COASTAL CITIES ENVIRONMENTAL SANITATION PROJECT QUY … · quy nhon city environmental sanitation project management unit environmental impact assessment coastal cities environmental

BINH DINH PROVINCIAL PEOPLE'S COMMITTEE

QUY NHON CITY ENVIRONMENTAL SANITATION

PROJECT MANAGEMENT UNIT

E1295 v7

ENVIRONMENTAL IMPACT ASSESSMENT COASTAL CITIES ENVIRONMENTAL SANITATION PROJECT

QUY NHON CITY SUB-PROJECT

COMPONENT 1, 2 AND 5 (SUMMARY)

FILE COpy Quy Nhon, May 2010

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BINH DINH PROVINCIAL PEOPLE'S COMMITTEE

QUY NHON CITY ENVIRONMENTAL SANITATION

PROJECT MANAGEMENT UNIT

ENVIRONMENTAL IMPACT ASSESSMENT COASTAL CITIES ENVIRONMENTAL SANITATION PROJECT

QUY NHON CITY SUB-PROJECT

COMPONENT 1, 2 AND 5

INVESTOR

~~QN CITY ESP PMU ClAM 86c

T6 NgQc Chinh

(SUMMARY)

CONSULTANT

INFRA-THANGLONG CO.

Quy Nhon, May 2010

Environmental Impact Assessment 12010

TABLE OF CONTENT 1. INTRODUCTION .................................................................................................................................................... 2

1.1 ORIGINS .......................................................................................................................................................... 2

1.2 NAME OF THE PRO.IECT ............................................................................................................................ 2

1.3 INVESTOR ...................................................................................................................................................... 2

1.4 LOCATION ...................................................................................................................................................... 2

1.5 LEGAL AND TECHNICAL BACKGROUND FOR EIA .............................................................................. 2

2. SCOPE OF WORK ................................................................................................................................................ 2

3. BASELINE CONDITIONS ................................................................................................................................... 10

3.1 SOCIO-ECONOMIC CONDITIONS AT THE PROJECT AREA. ........................................................... 10

3.2 ENVIRONMENTAL CONDITIONS ............................................................................................................ II

4. ENVIRONMENTAL IMPACT ASSESSMENT .................................................................................................. 13

4.1 PRE-CONSTRUCTION PHASE ................................................................................................................ 13

4.2 CONSTRUCTION PHASE .......................................................................................................................... 14

4.3 OPERATION PHASE .................................................................................................................................. 19

5. MITIGATION MEASURES .................................................................................................................................. 26

5.1 COMPONENT 1 ........................................................................................................................................... 26

5.2 COMPONENT 2 ........................................................................................................................................... 28

5.3 COMPONENT 5 ........................................................................................................................................... 32

5.4 MITIGATION MEASURES FOR ENVIRONMENTAL RISKS ................................................................ 33

6. ENVIRONMENTAL MANAGEMENT PLAN ..................................................................................................... 35

6.1 ENVIRONMENTAL MANAGEMENT PLAN ............................................................................................. 35

6.2 ENVIRONMENTAL MONITORING PROGRAM ...................................................................................... 36

6.3 ENVIRONMENTAL QUALITY MONITORING ......................................................................................... 37

6.4 CAPACITY BUiLDING ................................................................................................................................. 38

6.5 COST ESTIMATION OF EMP IMPLEMENTATION ............................................................................... 39

7. PUBLIC CONSULTATION AND DISCLORURE ............................................................................................. 39

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1. INTRODUCTION 1.1 ORIGINS The Government of Vietnam has received a support to improve sanitation conditions in three coastal cities -Quy Nhon, Nha Trang and Dong Hoi in 01/2006. Quy Nhon sub-project contains 6 components and is divided into 2 phases (2006-2011, 2008-2013):

o Component 1: Flooding control, drainage and wastewater collection o Component 2: WWTP o Component 3: Solid waste management o Component 4: Resettlement o Component 5: Household Revolving Fund and School Sanitation Program o Component 6: Capacity strengthening, and support to implement the project

The main objectives of the project are to reduce the negative impacts on human and environmental health, to improve the urban landscape and to promote the economic development. The approved components of Phase 1 of the project are currently constructed, and Phase 2 components are in the design phase and will implement after the completion of the required procedures. 1.2 NAME OF THE PROJECT The coastal city environmental sanitation project - Quy Nhon city sub-project. 1.3 INVESTOR Binh Dinh Provincial People's Committee 1.4 LOCATION Project is carried out on the whole urban area of Quy Nhon city (16 wards) and Phuong Mai Peninsula. The city area is about 216,44 km2 (including NhO'n Chau island 3,5 km2

), in which urban area is 145,31 km2•

1.5 LEGAL AND TECHNICAL BACKGROUND FOR EIA 1.5.1 Legal background 1.5.1.1 Vietnam legal requirements for EIA

• Law on Environmental Protection was passed on 29/11/2005 by the National Assembly and went into effect on 12/1212005;

• Decree NO.12/2009/ND-CP which replaces Decree No. 16/2005/ND-CP and Decree No. 112/2006/ND-CP on Investment Management on Construction Projects;

• Decree NO.04/2007/N£>-CP dated on 29/01/2007 by the Government about Amendment and addition of some arlicles in Decree No. 6712003IN£)-CP dated on 13/6/2003 by the Govern ment;

• Decree No.140/2006/N£>-CP dated on 22/1112006 by the Government which regulates Environmental protection in designing, approval and implementation of development strategies, plans, programs and projects;

• Circular No.05/20081TT-BTNMT dated on 08/12/2008 by the Ministry of Natural Resources and Environment on Guidance for strategiC environmental assessment, environmental impact assessment, and environmental protection commitment,

• Circular No. 16/2009/BTNMT and No. 25/2009/BTNMT on Promulgation of Vietnamese national standards

• Circular NO.1 0/20071TT -BTNMT dated on 22/10/2007 about Guidance for assurance and control of the quality of environmental monitoring;

Environment standards and regulations 1.5.1.2 World Bank

o Environmental Assessment - Procedurel Regulations (OP/BP 4.01) o Natural Habitat (OP 4.04) o Cultural Resources (OP 4.11) o Public Consultation (BP 17.05)

1.5.2 Technical documents

Feasible Study report for Component 1 & 5 (VIWASE, 07/2009)

- Feasible Study report for Component 2& 3 «COM, 03/2010)

Pre-feasible Study Report for Coastal Cities Environmental Sanitation Project- Quy Nhon City Sub-project (VIWASE, 5/2005).

- The Aide Memoires of the Coastal Cities Environmental Sanitation Project, the Preparatory Mission for Quy Nhon sub-project;

- Information and data provided by the departments, units and agencies of the Province, City; 2. SCOPE OF WORK The construction facilities in Phase 2 are design and constructed In accordance with what has been done in Phase 1. The scope of work was proposed in the appoved FPS. Component 3 - Solid Waste Management,

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Component 4 - Resettlement and Component 6 - Capacity Building and Techinical Assistance are not included in this report as stated in TOR of Package QN6.20.1A. 2.1.1 Component 1: Flood Control, Drainage and Wastewater Collection Due to the shortage of funding, Component 1 is divided into two phases: Phase 2A will be done with the current funding from WB and Phase 2B might be done with the further funding from WB or other financial resources. Therefore, in the scope of this project until 2014, only phase 2A is carried out. Table 2-1 Summary of the proposed Quantities for the drainaQe and wastewater col/ection system in Phase 2A

No. Contents of investment Unit Quantity

I The primary drainage line

1.1 Phan Chu Trinh

RC pipe 2500x1400 m 139

Outlet unit 1

1.2 Che Lan Vien

RC pipe 2500x1400 m 335

RC pipe 4000x1500 m 114

Outlet unit 1 I II Secondary drainage line

11.1 Vu Bao

RC pipe 0600 m 72

RC pipe 800x500 m 78

11.2 Ham Nghi

RC pipe 800x400 m 302

11.3 LuGia

RC pipe 800x400 m 270

11.4 Nguyen Van Troi

RC pipe 800x400 m 245

I 11.5 Oien Hong

I RC pipe 0600 m 362

11.6

RC pipe 0600 m 168

11.7 Ngo May

RC pipe 01200 m 546

11.8 Dang Van Chan

RC pipe 0600 m 398

III Branch line

Round pipe uPVC ON200 m 12,500

IV Household Connection

=nding points for household connection Unit 900

v bililation of the drainage system and other works

I V.1 Replacement of inlet unit 460

V.2 Rehabilitation and refurbishing Tieu hamlet channel

Construction of the new RC plate bridge 9

Dredging and repairing the channel bed compo 1

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Environmental Impact Assessment lOlO

RC pipe 2500x1200 m 450

RC pipe 3000x1200 m 282

Phase 2B

1.2 Tran Anh Tong - Mai Hac De

RC pipe 1500x1500 m 336

RC pipe 2000x1500 m 449

II Secondary drainage line

11.1 Phan Oinh Phung

RC pipe 0800 m 310

11.2 Nguyen Van Be

RC pipe 0600 m 151

11.3 Oao OuyTu

RC pipe 0600 m 170

11.4 Ngo Thoi Nhiem

RC pipe 0600 m 189

11.5 Han Thuyen

RC pipe 0600 m 180

Ngo Quyen

RC pipe 0600 m 360

Le Hong Phong

RC pipe 0800 m 689

RC pipe 01000 m 386

11.8 Ly Tu Trong

RC pipe 0600 m 123

11.9 Tang Bat Ho

RC pipe 0800 m 374

RC pipe 01000 m 434 I

11.10 Nguyen Ou

RC pipe 0600 m 391

II. 3 street

RC pipe 0600 m 281

11.12 Nguyen Cong Tru

RC pipe 0600 m 175

RC pipe 0800 m 174

11.13 Pham Hong Thai

RC pipe 0600 m 427

11.14 Tran Hung Oao

RC pipe 0800 m ~i 11.15 HamTu

RC pipe 500x500 m 112

11.16 Pham Ngoc Thach

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RC pipe BxH=1400x1000mm m 651

Outlet unit 1

I 11.17 Do Doc Bao

RC pipe 0800 m 511

11.18 To Hien Thanh

RC pipe 01000 m 237

11.19 LyThai To

RC pipe 01000 m 283

III Branch line

Round pipe 0400 m 3,070

IV Household Connection

Suspending points for household connection Unit 5,100

V. Rehabilitation of the drainage system and other works I 846 I

V.1 Replacement of inlet unit

I V.2 Rehabilitation and refurbishing Tieu hamlet channel

Construction of brick pavement with average width of 3m along the two sides of m 2,700 the channel

VI Culvert, pressure pipeline, tertiary pipeline and pumping station

VI.1 Lines at peninsulas 1A, 1 B

HOPE pipe 0300 M 2338

+ Combined sewer overflow Unit 6

HOPE pipe 0300 M 100

Pump station PS13 (CS:300m3/h) unit 1

VI.2 Tran Quang Dieu ward line

HOPE pipe 0300 m 801

+ Combined sewer overflow unit 3

HOPE pipe 0200 m 700

Pump station PS13 (CS:150m3/h) unit 1

VI.3 Nhon Binh resettlement site and East of Dien Bien Phu street

HOPE pipe 0100 m 424.5

I I

HOPE pipe 0300 m 785.7 I Pump station PS14 (CS:300m3/h) unit 1 I

. Pump station PS15 (CS:3.6m3/h) unit 1 ..

