technical specification of emp

7/28/2019 Technical Specification of EMP

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4. Environmental Management Plan (EMP) K hoch Qun l Mi trng

The Contractor will be required to implement all environmental requirements outlinedin VI, refer specifically Section VI Work Requirements (Supplementary Information)

Environmental Management Plan, and any requirements given on the Drawings

[refer specifically to the General Notes drawing,. and all environmental requirementsgiven in the Specification. The actions resulting from the compliance of clauses inEMP are incidental to the Works (except for the items provided in the Bill ofQuantity) and no separate payment for these items will be made.

Nh Thu s c yu cu thc hin y tt c cc yu cu mi trng cphc tho trong mc VI, tham kho yu cu k thut mc Section VI WorkRequirements Yu cu cng vic(Supplementary Information -Cc thng tin b

sung)- Environmental Management Plan -K hoch qun l mi trng, v bt k ccyu cu no c a ra trong cc Bn v(tham kho yu cu k thut ti Bn vCh Chung ) v tt c cc yu cu k thut mi trng c a ra trong Yu cuk thut. Cc tc ng dn n kt qa t vic p ng cc khon mc ca EMP l

s b sung cho Cng vic (ngoi tr cc mc c cung cp trong BOQ) khngthanh ton ring bit cho cc mc

Supplementary Information Cc thng tin b sung

The Environmental Management Plan is the same for all Contracts, Contract CV-A1A/PMU-W,CV-A1B/PMU-W, CV-A1C/PMU-W and CV-A1D/PMU-W

K hoch qun l mi trng p dng chung cho cc hp ngENVIRONMENTAL MANAGEMEMENT PLAN

K hoch qun l mi trng

1.0 Introduction Ch dn

The Environmental Management Plan (EMP) forms part of the Bid Documents and shall beconsidered alongside the Specification. Thereby the prescriptions detailed in the EMP aremandatory in nature and also contractually binding on Contractor. The EMP will also beequally applicable to Subcontractors including nominated Subcontractors, if any. The mainContractor will be responsible for the compliance with the requirements of the EMP bySubcontractors including nominated Subcontractors. With the assistance of theEngineer, the Employer/Client shall monitor the compliance of the EMP implementation

by the Contractor.

Cc mu biu v K hoch qun l mi trng l mt phn ca HSMT v phi c xemxt k lng da vo c tnh k thut. Do nhng quy nh chi tit ca K hochQLMT c tnh cht bt buc v cng rng buc Nh thu bng hp ng. KHQLMTcng p dng tng t vi cc Thu ph bao gm cc Thu ph ch nh nu c. NhThu chnh c trch nhim v vic tun th cc yu cu v KHQLMT ca cc Thu phbao gm c cc nh Thu ph ch nh

NDTDP Phase 1 Map Bn Giai on 1 ca D n


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2 Section VI. Works Requirements

The bidders are advised to carefully consider the EMP requirements when preparing thebids and pricing the items of Work. The prescriptions and clauses detailed in the EMP areintegral part of the specifications for relevant items of Work unless separate items are

included in the Bill of Quantities. Separate payments will not be made in respect ofcompliance with the EMP. In case the Contractor or his Subcontractor fails to implementthe EMP recommendations, the Engineer shall take necessary action(s) to ensure that theEMP is properly implemented and/or to rectify the damages caused by such negligence.Any cost thus incurred will be recovered from the Contractors payments.Cc nh thu c khuyn co nghin cu k lng cc yu cu ca KHQLMT khichun b HSDT v t gi cc hng mc cng vic. Cc quy nh v cc iu khontrong KHQLMT l phn khng th thiu ca cc yu cu k thut cho cc hng mc linquan ca Cng vic tr khi cc hng mc cng vic ring c bao hm trong BOQ.Cc thanh ton ring bit khng c tr cho vic tun th cc kha cnh ca KHQLMT.Trong trng hp Nh thu hoc nh thu ph khng thc hin y KHQLMT, K s

trng s c cc hnh ng cn thit m bo rng KHQLMT c thc hin y ng n v/hoc sa cha cc h hi gy ra nh s s sut. Bt k chi ph no nhvy s c thu li t cc thanh ton ca Nh thuThe Contractor shall assist the Engineer and Environmental Officer to discharge his dutiesas required in the EMP implementation by-(a) Maintaining up to date records on actionstaken by the Contractor with regard to the implementation of EMP recommendations

Nh thu s tro gip K s trng v nhn vin mi trng hon thnh trch nhimnh yu cu trong KHQLMT y bng cch duy tr ti ngy ghi chp cc hot ngdo Nh thu thc hin lin quan n vic thc hin y KHQLMT

(a) Timely submission of reports, information and data,Vic trnh mt cch kp cc bo co, thng tin v d liu

(b) Participating in the meetings conveyed by the Engineer, andTham gia cc cuc hp ca K s trng, v(c) Any other assistance requested by the Engineer.

Cc h tr khc do K s trng yu cu.The Contractor will provide monthly reports to PMU-W on the implementation of therequirements contained in this EMP and the results of the environmental performancemonitoring.

Nh thu s cung cp cc bo co hng thng ti PMU-W v vic thc hin y ccyu cu bao hm trong KHQLMT v cc kt qu quan trc mi trng.

