sri: colombo port expansion project · 3.6 the notice board to educate fishermen on barge movement...

Environmental Monitoring Report

This repo rt h as be en sub mitted to ADB by the Mi nistry of Port s and Aviati on and i s m ade pu blicly available in accordance with ADB’s p ublic communications policy (2005). It doe s not n ecessarily reflect the views of ADB.

Project Number: 39431 May 2010

SRI: Colombo Port Expansion Project

Prepared by Scott Wilson, Ltd.

Colombo, Sri Lanka

For Ministry of Ports and Aviation Sri Lanka Ports Authority

SRI LANKA PORTS AUTHORITY

COLOMBO PORT EXPANSION PROJECT

HARBOUR INFRASTRUCTURE WORKS

ENGINEER’S REPRESENTATIVE’S

BIANNUAL

ENVIRONMENTAL MONITORING REPORT

JULY TO DECEMBER 2009

COLOMBO PORT EXPANSION PROJECTBI-ANNUAL ENVIRONMENTAL MONITORING REPORTJULY TO DECEMBER 2009

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TABLE OF CONTENTS

EXECUTIVE SUMMARY ..................................................................................................31. INTRODUCTION .......................................................................................................42. PROJECT DESCRIPTION ........................................................................................5

2.1 Current Progress of Works 52.2. Project Organisation 62.3. Status of Relevant Permits and Licenses 6

3. COMPLIANCE MONITORING ..................................................................................73.1. Site Audit Based Monitoring 8

4. IMPACT CONFIRMATION MONITORING ..............................................................304.1 Monitoring Requirements 314.2 Permissible or Action Limits 324.3 Monitoring Results 32

5. ISSUES ...................................................................................................................395.1 Lapses in mitigation 395.2 Complaints 39

6. CONCLUSIONS ......................................................................................................41

List of Tables2.1 Key officers related to environmental management of Works 62.2 Environmental permits & licenses 63.1 The schedule of site audit events 83.2 Environmental monitoring requirements covered by site audits 93.3 Summary of meetings held with relevant parties and key concerns in the period 193.4 Environmental monitoring requirements stipulated by environmental permits 223.5 Summary of noise level monitoring results at LoP 223.6 Summary of ambiant air quality monitoring results at LoP 233.7 Summary of noise level monitoring results at Taegil quarry 253.8 Summary of ambiant air quality monitoring results at Taegil quarry 263.9 The probability of exceeding stipulated level at sensitive recievers in 2nd half, 2009 284.1 Monitoring requirements 314.2 Summary of ambiant air quality monitoring results at Port site 324.3 Summary of noise level monitoring results at Port site 324.4 The summary of settlement monitoring results 385.1 Summary of concerns and mitigation adopted 395.2 Summary of complaints received 395.3 Action taken on complaints 40

List of Figures3.1 A sample of daily dredging and reclamation location map developed using AIS records 113.2 The approved haulage route; LoP and Port site and plotted navigation paths 153.3 The graphical summary of site audit based monthly beach status monitoring results 203.4 Noise and air quality monitoring locations at LoP, Wadduwa 243.5 The graphical summary of CCD stipulated beach profile monitoring results 253.6 Noise and air quality monitoring locations at LoP, Wadduwa 273.7 The summary of air blast over pressure levels in the second half, 2009 283.8 The summary of ground vibration levels in the second half, 2009 294.1 Air quality, noise and vibration monitoring locations at Port site 334.2 Water quality, sediment quality and suspended sediment concentration

monitoring locations at Port site 344.3 Daily average suspended sediment concentration in second half, 2009 37


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List of Photographs3.1 Duly maintained existing outfall from SLPA, SL Navy premises to be upgraded 123.2 Duly maintained dust control arrangements of the batching plants 123.3 Handling asbestos contaminated demolished waste under stipulations of CEA 123.4 Traffic control arrangements 133.5 Warning signs and lights on the barges 143.6 The notice board to educate fishermen on barge movement schedule 143.7 Immediate protection of LoP North beach at Ch. 150m and follow up nourishment 16

3.8 Dredging of LoP basin by two pumps dredger and on-shore stock pilling 163.9 The sand stock pile at Ch. 250 m, filled jumbo bags and geo-tube material163.10 Preparing for installation (left) of geo tube and enriched beach after completion 173.11(a) Undisturbed fishing boat landing during geo-tube installation 173.11(b) Undisturbed fishing boat landing at completion of geo-tube installation

and nourishment 173.12 The duly maintained river banks at the each border of quarry site 184.1 Historical monument handed over to the Archeological Department 38


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Executive Summary

To ensure the environmental m anagement of Works is implemented and m aintained in ac cordance with the r equirements of Coastal Conservation D epartment (CCD), Central Environmental A uthority(CEA) and Asian D evelopment B ank (ADB), t he environmental impacts and t he effectiveness of environmental mitigation are monitored by Hyundai Engineering & Construction Co., Ltd. (HDEC); the Contractor under t he s upervision of , Scott Wilson Lt d. (SW) the Engineer and the overview of the Client, Sri Lanka Ports Authority (SLPA). The procedural and institutional arrangements in this regard are des cribed in t he E nvironmental Management P lan ( EMP) for the W orks, pr epared b y the Contractor, accepted by Engineer and submitted to CCD through SLPA.

During the reporting period three trailer suction hopper dredgers (TSHD) dredged the Port approach channel and placed surcharge by bottom dumping sand for the main breakwater and secondary break water construction and completion of CWA reclamation.

Dredging for the sub-sea oil pipe line trench is in progress and boulder removal by clam shell grab is completed.

The quarry run core of the main break water is placed to Ch 1040m. The main breakwater from is protected with 5 to 12 t armour up to Ch 910m and with Core Loc TM

• Using 100% of dredged sand for reclamation, with no off site disposal and limited rainbowing

from Ch. 310 to 570m .

Haulage of quarry products through sea route from LoP at Wadduwa to Colombo is being continuedat a rolling traffic of 10 to 12 barge a day. Limited haulage of quarry products to the Port through land routes is in progress.

Quarry r ock i s haul ed t o the LO P through land r outes. R ock ar mour and quar ry r un production continues at the Contractor’s main quarry near Kaluthara.

The Environmental Management of the Works has been implemented and includes sequential steps to avoid, reduce and mitigate likely consequences and a comprehensive monitoring scheme ensuring high level of environmental compliances.

The key environmental mitigations during reporting period are:-

• Implementing a site waste management scheme 100% curtailing open dumping and burring• Managed hazardous wastes securely as per the regulations• Ensure protection of historical monuments and uninterrupted discharge from existing outfalls• Imposing speed limits on loaded trucks and the site transportation• Employing traffic control men and infrastructures for heavy vehicle traffic management• Controlling fugitive and point source (batching plant, metal crusher) dust emission• Close monitoring of LoP beach status and effective replenishment• Minimize impacts on fishers and substantially assist them for disturbed living • Continuous monitoring of air and ground vibration impacts on dwellings at quarry site • Clearing quarry phase regularly and effective control of blasting to minimize fly rocks

Compliance m onitoring ba sed on s ite audit observations, continues confirmed t hrough r esults ofimpact m easurements and indicates the e nvironmental m anagement of t he Works i s maintained t o the s tandards expected by t he C CD a nd ADB during the reporting per iod; f rom J uly t o December, 2009.


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1. INTRODUCTION

BackgroundThe A sian D evelopment B ank ( ADB) provides the funding to t he Government of t he D emocratic Republic of Sri Lanka to construct the infrastructure for the Harbour Infrastructure Works (HIW) under the Colombo Port Expansion Project (CPEP) [Formerly known as the Colombo South Harbour (CSH) Project].

The Sri Lanka Ports Authority (SLPA) is the Executing Agency (EA) whilst Scott Wilson Limited (SW) and H yundai D evelopment E ngineering Corporation (HDEC) are respectively t he s upervisingEngineer and the Contractor.

The C oast C onservation D epartment ( CCD), the pr oject appr oving age ncy, g ranted approval f or commencement of Works based on Environmental Impact Assessment carried out in 2005. The CCDchairs the Environmental Monitoring C ommittee ( EMC), which scrutinizes the ef fectiveness of theenvironmental mitigation of the Works.