Source: DecIsion No. 310/QD-CTUBNO The program may construct 6000 suspending pOints for household connection in the city: 2.1.2 Component 2: Wastewater Treatment Plant Component 2 is only carried in Phase 2 of the project which includes the design of two WNTP (1C and 2A) for serving the whole city:

- For the city center: 1) Direction to Phu Hoa lake: Collecting wastewater generated from the Western catchment area of the

centre, which is from Nguyen Tat Thanh street to the base of Ba Hoa mountain, to the wastewater treatment plant (WNTP) 1C which is moved to the location next to WNTP CEPT at Nhon Binh ward.

2) Direction to Thi Nai lagoon: collecting the north of the city, from Nguyen Hue street and the East of Nguyen Tat Thanh street to Dong Da street, and run along Ha Thanh river to WNTP1 B (or CEPT).

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- For Bui Thi Xuan ward and Tran Quang Dieu ward, wastewater is collected to WWTP 2A through pumping station 11 and PS 10.

2.1.2.1 WWTP 1C The plant design will incorporate the process chosen for plant 1 B (CEPT): Primary Anaerobic Ponds in combination with Trickling Trickling filters and Secondary Sedimentation Tanks. Table 2-3D . n WWTP1C eSlgn parameters or Parameter Unit 2015 2

DESIGN DATA

Population served (used for design) person 47.381 66.737

Effluent standard Ipcd 115 160

Average flow m"/day 5.449 10.678

Coefficient Kday 1.30 1.30

Max daily flow, Qmax m"/day I 7.083 13.881

Design flow, Qdesign m"/day 14.000

Per capita organic loading g/person/day 40 50

BOD loading kg/day 1,895 3,337

-'~~~tliifJlla( "" ..

Figure 2-1 Treatment Process ofWWTP 1C

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Figure 2-2 Layout plan of WWTP 1 C 2.1.2.2 WWTP 2A


lo)_C\lWlItl.9<'_GI9f 6N)GOMcQ4G~TflIHAtlAVIC

6ft~Qf"m~nl'f4SJIIII.J;H1' -W ~C!\PACm-J'Clf\ ie

4H1 CHQ I UNEHQ ;

G) =.,~ ___ T ®= @=:-='_A'!1OH1OIO @ =~~-G) =.::~_ (ill =,e @=~= ®== @:=V_IITA_T_ ®~":W/>f

G) :::..~r:,..~ ® _,_ .. c"_,c_,,

@ :"'_"':.v~ @:::...:: (jf=~ @

As analyses in FS of Component 2, oxidation ditch is selected due to: (1) meeting requirements of wastewater treatment, (2) easy O&M procedure, and (3) low land requirements. This process is also costeffective. Furthermore, it could be used for comparison with WWTP 1 B in order to find out the optimised process for further decision-making.

bl . fi WWT 2 Ta e 2-4 Destgn parameters or P A Parameter Unit 2015 2020

DESIGN DATA

Design population I person 15,528 22,304

Effluent standard Ipcd 115 160

Average flow Qaverage mS/person 1,786 3,569

Coefficient Kday 1.30 1.30

• Max daily flow, Qmax m"/day 2,321 4,639

Design flow, QdeSign m"/day 2,320 4,650 I Per capita organic loading g/person/day 40 50 BOD loading kg/day 621 1,115

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I I L ___ ~~ ____ _

JitfflMHti.Ul«

Fi ure 2-3 Treatment rocess of WWTP2A

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(1) ::.::;~.!".."" ® ::::..w.: tV :!!:.':'!..-,_ 0== @:'C::_ @ ::.::"r_

Figure 2-4 Layout plan of WWTP2A

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CD :::=~

® :=~:::: ® :::.::-

@=~~~~ ® ::,. ... ".;:.

@~:::::...

• • .... '" . , .. ':'

. . '. • ..... ::..~--_ 0." .... ----- :::::: .... o :::':Z' . :::.:.:;'

2.1.3 Component 5: Household Revolving Fund and School Sanitation Program

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' .. , . • " . • '.BP

The program will improve the sanitation conditions of toilets in 10 kindergartens, elementary schools and secondary schools.

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Table 2-5 c urrent situation 0 fh ' 'Yglene a t 10 ltd hi' h se ec e sc 00 S In PI ase 2

Name Pupils Teache I Toilet Location Situation r . i

! 1. Quy Nhan Kindergarten 500 44 15 2A Le Thanh TOng Completely I

I degraded !

I 2. Hoa Sen Kindergarten 158 17 4 35 Phan B¢i CMu Completely I

I degraded I

13. HlJ'ang Sen Kindergarten 290 23 5 . 32 Nguyen Trai Narrow, lack of WC

4. Hoa HOng 2 Kindergarten 100 6 2 295 Tran HU'ng £)90 Completely degraded !

5. Tran Quac Tuin Elementary 710 32 1 . 96 Tran Cao Van Narrow School 6. Nguy~n Vin ClF Elementary 854 35 3 15 Ly Thai TO Narrow, School degraded, lack

ofWC ! 7. Kim £)Ong Elementary School 555

I 2 4 TOng PhU'ac PhO Completely

I degraded 18. Trin HlJ'ng £)~o secondary 1100 55 2 Hoang QuOc Viet LackofWC • school i 9. Quang Trung secondary school 830 47 2 315 Nguyen Thi Minh Lack ofWC

Khai 10. LlJ'ang Th~ Vinh secondary 812 45 4 26 Le Quy £)On Completely school degraded

, . At thiS moment, Phase 1 of the project IS Implemented and the works for Phase 2 are proposed as following: T, bl 2 6 Wi k' h d , fI C t 1 2 &5 a e - or. Ing sc e ue or omponen ,

I Scope of work Component Component 1&5 2

Preparation of Construction Investment Project Report and Basic 10/2009 Designs Preparation of Detail Engineering Designs and Bidding Documents 0212010 08-09/2010 Selection and Approval of Construction Contractors 05/2010 02-03/2011 Discussion and Signing Contracts 07/2010 03-04/2011 Project construction 09/2010 04-05/2011 Deadline for Phase 2 05/2013 10/2013

3. BASELINE CONDITIONS 3.1 SOCIO-ECONOMIC CONDITIONS AT THE PROJECT AREA 3.1.1 Socio-economic conditions 3.1.1.1 Population and labour force According to statistics from Quy Nhon City Annual Statistic book, official population of the City in 2007 was 268,024. The population in 16 primarily urban wards is 242,002 occupying 90,3% of total population ofthe city. 3.1.1.2 Land-use The total of natural area of Quy Nhon city is 21644 ha, The internal area is 14531 ha and the suburb 7113ha, The urban construction land is 2682ha, The average is 120m2/person. 3.1.1.3 Culture - Education Quy Nhon City is one of the education centres not only of Binh Dinh Province but also of the south - central area of Vietnam. Quy Nhon Teacher's College has grown to be a university of multiple academic disciplines, having 15,800 students, including 14,500 full-time undergraduate students, with 2,000 students graduating annually, 3.1.1.4 Health-care services According to the statistics, diseases related to the hygienic conditions appear in Quy Nhon such as diarrhea, dysentery, petechial fever and mumps. T, bl 3-1 St t' fib f 'd 'd' 'Q Nh '20002004 a e a IS Ica num er 0 epi emlc Iseases In uy an In -Disease 2000 2001 2002 2003 2004 Typhoid 3 7 7 2 0 BaCillary dysentery 59 94 91 77 22 Amib dysentery 23 26 26 17 12 Dysentery syndrome 48 54 62 36 22 Diarrhea 107 90 85 50 31 Petechial fever 8 49 88 77 50

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VG virus Smallpox Pertusis Tetanus

! Measles Mump Influenza

Source: PFS (2006) 3.1.1.5 Economy

15 6 3 7 6 4 1 3

23 0 32 24 3 3

14 12 11 3 7 20 5 1 1 3 5 2 2 0 0 51 9 7 7 5 2

During the last few years, Quy Nhon's economy has achieved striking improvements. City resident's living conditions have gradually improved. Economic structure has changed positively from gains in the construction branch, industry and services and losses in the agriculture-forestry. 3.1.2 Drainage and wastewater treatment 3.1.2.1 Drainage system The existing drainage system of Quy Nhon City is a combined system for both municipal sewerage and storm water drainage. By the nature of this system, it is a gravity drainage system for storm water, with only incidental wastewater received from unregulated sources. In general, the drains and sewers have been constructed to convey storm water and waste water to the nearest receiving bodies (rivers, lakes or sea) without enough evaluation of the capability and capacity of the receiving sources (especially lakes) as well as without division in terms of catchment areas, so the system does not have a common planning and capability of the system and, therefore, it is limited. 3.1.2.2 Flooding Local flooding occurs frequently during the rainy season (from September to November) with high peak flows due to storm water runoff from the mountains to the City. Based on the recent results of tidal level analysis of Quy Nhon Hydrometeorology Station, the tidal level in the studied areas varied is not great, from 1,Om to 1.5m. In the rainy season (September, October and November), when the rainfall is high, the tidal level increased with the range of 0.3-0.7m. In general, the tidal impact on the drainage system is not significant because the tidal level is about 1.0m while most terrain of the city is higher than 2.0m, except the zones in the north of the city. 3.1.2.3 Household connection According to the socio-economic surveys carried out by VIWASE, there are 95.6% of households with toilets, in which toilets with septic tanks occupy 76.5%, semi-septic tanks 17.4%; the rest are flushing toilets, twoapartment toilets. Different from water supply, the ratio of households connected to the city network remains very low, only 23.3%. 3.1.2.4 Col/ection and treatment of domestic wastewater Domestic wastewater from the households connecting to the public drainage system is also not separated, collected and treated but discharged directly to the receiving water sources. Waste water together with storm water is discharged directly to the natural environments (pond, river and sea). 3.1.2.5 Collection and treatment of hospital wastewater Theoretically, the wastewater generated from public works (including wastewater of hospitals, hotels and public buildings, etc ... ) must be treated separately before being discharged to the drainage system. However, in reality, most public works have no or limited wastewater treatment prior to discharge to the drainage system. The reason offered for this lack of wastewater treatment is that the operation and maintenance (O&M) cost is too high and that this expense should be supported by state budget. Another reason given is that the wastewater discharge standards are not being strictly enforced. 3.2 ENVIRONMENTAL CONDITIONS 3.2.1 Air environment In January 2010, the environmental consultant signed a contract with DONRE to monitor the quality of air environment, water environment and sludge. r, bl 3-2 A' rt tth d f a e "qua Ity a e propose construe IOn sIte