Construction Activities mostly comprise:Hot ng xy dng bao gm ch yu l :

a. Dredging/excavation No vt/ o tb. Disposal of dredged materials Vn chuyn i cht thi no vt

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Section VI. Works Requirements 3

c. Construction of Diversion Dike Xy dng nn dngd. Construction of Groynes Xy dng cc tuyn g. Operation of construction camps Hot ng ca ln tri cng trng

xy dng

2.0 Construction Camps Ln tri cng trng xy dngContractors Camps will be located in areas that minimize disturbance to surrounding landuses; suitable solid and liquid waste handling/treatment systems will be implemented byContractor to minimize impacts to the surrounding environment.Cc ln tri s c t nhng khu vc gy nh hng nh nht ti t ai s dng

xung quanh; Nh thu s thc hin y cc h thng x l cht thi rn v nc thi nh hng nh nht n mi trng xung quanh.

3.0 Surface Water Quality Cht lng nc b mt

The Red River has long been mined for sand and gravel for construction aggregate.

Sand mining typically involves cutter suction dredges pumping materials to shoreline areason the river side of the main flood dyke . In some areas, sufficient sand deposits haveoccurred over time or represent naturally infilled former river channels, thereby permitting,on-shore mining of materials. Subsequently, these dredged sediments have been used forseveral beneficial uses: construction aggregate, infill of natural depressions and creation ofagriculture areas on the River side and inside the main flood protection dyke.

The extensive sand mining, both in-river and along select shorelines reflects the naturalsediment dynamics of the Red River, resulting in extensive shifting of channels, creation of

bars and sand islands, creation of elongated shoals parallel to the river course, and infillingof former channels; all representative of a dynamic sediment regime with significant

deposition/accretion processes.While a history of sand mining provides anecdotal information regarding the Red Riversediments, the detailed design of Component 1 has included the drilling of numerousgeotechnical boreholes with associated particle size analyses. Some of these boreholeswere drilled in the River sections to be dredged; others in the sections in which groynesand bank protection were to be constructed. Results of the particle size analysisconsistently indicated Red River sediments can be best described as medium to coarse-sized sand materials, with limited to no organic content and a very low silt-clay content(typically less than 5%; often less than 2%).

The lack of heavy industry along the Red River, except in select locations, and the lack ofsignificant urbanization results in a limited input of organic materials and industrial/urbanwastewaters and industrial discharges; i.e., sources of trace metal and trace organicsediment contamination. The overwhelming occurrence of medium to coarse sandscombined with a low organic content equates to a limited potential for sediments toaccrete contaminants. While anthropogenic inputs of contaminants may be limited, coarsesands and gravels may contain concentrations of trace metals due to natural mineralizationthat are higher than some freshwater sediment quality guidelines. In these cases,management of the sediments should be focussed subsequent re-use of the 3sediments,

particularly agricultural re-use.

Water quality was sampled at six locations (W1 to W6); sediment quality was determinedat nine locations (Se1 to Se9) and soil quality (So1 to So9) at nine locations. The soilquality was assessed as part of the disposal site selection process. Locations of the stations

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and test results within the Red River can be found in the Envrionemnal Survey Reportsubmitted separately. Sediment quality results meet Viet Nam Agriculture Soil QualityGuidelines, Dutch Sediment Quality Guidelines and are marginally higher than the lowerend of the Canadian scale, defined as the Interim Sediment Quality Guidelines. It can beconcluded the sediment quality is acceptable for either sub-aqueous or land-based disposal.

With respect to land-based disposal, there are no limitations imposed on re-use foragricultural soils.

4.0 Disposal of Dredged Material Loi b cht thi no vt

The selected disposal sites are low lying areas and indicates that there is usually a demandfor dredge material in a number of areas. Potential uses for the remaining materials aresuggested below:

(i) Agriculture:(ii) Natural Habitat Creation

(iii) Reclamation(iv) Other uses:

The best mitigation measure for any dredging project is operator best practices. Theoperators should ensure they minimize unnecessary bottom disturbance; do not dischargedredged materials beside the dredge rather than by pipeline to a disposal site; and do notover-dredge a channel section.

Where shoreline sections above the waterline or headlands are to be removed by land-based excavation, a berm of material should be retained during excavation in the dry.This berm should not be removed by a dredge until all of the shoreline section or headland

has been excavated to design depth and the exposed area is suitably clean and free ofdebris and detritus. The size of the berm should be minimized, but should be sufficient toconstrain the river during the excavation process.

Where shoreline sections are small (Kinh Thay River and Cam Rivers) and will be removedby cutter suction dredge, it may be necessary to temporarily deploy a silt curtain toconstrain loss of re-suspended materials during the site activity. Implementation of thismitigation measure will be a function of inspection and discussions between the SiteEnvironmental Supervisor and the Site Engineer.

Mitigation measures for Project Activities: Red River

Dredged channel materials from Area RR-1 will be barged to an upland disposal site in theport area of Viet Tri City. As the materials are coarse to medium sands, loss of finesduring de-watering should be minimal. No mitigation is proposed.Area RR-2: Cutter suction dredging is proposed, with discharge via a pipeline to Phu Chaugroin bottom to level up foundation this location for groin field construction. Based on

particle size distribution, sediments are described from borehole (K3, K4) records asloose fine-medium sand of medium density with very limited amounts of silt-clay (


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Area RR-3: Cutter suction dredging is proposed, with discharge via a pipeline to disposalsite in Van Nam commune, Phuc Tho, Hanoi. Four boreholes (XP1, XP2, XP5, XP6)were drilled immediately south as part of geotechnical investigations in support of groyneconstruction. Particle size analyses indicate the sediments are predominately in the

medium to coarse-medium category with some fine gravel. The silt-clay fraction wasless than 2%. To minimize the impacts of supernatant water from disposal site, high bermand cell and the diversion of the dewatering supernatant are made for further settling outof suspended materials before subsequent discharge to the River.

