E- /90 Environmental Assessment Report for the Combined Cycle Development at Phumy II, Vietnam Volume.*'( Appendices IV to XVI VOL, 3 August 1995 VL FILE COPY ESB INTERNATIONAL ESBI ENGINEERING LTD Stephen Court, 18/21 St. Stephen's Green, Dublin 2, Ireland, Telephone: +353-1-703 8000 Fax: +353-1-661 5359 - Telex:30598 ESBT El Environmental Assessment Report for the Combined Cycle Development at Phumy II, Vietnam Volume 2: Appendices IV to XVI August 1995 ES INTERNATIONAL ESBI ENGINEERING LTD Stephen Court, 18/21 St. Stephen's Green, Dublin 2, Ireland, Telephone: +353-1-703 8000 Fax: +353-1-661 5359 Telex: 30598 ESBT El TABLE OF CONTENTS VOLUME I EXECUTIVE SUMMARY Policy, Legal and Administrative Framework The Developer IBRD Requirements and Guidelines Vietnamese Environmental Policy and Regulations EIA Review and Approval Process Summary of Main Environmental Issue Project Description Baseline Data Environmental Impacts Summary of Alternatives Summary of Mitigation Measures Consultation with Affected Groups Environmental Management and Training Environmental Monitoring 2. POLICY LEGAL & ADMINISTRATIVE FRAMEWORK Introduction The Developer IBRD Requirements and Guidelines Vietnamese Environrnental Policy and Regulations EIA Review and Approval Process EBI 71.REP 3. DESCRIPTION OF PROJECT Geographical and Social Context of the Development Description of Phumy II Structures Required by the Proposed Development Description of Phumy I Description of Proposed Cooling Water System Sources of Air Emissions from the Proposed Plant Sources and Treatment of Aqueous Emission Sources of Waste Material Consumption of Natural Gas, Oil, and Fresh Water Offsite Developments associated with the Project Project Time Schedule 4. BASELINE DATA Study Area Ambient Air Quality Meteorological Data Noise Terrestrial Ecology - Plants Terrestrial Ecology - Animals Physical and Chemical Characteristics of the Thi Vai River Physical and Chemical Characteristics of the Sao Stream Ecology of River Systems Socio-economics of Phumy Area Socio-economics of Groups directly affected by the Project New Developments not associated with Project FRJ77 RFP 5. ENVIRONMENTAL IMPACTS Summary of Positive Impacts Summary of Negatuive Impacts Construction Socio economics - Land Use Impacts Air, Water and Noise - Dredging for Jetty and Cooling Water Outlet - Transmission Line and Gas Pipe Line Operation Phase - Impact of Air Emissions - Noise - Physical Impact of Cooling Water Discharge - Ecological Impact of Cooling Water Discharge - Ecological Impact of Cooling Water Intake - Waste Water Streams - Oil Spill Risks - Dredging Activity Impacts 6. REVIEW OF ALTERNATIVES Introduction Alternative Designs Altemative Cooling Systems Altemative Sites Altemative Generation Source - Hydro Power The Importation of Power Via the 500kV Line EBI 71.REP 7. MITIGATION MEASURES Compensation for People affected by the Project Mitigation Measures for Construction Impacts Air Emission and Noise Control Oil and Chemical Spill Risk Control Treatment of Aqueous Emissions Mitigation Measures for Cooling Water System Control of Waste Materials 8. CONSULTATION WITH AFFECTED GROUPS 9. ENVIRONMENTAL MANAGEMENT AND TRAINING 10. ENVIRONMENTAL MONITORING RECOMMENDATIONS Monitoring during Construction Monitoring during Operation Appendix I List of EIA Report Preparers Appendix II References Appendix III Summary of World Bank and Vietnamese Environmental Controls and Standards PR 171 P 1P VOLUMEII Appendix IV Ambient Air Quality and Noise Appendix V Meteorological Data Appendix VI Terrestrial Ecology Appendix VII Physical and Chemical Parameters of Thivai River Appendix VIII Aqueous Ecology Studies Appendix IX Socioeonomic Data Appendix X Air Dispersion Calculation Appendix XI Thermal Plume Calculation Appendix XII Oil Spill Dispersal Modeling Appendix XIII Prevention and Management of Oil Spills Appendix XIV Handling and Storage of Chemicals Appendix XV Chimney Height Calculations for Phurny I Appendix XVI Site Photographs EBI 71.REP LIST OF TABLES Appendix IV Ambient Air Quality and Noise Table 3.23 Ambient Air Quality Data Table 3.24 Noise Levels in Project Area Appendix V Meteorological Data Table 3.1 Air Temperature Table 3.3 Atmospheric Pressure Table 3.4 Relative Humidity Table 3.5 Evaporation Table 3.6 Rain fall Table 3.9 Wind Velocity Table 3.10 Wind Rose Appendix VI Terrestrial Ecology Table 3.30 List of Plant Species Table 3.31 List of Animal Species Appendix VII Physical and Chemical Parameters of Thivai River Table 3.12 Water Level of Thivai River Table 3.13 Water Quality of Thivai River, 1993 Table 3.15 Water Quality, 1995 Table 3.16 Temperature and Dissolved Oxygen Levels Table 3.17 Salinity Levels Table 3.18 Bacterial Contamination Table 3.22 Contamination Levels in Sediments Appendix VIII Aqueous Ecology of Thivai River Tabte 3.32 Composition of Phytoplankton Table 3.33 Composition of Zooplankton Table 3.36 Composition of Zoobenthos Table 3.37 Quantitative Zoobenthos Data Table 3.38 Fish Species in Thivai River Table 3.39 Shrimp and Cappalid Species Table 3.40 Summary of Fish Eggs / Ichthyoplankton Surveys Table 3.41 Fish Egg Survey, 1991 Table 3.42 Fish Egg Survey, 1992 Table 3.43 Fish Eggs and Larvae, Thivai River, 1995 EB1 71.REP Table 3.44 Growth Stages of Ichthyoplankton 1995 Table 3.45 Number of Ichthyoplanktons in Thivai River. 