No. Location Noise Dust PM10 S02 N02 Odor Time dBA mg/m~ -

i K1 Tang B<;lt Ho - Le Hong 73.9 0.964 0.102 0.087 0.048 - Rush-hour J Phong crossroad

K2 : Ph<;lm Hong Thai - Tran 74.4 0.875 0.090 0.072 0.048 - Rush-hour HU'ng £)<;l0 crossroad

K3 X6m Tieu canal 56.8 0.401 0.039 0.057 0.022 Mild Normal

K4 In front of Thanh Long 51.3 0.192 0.022 0.028 0.01 No Normal padoga, next to PS 10

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IK5 WlNTP 1 C site 57.3 0.321 0.023

jK6 WlNTP 2A site 54.1 0.268 0.031

iK7 North-West of WlNTP 1 C, 59.1 0.368 0.031 at the boundary of the plant

QCVN 05:2008 751 0.300 -Note: Component 1: K1, K2, ~ and Component 2: ~, Ks, Ke, K7 Conclusion:

0.066 0.031 No I

Normal

0.046 0.019 No Normal

0.066 0.029 No Normal

0.350 0.200

Except dust, all other requirements are satisfied. Because the site of WlNTP 2A is in a high elevation and has a low population density, the concentration of dust is still in the acceptable range. The dust concentration in the city center is 3-5 times higher than permitted in QCVN 05:2008. This could be easily explained by the climate and geological conditions of Quy Nhon. Sand in the soil surface layer and wind result in high concentration of heavy dust despite PM10 is low and stable. Furthermore, these points are very near to the construction sites of Component 1. In short, measures to mitigate impacts of dust are extremely important in the case of Quy Nhon. Background noise of the city center is quite high and nearly reaches the level of maximum permitted level (75dBA). Mitigation measures to reduce noise generated from construction activities should be taken into attention. 3.2.2 Water environment 3.2.2.1 Groundwater The quality of groundwater in WlNTP 1 C is rather good but there is signal of micro-organism and ammonia contamination. This amount of ammonium could be emitted from shrimp cultivation ponds because groundwater level is low (-1.0m). In contrast, the groundwater quality at WWTP 2A is not good as Coliform is 5 times and N-NH3 15 times higher than permitted. This means water is contaminated and therefore, more care should be taken to prevent more contamination from domestic wastewater in the construction and operation of WWTP 2A. r. bl 3-3 G d t rt t th t t" "t f VVWTP 1 C d VVWTP 2A a e roun wa erc ua Iry a e cons rue Ion SI e 0 an

i Groundwater pH BOD5 COD

- mgll

NN1 WNTP 1C 6.31 N/A N/A

NN2 WlNTP 2A 6.95 1.2 3

QCVN 09:2008 5.5-8. - 4

I 3.2.2.2 Surface water T.b134Srfi t rt a e - u ace wa er qua tryon H Th h' a an fiver

I Surface water

NM1 Discharge point of WlNTP1C 3km upstream of the INM2 discha~epc>int ofWNTP 1 C

I TCVN 5949: 1995 2 Subject to verification 3 Subject to verification

pH TO

. °c

7.61 31.1

7.61 32.4

SS Coli-

T·N N-NHa N-N02 /T-P form MPNI mgll 100ml

N/A 3 0.4 0.3 0.006 I 0.36

N/A 15 3.4 1.52 0.013 j 0.18

1500 3 - 0.1 1.0 I -

SS BOD5 COD T-N T-P Coli

DO S -form

mgtl MPNt mgtl 100ml

13 12 22 N/A 0.042 15 6

14 7 18 N/A 0.032 6.2' 9;)

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0.0081


NM3 At the intersection 9.26 30.7 23 18 34 N/A 0.251 30 4 between Ha Thanh river and Thi Nai lagoon

NM4 Proposed discharge point 7.3 31.4 19 28 54 N/A 0.053 120 7.6 ofWWTP2A

NM5 1km upstream of the 7.33 32.2 9 3 8 N/A 0.045 30 7.5 discharge point ofWNTP 2A

NM6 1km dovvnstream of the 8.36 29.3 10 8 16 1.7 0.089 9

i discharge point ofWNTP 2A QCVN 08:2008 (column B1) 5.5-9 - 15 30 - - 7500 !l Ha Thanh river's water quality IS qUite good. However, It does not meet the requirements of QCVN 08:2008, column B1 for surface water quality at the intersection between Ha Thanh river and Thi Nai lagoon and at the proposed discharge point of WWTP2A. At the intersection between Ha Thanh river and Thi Nai lagoon, the water is polluted because of the fishery activities and domestic wastewater from nearby households. At the proposed WWTP 2A outlet, the background concentration is higher than allowed in standards. This distortion is caused by ducks which are raised at Song Ngang bridge. Therefore, this sample should not be considered as a reliable result to represent for river water quality. 3.2.3 Biodiversity While the coastal area has a diverse topography, the sub-project area can be described as having very limited natural flora, fauna and habitats due to its urban development. Sub-urban portions of the sub-project area are used for farming, dominated by paddy rice. The common vegetation in unfarmed areas is brush and plantation of gum trees (Eucalyptus). The World Conservation Monitoring Centre (WCMC) includes the Quy Nhon Swamp on its list of sensitive wetland areas in Vietnam. This natural saline swamp is part of the Thi Nai lagoon complex located on the coast north of Quy Nhon City, in Nghia Binh Province. The swamp has an area 5,000 ha at high tide; 3,200 ha at low tide, with a 700 m wide channel that opens to the sea. 4. ENVIRONMENTAL IMPACT ASSESSMENT 4.1 PRE-CONSTRUCTION PHASE 4.1.1 Component 2 In the pre-construction phase, impacts are mainly from site selection and land acquisition requirements. 4.1.1.1 Site selection of WWTP 1 C On April 17th 2007, ON ESP PMU received a correspondence from Binh Dinh Provincial PC requesting relocation of WWTP 1 C from the proposed area at Phu Hoa lake because Phu Hoa lake and its surrounding areas are planned to be an ecotourism area. The alternative for WWTP 1 C location is decided because at the WWTP1 B, there is enough space for a new WWTP.

-"'~ ..... --....... ------- --,---------------1 ' J 1

I I e.\r~W)Hi:" If!! c.]' I I ,

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Figure 4-1 New location of WWTP 1C (expanded WWTP 18) This location consists of ponds and lagoons for aquaculture. The existing land area is over 12,8 ha. A buffer zone of about 300m is required to separate the proposed WWTP site from the existing residential area. Other sides of the WWTP site are adjacent to Nhon Binh Industrial Zone, Ca Dinh River and paddy fields.

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0.015

0.015

0.015


Adjacent to the west is Nhon Binh industrial park and the north is shrimp ponds. The buffer zone to the north is the shrimp ponds. Outside the buffer zones are the residents of Ward 2, 3, 4 with thousands of households mainly relying on agricultural and aquacultural productions. All the people here have tap water for drinking and recreation because the groundwater is polluted by the saline water. Although, the buffer zone is more than 300m, odors occur from the WWTP may affect the residents living in the North due to the wind direction. After a lengthy discussion with the PMU on this matter, it was recommended that the main building platform level should be established at +2.50m. 4.1.1.2 Site selection of WWTP 2A WWTP 2A is proposed to be located at Tran Quang Dieu ward. The current situation of the site is aquacultural ponds with the effective area of 2.7 ha. This area is surrounded by hills and paddy fields. The buffer zone is ensured to meet TCVN 7222:2002. The location is agreed by World Bank delegation and Binh Dinh Province People's Committee in PFS report. East of the plant is mountainous, with a cattle farm of veterans and two fishing lakes around 1 ha. Surrounding the area is eucalyptus trees and brushwood. Next to the WWTP is a stream. In the dry season, the stream becomes dry and in the rainy season, it receives water from the mountains and Phu Tai IP, then flows over the banks of the stream to Cau Ngang river then to Ha Thanh river. Facing with a mountain at the east is the paddy field about 100ha which belong to Block 3 and Block 4, Tran Quang Dieu Ward, about 1km away from WWTP. Residents lives by planting rice and vegetables and use mainly the groundwater for drinking and recreation. In summer time, wind flows from the northwest strongly that is the direction from the WWTP to residential areas Therefore, it needs to pay attention to the odor impacts and its spreading influence over this residential area (including Thanh Long Temple and Tran Quang Dieu secondary school) and protect the existing groundwater resources. 4.2 CONSTRUCTION PHASE 4.2.1 Component 1 To bl 4-1 E' t I . t t· h f a e nVlronmen a Impac assessmen In t e construction phase 0 Component 1

: Theme Source of impacts Note Impact assessment

1 Landscape Excavation activities All routes Insignificant, short-term, managable

Visual obstruction caused by Roads in the city center or place of tourist's Insignificant, I construction equipments interests short-term,

managable I Wrong clearance and I Roads in the city center or place of tourist's I nsig n ificant, ! leveling interests short-term, I manaQable Green space clearance Special care in Dong Da street Insignificant,

Most of the construction works for drainage short-term, system is done in the roadway managable

Lack of management of Roads in the city center or place of tourist's Insignificant. excavated materials interests short-term,

managable Bad recovery of road surface Roads in the city center or place of tourist's. Insignificant,

interests short-term, manaoable

2 Noise and vibration from Listed in 3.3.1.4 Insignificant, Noise leveling, construction . short-term,

equipments and transport managable means Construction of pumping Roads in city center station Excavation activities Roads in city center Insignificant,

short-term, managable

3 Construction equipments Roads in city center Insignificant, Air pollution and transport means, Especially for the special climate of Quy short-term,

digging activities Nhon: sandy and windy manaaable Transportation speed is Small roads in the city center Insignificant, eliminated short-term,

I manaoable

14


Odour caused by littered Transport route , Insignificant, septage from trucks ! short-term,

managable Odors caused by dredging Small scale impacts to local residents. Insignificant, manholes short-term,

man~able Temporary storage of Small scale impacts on site Insignificant,

i dredging septage/sludge short-term, managable

4 Excavation activities Listed in 3.4.1.4 Moderate to Dust . Especially for the special climate of Quy high, short-term,

I • pollution Nhon: sandy and windy managable

Storage of materials Excavated materials in the construction of Moderate to drainage and wastewater collection system high, short-term, are mainly composed "clean soil", which managable are used for leveling. The remaining

!

quantity (340,428 m3) is removed to

landfill. Transport and handling of Moderate to materials high, short-term,

mana~able 5 Assess routes are Tran Hung Dao, Le Hong Phong, Tang Bat Moderate, short-Impacts on disconnected by storage of Ho, Pham Hong Thai, Tran Cao Van, Phan term, managable local materials Dinh Phung business Long construction time All routes Insignificant,