Area RR-4: Cutter suction dredging is proposed, with discharge via a pipeline to TienThinh groin bottom to level up foundation this location for groin field construction. No

boreholes were drilled in the river channel, but based on information from other areaswithin the Red River, channel sediments can be described as loose fine-medium sand ofmedium density. Particle size analysis of borehole soils (TT21 and TT22) within theheadland indicated soils were more than 85% medium sands. Pipeline is laid under the

river bed with the spray sprinkler opposite to the flow to avoid blocking traffic andminimize turbidity emission. If monitoring for total suspended solids indicatesconcentrations are more than 25% greater than ambient (upriver) conditions, themitigation measure will be containment curtain to minimize the emission of suspendedsolids downstream.

Area RR-5: Cutter suction dredging is proposed, with discharge via a pipeline to Hong Hagroin bottom to level up foundation this location for groin field construction. No boreholeswere drilled in the specific dredging zone, but four boreholes (HH3, HH4, HH8 and HH9)were drilled immediately south as part of geotechnical investigations in support of groyneconstruction. Particle size analyses indicate the sediments are predominately in the

medium to coarse-medium category with some fine gravel. The silt-clay content wastypically less than 2%, excepting one horizon in HH9 with a silt-clay content of 6%.Pipeline is laid under the river bed with the spray sprinkler opposite to the flow to avoid

blocking traffic and minimize turbidity emission. If monitoring for total suspended solidsindicates concentrations are more than 25% greater than ambient (upriver) conditions, themitigation measure will be containment curtain to minimize the emission of suspendedsolids downstream.

Area RR-6: Cutter suction dredging is proposed. A limited amount of dredged material isdumped to Lien Mac groin bottom to level up foundation this location for groin fieldconstruction (approximately 60,000m3), the remaining is dumped to disposal site in

Thuong Cat commune, Tu Liem, Hanoi (approximately 145,740m3

). No boreholes weredrilled in the specific dredging zone, but five boreholes (LM3, LM9, LM10, LM14 andLM15) were drilled immediately south as part of geotechnical investigations in support ofgroyne construction. Particle size analyses indicate the sediments are predominately in themedium to coarse-medium category with some fine gravel. The silt-clay content wastypically less than 2%. When dumping into Lien Mac groin bottom, pipeline is laid underthe river bed with the spray sprinkler opposite to the flow to avoid blocking traffic andminimize turbidity emission. If monitoring for total suspended solids indicatesconcentrations are more than 25% greater than ambient (upriver) conditions, themitigation measure will be containment curtain to minimize the emission of suspendedsolids downstream. When dumping into disposal site in Thuong Cat commune, Tu Liem,

Hanoi, to minimize the impacts of supernatant water from disposal site, high berm and cell

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and the diversion of the dewatering supernatant are made for further settling out ofsuspended materials before subsequent discharge to the River.

Area RR-7: Cutter suction dredging is proposed. A limited amount of dredged material isdumped to existing groin bottom in Hai Boi commune, Dong Anh, Hanoi. No boreholes

were drilled in the specific dredging zone nor in adjacent areas. Based on the extensivedata set from upriver locations, it has been assumed this dredging area consists of mediumsands with a silt-clay content of less than 5%. Pipeline is laid under the river bed with thespray sprinkler opposite to the flow to avoid blocking traffic and minimize turbidityemission. If monitoring for total suspended solids indicates concentrations are more than25% greater than ambient (upriver) conditions, the mitigation measure will be containmentcurtain to minimize the emission of suspended solids downstream.If residual material exists for which no beneficial reuse can be found, the following stepswill be implemented to dispose of it on land: The dredge disposal site location will bedetermined in discussion with local communities and local authorities. Key criteria for

identification of disposal site locations should include:

(i) Close proximity to dredge location to minimize transport movements(ii) Compliance with existing and future land use planning(iii) Minimal land acquisition effects(iv) Minimal effects on residential land and maximum separation from households(v) Minimal effects on productive land(vi) Minimal effects on terrestrial biodiversity(vii) Avoid areas with high groundwater table

5.0 Disposal Plan Matrix a cht ca t no vtThe disposal measures indicated in the following Materials Disposal Plan Matrix will beimplemented by Contractor at each disposal area:

a cht ca t no vt theo Bng a cht vt liu t no vt sau y Nh thu phithc hin mt cch y cc bi cha t thi no vt

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WaterwaySection

Channelindicators

(Km toKm)

Quantityof

Material(cu m)

Nature ofMaterial

DredgingMethodology

TransportMethodology

DisposalLocation

DisposalFacility

Design

EnvironmentalMonitoring

Requirements

for DredgingOperations

EnvironmentalMonitoring

Requirements

for DisposalOperations

Disposal FacilityManagement

Red River

RR-1: Viet TriCity

2+000 to3+000 42.500

Channel

sediments;medium tocoarse sands;

nocontamination

Cutter suction Barge Viet Tri PortSimple infill;

nocontainment

None required

One upriver andtwp downriverwater quality

montioring forTotal

SuspendedSolids withcriterion of

ambient +25%.