Environmental Monitoring RequirementsThe E nvironmental Ma nagement P lan ( EMP), the key t ool us ed i n environmental impact m itigation and m onitoring, has been developed t o ens ure t he Works ar e i mplemented and m aintained in accordance with the provisions and r equirements of the Coast Conservation Act No 57 of 1981, the National Environmental Act No 47 of 1987 and ADB’s environmental policy (2002).

HDEC implements the EMP u nder t he g uidance and s upervision of SW, w hilst the process is overseen by the SLPA, who report to CCD and ADB.

Scope of the ReportIn gener al the m itigations a re defined i n t he C ontractor’s E MP and s pontaneous m easures are adopted to rectify un-foreseen impacts; and are monitored through routine site audits and compliance and impact monitoring

The results of environmental compliance and impact confirmation monitoring together with complaints, non-compliances and responses are monitored and recorded by SW.

This biannual report, presents an o verview of t he en vironmental m itigation an d m onitoring perspectives, covering July to December 2009, is s ubmitted t o the SL PA as per clause 8. x iv of appendix B of “Contract for Consultants’ Services”.

The S LPA s ubmits t his r eport on s ix m onthly basis to t he A DB a nd C CD ( EMC), as per t he l oan covenant number 12 of the agreement of loan no. ADB 2319-SRI.


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2. PROJECT DESCRIPTION

2.1 Current Progress of Works

The Works c ommenced o n 11 April 2008, and have bee n i n progress f or 21 months out of t he 48months Contract period. The works in progress in the reporting period are summarized below :-

2.1.1 Colombo South Harbour Site

Dredging and reclamationDredging of the Port approach channel and sub-sea oil p ipeline trench are being carried out mainly using t hree trailer s uction hop per dr edgers [ TSHDs] the Goryo 4 Ho, Goryo 6 Ho and the Prof Gorjonov. T he 20m3 grab dr edger Pandora is engaged i n clearing Port a pproach channel and reef areas on the sub marine pipe line route.

A volume of 3.5 million m3 has been dredged within this 6 month reporting period. The surcharge and reclamation is placed in the breakwater below -7.0mLWOST by bottom dumping dredged sand. Thereclamation of Contractors Working Area (CWA) is completed and reclamation of sand beach behind the breakwater continues.

Breakwater constructionThe breakwater toe t rench has be en extending o ut t o Ch 1,040 m and 1.4 million m3 sand and 113,000 m3 quarry r ock for c onstruction of quarry run c ore up t o Ch 1,380 m l ength of main breakwater, were placed in the reporting period. The breakwater has been now protected by 5 to 12 trock armour up to Ch 910 m and by Core Loc TM concrete armour units from at Ch 310 to Ch 570 m.

The sand fill foundation of the secondary breakwater adjoining the pilot station is being placed.

Dredging for re-routing sub sea oil pipe lineThe Goryo 4 Ho continues dredging for the sub-sea oil pipeline r oute. The grab dredger c leared aboulder heap on the sea bed and completed trench dredging a t the land fall area of the submarine pipeline route. Transportation and stock piling of quarry rockLimited h aulage f rom appr oved quarry r ock sources outside Colombo is be ing c ontinued by l and routes at an increased rate to match the current progress of Works. A cumulative volume of 320,000m3 of quar ry r ock and r ock amour ha s been brought to S ite using 10 m3 dum p t rucks. Sea r oute transportation by barges continues bringing a cumulative 480,000 m3 of rock from Wadduwa LoP to the Site. Transported materials are being stockpiled in the CWA, adjoining the SAGT terminal or being directly dumped for breakwater construction.

2.1.2 External arrangements for material supply

Load out PointThe dredging of the LoP basin is being continued. The barge deliveries continue at a r ate of 4 t o 6 loaded barges a day except during rough sea condition periods.A volume of 270,000 m3 of graded rock amour and quarry run were added to the existing stockpiles at the LoP.

QuarryingBlasting operations continue at the Contractor’s main quarry (Taegil quarry) at Nehainna, producing mainly rock armour and quarry run.A volume of 380,000 m3 of quarry pr oducts i ncluding quar ry r un, r ock amour and road metal wereproduced from this quarry during the reporting period.Quarry products from three other quarries located within Dodangoda Division also provide material for the Works. A volume of 60,000 m3 was supplied from these quarries during the reporting period.


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Haulage of quarry products to LoPQuarry products ar e hau led t o the LOP f rom the main Q uarry a nd t hree ot her local quarries using dump trucks. The haulage distance is around 21km. The daily average number of truck loads variesfrom 400 to 150 from all the quarries to LoP during this period.

2.2. Project Organisation

The project organization for environmental management remains unchanged from the Annex I of “Bi-annual Environmental Monitoring Report (BEMR); June to December, 2008”.The key o fficers in volved in the environmental m anagement of the Works and their par ticulars ar e given in Table 2.1 below;

Table 2.1: Key Officers Related to Environmental Management of the Works

No. Designation Name Mobile No

SLPA

1 Deputy Project Director Susantha Abeysiriwadana 0715346554

2 Environmental Consultant Tissa Fernando 0777394405

SW

3 Chief Resident Engineer Peter Neville-Jones 0774747560

4 Environmentalist Padmasiri Moonamale 0772907615

HDEC

5 Project Director Hyung Kim 0774711791

6 Environmental Tem Leader Chaminda Thilakaratne 0715428255

2.3. Status of Relevant Permits and Licenses

Particulars of relevant environmental licenses are given in the Table 2.2 below;

Table 2.2: Environmental Permits & Licenses

No. Authority Permit Details Operational activity

1 Coast Conservation Department

CCD permit; P/07/62 CPEP construction

2 CCD permit; P/09/209 Construction & operation of LoP

3Central Environmental Authority

EPL; 01921 (R1) Quarry operations, main quarry, Neheinna

4License for scheduled (Hazardous) waste management; 0024/HWM/2009

Disposal of asbestos contaminated demolition wastes

5 Geological Survey and Mines Bureau Mining License (ML); IML/A/HO/2371 Quarry operations, main quarry,

Nehinna, Dodangoda


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3. COMPLIANCE MONITORING

Compliance monitoring i s required to e nsure t hat t he environmental m itigations are ef fectively adopted and any unforeseen impacts are duly addressed.

The relevant monitoring activities, locations and f requencies related to compliance monitoring withinthe reporting period are given in Annex III.

Compliance m onitoring at the Works is mainly implemented through site inspection and m easuring environmental impact as described in Section 3.1 and 3.2 respectively;


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3.1. Site Audit Based Monitoring

Site aud it based monitoring is conducted by observations, and includes site v isits, meetings, record keeping and r eporting t o ev aluate t he effectiveness of mitigation at S ite l evel, conducted in accordance w ith the s chedule as g iven in t he Table 3. 1 below. The s chedule was further revised, considering the significance of environmental consequences during the last 15 months and practical implementation aspects.

Table 3.1: The Schedule of Site Audit Events

No. Means Frequency Purpose/ Action Agency

1 Site surveillance ContinuouslyPromote awareness of environmental/ safety procedures among workers and sub-contractors via continual communications

Contractor

2 Site surveillance Continuously Daily site monitoring records Contractor

3 Site surveillance Continuously Impact monitoring records Contractor

4 Site inspection Continuously Daily monitoring records Engineer

5 Regular Site Inspection

3 times/ Month

Site supervision by ETL and face to face dialog with SMs and Sub Contractors Contractor

6 Ad-hoc Site Audit 12 times/Year

Compliance Monitoring by EER and Face-to-face communication between ETL, SMs Engineer

7Environment Monitoring Record

WeeklyImpact Monitoring Record to Engineer to evaluate water quality impacts and maintain database.

Contractor

8Regular Site Environmental Audit

MonthlySite Monitoring jointly by EER and ETL with face-to-face communication between SMs &Sub contractors

Engineer &

Contractor

9 Monthly EMR (MEMR) Monthly

Impact & Compliance Monitoring Report tothe Engineer two weeks before monthly meeting by Contractor.MEMR with comments (on compliance and impact monitoring) to SLPA by the Engineer. (as given in # 10).

