lamma quarry; casting basin moderate quarry extension ... · lamma rock products limited lamma...

33
LAMMA ROCK PRODUCTS LIMITED Lamma Quarry; Casting Basin & Moderate Quarry Extension, Environmental Impact Assessment Executive Summary June 1993 SHUI ON QUARRIES LTD. '-r--JEnvlronmental a - LAM MA ROCK PRODUCTS LTD. AXIS Environmental Consultants Ltd. I

Upload: vuongdat

Post on 21-Apr-2018

231 views

Category:

Documents


3 download

TRANSCRIPT

LAMMA ROCK PRODUCTS LIMITED

Lamma Quarry; Casting Basin & Moderate Quarry Extension,

Environmental Impact Assessment

Executive Summary

June 1993

SHUI ON QUARRIES LTD.

•-,.e~~AX~/S '-r--JEnvlronmental a -LAM MA ROCK PRODUCTS LTD.

AXIS Environmental Consultants Ltd.

I

j

l

1

1

I ]

n ~

J

]

]

U J

U J U J

J

J

I I

TABLE OF CONTENTS

1.0 INTRODUCTION .. . . ... . . . . . . . ...... .. . . .. .. .. . ..... . ... . . 2 1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Study Objectives . . . . . . . . . . . • • . . . . . . . . . . . . . . • . . . . . . . . . . . 2 1.3 Study Process .. ..... . . ... .. ... .... . .. .. . ...•. .. .. .... 2

2.0 EXISTING FACILITIES AND ACTIVITIES . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Facilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3 2.2 Current Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3

3.0 PROJECT DESCRIPTION: PROPOSED DEVELOPMENTS . . . . . . . . . . . . . . . . 3 3.1 Casting Basin Construction .... .. ........ ... .... . .... . .. . . . 3 3.2 Entrance Channel ... . ........ ..... . . . . . . . . • • . . . . . . . . . .. 4 3.3 Basin Operation .. .. . . . .. . ........ ... . . . . . . . . . . . . . . . . .. 4 3.4 Quarry Extension . . . .... .. .. .. . . .. .. . .. .. .• . . .... . .... . 6

4.0 AIR QUALITY .. .... ... .. . ... . • ........ . ... . .. .. ....... . . . 6 4.1 Introduction . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . • . . . . . . . . . .. 6 4.2 Existing Air Quality . .. ... . . .... ... . .. ... .... . .......... 6 4.3 Modelling Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7

5.0 NOISE . . . . . . . . . . . . . . . . . . . . . . • . • . . . . . . . . . . . . . . . . . . . . . . . .. 7 5.1 Methodology. . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . 7 5.2 Environmental Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8 5.3 Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . 8

6.0 WATER QUALITY .. .• . . .. ... . . ... .... .... .... . . . ...... . . . . 8 6.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.1 Dredging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9

7.0 MARINE BLASTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8.0 WASTE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • • . . . . . . . . . . .. 10

9.0 LANDSCAPE AND VISUAL IMPACT ASSESSMENT. . . . . . . . . . . . . . . . . . . 11 9.1 Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 9.2 Summary of Key Issues . ........ .... . . . . ... .... .. . . . . .... 11

10.0 RECOMMENDED LEASE CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

[.Qml1fQ (}p.arry Casting Basin & Extension· Encull'lc Summary

1.0

1.1

1.2

INTRODUCTION

Background

The quarry at Pok Tung Wan is operated by Lamma Rock Products Ltd., a subsidiary of the Shui On Group, under the current Government Licence No. 428 of 1977 which is due to expire at the end of 1993.

It is proposed that the existing Government Licence is extended for a further 2 years. If the application for the licence extension is approved, it is proposed that the quarry limits be extended and that a casting basin facility be constructed. The basin facility would be used for the construction of precast units which are required for the large number of existing, committed and proposed infrastructure projects within Hong Kong.

Study Objectives

The prime objective of the study is to analyse the existing quarrying activities and predict the impacts associated with the proposed developments and to recommend mitigation measures to reduce any impacts to acceptable levels. Major issues considered under the Study Brief include the assessment of impacts on air quality, noise levels, marine water quality, impacts on the nearby fish culture zone (FeZ), marine blasting and visual impacts.

1.3 Study Process

The study has been carried out in three main stages with the production of three reports culminating with the Final Report.

Baseline Monitoring, during this stage data on air quality, noise and marine water and sediment quality were collected for use in the study. Where the existing data sets were thought to be insufficient extra monitoring ._ programmes were designed and executed. Extra surveys were carried out for noise, marine water quality and marine sediment quality .

Initial Assessment stage where the existing and collected data were used to predict the impacts of the proposed development. The process of data collection and subsequent impact prediction using computer models was carried out for noise and air quality impacts . During this stage it was decided that other impacts, water quality and visual, could be effectively controlled and mitigated against through the use of on-site measures so that no unacceptable off-site impacts were expected. For impacts associated with air, noise, water and waste management monitoring schedules and action plans were prepared.

The Final Stage, where the findings of the initial assessment stage were refined so that the impacts were accurately predicted and effective mitigation measures recommended for each impact category. Also the monitoring and audit schedules were revised in the light of the impact predictions. This stage culminated in the production of a Draft Final Report which following any comments and suitable responses will become the Study Final Report.

IAmma Quarry, CiJsting Basin &: Extension EJA, Executive Summary Our RtfAXT6491054000 Page - 2

j

1

1

1 1 1 ]

J J ]

J

]

J ]

J J

J }

J J I

I

1

1 ]

1

1

1 l J

J

1

]

J ]

J I J

J

2.0

2.1

2.2

3.0

3.1

EXISTING FACILITIES AND ACTIVITIES

Facilities

There are a number of facilities within the Pok Tung Wan quarry including those related to the quarrying operations being carried out by Lamma Rock Products Ltd.

• rock crushing and screening plant

• cement silos (and associated equipment)

• facilities for handling aggregate and cement barges

• a disused tile factory

• and a general storage area.

Current Activities

At present the quarry is being operated under the Government Contract No. 428 of 1977, entitled "Right to Quarry Stone at Pok Tung Wan, Larnma Island". The contract allows for the quarrying and processing of the stone and the precasting of concrete.

The present production rate of the quarry is approximately 230,000 tonnes per month.

Blasting at the quarry occurs approximately twice a week and on each occasion a government representative is required to be present. Following a blast the rock produced is of various sizes and is either transported, 'by a number of large dumptrucks, to the crushing unit to produce an aggregate or , if large rock is required, ego for rock armour, directly to the barge loading point. Following crushing the aggregate product is either taken to the various stockpiles located around the quarry or transported directly to the barge loading point.

PROJECT DESCRIPTION: PROPOSED DEVELOPMENTS

Casting Basin Construction

The Pok Tung Wan quarry has been identified as a potential site for the location of a casting basin in a number of Government feasibility studies including the Lantau Airport Railway immersed tube crossing of Victoria Harbour.

lAnrma Quarry, CDstlng Basin &: Extension EIA, Executive Summary Our RtfAXT6491054000 Page - 3

The size of the proposed basin would be in the order of I30m long by l20m wide at the quarry floor and have a depth of approximately 14m below the present ground level. At this level the invert of the basin would be approximately -9mPD, and be of size approximately l20m x lOOm. This would enable four of the railway units to be cast in the basin at the same time. The existing benched slope at the back of the quarry will need to be pushed back to accommodate the basin.