Bad recovery of road surface Insignificant, short-term, managable

Dust generated from Reduce the product quality (especially with Insignificant, excavation works food & drink shops) short-term,

managable The access to shop is Shopping streets such as Hoang Van Thu, Insignificant, inhibited by temporary Mai Hac De va city center streets short-term, storage of excavated managable materials

6 Material washing Construction sites Insignificant, Local short-term, flooding managable

Pumping water from Construction sites Insignificant, dredging holes ' short-term,

managable Lack of diversion measures Construction sites InSignificant, of flow short-term,

managable 7 Construction waste Insignificant, Solid waste short-term,

managable Domestic waste of workers About 9-15kg/day InSignificant,


Asphalt About 5,362 m3 InSignificant,

It is considered hazardous waste and must short-term, be disposed by a legal company, with the managable acceptance with WB, DONRE and ISMC

Septage and Phu Hoa About 19,260 m"- Insignificant, channel The impacts are assessed previously short-term,

managable

15


8 Construction activities cause Shopping streets such as Tran Hung Dao, Insignificant, Traffic safety traffic jam and city center streets Lu Gia, Vu Bao, short-term,

Dien Hong, Le Lai, Nguyen Van Troi and managable Ngo May

Construction means do not All transportation routes Insignificant, ensure safety when moving short-term, in the streets managable Activities of transportation All transportation routes Insignificant, means at the construction short-term, site managable Lack of signage, lights for All transportation routes Insignificant, traffic guidance short-term,

managable 9 Excavation could cause 5andy soil in Quy Nhon is the main issue Insignificant, Damage to damage to nearby houses, causing landslide short-term, nearby especially regards to managable buildings geological conditions of Quy

Nhon 10 Lack of lights for traffic Affect people who are living along the road Insignificant, Public health guidance short-term, and safety managable

Lack of covering of the Affect people who are living along the road I nsig n ificant, transportation means short-term,

managable Air and dust pollution is Affect people who are living along the road Insignificant. especially harmful for public short-term, health managable Epedimic in the transport Affect people who are living along the road Insignificant, route short-term,

managable 11 Domestic wastewater from About 3-4m"/day (30-50 workers). The Insignificant, Water workers main compositions in domestic wastewater short-term, pollution are fecal, 55, BOD/COD, N, P and managable

pathogens (Coliform, E.Coli). This untreated wastewater could pollute the surface water.

Polluted stormwater of high High concentration of 5S. Special care in Insignificant, concentration of oil and the construction of infrastructure of Bau short-term, grease, and 55 Sen lake and Xom Tieu canal, preventing managable

from washing materials and filling the lake/canal

Leakage of septage from High concentration of pathogens, 55 and Insignificant, transporting trucks organ ic matters short-term,

managable 12 Lack of safety equipments Insignificant, Working for workers in the short-term, safety construction phase managable

Workers do not follow the I nsig n ificant, requirements of working short-term, safety managable Lightning, fire, short circuit Insignificant,


13 Traffic congestion Listed in 3.3.1.4 Insignificant, Cultural Dust and air pollution short-term, asset Noise managable

4.2.2 Component 2 Table 4-2 EtA in construction hase of Com onent 2 NO. Impacts Notes Description

16


1 Air environment Noise and vibration Affect directly to workers and nearby Short-term, of construction households insignificant equipments and Far from residential areas machinery Dust pollution in Huge amount of leveling materials Short-term, leveling, However, it is far from the residential insignificant construction & area (at least 500m) material storage Air pollution in Affect directly to workers and nearby Frequent and transporting households medium-size excavated Because of high volume of excavated materials: dust, materials for leveling (VVWTP 1 C: S02, CO2, CO, NOx 534,OOOm3

)

The average number of transporting trucks is 415 trips/day

2 Water environment - Surface water Domestic Small flowrate Small flow-rate.

wastewater from Impacts can be workers reduced by using

septic tank. Polluted stormwater Heavy stormwater can cause local Moderate, short-which contains SS flooding term and

manageable Washing water High concentration of SS and oil. Small, short-term

and manageable Temporary ASSESSED IN EIA OF CEPT High concentration discharge PLANT (2008) of organic matters

and nutrition; High loading; High dispersion capacity

- Groundwater Excavation Groundwater quality disturbance Small but long-term activities However, this impact is not impact

significant Wastewater Long-term, wide-leakage in spread because of construction of short distance to pipeline water supply Impacts of domestic Small loading and construction solid waste on

oundwater 3 Solid waste Insignificant, about 7-10kg/day ~ificant. short-

waste (equivalent to 20 workers) managable Construction solid Could be reused or sold Insignificant, short-waste term, managable Hazardous waste Oil and grease, container of solvent I Insignificant, short-

I term, managable Dredged sludge Suitable for agricultural purposes Insignificant, short-from shrimp ponds term, managable

5 Traffic safety Traffic congestion This impact is significant because the Medium-size, due to activities of transport routes are the main route to especially in the construction assess the city center from outside. conditions of high Construction means Heavy traffic, lacking of transport wind speed and high do not ensure signs, dust from Ba Hoa Mountain concentration of safety when moving and dangerous crossroad as £>6ng dust. in the streets £>a - Hoa LU' and £>6ng £>a - Tran Only in the

17


Activities of HLl'ng £)~o construction phase, transportation means at the construction site Traffic accidents

6 Working safety Lack of safety Could be totally eliminated Medium-size, short-equipments for term workers Environmental pollution

~res accidents

7 Local life Far from residential areas Low, short-term 8 Damages to near- Construction phase Far from residential areas Short-term,

by buildings insignificant because of far distance from residential areas

9 Public health and Chemical spillage • Far from residential areas Short-term, safety Domestic waste insignificant

Lack of solid waste because of far management distance from Workers' activities residential areas

ComponentS 4.2.3 To bl ae4-3A f t I . f t f h It" t ssessment 0 envlronmen a Impacts 0 cons ruction 0 sc 00 01 e s an dfi . Tt' aCICIlies

me Source Description Assessment Mitigation

Monitoring? measure?

1. Air and noise Noise and vibration Affect the Temporary, Yes Yes pollution from excavation, classes small scale

leveling, Noise limitation construction is SOdS (06-18h) machines and transportation means Dust from leveling, Affect to Temporary, Yes Yes construction and teachers and low and storage of pupils manageable excavated However, with materials low construction Air pollution from loading, these transporting impacts are excavated temporary, low materials: dust, and manageable 802, C02, CO, NOx

2. Water environment

- Surface Domestic Low generation Low, Yes No water wastewater of rate of 2S0-3S0 temporary and

workers I/day (5-7 manageable workers)

Stormwater Local flooding Low, Yes No passing by the temporary construction sites

Groundwater Excavation Do not disturb Low, Yes No activities groundwater temporary

levels

18


3. Solid waste Domestic solid I Insignificant, Low, Yes No waste of workers . about 3-5kg/day insignificant

! Collected • together with the

I school's waste bin

Construction waste Reuse for Low, Yes No I leveling. insignificant

Hazardous waste Containers of oil, Low, Yes No . grease, gasoline insignificant. and solvents at low generation rate i

4. Pupil safety Storage of Falls into the Moderate, No No • materials and holes, especially manageable excavated in kindergarten materials and elementary Dredged holes schools

4.3 OPERATION PHASE 4.3.1 Component 1 Ta bl 4E' t ,. t t f f f r . C e4- nVlronmen a 1m oac assessmen 0 opera lona ae IVI les m omponen t 1

I Assessment

I

Impacts Sources

1. Landscape Improve the city landscape Improve the landscape at Bau Sen lake Improve the landscape at PM H6a canal

2. Noise Operation ofpumping stations 3. Odor Operation of pumping stations

Reduce odors from waswater spilling

4. Local flooding Reduce the risk of floodinQ 5. Surface water Temporary discharge

Operation of pumping stations 6. Dredged sludge Sewer system 7. Public health Improve the public health 8. Occupational health H2S, CH4 in pumping stations and and safety seweraQe system

Note: L (low), M (medium), H (high) 4.3.2 Component 2 4.3.2.1 Impacts on surface water

Negative Positive Short- Long- Short- Long-term term term term

H H

H

L L

H

H M

L M

H L

I

The modeling of surface water quality of Ha Thanh river and forecasting its impacts on Thi Nai lagoon is very important, in terms of effects on local aquaculture. This report applies Streeter-Phelps model to simulate the pollution dispersion in Ha Thanh river because this model is suitable with hydrological conditions at Quy Nhon. The parameters for modeling are BODs, DO and total coliform. The purposes of modeling:

Determination of distance from the discharge point of WVVTP to the location that Ha Thanh river's quality meets QCVN08:2008 (B1): BODs = 15mg/l, DO 2: 4 mg/l and total Coliform = 7500 MPN/100ml Determination of the quality at the river mount to Thi Nai lagoon which is about 2.5km far from the WVVTP1 C discharge.

The ultimate goal is to propose appropriate mitigation measures. Locations of discharge pOints of WVVTP in Ha Thanh river are simplified as following:

19

i

i

I


Oi.6m.xa NMXlNT

IS

Figure 4-2 Locations of discharge pOints in Ha Thanh river

20

Environmental Impact Assessment 201 ()

Table 4-5 Baseline data of Ha Thanh river Outlet of 1C Outlet of2A QCVN

Parameter Unit High-tide low-tide High-tide I Low-tide 08:2008

I I i

(Column B1)

T !<.IC 25 DO mg/L 4.6 <::4.0 pH 7.3 7.0 5.5-9.0 SS mg/L 10.7 12.7 50 Total Phosphorus mg/l 0.1 0.4 Total Nitrogen mg/l 2.1 2.2 BODs mg/L 10.3 13.3 15

!COD mg/l 18.7 29.3 30 Coliform MPN/100ml 10.3x10':> 4.8x10" 7500 H m - - 0.45 0.23 Velocity U m/s - - 0.24 0.22 Flowrate Q m"/s - - 7.2 3.1 Salinity S ppt 10.4

Note: References: o Temperature, DO, and S: EIA report of WWTP CEPT (2007); o pH, SS, Total Phosphorus, Total Nitrogen, BODs, COD, coliform: FS report for Component 2 and 3

(CDM, 09/2009); o H, U and Q: measured at WWTP 2A discharge point

Table 4-6 Standards for surface water quality QCVN 08:2008 (column B1) Parameter Unit Value pH 5.5-9 SS MglI 50 COD Mg/I 30 BODs Mg/l 15 Coliform MPN/100ml 7500

iDO Mg/I <::4 The scenarios for modeling are proposed as follOWing:

- Scenario 1: both WWTP 1 C and WWTP 2A do not operate and untreated wastewater discharged directly into Ha Thanh river;

- Scenario 2: only WWTP 1 C operates; Scenario 3: only WWTP 2A operates; Scenario 4: both plants operate;