Contractor&

Engineer

10 Environmental Progress meeting Monthly

Presentation of summary of MEMR and follow up actions of previous meeting by ETL/ Con. (ie. Significant impacts, social issues and corrective measures etc.).Submission of MEMR with Engineer’scomments by EER/ Engineer to EC/ SLPA.

Contractor

11 Ad-hoc Meeting When necessary

Site Monitoring and face-to-face communications between EER, SMs, ETLand EC/ Contractor and Local regulatory agencies/ community representatives when any emergency events occur.

Contractor

12Environmental Monitoring Report

QuarterlyPrepare and submit by CRE/ Engineer to the EC/ SL PA, w ho submit with c omments t o CCD & ADB

Engineer

13 Additional Specific Reports Varies

Long term impact monitoring reports (Table 3draft EMP) SLPA

SRE: Senior Resident Engineer, EER: Engineer’s Environmental Representative, ETL: Environment Team Leader, SM: Section Manager, EC: Environmental Consultant.


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3.1.1 Site Audit: monitoring requirements

The specified monitoring requirements for the main operational activities are summarized in Table 3.2monitoring and mitigations. The m onitoring allows spontaneous i mpacts to be i dentified a nd immediately addressed through appropriate mitigation.

Table 3.2: Environmental Monitoring Requirements Covered by Site Audits

No. Operational Activity Mitigation/ monitoring requirement

1 Dredging & Reclamation

Adopt b est pr actice dr edging m ethods an d m aintain equipment t o minimize suspended solid plume formation:Watching br ief of wreck mat erial t o ensure historic ar tifacts ar e separately identified and protectedControl s urface w ater r unoff f rom r eclamation ar eas t o av oid w ater pollutionMaintain un-interrupted flow from existing storm water outfalls

2

Breakwater construction, Site management & operations

Minimize dust, noise and vibration

Management of s olid wastes preventing environmental p ollution complying with local regulationsManagement of waste oil complying with local regulationsManagement of sewage and waste water preventing water pollutionAdopt adequate safety measures

3 Quarrying and haulage

Control dust, no ise, vibration and f ly r ocks t o t he s tipulated l evels i n quarry operations in compliance with local regulationsMinimize dus t, no ise, vibration and adopt a dequate s afety measures in quarried rock haulage along land routes as per local regulations, Site management (beach protection/ nourishment)and pollution control at Load out Point (LoP) in compliance with relevant stipulations Minimize impacts on fisheries, stick to approved route and adopt relevant safety measures at sea route quarried rock haulage in compliance with CCD, SL Navy and Harbour Master’s stipulations

3.1.2 Results of Site Audits

The key site auditing was undertaken by 15 main site inspections, 6 Environmental Monthly Meetings to review the Contractor’s monthly environmental report and site level environmental concerns and 23meetings w ith relevant governmental Authorities and local communities in the reporting per iod. The following environmental management measures were implemented during this period.

Colombo South Harbour Site

Dredging and reclamation1) The dredged material was discharged into reclamation and surcharge with occasional offsite

disposal restricted to SLPA ap proved offshore dum ping s ite to minimize impacts upon theexternal ecosystems.

2) The i ntended un der-water blasting w as kept t o a minimum and a c lamshell grab w as deployed for the removal of “loose rocks” in the pipeline t rench bed to minimize impacts onbenthic and pelagic flora and fauna.

3) The dredging was restricted to the required zones such as the Harbour access channel andpipe l ine t rench with c lose monitoring t hrough the Automatic I nformation S ystem ( AIS) available a t the marine c ontrol r oom, t o m inimize impacts upon t he external ec osystems(Figure 3.1: a record of AIS).

4) Reclamation was placed by sand discharge through a floating pipeline or by bottom dumpingby TSHD and rainbowing minimized to avoid releasing suspended sediments.

5) The existing storm water drainage outfalls are protected to maintain uninterrupted f low, untilthe permanent drainage network is provided (Picture 3.1).


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Breakwater construction and Site managementThe m itigations i ncorporated dur ing breakwater, CWA and t emporary f acilities construction andgeneral site operations are as follows:-1) Induction for heavy machinery/ vehicle operators on best practices to minimize dust and noise

emanating from heavy vehicle movement.2) Water sprinkling on surface of transportation routes and soil exposed areas in IWA and CWA

to control dust.3) The dust prevention canopy of main batching plant at CWA and s tand by p lant at IWA, are

well m aintained to c ontrol poi nt s ource dus t em issions and excessive n oise em anation(Picture 3.2).

4) Solid w astes ge nerated at Works ar e continuously collected an d d isposed t hrough a third party ag ency, which o perates u nder t he approval of Mar ine Environmental Prevention Authority (MEPA) and Colombo Municipal Council (CMC).Construction wastes are collected at 2 locations and domestic wastes are collected at 5 main locations in t he s ite. The w aste disposer t ransfers the non-recyclable por tion to th e Kollonnawa waste disposal facility of CMC.The c onstruction wastes c ontaminated with ha zardous material ar e s ource s egregated a nd handled with due care (Picture 3.3) under the stipulations of CEA (Annex I).

5) Sewage and domestic effluents generated at the site are discharged in to a well maintained net work of septic tanks and s oakage pits located within the premises. Arrangements are in place for pumping out sewage using a gully to road tankers.

6) Storm water drainage network is being constructed simultaneously with CWA reclamation. 7) Waste oil generated from marine and land operations is duly collected, safely stored and sold

to authorized external parties under the approval of MEPA; the relevant regulatory agency ofSri Lanka.

8) The arrangements to retain catastrophic spillage and additional protection (barricade) against traffic impact at the Oil Tank in the site are duly maintained.

9) The “ Battenberg B attery” w ith b uilt h eritage value as gi ven i n t he E nvironmental Impact Assessment Report-EIAR- (pp 3-26, EIAR-CPEP, Scott Wilson Ltd.) has been cordonned off for protection and is being continuously monitored.

10) The road signs along side access road to the IWA and CWA are duly maintained and trained traffic control flagmen are in place to control speed, prevent interruptions to general port traffic and accidents (Picture 3.4).


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Figure 3 .1: A sample o f daily d redging an d reclamation l ocation m ap de veloped us ing A IS records.


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Picture 3.1: Duly maintained existing outfall from SLPA, SL Navy premises to be upgraded.

Picture 3. 2: Duly mai ntained dus t control arrangements of the batching plants

Picture 3.3: Handling asbestos contaminated demolished waste under stipulations of CEA


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LoP and CSH

Haulage of Quarry RockLand route haulageMitigations are being continued to avoid and minimize social impacts, nuisance to public in particulardue t o fugitive dust emissions, vibration a nd excessive n oise ar ising from land transportation as follows:1) The q uarry r ock transportation continued by the C ontractor follows the traffic m anagement

plan.2) Top side of loaded trucks is covered to prevent dust emission and back sides are protected to

prevent fall of material.3) Drivers are educated on good driving practices and their compliance is monitored. 4) Relevant hau l roads ar e duly maintained in ac cordance with the requirements of t he road

authority and local authorities concerned.5) Surface wetting of the haul roads is continued during dry days. Two water sprinkling bowzers

at LoP and Taegil quarry are deployed full time. Sea Route haulageMitigations implemented on a trial basis were improved incorporating the comments of fishing society, Fisheries D epartment and C CD t o ef fectively address r eal gr ound l evel c oncerns pr actically by t he Contractor and are now being implemented:1) A continuous dialog with CCD, Fisheries Department and F ishing Society continued through

fortnightly m eetings held at F isheries D epartment office, K aluthara or at t he s ite on arequirement basis. Ten meetings/ visits were conducted within the reporting period.

2) A work arrangement is in place to entertain, investigate and settle complaints by F ishermen against the Contractor.