Excavation of the basin itself will be formed as a drop cut (a normal quarry process) from the platform level at + 5mPD to a basin floor level of -9mPD, this will be achieved by producing progressive benches below the existing quarry floor, and mucking out by means of an inclined road from one corner' of the dock. Access to the floor of the basin would be provided via a ramp

If fissures are encountered that appear to be potentially unstable, rock bolting/dowelling plus grouting techniques will be employed to ensure stability. (This is thought highly unlikely due to the known nature of the quarry rock quality and lack of faults). Any excessive inflow will be grouted.

As the drop cut reaches design level of approximately -9mPD, a perimeter drainage system will be developed leading to sumps that will also act as initial oil interceptors.

It is therefore expected to take approximately 5 months to excavate the 500,000 tonnes of rock in the drop cut.

3.2 Entrance Channel

3.3

To provide access between the casting basin and the sea, it will be necessary to excavate a channel to a depth of -9m below sea level. The width of the channel needs to be a minimum of 15m wide to allow for the passage of the railway tunnel units. Part of the channel may be excavated at the same time as the casting basin, however, the final break through to the sea is to occur after the casting basin is in use and when the construction of the first batch of tunnel units is completed.

To enable this to take place, it will be necessary excavate and dredge the full length of the channel, with drilling and blasting of any encountered rock. A small portion would be left adjacent to the sea, which is to be dredged just prior to floating out of the first batch of units.

Basin Operation

To support the casting basin activities, it will be necessary to provide support facilities and a suitable works area. The activities that would be undertaken in this area would include:

• • •

site offices; workshop and laboratory; stores;

LilmltUJ Quarry, Casdng Basin & Extension EIA, Execull'le Summary Our RefAXT6491054000 Page - 4

I

I 1

1 ]

l I

]

]

J ]

J J

]

J

J ]

]

I

1

1

1

1

]

1 1

1

]

J 1

J J J

• • • •

steel bar cutting and bending area; sand blasting and coating area; form-work storage; and form-work fabrication.

The essential facilities and equipment required during the operation of the casting basin are briefly described below:

Batching Plant

The location of the batching plant for the casting yard will be dependent upon the most economical site. There are two potential alternatives, the first being to upgrade the existing batching plant, and the second to locate a batching plant closer to the casting yard between the current pre-cast yard and the cement works. The former of these alternatives is preferred at this time, and this has been assumed in the assessment.

Steel Bending

An area will need to be set aside to allow for bending and shaping of the reinforcing steel work. The requirements will be the basic standard requirements for any similar operation in Hong Kong.

Site Offices and Store

The current estimates are that approximately 200 people will be employed in the actual casting of the units . Offices to house project personnel bave been estimated as twelve standard container size offices, plus two similar units to act as warehouse facilities. In addition to these facilities, a canteen will be provided, for use by employees.

Wharf

For loading and unloading of materials, and for transport inwards and outwards personnel associated with the operation of the casting basin , a wharf will be required. A seawall wharf of approximately 50m long adjacent to a casting basin facility, is proposed.

Since the tunnel units required for the LAR harbour crossing are as yet undesigned, typical quantities have been determined from the units used for the existing MTRC Admiralty to Tsim Sha Tsui tunnel which were constructed between 1976-79 using a basin on the recent reclamation at Chai Wan. Preliminary planning for the LAR indicates that 12 units each about lOOm long are required, which could be built in 3 batches of four units. Using a casting basin of that proposed, the units would be completed with a frequency of approximately 5 months per batch.

Flotation of Precast Units

When the units are complete and ready for the basin to be flooded. A trial flotation of the units will occur to commission and test the on-board ballasting

Lmnmo QUOlTJ, Casting Basin &: Extension EIA, Execullve SumltUJr] Our RtfAXT6491054000 Page - 5

3.4

4.0

4.1

4.2

system. Once the trial flotation is completed the units will be towed, using tugboats, out of the basin to the fit out/storage mooring. Approximately one unit per day will be towed out to the mooring.

Quarry Extension

It is proposed that the existing lease permitting Lamma Rock Products Ltd. to operate at the Pok Tung Wan quarry be extended for a period of two years after the present lease expires at the end of 1993. The extension would allow the quarry to continue to produce rock and aggregates for the numerous infrastructure projects in Hong Kong.

AIR QUALITY

Introduction

This section assesses the air quality impacts expected to result from the operation of the Larnma quarry and the proposed casting basin. The approach taken in assessing impacts has been to . analyse operations taking place on the quarry site and to identify all significant dust producing activities.

The dust emissions from these activities has then been quantified and a dispersion model has been used with meteorological data provided by the Royal Observatory from Cheung Chau to predict the total suspended particulate (fSP) concentrations. The predicted dust concentrations and dust deposition rates have been compared with local Hong Kong and internationally recognised air quality objectives.

In the assessment three cases have been considered:

• existing operations, including the existing quarry, the existing casting operations and the cement handling operations;

• future operations, including operation of the extension to the quarry and the construction of the casting basin; and

• future operation, including operation of the quarry extension and operation of the casting basin.

Existing Air Quality

Air quality (fSP) measurements have been taken at four monitoring sites in the vicinity of the quarry. The two main sites for which monitoring data are available are located at the Far East Cement silos (site HVC) and near the western quarry boundary (site HVA).

The TSP monitored at the Far East Cement Silos (site HVC) is derived primarily from the quarry and from the nearby cement handling facility.

Lamma QulUTJ, Casling Basin &: Ex/enslon EIA, ExtCUlilJe Summary Our Re! AXT6491054000 Page· 6

I

I 1

l J

1

J

o J 1

J

]

]

J

J

J J J

I

I I I I 1 I I l ]

J

1

J 1

J

1

J j

]

4.3

5.0

5.1

Modelling Results

Overall the air quality modelling results using the TSP data collected from August 1991 to November 1992, and Royal Observatory data for Cheung Chau for 1991, indicate 24-hour TSP concentrations of 120JLgim' at Lo So Shing and 185JLgim' at Sok Kwu Wan, which is within the 24-hour AQO of 260JLgim'. The annual average results of 48 and 55JLgim' at Lo So Shing and So Kwu Wan respectively are within annual average AQO of 80JLgim'.

The modelling studies overall were constrained by the lack of environmental monitoring data. The only way that dust levels can be reliably quantified is via an air quality monitoring programme at Sok Kwu Wan. In this respect Lamma Rock Products have been endeavouring to establish a high volume sampler at Sok Kwu Wan, and are hopeful to be able to commence monitoring in the near future.

The pattern of TSP pollution in the area as indicated by the modelling study using the long-term monitoring data from site HVC is one of acceptable air quality degraded on occasions for short periods.