Dewater bargesat dredging site.No management

of disposal site

RR-2: Xa PhuChau

8+000 to8+375 and10+750 to

10+900

16.300

Channelsediments;medium to

coarse sands;no

contamination

Cutter suction Pipeline

River side ofmain flood dykein area proposed

for farmers'market

Constructberms on two

sides tomatch

existing bermheight

None required


montioring forTotal


ambient +25%.

Direct andcontrol flow of

de-wateringsupernatant to

River

RR-3: Xa VanPhuc/ Xa Van

Nam

27+000 to35+800 18.500


coarse sands;

nocontamination

Cutter suction PipelineUpland site onnorth side of

River

Constructberms on four

sides to

control areaof disposal

None required


montioring forTotal


ambient +25%.


de-watering

supernatant toRiver

RR-4:Xa TrungHa

31+300 to31+800

47.500 Channelsediments;medium to

coarse sands;no

contamination

Cutter suction Pipeline Infill of oldchannel on

north side ofRiver


sides tocontrol areaof disposal

None required One upriver andtwp downriverwater quality

montioring forTotal

Suspended



River


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Solids withcriterion of

ambient +25%.

32+200 to

34+000 350.000Headlandremoval Cutter suction Pipeline

Infill of oldchannel on

north side ofRiver



None required


montioring forTotal


ambient +25%.



River

RR-5:Xa HongHa

40+200 to40+974

17.700


coarse sands;no

contamination


Most materialsto be placed in

bermedshoreline area;some materials

also to bedisposed

between groynesalong south side

of River



None required


montioring forTotal


ambient +25%.



River

RR-6:XaThuong Cat

50+900 to53+200

206.600


coarse sands;no

contamination


Most materialsto be placed in

bermedshoreline area;some materialsalso to be usedas base for and

between groynesalong south side

of River



None required


montioring forTotal


ambient +25%.



River

RR-7: Xa HaBoi & Xa VinhNgoc

57+000 to58+900

56.000


coarse sands;no

contamination


Betweengroynes alongnorth side of

River



None required


montioring forTotal


ambient +25%.



River

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6.0 Required Environmental Mitigation Measures Cc bin php gim nh tc ng mi trng yu cu

Construction periodProject activities: dredging, disposal, bend cutting, bend correction, groin field, bank protection

Impacts on Environment Mitigation measures Implementtime

Water pollution:- Dredging and bend correction

activities generate sediments, result inthe increase of metal content and TSSinto surface water in the constructionsite;

- Making use of dredging material forfloor leveling in Phu Chau area (km 711), Tien Thinh (km30 -34), HongHa (km 40 -41), Lien Mac (Km 50-51) may contribute to water qualitydeterioration in Red river area;

- During the construction of bankprotection dams and groin field it isrequired to clear a part of the bank tomake a slope where the pile is driven

to stabilize the foundation. Scouredmaterials will mix up with the riverbedmaterials and may reduce theconcentration of heavy metals thatmay be present such as As, Hg, Pb,Cd, Cu Fe into the surface water;

- To mitigate impacts on water environment of dredging and bend correction, Contractor mustfollow:

Nh thu phi:+ Using cutter suction dredger to minimize the emission of suspended solids in water;SD tu ht nhm gim thiu s pht tn ca cht rn l lng vo nc

+ Using back hole for onland excavation, materials are transported by trucks;SD my xc gu nghch o trn cn, v/c VL bng xe ti

+ Construction period must be from October to June to avoid reproduction season of aquatichabitats;

Thi gian TC phi t Thng 10 n Thng 6 trnh ma ti to MT sng thy sinh+ Using containment surrounding dredgers downstream to minimize the emission of suspendedsolids in water;

SD tu ht bng h lu gim thiu s pht tn ca cht rn l lng vo nc- Mitigation measures for water environment from impacts of disposal: Cc BP gim thiu:+ Pipeline is used to transport dredged materials;

Dng ng ng chuyn bn ct no vt+ Berm and cell and the diversion of the dewatering supernatant are made for further settling out

of suspended materials; bao, nh v knh dn tiu nc b mt phi bo m cc cht ll tip tc lng+ At locations of dumping to groin bottom, containment should be placed downstream tominimize the emission of suspended solids in water;

Ti cc im p chn k, (VL) phi cha h lu gim s pht tn ca cht rn ll- Groin field, bank protection have no significant impacts on water quality. However, when bendcorrection is needed to guarantee the slope of bank protection and excavation is carried out to

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- Supernatant water from disposalsites and agitated deposits caused bydredging works increase the surfacewater turbidity, reducing sightdistance of aquatic species in lookingfor food and photosynthetic ability ofaquatic flora.

support groin field construction, soil spillage should be minimized to avoid water pollution;

- Mitigation for each dredging location is presented in Dredged Material Disposal Plan.Contractor should use Dredged Material Disposal Plan as instruction for dredging and dumping.If there is any change, Contractor must submit his comments to PMU-W for approval.

Impacts on traffic:- During construction period, thefollowing equipment may causeaccidents along the waterway:dredgers, pipeline to transfer dredgedmaterials, floating cranes, pilingequipment;

- During construction, equipmentsuch as floating cranes and pilingequipment are placed on the side ofthe river occupying portion of thewaterway access.

- Navigating at night will be riskywhen passing the construction site if

no advanced public information isprovided and captains loseconcentration in driving ships.