3) The i nitial s egment of barge m ovement r oute and anchorage ar ea are demarcated b y of f shore buoyancy markers with n ight t ime illumination, br eak-water en ds and bar ges ar e equipped w ith audible and v isual warning s igns/ l ights (Picture 3. 5) to ens ure t he s afety of fishermen and other sea going vessels.

4) Two notice boards along the North beach are maintained to educate f ishermen on the day’s barge movement (Picture 3.6).

5) Alterations were made to minimize fishermen’s impacts and approval of Harbour Master was obtained f or t he h aulage route f rom P ort of C olombo t o LoP, Wadduwa ( Figure 3. 2; th eapproved route and barges navigation path plotted using AIS records).Barge masters are educated to control movement within the route, which is monitored using SL Navy operated AIS facility at both ends and screen dump maps ( Figure 3.2) based on randomly selected barges or time slots, indicated in complaints (if any).These maps are incorporated to identify deviations for controlling repetition through penalizing relevant “ Tug Master/s” and al so to investigate the ac curacy of c omplaints lodged b y fishermen on damaging fishing gears.

Picture 3.4: Traffic control arrangements.


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External Operational Activities - LoP, PothupitiyaThe following mitigation measures were i mplemented during the reporting per iod to ens ure the intended out put for the Works is achieved;1) The pr ofile survey of LoP N orth beac h up t o C h 150 0m at 50m i ntervals is routinely being

conducted f or immediate identification o f the bea ch beha vior and the effectiveness of nourishment. A summary is shown in the Figure 3.3 and details are given in Annex II.

2) Beach nourishment (Pictures 3.7) placing sand dredged by pump dredger (Pictures 3.8) andtransport by land vehicles is continued. A cumulative approximate volume of 175,000 m3

3) A sand stock pile of approximate 2,000 m3 was maintained on shore at Ch 250m on the North beach with the guidance of CCD, to combat further seasonal erosion dur ing the forthcoming SW Monsoon (Pictures 3.9).

was placed within the reporting period.

4) The C ontractor’s emergency be ach pr otection procedure b y placing 50 0 Kg “jumbo” s and bags enveloped with “geo textile” was effective in avoiding significant property damage during the high swell wave condition that caused sever erosion in November 2009 (Pictures 3.7).

5) The Contractor obtained approval of CCD for placing “geo tubes” for retaining the nourished segment of beac h under strong wave c limates w hilst av oiding d isturbance f or t he f ishing community due to the protection structures. Experts arrived, materials imported and the f irst tube was placed for the first time in the history of coast protection in Sri Lanka (Pictures 3.10)and machineries are now being mobilized to commence the installation of the second tube.

6) The monthly routine LoP North beach profile from Ch 0m to Ch 1,500m in November confirms the beach stretch is substantially stable.

Picture 3.5: W arning s igns and lights on the barges.

Picture 3. 6: T he not iceboard t o ed ucate f ishermen on bar ge m ovement schedule.


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Figure 3.2: The approved haulage route; LoP and Port site and plotted navigation paths.

Date: 11th September, 2009A – Barge No. AT 1605 & DB 2011B – Barge No. AT 2433 & GBS 230-70C – Barge No. AT 1604 & DB 1503D – Barge No. AT 2432 & DB 3013


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Picture 3.7: Immediate protection of LoP North beach at Ch. 150m and follow up nourishment.

Picture 3.8: Dredging of LoP basin by two pumps dredger and on-shore stock pilling.

Picture 3.9: The sand stock pile at Ch. 250 m, filled jumbo bags and geo-tube material.


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Picture 3.10: Preparing for installation (left) of geo tube and enriched beach after completion.

Picture 3.11 (a): Undisturbed fishing boat landing during geo-tube installation.

Picture 3.11 (b): Undisturbed fishing boat landing at completion of geo-tube installation and nourishment.


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Picture 3.13: T he b enches on the quarry phase.

Picture 3.12: The duly maintained river banks at the each border of quarry site.


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7) The pr ocedure ( Annex IV of BEMR-June to D ecember 2 008) to deal with t he v ulnerable community groups and stake holder agencies is implemented as summarized in Table 3.3.

Table 3.3: Summary of meetings held with relevant parties and key concerns in the periodNo. Parties participated Meetings/

Quarter Main concerns

1 SLN, SLPA, HDEC, SW 04 Site security and safety2 PRDA, SLPA, HDEC, SW 06 Road maintenance and Dust control3 CCD, SLPA, HDEC, SW 03 Water qua lity m onitoring a nd Beach

nourishment at LoP4 CCD, FD, FS, SLPA, HDEC, SW 15 Enhancing warning s ignal, addressing

issue r aised by f ishing community,update fishermen on LoP operations and compensating for damaged fishing gear

SLN: S ri Lank a N avy, F D: F isheries D epartment, F S: F isheries Society-Pothupitiya ( LoP ar ea), P RDA: P rovincial Road development Authority

8) SLR 350,000 was pa id f or dam aged f ishing gears to r e-organize l ost i nfrastructure in 11cases and s ubstantial pa yment f or disturbed “ small ent angle n et f ishing” a t geo -tube installation and SLR one million was paid as substantial lively-hood support due to disturbed fishing dur ing the event of rapid beach protection to combat aggressive sea erosion. These payments were made under the recommendation of CCD and FD (at the forum given underItem 4 of Table 3.3).

9) Surface wetting of the active areas of the LoP including the internal transportation routes and trucks before unloading, is continued to mitigate excessive dust emission.


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Figure 3.3: The graphical summary of site audit based monthly beach status monitoring results.


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Quarry rock productionThe following key mitigations are being continued for quarry rock production by the Contractor.1) Approval f rom Environmental Authority and GSMB permit is a pre-requisite in the outsource

purchasing of quarry rock.2) The comprehensive warning s ignaling scheme including both visual and audio warnings are

continuously being implemented at the Taegil quarry, Dodangoda.3) The s ilt t raps bui lt t o pr event s iltation of do wnstream f arm lands from surface r un of f

transported quarry dust and soil debris are being duly maintained.4) The earth bund was constructed along the edge of Eastern water stream and bank of Western

water s tream and strengthened with bo lder pac king t o pr event di sturbing water f low an d siltation (Picture 3.12).

5) The “Bench blasting” is continued to minimize impacts from fly rocks, ground vibration and air blast over pressure (Picture 3.13).

6) Daily blasting records are maintained to ensure each blast is done as specified by regulatory Authorities.

7) Surface wetting and operating a water sprinkler coupled with cone crusher at the main quarry.


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3.2 Impact Measurement Based Monitoring

This section covers the measuring of the magnitude of en vironmental impacts b y s pecialized third party a gencies t o ens ure compliance w ith the c onditions s tipulated in t he e nvironmental per mits obtained from Government Authorities for various components of the Works (Table 2.2 in section 2).

3.2.1 Monitoring requirementsThe environmental media with the measuring parameter and specified locations as stipulated by the permits are described here. The requirements of monitoring are summarized in Table 3.4 below;

Table 3.4: Environmental monitoring requirements stipulated by environmental permitsNo. Permit & location Monitoring requirements

1 CCD permit - CSH Overall site management as described in the EIAR (Annex III)

2 CCD permit - LoPNoise, air and beach profile(parameters gi ven under t he i tem # 1. 03, 1.04, 2.02, 2.03 & 8 of Annex III)

3 EPL – Quarry Noise, air quality & ground vibration(parameters given under the item # 1.05, 2.04 & 3.02 of Annex III)

4 Mining License - Quarry Air quality & ground vibration (parameters given under the item # 1.05, 2.04 & 3.02 of Annex III)

3.2.2 Permissible limits

Permissible limits related to each parameter as s tipulated by the permits of CCD, the EPL and the Mining License are given together with the monitoring results.

3.2.3 Impact measuring results

Colombo South HarbourResults of noise, a ir and w ater qua lity, s ettlement and gr ound v ibration monitoring at t he main construction s ite; t he Colombo South Harbour are presented in the Section 4.3 of this report under “impact confirmation monitoring”.

LoP, PothupitiyaNoise, air and water quality were monitored by the National Building Research Organization (NBRO) in November 2009 and beach pr ofile m onitoring was continued b y C ontractors’ survey team w ith supervision of Consultants surveyors.