NOISE

Methodology

The approach taken for the noise assessment was as follows:

• potential NSRs were identified;

• noise levels were measured at the closest NSR, the restaurants at Sok Kwu Wan and near the school located at Lo So Shing;

the types of equipment used on the site were identified and the noise , levels of the most prominent machines were measured;

noise from existing operations was measured at the NSRs;

using the Environmental Noise Model (ENM) model, noise from operations was predicted and the future noise levels estimated; and

the noise levels associated with the proposed development were compared to existing background noise levels, to the existing quarry noise levels and to the Acceptable Noise Levels (ANL) contained in the Technical Memorandum for the Assessment of Noise from Places Other than Domestic Premises. Public Places or Construction Sites and the Technical Memorandum on Noise from Construction Work other than Percussive Piling. The noise levels were also compared to the recommended criteria contained in the Environmental Guidelines in Hong Kong (HKPSG).

Lamma Quarry, Casting Basin &: Extension EtA, Executive Summary Our RtfAXT6491054000 Page ~ 7

5.2

5.3

6.0

6.1

Environmental Guidelines

The HKPSG advise that the noise from new development should not exceed a standard that is 5dB less than the relevant ANL. In the current case the ANL for the industrial activities in daytime/evening and night-time are 6OdB(A) and 50dB(A) respectively. Therefore the relevant planning level would be 55dB(A) and 45dB(A).

The quarry is not operated at night-time. Should the casting basin be operated at night baseline monitoring would be undertaken to confirm that it complies with the relevant criteria. The assessment indicates that noise levels of 45dBA and 50dBA at the nearest NSR would be achievable from the construction and industrial activities respectively in the casting basin.

The measured and predicted noise from the industrial activities associated with the quarry at the closest NSR is approximately 54dBA (57dBA at a building facade). The noise level therefore exceeds the recommended Environmental Guideline by approximately 2dBA.

Conclusions

From the discussion it is concluded that the existing operations comply with the criteria appropriate for industrial and construction activities. Further the extension of the quarry will not introduce any new noise sources and will not alter the current level of noise. The proposed casting basin will require some new sources of noise but these will also not increase the current level of noise from the quarry site.

The standard for new construction equipment to be operated on site, such as new cranes and possibly a generating set, will be 45dBA cumulative at the nearest NSR (north of the village of Sok Kwu Wan).

Some of the current operations do exceed the recommended Environmental Guidelines for new development by 2dB. However, this is not considered significant as the noise will be a continuation of the existing noise and will not have a significant impact upon those residents in any NSR. The study leading to this report has also identified that the principal noise sources are the crushers, and these will be addressed during regular maintenance programs in a continuing effort to reduce noise. In addition industrial operations, such as crushing, should not be conducted during night-time.

A Construction Noise Permit would be required for construction activities associated with the casting basin at night.

WATER QUALITY

Background

The key areas of potential water quality impact identified in the assessment relate to dredging to provide adequate clearance at the dock gate, treatment and discharge of water following the flooding of the basin, and sewage

Lomma QUtuTJ, Casdng Balln &: Extension EIA, Execullve Summary Our RtfAXT64910S4000 Page - 8

I 1

1

1 ]

]

]

n 1 ]

]

]

J J J

]

J

]

J ]

I 1

1

I I 1

I ]

l J

J

]

J I

I J J J I I

6.1

treatment for construction workers on-site. Blasting may also potentially affect marine ecology and water quality, and this issue is discussed further in Section 7.

To protect the water quality, of the Fish Culture Zone (FCZ), the Company has agreed to a water monitoring schedule and an action plan. Compliance with this monitoring schedule and action plan will be included as part of the Company's lease conditions.

The Company started a monthly monitoring programme at five (5) locations in the bay, in January of this year . This monitoring programme will continue during the construction and operation of the casting basin. In addition, the Company will monitor the water quality at seven (7) locations whenever water is being pumped in or out of the basin and when dredging the entrance channel.

The action plan requires the Company to inform EPD and AFD if a 20 % decline in the background water quality occurs, identify any immediate cause and take appropriate action. If the EPD's Water Quality Objectives (WQO) are approached then immediate remedial action has to be taken or work must stop.

Environmental monitoring will be undertaken to ensure that no deterioration in marine water quality occurs in the vicinity of the FCZs. The key parameters to be tested will be the aesthetic appearance of the water (particularly noting the presence of oils and grease), the concentration of dissolved oxygen and the level of suspended solids.

In addition, effluents arising from the settlement tank and from the sewage treatment plant would be monitored to check compliance with the Technical Memorandum on Standards of Effluents Discharged into Drainage Systems, . -Inland Waters and Coastal Waters. under the Water Pollution Control Ordinance. Depending on the type of mould oils utilised, effluents discharged may be tested for phenolic and other substances, however it is proposed that the mould oils/release agents used would not contain phenolic substances.

To ensure that the mitigation measures discussed in this Section to control/minimise water quality impacts are adopted effectively, it is proposed that specific environmental clauses would be incorporated into the contract documents for operating the casting basin.

Dredging

Dredging of the existing marine sediments is required to a depth of - 9mPD if no rock is encountered. It is intended to use a floating silt curtain designed to contain suspended solids. As part of the operation control measures , suspended solids would be monitored outside the screen; dredging would be halted if levels approach 90% of the upper control limits. Owing to the small area to be dredged, mechanical grab dredgers would be used.

LamltllJ Quarry, Casting Basin &: Extension EIA, Executive Summary Our Rei AXT64910S4000 Page· 9

7.0

The dredger would be fitted with a closed seabed grab, and the dredged material loaded onto a split barge with a water tight seal. No barge overflowing would be permitted, and dredging would be curtailed when barges move in and out of the silt curtain enclosure.

MARINE BLASTING

At present it is not known if marine blasting will be necessary, because information on the depth to bedrock in the area of the proposed channel is not known.

Should marine blasting be required the design of the blasting sequence, charge siie etc. will be carried out by an independent technical specialist, and submitted to the Mines and Quarries Division of Civil Engineering Department for their approval, and the Marine Department and other departments if necessary.

The assessment has indicated that, should marine blasting be required, the FCZ would not be affected. The predicted peak pressures at the nearest FCZ (some 500m away) have indicated levels well below known fish injury thresholds.

Should the site investigation indicate the need for marine blasting, a marine ecology survey would be undertaken immediately prior to and after blasting. The survey would note and record the presence and abundance of marine species in the vicinity of the area to be blasted. The survey programme would be discussed and agreed with AFD prior to any blasting, and the results of the survey would be submitted to AFD and EPD.

A survey of the marine sediments in the area of the proposed channel has indicated that the sediments are categorised as clean Class A sediments. It is therefore considered that the dredging, transport and disposal of the sediments do not require any special precautions or requirements other than those normally applied for the dredging of clean material.

I 1

1

1

1 ]

1

]

1 ]

]

)

J

8.0 WASTE

The extension of the existing quarry in particular and the construction of the J casting basin are not anticipated to generate any significant waste management related impacts provided good site practice is adhered to. For ] the proposed casting basin operations, waste would be collected and surface water is passed through settlement and pretreatment tanks prior to discharge.

The marine mud which will need dredging for formation of the entrance J channel has been assessed for contamination, and are classified as clean (class A), sediments. The dredging and disposal will be carried out according to agreed procedures. J

The operation of the casting basin has significant potential to create impacts during the basin flooding and pre-cast unit flotation and removal processes. J

Ltunma QIUUTY. Cudng Basin &: Ex/ension E11&, Executive Summary Our RtfAXT64910S4000 Pagt - 10

J

J J J J ]

;]

:1 fJ ,

o ]

:1 !-l J

o

o J U

J ]

:j

! 1

9.0

9.1

9.2

General good site practice and ongoing careful collection of waste materials and wastewater will be required as well as a special clean up exercise during each floodinglflotation event in order to minimise waste related impacts.

