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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 October 2009

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

JANUARY TO JUNE 2009

COLOMBO PORT EXPANSION PROJECTBI-ANNUAL ENVIRONMENTAL MONITORING REPORTJANUARY TO JUNE 2009

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TABLE OF CONTENTS

EXECUTIVE SUMMARY..................................................................................................3 1. INTRODUCTION.......................................................................................................4 2. PROJECT DESCRIPTION ........................................................................................5

2.1 Current Progress of Works 5 2.2. Project Organisation 6 2.3. Status of Relevant Permits and Licenses 6

3. COMPLIANCE MONITORING ..................................................................................7 3.1. Site Audit Based Monitoring 8

4. IMPACT CONFIRMATION MONITORING ..............................................................28 4.1 Monitoring Requirements 29 4.2 Permissible or Action Limits 30 4.3 Monitoring Results 30

5. ISSUES...................................................................................................................37 5.1 Lapses in mitigation 37 5.2 Complaints 37

6. CONCLUSIONS......................................................................................................39

List of Tables2.1 Key officers related to environmental management of Works 52.2 Environmental permits & licenses 53.1 The schedule of site audit events 73.2 Environmental monitoring requirements covered by site audits 83.3 Summary of meetings held with relevant parties and key concerns in the period 153.4 Environmental monitoring requirements stipulated by environmental permits 183.5 Summary of noise level monitoring results at LoP 183.6 Summary of ambiant air quality monitoring results at LoP 193.7 Summary of suspended sediment concentration monitoring results at LoP 193.8 Summary of noise level monitoring results at Taegil quarry 213.9 Summary of ambiant air quality monitoring results at Taegil quarry 223.10 The probability of exceeding stipulated level at sensitive recievers in 2nd quarter, 2009 254.1 Monitoring requirements 284.2 Summary of ambiant air quality monitoring results at Port site 294.3 Summary of noise level monitoring results at Port site 294.4 The settlement monitoring results 355.1 Summary of concerns and mitigation adopted 365.2 Summary of complaints received 365.3 Action taken on complaints 37

List of Figures3.1 The graphical summary of site audit based beach status monitoring results 163.2 Noise and air quality monitoring locations at LoP 173.3 The graphical summary of CCD stipulated beach profile monitoring results 163.4 Noise and air quality monitoring locations at Taegil quarry 233.5 The summary of air blast over pressure levels in the first quarter, 2009 243.6 The summary of air blast over pressure levels in the second quarter, 2009 243.7 The summary of ground vibration levels in the first quarter, 2009 253.8 The summary of ground vibration levels in the second quarter, 2009 264.1 Noise and air quality monitoring locations at Port site 304.2 Noise and air quality monitoring locations at Port site 314.3 Daily average suspended sediment concentration in first quarter, 2009 334.4 Daily average suspended sediment concentration in second quarter, 2009 33


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List of Photographs3.1 Discharging dredged sand through pipeline for reclamation 113.2 Coral specimen collected at diving survey 113.3 Duly maintained existing outfalls from SAGT terminal 113.4 Imposed speed limits 123.5 The dust control at CWA main batching plant and IWA stand by plant 123.6 Duly protected battens berg battery 123.7 The solid waste collecting infrastructure at Port site 14

3.8 The contractor continues routine maintenance of main rock supply road to LoP (May, 2009) 143. 9 Discussion with the Fisheries Society, Pothupitiya, Wadduwa in progress (May, 2009) 143.10 The view of eroded LoP North beach at Ch 200 m at end of March, 2009 153.11 The view of LoP North beach at Ch 200 m end of May, 2009; after nourishment

and sand stock pilling 153.12 The view of eroded LoP North beach from Ch 450 m to Ch 600m at end of

March, 2009 153.13 The view of LoP North beach from Ch 450 m to Ch 600m at end of

March, 2009; after nourishment and sand stock pilling 153.14 The Western border stream at main quarry is protected with bolder packed bund 163.15 The Eastern water stream at main quarry is protected with grass sods

covered earth bund 164.1 A tube sampler collected from harbor mouth indicates fresh deposit of sand on the top 354.2 Historical monument handed over to the Archeological Department 35


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Executive Summary

To ensure the environmental m anagement o f 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 W ilson Ltd. (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 t he r eporting per iod two trailer s uction hopper dr edgers ( TSHD) dredged the ne w P ort approach channel and placed surcharge by bottom dumping sand for the breakwater, reclamation and for the Contractor’s Working Area (CWA).

Dredging for the sub-sea oil pipe line trench is in progress and boulder removal by clam shell grab will continue once the seasonal high swell condition is over.

The quarry r un core of t he main br eak w ater is placed t o Ch 750m. The temporary breakwater adjoining the CWA is protected with 1.3 to 2.9 t armour.

The Client’s, E ngineer’s and C ontractor’s st aff moved t o of fices on the CWA in t he P rot. T heconstruction infrastructure is established at the CWA.