21

I


Table 4-7 Summarisation of Ha Thanh river modeling in the dry season Case 1 Case 2 Case 3 Case 4

Distance (from the discharge point of WWTP 2A) meets the QCVN 08:2008 (column B1) in the dry season (km) until reaching the Thi Nai lagoon: BODs = 15 mg/l, DO ~ 4 mg/l, Total coliform = 7500

MPN/100ml + Low tide:

BODs 2.8-7.8 2.8-7.8 0-7.8 All DO 0-0.7 0-1.2 0-1.4 0-1.2 Total coliform None 9.2-10.3 0-7.8 All

+ High tide:

I BODs 0.4-7.8 0.4-7.8 All All DO 0-0.7 0-0.7 0-0.9 0-0.9

Total coliform 4.6-7.8 4.5-7.8 0-7.8 All Distance (from the discharge point of WWTP 2A) meets the baseline data of Ha Thanh river in the

dry season (km) until reaching the Thi Nai lagoon: BODs = 10.3 mg/l, DO = 4.6 mg/l, Total colifom = 4800 MPN/100ml

• + Low tide: BODs None None 4.5-7.8 4.5-7.8

& 9.0-10.3 DO None None None None Total COliform None None 0-7.8 All

+ High tide: BODs None 6.5-7.8 4.5-7.8 4.5-7.8 DO None None None None

Total coliform None 9.3-10.3 0-7.8 All Value of BODs (mg/L), DO (mg/L), & total coliform (MPN/100 mL) at Ha Thanh river - Thi Nai lagoon

intersection at low tide: BODs 43.5 13.6 41.8 11.8

i DO 2.6 2.6 2.8 2.9 Total coliform 11x10" 6.7x10" 1.05x10" 2x10"' .

Conclusion: It is noted that the quality of Ha Thanh river is not very good and it nearly reaches the limitation of Class B1 (QCVN 08:2008). When both of the plants do not operate. with the natural decomposition and dilution of Ha Thanh river. the BODs could meet the standard at the distance of 2.8-7.8 km (lOW tide) and 0.4-7.8 km (high tide). but coliform number is not satisfied at any point. so, the disinfection of wastewater before discharging to the environment is necessary.When both of the plants operate. the water quality is improved significantly, except DO is satisfied at 0-1.2 km (at low tide) and 0-0.9 km (at high tide). In comparison with the baseline data of Ha Thanh river. DO could never be met. However. at this moment the water quality is polluted by untreated wastewater and other kinds of wastewater such as agriculture and industrial factories. It is expected that after construction of WWTPs, the water quality will be improved. Scenario 5 This model has been done before the technical design of Long My landfill is carried out. The updated information from PMU and WB about the location of discharge pOint of treated wastewater from the landfill requires the consultant to add in one more scenario - the scenario that Long My's treated wastewater will discharge to Ha Thanh river at the upstream of water supply station for Quy Nhon city.

22

i


4-3 Locations outlets to Ha Thanh river As confirmed by Binh Oinh OONRE, the standards applied to Ha Thanh river is presented:

Any discharge to Ha Thanh river from Oieu Tri bridge to upstream must apply QCVN 08:2008-column A1 for surface water quality: pH = 6-8.5, DO 2: 6 mgJI, SS = 20 mg/l, COO = 10 mg/l, B005 = 4 mg/l, N-ammonia = 0.1 mgJI. Any discharge to Ha Thanh river from Oieu Tri bridge to downstream must apply QCVN 08:2008 - column B1 for surface water quality: pH = 5.5 - 9, DO 2: 4 mg/l, SS = 50 mgJl, COD = 30 mgll, B005 = 15 mgJl, N-ammonia = 0.5 mg/l.

As we can see from the map, the location of Long My landfill is in the upstream region of the water supply station for Quy Nhon city. It is assumed that Long My's treated leachate discharges directly to Ha Thanh river. As a result, the standard for leachate treatment is QCVN 25:2009 - Column A which requires the basic parameters as following: B005 = 30 mg/l, COD = 50mg/l, total Nitrogen = 15 mg/l and N-ammonia = 5 mg/l. Discussion If the outlet of the WWTP of Long My leachate discharges to any paint upstream of water supply source for Quy Nhon city and satisfies the requirements for discharge standard, the N-ammonia concentration will be 5 mg/l. However, with reference to the hydrogeological conditions of Quy Nhon, in the dry season, the river flowrate is very low, sometimes reaches the bottom. The river will act as an open channel to carry the treated wastewater. In this case, all parameters such as N-ammonia, BODs, COD do not meet the requirements for raw water supply source. Moreover, the risk of heavy metals and coliform contamination is very high. Therefore, it should not locate the discharge outlet upstream to Oieu Tri bridge. It is suggested that the discharge should be incorporate with WWTP2A. 4.3.2.2 Conclusion T. bl 4-8 E· t I . t t f f f·f f C t 2 a e nVlfonmen a Impae assessmen 0 opera lona ae IVlles 0 omponen !

10 . f Assessment

NO. Impacts Sources Negative Positive escrlplon Short- Long- Short- Long-term term term term

1 Acclimation Untreated water Impacts on water bodies due H discharged to water to high concentration of bodies organic matters, nutrition and

micro-organisms i However, these impacts

\

cannot be prevented from I anyWWTP.

23


2 Dredging and Odor emitted from I Generation rate of sludge is 1M I transport of collection and i 0.227 m3/person.day.

I septage transport of septage i Although this impact is short- i

Micro-organism term, but it can affect directly

I

M dispersion when the to life enjoyment of people

· truck is not covered along the haulage route. properly. However, this impact is easily i i

Air pollution due to mitigated. L transportation means: dust, S02, CO2, CO, NOx

i

3 Surface water Treated water M H pollution discharged to water

bodies

4 Groundwater Wastewater Long-term and wide-spread M contamination leakage because it locates near the

water supply. Special attention to pressurized pipes.

I Infiltration from Long-term and dangerous if M • ASPS and drying the lake bottom is not I beds properly lined.

5 Operational Algae blooming Long-term and directly M problems creating conditions harmful for local residents

for flies and mosquitoes development Odors Not high because it is far M

from residential areas

16 Air I Odors Not high because the buffer M

: environment zone dimension satisfies I pollution TCVN 7222:2002 (300m)

Noise L 1 I Solid waste Domestic solid Small quality and will be L

i disposal waste of workers collected by URENCO. · Hazardous waste: Small quality but high risk. It M chemicals, oils, must be managed properly. debris ...

8 Sludge solid waste from Septage contains SS, oil and L H management screenings grease, BOD and nutrition.

Settled sand at I Septage and biological · intake structure i sludge are stabilised in ASPS Raw sludge at I in 2-4 years in the dry ASPS I season.

i Biological sludge Impacts from bacteria and Septage odor of stabilised sludge are

not high. Furthermore, with the high content of nutrition, stabilised sludge is suitable i

for agricultural purposes. 9 Impacts to Noise and odor I Long-term and directly affect M

public works to Thang Long pagoda and i Tran Quang Dieu school.

10 Traffic safety Traffic congestion Although access routes are L of high density, the operation of WWTP does not affect

. much on the traffic !

I i

I I congestion. I I

24


11 Working safety Lack of safety I Medium-size M equipments for workers Environmental M pollution Electricity hazards M Fires M Exposure to micro- Risky for workers H organism threath

12 Public health Chemical spillage Far from residential areas M and safety Domestic solid

waste

I solid waste Workers' activities

Note: L (low), M (medium), H (high) 4.3.3 Componsent 5 Negative impacts of component 5 come from the sources:

Bad maintenance deteriorates the quality of toilets, wastewater leakage, odors which in turn affect the demand of using toilets; Increase the amount of domestic wastewater and septage;

Table 4-9 Generated domestic wastewater

School No. of students No. of teachers

1. Quy NhO'n Kindergarten 500 44 2. Hoa Sen Kindergarten 1158 17 3. HU'O'ng Sen Kindergarten 290 23 4. Hoa HOng 2 Kindergarten 100 6 5. Tran Quoc Tuan Elementary School 710 32

. 6. Nguyen Van Clf Elementary School 854 35 • 7. Kim £)ong Elementary School 555 -• 8. Tran HU'ng £)<;10 secondary school 1100 55 19. Quang Trung secondary school 830 47 • 10. LU'O'ng The Vinh secondary school 812 45 Total Note: EmiSSion rate: + Elementary and Secondary: 52l1student.day

+ Kindergarten: 1411pupil.day + Teacher: 90l/person/day

Domestic wastewater (m3/day)

11.0 3.7 6.1 1.9

39.8 47.6 28.9 62.2 47.4 46.3

294.8

These flows of wastewater will be transported to septic tanks (upgraded or newly built) and connected to the main system of the city. This flowrate is not high and could be treated together with the city domestic wastewater.

25

I

Environmental Impact Assessment 2010 -_ .. _ .... _--_._--_. __ ._ ••...... -

5. MITIGATION MEASURES 5.1 COMPONENT 1 Table 5-1 M NO. Impacts Source Mitigation measures Standard Implementators Monitoring by

CONSTRUCTION PHASE

1 Landscape Excavation activities Apply ECOP: HS2, TR1, A7 Contractors PMU, D()~ ,~~-

Visual obstruction caused by ISMC

- construction e uipments Wrong clearance and leveling

2 Noise and vibration Construction equipment and Apply ECOP: N1, N2, N3, N5, N6, N7, N8 TCVN Contractors PMU, DONRE, machinery 5949:1998 ISMC

'------

Excavation activities TCVN 5948:1998 TCVN 6962:2001

~ Air pollution (N02• Construction equipment and Apply ECOP: A 1, A2, A3, A4, A5 QCVN 05:2008 Contractors PMU, DONRE, S02' .. ) machinery and excavation QCVN 06: 2008 ISMC

'------activities TCVN Transportation speed is Apply ECOP: A7, T1, T3, T5, T6, T7, T8 6438:2001 eliminated

4 Dust Excavation activities Apply ECOP: 02, 03, T7, T8, RB1 -Storage of materials Apply ECOP: 05, W3, W4, W5, W6

-

Transport and handling of Apply ECOP: 01, 04, T4, T5 materials

5 Odors Stirring bottom sludge Apply ECOP: 06, 003, 004, 005

-Temporary storage of dredged Apply ECOP: SE3, SE4, SE5, SE6, SE7, sludge SE8

6 Effects on local Assess routes are disconnected Apply ECOP: W2, PC1, PC2 Contractors PMU, OONRE, business by storage of materials ISMC

Long construction time

L Local flooding Material washing Apply ECOP: W6, W3, F1 Contractors PMU, DONRE, Lack of diversion measures of ISMC flow