The installation of a sewage treatment facility will keep sewage related discharges to within acceptable limits.

A general site clean up and removal of existing scrap and waste materials will be undertaken prior to every flooding of the basin.

LANDSCAPE AND VISUAL IMPACT ASSESSMENT

Methodology

The Landscape and visual assessment followed the following methodology:

• assess the visual and landscape impact of the proposed casting basin during both the construction and operational periods;

• assess the visual and landscape impact of the proposed extension to the quarry; and

• provide guidelines for the mitigation of any impact.

It should also be noted that the Geotechnical Engineering Office of the Civil Engineering Department will be carrying out a study to investigate the long term quarrying and Landscaping requirements for the Sok Kwu Wan QUarry.

Summary of Key Issues

The assessment has identified the following impacts:

• no significant increase in the visual impact from the construction or operation of the casting basin on key receptors in Picnic Bay;

no significant increase in the visual impact from the proposed quarry extension on key receptors in Picnic Bay, or on more distant viewpoints on Hong Kong Island;

moderate visual impact, due to modification of the ridgeline, on sensitive receptors at Lo Tik Wan;

landscape impacts of the proposed casting basin and quarry extension are seen as moderate only, in view of the severe impact already created by the existing quarry;

delay in implementing the rehabilitation programme, however the continued operation of the quarry presents the opportunity to derive a more natural final landform.

umma Quarry, Casting Basl" &: Extension EIA, Executive Summary Our Rq AXT6491054000 Page ·11

10.0 RECOMMENDED LEASE CONDITIONS

A list of recommendations for inclusion as environmental clauses in the quarry lease and casting basin contract conditions are provided below:

Air PoDution Control

Noise

Waste

the operator shall take all necessary steps to ensure that fugitive dust from the premises do not exceed the Air Qualily Objectives when measured at or beyond the boundary of the premises

the operator shall undertake a site inspection audit to detennine an action list prioritizing the measures for control of fugitive dust

the operator shall comply with relevant legislation regarding "specified processes" including compliance with associated "Best Practicable Means (BPM) requirements

comply with the EM & A schedules

ensure that prior to any night-time work being undertaken monitoring is carried out to conftrm the acceptability of the noise produced by the casting basin operations

where ever possible to utilise electrically powered plant e.g. cranes

construction and industrial additional overall equipment noise levels to be <4SdBA and <SOdBA respectively at the nearest NSR

comply with the EM & A schedules.

ensure a Construction Noise Pennit be obtained prior to undertaking any work within restricted hours

ensure that prior to the basin being flooded a full and thorough manual clean-up of the casting basin is carried out and subsequently checked by a senior member of staff

ensure that prior to the basin being flooded and after the manual clean-up the casting basin is washed down. The waste water generated by the basin washdown must be transferred to the surface treatment tank before discharge

ensure that after the casting basin is flooded and prior to the seagates being fully opened any floating materials are removed and are disposed of in an appropriate manner

ensure that the monitoring programme as specified in the EM & A schedules i. followed and complied with

Lomma QUt/lT1. eartlng Basin & Extension EIA. Executive Summary Our Re.! AXT64910S4000

Quarry

Quarry

Casting Basin & Quarry

Casting Basin & Quarry

Casting Basin

Casting Basin

Casting Basin

Casting Basin &

Quarry

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Quarry & Casting

Basin

Page -12

]

]

l

J ]

]

J J

]

]

J J

J ]

J

]

J o o o o o o o o o o J J

J J .l

Water

ensure that the use of phenolic compounds is, if possible, prohibited

ensure that the location of the sewage treatment plant (STP) discharge point is agreed with AFD and EPD

ensure that the discharge licence requirements for the STP and the surface treatment tank are complied with

ensure that any refuelling of the plant equipment is, where possible, carried out outside the basin

ensure that any water pumped out of the basin passes through the surface treatment tank prior to discharge

ensure that any maintenance of the plant equipment is carried out outside the basin

ensure that the preparation of the fonnwork is carried out outside the basin, including the cleaning and application of mould oils/release agents

ensure that the concrete curing process employed is, where possible, carried out through the use of curing membranes

ensure that the casting basin seagates are only opened on an ebb tide

ensure that prior to the casting basin being flooded and the seagates opened AFD, EPD and Marine Department are infonned

ensure that the monitoring programme as specified in the EM & A schedules is followed and complied with

lAmma Quarry, Casting Basin &: Extension EIA, Executlye Summary Our RtfAXT649/0S4000

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin

Casting Basin & Quarry

Page -13

\ \

, ('~"k \ "V<'<-

POK TUNG WAN QUARRY

JobTitle

AXIS Drg Title

Environmental

, , , •

~

*. -it

*' I --I

LAMMA QUARRY EIA

LOCATION OF POK TUNG WAN QUARRY

Figure No. 1.1

;

I I

J

]

J

~

!~

]

:]

o

J ]

o o u o o

u

I ". ' . .. : ..

....... - ..

o

i •

AXIS Environmental

o

Job lltl. :

Org 1111. :

,

LAMMA QUARRY EIA

I'LAN OF I'IWI'OSEI> CASTING IIASIN SHOWING LANDFORM AT Tlm END 01' 1995

Scal.: N.T.S Drg No. t------l

f19 No.

2.l Dot. :

Cl ~ Cl)

0 r:.. 0 ~ r:..z ~Ul .:r:: -< E-<~ :::Cl ClZ ;:>-01;; ~< =:u E-< z 0 1: u ~ (IJ

-r Cl)

~Ir '"

I'

-><: ..q:

I'

I'

r I" I"

-J I . ]

·1 ~] cl z

~

cl z

t

ul ..., .:

.. .. . ~ ;8

'0 -c: .. E c:

~ t5

1 ]

]

J J J J ]

]

J n J J J ]

J J I

LAMMA ROCK PRODUCTS LIMITED

Lamma Quarry; Casting Basin & Moderate Quarry Extension,

Environmental Impact Assessment

Executive Summary

Chinese Text

June 1993

SHUI ON QUARRIES LTD.

~AXIS Environmental

LAM MA ROCK PRODUCTS LTD.

AXIS Environmental Consultants Ltd.