The sea route for haulage of quarry products, Core Loc TM and Tetra Pod concrete armour units from LoP at Wadduwa to Colombo is being established.

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.

Limited haulage of quarry products to the Port through land routes is in progress.

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.

The key environmental mitigations during reporting period are:-• Minimizing under water blasting for removing only the hard rock • Using 10 0% of dr edged s and for r eclamation, with no off s ite di sposal to d ate and lim ited

rainbowing• Implementing a site waste management scheme• Imposing speed limits on loaded trucks and the site transportation• Employing traffic control men for heavy vehicle traffic management• Controlling fugitive and point source (batching plant, metal crusher) dust emission• Continuous replenishment of LoP beach• Paying compensation for disturbed living of fishing folk at LoP • Compensate and evacuate vulnerable dwellings impacted by the blasting at the (Taegil) main

quarry• Clearing quarry phase regularly and effective control of blasting to minimize fly rocks

Compliance m onitoring b ased o n s ite a udit o bservations, confirmed t hrough r esults of impact measurements, indicates the environmental management of the Works is maintained to the standards expected by the CCD and ADB during the reporting period.


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1. INTRODUCTION

BackgroundThe A sian D evelopment B ank ( ADB) provides the funding to t he G overnment of t he D emocratic Republic of Sri Lanka to construct the infrastructure works 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 January to June 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 15 months out of t he 48months Contract period. The works in progress in reporting period are summarized below :-

2.1.1 Colombo South Harbour Site

Dredging and reclamationDredging of the Port approach channel and sub-sea oil pipeline route, is being carried out using two trailer s uction hopper dr edgers [ TSHDs] the Goryo 4 Ho and Goryo 6 Ho. T he 20m3 grab dr edgerPandora engaged in dredging in March 2009 and left the p[roject.

A volume of 5.4 million m3 has been dredged within this 6 month reporting period, with 3.3 million m3

and .2.1 million m3 respectively in the first and second quarters, 2009.

The surcharge and r eclamation is placed in the breakwater below -7.0mLWOST by bottom dumping dredged sand. The reclamation of CWA mainly by pumping dredged sand ashore through a f loating pipeline is almost completed.

Breakwater constructionThe breakwater toe t rench has been extending over 800 m and 3.5 million m3 sand and 44,000 m3

quarry rock for construction of quarry run core up to 750 m length of main breakwater, were placed inthe reporting p eriod. The breakwater has b een t emporarily protected by ga bions and 1. 3 t o 2.9 tarmour until an adequate quantity of rock armour, Core Loc TM and Tetra Pod concrete armour units are available.

Construction of the temporary breakwater adjoining the CWA was completed in May, 2009 to a length of 200 m.

Dredging for re-routing sub sea oil pipe lineThe Goryo 4 Ho is now undertaking the initial dredging for the sub-sea oil pipeline route.Underwater blasting was c onducted for removing rock on t he submarine pi pe r oute. T wo r eefs,identified as limestone c ap rock were removed as far as pos sible by clamshell and d isposed of as revetment on the CWA. . 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 i ncreased r ate t o c ompensate for the shortage of s upply b y s ea routes. A cumulative volume of 400,000 m3 of quarry rock and rock amour has been brought to S ite using 10 m3 dump trucks. Sea r oute t ransportation b y bar ges c ommenced on a t rial b asis i n March 200 9 an d 78 N o. Core LocTM, 47 No. Tetra pod concrete armour units and cumulative 20,500 m3 bringing to site of rock from W adduwa LoP. Transported m aterials are b eing stockpiled in the Contractors Working Area (CWA), adjoining t he SAGT t erminal a nd S ri La nka N avy premises or bei ng directly d umped f or breakwater construction.

2.1.2 External arrangements for material supply

Load out PointThe dredging of the LoP basin is be ing c ontinued. Initial barge deliveries continue except dur ing rough sea condition period in the SW monsoon.A volume of 240,00 m3 of graded rock amour and quarry run were added to the existing stockpiles at the LoP. Balance of Core LocTM and Tetra pod concrete armour units remained at the LoP awaitingtransport to Colombo site.

QuarryingBlasting operations continue at the Contractor’s main quarry (Taegil quarry) at Nehainna, producing mainly rock armour and quarry run.


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A volume of 140,000m3 of quarry products i ncluding quar ry run, r ock am our 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 W orks. A volume of 93,000m3 was supplied from t hese quarries during t he first quar ter and suspended in the second quarter.

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 250 to 100 from all the quarries to LoP during this period.

2.2. Project Organisation

The project organisation for environmental management remains unchanged from the Annex I of “Bi-annual Environmental Monitoring Report (BEMR); June to December, 2009”.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 Deputy Planning Manager Heo, C.Y., 0773401854

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/08/314 Construction & operation of LoP

3 Central Environmental Authority EPL; 01921 (R1) Quarry operations, main quarry,

Neheinna

4 Geological Survey and Mines Bureau

Mining License (ML); IML/A/MD/9145 and supplementary attachment 2-16.12.2009 and follow up extensions

Quarry operations, main quarry, Neheinna


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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 I.