NoiseHourly c ontinuous t ime i ntegrated noise l evels were m easured at 5 m inutes i ntervals c overing Morning, Evening and Night times on 17th and 18th

Time

November, 2009 at locations L 1 and L 2 of Figure 3.4. Summary of results are as follows;

Table 3.5: Summary of noise level monitoring results at LoP

Range Measurement/ Leq dB(A) RemarksL 1 L 2 L 1; Main source L 2; Main source

Morning Maximum 63 66 Sea breeze and LoP Road vehicleMinimum 56 54 Sea breeze Train

Evening Maximum 59 58 Sea breeze Road vehicleMinimum 54 51 Sea breeze Train

Night Maximum 49 56 Train/ Sea breeze -Minimum 42 45 Sea breeze -

The LoP o perates as t he material t ransfer s tation f or t he C olombo P ort E xpansion P roject and is considered as a construction site. Hence the permissible noise level stipulated by the CEA under the provisions of Extraordinary Gazette Notification No. 924/12, 23rd May, 2009 are 75 dB (A) during day time and 50 dB (A) during night time. Therefore the operational noise levels of LoP are well below the compliance requirements.


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The LoP batching plant was not operated in the reporting period.

Air qualityAir s amples w ere c ollected f rom the s ame l ocations, L1 an d L 2 of Figure 3 .4 on 17th and 1 8th

Parameter

November, 2009 un der dry whether c ondition t o a nalyze N O2, S O2, C O an d P M10. Summary of results, are as follows (results of April are also given for comparison):-

Table 3.6: Summary of ambient air quality monitoring results at LoP

Time average

Measurement/ (micro g/ m3)Permissible level (micro g/ m3)L 1 L 2

April Nov. April Nov.SO2 1 hour 17 15 14 18 200NO2 1 hour 20 22 24 26 250CO 1 hour 10,000 9800 8,000 8,600 30,000

PM (10) 24 hours 47 40 27 21 100

The measured N O2, S O2, C O and PM10 levels ar e well b elow t he compliance r equirements stipulated by the CEA under the provisions of Extraordinary Gazette Notification No. 1562/ 22, 15th

August, 2009. No significant change in the measured air quality parameters were observed between April and November 2009.The batching plant at LoP was not operated in the reporting period.

Beach profile monitoring at LoPThe beach profiles to the North (up to 3 km) and South (up to 1 km) of the temporary breakwater at LoP w ere monitored in August, 2 009 and i n November, 20 09 as s tipulated b y CCD. I n a ddition t o these stipulations, intensive monitoring of the North beach is continued as explained in Section 3.1.2.The detailed profile monitoring results including comparison with previous measurements is given in Annex V and a summary is given in Figure 3.5.The summary indicates cumulative erosion of approximately 8500 m3 from Ch 350 m to Ch 3000 m of North beach LoP and approximately 25000 m 3 from Ch 250 m to Ch 1000 m of South beach LoP since May, 2009 to November, 2009. This indicates aggravated erosion f rom Ch 50m to near ly Ch 1000m North. The monthly beach profiles indicate aggravated erosion s ince m id October to start of November due to seasonal high swell wave climate.As explained in Section 3.1.2 with continuous beach nourishment through placing cumulative 175,000 m3 dredged sand, by trucks, maintaining buffer sand stock pile and prompt shore protection by jumbo sand bags the North beach was effectively maintained. This minimize adverse social impacts due to beach is a positive social impact.


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Figure 3.4: Noise and Air quality monitoring locations at LoP, Wadduwa.

Location DescriptionL-1 No. 81, Tsunami housing scheme, Madapothupitiya, Wadduwa (3m away from

North boundary wall of LoP land)L-2 No, 310 A, Pothupitiya, Wadduwa (About 100m away from East boundary of LoP

land)

Weigh bridge

Railway track

Access roadL-2

L-1

Sea

LoP Pear & Breakwater

Rock stock pilling area

Tsunami Houses

Office

Fuel tank

Railway Station


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Figure 3.5: The graphical summary of CCD stipulated beach profile monitoring results.

Taegil quarry, Nehinne, DodangodaNoise and air qu ality were monitored b y t he N ational B uilding R esearch O rganization ( NBRO) i n November 2009 and c ontinuous ai r an d gr ound v ibration m onitoring i s c onducted b y the T echnical Services Division (TSD) of GSMB.NoiseHourly c ontinuous t ime i ntegrated noise l evels were m easured at 5 m inutes i ntervals c overing Morning, Evening and Night times on 17th and 18th

Time

November, 2009 at locations L1 and L2 of Figure 3.6. Summary of results are as follows;

Table 3.7: Summary of noise level monitoring results at Taegil quarry

RangeMeasurement/ Leq

dB(A) Remarks

L 1 L 2 L 1; Main source L 2; Main source

Morning Maximum 53 52 Quarry and road vehicle Road vehicleMinimum 43 46 Quarry and road vehicle Road vehicle

Evening Maximum 99 58 Quarry (blasting) and road vehicle

Quarry (blasting) and road vehicle

Minimum 49 49 Quarry and road vehicle Road vehicle

Night Maximum 49 53 - -Minimum 42 42 - -

Since the Quarry is within Dodangoda Local Authority (Pradeshiya Sabha) area, the permissible noise level stipulated by the CEA under the provisions of Extraordinary Gazette Notification No. 924/12, 23rd

May, 2009 are 55 dB (A) during day time and 45 dB (A) during night time.Operational no ise measured at Location 1 exceeds the s tipulated level intermittently between 15:20hrs t o 1 5:40 hr s r eporting the a bove m aximum value. This i ntermittent exceedance is limited t o 20minutes during m ulti borehole r ock bl asting and c onsidered less s ignificant comparing with l ower noise levels within 8 operational hours from 8:00 hrs to 17:00 hrs. Instantaneous noise impact of this nature rock bl ast i s generally measured in t he “air bl ast o verpressure” l evels. T his i s c ontinuouslymonitored a nd c ontrol m easures adopted accordingly t hrough c hanging b lasting parameters. Receiving no complaint against no ise po llution from residents of L 1, confirm this exceedance does not cause a significant social impact.


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The hi gher n oise l evel o ver 5 minutes at L 2 i s du e t o the r oad v ehicle m ovements, w hich is not significant and beyond the control of the HIW Contractor.The installation of a new cone type crusher plant also shows reduction in high noise levels. Hence, in general the operational noise level of the quarry complies with the stipulated values.

Air qualityAir samples were collected from same locations; L 1 and L 2 of Figure 3.4 on 24th

Parameter

April, 2009 under dry weather condition to analyse NO2, SO2, CO and PM10. Summary of results are as follows;

Table 3.8: Summary of ambient air quality monitoring results at Taegil quarry

Time averageMeasurement/ (micro g/ m3)

Permissible level (micro g/ m3)L 1 L 2April Nov April Nov

SO2 1 hour 6 5 9 7 200NO2 1 hour 7 10 8 11 250CO 1 hour 5,000 4,600 8,000 3,900 30,000

PM (10) 24 hours 38 35 42 28 100

The measured N O2, S O2, C O and PM10 levels ar e well b elow t he compliance r equirements stipulates by t he CEA under the provisions of Extraordinary Gazette Notification No. 1562/ 22, 15th

August, 2009. No s ignificant c hange in the m easured a ir qu ality parameters al so o bserved bet ween A pril an d November 2009.


