport terminus).

3.1.14 This may suggest contamination in the fill materials used in the past that can be dated back to year 1924 – 1964. (Figure 3.7 of the CAP refers)

3.1.15 Because of accessibility problem, a confirmation of the extent of contamination would be required using the approach given in Section 3.2 once the Main Contractor

for CKR has taken possession of the site.

3.1.16 Similar to the situation for PBH5, all excavated contaminated materials within the area indicated in Figure 3-2 should not be reused elsewhere. It should be stockpiled

(see Figure 3-4) for re-use in backfilling the same work site within the East End.





3.1.18 If disposal of surplus contaminated materials is found to be necessary, feasible in-situ remediation/ treatment to treat the aforesaid contaminated soil shall be provided

and included in the supplementary CAR/ RAP as referred in Section.3.2. The

contamination problem is considered surmountable.

3.2 Requirements for Confirmatory Investigation

3.2.1 In view of the above analysis, it is considered prudent to confirm the extent of contamination in the fill before excavation works begin.





3.2.2 The confirmatory investigation will be similar to that in the endorsed CAP but would be more focus in the identified contaminants, viz. PCB and heavy metals (esp.

lead).

3.2.3 In the West End, a total of 5 more boreholes are suggested, including one immediately next to (within 10m) PBH4 to check the affected radius and 4 others to

be at equal distance (approx. 50m) between PBH4 and the Yau Ma Tei Carpark

Building. (See Figure 3-1)

3.2.4 At Ma Tau Kok, a total of 2 more boreholes are suggested, including one immediately next to (within 10m) PBH7 to check the affected radius and one other

at the midpoint between PBH7 and PBH8. (See Figure 3-2)

3.2.5 The depth of penetration required should be up to the bottom of the future CKR cut-and-cover tunnel.

3.2.6 A Confirmatory Sampling and Testing Plan is appended in Annex 3-1.

3.2.7 Should the future confirmatory investigation identify more locations/ strata with soil contamination, the investigation should be narrowed down to focus on 4 more

locations within a radius of 10m from the hole identified with contamination to

define the extent.

3.2.8 Results of the confirmatory investigation and feasible in-situ remediation/ treatment to treat the excavated contaminated soil should be proposed and presented in a

supplementary CAR and RAP for approval by EPD to define the appropriate

remediation works necessary for the Project before the construction works

commence.

3.2.9 In any case, if surplus contaminated soils are to be re-used elsewhere other than the same work site, the soil must be treated to the Universal Treatment Standards (UTS)

recommended by the USEPA.

3.2.10 Off-site disposal of surplus soil should only be considered as a last resort/ option. All surplus soil generated from this project should be reused on-site as far as

practicable

3.2.11 If the landfill disposal is considered as a last resort/ option, the surplus contaminated soil shall meet certain criteria before disposal to landfill is allowed. The criteria are

set primarily in terms of Toxicity Characteristic Leaching Procedure (TCLP) limits,

which are stipulated in Table E1 of the EPD's "Guidance Notes for Investigation and

Remediation of Contaminated Sites of Petrol Filling Stations, Boatyards, Car

Repair/ Dismantling Workshops".

3.2.12 A Remediation Report (RR) should be prepared and submitted to EPD to demonstrate that the decontamination work is adequate and is carried out in

accordance with the endorsed CAR and RAP. Information such as soil treatment/

disposal records (including trip tickets), confirmatory sampling results, photographs

and, if applicable, certification of independent checker should be included in the

aforesaid RR. No construction works shall be commenced prior to the endorsement

of the aforesaid RR.





4 CONCLUSION & RECOMMENDATIONS

4.1.1 This section has included an assessment of the land contamination impact arising from works of the CKR especially at sites coincide with the cut-and-cover tunnel

alignments at both ends. The middle section of the CKR tunnel is entirely created in

rock by drill & blast method and will not involve excavations through the ground

surface and hence is not going to be affected by any contaminated soil.

4.1.2 Locations with soil contamination has been identified at 3 spots – 2 at Yau Ma Tei and 1 at Ma Tau Kok with signs of PCB and lead exceeding the RBRGs for “Urban

Residential” and “Rural Residential” but not “Industrial” nor “Public Park”.

4.1.3 It is believed that soil contamination is attributed to contaminated fill materials used in reclamation in the past at both ends of the Project.

4.1.4 Since the contamination does not exceed a level represented by RBRGs for “Public Park” – the closest after-use for CKR upon completion, re-use on-site for backfilling

is the most appropriate remediation measures.

4.1.5 The data obtained at the EIA stage are however insufficient to delineate the extent of land contamination due to accessibility constraints and hence a confirmatory

investigation is required before commencement of the construction works.

4.1.6 Once the confirmatory investigation is completed, a full picture of soil contamination will then be available to define the scope of remediation works in a

supplementary CAR/ RAP to be submitted afterwards.

4.1.7 In the meantime, a contamination profile has been adequately established and reveals moderate, localized contamination, which the problem is believed to be

surmountable with mitigation.

4.1.8 It is believed that the same profile will result in the latter confirmatory investigation and similar remediation method – reuse in-situ, could apply.

4.1.9 As a general principle, off-site disposal of surplus soil should be avoided as far as possible unless considered as a last resort/ option. All surplus soil generated from

this project should be reused on-site as far as practicable

4.1.10 In conclusion, the land contamination impact is envisaged to be surmountable with suitable remediation measures, which should included in the supplementary CAR/

RAP as referred to in Section 3.2.