- Most suburban roads are 3-4m wideand earth roads are narrower whiletrucks are 2.3-2.5m wide. This willcause traffic jams when there are

- Waterway: must have staff to regulate traffic on Red River at recommended locations as below:Station 1 : is located in Bach Hac ward (Km 1+ 500)Station 2: is located in Son Tay waterway management station (Km 14 + 500).Station 3: is located at Km35 +300Station 4: is located in Hanoi waterway management station (Km 55 + 500).

- Roadway:

+ Co-ordinate with local authorities to guarantee traffic safety;

+ Assign traffic regulator at intersections, crossing, turns that are out of sight or meet mainroads;

+ Regulate maximum speed for vehicles on local roads;

- Construction methods:

+ With the section of channel re-profiling, backhole excavator is mainly used for digging andtruck or barger is used to transport the soil to filling disposal site;

+ It is done the same in bend cutting sections with extended construction sections (dig from themiddle out) and soil is not directly filled in the old channel when constructing this bend section inorder to ensure the navigation in the alignment.

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vehicle on opposite direction;

- Low traffic awareness of suburbanpeople and insufficient traffic signsand bill boards along the sub-urbanroad to be used in transportingmaterials cause high possibility ofaccidents in the Project area.

+ Pumping and cutting equipment are used for dredging area, before constructing, post buoys aredriven, positioning is done, pipelines are installed so that it will not prevent the navigation in thealignment, equipment are anchored to the right position and located within the extent of thebuoys.

+ The navigation is ensured for each construction section by the Management Unit when theycontrol, regulate, limit and instruct the construction units to implement and check regularly.

+ The construction will be done in the East half (left bank) first, then in the West one by eachconstruction section.

+ Men and vessels are arranged to instruct at the two ends of construction sections and buoys,temporary sign boards will be also arranged as stipulated.

+ Mud pipelines are installed underwater, at the bottom of river channel in construction sectionsby cutting and pumping and the disposal is not done on the same bank with the construction. .

Impacts of waste water, consumptionwaste, hazardous wastes:

- Daily sewage and solid wastevolume in the project area is relativelyhigh. Organic waste produces Total

Nitrogen, Total Phosphorous,ammonium and micro-organismsincluding Coliform, helminthic eggs.When disposed into the river, it willaffect the surface water quality in theconstruction area;

- If the cleaning, collecting of waste is

- Construction site should practice waste segregation and waste minimization. All materials thatcan be re-used and recycled should be segregated and sold to contract buyers.

- Residual wastes that cannot be recycled or re-used should be collected and disposed of in thecommune or city landfill.

- Contractor should coordinate with provincial peoples committee for authorization to usesanitary landfill. Other waste management measures that should be included by the Contractors intheir Waste Management Plan are as follows:

+ Contractors must cooperate with local urban environmental company. Portable toilets shouldbe placed in appropriate locations within a site.

+ All construction waste in the site will be collected into bins in the site. These bins will be

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not implemented on a serious andregular basis then the risk ofspreading diseases from workers tolocal people and vice versa (such ascholera, petechial fever) are likelyto happen. The process of gatheringwaste shall create living environmentfor intermediate creatures, insects

(such as rats, flies, mosquitos,cockroach, bacteria) to transmitdiseases, increasing the risk ofinfecting diseases for the communityat the site and vicinities;

- The decomposition process ofwastes emits foul odor (e.g H2S,NH4) causing nuisance to workersand people at the vicinity

- Hazardous wastes that are notcollected appropriately will increasepollution risks to water, soil andcause impacts on the surroundingcommunities.

transported by truck for disposal on a regular basis. Materials from construction except metal will be disposed in locations designated by the local government.

+ Vehicles transporting materials and aggregate must be covered properly.+ Machinery and equipment must be operated so as to minimize operational noise.

+ All construction waste in the site will be collected into bins in the site. These bins will betransported by truck for disposal on a regular basis. Materials from construction except metal

will be disposed in locations designated by the local government.+ Metal waste must be kept in stock on site then collected and stored at a designated location.The Construction Site must be maintained tidy and clean..

+ Hazardous wastes (spent solvents or used lubricants), oily clout, lights (tube, bulb), usedbattery must be classified and put in labelled bins and handled on regular basis by professionalagencies.

The Project Environmental Protection and Implementation Plan will provide detailed instructionon reporting, clean-up of spills and general response procedures. These will be also detailed inthe general operating requirements pursuant to various dredging contracts.

Impacts of noise and dust duringconstruction:- Workers on site face to noisepollution from construction machineryand equipment;

- Noise of pile driver when buildinggroin field needs is considerable. At

The contractor will have to ensure that all the equipment supplied for he project complies withthe Vietnamese Government standard for vehicle emission (TCVN 5939-2005). Prior todeployment, the equipment owner will have to submit service records of the equipment andresults of emission testing.

Work will be done mostly during the dry season and hence it is expected that bare areas will beexposed resulting to dusty condition. Dust suppression should be done especially if there arehuman receptors near the construction area.

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the distance of 15m, noise of piledriver is 96 101 dB, affectingdirectly workers on site;

- Noise of truck transporting materialsalong the sub-urban roads throughbend cutting areas will affect somepeople whose houses are located near

the roads;- Dust from the operation ofmachinery approximately 70.77kg/dayalong the stretch of 200km has smallimpact on workers. Transporting andunloading of materials during dryseason generate significant amount ofdust;

- Transporting of excavated materialswith no cover has the tendency tospill out particularly when passingrough roads. Fine materials will becarried by the wind in the surroundingenvironment, affecting the hygiene

and health of the people and workers

Selection of alignment of temporary access roads should take into consideration the presence ofresidences. As much as feasible, temporary access roads should be in places that are unpopulatedor sparsely populated. All vehicles transporting construction materials (sand, clay, cement,stones) should be covered to prevent dust dispersion. Installation and maintenance of mufflers onvehicles are necessary.