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Figure 3.6: Noise and Air quality monitoring locations at Taegil quarry, Nehinna

Air Blast over Pressure and Ground vibration Ground v ibration and a ir b last o ver pressure generated f rom blasting op erations were continuously monitored at t he premises of sensitive r eceivers (shown i n Annex V III) selected based on t he expertise of independent monitoring agency; the Technical Services Division (TSD) of GSMB, which was appointed by the regulatory Authorities. The lease agreements for obtaining prmises H1, H2, H4, H30 and H56 to the Taegill Company in the first quarter, 2009 (refer pp 18, QEMR; January to March, 2009; SW) was extended for year 2010.Hence these premises were exempted from regular monitoring.The TSD-GSMB monitored sensitive receivers; H6, H7, H44, H61 and H62 during the reporting period for air blast over pressure and ground vibration levels. The summary of monitoring results of air blast over pressure is presented in Figure 3.7 and ground vibration is presented in Figure 3.8 below;

Location DescriptionL-1 Ms. K. Nirosha Sarojani, Egodawatta, Nehinna, Dodangoda L-2 Mr. S. Piyadasa, Egodawatta, Nehinna, Dodangoda

OfficeQuarry

Access to quarry

L-1

L-2


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Air blast over pressure

Figure 3.7: The summary of air blast over pressure levels in the second half, 2009

The monitoring results of show exceedance of the stipulated level, 120 dBA at premises H6, H7, H44, H61 and H62.The probability of exeeding stipulated level at each reciever is summarized in the Table 3.9. below;

Table 3.9: The probability of exeeding stipulated value at sensitive recievers in second half, 2009S. No Number in the location map Probability of exeedance

1 H 6 2.68%2 H 7 2.68%3 H44 0.67%4 H 61 2.01%5 H 62 0.67%

The probability factor emphasizes the chances of exeeding the stipulated level is significantly low and the oc cupants of t hese l ocations ha ve n ot c omplained aga inst air pr essure i mpacts t o t he dat e.However, intensified regular clearing of quarry phase, minimize bolder blasting at high elevation and adjusting bl asting d irection ar e k ey m itigations b eing i mplemented t o f urther c ontrol a ir v ibration impacts. Effectiveness of t hese m itigations e vident through r educed ex ceedance dur ing the l ast quarter of 2009 as shown in the Figure 3.7.


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Ground vibration

Figure 3.8: The summary of ground vibration levels in the second quarter, 2009

The results emphsize ground vibration levels are well below the value (5 mm/sec) stipulated in the EPL and Mining Licence. Hence it is confirmed that there is no adverse impact on the structures concerned.


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4. IMPACT CONFIRMATION MONITORING

Impact Confirmation Monitoring is to ascertain the effectiveness of the mitigation measures proposed and to validate the assumptions made in the EIAR. Further this provides a comprehensive collection of data to ensure long term environmental impacts are captured.

Impact confirmation m onitoring at the W orks is m ainly undertaken through m easuring the status of environmental media by specialized independent agencies.


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4.1 Monitoring Requirements

The requirements during the reporting period to ensure that the environmental media and parametersare monitored as specified under the “Schedule for Compliance and Impact Confirmation Monitoring” of EMP (AnnexIII) are given in Table 4.1.

Table 4.1: Monitoring requirements

No. Parameter Monitoring Location

01 General Air Quality Hourly Levels of NO2, SO2 and CO in ppm.24 hourly hourly average of PM10 in mg/m3

Boundary of port premises, at Navy quarters and Chaitya (locations 1, 2 and 3 of figure 7 of EMP)

02 Noise Hourly noise levels at 5 minute intervals in dB (A)

Boundary of port premises at Navy quarters, Chaitya, Harbor Masters Building and SAGT Pilot Station (respectively locations 1, 2, 3 & 4 of figure 6of EMP)

03

04

05

06

07

Ground Vibration

Water Quality Parameters;pH, Temperature, Salinity, Turbidity, TSS, DO, BOD5, COD, Total P, Total N, Total Coli forms, Faecal Coli forms, NH3-N (Top & Bottom)Heavy MetalsCu, Cr, Ni, Pb, Cd, Sn, Hg, As, Nn, AlPesticidesAldrin, Dieldrin

Sediment Quality;NH3-N, Total N, Total P, Sulphide, Total Organic Carbon

Heavy MetalsCu, Cr, Ni, Pb, Cd, Sn, Hg, As, Nn, Al

Organo chloridesAldrin, Dieldrin, PCBs, DDTsWater Quality Concentration levels of suspended sediments;Suspended sediment concentrationCurrent speed & directionDissolved oxygen concentration

Watching brief for under water heritage during dredging

Maritime museum (location1) & Harbor Master’s office (location 2) of figure 5 of EMP.

Figure 2 of EMP; Locations1, 4, 8, 17, 18, 20

Figure 4 of EMP, locations 1, 16, 18, 21, 22, 24, 30, 40

Figure 4 of EMP, locations 16, 22, 24, 40

Figure 4 of EMP, locations 16, 24, 40

* Reference station in front of Kelani river mouth* 03 mobile stations as defined by SW/ SLPA and may be altered time to time to suit the zones of dredging & reclamation

Off shore dredging & reclamation areas (as recommends by Archeology Dept.)

08 Settlement monitoringVertical & horizontal coordinates (reference points)

Harbour Master’s Building, Chaitya, Museum & Water tank

09 Photographic surveyVisual features of key building

Harbour Master’s Building, Chaitya, Museum & Water tank


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4.2 Permissible or Action LimitsThe permissible levels specified under the relevant regulations in Sri Lanka or action limits as specified in the EIAR in relation to each of the parameter in the Table 4.1 above, are given with the monitoring results.

4.3 Monitoring ResultsThe Contractor’s s ubcontractors, National Building R esearch O rganization (NBRO) c onducted periodical monitoring of noise, a ir and water quality and ground vibration in April 2009 and National Aquatic Resources Agency ( NARA) continued monitoring s uspended s ediment c oncentration i n dredging an d r eclamation ar eas. T he C ontractor with t he guidance of the Consultant c ontinued monitoring settlement of sensitive structures and periodic photographic survey.

4.3.1 Ambient air quality at the siteAir samples were collected from locations, A 1 and A 2 of Figure 4.1 on 10th and 11th

Parameter

November, 2009 under dr y weather c ondition w ith fairly s cattered winds t o anal yze NO2, S O2, CO and P M10. T hesummary of results is as follows;

Table 4.2: Summary of ambient air quality monitoring results at the south harbor construction site

Time average

Measurement/ (micro g/ m3)Permissible level (micro g/ m3)A 1 A 2

April Nov April NovSO2 1 hour 21 28 41 35 200NO2 1 hour 27 35 36 47 250CO 1 hour 12,000 13000 11,000 14000 30,000

PM (10) 24 hours 39 42 63 74 100

The measured N O2, S O2, C O and PM10 levels ar e well b elow t he compliance r equirements stipulates by t he CEA under the provisions of Extraordinary Gazette Notification No. 1562/ 22, 15th

August, 2009. However the comparison shows a slight increase of air pollutant levels measured in the second hal f of 2009. T he increased construction operations and c hanges i n wind patterns dur ing measurements may cause this change.

4.3.2 Operational noise at South Harbour construction siteHourly c ontinuous t ime i ntegrated no ise l evels were m easured i n 5 m inutes i ntervals c overing Morning and Night times on 10th and 11th

Time

November, 2009 at locations N 1, N 2, N 3 and N 4 of Figure 4.1. A summary of results is as follows;

Table 4.3: Summary of noise level monitoring results at the south harbor construction site

Range Measurement/ Leq dB(A) RemarksN 1 N 2 N 3 N 4

Morning Maximum 73 67 73 72 Sea breeze, Port operations, Vehicle movement and CSH Construction activities

Minimum 56 60 68 60

Night Maximum 62 60 76 72Minimum 49 51 51 51

The CEA stipulated permissible noise levels for a construction s ite are 75 dB (A) during day t ime and 50 dB (A) during night time.The m easured no ise levels at al l locations, during da y t ime ar e well below t he c ompliance requirements.The measured night time noise levels exceed night time stipulated level. However construction noise of CSH works is not directly responsible for the reported high noise level since, it is only a contributor amongst multiple no ise sources. Further this is predominantly an industrial area where no sensitive receivers are found, except Sri Lanka Navy Head Quarters. Although the maximum reported noise at this b oundary (N 2) is 6 0 dB ( A) the prominent noise l evel i s below 55 d B ( A). N oise level at t his boundary shows general decrease from first half of 2009 levels and is further expected to reduce with the progress of works when noisy operations are shifted away from this sensitive receiver.


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Figure 4.1: Air quality, Noise and Vibration monitoring locations at Port site, Colombo.