Figures

Annex 2-1 Revised Sampling and

Testing Schedule to suit Site Constraints


Central Kowloon Route and Widening of Gascoigne Road Flyover - Investigation

Central Kowloon Route - Environmental Impact Assessment Report (Final)

MMHJV

Easting Northing Petroleum Carbon Ranges VOCs SVOCs Metals PCB

PBH0 834770.25 819145.91 Soil 0.5m 0 0 0 1 0

Soil 1.5m 0 0 0 1 0

Footprint of Ventilation

Building at the West End

Soil 2.45m 0 0 0 1 0

PBH0A 834769.87 819146.97 Soil 3m 0 0 0 1 0

Soil 6m 0 0 0 1 0

Soil 7m 0 0 0 1 0

Soil 9m 0 0 0 1 0

Soil 11m 0 0 0 1 0

PBH1 835112.33 819073.76 Soil 0.5m 1 1 0 1 0

(Coincide with MBH20) Soil 1.5m 1 1 0 1 0

Soil 3m 1 1 0 1 0

Soil 5m 0 0 0 1 0

Groundwater 5m 1 1 0 0 0

Soil 5.5m 0 0 0 1 0

Soil 9m 0 0 0 1 0

Soil 11m 0 0 0 1 0

Soil 12m 0 0 0 1 0

Soil 14m 0 0 0 1 0

Soil 15m 0 0 0 1 0

Soil 16m 0 0 0 1 0

Soil 17m 0 0 0 1 0

Soil 18m 0 0 0 1 0

Soil 19m 0 0 0 1 0

Soil 20m 0 0 0 1 0

PBH2 835239.26 818984.58 Soil 0.5m 1 1 0 1 0


Soil 3m 1 1 0 1 0

Soil 5m 0 0 0 1 0


Soil 5.5m 0 0 0 1 0

Soil 7m 0 0 0 1 0

Soil 7.5m 0 0 0 1 0

Soil 9m 0 0 0 1 0

Soil 9.5m 0 0 0 1 0

PBH3 835276.57 818947.07 Soil 0.5m 1 1 0 1 0


Soil 2.5m 1 1 0 1 0

Soil 5m 0 0 0 1 0


Soil 6m 0 0 0 1 0

Soil 7m 0 0 0 1 0

Soil 12.1m 0 0 0 1 0

Soil 12.6m 0 0 0 1 0

Soil 14.1m 0 0 0 1 0

Soil 14.6m 0 0 0 1 0

Soil 16.1m 0 0 0 1 0

Soil 16.6m 0 0 0 1 0

Reasons for SamplingProposed Sampling

Location

Nature of Land Use Sampling MeansApprox. coordinates

then by Borehole to

11m

Sample Type Depth of

sample (bgl)


Within cut-and-cover section

of CKR tunnel

then by Borehole to

9.5m

Past: YMT typhoon shelter

Current: Construction site

Future: CKR tunnel below &

landscaped open space above

First by trial pit up to

2.5m bgl

Within cut & cover section of

CKR tunnel

then by Borehole to

16.6m

Past: YMT typhoon shelter;

Current: Construction site;

Future: CKR tunnel below &

landscaped open space above


3m bgl

General indication of contamination

caused by any leaked fuel due to car

park operation and in the fill materials

used in the past that will be disturbed

by tunnelling


caused by any leaked fuel and in the fill

materials used in reclamation in the

past that will be disturbed by tunnelling

then by Borehole to

20m


3m bgl

Within cut-and-cover section

of CKR tunnel


2.45m bgl

Footprint of Ventilation

Building at the West End

General indication of any

contamination in the fill materials used

in reclamation in the past that will be

disturbed by foundation works for the

ventilation building at the west end

Past and current: Landscaped

open space on reclaimed land;

Future intended: Ventilation

Building for CKR

Past: YMT typhoon shelter;

Current: Car park Future: CKR

tunnel below & landscaped open

space above


caused by any leaked fuel and in the fill


past and are disturbed by tunnelling

December 2009

K:\EB000305 Central Kowloon Route\Report\EIA (CKR)\Final\Rev 0\Source Files\Land Contaminaiton for CKR Rev 1

Actual Sampling & Testing Plan

Page 1 of 2


Central Kowloon Route and Widening of Gascoigne Road Flyover - Investigation

Central Kowloon Route - Environmental Impact Assessment Report (Final)

MMHJV

Easting Northing Petroleum Carbon Ranges VOCs SVOCs Metals PCB

Reasons for SamplingProposed Sampling

Location

Nature of Land Use Sampling MeansApprox. coordinates Sample Type Depth of

sample (bgl)


PBH4 835348.70 818941.19 Soil 0.5m 1 1 0 1 1


Soil 3m 1 1 0 1 1


Soil 11.5m 1 1 0 1 1

Soil 13.5m 1 1 0 1 1

Soil 14.5m 1 1 0 1 1

Soil 15.5m 1 1 0 1 1

Soil 17m 1 1 0 1 1

PBH5 835436.03 818864.69 Soil 0.5m 0 0 0 1 0


Soil 3m 0 0 0 1 0

Soil 5m 0 0 0 1 0

Soil 7m 0 0 0 1 0

Soil 9m 0 0 0 1 0

Soil 11m 0 0 0 1 0

PBH6 837892.01 819998.53 Soil 0.5m 1 1 1 1 0

Soil 1.5m 1 1 1 1 0

Soil 2.5m 1 1 1 1 0


PBH7 837924.57 819964.23 Soil 0.5m 1 1 0 1 0

Soil 1.5m 1 1 0 1 0

Soil 3m 1 1 0 1 0

Soil 5m 0 0 0 1 0


Soil 7m 0 0 0 1 0

PBH8 838003.65 819921.91 Soil 0.5m 1 1 0 1 0


Soil 2.5m 1 1 0 1 0

Groundwater 3.5m 1 1 0 0 0

Soil 5m 0 0 0 1 0

Soil 7m 0 0 0 1 0

Soil 9m 0 0 0 1 0

Soil 10m 0 0 0 1 0

Soil 26 26 3 74 8

groundwater 7 5 1 0 0Total

Past: Road/ walkway;

Current: Walkway adjacent to the

Dickson Building

Future: Walkway


1.5m bgl


contamination in the fill materials used


disturbed by tunnelling (location shifted

off-site due to accessibility)then by Borehole to 9m


3.5m bgl

then by Borehole to

10m


contamination caused by leaked fuel

due to public transport terminus

operations and in the fill materials used


disturbed by tunnelling


3m bgl

then by Borehole to 7m


3m bgl

then by Borehole to

17m


CKR tunnel

Within the bored section of

CKR tunnel


CKR tunnel


CKR tunnel

Past, present and future: Public

Transport Terminus

Past, present and future: Public

Transport Terminus


CKR tunnel


contamination caused by leaked fuel

due to public transport terminus

operations and in the fill materials used


disturbed by tunnelling

Past: Road/ walkway;