1995 Table 3.46 Number of Ichltyoplanktons at various depths. 1995 Appendix IX Socioeconomic Data Table 3.47 Shrimp Pond Areas along the Thivai River Table 3.50 Production of Fishery in Thivai River Table 3.51 Distribution of Occupations of Affected Groups Table 3.52 Current Land use in Project Area Table 3.53 Inventory of Infrastructure and Land affected by the Project Table 3.54 Income Distribution by Source of affected Households Table 3.55 Living Facilities of affected Households Table 3.56 Status of Employment of Affected People Table 4.1 Expectation of Profession of Affected Households EBI71.REP APPENDIX IV AIR QUALITY AND NOISE DATA EB219.Misc Table 3.24 Noise level (dBA) at the project area, May 1995 Station Hours 13 14 15 16 17 18! l9 20 21 22 -23 24 1 2 3 14 5 6 17 89 9 10 11 12 l 47 48 48 49 501 55 54 54 56 56 45 48 45 40 42 49 49 48 50 56 155 52 I58 158 2 56 58 48 49 51 53 155 56 53 52 51 149 52 42 45 46 '7 58 60 59 52 3 17 66 62 58 65 68 72 K7 58 55 (5 45 44 43 62 ( 49 53(58 156 62! I Source: EPC, 5.1995 00 Environmental Protection Centre (EPC) 56, Truong Quoc - Dzung, Phunhuan, Hochiininh City. Tel. 84.8.446262 & 424524 * Fax. 84 8.4542o3 TABLE 3.23 NOT YET READY EB219.Misc APPENDIX V METEOROLOGICAL DATA EB219.Misc E.L4. Phutntw Thiermal Power Plant Project. 05. 1995 Table 3. 1 Air temperature at Phu.my site MvONTH19899 APP MAY JUN JUL U G )VCT !nOV D ECr JAN rE 8 -MAPt APR MAY iJUN JLfAJ E C O V ANMr AVERAGE gReg C) 27. 27.3 27.6 26.9 .76.0 12 5.3 24 7 2 6.6 26.4 27.4 28.8 28.0 271 2.1 2 68 2. 88 26.9 247 88 MAX Doeg C) 346 34.0 33.4 33.9 3.8 2.5 3. 34.0 .3'i9 2.1.5 39-. 2 391 34.0 2. 32.6 32. 31. 33.7 13.6 31.8 3 MIll (0~q CI 7.2.4 23.0 22.9 7_22. 2 2 9 117 90 13. 8. 1. .6 121.5 21. 23.11 23.5 3. 2.2 97 213 7.7 71( < 6i- --. -- - -' I 1. IrlTornnltion as ahtniti- froi, ,hr Viol'w-nese 35.0 ',VRG be.)g C) Ge(wrilyh Crnnter awi '(I:(lrvwi--(( nv-r~ i -lo ye.,r 0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~perind 1411 988.11 I11 9811) it HIn MN, MWf-, -Innira Lu 30.0 MX(epq C) 12. Gener.,) nssessmoot: ~~ 250~~~~ *-- --- MIN (Deg ~~~~~~~~~~~~~~ n. Avornw amblenl 1'' mr,rnlre 26.6A Prq Cbint ,?T,(f-ntw-, 6, n,q b. Mayin ,ni arnbiC!nt t-nrTwPrwlr- 39.2 12C9 C U) ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~~~~~-C. Minimum11 RIfll)irrfl1 teniperaiiir 1 7.2 neq C a.20.0:- .- ~ 5.0 1988 ~~~~~MONTH 1989 Environmenal ProteCtOn CentreEPC). 56. ntong Quoc- DZ1IPg,Pliunhulanm. Hochiimiphl Citv Tel. 84.8.446262 & 424524 Fax<. 84.8 454263 EIA. Phuynn Thernmal Pstoer Platnt Project. 05. 1995 Table 3.3 Atmospheric pressure (mb) at Phumy station MONTH 19_8 iE_. _._.._APR MWiAY JUN JUL AU( T OV DE JAN rEB MAR APR MAY JU L AUG SEP OCT NOV DEC AVG MIN MX MAX (mb) .1011.0 10130 10120 10140 1101) 10150 10220 10200 1019. 1015.0 1017.0 10o10 101$ 1012 1014 1014 lG17 lO0S4 10110 m2.0 AVERAGE(mt . loonso 101o0 10xoo 100 10120 'n120 1012 0 10160 101t3o 10110 1011.0 10100 1010 1009 1010 1o01 1012 Ott) 0080 111fi0 MIrl imb) . . 1004 10060 100.10 10°5 0 1 ol 9020 1o110 10000 10070 1005.011002 o 005 0DS 1005 1007 -007 _ .uD6o 002 0120 _~ ~ ~ ~ ~ ~ ~~~~~~~~~~~~~~~~~~~~I1 -.U _00 100 . 1 .._1 .. _ 1030 a NOTES * ----------.------ .- - .-.Infloormation as obtained from the V"~r'e '~'h E | g MAX (inb) Cr ICnlr and observations over a t\ovpiy , r-t'-d (7n'o-9.1 Ifor0; ) W 1020.0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~at Phu MY Meteorological Station | IJ 1020-0 /\ > | - --AVERAGE (mb) 2 General assessmentr D ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a. Average monthly air pressure lOt I 17mr'b rn 1015 0 ~ / \ / , -- -- - - ----- MIN (Nbmbl t , I'aximum monthlvair presslre 1022 "nb W c Minimum monrilhv air pressure 1001m rrm tY 1010 DW ...... .O- t 1005,0 "-~ 1 000 O._ 0. .. ., ,.._...... -J t: rL1 > rs z m cx z z m l-t - > w 0 Ul OW < W < rl <: w 0 D r n' < U 0 Z 0 - LL 2 .I - U 0 , z 1988 MONTH 1989 Environmental Ptotection Centre(EPC). 56. Tnlong Chioc - Dztiig, Phunhiuan. Hochiminil City Tel. 84.8.446262 & 424524 * Fax 84 454263 E,4. Phztni Thlermal Powver Platit Project, 05. 1995 Table 3.4 Atmospheric relative humiditv (%) at Phumy station MONTH 1988 r71989 APR MAY JUN JUL AUG SEP OCT NOV DEC JAN I FEB MAR APR MAY JU | JUL AUG SEP OCT NOV OEC V i AVERAJE (%) 86..0 6.0 I8 88.O 83 0 82 0 71 0 670 71.0 770 85.0 840 86 89 88 88 8 - |2.4 |670 89 MAX (%) . i 990 98.0 ?? 9 97.0 970 0 97.0 96.0 97.0 97.0 99 99 99 98 96 _ 7,6 I 9 99 0 |Mii 1 I) - I 5390 570 -.0 1 0 530 0 230 t1 0 32.0 . 5a.0 560 60 52 |t 63 54L 319 1 0 610 ! I NOTES _ 1l0O0r I Intermation as nblainea Irom thle .!Ier *in -" Ge'o z achv r "'lnt| <00oo o and observations over a on^ vear perino(d 7 19 1 tall Fai - o AVERAGE t) Mv 2renorological Sttion 5 800 I ~~~~~~~~~~~~~~~~~~~~~~~~~~2 General assessment- 800 MAX (°/) a Averane absolute humidity 82% . I ---70..0M! b. Maximum absolute humidity 99% 60.0 t ...- - -MIN (-%) c. Minimum absolute hutnidity 28% w > 50.0 0 .----. 40.0 UJ 30.0... 