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 with the schedule as given in the Table 3.1 below. The schedule was revised, considering the s ignificance of env ironmental c onsequences during t he l ast 14 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 DETL and Sub Contractors Contractor

6 Ad-hoc Site Audit 12 times/Year

Compliance Monitoring by EER and Face-to-face communication between DETL, SI Engineer

7Environment Monitoring Record

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

Contractor

8Regular Site EnvironmentalAudit

MonthlySite Monitoring jointly by EER and ETL with face-to-face communication between DETL & 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, SI/ Engineer, DETL/ 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, DETL: Deputy Environment Team Leader, EC: Contractor’s 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 by 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 env ironmental 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

Quarry oper ations s hall be c onducted i n c ompliance w ith local regulationsHaulage shall be carried out as per local regulations, adopting adequate safety and pollution control measuresRelevant ap provals s hall b e obt ained f or c onstruction and oper ation of Load out Point in compliance with relevant stipulations


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3.1.2 Results of Site Audits

The key site auditing was undertaken by 24 main site inspections, 6 environmental monthly meetings to r eview C ontractor’s m onthly environmental r eport and s ite l evel environmental concerns an d 25meetings 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 no offsite disposal

to minimize impacts upon the external ecosystems (Picture 3.1).2) Under water t est blast was conducted with participation of Sri Lanka Navy, CCD, CEA and

GSMB officers and the ground vibration at Port s tructures was monitored through Technical Services Division of GSMB. No impacts were observed.

3) Diving s urvey was c onducted i n t he ar ea des ignated f or under water bl asting t o ens ure no ecologically sensitive biota or historically valuable wrecks are found (Picture 3.2).

4) Under water blasting was restricted for removal of “Hard rock” outcrops and loose rocks were removed by a clamshell grab to minimize impacts on benthic and pelagic flora and fauna.

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

6) The existing storm water drainage outfalls are protected to maintain uninterrupted f low, untilthe permanent drainage network is provided (Picture 3.3).

Breakwater construction and Site managementThe m itigations incorporated dur ing breakwater an d CWA c onstruction, general s ite operations and temporary facilities are as follows:-1) Controlled speed limits (Picture 3.4).2) Induction for heavy machinery/ vehicle operators on best practices to minimize dust and noise

emanating from heavy vehicle movement.3) Water sprinkling on surface of transportation routes and soil exposed area in IWA and CWA

to control dust.4) The main batching p lant at CWA and s tand by plant at I WA, ar e equipped with pr otective

covers to control point source dust emissions and excessive noise emanation (Picture 3.5).5) Solid wastes generated at Works are c ollected an d disposed through a third p arty agency,

which operates under the approval of Marine 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 the site (Picture 3.7). The waste disposer transfers the non-recyclable portion to the Kollonnawa waste disposal facility of CMC.

6) Sewage and domestic effluents generated at the site are discharged in to a net work of septic tanks and soakage pits located within the premises (Annex II). Arrangements are in place for pumping out sewage using a gully to road tankers.

7) Storm water drainage network is being constructed simultaneously with CWA reclamation. 8) 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.

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

10) 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 W ilson Ltd.) has been cordoned of f for protection and is being continuously monitored (Picture 3.6).

11) The road signs along side access road to the IWA and CWA are duly maintained and trained traffic c ontrol flagmen are i n place to prevent interruptions t o ge neral port t raffic and accidents.


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Picture 3.1: Discharging dredged sand through pipeline for reclamation.

Picture 3.2: Coral specimen collected at diving survey.

Picture 3.3: Duly maintained existing outfall from SAGT terminal.


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Picture 3.4: Impose speed limits.

Picture 3.5: The dust control at CWA main batching plant and IWA stand by plant.

Picture 3.6: Duly protected Battenberg battery.


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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 a ccordance w ith the requirements of t he road

authority and local authorities concerned (Picture 3.8).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 haulageThe following m itigations were implemented on t rial basis during the initial barge movements in the first quarter:

i. Maintaining a good communication link with SLN and fishing community;ii. Demarcation of barge movement route and anchorage area;iii. Developing a t ime s chedule f or bar ge movement and educ ating impacted fishing

communities on these schedules and routes.iv. Equipping the barges with audible and visual warning signs and c onducting induction for

operators.The t rial bar ge m ovements continued at i ncreased i ntensity i n the latter p art of s econd quarter.Measures were implemented i n t he s econd q uarter t o m inimize adverse impacts on f ishermen and marine ecosystem, particularly with increasing sea route haulage;1) A c ontinuous d ialog with t he C oastal C onservation Department, F isheries D epartment and

Fishing S ociety c ontinued i nitially t hrough weekly and s ince m id A pril t hrough f ortnightly meetings.

2) A “ code of pr actice f or minimizing c onflicts b etween f ishermen and C ontractor due to navigation” wa s drafted. T his c ontains c ommitments of bot h par ties including t rialed mitigations from no i. to iv above and being improved incorporating comments of FS, FD and CCD. The f inalized c ode o f pr actice is intended to b e a vailable prior to c ommencement ofintensive barge movement.