------

8 Solid waste Construction waste Apply ECOP: W2. W3. W4, W5. W6. W7 Contractors PMU, OONRE. -Asphalt Apply ECOP: W9 ISMC

---------- --------- -

26

___ Environmental Impact Assessment 12010

Domestic solid waste of workers Apply ECOP: A4, W1, HS10, HS11 9 Traffic safety Traffic congestion due to Apply ECOP: T1, T2, T3, T4, T5, T6, T7, TCVN Contractors PMU, DONRE,

'---activities of construction T8, T9, WB1, WB2 4054:2005 ISMC Construction means do not ensure safety when moving in the streets -Activities of transportation means at the construction site

10 Damage to near-by Excavation activities Apply ECOP: U1, U2 Contractors PMU, DONRE, buildings ISMC

11 Surface water Polluted storm water Apply ECOP: W2, PC1, PC2 QCVN 08:2008 Contractors PMU, DONRE,

- QCVN 10:2008 ISMC I

Domestic wastewater of workers Apply ECOP: WW1, WW2, WW3 QCVN 14:2008 i

12 Dredged sludge Phu Hoa canal, manholes Apply ECOP: SE1, SE2, SE3, SE4, SE5, TCVN Contractors PMU, DONRE, !

SE6, SE7, SE8, W7, W8 7629:2007 ISMC The dredged sludge will be disposed at the same location to Bau Sen lake's sludge at Long My landfill

OPERATION PHASE 1 Landscape Improve the city landscape Apply ECOP: SW1, SW2, SW3, SW4, Urban drainage Urban drainage

SW5 company company DOT

2 Noise and vibration Operation of pumping stations Create greenery space TCVN Urban drainage Urban drainage 5949:1998 company company TCVN DOT 5948:1998 TCVN 6962:2001

3 Odors Operation of pumping stations Apply ECOP: SW1, SW2, SW3, SW4, Urban drainage Urban drainage SW5 company company

t---Reduce odors from waswater Apply ECOP: SW1, SW2, SW3, SW4, DOT spilling SW5 -Dredging of manhole septage Apply ECOP: SE1, SE2, SE3, SE4, SE5,

SE6, SE7, SE8 4 Local flooding Reduce the risk of flooding Apply ECOP: SW1, SW2, SW3, SW4 Urban drainage Urban drainage

company company DOT i

5 Surface water Temporary discharge Regular monitoring; QCVN 08:2008 Urban drainage DONRE

27


Operation of pumping station Chlorination; QCVN 10:2008 company Applying screening at the outlet;

- Installing signs at appropriate locations; Regular monitoring;

-----

6 Dredged sludge Sewer system Apply ECOP: SE3, SE4, SE5, SE6 Urban drainage Urban drainage company company

DOT 7 Public health Improve the public health Apply ECOP: SW1, SW2, SW3, SW4, Urban drainage Urban drainage

SW5 company company DOT

8 Occupational health H2S, CH4 in pumping stations Apply ECOP: HS7, HS8, HS9 3733/2002/Q8- Urban drainage Urban drainage and safety and sewerage system BYT company ~C;lany I

=-=-- --5.2 COMPONENT 2 Table 5-2 Mitiaation measures of component 2

I I IlmPlementators I Mo:;;ring

---NO. Impacts Frequency Mitigation measures Performance

Difficulties assessment -------- --- -----

CONSTRUCTION PHASE ---------

1 Air environment Noise and Short-term, Apply ECOP: Compared to: TCVN Contractors PMU, Strict implementation Weather vibration intermittent N1, N2, N3, 5949: 1998, TCVN DONRE, will reduce dust conditions are

N5, N6, N7, 5948:1998, TCVN ISMC generation crucial factors N8 6962:2001 significantly. for dust

dispersion Lack of covering

Air pollution Short-term, Apply ECOP: Compared to: QCVN Contractors PMU, Strict implementatio n Old construction regular A1, A2, A3, 05:2008, QCVN 06: 2008, DONRE, will reduce air equipment -7

A4,A5 TCVN 6438:2001 ISMC pollution significantly. increase in air pollution loading

Dust from Short-term, Apply ECOP: Contractors PMU, Strict implementation Weather excavation temporary D2, 03, T7, DONRE, will reduce dust conditions are

T8, RB1, 05, ISMC generation crucial factors W3, W4, W5, significantly. for dust W6 dispersion

Lack of covering Dust from Short-term Apply ECOP: Contractors PMU, Strict implementation Weather transportation 01, D4,T4,T5 DONRE, will reduce dust conditions are

ISMC ~eneration crucial factors -------- L-____ _ _______

28


---

significantly. for dust dispersion Lack of covering

2 Water environment Groundwater Long-term Apply ECOP: QCVN 09:2008 Contractors PMU, High performance Contractors do pollution WW1, GW1, DONRE, not pay attention

GW2 ISMC to the mitigation easures

Surface water Temporary, Apply ECOP: QCVN 08:2008 Contractors PMU, Reducing the Contractors do pollution short-term W2, PC1, QCVN 10:2008 DONRE, washing materials not pay attention

PC2, WW1, ISMC will improve to the mitigation WW2, WW3, remarkably the measures RW1, RW2

---surface water quality.

3 Solid waste Municipal solid Short-term Apply ECOP: A4, W1, HS10, HS11 Contractors PMU, High performance Awareness of waste DONRE, workers and

ISMC collectors -----

Construction Temporary, Apply ECOP: W2, W3, W4, W5, W6, W7, Contractors PMU, High performance Awareness of waste short-term W9 DONRE, workers and

ISMC collectors Hazardous Short-term Apply ECOP: 01, GW2 Contractors PMU, High performance Awareness of waste DONRE, workers

ISMC Dredging sludge Short-term Apply ECOP: W10, SE3, SE4 Contractors PMU, High performance Leachates and from shrimp DONRE, littering ponds ISMC

4 Traffic safety Short-term, Apply ECOP: T1, T2, T3, T4, T5, T6, T7, Contractors PMU, High performance if Awareness of regular T8, T9, WB1, WB2 DONRE, having a good plan driver

ISMC 5 Working safety Short-term, Apply ECOP: HS1, HS2, HS3, HS4, HS5, Contractors PMU, High performance Awareness of

regular HS6, HS7, HS8, HS9, HS10, HS11, HS12, DONRE, constractors and HS13, HS14 ISMC workers

6 Public activities Short-term, Apply ECOP: W2, PC1, PC2 Contractors PMU, High performance Awareness of temporary DONRE, workers

ISMC ~

29

Environmental Impact Assessment 120 to

--------

7 Damage to Short-term Apply ECOP: U1, U2, ER1, ER2, ER3 Contractors PMU, High performance nearby DONRE, because of far constructions ISMC distance to

residentail areas 8 Public health Shorterm, Apply ECOP: T1, T2, T3, T4, T5, T6, T7, Contractors PMU,

temporary T8, T9, WB1, WB2 DONRE, ISMC

---------

OPERATION PHASE 1 Acclimation Temporarily Infecting the treated water in order to Operation Unit DONRE Efficient in terms of

prevent the impacts of pathogens preventing contact Installing the signs to warn people about with the pollution the dangers of contacting with the water bodies Noticing Ilycommunication means

2 Dredging and Regularly, The urban drainage company and DOT will Water Drainage Water Workers are transport of periodically, low monitor the dredging in order to ensure the Company Drainage subjective and septage frequency requirements about sanitation and safety Company afraid to wear

Avoiding to use primitive methods for DOTPS safety clothes dredging Reducing the leakage during collection and transporting Setting barriers around and covers above the dredging manhole to prevent odour emission Analysing the composition and characteristics of septage to produce bio-fertiliser

3 Pollution at the Long-term Regular monitoring Water Drainage DONRE High performance in Awareness of outlets Installing warning signs at suitable Company Water reducing the pollution workers and

positions Drainage at the outlets factories Regular dredging the manhole, sewerage Company system Reducing the spilling of wastewater Cleaning streets and preventing solid waste from coming into drainage system Reducing the discharge of industrial wastewater into the drainage system

4 Groundwater Long-term Monitoring and controlling the groundwater Operation Unit DONRE High performance contamination quality in the area

------

30

Environmental Impact Assessment I 2010

---------- ----

Preventing infiltration of anaerobic ponds Preventing leakage at connections or

----transitions in the pressure pipes

5 Operational Long-term O&M training for workers Operation Unit DONRE High performance if Lack of training problems Monitoring of water quality to evaluate the workers are trained for operational

efficiency of the operation thoroughly workers Installing the signs to warn people of the risks of contacting the water bodies Noticing by the communication means

f--c----------Repairing as soon as accident happens

6 Odors Long-term Ensuring the radius of buffer zone is 300m Operation Unit DONRE High performance Lack of financial (TCVN 7222:2002) budget for O&M Planting trees in the buffer zone to create landscape and prevent odor dispersion Regular maintenance of treatment units Solving operational accidents Clearance of surroundings of the ponds ---

7 Noise Long-term Planting trees Operation Unit DONRE High performance

r-c------- Appropriate O&M regime 8 Waste from the Long-term A good plan of collection and treatment Operation Unit DONRE High performance

operation Training for workers Regular collection of sludge

9 Sludge Long-term Checking sludge quality in order to have a Operation Unit DONRE High performance Lack of covering management suitable plan: drying and using for making the haulage

fertilizer or disposing at the landfill, which vehicles based on the sludge quality Reducing the leakage along the haulage distance because dust could bear heavy metals and pathogens which result in food contamination and diseases related to skin and respiratory system Workers must be equipped with appropriate safety clothes and prevent sludge contact to open wounds Dried sludge will be disposed to Long My landfill. in the case of the quality does not meet the standards.