20.0 DDWOOW n < 0 0 z 1988 MONTH 1989 CJO 00 Environmental Protection Cetttre EPC). 56. Tr-uong, Quoc - Dzung,Phuhtn oljihCt.Tl 48466 254*F'.8 52 EIA. Phumv Thermal Poiver Plait Project, 05.1995 Table 3.5 Monthly evaporation (mm) at Phumy station (10.1988 - 9.1989) Features 1988 1989 Annual 10 11 12 1 2 3 4 5 _6 7 8 9 averag Tong ltifn- b6c hdi 22.1 27.8 34.1 29.2 23.9 22.0 12.1 14.5 28.2 28.9 15.8 23.8 282.4 Table 3.6 Monthly rainfall (mm) at Phumy station Features Months "An tual t____ 1 2 3 4 5 6 7 8 9 I 11 t2 averae Mean 12 9 14 47 230 249 261 258 249 319 87 35 1770 Max 261 455 260 416 264 158 Min 55 152 132 299 243 3 Source: Data collected form DOSTE, Baria - Vungtau Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung, Plihiniian. Hochinminih City. Tel. 84 8.446262 & 424524 * Fax. 84 8.454263 Table 3.9 Wind velocity (m/s) at Phurny station MONTH APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC AVG MIN MAX AVERAGE(mif 2.7_ 191 19_ 1.4 103 1.0 1 3 1.7 i6 3.7 3.4 3.2 2.9 1.9 2.0 2.1 3.6 1.9 1 2.1 1 3.7 MAX (mis) 0.0o 10.0 12.0 8.0 5.0 100 6.0 10.0 8.0 t2.0 12.0 120 8.0 7.0 6.0 6 65 5 9 ._ = 8.6 50 12.0 0irection ESE NNW SSW WSW SSE sSW WSW E ENE E F E ENE SS1E W W SW SSW E E NOTES _ 14.0 1. Information as obtained from Ilhe Viptnamose < Es 12 o t ls-- Geography Center ar d observ,,fion-, nv-ri a t .......................gr. e . .o vear 1!n tz 1 2 . 0 / \ / \ - AVERAG E (m /s) 1 periO O t4X 19ss-lniles)atrnhAR Gri r d 4 9 . /^ ' v O I80 A /\z \s f I - - MAX (mMs) 1 2 General assessment: o _______ a. Average wind velocity 2.1 mn/s -I I--... - - direction 3 in rniny sson U). 6.0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~and F in diry seiron I Ci 4.0 b. Maximum wind velocity 12 mis 2 0 Direction E_ E iandSSW I I t~~( < D ° t, t) 0 W < W n n < *n o~~ z {,^t 6>nn* 0 ° ; 1 1988 MONTH 1989 = r..~. . ,~C'. a fl,_,*> - P/i'm'' P1~,rn..... A A..nricl,rwr Tit. Th, n)i,illTl -1 . -4t(,262( & 44524 Fa Fax. .94 545126 EIA. Phzumy ;termal Powver I'/ lil? Pm/ject, 05.1995 Table 3. 10 Wind rose at Plhuny station DIRECTION WINL VELOz rY 1-5mfs 1 WIND VELOCITY 5.1-10 rn,s WIND VELOCITY 10.-15m!-| N N % N % N 45. 3.2 2 01 NE 123 F 0.5 E 167 12.2 83 6.0 2 0 1 SE 105 7F 13 0' S 187 13.5 6 0A4 SW 127 9- 7 {0.5 XA 6, 1 4.3 5 0.3 NW 30 | 2.2 | 1 00 VWIND ROSE at PHIU MY METEOROLOGICAL STATION (April 1t1R8-April 1989) 2Il! NW 1T.0 NE 1100 . ; V'WIND VELOCITY 5m!s *i E /! I WIND VELOCItT WINOD VELOCIT Y 10 1-15mis I SVV SE NOTES informitirrrm as, itned from the Vietnamese Geooraphv Center snd obh-- "flons over a one year period (51986- 4/1989) al thre !' ,' M y Meteorolootcal Observation Station Frequencyn of ri- 'nd is 30.1% 143 Environmental Prolecion tCetite (FI't') 56. TrtiongQuoc - Dzung. Phunhuan, Hocniminl City. Tel. 84.8.446262 & 424524 F'F. 841.8.454263 V-6 APPENDIX VI TERRESTRIAL ECOLOGY EB219.Misc E11. Pltunty Tlhermnal Powver Plailw Project, 05. 1995 Table 3.30 List and desnrption of vegetation in and surroundinig the Phumv project area NOTES: B Slirubs. G Tall woody trees Th Herbs Gv Medium woody trees. M Medicine plants Gn Small woody trees. W Woody plants N Azolless plants F Fruite plants Ds Greenning planits D Decor Plants Hd Wild sp. Fr Planted trees WI Submerged Sp. Mg Mangrove forest + Averages of covering No SPECIES NAME VIETI NAMESE LIFE COVER VALUE NAME FORM I. Acanthaceae _ o 61 ro (I Hydrophylla incana l-0ini lichl Th,I-ld,Uf + I)s 02 Acanthus illicifpholitis ()r6 ro1Hd,Mg +++ 03 A.Emnbractealtus _) ()1 IB.Hd.Mg ++ ___|_ 2.Aizoaceae Ho co dang 04 Sesucium portulasartuim Sa_i;m bic n Th.HdCTGc +++ MDS 3. Agaveaceac Ho dtla 05 Draceana cambodiana Ph5ii dd (iv.Hd. + W,Ds 4.Anacardiaceae Ho dao In h6t 06 Buchanaria reticulata MC) ca Gn.Tr,Vd + W,M 07 Mangifera cochinchinienis Xoai G;,Tr,L)c ++ WX 08 M. indica Xoti (;,Tr,Dc ++ W,l 09 Anacardium occidcntalc Diclu (i,Tr.Dc +++ W.V 5.Annonaceae Ho na I0 Annona glabra lilnh h6It (kv,Hd.Vs ++ W 11 A. muricata Mil.5ng cau (iv,Tr,DcL ++ I __________________ ____ _-____________________ _ __ - 164 Environmental Protection Centre (EPC . 56. Truong Quoc - Dzung. Phtmnhuan, Hochimninh City. Tel. 84.8.446262 & 424524 * Fax. X4.8.454263 VI-1 EIA. Phzinty Thermal Powier P/'Inuit Project, O5. 1995 Table 3.30 (cont.) 12 A. squamosa Na (iv.Tr.Dc ++ F 6.Aquifoliaceae _ Ho IlCii 13 llex thorelli lii (;v.Hd.,Vc + W 7. Apocynaceae Ho truc dao 14 Ceibera manghas MOp Xmic (in. Hd,Ngc ++ 15 Alstoiiia scholaris Sfta G,Hd,Dc + W,.NI 1 6 Argyroncriumn odoratuiii Ngan d io Th,Hd,V_ + hI 8. Asclepiadaccac Hp thi6n Iy 17 Tylophora asmathica Th.Hd,Vd + Ivt I 8 Finlaysonia obovata Th,Hd,Vd + hi 19 Streptocaulon Kiciniii Bac ciii Th,Hd,Vd + Ni 2() L)ischidia nunmimularna Nl6c lt n nho HdlTh,Vd + M 21 Sarcolobus globulus Il)ay camin Th,Hd,Vd + M 9.Asplcniaccae _ I_ ? I.ing 22 Asplenium confusutl _ I IRig canxi O(n Th,Hd,Vd ++ 23 Aspleniurn loiggissiiimUtiii In lg daii Th,Hd,Vtd ++ I 0. Astcraccae _ lo C_ic 24 Pluchea in(dica 13.Hic 1Hd.Mlg +++ D)s 25 Ageratuin conyzoides U) ctil[ ieo Th,Hd,VLI ++ NI 26 Enhydra flustuans _ g6 nu'0c Th.Hd,Vd + NI 27 SphacranllLus africanitis _Chaln vit Th,Hd,Vd ++ I)S 28 Spilanthes acmnella _ Ntit "lo Tl,Hd,Vd ++ NI 29 Gynura procumbcis Kiwi th6p Th.Hd,Vd + NI 3() Eclipta prostata _ CO* miuc Th,I-d,VdI ++ tvI 31 Launaea sarmentosa IIII i clic nTi.Hd,Vd ++ D)s A 32 Wedelia biflora Rtan 1u.1i Tn.Hd,Vd ++ I)s I11. Araceae lIo mticn 33 Lasia spinosa _ ChOc gai Th,Hd,Vd ++ D)s.NI 34 Colocasia esculenta _ vl.