Present: Areas adjacent to the

Kapok Industrial Building and the

HKCG Depot Future: CKR tunnel

below & walkway above

General indication of any possible

contamination migrated from the HK

China Gas Depot and in the fill


past


3m bgl


contamination caused by PCB from the

CLP substation and in the fill materials

used in reclamation in the past that will

be disturbed by tunnelling

Past and current: Road

Future: CKR tunnel below and

Gascoigne Road Flyover above

December 2009

K:\EB000305 Central Kowloon Route\Report\EIA (CKR)\Final\Rev 0\Source Files\Land Contaminaiton for CKR Rev 1

Actual Sampling & Testing Plan

Page 2 of 2

Annex 2-2 Relevant Site Borehole Log

T6-116

Dryat

08:00

VERTICAL GROUND LEVEL

3.17

Gold Ram Engineeringand Development

Limited

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

Drillhole completed at 3.17m

5

31

2.4505/05/2009

29/04/2009

+9.94

+9.49

4

3

2

1

2.80mat

18:00

Dryat

18:00 2.35

1.90

1.40

0.90

0.40

Grey occasionally brownish grey, angular tosubangular COBBLE with some angular to subangularmedium to coarse gravel sized moderately strong tostrong granite and concrete fragments. (FILL)

Brown, silty fine to coarse SAND with some angularto subangular fine to coarse gravel sized rockfragments. (FILL)

Firm, orangish brown, sandy clayey SILT with someangular to subangular fine to medium gravel sizedrock fragments. (FILL)

Brown, silty fine to coarse SAND with some angularto subangular fine to coarse gravel sized rockfragments. (FILL)

1. An inspection pit was excavated by hand to a depth of 2.45m.

2.45168mm

05/05/2009

29/04/2009

+10.44

Description

3.17

2.45

2.00

1.50

+8.77

05/05/09

0

1

2

3

4

5

6

7

8

9

10

Drillhole No.

ORIENTATION

D-50

Cas

ing

dept

h (m

)/S

ize

(mm

)

29/04/09

M.Chiu

09/05/2009

P.C.Lee

11/05/2009

Water LevelStandard Penetration TestPermeability TestPiezometer TipStandpipe TipPressuremeter TestImpression Packer TestVane Shear Test

R.Q

.D. %

No.Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Sheet

\\GRSERVER01\NETWORK\GINTW\LIBRARY\AGS3_ALL.GLB 02/07/2009 17:04:47 P:\GINTW\PROJECTS\PROJECTS\HY200814 NEW.GPJ

Frac

ture

Inde

x

Samples

Contract No.Drillhole Record

1

E 834770.25N 819145.91

Water

REMARKS

Tes

ts

to

PROJECT

Wat

erR

ecov

ery

%

1HY/2008/14

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

TypeTot

al c

ore

Rec

over

y %

of

Gra

de

Depth

PBH 0

CO-ORDINATES

+11.94

Rotary Drilling

Machine & No.

Dep

th (m

)

Works Order No.

mPDFLUSHING MEDIUM

Central Kowloon Route and Widening of Gascoigne Road Flyover (Investigation) - Ground Investigation

LOGGED

DATE

CHECKED

DATE

Small Disturbed SampleLarge Disturbed SampleSPT Liner SampleU76 Undisturbed SampleU100 Undisturbed SampleMazier SamplePiston SampleWater Sample

Red

uced

Lev

el

Date

7.00

7.50

9.00

3.35

+9.41

+8.86

+8.56

+8.07

+6.01

+4.91

+4.41

+2.91

5.90

3.84

2.00

2.50

3.05

Brown, slightly clayey silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock fragments. (FILL)

06/05/2009

3.05168mm


Brown occasionally orangish brown, silty fine tocoarse SAND with some angular to subangular fine tocoarse gravel sized rock fragments. (FILL)

Firm, orangish brown, sandy clayey SILT with someangular to subangular fine to medium gravel sizedrock fragments. (FILL)Brownish grey, slightly clayey silty fine to coarseSAND with some angular to subangular fine to coarsegravel sized rock fragments. (FILL)Grey, angular to subangular COBBLE with somecoarse gravel sized strong concrete fragments. (FILL)Wash boring

Grey occasionally black, angular to subangularCOBBLE with some medium to coarse gravel sizedmoderately strong to strong granite, concrete andasphalt fragments and steel bar. (FILL)

Brownish grey, silty fine to coarse SAND with someangular to subangular fine to medium gravel sizedrock fragments. (FILL)

Dryat

08:00

Grey occasionally brownish grey, silty fine to coarseSAND with some angular to subangular fine to coarsegravel sized rock and shell fragments. (FILL frommarine deposits)

Brown occasionally greyish brown, clayey silty fine tocoarse SAND with some angular to subangular fine tocoarse gravel sized rock fragments. (FILL)

7

9.00

9.459.50

9.95

Dryat

18:00

1

2

3

4 +9.91

6

7.45

89

1011

1213

14

15

16

5

0.90

4.05

4.60

4.90

5.90

B=211

B=160

B=101

B=83

B=42

7.95

0.40

7.50

1.40

1.90

2.40

2.90

6.00

6.456.50

6.957.00

89

B=51

87

17

06/05/2009

07/05/2009

3.05

3.84

4.05

4.90

81

69

77

59

T6-116

4.60

100

100

100

78

10018

Rotary Drilling

Machine & No.

Works Order No.

+11.91

CO-ORDINATES

PBH 0A

Sheet

07/05/09

Drillhole Record

D-50

ORIENTATION

Dep

th (m

)

Wat

erR

ecov

ery

%

Depth

PROJECT

to

Tes

ts

REMARKS

Water

E 834769.87N 819146.97

1 2

Date

Red

uced

Lev

el


LOGGED

DATE

CHECKED

DATE


FLUSHING MEDIUM mPD

No.

Drillhole No.

Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Samples

R.Q

.D. %


M.Chiu

09/05/2009

P.C.Lee

11/05/2009

06/05/09

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

0

1

2

3

4

5

6

7

8

9

10

Contract No.

3.35T6-116

T6-116

T6-116

T6-116

Gra

de

Description

of

Tot

al c

ore

Rec

over

y %

TypeDri

lling

Prog

ress

(dd/

mm

/yyy

y)

Leg

end

HY/2008/14

VERTICAL

Solid

cor

eR

ecov

ery

%

F.I.