----

10 Healthh and Long-term, Training and providing enough equipments Operation Unit Department working safety

~--'--regularly for checking labour health of Tr«=lll!:iport

31


At least two workers working in a shift in the operation Keeping a good personal hyqien

5.3 COMPONENT 5 Table 5--3 Mitiaat,· f t5

NO. Theme Source Description Mitigation measures Implementators Monitoring

by CONSTRUCTION PHASE

1 Landscape Storage of materials Temporary, small Apply ECOP: HS2, TR1, A7 Contractors PMU, Construction activities scale, insignificant DONRE,

ISMC 2 Air and noise Noise and vibration from Temporary, small Apply ECOP: N 1, Compared to: TCVN Contractors PMU,

pollution excavation, leveling, construction scale N2, N3, N5, N6, N7, 5949: 1998, TCVN DONRE, machines and transportation N8 5948:1998, TCVN ISMC means 6962:2001 Dust from leveling, construction Temporary, low Apply ECOP: A 1, A2, Compared to: QCVN and storage of excavated and manageable A3, A4, A5, 05:2008, QCVN 06: materials 2008, TCVN 6438:2001 Air pollution from transporting Apply ECOP: 02, 03, excavated materials: dust, S02, T7, T8, RB1, 05, C02, CO, NOx W3, W4, W5, W6,

T4,T5 3 Water

environment - Surface Domestic wastewater of workers Low, temporary Apply ECOP: WW1, QCVN 14:2008 Contractors PMU,

water and manageable. WW2,WW3 DONRE, Stormwater passing by the Low, temporary. Apply ECOP: W2, QCVN 8:2008, QCVN ISMC construction sites PC1,PC2 10:2008

4 Solid waste Domestic solid waste of workers Low, insignificant Use same bins with the schools Contractors PMU, Construction waste Low, insignificant Apply ECOP: W2, W3, W4, W5, W6, W7, W9 DONRE,

ISMC 5 Pupil safety Holes Electricity risks Set up barriers Contractors PMU,

Material storage Fall Have a site monitor DONRE, Cover the holes ISMC, Prevent long construction duration Clean the working area everyday Ensure electric safety

OPERATION PHASE

32


-----

- URENCo 1 Odors and Bad maintenance Low to moderate School management board sign the School leakage memorandum with the PMU for regular management Parents

maintenance of the toilets board 2 Domestic Increase in domestic wastewater Moderate Using 2-compactment septic tanks School URENCo

wastewater Collect and connect to the city sewerage management Parents board

~ ---f---- --------

Septage Increase of septage Low Sign the contract with URENCO for collection School URENCo and treatment at WWTP 1 C and 2A as stated in management Parents the previous section. board

5.4 MITIGATION MEASURES FOR ENVIRONMENTAL RISKS Table 5-4 Mitiaation measures for environmental risks in th h d _ .. _._. - - __ ._ .•. __ • _ .• - _. - o· _ .•. __ . __ •• _ .• ti' h ~ - - _ .. _ ... _. _. .- - - _. _. -

'No. ----

Case Action plan responsibility 1 Cultural or archaeological Contractors protect the current status and report to the supervisor or PMU, local museums and Contractors, Monitoring

object found th~Department of Culture and Information. consultants Submit exhibits to the museum I cultural management agency. Contractors Determine whether the excavation had been continued or stopped to investigate further. Director of Department of Culture and Information will be responsible for object management of Department of Culture and exhibits in accordance with Article 21 of Decree No. 9212002 guiding the implementation of Cultural Information Heritage Act.

2 Grave found Protect current status and notify to the local government. Contractors, stakeholders Determine solutions and tasks of the individuals involved, execution time and place to move. Implement the proposed measures.

3 Complaints from the Immediately implement remedial measures if possible Contractors community on Record in the logbook environmental issues of Discuss with investors, local government to address thoroughly the contradictions Contractors, PMU va local construction and government operation activities

4 Construction or fir-st aid and immediately transfer the victim to the nearest hospital if necessary Workers and loca residents operational accidents Place the danger signs Contractors, investors and local

Make record of the accident government 5 Explosive found Protect current status Contractors, local government

Inform to the local government Contact with military units in the locality for supporting

6 Fires Inform authorities (in particular, is that fire police). Contractors, Monitoring Rescue the objects in the danger zone. conSUltants Actively isolate the fire with the existing facilities on site (shepherds, water or fire extinguisher). Support under the guidance of the functional units until they are present at the scene Contractors, ISCM, public

--'~-(especially in situations detect mines, explosion caused by chemical substances etc.). representatives

33


Support functional units, local government to set up security perimeter around hazardous Local government, contractors, areas. ublic re resentatives Check the conditions of fire and explosion safety on site, ensuring the problem does not Monitoring consultants, PMU continue. Sus ension of work if the violate conditions of fire safe .

7 Electric accidents Disconnect power sources in the incident area and surrounding areas Contractors, monitoring Immediate rescue the objects in the danger zone consultants, public Ex lore the causes of accidents, checkin ower sources, wires and contacts ... re resentatives. Make records of accidents Contractors, investors va local

'--- -----overnment.

34

Environmental Impact Assessment ,2010

6. ENVIRONMENTAL MANAGEMENT PLAN 6.1 ENVIRONMENTAL MANAGEMENT PLAN 6.1.1 Construction phase At this moment, the Coastal Cities Environmental Sanitation Project has Component 1 and 5 implemented and the EMS is almost periect for environmental protection goals. In this part, the consultant highlights some of the key ideas of this EMS.

Environmental Management n""'Tl

General control

Related departments and organisations

Public services companies

(water supply and drainage companies~ URENCO) , >,

""""""" ....

Responsibility

.... " .. " ... """."" .. """ .. ,,"",, ..... ,, .. Cooperation

Figure 6-1 EMS in the construction phase

Responsibilities of stakeholders in EMS are presented in Table 6-1. T. bl R a e 6-1 esponsibilities of stakeholders in EMS

No. Organisation Responsibility 1 PMU - The main responsibility ofthe implementation of EMP.

- Control and minimize environmental impacts - Designate qualified members as their environmental staff and

environmental supervisors - Coordinate with other organizations in the implementation of EMP

0 Work closely with the Districts' and Wards' Environmental Officials in the management, operation and monitoring of the project.

0 Maintain close cooperation with the relevant enterprises in charge of water supply, sanitation, solid waste collection, etc. to monitor the O&M during the operation of the project.

- Supervise the implementation of mitigation measures by the contractors. 0 Monitor the project periormance indicators related to

35

I

Environmental Impact Assessment ,2010

environmental issues; 0 Carry out spot-checks to ensure that the contractors are

implementing mitigation measures as specified in the construction contracts;

0 Review regular reports by the CMC to ensure the compliance of mitigation measures;

0 Review reports by the ISMC on overall environmental impacts of the sub-projects;

Based on the above reports, report to WB and DONRE on environmental compliance of the sub-projects as part of their bi-annually progress reporting.

- In order to get the best performance, PMU should have a specialized group responsible for environmental management (E M-PMU)

2 Construction Actively construct a plan for mitigation measures based on the EIA and Contractors working schedule of contractors

Ensure all the construction activities having sufficient documents from the related organization Implement all the mitigation measures to prevent adverse impacts and protect the environment.

- Ensure that all staff and workers understand the procedure and their tasks in the environmental management program Report to the PMU about difficulties and their solutions Report to stakeholders as having environmental accidents and coordinate to resolve these issues

3 Construction Monitoring the process and procedure of basic constructions, technological Management standards and construction rate of contractors

. Consultants - Monitoring the implementation of mitigation measures of contractors. This task must be clearly regulated in the contract between CMC and PMU

4 ISMC Independent from the contractors and CMC, having speCialists in environmental management and under the management of PM lJ. Supporting PMU to establish and operate the EMS

- Supporting PMU to establish periodical report on environmental management in the project implementation to hand over to supporters and DONRE Directly coordinate with stakeholders to resolve the problems Providing recommendations and raising capacities for stakeholders in the operation and monitoring of the environmental management in the construction phase of contractors

5 DONRE - Playing the key role in public environmental management, DONRE is responsible for receiving and investigating the environmental monitoring reports from PMU

- When there are problems, DONRE will participate directly into research and resolve the related problems and reduce the loss.

6 Environmental - Monitoring and fining the illegal activities I i Police Coordinating with stakeholders to investigate and resolve environmental risks

7 Related Coordinating with PMU and contractors to move the submerged construction organisations and connect temporarily at the cross sections in order to avoid a break-down in

public services i Managing the invisible cultural heritage

i ,- PartiCipating in solving environmental problems 6.1.2 Operation phase When the WWTP construction is completed, they will be transferred to the operational units such as Urban Drainage Company, URENCO and/or local government. These organisations will be responsible for management, operation and maintenance of the WWTP. 6.2 ENVIRONMENTAL MONITORING PROGRAM The environmental monitoring program is proposed in the construction phase at four levels:

Monitoring of the project performance indicators: twice a year, PMU is responsible for reporting to WB: • Health indicators; • Water quality at the receiving water bodies; • Flooding; Monitoring of implementation of mitigation measures done by the contractors: After EIA is appraised by WB and DONRE, ISMC will be responsible for preparing and submitting environmental reports to

36

Environmental Impact Assessment 20 I 0

the WB, summarizing key environmental management and mitigation issues, results and actions to be taken (twice a year) Monitoring by public: public will monitor the project along its process in order to ensure that the contractors will not break the environmental and social regulations as well as to reduce the risks for their wealth, human health and the environment. Community will monitor the project throughout the implementation process, to ensure contractors do not violate the principles of environmental safety to reduce health risks and environmental deterioration by providing information in batches, and help to fill in assessment of the Contractors Mitigation Measures as well as taking care of people's expectations, contributing to a good environmental management regime. Implement monitoring community forms the spirit of voluntary reporting and address urgent matters. When the environmental deterioration happens, people and local administration will report to stakeholders. General monitoring of the project: regularly done by the related organizations and these reports will be collected and submitted to DONRE.

6.3 ENVIRONMENTAL QUALITY MONITORING Table 6-2 Environmental quality monitoring program for the project l. PRE-CONSTRUCTION PHASE (BACKGROUND ASSESSMENT) 1 Monitoring of air quality

Parameters and Once before construction: PM10, total particulate, noise (24h-average), N02, S02, !Frequency CO. Positions 1. Tang B<;\t He - Ltl Hong Phong crossroad

2. Phc;lm HOng Thai - TnIm HU'ng £)c;l0 crossroad 3. The beginning of Xom Tieu channel 4. At the front gate of Thanh Long pagoda 5. Construction site of WWTP 1 C 6. Construction site of WWTP 2A 7. North-western of WWTP 1 C

Compared to QCVN OS, 06:2008; TCVN 5949:1998 2 Monitoring of surlace water quality

!Parameters and Once before construction: pH, DO, BODs, COD, TSS, T-N, T-P, Coliform 'Frequency Positions 1. Discharge point of WWTP 1 C

2. 3km upstream of the discharge point of WWTP 1 C 3. At the intersection between Ha Thanh river and Thi Nai lagoon 4. Proposed discharge point of WWTP 2A 5. 1 km upstream of the discharge pOint of WWTP 2A 6. 1 km downstream of the discharge point of WWTP 2A 7. Phu Hoa Lake 8. Bong Hong Lake

Compared to QCVN 08:2008 ~ Monitoring of groundwater quality

Parameters and nce before construction: pH, TDS, Turbidity, Hardness, N-N03, N-N02' Fe, 1Frequency . oliform Positions 1. House of Phan NgQc Bich, KP4, Tran Quang DiI~u ward

2. House of Tran Quang Tien, KP4, Tran Quang Dieu ward 3. WWTP1C 4. WWTP2A

Compared to QCVN 09:2008 4 Monitoring of sludge quality

iParameters !Frequency

and Once before construction: Pb, Zn, Cu, Cd, As, Hg

Positions 1. At the middle of Phu Hoa channel 2. At the outlet of Phu Hoa channel 3. Around the lake

Compared to IfCVN 7629:2007, TCVN 7209:2002 II CONSTRUCTION PHASE 1 Monitoring of air quality

Parameters and Once for 6 months or at the time of accidents: PM10, total particulate, noise (24-Frequency hour average}NOx, S02, CO Positions 1. Tang Bc;lt He - Ltl Hong Phong crossroad