^ n llti3C Tl.Tr,Vd + 1. 35 Cryptocorutne ciliatu _ NI.ii dArn Thi.Hd,Nlg +.+ 12. Araliaceae _ lo ngui da hi 36 Aralia Sp. D_I-) chau chau B, Hd,VD ++ NI 37 Scheflera octophylla Ngti da hi ch1iii (hi,Hd.Vd + NI chiiiii 16¢5 Environmental Protection Centre jEPC). 56. Trrxnig Quoc - Dzung. Pliuiihtian, Hochiiminh City Tel. 84.8.446262 & 424524 * Fax. R 18.454263 VI-2 EIA. Phumy Thernmal Power Planii /roject. 05. 1995 Table 3.30 (cont.) 13. Boraginaceac F[lo vi voi 38 Carmona retusa CO rum] 13,Hd,Vd + Ni 39 Messerchmidtia argcntca Bac hiclI 13,Hd,Gc + NI1 4() HelioLropium indicumL VC,j Voi Th,Hd,VED ++ M 1 4.1Burmaniaceac 41 Burmannia coelesuis Th,Hd,Vd + I)s 15.Caesalpiniaceae Ilo vang 42 Phanera hassacnsis I Nl(6ng h') (;n,Tr,Vd + W 16.Combretaceae Ho hang 43 Terminalia bellirica Bing hoi (iv,Hd,Vd + W 44 T. catappa W13aig hicn C;n,Hd,Vs ++ W 45 Lumnnitzera littorale C6c (;n,Hd, +++ W, Mg 46 L. raceiTosa C(ic vuing GCn,HdMg +++ W 47 2Quisqualis confera I)Dy giun Th,Hd,Vd + M 17. Commelinaceac Ito thAi lai 48 I'loscopa scandenis C0 duti riu Th,Hdi,Vd ++ D)s 4 I9 Lhaco Sp. I. han h,Hd,Vd + U),NI 18. Convolvulaccac Ho him him _ 5( Ipomoea perscaprea ltiu niu6,lig bi"n Th,Hd,(;c +++ I)s 51 1. littorale _B'im duy6n hai Th,Hd,C;c ++ Ds 52 1. obcura 13im aici Th,Hd,Vd + Ds 53 1. gracilis Min nianh Th,Hd,Vd + D)s 19.Crassulaceae -Ho thu6'c bi3ng 54 Kalanchoe laciniata TrWring sanh rach Th,Hd.Vd ++ M 20.Cucurbitaceac lto ilau bi 55 Trichosanthes puhrillos D)aiy hong hi Th.Hd,Vd + NI 21. Cyperaceae Ho c6i 56 Cyperus exaltatus U du cao Th,Hd,Vd ++ Ds 57 C. alopecuroides [.ic cai Th,Hd,Vd + D)s 58 C. stoloniferus LA.c hiitn Th.Hd,Vs ++ Ds 59 C. bulbosus I,lic Vic,& Th,Hd,Vs, ++ Ds 60 C. radians Xa Th.Hd,Vd ++ Us 61 C. Ieuocephalus I 'ec d3Alu hac Th,Hd,Vd ++ Ds 62 C. pumilus Ci IhI) Th.Hd,GJc + Ds __ _ _ _ __ _ _ _ __ _ _ _ _____ 166 Environmental Protection Centre (EPC). S6. Tnhong Quoc - Dzung. Pliunhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84 R.454263 VI-3 EIA. Phumy Thermal Powver Plait Projecf, 05. 1995 Table 3.30 (cont.) 63 C. javanicus Th,Hd,(ic ++ Ds 64 C. dubius _lac dau ngd Th,Hd.Vd ++ Ds 65 Bulbostylis barbata I3Cfni rau Th,Hd,Vd ++ Ds 66r Fimbrystilis cymosa Mlao thtr tu tan Th,Hd,Vd ++ Ds 67 F. lasiphylla _ OMao thL( lang Th,Hd,VH ++ Ds 68 Rhynchospora submarginata Chuy tiYt Th,Hd,VE) ++ Ds 22.Davalliaceae Ho rang thut 69 Nephrolepis falcata - Rang th6n Ian Th,Hd,VE) + Ds 23. Dioscoriaceac Ho cu nau 70 Dioscorea membranaccl_ Cd lu m6ng Th,VLI + Ds.M 7 1 Dioscorea glabra Khoai mO Th,TR,Vd ++ F 24.Elaeocarpaceae Ho Com 72 Elacocarpus (;rril I hili Coinm _C,IHd,Vd + W 73 E. Dlongaiensis C('om CG,Hd,Vd + W 25 .Euphorbiaccac Ho tha_u d_au 74 PhIlanthus arenarius Cay kon nhAt B,Hd,Vd + Ds 75 CGlochidion littorale Tr_ii b_ t __ (in,Hd,Vs ++ W 76 Breynia coriacea aB,H,Vd + bs 77 Ricinus communis nauB,d,Vd ++ Ds.M 78 Macaranca trichocara _ B,Hd,Vd + M | 79 Trigonostemon gOiccnSiS Tar tht, hung B,Hd,Vd ++ Us,M 8( Tr. pinatus Tarn thu l6ng chim B3,Hd,Vd + Ds,M 81 Excoecaria Agallocha (;ia Gv,HdMg +++ W. 82 Hura cripitans lSa {Jau (;,Hd.Vd + W 83 Euphorbia antigolnum Xtafnig rong B,HL,(Hic +++ Ds 84 Eu. atoto D9ai kich bie&ii 1,Hd,Vs + Ds.M 85 _Eu. Sp. B_ ,Tr,Vs + NM 26.Fabaceae Ho Tu _u 86 Canavalia maritinia Oa5u bii:n Gn,Hd,Vs ++ W Er. variegata _Vtng nern Civ,Hd,Vd ++ W.M 88 Sesbania aculeata So duia gai Giv,Hd,Vd + W,l)s 89 S. grandiflora So daa Civ,Tr,Vd ++ W.l)s 90 S. sesban Hien dic'n Gn,Hd,Vd ++ Ds 91 Dalbergia dorta Bnm hip (mn,Hd.Vd + Ds,M 92 Tephrosia vogelii _ o)a3n kiem B,Hd,Vd + Ds 93 Clitoria marina _ iec B.Hd,Vd ++ Ls 167 Environmental Protection Centre (EPC). 56. Truong Quoc - Dzung. Phunhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 VI-4 EIA. P2uniy Thermal Pover Plail l 'roject, 05. 1995 Table 3.30 (cont.) 94 Derris trifolia (.Xc kc&n B3.HdMg +++ 95 Desmodium umbellatumn rriThg gua T1h.HdVd + I)s 96 D. Sp. _ Trhinmg qua B3.Hd,Vd + Ds 27. Flagellariaccac [lo May ntf(lc 97 Flagella indica N1,iv nulfc Th.Hd.Vs ++ Ds 28. Gcntianaceac IJo long dolm _ 98X Nymhoides inrdiciuim CJ) thuF 1 in Th.Hd,Nc ++ WI 29.Gutiferaceae 99 Calophyllum inophvIllim1 N1i u (i,Hd,Vd + W I()( C. Pulcherrinum V.ly (3C (;N,HdVd + W 30. Hydrocharitaccac lip thuy thao 1(1 Enhalus acoroides Cihan di6in Th,Hd,Nc + 31. Lamiaccae lIo bloa m6i 102 Anisornelcs ovata Th,Hd,Vd + Ds,M 32.Lecythidaccac Hio chi6'c 103 Barrihgtoniia raceiiosa C I i i * (Gv,Hd,Vs + W 33. Lentibulariaccac H lo -ihi cain 104 Chlamydohoea siilcisis 13,Hd,Nc +_ WI 105 Epithema brunonis -Ihudnlg tici Th,Hd,Vd + 34. Liliaccae lli hanh tdi_ I 06 (;loriosa superha Ng6IL I1gvo Th,Hd,Vd + D5s, 35.Malvaccae Ik? hong _ _ 10)7 Thespesia Popuiica rra liim ,( 1I.Hdl.Mg ++ , 1()8 Hibiscus tiliaceus - Tra 13.Hd,Nlg ++ 109 Sida Sp. Ki hoa Tho l1.Hd.Vd ++ Us 36.Mclastomaccac ilo tnia 110 Melastoma affine Nfua I63ng + III Melastoma polyaltLuin Ilua k.ing 13,Hd,Vd + I)s 