:l l J

I*J 7(1 G!:lili ~ ~

Yi!.

l M:fl-1.0

J 1.1 lIf'iil: 1.2 li1f~Elt8 1.3 li1f~l§~

J mlfifi!:Bffi&.J(;l'§mlh~~ 2.0

J 2.1 ifi!:Bffi 2 . 2 mllft8J(;l'§mlh~~

J 3.0 I ~ :g;j El t8 If rm jt f~ : ftf mi t8 :g;j El 3. 1 it1\ ~ ± _ it ~ 1& aH'O:

J 3.2 )..0

3.3 ~ 1& t8 fi fF 3.4 15 ji~U\ t8 II mi

J 4.0 ~~1lt~

J 4.1 M:fl-4.2 ElIi!it8~~1lt~ 4.3 m ftf i!!Oii, rJi ~

J 5.0 ~"" • B

0 5. 1 ~t!i:15$ 5.2 ~ :IJf :15 Dii t8 ~ fm 5.3 ~rJi

[] 6 .0 7l<1ltflijlUi

lJ 6.1 lIf'iil: 6.2 1U6I~

] 7.0 ilL!: t.i li1i'l

J 8.0 J3i~

9.0 ~ lIlI &. m "'UPS t8 W {t

J 9.1 Wt!i:15$ 9.2 ±~flijlUill!~

J 10.0 If rm I:I:l * ~ 16: t8 ;g ::HUll

J 1

~l

IJ -1

J J J :J n J J J J J D

J --]

J J J J I

1. 0 1l1! it

1.1 'iWi/:

~ftmM~~E~~~~$R~~~m~0~~mY~EM

IflUiHf m 0 ~ . ;jIHUnf!: $: RHll II\¥ R ill ~ nl\! ~ ( ~ ~ 4 2 8/1 9 7 7 )

M ~ it ~ 0 ffij ~ n!\! ~ lm 1f 1£ 1993fj::!if $/J It§ 0

.Mlm~n!\!~E.~fj:: .• ~E.n!\!~fj::lt§~$.~m.E w~~wmlm1f~* ••.• 1£~.~~~~±~~a •. ffl~.m~ff.M~ff~a~.§M~~.~~o

1.2lUfYi:§~

lUfYi:~~~§~~ •• II\¥E~M.~~~ff~fi .• OOM. .I~m*~.w~&m.~~.m.~~.~a~.w • • ~~~~*.olUfYi:.~~~~ ••• SM.~~~ •. ~~*.&w~*~m*~.w .• ~~~~~~.w~& wJ:m~&m~.wfF illWiIF~fi 0

1.3lUfYi:i§~

lUfYi:B~~~m.~ff .• lt§~~~lm~~~d-m~.~

WW~~lt§:1£WW~~lt§~B~~~~~~~., ~~&

w~*~.m~.~.~~~.~.~~lm1f~fflftlUfYi:E

OOo~ft.~~~.~R~. ~~.M7~~~~.B~~

~fflo~II\¥ .• ft~~,w~*~&w~m~.~.~B~ ff m j~ ~ HIHl' 0

www.lt§:1£~m •.• ~&M~~~~~~ffl*.OOM ••• §Mm*~.wo~~~~~~&~ •• ffl~~~fF ~~M~ffl~.OO.~~&~~~.~.wo1£~m.~.

- 1 -

.1

1 l l ]

J J J J J J J o o Cl

J J J J J I

~~~~~.mm ••• ~~&~~.*~&m~~~a~ W.~.~.~~W •• ~.~fi.;~.~B~~~~fi ~.&fi~~~.~M.~~, ~.,*~&~ •• ~.g

•• ~.:~WM.~.~~~B~~~fi.~8~~W~ ~.m.~.~~.~~.w~m8~ •• ~.~a~w~ m.o~*.~% •• ~2 •. ~~&~¥M.~B~wm ~~.&o~.~.~ •• ~8M~~5~~~ •• ~5W ~.~~~.g~~2.~.~ ••• ~~~5o

2.11&.

.OO~~I&.SM.Y.~M~M.m0~OO.~~~I&.:

'1i$~&m1i~!i

· Dt:ll*iJ6m~ (&M{4:) · Jil~Ii$~I&.&*iJ6JHG · B~m~~liUili • ~ & fJ; - WH1H'j' m ~ iii 11

2.2 i~n~~t§~~3l

§ ru, ~ ~ f,jj! :lIU~ ~ ili':{ 1f.J.g.!.!{;j OIBft42811977) ~ m. ~ jjHr ~

.~ •• .g.!.!{;j~~"~.Y •• M~oo.~~~m~·. ~

.ft~OO.&~I~~&~.~~±.~{4:o

§ ru 4lf.F.l ~:!i!.!{;j ~230 .0001ll1 0

~~f,jj!!.!{;j4lfmM~fi~~~~.4lf~~ •• ili':{If.J~~~~o

m~ •. ~M~M*~8~o~M~.~*~~~.~M~ 1i$~$.~~~Ii$~~M;~m~g.~*~. M~M ••

- 2 -

]

"1

J J ]

[J

J o J ]

J J U

o o J J J :J ]

I

m~tt.oo~~~~o~~~£I~~. £fi~~~~~tt

£~rn~~~~~*~. ~Hm~tt.oo~~~~o

3.1 ~~±l\HJ:~~RH!!~

.~8~.&~fi~~fittm5M~ .••• ~£~m.~ ~~~±~~~~~~A~~~~oL~~m~W5§m~

~~*.ili~~~~~~~ •• m~m~~~g~~~fitt m~ 0

ltf~~iG~~Jm{ii:~£~mL. -/l1:, if'.,~7tlltl~130*&120

*. ~ 1t!r{;J ~ ~ ilii w.l' 14* 0 ~ m - *.sp. ~ ~ ~ I*1l1!tl !r{;J-9*

PD.ilii~!r{;J120*X100*o tH{;3~IPl~1ft:il'l41~dlU.Hll~o £

~m~iliim~~~~~~$~~~.W.~~~~R~~Mo

~ .sp. if * ¥ + 5 * P D ~ ~ ~ ~ ilii * .sp. - 9 * P D r .. , ~ ~ ~ fi P.! Hi! I1§1 ((!Jl~£.1Emf#.l:!*1§1~) 0 ~li~m-~*. ~~~

mm~l'~~m~~~if~.M~Mif~-~~®-~~m

W.~~Hi!ili~~M~olPl~~~m~~ifw.~~ili~~o

~.ilim~ ••• ~~~~~~.M~:!*ffl~£.W.&~~ jJ{f.f1j. w.*~~JEo (~~. m~~ttM~*. ~~£~~

£Ji.fiJ3.MfllUHit) 0 :ti~A~~.~~W.~~JJ~.tlflllo

'iij~Hi!~wHt*.sp.~ (!r{;J-9*PD) . ~~~Jl!!JW~ll'I:~!dfM

~.M#. ~~AW.~~M~~JJo

- 3 -

]

]

l ]

]

]

:]

n ]

J ]

J J J J ]

J J J J 1

3.2 Ar:llllni: .7.m.~±~~.8 •• ~lIIni:.~.m~-_lIIni:~ * -'JZ ~ l' - 9 * PD. m IJf. ~ Y • 15 * . .Id. ~ 1tF m li\II ~ ~ ~ 1IIl§ 0

lIIni:~.ffim~Ifi~.Id. ••• 8~m~Ifi~.mfi.m •••• ~.~.ffi~~M8B~M~m.~~~ni:~~B J1ll!i7'GnJG.;t~IbIo

.1JG.g...t~~~. ~.m~lIIni:(JJ:_~-Il!:IJf.). ~=I*mm:fi

&m:fiE~mfio~*. ~m.-~.ffi ••• ffi~.ffi. •• ffi~~m-m.ru~~~m.Emfim~o

3.3 .8~~fF

.71JG.g..8~~fF.~ •• m~m.~&~.~IfF~m. ~.~ml*.J;mnffl:

· jj!8mI~ 'I:tJl\'&1f~~

'l!T~~

· m _ • flj! l}J WlJ :tJl\ 8 · 1'.:l>:fi tI ~ .& iili Ri :tJl\ :It!!

'~Iii'rl!TB'

• ~nJGlii'r1JnI

*iJbli1$lil! *iJbM~m~~.Id. • .g.¥~~.M~8~ ••. m~m~~ ~:m-~~~~mW*iJbM~m~.Id.&a. B-~~M~

;m*iJbM~m.~.~±~~~~~m.~m~~~&*iJb

IfFOOzOOo~§Mrn~.M~.~.~~.rn~~~.~

.Id. ~ iN •• ffUlL

- 4 -

]

:1 J l J J J o J J J J o []

o J J ]

J ]

I

iUl!!i !HI Nm~~-~~~~~~ffl~n!!i~&~~mM~~~o~

~~mm~*~~~~g~~~~~*~$~~~o

~ :!l!! ~H'; ~ & !fi' ¥n ~

~ § ilHHt. ~ M f'I: lfHi jj li!i 1I\l. 1011. m ~ ~ ~ ~ 2 0 0.A. . me o ~ PJi m jjjj it ~ t~ W M 12 tI ~ $ ~ lI! ~ jjjj it. ~ II\l to!fJ m 2 tI jjjjitm~~~~. m~~!fi'~*;ft*.m.ft-tl~.m

mI~mo

A£ ~E~ •• ¥nM&~~I~.A..lli.A. .••• ft-tla* ... m ~ jj. ft - tI ~ 50 %: -Ilt. ~ M i.t ~. hi!! ~ ~ ifHLit. $ 0

~M*~iliM~~~~&~m.f'I:~.Mto!fJ*~lli.mPJi.

;z 1lI:I: N ~ § il1i l1Il tl:' ~ it & ~ rJ> Pi! ~ ~ M ~ ~ m (~M 1976

- 7 9 :IF r .. , ) tl:' JII. slfH* m ~ JII 1£ ~ iI!! JfE .f1! ~ i.t:ll!!o :m MHi5 M . * _ ili M ~ ~ ~ m 12 fm • f'I: . ~ -Ilt ~ 100 %: .1lJ :7.t ~ 3 tit HIl. f'I: . ~~~jj~i.t~ .• f'l:wtlt~m5fm~~~o

ffl !iHt ~ i.!¥ j}] .ffl~f'l:B~~ .• 1lJ~i.t~it*II\l .••• fireffl~f'l:W j}] .• ~.~.MM~.o.Wj}].~~~ •.• f'I:.~~ OO~i.t~~E.m.!fi'~.OO~oMMwB.~W-.ffl~

f'l:m$lJ.WJ~o

3.4 :fiWJI;zl!U~

B~jjNmll\l.~mY~:fiM~~Wm0~~~~~iI!!:fiW

~ lIJj m ~ ~ 2:IF. (:t£ § il1i ffl ~ M 1993:IF Jf£ fti]j ~ EM) • =G

~~-Ilt~mllJj.:fiW~1lJ~M~~:fiM&~:fi~m*~~m

*~~~m§;zmo

- 5 -

l .1 ]

l J J ]

J l ]

J ]

J D

o J J J J .J 1

4.1 1ll!1r

*$ffi~ft~~~~mY§E~m&~~~~~~~±m~

~ i1J! M ill ~ ;z ~ ~ '{{l ~ ~ VJ! 0 W {t ~ * l!I m B ft E ~ m i1J! ~