/ Tes

tD

epth

s (m

)

METHOD

GROUND LEVEL


Limited

Gra

de

Description

VERTICAL

Tot

al c

ore

Rec

over

y %

Type


Limited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

Wat

erR

ecov

ery

%

B=52

2

E 834769.87N 819146.97

Water

REMARKS

Tes

ts

to

of

Depth

Contract No. HY/2008/14

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

PROJECT

20

100

56

METHOD

21

12.00

19

9.56mat

18:00 11.95

11.5011.45

11.00

B=84

22 -0.09Drillhole completed at 12.00m

See previous page

12.00140mm07/05/2009

F.I.

/ Tes

tD

epth

s (m

)

10

11

12

13

14

15

16

17

18

19

20

No.

06/05/09

M.Chiu

09/05/2009

P.C.Lee

11/05/2009

R.Q

.D. % Samples

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Cas

ing

dept

h (m

)/S

ize

(mm

)


Frac

ture

Inde

x


mPD

Works Order No.

Dep

th (m

)

FLUSHING MEDIUM


LOGGED

DATE

CHECKED

DATE


Red

uced

Lev

el

Date

2

D-50

ORIENTATION

Drillhole Record

07/05/09

Sheet

PBH 0A

CO-ORDINATES

+11.91

Rotary Drilling

Machine & No.

Drillhole No.

04/02/2009

1. An inspection pit was excavated by hand to a depth of 3.00m.2. Groundwater sample was taken at 5.00m depth.

Orangish brown, slightly silty fine to coarse SANDwith some angular to subangular fine to coarse gravelsand refuse. (FILL)Brown occasionally yellowish brown, slightly silty fineto coarse SAND with some angular to subangular fineto medium gravel sized rock and occasionally shellfragments. (FILL from marine deposits)

Brown, slightly silty fine to coarse SAND with someangular to subangular fine to coarse gravel sized rockand occasionally shell fragments. (FILL from marinedeposits)

Grey, clayey silty fine to coarse SAND with someangular to subangular fine gravel sized rock and shellfragments. (FILL from marine deposits)Brown, slightly silty fine to coarse SAND with someangular to subangular fine gravel sized rock and shellfragments. (FILL)

Dryat

08:00

9.50

9.00

7.50

0.50

-5.20

0.40 +3.80

9.00

5

4

32

1

F

E

D

C

B

A

Dryat

18:00

9.95

-4.70

5.50

0.90

1.40

1.90

2.40

2.90

9.50

5.45

9.45

5.95

7.00

7.457.50

7.958

5.00

6

04/02/2009

05/02/2009

100-3.20

9

1011

12

100

7100

100

100

100

Drillhole No.

ORIENTATION +4.30

Dep

th (m

)

Rotary Drilling CO-ORDINATES

MBH-20/PBH1

Sheet

06/02/09

Drillhole Record

D-72Machine & No.

M.Chiu

11/02/2009

P.C.Lee

12/02/2009

0

1

2

3

4

5

6

7

8

9

10

Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Samples

No.Frac

ture

Inde

x


04/02/09

R.Q

.D. %


HY/2008/14

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

TypeTot

al c

ore

Rec

over

y %

of

Gra

de

Description

VERTICAL


Limited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

Date

Works Order No.

mPDFLUSHING MEDIUM


LOGGED

DATE

CHECKED

DATE


Leg

end

Red

uced

Lev

el

3

REMARKS

1

E 835112.33N 819073.76

Contract No.

NIL

Wat

erR

ecov

ery

%

DepthTes

ts

PROJECT

to

100

100

100

100

100

100

100

100

100

42

100

100

100

See previous page

100

36

27

2829

3031

3233

100

35

37

3839

4041

100

34

06/02/2009

-15.70

11.00

20.00

05/02/200914.00

168mm

-6.70

24

10

11

12

13

14

15

16

17

18

19

20

26

11.00

11.4511.50

Drillhole No.

Rotary Drilling

+4.30

CO-ORDINATES

MBH-20/PBH1

Sheet

06/02/09

Drillhole Record

ORIENTATION

12.45

D-72

16 11.95

19.00

19.4519.50

19.95

5.50mat

18:00

13

18.50

15

18.45

17

1819

20

21

2223

14

15.50

25

12.50

12.95

14.00

14.4514.50

14.95

18.95

15.45

12.00

15.9516.00

16.9017.00

17.4517.50

17.9518.00

15.00

2Contract No.

Wat

erR

ecov

ery

%

Depth

PROJECT

to

Tes

ts

REMARKSSmall Disturbed SampleLarge Disturbed SampleSPT Liner SampleU76 Undisturbed SampleU100 Undisturbed SampleMazier SamplePiston SampleWater Sample

E 835112.33N 819073.76

3

Date

NIL

Gra

de

Dark greenish grey occasionally dark grey, slightlyclayey silty fine to coarse SAND with some angular tosubangular fine gravel sized rock and shell fragments.(FILL from marine deposits)

Description

of

Tot

al c

ore

Rec

over

y %

TypeDri

lling

Prog

ress

(dd/

mm

/yyy

y)

Leg

end

HY/2008/14

LOGGED

DATE

CHECKED

DATE

VERTICAL


Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Samples

Red

uced

Lev

el

R.Q

.D. %

M.Chiu

11/02/2009

P.C.Lee

12/02/2009

04/02/09

No.


FLUSHING MEDIUM mPD

Works Order No.

Dep

th (m

)

Machine & No.

F.I.

/ Tes

tD

epth

s (m

)

METHOD

Solid

cor

eR

ecov

ery

%GROUND LEVEL


Limited

3.60mat

08:00

Gra

de


Limited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

NIL

20.00T

ests

to

PROJECT

DepthWat

erR

ecov

ery

%

VERTICAL

Description

HY/2008/14

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

TypeTot

al c

ore

Rec

over

y %

ofContract No.

100

-16.70

-16.20

100

20.50

46

4544

43

3.10mat

18:00 20.95

20.5020.45


E 835112.33N 819073.76

Stiff, light grey, sandy silty CLAY with somesubangular to subrounded fine to medium gravel sizedrock fragments. (ALLUVIUM)

Firm to stiff, dark greenish grey occasionally darkgrey, slightly sandy silty CLAY with occasionalangular to subangular fine gravel sized rock and shellfragments and organic matter with offensive smell.(FILL from marine deposits)21.00

140mm06/02/2009 21.00

20

21

22

23

24

25

26

27

28

29

30REMARKS

Samples

04/02/09

M.Chiu

11/02/2009

P.C.Lee

12/02/2009


No.Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Cas

ing

dept

h (m

)/S

ize

(mm

)


Frac

ture

Inde

x

R.Q

.D. %


Works Order No.