3) Vulnerable gr oups, particularly f ishing f olk at P othupitiya and neighbours awarenessmeasures were initiated and will be continued (Picture 3.9).

External Operational Activities - LoP, PothupitiyaTo ensure the un-interrupted operation of the LoP, the following measures were incorporated during reporting period;1) A c omprehensive beac h status m onitoring programme (weekly pr ofile m onitoring an d

photographic survey at 50m intervals in t he f irst quarter and fortnightly basis in the second quarter) was implemented since m id February to i mmediately identify the N orth breakwater beach behavior and the effectiveness of nourishment (Pictures 3.10, 3.11, 3.12 and 3.13). Asummary of results is shown in the Figure 3.1 and details are given in Annex III.

2) Beach nourishment placing sand dredged by the high efficiency pump dredger and transport by land vehicles is continued. A cumulative approximate volume of 140,000 m 3 was placed within the reporting period.Severe beach erosion occurred in late March 2009 due to long period swell wave conditions and t he Contractor s uccessfully c ontrolled i mpacts on pr operties t hrough immediate b each protection by sand bags followed by a vigorous nourishment programme.Two m ain s and s tock pi les of appr oximate 9,000 m3 and 7,000 m3 were m aintained respectively at Ch 450 t o 600m and Ch 20 0m along the North beach w ith t he gui dance of CCD, to combat further seasonal erosion expected during the SW monsoon (Pictures 3.11,3.13). The North sand stock pile placed on the beach and backshore, experienced continual erosion t o f eed the high sand demand for l ittoral drift during t he m onsoon. As a r esult t he shoreline remained without retreating even during the monsoon.


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Picture 3.7: The solid waste collecting infrastructure at the site.

Picture 3. 8: The Contractor

continues routine maintenance of

main rock supply road to LoP (May,

2009).

Picture 3. 9: D iscussion w ith t he Fisheries S ociety, P othupitiya, Wadduwa in progress (May, 2009).


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Picture 3.10: The view of eroded LoP North beach

at Ch 200 m at end of March, 2009.

Picture 3.11: The view of LoP North beach at Ch

200 m end of May, 2009; after nourishment and

sand stock pilling.

Picture 3.12: The view of eroded LoP North beach

from Ch 450 m to Ch 600m at end of March, 2009.

Picture 3.13: The view of LoP North beach from

Ch 450 m to Ch 600m at end of March, 2009; after

nourishment and sand stock pilling.


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3) The pr ocedure ( Annex IV of BEMR-June t o 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 06 Site security and safety2 PRDA, SLPA, HDEC, SW 06 Road maintenance and Dust control3 CCD, SLPA, HDEC, SW 06 Water qua lity m onitoring a nd Beach

nourishment at LoP4 CCD, FD, FS, SLPA, HDEC, SW 14 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

4) A t otal s um of R s.900, 00 0 has be en spent to assist t he fishing c ommunity i n t he f orm of compensation f or dam aged f ishing gear and t o r e-organize lost i nfrastructure from t he commencement of LoP operations. These payments were made under the recommendation of CCD and FD (at the forum given under Item 4 of Table 3.3).

5) Surface wetting of the active areas of the LoP including the internal transportation routes and trucks bef ore unl oading, i s c ontinued t o m itigate ex cessive d ust em ission. The s and s tock piles were c overed b y nets pr eventing f ine s and b lowing t owards t he village next t o c oast (Pictures 3.11, 3.13).

Picture 3.14: The Western border stream at main

quarry is protected with bolder packed bund.

Picture 3.15: The Eastern water stream at main quarry is protected with a grass sods covered earth

bund.


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Figure 3.1: 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 bu ilt t o prevent s iltation of do wnstream farm lands due t o s urface run of f are

being duly maintained.4) An 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 disturbing water f low an d siltation (Picture 3.14 and 3.15).

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

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


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3.2 Impact Measurement Based Monitoring

This section covers the measuring of magnitude of environmental impacts by specialized third party agencies to ensure compliance w ith the conditions stipulated in the environmental permits 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 I)

2 CCD permit - LoPNoise, air & water quality, beach profile(parameters given under the item # 1.03, 1.04, 2.02, 2.03, 4.03 & 8 of Annex I)

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

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

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 April 2009 and beach profile monitoring was continued by Contractors survey team with supervision of Consultants surveyors.

NoiseHourly c ontinuous t ime i ntegrated no ise l evels were m easured i n 5 m inutes i ntervals c overing Morning, Evening and Night times on 22nd and 23rd April, 2009 at locations L 1 and L 2 of Figure 3.2.Summary of results are as follows;

Table 3.5: Summary of noise level monitoring results at LoP

Time Range Measurement/ Leq dB(A) RemarksL 1 L 2

Morning Maximum 61 62 Train movement-main sourceMinimum 50 48 -

Evening Maximum 62 62 Train movement-main sourceMinimum 47 48 -

Night Maximum 63 47 Train movement-main source only for N 1Minimum 47 42 -

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.Since the batching plant at LoP was not operated in the reporting period the measured noise levels indicate the non-operational values and hence not included here.