~~~~fi&~lli8 •• ~m.~~~~~llio

~ •• ~~~.~~m.~B.~;~.~m-~ti.m~ (~~.~~~~.~~~~~l!I)~m~~~*~~~~~

~ (TSP)~.o mlJlJJ~m.~i.Ii!il:b*~W*ii&IMII~JHi1liiJ~

~ ~ '{{l ~ Wi i\t f'Fl:b ~ 0

ftW®~~*.~~~~~~ft~.;Z~:

·m.~~.~.~~m.E~m .•• m~~~~.~& 7.l<iJE!i&iI1l!~I~~~;

·K*~~~.~.~~E~~.~.~~~&~~±m~

~i1J!~~~;&

·K*~~~.~.~~E~~.~$ffi~~~&~~±m

~ ~ i1J! ~ ~ f'Po

4.2 m.~~'{{l~

~ ~ '({l ~ ~ i!!U. I ~ B ft E t.&l ~fnr ~ 4 ~ M ~ i'45 lJ!i n . ~ * l'f:i ~~~M~i'45. -~~ftr~.7.I<iJEJ~7.I<iJEa~~M~~

TSP ~ ~ ~ i:E E ~ m & E ~ m ~ j[[ ~ 7.1< iJE!i&i I1l! r& 1Jfli * ~ t~ ~ 0

ft ~. 7.1< iJE (HVC) M ill; n;z ~ ~ l-'¥ ~ ~ ~ ~;f,;j!j * ~ ~ ~ 7 E ~ m~&mj[[;z7.I<iJE~M.~;Z~.ti~o

4.3 mWfi!!tl~;f,;j!j*

* ill ft 1991 :If HI ~ 1992 :If 11 M :li~ ~ T S P ~ l!I ~ & • ~ ~ ~

- 6 -

]

l ]

-I

l ]

]

1 J ]

]

:1 J Q

o ]

J ]

J ]

I

it 1 9 9 1 ~ aHIHli !!l'i m, ~:Iilt ~ m m It! mu 8lt i\IHl~ !!l'i m ; jjf J.l Wi it!! ~ m 2 H' ~ f8 T S P ~ i'ii :11: ~ m ft. 15 1 2 0 u g , 1£ ~ 1'§! it! flU ~ m ft. 15 * 185 u g , ~ Il! j!i ~ 1£ ~ m ~ ~ fij ~ ( A Q 0 ) m 'j' ~ M m ft. 15 * 260 u g f81l! j!i Z i*.J f8 0 lifj iI!! ~ >JZ ~ flU 7t 5JU ~ m ft.15 * 48

u g.& m ft. 15 * 55 u g ,lJj\ ~ 1£ All 0 ~ >JZ ~ m ft.15 * 80 u g Z i*.J 0

~a~B,mMru8lt~~ •• ~~~~.Il!j!i~m~f8, m -~~.ru~:II:*>JZ.~.~~~1'§!it!f8~m~~~.~*

~~fif8,~mY.EM.M.m0~B.8lt1£~1'§!it!~~

*:II:~*, ~.~~.~~~*OOM~fio

~ j!i m M 7iJf ~ M tU, ti HVC ~ ~ fj -!i'1: JtI] ~., ~ 1& f8 ~ j!i Ii m .• TSPt5 ~ 1f ~ ~ f8 ~ ~ fi 1l!""F I\ii\, ~ ~ lJj\ ~ -!i'1: 0

5.1 W{t15it IlilfW{tf815it:l!lJ""F:

• ~~~.g.f8J.ilf~!\i!\~(NSR); • Ili If • 1£ :& m 1II f8 K S R mu :11:, @. li5 ill .~ -'& it! f8 'Ht .& ill • jjfJ.lWif8¥~;

·~~l£~Wit!!~~~mf8~~~n.~:&!!l'i~f8~~~ilif8

Ili {f B mu :11: liiHili! ""F * 0

• m ~ l1I! 1'F f.\¥ ~ ~ • g: f8 Ili If B 1£ :g. H S R liiH!! ""F * 0

·~m~~llilfm., ~~mrul1l!1'Ff.\¥~f8llilf~'&~*Ili{f

f8*>JZo • M ~ Ji:il lJi El f8 I!.i If * >JZ ~ ~ m ~ 18 :Ill: II.i If * 3jZ I:b ~, El fiIj E ~~l!.ilf*>JZ.&~m~lI.ilf*>JZ(~~.W{ttt~~*f8i1!!