FLUSHING MEDIUM

LOGGED

DATE

CHECKED

DATE


Red

uced

Lev

el

Date

3

mPD

Drillhole Record Drillhole No.

D-72

3

06/02/09

Sheet

MBH-20/PBH1

CO-ORDINATES

+4.30

Rotary Drilling

Machine & No.

Dep

th (m

)

ORIENTATION

20/01/2009

7.00168mm


CONCRETE SLABASPHALT SLAB

Brownish grey, silty fine to coarse SAND with someangular to subangular fine gravel sized rock andoccasionally shell fragments. (FILL from marinedeposits)

9.95

Grey, slightly silty fine to coarse SAND with someangular to subangular fine to medium gravel sizedrock and shell fragments. (FILL from marine deposits)

Greyish brown, slight silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock and shell fragments. (FILL from marinedeposits)

9.00

7.00

0.200.10

0.40

Dryat

08:00

-1.96

1

Dryat

18:00

A

B

C

D

-4.91

F

9.45

23

4

5

67

E

5.95

0.90

1.40

1.90

2.40

2.90

5.00

9.95

5.50

9.50

7.00

7.457.50

7.95

9.00

10

5.45

8

20/01/2009

21/01/2009

+4.94+4.84

100

-3.96

11

12

100

100

100

1009

100

Drillhole No.

0

1

2

3

4

5

6

7

8

9

10

Drillhole Record

Rotary Drilling

ORIENTATION

Machine & No. D-72

+5.04

CO-ORDINATES

MBH-16/PBH2

Sheet

22/01/09

Dep

th (m

)

M.Chiu

24/01/2009

P.C.Lee

30/01/2009


Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Samples

No.


20/01/09

R.Q

.D. %

Frac

ture

Inde

x

Type

of

Gra

de

Description

VERTICAL

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)Gold Ram Engineering

and DevelopmentLimited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

Works Order No.

mPDFLUSHING MEDIUM


LOGGED

DATE

CHECKED

DATE


Red

uced

Lev

el

Date

Tot

al c

ore

Rec

over

y %

HY/2008/14

Depth

Contract No. 2

Wat

erR

ecov

ery

%

PROJECT

to

Tes

ts

REMARKS

Water

E 835239.26N 818984.58

1


Extremely weak, reddish brown spotted white, greyand brown, completely decomposed medium grainedGRANITE. (Firm to stiff, sandy clayey SILT withsome fine gravel sized rock fragments.)

9.75mat

08:00

Firm, dark greenish grey, sandy silty CLAY with someangular to subangular fine gravel sized rock and shellfragments and grey, clay pockets. (FILL from marinedeposits)

Firm, dark grey, slightly sandy clayey SILT withoccasional angular to subangular fine gravel sizedrock, glass and brick fragments, organic matter andrefuse with intense offensive smell. (FILL from marinedeposits)

15.00140mm

22/01/2009

21/01/2009


Limited

Firm to stiff, dark greenish grey, slightly sandy siltyCLAY with occasional angular to subangular finegravel sized rock and shell fragments. (MARINEDEPOSITS)

Solid

cor

eR

ecov

ery

%

11.00

F.I.

/ Tes

tD

epth

s (m

)

13.00

15.00

13

100

100

24

2322

2120

1918

1716

16.00

14

100

4.00mat

18:00

15.90

15.0014.90

14.0013.90

13.0012.90

12.0011.95

11.5011.45

15

V

11.00

-10.96

-9.96

-7.96

-5.96

22/01/2009

100

100

100

GROUND LEVEL

METHOD

10

11

12

13

14

15

16

17

18

19

20

Drillhole No.

ORIENTATION

D-72

Drillhole Record

22/01/09

Sheet

MBH-16/PBH2

CO-ORDINATES

+5.04

Rotary Drilling

Machine & No.

Dep

th (m

)

Frac

ture

Inde

x

20/01/09

M.Chiu

24/01/2009

P.C.Lee

30/01/2009


R.Q

.D. %

No.

Samples

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)


Cas

ing

dept

h (m

)/S

ize

(mm

)

of

Wat

erR

ecov

ery

%

Contract No. HY/2008/14

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

PROJECT

Tot

al c

ore

Rec

over

y %

Depth Gra

de

Description

VERTICAL

Type


LOGGED

DATE

CHECKED

DATE


FLUSHING MEDIUM mPD

Date

2

Works Order No.

Tes

ts

REMARKS

Water

E 835239.26N 818984.58

Red

uced

Lev

el

2

to

Grey occasionally dark grey and brown, angular tosubangular COBBLE and BOULDER with somemedium to coarse gravel sized moderately strong tostrong granite, tuff and brick fragments. (FILL)


Firm, dark grey occasionally black, sandy clayey SILTwith occasional angular to subangular fine gravel sizedrock and shell fragments and organic matter withintense offensive smell. (FILL from marine deposits)

Brown, slightly silty fine to coarse SAND with someangular to subangular fine to medium gravel sizedrock and occasionally shell fragments. (FILL frommarine deposits)

8.72168mm 8.72

7.50

5.00Brownish grey occasionally grey, slightly silty fine tocoarse SAND with angular to subangular fine tomedium gravel sized rock and shell fragments. (FILLfrom marine deposits)

9.50

T2-101

T2-101

-2.77

4

11

2

3

4

1

7.95

3

7.50

56

7

8

9

2

5.45

0.40

0.90

1.40

1.90

2.50

1

5.00

100

5.50

5.956.00

6.45

7.00

7.45

2.95

9.50

10

8.72

100

63

-0.27

02/02/2009

100

0

100

100

100

-3.99

Drillhole No.

ORIENTATION +4.73

Dep

th (m

)


MBH-14/PBH3

Sheet

03/02/09

Drillhole Record

D-72Machine & No.