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Air qualityAir samples were collected from the same locations, L1 and L2 of Figure 3.2 on 23rd April, 2009 under dry whether condition with prominent easterly winds to analyze NO2, SO2, CO and PM10. Summary of results are as follows:-

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

Parameter Time average Measurement/ (micro g/ m3) Permissible level (micro g/ m3)L 1 L 2SO2 1 hour 17 14 200NO2 1 hour 20 24 250CO 1 hour 10,000 8,000 30,000

PM (10) 24 hours 47 27 100

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. Since the batching plant at LoP was not operated in the reporting period, the measured ambient a ir quality levels indicate the non-operational values and hence not included here.

Water qualityThe comparison between the pre-dredging suspended sediment concentrations (SSC) measured in December 2008 { refer section 3. 2.3 of QEMR (pp15 of Q EMR, 1 st Quarter, 2009 , SW )} and measurements while dredging operations continue are summarized below;

Table 3.7: Summary of SSC monitoring results at LoP

Location Measured SSC/ (mg/l)Pre-dredging While dredging

L1-inside LoP basin 14.60 51L2-out side break water 14 60

The c omparison highlights a s ignificant increase of t he S SC i n t he marine env irons ex ceeding t he average ambient SSC; 5 to 25 mg/l of Sri Lankan coastal waters.The ec ological impacts c ause b y increased SSC are c onsidered minimal s ince no s ensitive m arine habitats like c oral r eefs or s ea grass are n oted within 1 k m f rom the s ite ( pp 1 5, I EER-Pothupitiya LoP, independent consultants to HDEC). How ever a detailed SSC monitoring is scheduled at the end of SW monsoon to further analyze the changing pattern.

Four water samples were analyzed for pH, Temp., Salinity, DO, BOD5, COD, Tot. P, Tot. N, Coliform organisms, E .coli an d N H3-N i n A pril 20 09. T he r esults ar e gi ven i n t he Annex IV, w hich ar e t he baseline for marine water quality impact monitoring.

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 were monitored in February, 2009 and in May, 2009 as stipulated by CCD. In addition to 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 3.3.The summary indicates cumulative erosion at Ch 1500 m to Ch 3000 m between February, 2009 and May, 2009, which represents the seasonal retreat of beach on the Sir Lankan West coast during SW monsoon. The comparatively low retreat at Ch 350 m to Ch 750 m proves the effectiveness of nourishment at this beach stretch during the monsoon, as explained in Section 3.1.2 with continuous beach nourishment through placing 140,000 m3 dredged sand, by trucks. Sand stock piles and a stock of jumbo bags were maintained for contingency sand bag protection of the beach.


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Figure 3.2: 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 3.3: The graphical summary of CCD stipulated beach profile monitoring results.

Taegil quarry, Nehinne, DodangodaNoise and air quality were monitored by the National Building Research Organization (NBRO) in April 2009 a nd c ontinuous ai r and gr ound v ibration m onitoring is c onducted b y the T echnical Services Division (TSD) of GSMB.

NoiseHourly c ontinuous t ime i ntegrated no ise l evels were m easured i n 5 m inutes i ntervals c overing Morning, Evening and Night t imes on 23rd and 24th April, 2009 at locations L1 and L2 of Figure 3.4.Summary of results are as follows;

Table 3.8: Summary of noise level monitoring results at Taegil quarry

Time Range Measurement/ Leq dB(A) RemarksL 1 L 2

Morning Maximum 58 53 Main sources for L 1 - Quarry and crusher operations and vehicles

Minimum 52 48 -

Evening Maximum 54 54 Main sources for L 1 - Quarry and crusher operations and vehicles

Minimum 48 48 -

Night Maximum 46 44 Insects noise prominentMinimum 41 41 -


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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 10:05 hrs t o 1 0:30 hr s r eporting the a bove m aximum value. This i ntermittent exceedance is limited to 3 0 minutes and c onsider less s ignificant c omparing with l ower n oise levels within 8 oper ational ho urs from 8 :00 hr s t o 17:00 hr s. R eceiving no c omplaint ag ainst no ise pollution from r esidents of L 1, confirm this exceedance is not significant. Since t he s ources ar e c onsidered h eavy m achineries and c rusher pl ant the machine m aintenance were intensified as mitigation. This mitigation with installation of a new crusher plant aims to control emanating high noise levels. Hence, in general the operational noise level of 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 April, 2009 under dry whether condition to analyze NO2, SO2, CO and PM10. Summary of results are as follows;

Table 3.9: Summary of ambient air quality monitoring results at Taegil quarry

Parameter Time average Measurement/ (micro g/ m3) Permissible level (micro g/ m3)L 1 L 2SO2 1 hour 6 9 200NO2 1 hour 7 8 250CO 1 hour 5,000 8,000 30,000

PM (10) 24 hours 38 42 100


August, 2009.