Concrete mixing plants and asphalt plants should be located over 200m from boundary of dense

residential sites. Plant emission will have to comply with the Vietnam Standard for Air Emission(TCVN-5939-2005). Otherwise, plant will have to to install emission control equipment.

Spoils stockpile area should also be located away from residential areas to protect them fromdust that may be generated by materials stockpile.

Compliance with air quality management should be one of the criteria for selecting equipmentsupplier and contractor. This condition should be stated in the Bid Document. As for stagingareas, this should specifically identified in the construction plan. This is the responsibility of thecontractor.

Regular sprinkling of water to exposed areas during windy conditions should be done by thecontractor.

Supernant water from disposal site:Dredged water can dilutes substancesin dredging material, especially metalcontents such as As, Hg, Cd, Fe

- gim thiu tc ng ca nc thi t cc bi cha vt liu no vt, cc bi thi cn phic p b bao, chiu cao ca vt liu no vt trong bi thi ti a phi thp hn chiu caocu b bao l 0,5m trnh nc thi chy trn ra cc khu vc xung quanh t bi thi, cc bi thi cn c chia tng qung ng di chuyn, gia tng kh nng lng ng bn t canc thi trc khi chy ngc li sng;- Ti cc v tr ming cng thot nc thi ra sng, cn gia c nn ming cng v thnh cngbng hc trnh xi l ti cc v tr ny.

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Labor safety:- During dredging operations theworkers will be exposed to hazards ofoperating heavy equipment, noise,heat, ergonomic stress. They will alsobe exposed to water hazards, such asdrowning;

- Surrounding people are likely toface indirect accidents because sitesare not covered appropriately (peopleare free to go in and out the site, nosignals and traffic instruction on localroads)

- Environment incidents are likely tohappen such as fire, short circuit, shipcollision, shipwreck, oil spillagebecause machinery is not maintainedon a regular basis, staff are not trainedlabor safety in construction orbecause of overloading, anchoring atwrong places, no lights or signals;

Worker safety

- All work site conditions will strictly follow Law of Labour, Ordinance of Labour Protection,and social insurance regulations. The Contractor will buy and maintain accident insurance forlabourers.

- All workers on the site shoud be trained and strictly follow safety regulations. Staff shouldfully implement the slogan Safe to work, work safe.

- Contractors are responsible to develop safety rules and procedures for labourers during forconstruction. The Manual of rules and procedures will be submitted to the Consultants and Clientto review and approve before carrying out construction.

- All staff must learn and understand approved safety procedures. The Contractor should ensureall workers follow these safety procedures when constructing civil works. All staff must beequipped with proper Personal Protective Equipment (PPE) such as hardhat, gloves, insulatedshoes, eyes protection glasses (for welders), toxic/dust proof gauze mask (for cement porters),etc. to avoid accidents.

- Contractors must assign experienced staff and specialized safety staff equipped with warningsigns, warning tape and other equipment to identify dangerous work areas.

- Contractors must arrange signs and remind workers to maintain safe working practices in alllocations.

- For a construction site, there must be a medical station, first aid supplies and medical officerswith appropriate professional certifications to treat people in time in case of accidents orsickness.

- There must be adequate equipment to respond to safety or fire protection requirements andthis equipment must always be ready to respond.

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- All construction vehicles on the water must be equipped with life bouys/rings that are regularlychecked to meet regulation.

- When working the night shift, there must be sufficient light to ensure propper and safe workingconditions.

Facilities and Equipment Safety

- Contractors must build a temporary fence to protect the site with security guards present 24/7to ensure site security, protect equipment and keep unauthorized people out of the site.

- The Contractor should prepare protocols and procedures to protect the general and areaenvironment, machinery and other equipment during the course of construction.

- The Contractor should carefully check the anchor system of the vehicles and signal systemssuch as floating beacons, signs, signal lights both on the river and on shore.

- The Contractor should develop regular maintenance and repair schedules for equipment andimplement as required.

- All equipment and machinery shold be operated according to instructions from manufacturers.

- Any lifting equipment and cranes should be located on the ground with solid structure or on afloating system with sufficient pressure bearing capability, be stable and be anchored by firm

anchoring system.

- All equipment operators must be trained properly and possess appropriate certifications.

- The Contractor should ensure social and public security within the site as well as nearby areas.Measures must be taken to manage staff and workers including registering temporary staff withlocal police.

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- The Contractor should regularly coordinate and cooperate with authorities and functionalagencies to ensure public security on the site.

- Contractors must possess the following types of insurance:

+ Insurance for all risks in construction

+ Insurance for labourers

+ Insurance for responsibility of the third party

+ Insurance for vehicles, equipment

+ Other insurance as required by the contract

Site Safety

- Transferring, handling and storage of equipment and supplies should be conducted carefullyduring construction, ensuring items are able to bear weights and are not affected by componentsunder construction or still to be built.

- Before removing formworks and supports for concrete components, the concete quality mustbe tested by sample or other methods accepted by Consultants.

- Avoid accidential hitting of materials or civil works during crane operatoins.

- Waterway vessels must not anchor or tie-up to site works during the course of construction.