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Figure 4.2: Water quality (WQ), Sediment quality (SQ) and suspended sediment concentration (SSC)monitoring locations at Port site, Colombo.


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4.3.3 Ground vibration at South Harbour construction siteThe continuous 15 m inutes vibration levels (peak particle velocity) were measured for a per iod of 24 hours at the Maritime Museum and Harbour Masters Building (locations V 1 and V 2 of Figure 4.1) on 10th November, 2009. According to the results the vibration level at 10-50 Hz frequency range at both locations are below 0.5mm/ sec and is well below the CEA stipulated interim vibration standard (1 mm/ sec. at 10-50 Hz vibration range) for archeologically preserved structures.

4.3.4 Water quality at the South Harbor construction site Water samples were collected from six locations (locations WQ1, WQ 4, WQ 8, WQ 17, WQ 18 and WQ 20 of Figure 4. 2) Between 10:00 hrs to 16:30 hrs on 24th November 2009 and analyzed for; pH, Temperature, Salinity, Turbidity, TSS, DO, BOD5, COD, Total P, Total N, Total Coli forms, Faecal Coliforms, NH3-N (Top & Bottom), Heavy Metals (Cu, Cr, Ni, Pb, Cd, Sn, Hg, As, Nn, Al) and Pesticides (Aldrin, Dieldrin). The summary of results, comparing with measured levels in 2nd quarter 2009 and 2004 (the base line data as per pp A 3-2, EIAR, Scott Wilson) and action limits as defined in the EIAR, are given in Annex VI.The results indicate TSS and NH3-N (Top & Bottom) levels at al l locations measured in 4 th quarter, 2009 are higher than the base line but lower than the 2nd quarter 2009 measured levels. Total P levels measured in 4 th quarter, 2 009 at all locations are hi gher t han both base l ine an d 2 nd quarter, 20 09 measured levels. In contrast BOD and COD levels at al l measured locations remain lower than the base line data. The heavy metals and pesticides concentrations remain below the detectable levels.The Government of Sri Lanka does not stipulate marine ambient water quality s tandards. However, periodical sediment quality monitoring will continue to collect data and after collecting adequate data that will be pr ocessed f or ef fective i nterpretations and f or i dentifying an y trends leading t o environmental hazards.

4.3.5 Sediment quality at the south harbor construction site Sediment samples were collected f rom eight sea bed locations ( locations SQ 1, SQ 16, SQ 18, SQ 21, SQ 22, SQ 24, SQ 30 and SQ 40 of Figure 4. 2) between 10 00 hrs to 16 30 hrs on 28th October, 2009 at depths varying 18 to 20 m around the harbour and at 10m around river mouth. Samples were analyzed for; Total N, NH3-N, Sulphide, TOC, Total P and Heavy Metals (Cu, Cr, Ni, Pb, Cd, Sn, Hg, As, Al). The summary of results, comparing with measured levels in 2nd Quarter 2009 and in 2004 (the base line data as per pp A 3-2, EIAR, Scott Wilson) and action limits as defined in the EIAR, is given in Annex VII.The results indicate measured NH3-N levels and Hg levels show a general increase and the Hg level exceeds t he r ecommended l ower t rigger v alue. T he m easured C r and N i l evels at S Q30 ( inner Colombo har bour) exceed t he recommended l ower t rigger value and the base l ine l evels. T he measured Pb level at same location exceeds base line level. In contrast total N levels at all measured locations continue to decrease.The gov ernment of S ri L anka does not s tipulate marine a mbient w ater qu ality s tandards. The measured levels of all parameters at all locations are well below the low trigger value of heavy metal in s ediments as r ecommended in t he EIAR ( pp A 3 -6, E IAR, Scott W ilson), e xcept m easured H g levels. The Works do not cause significant changes in the sediment quality. The EI AR ( pp 4-20, EIAR, Sc ott W ilson) r eveals t his ar ea is no t inhabited b y primary pr oducers, hence t he hazards as sociated with long t erm bi oaccumulation of i ncreased hea vy m etals isconsidered minimal.However, periodical s ediment quality m onitoring will c ontinue t o c ollect data and after c ollecting adequate data that will be processed for effective interpretations and for identifying any trends leading to environmental hazards.

4.3.6 Suspended sediment concentration levels at Colombo South Harbour construction site The suspended sediment level is continuously monitored by the National Aquatic Resources Agencyon behalf of the HDEC. The daily average results in the second half of 2009 is given in Figure 4.3.The dredging zone and water quality monitoring locations remain unchanged as given in Figure 4.2.The Contract specified (SC 5.033, Specification, C PEP, SLPA) action l imit of T SS due t o dredging and reclamation operations as “exceeding 130% of up-drift value” from the dredging location (Action limit 1) and the reference - Kelani River mouth - station value” (Action limit 2).


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The m onitoring r esults show no s ignificant an d no consistent i ncreases in suspended s ediment concentration ( SSC) that exceed the action lim its during t he r eporting per iod. The v ariation p attern indicates the SSC at measured locations are independent from the construction plume but depend on the influx of Kelani r iver. This confirms the f ine sediment transport modeling results; which conclude that the impact is contained within a 1-2 Km zone without affecting near-shore/ beach as given in the EIAR (pp 4-3, EIAR, Scott Wilson). The less significant gap between measured up-drift and down-drift SSC levels indicates the plume is restricted even within less than 1 km zone, convincing the effective mitigations at dredging and reclamation. The general periodical change of measured SSC levels at all location r epresents t he m onsoon de pendent s easonal v ariation i n t he pr edominant a longshore sediment transport direction.


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Figure 4.3: Daily average suspended sediment concentration in second half, 2009


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4.3.7 Watching brief of underwater heritageContinued dur ing dr edging and r eclamation an d al so at on s hore op erations. A par t of “cannon” (Picture 4.2) considered an archeological monument was found in December, 2009 during the SAGT road diversion work in front of the Harbour Master’s Building. The Contractor took over this from the Sub contractor and handed over to SLPA for transferring to the Department of Archeology”.

Picture 4.1: Historical monument handed over to the Archeological Department.

4.3.8 Settlement monitoringSettlement m onitoring is continued (to assess t he i mpact of v ibration c aused b y t rucks and construction plant) at the sensitive structures (Harbour Masters Building, SLPA Water Tank, Chaitya Temple and Museum) in the Port, located in close proximity to the Site area (Figure 4.2).According t o t he survey results, t here ar e n o o bservable s ettlements henc e t he s tability of Habour Master’s B uilding, S LPA W ater Tank and Museum is c onfirmed. However, monitoring t he C haityaTemple was not permitted by Sri Lanka Navy on security reasons. This indicates there is no impact on the s tability of t he m easured s tructures s ince t he c ommencement of t he project ov er 21 m onths period.

Table 4.4: The summary of settlement monitoring results

Monitoring Date and Observation Based on Results

No.

Harbour Master's Building SLPA Water Tank Museum

Date Movement Date Movement Date Movement 16 July-29 No July-29 No July-29 No 17 Aug-31 No Aug-31 No Aug-31 No 18 Sep-28 No Sep-28 No Sep-28 No 19 Oct-30 No Oct-30 No Oct-30 No 20 Nov-27 No Nov-27 No Nov-27 No

21 Dec-29 No Dec-29 No Dec-29 No

4.3.9 Photographic survey

The Contractor took 32 pictures in the 4th quarter, 2009 to record structural condition, covering

Harbour Master’s Building, SLPA Water tank, Chaitya and Museum and will continue on periodic

basis.


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5. ISSUES

5.1 Lapses in mitigation

The lapses recorded during the reporting six months were limited to Inundation of part of the CWA in mid November, Intermittent dust emission from the standby batching plant and Open disposal of water entrapping objects. H ow e ver delay in fuel o il removal f rom s unken dr edger; KC-19, Intermittent disturbances to f isherman in LoP and Exceedance of air blast over pressure l imit at some sensitive receivers at the main Quarry continue since the first half of 2009. A summary of concerns and mitigation adopted is given in the Table 5.1 below;

Table 5.1: Summary of concerns and mitigation adoptedNo. Operation and

location Concerns Mitigation

Continuations

1

Delay in fuel oilremoval from asunken dredger; KC-19, CSH

Inability to remove oil in the vessel initially due to high swell

Safely transfer the stock of fuel oil by a sub contractor for wreck removal under the approval and monitoring of Harbour Master.