15,0~~ft.~~iI!!MIli{ff8~.~&~~.&.g~{t~

~I~ (I~'d:rm) ~1~~.g:f8l11lff8~U1~&~) ; Jlt1~ lJj\ ~ .. ~ if!] m tu ~ ~ ~ ~ flU" (H K P S G ) 1'F I:b ~ 0

- 7 -

1

l ]

]

o ]

o o J J J J []

o J J :]

]

J ] -1

5 . 2 ~:t.l n jjjj ag i!,ll 11 U H K P S G ~ ~UJi ~ Jiii JJi El ag IJABf :;r- lif!\ jij! illS '1f MM ~ i!,ll • I!Il lif!\ ~ '1f MM ag or ~ ~ ag PI if ¥ 1<& (A H L) Y 5d B. l!i El nu i'Ji IU.f>. I3IHI! fF 8 re' / Ji ~ .& Ill!! 1: ag AN L 7t }ilj ~ 60 d B ( A ) .& 50 d B ( A) . ~ JIt '1f g~ ag M t.U 11< .IjZ ~ ff :ll! 55 d B ( A ) .& 45 d B ( A ) 0

~~~~IIl!!M:ll!:;r-~fiM.ag.~~~~±~~.8~IIl!!1:fF

•. Mlif!\.%~fimWag~ •. ~~.N~~MMm2oW~M ~.8ag~ • .&I.fF.i'Ji.~ag~if1l<.ljZlif!\or7tR~R~ 45dBA 0

lIE ~ ~ t~ fF. PJi i!\U:!i.& ffl i!\IJ ag ~ if fif3 ~ 54dBA (. ~ ~ &. M jjjj ;2 Pi if fa lIU ~ 57dBA). ~ JIt. I!Jii if jij! ~ ~:t.l m 51 i'Ji.!ill ag ~ iI,llii2dBA o

5.3 ~i\G

lIE1:3!lif~~. Elnu~~~~tiagIfF.&.%RIl1ilagJfif1l<

. .IjZ:ll!N~'1fMM~iI,llagoJlt*.~~JiiiJJiEl:;r-.m*ffM.ag l!Jiiif*~.~:;r-.&~Elnuag~~1I<.IjZ •• ~~~±~~. 8or~.m*-·.ag~if*~.m:;r-.&~ElnuagJf~1I<

.IjZ ag 0

~Ji ag • %R ~ .vi ~J ~ • ag ~ l!!! .& ~ jIJ l!!! ihll ~ ag ~ iI,ll ~ ff ~ 4 5 d B A (~fl'j ¥ lii ~ j[(HSR( ~ is ill ~:lt ag jj!l tt» 0

$ ill fir ~ Jiii I l1il ~ • jij! ~ ~ :t.l m 51 i'Ji • !ill ag 11< .IjZ ag m M :;r- :t tim. ~~~W~ifH:ll!m~~ifag~~jjjj~mj[(ag~~M :;r-.m*ffMm*:;r-a.Wag.mHmili.~~agl!Jii~*~

~.*gW~l!!! •• ~~m~.~2M.*~~~~M.~ R~agn$~Y~if.JIt*. W~WI.~fF:;r-~~IIl!!M~

.~~±~~.8'1fMMag~~Il1il.~~IIl!!M$fi.lif!\%.

t!}.~'lifmlff.~o

- 8 -

]

J ]

J :1

]

]

o J ]

J ]

J o J ]

J J J J 1

6.0 *1!i 6.1 1W:li'f:

W~~~~~~.±~~*~~~~~~~.m~~~~*

&I~~M*~~WMoft*.~~~I~~~~~.~.

~~~&*~~~~2-. ~~~~m~~ft~t$ffi~~

a.~*.~~*1!i .• ~~B~ •• fi-~*~~.M~ & •• -~~fi~o®.~~~m~~.~BSM.~~. lt~.i;fMi~~m~o

~.-~ .• ~~Bft~~5~~~.8~fi~.I~. ®~ .I~ft~~~~&~~M~~~~~oft*.~~R~~

ft7~*~~.~.~.ffi~~~ill~*1!i&ft~mAO~~

II\fti*1!i~~~o

~ILI1Hf~Mi~MJE. iFj:lllJ~1'*~l'fIlii20%. ~~&:'.~

~ J.i. !Ill (E P D) & • IHllH A F D HI§ ~ $ r, . tl\ ill f.E iiiJ ~ ~ ~ ~ • M! •• ~~:M7m1JDw,i&~. iFj'E~&EPDMftlJJE~*~~~. M •• ft~ •• ~.fi~.~M •• ~~~o

J.i.~.fi~~~~fi. w,.~.~~*.~~.**1!i~

~~.~~o±~~.~.~~*~.~~~m ( •• ~~ ~W~~~). B~~~.~~~~mw,&w.~.~*.o

ft*. ffim.&M*~~~ •• ~*~~~~~ •. w,m. * ~ M W! l11! ftlJ ~ fJilJ ~ W §M "M * •• ~ lli! ita: ~ ~. pg Ml * Vlf &ill**Vlf~~.~&~"B~W,lt~o •• ~M*~OO. ill~~E.M.~.~~.m~.~Mm~~~~no~~

Mm~~~/~M~~~SE.M~~~o

a7~.*~M~Wgl11!~~~ti*~.~~m~~w,.fi.

B~~.WM •• ~.~.~A~~~~~~~~~*~~o

- 9 -

J l l --]

[]

]

-]

n ]

]

]

J J o ]

J ]

]