- Any rebar or other internal structural components should be selected so as to not affect theappearance of the works, the pressure-bearing capacity and anti-corrosion capacity of the works.

- When floods or storms occur, all works must be supported and protected properly. Bankprotection or temporary road sections must be secured and covered properly.

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- Electricity cables serving construction and living purposes must be covered and located inappropriate locations, unaffected by working equipment.

- At working locations, ground wire and automatic circuit breakers must be installed.

- Electric cables must be selected to have sufficient handling capacity.

- Joints of electric cables must be appropriately joined and sealed with insulated waterproof

materials.- Electric equipment must have signs, ground wire and appropriately shielded. The Contractorshould strictly follow TCVN 4086 Electricity Safety in Construction General requirements

- Mobile fire extinguishers must be placed, strictly following regulations on fire protection forvehicles, equipment with fire risks. Activities at a site must be organized according to TCVNFire safety General requirements.

- The Contractor should regularly check technical and operational specifications of all machineryboth directly and indirectly taking part in activities of the site.

- To ensure safety for workers, all machinery and equipment should be operated in a a safemanner, following safety regulations.

Other Site Protection Issues

To protect the site and ensure nearby areas are not damaged and polluted during the course ofconstruction, Contractors must carry out the following measures:

- Identifying architectural components, utiliy services (particulary buried and overhad) andcurrent structures that would be affected by the proposed civil works. All sites should becarefully inspected and photgraphs taken starting civil works. The results of survey will bedocumented and and copies provided to Consultant and Client.

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- Spar buoys must be install in the river to desinate locations of the underwater works such aselectricity cable, water supply pipes, etc..

- Contractors must have remedial measures available at any time to address damage to works,architectural objects and utility services.

Maintenance of roads, yards, works, architectural objects and available service systems- Any roads, yards and works, buildings and available utility services affected by theconstruction activities will be maintained and/or repaired during the course of construction.

- Contractors will select suitable transportation routes, vehicle types and weight of vehicle loadsto be transported for the construction.

Safety and Fire Prevention Plan - During construction, Contractors must strictly follow safety standards according to TCVN5308 91. Specifically:

+ Waterway safety (Regulations on signals and signs for inland waterway 22TCVN 269-2000).+ Road safety.+ Safety in operation of a disposal site;+ Implement safety protection measures required for waterway activities.

+ No activity should affect operation and safety of waterway during a construction period.+ Ensure that all works, equipment and installed machinery does not result in dangerousconditions for the waterway and roadways.+ All tasks and activities are planned and coordinated according to requirements from the ProjectManager.+ The Contractor should always implement instructions from waterway and road authorities.+ Follow safety regulations on fire/explosion prevention.

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+ Before starting works, Contractors must conduct worker safety training and disseminate safetyregulations to all staff and workers in the construction site.+ Contractors must assign one staff person specialized in work safety with sufficient experiencein construction site safety. Safety staff should recommend on issues affecting workers safety andpropose measures to increase safety in construction.+ All equipment, vehicles operating in the construction should be registered and have operationalpermits. The Contractor should ensure all vehicles are functional and maintained regularly.+ Signage should be placed in the area of construction site and disposal sites.+ Dredging locations should be fully identified and traffic controlled using buoys and lights toensure vessels can operate. It may be necessary to set up a temporary fence or berm to limitspreading of disposed sands/mud and signs should be postsed to limit entry of people.

The Contractor should regularly ensure anchored vessels and other equipment do not impedepassing vessels.

All anchored vehicles must be located, with appropriate safety equipment according to currentregulations and instructions.

All barges to transport dredged materials, tug boats and other vessels related to dredging will beequipped with signal light while anchoring and moving on the river, following strictlyGovernment Circular No. 40/CP on waterway traffic safety.

Restoration of Land Occupied by

Construction Camp / Staging Area

The use of the construction camp/staging area is only temporary, hence, at the end of

construction period, the land will be returned to the landholder who can then resume the formerproductive use of the land. As such, the contractor should remove all equipment, structures,rubbish and obstructions and restore the land to its condition prior to use for construction. Thiscondition will have to be included in the construction EMP that will be prepared by theContractor.

For reach

locationaftercompleting

construction

Operation Phase- Landslide risk at locations of groin Within 01 year after completing construction, Contractor must supervise construction areas,

particularly groin filed and bank protector for every three months. In case of landslide,12/2013 12/2014

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Contractor must inform PMU-W and plan alternatives of rehabilitation to stabilize works.

- Shipwreck, collision, oil spillage - To minimize accidents due to collision, Contractor must place signs, bouys, at constructionareas of groin field and bank protection;- At locations of bend cutting that change channel at Lau Khe and Keo confluences, pile andchannel instruction must be placed;

- After completing construction, Contractor must inform River Management Stations No. 4, 6, 7,8 about works on Corridor 1;

- Contractor must co-ordinate with river management agencies in regulating waterway traffic onCorridor 1 if required.

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aftercompleting

construction

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21

The following environmental monitoring and reporting framework will apply to theproject: Each construction contractor will be fully responsible for all requiredenvironmental management and mitigation activities for the works under the project thatwill be specified in each contract, and the contractors will provide monthly reports to theEngineer and PMU-W on the implementation of the requirements contained in the EMP

and other enviromental requirements in the Contract.