37.Meliaceae [lo Xoan 1 12 Aglaia Sp. I-(Jn.Hd.Vd + _,N1 113 Xylocarpus granatuill Sti oi (,HdAMg ++ W. 38.Mimosaccae llo trinh nti _ 114 Mimosa invisa Iriiih nl7 B3,Hd,VD +++ Ds,v 115 Mimosa pudica X ,iU ho 11,Hd,VH .D +++s,M 116 Pithecelobiumi du Ice Me kceo (G,HdVd ++ W 117 P. macrocarpum Me ;,HilJc ++ W _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .16 8 Environmental Protection Centre (EPC). Tr. Tronig Quoc - Dzung. Phtnhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8 -154263 VI-5 EIA. Phunty Tl2ermal Power Plailt Project, 05.1995 Table 3.30 (cont.) 39. Moraceae |Ho L)au tam 118 Artocarpus intrgrifolius NI it G,Tr,Dc ++ W,F 119 A. Heterophyllus Nlit G,TrDc ++ W,l 120 Ficus superta S6p Gn,HdVd ++ W,NI 121 F. drupacea -Sung nhiin (iv,Hd,Dc ++ W,M 122 F. glaherrium Stuiig trui Gv,HdDc + W,M _40. Musaceae 1u Ch16(i 123 Musa paradisiaca Chu(6i Th,Hd,Dc ++ 1 124 M. nana C(hui Th,HdDIc ++ _ 41.Myrtaceae Ho Sim 125 Melaleuca leucadec nroii Tra in (;v,Hd,Vd ++ W,M 126 Syzygium cumini Tramn inoc C,,Hd,Vd + W 127 Syzygium lincatum Trdim khe G;,Hd,Vd + W 128 Eucalyptus terecticorimlis lBacil Llin Iring C,,Tr,VcI +++ W 42. Palmaceae lbio Cau dr?a 129 Cocos nucifera I h'7a G;,Tr,V(l +++ F 130 Nypa fruticans Ih'ra intr(c (,,Tr,Mg +.+ Xd 131 Phoenix paludosa Cliii la hit^n ({,Hd,Mg +++ W 43. Pandanaceae Flo dsta dai 132 Pandanus coniferus lNNa Shfng 13,Hd,VD + Ds 133 P. reversispiralis I)NNa V6rig B,Hd,Vd ++ Ds 44.Passifloraceac tHo lac tiCn 134 Passiflora foetida Iac tisn Th.Hd,Vd ++ I)s,M 45. Poaccae Hlo hoa thao 135 Bambusa agrestis Tre gai (i.Hd,Vd ++ W 136 Oxynanthera parvifolia Ie lit nh6 (;,Hd.VD ++ W, 137 Eriochloa procea cc) nath Th,Hd,Vd ++ I)s,M 138 Leercia hexandra CCi h;'(c Th,Hd,Vd ++ D)s 139 Phragmites karka C' saiv Th,HdVd ++ 140 Hemarthria longillora '(X hAip Th,Hdl,Vd ++ D)s 141 Orysa sp L.Oia Ti,Tr,Vd +++ 1 142 Orysa Sp ILua hoang Th,Hd,Vs + 1 143 Zoisia matrella C(ng c6ng Th,Hd,Vs ++ I)s 144 Arudinella rupestris Trtic thao rfng Th,Hd,Vd ++ Ds 145 Neyraudia reynaudialna _ay kh( Th,Hd,Vs ++ -Ds 146 Eragrostis inalayaiia X,uii th'ao Th,Hd,Vd ++ D)s 147 Sporobolus vergicus Xa rt' hi n Th,Hd,Vd + Ds Environmental Protection Centre (EPC). 56. Ttong Quoc - Dzung, PhunIhuan, Hochiminh City. 169 Tel. 84.8.446262 & 424524 * Fax. 843 s454263 VI-6 EIA. PIlmnzy Thermal Power Planit Plroject, 05. 1995 Table 3.30 (cont.) 148 Panictirn repens 5 0 Cu gtrl1g Th,HFd.(;c +++ l)s 46.Polygonaceae lHo IRan rain 149 Atigonum leptopus Antigon Th,Hd,Vd + I) 150 Muchlenbeckia plaLiclat Lan bicah Th,Hd,Vd + Ni _ 47.Polypodiaccae Ho drd(nig xi 151 Pteropsis siloscloides RK;ng dutc xi Th,Hd,Vd ++ Ds 152 Pyrosia acrostichoidcs IZKing hoa iiaic dai Th,Hd.Vd ++ Ds 153 Phymatodes scolopendria RZ t ing titr huhlng Th,Hd,VfI ++ l)s 154 Phymathodes sinuosa lRt.ing tltu cong Th,Hd,Vd ++ Ds 48.Pteridaceae Flo rdn choai 155 Acrostichum aurculm Ialing Th.Hd,Mg +++ Ds 156 Stenochleana pialustris Rd(n choai Th,Hd,Vd ++ Ds 49. Rhizophoraceae tlo dutrIc 157 Rhizophora apictlata Vl-h(rc d(i (,,Hd,Mg +++ W 158 Ceriops tagal Tri , net (;,Hd,Mg ++ W. 159 Ceriops decandra l)i (;,Hd,Mg ++ W 16() Kandelia candel Tranig (I,Hd,Mg ++ W, 161 Bruiguiera sexangula Vet dell (I,Hd,Mg +++ W 162 B. gymnorhiza Vct rx loi (),Hd,Mg ++ W 163 B. Cylindrica Vet tru (;,Hd.Mg ++ WV 50.Rosaceae [l hola h(4ng 164 Rubus mollucanus B,HLl.Vd + Ds 51. Rubiaceae .1(l cA ph c 165 Moringda citrifolia NhhiLi (C,Hd,Vd + NI 166 Hediotis ovatifolia An dicn 1a xoan Th,Hd,Vd ++ D)s 167 H. dichotoma An di4n lhrong phan Th.Hd,Vd + D)s 168 Scyphiphora (Xii Gn,HdMg + hydrophyllacea 169 Guettarda speciosa 1Atrn h6ng Cin,Hd,Vs + 17() Ixora grandifolia Tranigla; to 13,Hd,Vd ++ D)s,l) 171 Lasianthus andamanicus Xti hlutf¶dg l1,Hd,VD + D)s 52.Rutaceae Ho Caim 172 Citrus auranntifolia Chanh 13,Tr,lDc ++ 1- 173 Citrus Sp. _1,Hd,Dc + NI 174 Citrus grandis Batli C;n,Tr,Dc ++ I 170 Environnental Protection Centre (EPC). 56. Tniong Quoc - Dzung, Phunliuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. R V 8.454263 VI-7 EIA. Pl2uniy Thzermal Paver PMon Projecl, 05. 1995 Table 3.30 (cont.) =____ 53.Sapindaceae Ilo ho( hn__ 175 Erioglossum ruhiginosunm - Keo d0.nh,-in di (Gn.Hd,Vdl + XV 1 76 Erioglossum Sp. Gn,HdVd + w 1 77 Eulophia Sp. Nh.in (;iv,TrDc ++ _ ' I 54. Sapotaceae _Io h6ng xiumn 178 Manilkara hexandia (dIng Ile'( (;n.Hd,Vd + W 179 Ardisia Sp. Sang 13,Hd,Vd + Ds I 8() Aegyceras majus CUmll ngilu6i (in,Hld,VJ + W 1 8 I Ae. corniculatus s d (in,HdMg +++ W 55.Schizaeaceae [lo h6ng bong 182 Lygodium microphyluim 136ng bong la'nh6 Th,H-d,Vs ++ Ds 56. Schrophiullariacc:tae lo hoa mnom cho _ 183 Lindernia saginifornm is IAR dJing Th,Hd,Vd + Ds,M 57. Solanaccae llo cit 184 Solanumn hifloruim Cat 2 hoa B,Hd,Vd + M 1 85 Lychopersicon To) niiich chiin T,Hcd,Vd + M esculentum 58.Sonneratiaceae [lo ban I96 Sonneratia caseolaris _II.in chua (G,Hd,Mg +++ XV 1 87 Sonneratia ovata IAn oIi (;,Hd,Mg +++ W 59.Sterculiaceac llo troIin 188 Herietcra tittoralis 'Luli (;,Hd,Mg + W I 89 Sterculia rubiginiosa T'l m1 hit n (;v,Hdf1g + XV 19() Kneinihovia hospita Tr. t dt5 (;n,Hd,Vd + XV 60.Tiliaceae [lo i-Day I91 YITriumfetia radicaiis _ ai d( ia u nsin (;nj-ld,Vd + \V 61.Typhaccae -1H(o co ne"n 192 Typha angiustifolia Cc) ncn Th,H1l,Vd ++ 62. Verbenaceac [lo co roi nguta 193 Callicarpa alpida TV chilu trang 13,Hd,Vd + Ds 194 Prema corymbosa Cziclh bien (Gn,HdMg ++ 195 Clerodenadron inernie Nooc nthbien 13.Hd,Mg +++ DI)s,N 196 Aviicenia officinalis NEIMum delln (;.Hd,Mg +++ XV 197 A. alba Miu truing (;,Iid.Mg +++ W 63.Vitaccac Ilo nilo 19 Vitis trifolia Tl' hic&i Th,Hd,C;c + M 171 Environmental Protection Centre (EPCI. 56. Tniooig Quoc - Dzung Pliunhuan, Hochiminh City Tel. 84.8.446262 & 424524 * Fax. I t.8.454263 VI-8 EIA. Phumy Thsermal Power Planlt Project. 