J J -1

6.1 ltiJ6I1'i1 iN ~ iQ :jf :fi i)!j m m. m ifij J:: ilL j!lj ~ ~ It t!il l?Ii Ji II ~ - 9 M P D 0

m~.~ltt!il~1'i1~~m~~~~~~~~*ffi~~G.~o

~~~~m.~-.ffi.~~*ffi~~G~.~~~~~~

¥u~~o iN~*-'jZ]j¥UjlUIJJ::m90%. P.!iJ6I1'i1if.1¥l.i:; ~ftp'!iJ6~~~*. ~ftp'!iJ6I~~.~m~.~p.!~~o

p'!w~iJ6~±~a~-~~p~~mJ::~~.w;~~m~

W~!JI!J~~II\f. p'!iJ6I1'i1~.illliYo

§.~* •• ~~m.~ifijJ::~ •. ~~~~~.~~~~_ !iT( :fi ~ l?Ii Ji ~ * 1-\,Hm 0

~~.~fi~ •. M.~-~mft~ •• ~.M~.1'i18 . • ~~~ ••••. M.~~±*I1'i1~~~~ •. ~ •• m.;~:jfm.lI\f .•• ¥~ifij.~&X~.M~o

~W~~M~.~m.~fi~ •. *.~~~~.W~o~ miJ!ij.~.Jf~ltj[~*.~ (i'0500*llI!) ii1iJilG~*~IL7J

~llI!MftJf.~ii1iJilGmm~B.mJi~o

iN~~~.~ ••• ~:jfm.~fiifijJ::~.II\f. M.ft~~ ~ •• &~ •• ~fiifij.~~.H~o.~.~.~~.~ fi~.~~j[~~~ifij.~~~ •. ~B~~ •• ~.N~ • m- tU W A F D ~ fr M ~ ~ . ~ iiIV • fo.i1i * •• IfiJ A F D & E P D ~ ~ ~ 0

~iiIV.M~.~~~.~~~ifijiIL~~~~ft-~m~iIL~

~. ~~. ~m •• ~-~ltt!ilm~iIL~~.mm~m.~. ltiJ6I1'i1.W~&M.iIL~II\fM~m •• ff •• ~m.o

- 10 -

-]

J ]

l ]

J ]

n J J ]

J J o o J ]

J J J I

R~.8I~~O~~fim~~.WME.~ •• I~&M 8 !:',] }f ~ I ~ N :;r; li' sI ~ * it ~ ID ~ 0 JP( M 8 ffil §. ID ~ & *ffi~.a~n. ID~.li'.8~~*~. ffil*ffiMli'.A m~. &m~~~~.JP(~~~.a~o

~~.M~JP(}f~~mAc~.~B~~.OO •. oo.m~ • ~ • ~J ~ ~ im m ~ ~ (Efl i!El) 0 M till & M {ilJ I ~ N nU;i :@

~~ijHjo

M8~~*&.m~~wa*ffi&~~.I~~~~~m._

~~~~~~:;r;~~Wo~~.~~*~~W~I~~~.

~.~~~~* ••• ~R~~I~.JP(.~~~~.~~ Jlt~Wo

9.1 ~{t;1J$

.D&m~~W~~~~.JP(~1J$.fi~

·~~}f~~M8~I&~~M~~~m~~&.D~~Wo

·~~.}f~E~ •• fim~&.U.fi~~o • f.(;j. ~ :;r; ~ ~ W ~ W< :jj;j sI 0

~*.±*I~~~±hI~.Nli'.wn.W~E~.~

*M&~~~m~~*~~A~m~~~o

- 11 -

]

]

J !]

J ,]

J o iJ ]

]

]

J [J

J ]

J ]

J J -1

9 • 2 ± J\! IbHBi! J\! : IfI!ftI1f~m : ·~~~~~&ft~~~~±J\!m~~~~1f~M~M~~

~m~1JDm~..t~JI!PS ;

·ft~~~~±~m~~~~~~~~m~~M~~.mE

.. :tJll ;)fHll~ ~ ~ :1* JiJG fif 11[ ~ m ~ iH' ;

·m~~*~~~~. ~~~~~~~~m~~M~~~~

~m~~w;

·~~~ili~E~:tJllB~~~~m~JiJG@1I[~w. ~ft.~

~~~~&~m~E~:tJllti~~~m~~w~~~ft~;

·~~~m.~M~~mfi;mE~:tJll~~~~1fm.~~

§~~JiJGo

1 0 • 0 11 ss !filII 1Wi f91J

~ j'iin~ W! J5!! ffilJ

-~1f~~~~~-w~m. ~*m~~

*M~~.ft ••• (~~ft~~~~ ~J;\J~~:?~) • ~~il,jl&! r~m;'i!im;fl

~~~ J 0

-~1f~~~ft:tJll~~fi ••. ~ili-. W5M ••• (.~1I[~ftWili~.* ij;) • ~ J5!! ffilH~ iiJ! ~ • 0

-~1f~~~~~."M •• I~ij;·~ SS~~~J~m~~"Best Practicable

Heans" (BPH) ~ m. ~ 0

- ~lffhUM&A

- 12 -

.~:I*f1!:~:I!!!

&

ElltiA

.~:I*f1!:~:I!!!

& E i!U~

1 ]

J l o J l o J J ]

J o o J J J J ]

J rl

Ui {f - &:dJUm f* Ill!! ra' I 1li! ilHj ;Z Du B ilHj M ~ . • 11!itlHHUI!!

~m.~a_~~ •• ili~~{fN~~ :f'l€ ~ 1li! It 0

-~~~M~~.~m~~~M.m~~ •• m~a_ iI!! ~ 0

-~~&I.m~~~~~.*.~~a •• m~a_ (45dBA & (50dBA (~:IIl:f'l€ jlf HSR a 1t) 0

-il~m~EM&A •• m~a_ -~~~~~MM.fiI1li!Du.A_~ ••• m~a_

B Ili(f·HHil! ~ {f ltf ~ ~iE 0

~~

-~.$*a_~*Du.~~A~~OO~ •• m~a_ !!I!a_MEI3-~~i!&nt.!'i.iUi~~o

- ~.$* ~ a _ a * Du & ~ A ~~!!I!1&. ..m~a_

a_~*B~~.~~~~*~~ili;z

Du . &:' _ Jt 51 A ~ * !<Iii !!I! * ffi Jt ~j !<Iii !!I! 0

-~.$*a_~*1&~&*M~ooOO~ •• m~a_ Du.M~WOO~~~B~~M~~~n

it DU Q.( !<Iii !!I! 0

- ~.m~EM&AMm1E~M~1li!}jO~Bil •• m~a_

* -~~~tt~~.~.~tt~m~EmM •• m~a_

- ~. ~ *!<Iii!!l! l4!i ~ ~ fiUli ~ fii ~ 7HI HD ••• ~ a_ &EPDM rnJ ~ ~ 0

-~.~a~~~.~*!<Iii!!l!l4!i&~*!<Iii •• m~a_ !!I!ffi~M~MMm1E~Bil~o

- 13 -

u o [

n D o C II o [.

[

o [1

[:

[I [I

L [

U U

-.. --~

I

-m.~~~~~~MW~~~M~~. .li1i~f!!:.it!!

it!! J.:.HHIHf 0

-m.MW~.it!!~~~M*~~~Ou~ itllli ~ f!!: • it!! 51 A M * ~ l1I! ~ ,IHr ~ l1I! 0

-m.ffw~~~.~.*I~~~.it!! Mli1i_f!!:.it!! JJUHIHf 0

-m.-W~~~II8~M~l1I!&~m Bli1i_f!!:.it!! m iill / I!JHtHI!I ~ ~ • it!! ill :$HH'f 0

-m.~~~~~~~~~~.~n~~ jlli1i_f!!:.it!! ~~±nHfIlID1t1JDIo i

-m.jlli1i.it!!*~~~~~~~~o iili1i~f!!:.it!!

-m.~.it!!~*&*r~~~OuJm~

AFD.EPD&ifP.~o

- m.~ff~EM&AMm.~~~~~~~BiI iili1i_f!!:.it!! ~o

- 14 -