2Navigation between CSH and LoP on trial basis

Navigate out side pre-established route intermittently

Tracking the route of each barge using AIS records and control deviations through tug master education and penalty scheme.

3 Main quarry operations

Excedance of air blast over pressure

Controlled blasting (particularly boulders) and regular clearing of quarry phase.

Reporting period

4 Construction site management CSH

Inundation of part of the CWA due to blocked storm water drainages

Cause is unprecedented intense rain storm in mid November and the temporary drainage capacity was adequately increased as a solution.

5Trial operations of stand by batching plant at CWA

Intermittent dust dispersion from material handling

Inadequate dust control during initial trials and was effectively rectified through water sprinkling

6 Waste disposal at CSH

Open dumping of used tyres and discarded containers

Increased the frequency of collection and provided shelter for temporary storage.

All t hese were i mmediately m itigated as summarized, through bringing d own the i mpact l evel t o “insignificant” in terms of the magnitude and intensity of occurrence.Close monitoring and education of the work force are being continued to enhance the effectiveness of environmental mitigation particularly on these operations.

5.2 Complaints

The complaints received during the reporting six months are summarized in Table 5.2 below;

Table 5.2: Summary of complaints received

No Location Subject Affected party1 CSH Inundation of SAGT weighbridge SAGT management

2 CSH Dust emission to the posts in vicinity of site entrance Sri Lanka Navy (SLN) officers

3 CSH Garbage disposal from the “pipe lay barge” SLPA

4 LoP – Barge movement Damaging fish nets Fishermen at Wadduwa coast line

5 LoP – Beach nourishment

Damage of fishing crafts by rock pieces on beach Fishermen at Wadduwa coast line

6 LoP Dispersion of dust from the crusher Occupants in farm lands


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Action taken

The Complaint Man agement P rocedure is in p lace ( Annex I X of B EMR; J une to D ecember, 20 08)helps to promptly respond and rectify social implications cause by the Works. The complaints received during the reporting period were analyzed following the aforesaid procedure and effectively resolved as summarized in Table 5.3 below;

Table 5.3: Action taken on complaints

No Subject Corrective measures Time taken

1 Inundation of SAGT weighbridge

Improved the site drainage of CSH to discharge run off from SAGT outfalls under storm conditions Immediately to two weeks

2Dust emission to the posts in vicinity of site entrance

Ensure water sprinkling during dry material handling Immediately

3 Garbage disposal from the “pipe lay barge”

Guided sub contractor to introduced a waste disposal procedure through a local service provider, approved by MEPA

Within a week

4 Damaging fish nets Compensation provided, Restricted movements to the route and improved warning signs.

Immediately and 2 Weeks

5 Damage of fishing crafts by rock pieces on beach

Increase the rate of removing rock pieces and made compensation

Immediately and 3 Weeks to continue from mid August

6 Dispersion of dust from the crusher

Improve the water sprinkling facility and surface wetting at quarry site Within a month


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6. CONCLUSIONS

The Environmental M anagement P lan [EMP] is implemented b y t he C ontractor whilst t he E ngineer closely monitors the effectiveness of mitigation on behalf of SLPA (the Developer). Overall monitoring of the ef fectiveness of environmental m itigation is c arried out b y t he E nvironmental Monitoring Committee, which is chaired by CCD.

The following works were undertaken in the reporting period:-• Rock filling in the breakwater core• Dredging new Port approach channel and submarine pipeline and under water rock removal• Reclamation and surcharge for breakwater and the Contractor’s Working Area (CWA)• Sea route haulage of quarried rock from LoP, Wadduwa to Port site, Colombo• Stockpiling quarry run and quarry armour at the LOP and operating the Contractor’s main quarry

The environmental mitigations and monitoring actions included:-• Use of 100% dredged material for reclamation avoiding impact of increased off site turbidity• Continuous protection of existing outfalls and historical monuments at CWA• Continuous control of dust and traffic at site operations and during haulage• Implementing a waste management scheme ensuring standard disposal of solid and liquid wastes• Beach stability monitoring and nourishment at LoP• Continue a healthy dialog with fishers at LoP minimizing adverse impacts due to the Works• Avoid or control adverse impacts of quarry operations at the main (Taegil) quarry, Dodangoda • Controlling impacts as stressed in the Initial Environmental Studies conducted separately for both

facilities as described in Section 3.1, as recorded through site audits.

The c ompliance m onitoring of Works c ontinue t hrough s ite audit and i mpact m easurement bas ed monitoring.

The site audit results as described in Section 3.1 ensure effective mitigations during operations as per the EMP and facilitate immediate rectification of impacts such as deviation of barges from approved route at sea route haulage, spontaneous dust emission and events of unacceptable waste disposal.

The impact measurement based monitoring results described in Section 3.2; confirm compliance withstipulations under the “construction permit” of CCD for beach profile changes at LoP and “EPL” of the CEA and Mining License of GSMB for noise and vibration levels at Taegil quarry, Dodangoda.

The impact monitoring results described in Section 4, indicate air, water and sediment quality impacts at the Colombo Port site are within the stipulated levels except night time operational noise, which is multi sourced and not causing any social impacts due to the site being located in a high back ground noise zone. However the Works continue to experienced increasing turbidity (sediment plume), water heavy m etals c oncentration at the site an d sediment heav y m etal l evels f urther N orth of s ite whencomparing to the measured base line values in 2003 and 2004.

The few minor scale lapses in mitigation as given in Section 5 were immediately addressed to achieve zero-impact or i nsignificant l evels. The o verall environmental m onitoring r esults c onfirm, the Works did not cause significant Social and E nvironmental impacts during the second half of the year similarto the first half of 2009.In the forthcoming quarter, major areas of concern in terms of environmental management of Works are in relation to:-

• Haulage through Sea and Land routes• Construction of main break water and secondary breakwater• Re-routing of sub marine pipeline• Removal of old crude oil submarine pipeline• Constructing SAGT access road

This m onitoring report is pr epared at bi-annual intervals, to r eflect the s tatus of en vironmental compliance and impacts during the six month reporting period and to conclude that the environmental impact of the Works has been managed successfully to both prevent, contain and mitigate impacts.


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References

1. Scott Wilson Kirkpatrick & Co Ltd, Environmental Impact Assessment Report (Colombo Port

Efficiency & Expansion Project), 2005.

2. Independent consultants for Hyundai Engineering Construction Co., Ltd, Initial Environmental

Examination Report (Loading Out Point, Wadduwa), 2008.

3. Hyundai E ngineering C onstruction C o., L td, Environmental Management P lan of the

Contractor, 2008.

4. Scott Wilson Lt d, B iannual E nvironmental M onitoring R eport ( Colombo P ort E xpansion

Project) from June to December, 2008.

5. Scott Wilson Lt d, Q uarterly E nvironmental Mon itoring R eport ( Colombo P ort E xpansion

Project) from January to March, 2009.

Abbreviation

ADB Asian Development BankCCD Coast Conservation DepartmentSLPA Sri Lanka Ports AuthorityNBRO National Building Research OrganizationNARA National Aquatic Resources AgencyFD Fisheries DepartmentMEPAEIAR

Marine Environmental Protection AgencyEnvironmental Impact Assessment Report

EMP Environmental Management PlanBEMR Biannual Environmental Monitoring ReportQEMR Quarterly Environmental Monitoring ReportIEER Initial Environmental Examination ReportCSHCWA

Colombo South HarbourContractor’s Working Area

IWA Initial Working AreaLoP Loading Out PointTSHD Trailer Suction Hopper DredgerBOD Biochemical Oxygen DemandCOD Chemical Oxygen DemandDO Dissolve OxygenSSC Suspended Sediment ConcentrationTSS Total Suspended Sediment AIS Automatic Information System


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