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Figure 3.4: Noise and Air quality monitoring locations at Taegil quarry, Nehinna

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 and Ground vibration Ground v ibration and a ir b last o ver pressure generated f rom blasting op erations were continuously monitored at the premises of sensitive receivers (SR) selected based on the expertise of independent monitoring a gency; the T echnical Services D ivision (TSD) of G SMB, w hich was appoi nted b y the regulatory Authorities. The TSD-GSMB monitored SRs, H1, H4, H61 and H62 (Figure 3.9) in the f irst quarter and SRs H6, H7, H61 and H62 (Annex VIII) in the second quarter 2009.A s ummary of m onitoring results of air bl ast o ver pr essure is presented i n Figure 3.7 and 3.8 and ground vibration is presented in Figure 3.5 and 3.6 below;

Figure 3.5: The summary of air blast overp ressure levels in the first quarter, 2009

Figure 3.6: The summary of air blast overp ressure levels in the second quarter, 2009


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Since SRs H1, H2, H4, H30 and H30 were noted vulnerable to high air blast overpressure levels, these premises were obtained by the Taegill Company on lease basis in the first quarter (refer pp 18,QEMR; January to March, 2009; SW).Hence these premises were exempted from regular monitoring in the second quarter. The monitoring results of second quarter show exceedance of the stipulated level, 120 dBA at premises H6, H7, H61 and H62.The probability of exeeding stipulated level at each reciever is summarized in the Table 3.10.below;

Table 3.10: The probability of exeeding stipulated value at sensitive recievers in 2nd quarter, 2009S. No Number in the location map Probability of exeedance

1 H 6 52 H 7 43 H 61 44 H 62 1

The probability factor emphasize chances of exeeding the stipulated level is significantly low and the occupants of these locations have not complained against air pressure impacts to the date. However, intensified regular clearing of quarry phase, minimize bolder blasting at high elevation and adjusting blasing direction are key mitigations being implemented to further control air vibration impacts.

Figure 3.7: The summary of ground vibration levels in the first quarter, 2009


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

The results in the first and second quarters, 2009 emphsize ground vibration levels are well below the value (5 mm/sec) stipulated in the EPL and Mining Licence. Hence it is confirmend that there is noadverse 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 (Annex I) are given in Table 4.1.

Table 4.1: Monitoring requirements

No. Parameter Monitoring Location

01 General Air Quality (Colombo)24 hourly levels of No2, SO2 and 8 hourly level of CO in ppm. 24 hourly average SPM (as PM10) in mg/m3

Fort Railway Station (CEA Monitoring Station)

02 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)

03 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)

04

05

06

07

08

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, DieldrinSediment 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.)

09 Settlement monitoringVertical & horizontal coordinates (reference points)

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

10 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 ubcontractor, 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 General air quality in ColomboThe N BRO investigated a nd not ed t he CEA operated am bient a ir qua lity monitoring s tation at Colombo f ort is no t f unctioning. However, NBRO w rote to CEA inquiring possibilities of c ollecting relevant historical data and are awaiting a response.

4.3.2 Ambient air quality at the siteAir s amples were c ollected f rom locations, A 1 an d A 2 of Figure 4. 1 on 2 0th April 2009 u nder dr y weather condition with prominent Westerly winds to analyze NO2, SO2, CO and PM10. The summary of results is as follows;Table 4.2: Summary of ambient air quality monitoring results at the south harbor construction site

Parameter Time average Measurement/ (micro g/ m3) Permissible level (micro g/ m3)A 1 A 2SO2 1 hour 21 41 200NO2 1 hour 27 36 250CO 1 hour 12,000 11,000 30,000

PM (10) 24 hours 39 63 100


August, 2009.

4.3.3 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, Evening and Night times on 20th April, 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

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

Morning Maximum 72 72 72 72

Sea breeze, Port operations, Vehicle movement and Construction activities

Minimum 65 63 65 59

Evening Maximum 66 75 79 74Minimum 48 48 58 52

Night Maximum 61 62 78 71Minimum 48 48 50 50

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 t ime noise levels exceed night t ime stipulated level. However this high noise is only partly from construction noise in the area. Further this is predominantly an industrial area where no s ensitive r eceivers ar e found, ex cept S ri La nka Navy H ead Q uarters. Although t he m aximum reported noise at this boundary is 62 dB (A) prominent noise level is below 55 dB (A). Noise level at this bo undary i s expected to r educe with the progress of w orks when noisy op erations are s hiftedaway 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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4.3.4 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 20th and 21st April, 2009. According to the results the vibration level at 10-50 Hz frequency range at both l ocations are be low 0. 2 mm/ sec and i s well below t he CEA stipulated i nterim v ibration standard (1 mm/ sec. at 10-50 Hz vibration range) for archeologically preserved structures.