M.Chiu

04/02/2009

P.C.Lee

05/02/2009

0

1

2

3

4

5

6

7

8

9

10

Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Samples

No.Frac

ture

Inde

x


02/02/09

R.Q

.D. %


HY/2008/14

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

TypeTot

al c

ore

Rec

over

y %

of

Gra

de

Description

VERTICAL


Limited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

FLUSHING MEDIUM

2

Date

Red

uced

Lev

el


Leg

end


1

mPD

Works Order No.

LOGGED

DATE

CHECKED

DATE

Tes

ts

E 835276.57N 818947.07

Contract No.

NIL

Wat

erR

ecov

ery

%

REMARKS

Depth

to

PROJECT

See previous page

Grey occasionally brownish grey, slightly silty fine tocoarse SAND with some angular to subangular fine tocoarse gravel sized rock and much shell fragments.(FILL from marine deposits)

03/02/2009

Dark greenish grey, silty fine to coarse SAND withsome angular to subangular fine gravel sized rock andshell fragments. (MARINE DEPOSITS)

Firm to stiff, dark greenish grey, sandy silty CLAYwith some angular to subangular fine gravel sized rockand whole shell fragments. (MARINE DEPOSITS)


3.40mat

08:00

Firm to stiff, dark greenish grey, sandy silty CLAYwith some angular to subangular fine gravel sized rockand shell fragments. (MARINE DEPOSITS)

15.05

-11.87

-14.3719.10

140mm

14.10

16.60

19.10

02/02/2009 12.10

T2-101

T2-101

10.51

T2-101

-7.37

20

10012

1314

15

16

17

3.10mat

18:00

19

19.00

2122

2324

2526

-10.32

18

15.05

11.34

12.1012.10

12.5512.60

13.05

14.10

3.20mat

15:00

14.60

100

16.10

16.5516.60

17.0517.10

18.0018.10

14.55

11.34

27

10.51

63

58

59

03/02/2009

100

100

100

100

100

100

-9.37

Drillhole No.

Date

+4.73

CO-ORDINATES

MBH-14/PBH3

Sheet

03/02/09

Drillhole Record

Machine & No.

ORIENTATION

Dep

th (m

)

D-72


LOGGED

DATE

CHECKED

DATE


FLUSHING MEDIUM mPD

Works Order No.Rotary Drilling


Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Samples

R.Q

.D. %

M.Chiu

04/02/2009

P.C.Lee

05/02/2009

02/02/09

No.

2

10

11

12

13

14

15

16

17

18

19

20

F.I.

/ Tes

tD

epth

s (m

)

METHOD

Solid

cor

eR

ecov

ery

%

Red

uced

Lev

el


Limited

Wat

erR

ecov

ery

%

GROUND LEVEL

REMARKS

2

E 835276.57N 818947.07

Depth

NIL

PROJECT

to

Tes

ts

Contract No.

Gra

de

Description

of

Tot

al c

ore

Rec

over

y %

TypeDri

lling

Prog

ress

(dd/

mm

/yyy

y)

Leg

end

HY/2008/14

VERTICAL

3.00

2.45mat

08:00

T6-131

T6-131

T6-131

T6-131

T6-131

T6-131

Brownish grey occasionally brown, slightly clayeysilty fine to coarse SAND with some angular tosubangular fine to coarse gravel sized rock fragments.(FILL)

07/05/2009

08/05/20096.30

168mm

BRICK SLAB

Dark brown, silty fine to coarse SAND with someangular to subangular fine to medium gravel and muchwood pieces. (FILL)Dark grey, slightly clayey silty fine to coarse SANDwith some angular to subangular fine to coarse gravelsized rock fragments and occasional wood pieces andrefuse. (FILL)

Grey occasionally brownish grey and dark grey,angular to subangular COBBLE and BOULDER withsome medium to coarse gravel sized moderately strongto strong granite, concrete, tuff and brick fragments,wood pieces, refuse and occasional firm, brown sandsilt matrix. (FILL)

Dryat

08:00

T6-131


T6-131

2.50

T6-131

T6-131

T6-131

2

3

4

5

6

78

9 4.0089

Dryat

18:00

07/05/2009

78

0.40

4.80

6.00

6.30

6.80

7.50

8.20

8.70

9.30

9.80

1

B=64

1.75mat

18:00

0.90

1.40

1.90

2.40

3.00

3.453.50

3.95

2.50

B=34

+3.89

08/05/2009

86

+1.45

+0.95

-0.05

0.06

28

4.00

4.80

6.00

6.30

6.80

7.50

8.20

8.70

9.80

09/05/2009

90

83

97

78

76

77

74

93

929.30

+3.95

Dep

th (m

)


MBH-12/PBH4

Sheet

11/05/09

Drillhole Record

DR-76

ORIENTATION

Drillhole No.

Machine & No.

2

to

Tes

ts

REMARKS

Water

E 835348.70N 818941.19

1

Date

Red

uced

Lev

el


LOGGED

DATE

CHECKED

DATE


FLUSHING MEDIUM mPD

Works Order No.

No.Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Samples

R.Q

.D. %


M.Chiu

16/05/2009

P.C.Lee

18/05/2009

07/05/09

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Wat

erR

ecov

ery

%

0

1

2

3

4

5

6

7

8

9

10

PROJECT

Type

VERTICAL

Description

Gra

de

Tot

al c

ore

Rec

over

y %

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

Leg

end

HY/2008/14Contract No.

3.00

of

F.I.

/ Tes

tD

epth

s (m

)

METHOD

Solid

cor

eR

ecov

ery

%GROUND LEVEL


Limited

Depth

14.50

17.50140mm -13.55

-10.55

12.50-8.55

16.00

17.50

11.50

V-12.05

11/05/2009

10.70

86

66

-7.5509/05/2009

Greenish grey occasionally dark greenish grey, siltyfine to coarse SAND with some angular to subangularfine to medium gravel sized rock and shell fragments.(MARINE DEPOSITS)

See previous page

2.30mat

08:00

Firm to stiff, dark grey occasionally yellowish brown,sandy silty CLAY with some subangular to subroundedfine to medium gravel sized rock fragments.(ALLUVIUM)

Extremely weak, yellowish brown, dark grey spottedgrey and brown, completely decomposed mediumgrained GRANITE. (Very stiff, sandy clayey SILTwith some fine gravel sized rock fragments.)