Environmental Monitoring Program Chng trnh quan trc mi trng

Monitoring of Environmental Impacts

i) Monitoring Activities

To minimize pollution during the course of construction, the following monitoringactivities should be implemented at locations (short or long-term) identified by theConsultant (summarized in Table 1) and/or Client during the course of construction:

Water quality Noise

The Contractor is responsible for undertaking directly or by contract to appropriategroups, all monitoring activities. The type of monitoring equipment must be approved bythe Consultant. Results of all monitoring surveys must be reported to the Consultant.

Adverse environmental impacts attributable to the proposed waterway project areprimarily due to short term impacts during dredging operations, including equipment noise;air pollution from dredges, excavators and trucks; loss of re-suspended materials during

channel dredging (due to either dredging activities or pipeline/bare operations); and/or,loss of deposited materials during discharge of supernatant water from the disposal site.

Table 1: Location of supervising environment

No

.Location Code Coordinate

I. Air quality and noise

A. Red river

1Tay Dang commune, Ba Vi, Ha Noi nearby groin

construction Km 9+800AH1

X=440538.56

Y=2347491.51

2Van Phuc commune, Phuc Tho, Ha Noi nearby

groin construction Km 29 + 000AH2

X=456946.48

Y=2340058.71

3Trung Ha commune, Yen Lac, Vinh Phuc nearby


X=459388.28

Y=2343040.84

4Tien Thinh commune, Me Linh, Vinh Phuc nearby

groin construction Km 33 + 500

AH4X=461182.86

Y=2342756.25


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22 Users Guide

5Tien Thinh commune, Me Linh, Vinh Phuc nearby


X=462603.72

Y=2341431.58

6Hong Ha Commune, Dan Phuong, Ha Noi nearby


X=466398.89

Y=2337609.02

II. Water quality

Red River

1 Viet Tri Port, Km 0 + 000 WH1X=441767.17

Y=2356250.53

2 Viet Tri Port, Km 0 + 500 WH2X=441343.31

Y=2355984.71

3 Bach Hac commune, Viet Tri, Phu Tho Km 1 +800 WH3 X=441286.45Y=2354748.81

4Tan Hong commune, Ba Vi, Ha Noi, Da river,

Km 3 + 000WH4

X=440901.38

Y=2353233.38

5Lung Hoa commune, Chau Son, Vinh Phuc, Km 4

+ 000WH5

X=442157.93

Y=2352772.14

6 Phu Chau commune, Ba Vi, Ha Noi, Km 7 + 800 WH6X=441869.90

Y=2349290.36

7 Phu Chau commune, Ba Vi, Ha Noi, Km 11+ 000 WH7 X=441547.57Y=2346078.18

8Phu Xuan Commune, Phuc Tho, Ha Noi, Km 27 +

500WH8

X=455452.72

Y=2340404.06

9Van Ha Commune, Phuc Tho, Ha Noi, Km 34 +

500WH9

X=461650.85

Y=2341891.54

10Hong Ha Commune, Dan Phuong, Ha Noi, Km 39

+ 800WH10

X=464966.41

Y=2337611.39

11Hong Ha Commune, Dan Phuong, Ha Noi, Km 41+ 400

WH11X=466431.48Y=2337993.22

12Thuong Cat Commune, Tu Liem, Ha Noi, , Km 50

+ 500WH12

X=472819.32

Y=2334024.16

13Lien Mac Commune, Tu Liem, Ha Noi, Km 53 +

000WH13

X=475322.80

Y=2333297.69

14Hai Boi Commune, Dong Anh, Ha Noi, Km 56 +

500WH14

X=478534.98

Y=2334153.53

15 Hai Boi Commune, Dong Anh, Ha Noi, Km 58 + WH15 X=480348.67

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Users Guide 23

500 Y=2334192.75

Table 2. Components and their characteristics

No. Component Construction Operation

I Noise

1. Parameter Leq, Lmax, L50 Leq, Lmax, L50

2. Frequency 1time/3month, 1time/6month in a year after

3. Location 15 sites 15 sites

4. Standard TCVN 5949-1998

II Air quality

1. ParameterTSP, PM10, CO, SO2,

NO2, and Microclimate.TSP, PM10, CO, SO2, NO2,and Microclimate.

2. Frequency 1 times/month1time/3month in a year afterfinishing.


4. Standard QCVN05 :2009/BTNMTIII Water quality

1. Parameter

Temperature, pH,

Conductivity, Turbidity,

DO, COD, BOD5, TSS,

Cu, Zn, Pb, As, Cd, Hg,

Fe, Al, NO2-, NO2-, Cr6+,

PO43-, Salinity, Oil and

Grease.

Temperature, pH,

Conductivity, Turbidity, DO,

COD, BOD5, TSS, Cu, Zn,

Pb, As, Cd, Hg, Fe, Al, NO2-,

NO2-, Cr6+, PO43-, Salinity, Oil

and Grease.

2. Frequency

1times/month,

2samples/sites (surface and

2m down from surface)

3times/month in a year after

finishing, 2samples/sites

(surface and 2m down from

surface)


4. standard QCVN 08 : 2008/BTNMT

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24 Users Guide

ii) Other supervision:

- Supervise landslide at 09 locations, including:

+ 02 locations of bend correction: Km 3 + 200 v Km 33 + 500

+ 06 locations of groin field: Km 10 + 000; Km 30 + 000; Km 33 + 000; Km 35+ 500; Km 40 + 500; Km 51 + 500;

+ 01 location of bank protection: Km 56 + 500.

- Supervise traffic regulation of 04 stations during construction period

- Supervise accumulative impacts of Project and surrounding projects on water and aquaticenvironment