05.1995 Table 3.30 (cont.) 64.Xyridaceae [I( hoang dau l 199 Xyris indica Homig diu Th,Hd,Vd +++ . 65. Zingiberaceae Ho gang 200 Cenolophon oxymiLhruii lRing hoangi Th,Hd,Vd ++ F.M 66. Myrsinaceae [lo dain nem 201 Aegiceras corniCLctlllaun1 S . (;2H.!,g U +p W Source: EP(''Suh-lhstitute for Ecology and Biological Resource, 1994 172 Environmental Protection Centre (EPC. 56. Tniotig *woc - Dzung. Phunlhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. RI.R.454263 VI-9 EIA. Phunzy Thernial Pover P/ant Project, 05.1995 Table 3.31 List of animals distributioni at the Phuiny project surrounding area No SPECIES NAME VIEITNAMESE NAME COVERING LEVEL AMPHIBIANS ILCH NHAI 01 Bufo melanosticus c6c nha ... 02 Rana limnocharis Ngoe 03 Rana cancrivosa rch cua + 04 Rana macrodactyla Nhai cay ++ 05 Rana tigriaa lch d6ng ... 06 Kaloula pulchra Itch tung ... 07 Rhacophorus NhWi hbim ++ leucomystax 08 Ooedozyga irnina C6c Ilnf('c + No SPECIES NAME VIETNAMESE NAME COVERING LEVEL REPTILES 1W) SAT 01 _Python molurus Train m'C + (2 Cerberus rhynchops 1Rin ca ++ (3 Xenochrophis piscalor Rzin nloldc ... 04 Elaphe radiata _ l soc d(ua + 05 Trirnaresturus p,caoru M Ri.ill Itic ++ 06 Naja naja IR.in ho mang ++ 07 Bungarus fascialtis lini cap long ++ 08 Xenopeltis unicolor luin iznng + 09 Hemidactylus freniatus Thach sOng ... 10 Varanus sp. Ky da ++ 11 Mabuya mulLifasciala Ihan 1ln b6ng ++ 12 Malayemys subirijuga lRu3 ++ 13 Cuora sp utl1i + 14 Gerko gerko TaJc ke + 15 Calotes versicolor C(ake dau xanh ++ 16 Ptyas korros ldin rao ++ 16 Calotes calotes Caic ke nau + 173 Environmental Protection Cenitre (EPC). 56.Tntong Quoc - Dzung, Phunliuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 VI-lo EIA. Pzuimy Thiermal Pon er I'nla, Plroject, OS.51995 Table 3.31 (cont) No SPECIES NAMEF, VIE'I'NAMESE NAME COVERINGI LEVEL BIRDS CH CIM 01 Dendrocygna javanica .Le 11aut ++ 02 Ardea cinerea D)icc xim + 03 Ardea purpurea D)icc lua + 04 Ardeola bacchus _ C__ b( ++ . 05 Butorides striatus C6 xanh + 06 1,gretta alba C) flgailg ldln ++ 07 Ixohrychus sinensis _ CC6 lua llfhC + (8 Ibis leuicocephalus ( iag sen + 09 Ciconia episcopus Ilac khoanig co? + 10 Plegadis falcinelIus Q_t(uali, den + II Streskiornis chijiiensis C'u gay 12 Streptopelia tranqucharica Ctu ng6i ++ 13 Cuculus merulinus _ _Tm1 *vit ++ 14 Centropus sine:nsis linm hip ++ 15 Eudinamys scolopacca Tu hti + 16 Haeliatus sp. I )isLu ++ 17 Haeliatus indlus I)icu lua + I 8 Polihierax insignis C".it hliig tlrIllg + 19 D)icacum concolor C_ i Slini sa_u_-_+++ 20 Hirunda rustica _Nh1mnL] hunglg tr'inig ++ 21 Sterna sp. Nlhani hic5i ... 22 Picnonotus joct)stl is Chaio liimo ... 23 Acridotheres I'uscus , iso nliu ++ 24 Motaciila alba Ch'ia viii + 25 Anhiniga malanogcsteir -i(ang dicng + 26 Phalacrocorax carho C oO dis ++ 27 Picoides macei (G kie'ii n5u ++ 28 Gallicrex cinerca (;.i ntf(rc ++ 29 lRallus striatus ( ;i ni(dc ++ 30 Pelecanus sp. _ iI( nong + 3 1 Alcedo alithis pcngaleinsis B3Ing chanh( h6i C* ) ++ 32 Halcyon pileata S='l dahI deln ++ 33 Lonchura punctulauta C'him ri da +++ 34 Ampeliceps coronatus .Slio diahu vzing ++ 35 Pycnonotus atriceps Il ng lau + 36 Aethopyga siparala Chirn hut mat nau ++ Environmiental Protection Ceentre (FPC). 56, Trnonig Quoc - Dzung, Phunhuan, Hochimiinh City. 174 Tel. 84.8.446262 & 424524 * rax. S4.8.454263 VI-ll EIA. Phzunzy Thermal Pawer Planit Project, 05.1995 Table 3.31 (cont.) No SPECIES NAME VIETl NAMESE NAME COVERING LEVEL MAMMALS DONG VAT (C VU (I Lutra lutra cai ua + 02 Viverra zibetha CAy giong + 03 Felis sp. _Mo ring + 04 Bandicota indica Chuot dat ... 05 Rattus argentivenite( Chuot d(tng ... 06 Callosciurus pyheytliuir S(6c hung xamn ++ 07 Sus scora LAin ri(ng ++ 08 Cervus unicolor Nai + 0)9 Maccacus cynoiciguis Khi ++ 1 0) Lepus indicus Tho ritng ++ I Melogale moscata Ch3ln ++ Source: [PC/Sutb- liistittite for Ecology and Biological Resource, 1994 Environmental Protection Centre (EPC). 56, Trmong Quoc - Dzung, Plunihuan. Hochiminh City. 175 Tel. 84.8.446262 & 424524 * Fix 84.8.454263 VI-12 APPENDIX VII PHYSICAL AND CHEMICAL CHARACTERISTICS OF THE THIVAI RIVER EB219.Misc EIA. PhumY' Thermal Powver Plault Project, Os5.1995 Table 3.12 Water level (m) of the Thivai river at Phumy MONTH 1990 1991 _ - APR MAY JUN JUL AUG SEP OCT -iov DEC JAN FEB MAR AV(G AIN MAX Mean (m) -007 -0.07 -0.23 -0o27 -0.23 -o04 0. 