Drillhole completed at 17.50m11/05/2009

Firm, dark greenish grey, very sandy silty CLAY withsome angular to subangular fine to medium gravelsized rock and shell fragments. (DISTURBEDMARINE DEPOSITS)

16.95

14.50

14.9515.00

15.4515.50

15.9516.00

15

16.50

13.95

17.00

17.45

1.65mat

18:00 10

11

1213

16.45

B=175

11.50

B=22

B=28

B=30

B=46

B=18

B=21

B=24

14.45

B=65

14.00

11.50

12.4012.50

12.9513.00

13.4513.50

16

B=63

0

100

14

100

27

1718

1920

2122

2324

100

26

67

28

100

0

89

0

100

89

25

DR-76Machine & No.

Rotary Drilling

+3.95

CO-ORDINATES

MBH-12/PBH4

Sheet

Drillhole Record

ORIENTATION

Drillhole No.

11/05/09

Works Order No.

2

Date

Red

uced

Lev

el


LOGGED

DATE

CHECKED

DATE


Dep

th (m

)

mPDFLUSHING MEDIUMR

.Q.D

. %

Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

No.


M.Chiu

16/05/2009

P.C.Lee

18/05/2009

07/05/09

Samples

10

11

12

13

14

15

16

17

18

19

20

METHOD

10.70

F.I.

/ Tes

tD

epth

s (m

)

T6-131

T2-101

Depth Leg

end

Solid

cor

eR

ecov

ery

%

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

Wat

erR

ecov

ery

%

HY/2008/14

PROJECT

to

Tes

ts

REMARKS

Water

E 835348.70N 818941.19

2Contract No.

GROUND LEVEL


Limited

Type Gra

de

VERTICAL

Description

Tot

al c

ore

Rec

over

y %

of

09/03/2009

7.00

9.00

9.50

10/03/2009

3.00

09/03/2009

10/03/2009

11/03/2009

+3.46

+0.96

+0.46

-1.54

-3.04

5.50

-5.54

3.50

0.50

-5.04

Firm, orangish brown occasionally pinkish brown,sandy clayey SILT with some angular to subangularfine gravel sized rock fragments. (FILL)

2.40mat

08:00

Firm, orangish brown occasionally grey, sandy clayeySILT with some angular to subangular fine to coarsegravel sized rock fragments. (FILL)

Orangish brown, clayey silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock fragments. (FILL)Firm, orangish brown, sandy clayey SILT with someangular to subangular fine to coarse gravel sized rockfragments. (FILL)

Orangish brown, clayey silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock fragments. (FILL)

Dark greenish grey, silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock and shell fragments and occasional clayeypocket. (FILL from marine deposits)

Stiff, light brownish grey occasionally yellowishbrown, sandy silty CLAY with some subangular tosubrounded fine to medium gravel sized rock

2.40mat

08:00

1. An inspection pit was excavated by hand to a depth of 2.50m.2. Environmental samples were taken from depths of 0.50m and 1.50m.

Stiff, pinkish brown occasionally grey, sandy siltyCLAY with some subangular to subrounded fine tomedium gravel sized rock fragments. (ALLUVIUM)

B

7.457.50

7.95

9.00

9.459.50

5.95

A

5.50

C

D

E

1

23

4

5

9.95

1.40

B=50

B=34

B=47

B=64

B=73

B=85

B=63

7.00

0.90

8

1.90

2.40

3.00

3.453.50

3.95

5.00

5.45

0.40

6

100

9

1011

12

13

1415

100

100

100

100

100

100

100

7

16

CO-ORDINATES

MBH-10/PBH5

Sheet

11/03/09

Drillhole Record

D-72

Rotary Drilling

Drillhole No.

Machine & No. Date

ORIENTATION


LOGGED

DATE

CHECKED

DATE


FLUSHING MEDIUM mPD

Works Order No.

+3.96

Dep

th (m

)


Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Samples

R.Q

.D. %

M.Chiu

17/03/2009

P.C.Lee

18/03/2009

09/03/09

No.0

1

2

3

4

5

6

7

8

9

10

2

METHOD

F.I.

/ Tes

tD

epth

s (m

)

Solid

cor

eR

ecov

ery

%GROUND LEVEL

Red

uced

Lev

el

B=40

NIL

Contract No.

Depth


Limited

to

REMARKS

Wat

erR

ecov

ery

%

E 835436.03N 818864.69

1

Tes

ts

Gra

de

VERTICAL

PROJECT

Description

of

Tot

al c

ore

Rec

over

y %

TypeDri

lling

Prog

ress

(dd/

mm

/yyy

y)

Leg

end

HY/2008/14

Gra

de


Limited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

NIL

B=29

Tes

ts

to

PROJECT

DepthWat

erR

ecov

ery

%

VERTICAL

Description

HY/2008/14

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

TypeTot

al c

ore

Rec

over

y %

ofContract No.

20

-7.54100

1918

17

11.95

11.5011.45

11.00

B=35100Stiff, yellowish brown occasionally grey, slightlysandy silty CLAY occasional subangular tosubrounded fine gravel sized rock fragments.(ALLUVIUM)

E 835436.03N 818864.69

-8.04


fragments. (ALLUVIUM)

11.00168mm

11/03/2009 12.00

11.50

10

11

12

13

14

15

16

17

18

19

20REMARKS

Samples

09/03/09

M.Chiu

17/03/2009

P.C.Lee

18/03/2009


No.Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

Cas

ing

dept

h (m

)/S

ize

(mm

)


Frac

ture

Inde

x

R.Q

.D. %

LOGGED

DATE

CHECKED

DATE

Works Order No.

mPD



Red

uced

Lev

el

Date

2

FLUSHING MEDIUM

11/03/09

Drillhole No.

ORIENTATION

Drillhole Record2Sheet

MBH-10/PBH5

CO-ORDINATES

+3.96

Rotary Drilling

Machine & No.

Dep

th (m

)

D-72

1.50

0.50

+1.32

+1.82

+2.82

04/03/2009

+3.82

100

Brown, silty fine to coarse SAND with some angularto subangular fine to coarse gravel sized rockfragments and occasionally silt pocket. (FILL)


Pinkish brown, clayey silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock fragments. (FILL)

2.50

Greyish brown, clayey silty fine to coarse SAND withmuch angular to subangular fine to coarse gravel sizedrock fragments. (FILL)

6

1. An inspection pit was excavated by hand to a depth of 0.90m.2. Environmental sample was taken from depth of 0.50m.3. Groundwater sample was taken from 3.00m.