4.3.5 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 15 30 hrs on 28th and 30th April 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 2003 and 2004 measured base line data (pp A 3-2, EIAR, Scott Wilson) and action limits as defined in the EIAR, are given in Annex VI.The r esults i ndicate TSS and NH3-N ( Top & B ottom) levels at a ll m easured l ocations i ncreased comparing to the base line data and Total P levels at locations WQ 1, WQ 4 and WQ 8 and Total Nlevels at location WQ 1 increased compared to the same baseline data. In contrast BOD and COD levels a t all m easured locations d ecreased c omparing t o t he base line da ta except C OD levels at location WQ 4. The heavy metals and pesticides concentrations were below the detectable levels.The Government of Sri Lanka does not stipulate marine ambient water quality s tandards. How ever the m easured dat a is being processed f or ef fective i nterpretations, incorporating the recommended ambient water quality guidelines (pp A 3-15 to 18, EIAR, Scott Wilson) and for identifying any trends leading to environmental hazards.

4.3.6 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 15 30 hrs on 28th and 30th

April 2009 and analyzed for; Total N, NH3-N, Sulphide, TOC, Total P, Heavy Metals (Cu, Cr, Ni, Pb, Cd, S n, Hg, As, Al) a nd O rgano c hlorides (PCBs, D DTs, Aldrin, Dieldrin). T he s ummary of r esults, comparing with 2003 and 2004 measured base l ine data (pp A 3-2, EIAR, Scott W ilson) and ac tion limits as defined in the EIAR, is given in Annex VII.The r esults i ndicate NH3-N levels at a ll m easured l ocations and H g and As l evels at all locations except SQ 18 and Total P , Ni, P b and Cd, levels at locations SQ 22, SQ24 an d SQ 40 increased comparing to the reported base line data in 2004. In contrast total N levels at all measured locations decreased comparing to the base line data.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 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 sediment quality monitoring will continue to collect data and the measured data is being pr ocessed f or ef fective interpretations, i ncorporating t he r ecommended s ediment qu ality guidelines ( pp A 3 -6, E IAR, S cott W ilson) and f or i dentifying an y t rends l eading t o en vironmental hazards.

4.3.7 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 f irst and s econd quarters, 2009 are given in the Figures 4.3 and 4.4 respectively. The dredging zone and water quality monitoring locations remain unchanged and 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).The monitoring results show no significant and no consistent increases in suspended sediment levelsthat exceed the action l imits during t he r eporting period, ex cept a few spontaneous, s hort t erm increases. In g eneral t he mitigations at dredging and r eclamation ef fectively c ontained s uspended sediment concentrations within the recommended levels during the reporting period.


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How ever, the increased heavy metal levels in the sediment samples at locations SQ 22, SQ 24 and SQ 40 Figure 4. 2 indicate possible transfer of sediments towards the North with the littoral drift. The presence of 3 to 4 cm sand deposit on underlying dark coulour silt layers in the tube sample (Picture 4.1) taken from the Port entrance is possible evidence of suspended sediment transfer.

Figure 4.3: Daily average suspended sediment concentration in first quarter, 2009

Figure 4.4: Daily average suspended sediment concentration in second quarter, 2009


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Picture 4.1: A tube sample collected from harbor mouth indicates fresh deposit of sand on the top

4.3.8 Watching brief of underwater heritageContinued during dredging and reclamation and also prior to commencing under water blasting through diving surveys. No items having heritage value was found during the reporting period.How ever, past records indicates a part of “cannon” (Picture 4.2) considered archeological monument was found in May, 2008 that was handed over to the Department of Archeology” through SLPA.

Picture 4.2: Historical monument handed over to the Archeological Department.


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4.3.9 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 s tructures (Harbour Masters Building, SLPA W ater 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.

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 6 Aug-08 No Jul-08 No Sep-08 No 7 Sep-08 No Aug-08 No Oct-08 No 8 Oct-08 No Sep-08 No Nov-08 No 9 Nov-08 No Oct-08 No Dec-08 No

10 Dec-08 No Nov-08 No Jan-09 No11 Jan-09 No Dec-08 No Feb-09 No 12 Feb-09 No Jan-09 No Mar-09 No 13 Mar-09 No Feb-09 No Apr-09 No 14 Apr-09 No Mar-09 No May-09 No

15 May-09 No Apr-09 No Jun-09 No

4.3.10 Photographic survey

The Contractor took 32 pictures 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 reported six m onths were l imited t o s pontaneous ex ceedance of action lim its for water qu ality at C olombo H arbour s ite, Sinking a c utter s uction dr edger; K C 19 containing 160,00 l of fuel oi l (due t o h igh s well i n late M arch, 20 09), Intermittent d isturbances to fisherman in LoP and Exceedance of air blast over pressure limit at 2 sensitive receivers at the main Quarry.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

1 Dredging at CSH Spontaneous excedance of suspended sediment levels

Short term, with weekly exceeded levels is well below average during flood season. Hence not considered significant.