37

Environmental Impact Assessment 20 10

2. Ph<;lm Hong Thai - Tran Hung £)~o crossroad 3. At the front gate of Thanh Long pagoda 4. North-western of 'NWTP 1 C

Compared to QCVN OS, 06:2008; TCVN 5949: 1998 2 Monitoring of surface water quality

Parameters and Once for 6 months or at the time of accidents: pH, DO, BODs, COD, TSS, T-N, T-P, I=requency Coliform, turbidity, oil and grease, N-N03", P-PO/" Positions 1 Discharge point of 'NWTP 1 B

2. At the intersection between Ha Thanh river and Thi Nai lagoon 3. Thi Nai lagoon 4. Discharge point of 'NWTP 2A 5. 1 km upstream of the discharge point of WWTP 2A 6. 4.5km downstream of the discharge point of 'NWTP 2A 7. Phu Hoa canal

Compared to QCVN 08:2008 III OPERATION PHASE 1 Monitoring of air quality

Parameters and Once for 6 months in the operation phase: dust, noise (24-hour average), NH3, H2S, I=requency VOC Positions 1. At the office of 'NWTP 1 C

2. At the office of WWTP 2A 3. Block 3, Nhon Binh ward 4. Thang Long pagoda

Compared to QCVN OS, 06:2008; TCVN 5949: 1998 2 Monitoring of surface water quality

Parameters and Once for 6 months or at the time of accidents: pH, DO, BODs, COD, TSS, T-N, T-P, I=requency Coliform, turbidity, oil and grease, N-N03", P-PO/" IPositions 1. Discharge point of 'NWTP 1 C

2. At the intersection between Ha Thanh river and Thi Nai lagoon 3. Thi Nai lagoon 4. Discharge point of VVVVTP 2A !

5. 1 km upstream of the discharge paint of 'NWTP 2A

I 6. 4.5km downstream of the discharge point of'NWTP 2A

i 7. Phu Hoa channel Compared to laCVN 08:2008

~ Monitoring the river sediments Parameters and 10peration failures or in case of emergency: Pb, As, Cd, Hg, AI, Fe, Ni, Mn and Frequency iColiform. Positions ~i 1Boutlet

• P 2A outlet Compared to jTCVN 7629:2007

6.4 CAPACITY BUILDING The training for environmental monitoring will be executed with different groups, based on the different req uirements:

PMU: PMU staff that is responsible for environmental issues will be trained to check the monitoring and prepare reports for DONRE and WB. Contractors: will be trained to monitor the implementation of mitigation measures and write the monitoring reports.

To bl 6-3 C "t b "/d' fi EMP f a e apacny UI mg program or opera Ion

Content Target Number of

Time Organisation Budget participants

Working safety Workers and All i Before Contractor and Contractor and sanitary technical staff of construction Department of Labour, hygiene I contractors War Invalids and

Social Affairs Environmental I PMU staff 5 . Before PMU and ISMC ISMC management construction

. structure

38

I


SEMP Staff working on 5 -10 Before PMU and ISMC ISMC working safety and construction sanitary hygiene in CMC

6.5 COST ESTIMATION OF EMP IMPLEMENTATION A summary of the proposed budgets for recommended environmental management, mitigation and monitoring measures is presented for each of the following key EMP implementation activities:

Environmental training Independent safeguards monitoring consultant (ISMC): including monitoring cost and consultant fee, the consultant fee is estimated for 2 people for 1 year of construction phase and 2 man-monthsl year for next 2 years in operation phase. Environmental monitoring by the Construction Management Consultant (CMC) EMP administration and management responsibilities of the PMU

Table 6-4 Estimated Budget Costs for EMP Implementation (in VND) Description Proposed Budget Source of Budget

1 Implementation of Mitigation Included in the Loan proceeds Measures contracts

2 Environmental Training 50.000.000 VND Budget will be provided by the CCSEP.

3 Monitoring cost during construction Loan proceeds -ISMC - Laboratory analysis 500.000.000 VND

300.000.000 VND 4 Environmental Monitoring by CMC Included in the contract Loan proceeds

Total 850.000.000 7. PUBLIC CONSULTATION AND DISCLORURE To comply with the regulations of the Government of Vietnam and policy on social and environmental safety for the WB's category-A projects on the level of environmental sensitivity, community consultation was

. d' h carne out In two pI ases. Form of consultation Constitution

1'" Interview with local 16 wards in Quy Nhon city: Hai Cang, Thi Nai peoples , Tran Hung Dao, Dong Da, Le Hong Phong,

Ly Thuong Kiet, Tran Phu, Le Loi, Ngo May, Nguyen Van Cu, Ghenh Rang, Nhon Phu, Quang Trung, Bui Thi Xuan, Tran Quang Dieu, Nhon Binh and schools in the Component 5.

i

2na Multidiscipline approach: 137 local people Consultation to local 16 local governments governments: send the summary to the local governments and ask for their opinions Questionnaire: people

I affected in Component 1 IlndePth interview: people affected in Component 2

CONCLUSION, RECOMMENDATION AND COMMITMENT Conclusion

Issues discussed Current state of the infrastructure, solid waste management, environmental sanitation conditions Screening impacts may occur during construction such as dust, noise, wastewater, solid waste and traffic congestion. Consultation on the mitigation measures Mitigation measures

I

i

Coastal City Environmental Sanitation Project (CCESP)- Quy Nhon City sub-project is a large-scale project in terms of area, investment and environmental impact. This is the nature of projects to upgrade infrastructure for water supply and sanitation.The project will improve sanitation through (1) construction and development of drainage and wastewater collection system and wastewater treatment (including hospital waste water and household); (2 ) developing capacity to collect and transport garbage, constructing sanitary landfills and

39


contributing to improving and developing infrastructure, creating the urban landscape to meet the needs of city development. But it can not avoid the negative impacts during implementation and operation. All impacts and mitig ation measures for each component of the project was analyzed and solutions proposed reduction in the Chapter 3 and Chapter 4 of the report. Here is a summary. Component 1: The main route for stormwater management includes Phan Chu Trinh, and Hoang Van Thu. Drain box culvert diameter varies from 1600 x1200 - 4000x 1500 and round culvert diameter pressure range from 600 -1000 are installed. Similarly, the wastewater collection system inclues Dong Da, Hoa Lu, Xuan Dieu, Ghenh Rang, Xuan Thuy, Tran Quang Dieu. Most of they are small streets with high density traffic, especially at peak times. Construction work must strictly observe measures to reduce and minimize negative impacts such as dust, noise, traffic congestion. Asphalt waste must be separated and diposed at the legal site with the agreement of DONRE, ISMC and Binh Dinh Province People's Committee. Septage and sludge dredged from Phu Hoa lake will be transported to the Long My landfill and disposed at the site of Bau Sen lake's sludge. Excavated materials are clean and re-used for levelling. Effective measures to reduce environmental pollution and construction costs are phased construction and choose temporary storage sites. Component 2: Impacts of construction stage: WWTP 1 C and 2A are located on low ground shrimp and rice fields are needed to heighten the ground level to 2.5 m and 6.5m for flooding control. The first work is removing organiC soil. It is advised to find a disposal site with reference to the pollution and costs. Then the need for a leveling of land for about 543,000 m3 abd 54,OOOm3 for WWTP 1C and 2A, the flow of large trucks carrying soil, calculated around 415 trips daily. The determination of the source material suitable leveling synchronized and coordinated with other projects in need of land disposal, waste materials are significant. In addition to the consistent flow of traffic, it needs to mitigate the negative impacts such as traffic jams, accidents and noise and dust pollution caused by transportation. After a period of leveling, it is storage of construction materials. Locating mines for material provision is also important to reduce the haulage, costs and environmental impacts during transport. Impact in operation phase: \NWTP 1 C is relocated next to WWTP 1 B with a capacity of 7000m3/day (phase 1) and 14000m3/day (phase 2). The discharge point is located at 1200m away from the southeast corner of \NWTP 1 B. \NWTP 2A has the capacity of 2300m3/day (phase 1) and 4650m3/day (Phase 2) located at Tran Quang Dieu Ward. So Ha Thanh river is receiving the treated water from WWTP 2A, 1C and 1 B with the total volume over the period 2015, 2018, 2020 and 2023 is 16,320 m3

; 23,320 m3, 32,650 m3 and 46,650 m3/day,

respectively. The treatment process was selected to meet QCVN08: 2008's requirements for discharging, the incidents are unavoidable. The training of coaching skills for capacity management unit and the O&M staff of the plant is very important to minimize risk during the operation. Forecast modeling capabilities spread wastes meet the standards required QCVN 08:2008 proven to provide information to help Ha Thanh River to avoid the risks necessary when operating project. Points to determine: (i) the distance from the discharge point to the location of rivers standard QCVN 08:2008 (column B1): BOD5 = 15mg II, DO ~ 4 mg II and total coliform = 7500 MPN /100ml; with the quality value of Ha Thanh River for BODs = 10.3 mg II, DO = 4.6 mg I L and total coliform is 4.8x103 (MPN/100ml) and (iii) determine the water quality in estuaries adjacent to the Thi Nai Lagoon, a distance of 2.5km from the discharge location of the WWTP 1 C. Component 5: Impacts during construction and operation are negligible. However, there is a requirement to improve regulations and building self-management strategy for beneficiaries to achieve a sustainable result. Recommendations It is recommended for the authorities of the city should help the project done quickly. It is recommended for the environmental management agencies to monitor the construction phase in order to ensure the specifications and monitoring of environmental parameters after the project go into operation. It is recommended for related departments that they cooperate closely in the preparation and construction to ensure the progress and quality of construction because the project area may be affected by stormwater. On wastewater treatment technologies, in addition to the strict rules of operation procedures of WWTPs, quality control of inflow and household connection sources are crucial to stabilize BOD5 loading and prevent toxic inhibitors for the growth of microorganisms. The amount of sludge at the plant is relatively large, derived mainly from domestic wastewater, we suggest that sludge from the plant needs careful analysis of specifications for production of organic fertilizer. In the case that the quality of sludge does not meet the standard of using for agricultural purposes, it should be disposed to Long My landfill in the discussion with the related governmental organizations. It is recommended to determine the exploitation mines for construction materials with references to lower cost of transportation, lower environmental and social impacts in transportation. Commitments People's Committee of Binh Dinh Province is the project investor commits:

40

•


1. Environmental Impact Assessment Report applies current Vietnamese standards and regulations on the environment as well as environmental safety policies of World Bank 2. Once EIA report is approved, we will conduct the implementation of environmental protection plans in accordance with the contents of the approved EIA report. 3. Our project does not use chemicals and micro-organisms which are banned in Vietnam and international conventions which Vietnam has acceded. If there is something wrong, we commit to be responsible to the laws of the Socialist Republic of Vietnam .

41