3.00168mm04/03/2009

5

3.00

Brown occasionally greyish brown, slightly clayeysilty fine to coarse SAND with some angular tosubangular fine to coarse gravel sized rock fragments.(FILL)

ORIENTATION

100

Drillhole No.

D-72

Drillhole Record

04/03/09

Sheet

PBH 6

CO-ORDINATES

+4.32

Rotary Drilling

Machine & No.

Dep

th (m

)

0.80

4

3

21

B

A

2.95

2.502.40

1.95

1.40

0.40

B=38

B=27

0

1

2

3

4

5

6

7

8

9

10

1.50

LOGGED

DATE

CHECKED

DATE

NIL

Works Order No.

mPD



Red

uced

Lev

el

Date

11

FLUSHING MEDIUM

Cas

ing

dept

h (m

)/S

ize

(mm

)

04/03/09

M.Chiu

09/03/2009

P.C.Lee

10/03/2009


R.Q

.D. %

No.Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

REMARKS


Frac

ture

Inde

x

Samples

E 837892.01N 819998.53


Limited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

HY/2008/14

Tes

ts

to

PROJECT

DepthWat

erR

ecov

ery

%

Contract No.

Leg

end

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)

TypeTot

al c

ore

Rec

over

y %

of

Gra

de

Description

VERTICAL

26/02/2009

03/03/2009

7.50168mm

1. An inspection pit was excavated by hand to a depth of 3.00m.2. Environmental sample was taken from depth of 0.50m.3. Groundwater sample was taken from 5.00m.

Reddish brown, slightly clayey silty fine to coarseSAND with some angular to subangular fine tomedium gravel sized rock fragments. (FILL)Firm, orangish brown, sandy clayey SILT with someangular to subangular fine to medium gravel sizedrock fragments. (FILL)

Pinkish brown, clayey silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock fragments. (FILL)Firm, brownish grey, sandy clayey SILT with someangular to subangular fine gravel sized rock fragments.(FILL)

Brownish grey, silty fine to coarse SAND with someangular to subangular fine to coarse gravel sized rockfragments. (FILL)

Extremely weak, pinkish brown occasionally yellowishbrown spotted white, grey and brown, completelydecomposed medium grained GRANITE. (Firm tostiff, sandy clayey SILT with some fine gravel sizedrock fragments.)

8.00

7.00

5.50

5.00

1.00

0.50


2.95mat

08:00

E

7.50

7.95

A

B

7.00

D

5.95

F

1

23

4

5

C 1.40

B=24

B=28

B=53

B=127

7.45

0.90

8

1.90

2.40

2.90

5.00

5.455.50

0.40 +4.51

6

03/03/2009

+4.01

+0.01

-0.49

-1.99

-2.99

26/02/2009

100

100

100

100

V

7

ORIENTATION

Drillhole No.Drillhole Record

03/03/09

Dep

th (m

)

D-72

0

1

2

3

4

5

6

7

8

9

10

Machine & No.

Rotary Drilling

+5.01

CO-ORDINATES

PBH 7

Sheet

R.Q

.D. %

Frac

ture

Inde

x


Cas

ing

dept

h (m

)/S

ize

(mm

)

Wat

er le

vel (

m)

/Tim

e (h

h:m

m)

No.


M.Chiu

09/03/2009

P.C.Lee

10/03/2009

26/02/09

Samples

Type

of

Gra

de

Description

VERTICAL

Dri

lling

Prog

ress

(dd/

mm

/yyy

y)Gold Ram Engineering

and DevelopmentLimited

GROUND LEVEL

Solid

cor

eR

ecov

ery

%

METHOD

F.I.

/ Tes

tD

epth

s (m

)

Works Order No.

mPDFLUSHING MEDIUM


LOGGED

DATE

CHECKED

DATE


Red

uced

Lev

el

Date

1

Tot

al c

ore

Rec

over

y %

Leg

end

HY/2008/14Contract No.

DepthWat

erR

ecov

ery

%

PROJECT

to

Tes

ts

REMARKS

NIL

E 837924.57N 819964.23

1

26/02/2009

10014

100

100

100

100

100-5.65

02/03/2009

100

Orangish brown occasionally brown, slightly clayeysilty fine to coarse SAND with some angular tosubangular fine to coarse gravel sized rock fragments.(FILL)

-3.15

1. An inspection pit was excavated by hand to a depth of 2.50m.2. Environmental samples were taken from depths of 0.50m, 1.50m and 2.50m.

9.50

Firm, dark grey occasionally reddish brown, sandyclayey SILT with some angular to subangular fine tocoarse gravel sized rock fragments. (FILL)

Pinkish brown, clayey silty fine to coarse SAND withsome angular to subangular fine to medium gravelsized rock fragments. (FILL)

Dark grey occasionally pinkish brown and black,clayey silty fine to coarse SAND with some angular tosubangular fine to coarse gravel sized rock and shellfragments and organic matter with offensive smell.(FILL from marine deposits)

Firm, dark greyish grey, sandy silty CLAY with someangular to subangular fine gravel sized rock and shellfragments. (MARINE DEPOSITS)Firm, dark greenish grey, sandy silty CLAY with someangular to subangular fine gravel sized rock and shellfragments. (MARINE DEPOSITS)

26/02/2009

-1.15

-5.1511

+2.35 1.50

5.00

7.00

9.00

B=31

0.90

B=24

B=36

B=36

B=41

B=14

B=2213

1.40

5

B

C

D

E

1

2

0.40

4

9.95

6

7

89

10

3

7.00

1.90

2.40

3.00

3.45

5.00

5.45

A

5.95

2.45mat

18:00

7.457.50

7.95

9.00

9.459.50

12

5.50

ORIENTATION

Drillhole No.

02/03/09Machine & No. D-72

Dep

th (m

)

Drillhole Record

Rotary Drilling

+3.85

CO-ORDINATES

MBH- 8/PBH8

Sheet

M.Chiu

06/03/2009

P.C.Lee

07/03/2009

\\GRSERVER01\NETWORK\GINTW\LIBRARY\AGS3_ALL.GLB 02/07

Contamination Assessment Report and Remediation Action ... · December 09 Page 3-1 K:\EB000305...

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