0 0.13 014 0.11 0.11 003 -0 0- 027 014 High (m) 1.50 1.39 1.23 1 30 1,22 1 44 1.63 1.53 I fiO 1.70 1.64 150 1.47 122 _ 70 Low (ml) -2.59 -2.89 -3.24 -3.02 -2,90 -2.29 -2.41 2.94 -2 74 -2.75 -2.80 2.25 -2.7,I .3 24 2 5 200:_NOTES ,<: 2I00 1 I:lotili i' 'btained lrnm ''-I - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(iih C-n° t -iltlnd chive(al-llyl>rtrncsv, ,r 1. l.... 1![.,md _ MP inI ( [/l90.13/l991).ritthe FPhu 1yl,. -l C1,50 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~Hh i) slalinm. WL 0 .00 i 2. 2o (m ) , r neraj nssessment: -i' 1 (ow (n) m Mean waler Ie-el p m Ii .1L)0~~~~ ~~ -' ~~(1) Z 13 IL b Hiqlvpst waer eve( m Imo Lowest .atrer level . t -2.00 3-2.50 -3.00 198B MONTH 1989 Environim1ental Protection Centre (EPC. 56. Truong Quoc - Dzung, Pitifhunan, Hochiinini Citv. Tel 84,8.446262 & .424524 Fax S4 8 4542:3 EIA. Phumy Thermal Powver Platit Project, 05.1995 Table 3.13 Water quality of the Thivai river, August 1993 r0 pH1 EC DO SS C1 SO42 NO3 PO43 Turbi- Fe COD fig Pb Location (A) (C) AS/cm mg/Il mg/A mg/[ mg/I - dity mg/l mg/I mg/ mg/I - Thivai river at Hoibai _ (low tide). 29 7.7 40000 4.46 50 8212 1640 0.07 0.02 30 1.50 12.7 0 0.003 - lThiv:ai river at ! Ioihai | Ihigh tide). 29 7.4 j 38000 3.88 2)0 9828 1250 0.05 0.03 1 2 1.52 12.5 I race < 0.005 - Thivai river at Banthach (low tide). 29 7.7 39000 4.3 20 9244 1150 0.09 0.03 1 2 (.68 1 1. < 0.005 - Thivai river at Banthach (high tide). 29 7.7 47000 3.7 10 13444 1209 0.05 0.01 6 0.24 10.5 < 0.005 - Thivai river at hamlet 2, Phuocthai, Longthanh 30 7.2 42000 5.6 10 10755 1210 0.1() 0.06 6 0.19 12. 0 < 0.005 (low tide) - Thivai river at hamlet 2, Phuocthai, Longthanh 29 7.7 40000 4.5 5 11907 1340 0.09 0.03 3 0.17 12.1 Trace <0.005 (high tide). I_ _ II_ __ _ A: These locations are between lOkm upstream and downstream at Phumy site. Environtental Protection Centre (EPC) 56. Tnmong Quoc - Dzung. Phunhuan. Hocliiniinh City. Tel. 84.8.446262 & 424524 * Fax. 84 8s454263 EZA. Phunty Thermal Power Planit Project, 05.1995 Table 3.13 (cont.) r pH EC DO SS Ci so42- N03 po43- Turbi- Fe COD Hg Pb Location (°C) pS/cm mg/I mg/I mg/I mg/I mg/I mg/I dity mg/l mg/A mg/l mg/l - Thivai river at point 70 (low tide). 30 7.6 46000 4.6 8 12676 860 0.11 0.01 5 0.30 13.8 <0.2 < 0.05 - Thivai river at point 70 (high tide). 30 7.8 44000 5.2 5 12292 820 0.09 0.02 3 0.25 13.5 0 < 0.005 - Thivai 1iver at Coidon (low tide). 29 7.7 39000 4.5 8 11523 1210 0.24 0.03 5 0.27 13.0 <(0.005 - Thivai river at Doidon (hightide). 29 7.3 38000 4.9 5 11139 1210 0.20 0.05 3 0.24 13.3 ( <0.0()5 - Thivai river at harbour (lowtide). 30 7.5 37000 5.6 5 10371 1160 0.23 0.03 3 0.30 13.4 <0.2 <0.005 - Thivai river at harbour (high tide). 29 7.3 40000 6.3 3 11523 1180 0.20 0.05 2 0.25 12.7 0 <0.005 Source: EPC, 1993 _, Environmental Protection Centre (EPC). 56. Truong Quoc.- Dzung, Phunhuan. Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 EIA. Phtuntv Thernmal Pover Planit Project, 05.1995 Table 3.15 Water quality at Phumny (January 1995) Sample pH SS Salinity EC Turbidity NO-N N03-N S04 Y.PO4-P 2Fe BODs COD Mn Oils _ mg/lI 'I S/cm NTU mgAI mgA mg/I mgA mg/I rn/I mgrI mgA_nmg/ A3-1 7.2 5 24 2 0.27 2250 0.07 0.22 6 10 0.16 A3-2 7.2 2 24 0 0.39 2200 0.04 0.64 5 I( 0.16 133-1 7. 3 0 24 0 0.35 2200 0.06 0.48 5 I 1 0.24 B3-2 7.3 1 24 . 0'30 2250 (? 0.-' 1 7 '' C3-1 7.2 2 20 0 0.32 2Z30 0.06 1.04 11 19 0.24 C3-2 7.3 2 20 0 0.30 2300) 0.06 0.70 1 5 31 0.24 < G I 6.0 50 260 30 0.03 8.2 20 0.04 0.27 0 G2 4.1 0 72 0 0.005 3.0 0 0.04 0.22 0 Source EPC, February 1995 Note: G1 Mr. Tran Mviinh Hai - Hamlet Quangphu - Phumy small town (12 Mr. V6 Nga - Centre of project See Figure ],.2 at end of this Appendix for location A, B, C. Environmental Protection Centre iEPC). 56, Truong Quoc - Dzung& Phunhuan. Hochiminh City, Tel, 84.8.446262 & 424524 * Fax. 84.8.454263 EIA. Phuniy Thermal Pover Pl,ont Project, 05.1995 Table 3.16 Change in temperature an(d DO according to river depth of the Thivai and Sao river, 12 May 1995 Station Time X Deptii Layer Temperature 02 02 Ž(m)- (m) - (OC) (ppm) (%) A 13"50' 22 0 30.08 4.70 67.00 ____ 10 30.30 4.60 63.00 _ _ 21 30.30 4.40 58.00 __ _18hO' 18 0 30.30 4.20 54.00 __ _ _9 30.50 3.60 49.00 _______ _____ _ 17 30.80 3.80 48.00 1950' 20 0 30.50 3.90 49.00 10 30.50 3.90 49.00 _____ 19 30.60 3.70 50.00 C I 050' 5 0 30.70 4.20 54.00 4 31.30 3.80 53.00 l17_20 2.2 0 30.90 4.80 62.00 I_____ 1.2 .1.30 4.20 59.00 21 __00 3 0 30.90 3.20 43.00 ________ 2 30.70 3.50 45.00 B 1595, 266 0 30.60 4.00 52.00 _______ 13 30.60 4.40 62.00 25 30.70 3.80 51.00 f7__0_0' 23 0 30.80 4.00 57.00 .____ _____ 14 30.90 4.30 54.00 h______ _______ 22 30.80 3.80 50.00 _ 20h 35' 24 0 30.70 3.20 44.00 15 30.70 3.50 45.00 _____________ .23 30.60 3.70 57.00 Source: EPC, 12 May 1995 ____________________________________150 Environmental Protection Centre (Er-). 56, Tniong Quoc - Dzmng, Phunhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fix. 84.8.454263 VII-5 Table 3.17 River water salinity at Phumy site 1991 1992 ___ MONTH MAY JUN JUL AUG SEP OCT tIOV DEC JAN FE3B MAR APR AVG| MIN | AX Average (ppm) 00294 0.026 00224 0.0219 00209 0.0199 0.0230 0.0266 00278 0.0284 00277 0.0294 0253 00199 00294 NO rE3 0.0320 0.0300 1. Information as obtained from tbe Viktnamesne 0. < Geoaraphy Center and observations trver a one ypear neriort , 0.0280 t5li!)1 -4.iA192) al he Phu My 1 hydrological Qibse vation ______ ~~~~~~~~Station. :30.0260 17 2 Gpneral assessment: 0.0240 \ / Average ppn)] Averare water salinity 0 02528 ppm .t 0.0240 \ / '~0.0220 S 0.0200 0.0180 F ,-^ -,----- z ' L fs n > 0 z m 0x 0r < w 0 0 n °r < wl 1991 MONTH 1992 Environimiental Protection Centre (EPC). 