2 Sinking vessel containing fuel oil

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

Closely monitor. Dispersant available asemergency spillage control measure. Removal of oil once monsoon ends as agreed with Harbour Master.

3Navigation between CSH and LoP on trial basis

Navigate out side pre-established route

Restrict movements to SLN authorized navigation route and preparing “code of practice” and tracking route at both ends through AIS facility..

4 Main quarry operations

Excedance of air blast over pressure

Controlled blasting, evacuating relevant residents and regular clearing of quarry phase.

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 frequency 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 party

1 CSH Increased traffic jams within CSH Other users of internal roads of Harbour

2 CSH Blocking SLN storm water out fall Sri Lanka Navy (SLN) officers

3 LoP – Trial barge movement Damaging fish nets Fishermen at Wadduwa coast line

4 LoP – Trial barge movement

Deviation from recommended route Fishermen in Wadduwa area

3 LoP – Beach nourishment

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

4 LoP Disturbed livelihood due to construction Fishermen at Wadduwa coast line


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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 Increased traffic jams within Port area

Employ additional flagmen and reduced frequency of measuring empty trucks at weigh bridge andincreased traffic sings

Immediately (following day) to 1 month

2 Blocking SLN storm water outfall

Clear the outfall by removing quarry rock and deposited sand In a weeks time

3 Damage of fish nets

Compensation provided, Restricted movements to the route and improved warning signs. Code of practice for conflict solving is being developed.

Immediately,Reporting period and

Continue

4 Deviation from recommended route

Vessel crew awareness and monitoring through AIS facility at both ends commenced Immediately and 2 Weeks

5 Damage of fishing crafts by rock pieces on beach

Increase the rate of removing rock pieces and compensation

Immediately and 3 Weeks to continue from mid August

6Disturb access for livelihood by constructional activities

50% of recommended compensation was paid Four months and completed in September, 2009.


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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 and m anagement of en vironmental m itigation i s c arried out by the 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, submarine pipeline and breakwater toe trench• Underwater rock removal for the re-routing sub-marine pipeline trench• Reclamation and surcharge for breakwater and the Contractor’s Working Area (CWA)• Establishing office complex, limited accommodation and construction infrastructure• Commissioning sea route material haulage from LoP, Wadduwa to Port site, Colombo• Stockpiling of quarry run, quarry armour, Core Loc and Tetrapod at the LOP• Operating the Contractor’s main quarry at Dodangoda

The environmental mitigations and monitoring actions included:-• Use of 100% dredged material for reclamation avoiding impact of off-site disposal • Continuous protection of existing outfalls during reclamation and construction of CWA• Continuous control of dust and traffic at site operations and during haulage• Implementing a waste management scheme • Beach stability monitoring and nourishment at LoP• Maintain a healthy d ialog with f ishing c ommunity at LoP ; to m inimize adverse impact on t heir

living due to the Works• Implementing alternative measures to avoid adverse impacts due to 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 high swell caused beach erosion, spontaneous dust emission and irregularities in maintaining existing storm water out falls.

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 with 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 impactsat t he Colombo Port s ite a re w ithin t he s tipulated levels ex cept noise, which is ex pected to reducewith progress of works. How ever the Works experienced increasing turbidity (sediment plume), water heavy m etals c oncentration at the site a nd sediment he avy m etal levels f urther N orth of s ite comparing 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 Environmental impacts during 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• Re-routing of sub marine pipe line• Demolition of remaining SLPA buildings and 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.


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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 Co., Ltd, E nvironmental 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 DepartmentEIAR Environmental Impact Assessment ReportEMP Environmental Management PlanBEMR Biannual Environmental Monitoring ReportQEMR Quarterly Environmental Monitoring ReportIEER Initial Environmental Examination ReportCWA Contractor’s Working AreaIWA Initial Working AreaLoP Loading Out PointTSHD Trailer Suction Hopper DredgerBOD Biochemical Oxygen DemandCOD Chemical Oxygen DemandDO Dissolve OxygenSSC Suspended Sediment ConcentrationTSS Total Suspended Sediment


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Annex I

Compliance and Impact Confirmation Monitoring Schedule of the Works


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Annex II

Sewage and Domestic Effluent Discharge Plan at Port site, Colombo.


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Annex III

Site Audit B ased LoP North Beach Profile Monitoring Survey R esults sinceApril, 2009


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Annex IV

Periodic Water Quality Monitoring Results at LoP


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Annex V

Results of CCD Stipulated Beach Profile Monitoring at LoP


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Annex VI

Comparison of Measured (2009-2nd quarter) and Baseline Water Quality Levels at Port Site, Colombo and Action Limits as given in the EIAR.


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Annex VII

Comparison o f M easured ( 2009-2nd quarter) an d B aseline S ediment Q uality Levels at Port Site, Colombo and Action Limits as given in the EIAR.


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Annex VIII

Location M ap of Dwellings within 500m Radius f rom Taegil Quarry, N ehinna, Dodangoda.

sri: colombo port expansion project · sri: colombo port expansion project prepared by scott ......

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