56. Truong uoc - Dzting, Phuniluan, Hociliininh City Tel. 84.8.446262 & 424524 * Fax. 84 8 454263 EIA. Phuny Thermal Power I'lantt Project, 05.1995 Table 3.18 Bacterial contamination at the Phumy area, January 1995 No Samples Total coliform Feacal coliform _______ _ MPN/I00 ml MPN/I00 ml 1 A,l, 40 40 2 Ai,-2 110 40 3 Ai.3 230 230 4 Al,4 70 70 5 Al,5 70 <30 6 A3-1 <30 <30 7 A3-2 40 <30 8 A3-3 <30 <30 9 A34 <30 <30 10 A3.5 40 <30 11 BI,, 40 40 12 B,.2 430 430 13 B 13 90 90 14 B,.4 150 70 15 B, 5 . 90 40 16 B3-, <30 <30 17 B3-2 <30 <30 18 B3-3 40 40 19 B3-4 230 230 20 B3-5 <30 <30 21 Cl., 40 <30 22 C,.-2 430 430 23 C,..3 90 40 24 C,.4 40 40 25 Cl.5 70 70 26 C3-, 90 90 27 C3-2 430 430 28 C3-3 30 <30 29 C3.4 40 <30 30 C35 s90 _ <30 Source: EPC, 1995 152 Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung, Phunhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 VII-7 EIA. Phumy Thermal Power I'latIt Project, 05.1995 Table 3.22 Contamination of heavy ,iictals in sediment of the Thivai river at Phumy, May, 1995 Contamination Analytical N° Metal Unit ______ Method Station A Station B Station C I Hg mg/kg () 17 0.07 0.19 AAS 2 Cr mg/kg 3X.22 110.41 86.15 ICP 3 Cu mg/kg 6 09 2.27 14.77 Polarography 4 Pb mg/kg 51 1. 54 7.42 36.5 Polarography 5 Zn mg/kg 6A.46 88.5 104.7 ICP 6 Cd mg/kg ND (*) ND(**) ND(***) ICP 7 Moisture % 1.2 3.7 3.9 Dry at 103C in 4hrs, after drying in __________ ______ _ ________ _________ __________ open air Notes 1: Cd: ND(*) Non detectable (minimum detection: at 3.5 mg/kg) Cd: ND(**) Non detectable (minimum detection: at 2.6 mg/kg) Cd: ND(***) Non detectable (minimum detection: at 2.8 mg/kg) 2 :Content of heavy ineials were calculated based on sample weight dried in open air Souirce: Centre for Analysis of Hochiminh City, 1995 156 Environmental Protection Centre (ErC). 56, Truong Quoc - Dzung. Phunhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fi'. 84.8.454263 VII-8 23 24 26 ----------------- I ------............ . .... . . . . ...... ........ ................ ............................ ........ ............. ,.............................. ........ K -. . / ' ' ROAD TO * 0Sy ' * \HO~~~~~~~~~~ CHI AE /~~~~~~~~~~~~~~~~~~~~~~~~~------ -- ------- . ...... , - -- - -- - ........... -- - - - -- - - - -- -- - .... . ..... 1<.. X3C,,,/, A~ ~~~~AE \, tVn,9 ~MONwITORIN\G .wC^Ei / 9 S TAT1 0 N , r--~nST,TI / a~~~~~~~~~~~~~~~~ u t ~~~~~~~~~~C.W. DISCH. CANAL ',. _ 2 < \ P , w , ' . - s ~~~~~~~~~~~~~~~~AIR MONITODRING GA PR-O tk A t d a ~~~~~~~~STATION ;; ,; m ; * ap,X' // <~~~~~~~~~. . . .. .. . . . . . .. . . . . . . 1- - - -- - - -- - - -- - - -- -- - ' .N...|. fao , 9 4: / B . ' ~~~~FIGURE 4.2i S 9 / 6 Z m<%, | ~~LOCATION OF AIR AND' | :2 WATER , , / ,L ,WATER MONITORING A l B, X /, X , ,STATIONS ------------------ ......... . - - , \ 1 ~ ; ! : "~~~~~~~~~~~~~~~~~~~~~~~~~~ a e a-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ APPENDIX VIII AQUEOUS ECOLOGY STUDIES EB219.Misc EIA. I'lPumy 7'liermal Power IPtr It Proiect. 03. 1995 Table 3.32 Coniposilion of phytoplankilon species in Thivai river 1989 - 1994 r--- .......... AT: - ........9 so.1f : 994 42/1994 NGANH BDACILLAlIUOPIIYTA ___ ___ 01 Melosira granulata + + 02 M. granulata var. ang..stissia 4- + 03 M. nummuoides Dilew + ++ 04 Cyclotella comta + + 0.5 C._bodanica ______ + + 4 06 Coscinodiscus astromph1alus + + + 07 C. jonessianus + + + ____ 08 C.ianisschii + + + ..~~~~~~~~~~~~... . ... . 09 C. subtilis ______ + + + ____ 10 C.Ilineatus + + 11 C. radiatus + + 12 C. gigas nulat_var + + _an_tstssim_ 13 Planktoniella sol Diw + . 14 Skeletonema costatum + + + 15 Lauderia borealis + + 16 Leptocylindrus danicu.s 4phlus+ + 17 Chaetoceros abnos nis + + 18 Ch.affiniss + + + 19 Ch. lorenzianus + + 20 Ch. decipens + + 21 Ch. curvicetus + + 22 Ch. pseudocurvicetus _ + _ + 23 Ch. conipressus + 24 Ch. laciniosus costatun + + 25 Rhizosolenia bargonii + 4 26 Biddulphia regiaa da n c _ + 27 Ditylum sol _ + + 4 8 Fragilaria capucina + 4 _ 29 Fragillaria sp. + + + 176 2i0Cvir h.nentaI Prodectipn scntre (1C. 56. 'Irinn Qwuc - I)znng. I'Imnhuan, Iloduiminli (ity. icI.446262 & 424524 * Fax.o4.X.4 1797 VIII-1 EHA. I'lumy 7Thermal Power Pl'tit l'rqject. 03. 1995 'Iable 3.32 (cont.) -. II , , ..1 . - . . --.V' 30 Gramatophora marina + 31 Clijnacosphenia moniligera + + + 32 Thalassionema nizclhioides + + + 33 Thalassiothrix loimgissitiia + 4 + + 34 Thalassiothrix frauenfelldii + + + 35 Thalasiosira baltica _ 36 Gyrosigina balticwin + + + 37 Pleurosigmna eloiigatunim + + + 38 Pleurosigma angulatu n + + + + 39 P. affine + + + 40 P. rogidium 41 Navicula lyra + + + 42 N. salinarum _-+ + 43 N. nmembranacea + + 44 Synedra ulva + + 45 Amphipleura sp. + + 46 Rhizosolenia bergonii _ _ + 47 Grammatophora marina + 48 Planktoniella sol + + 49 Cymbella naviculiforiliis + - + 50 Stauroneis sp. + + 5 1 Nitzsclia lorenziann + + +__ 52 N. longisima + + + 53 N. closterium + + 54 N. paradoxa + + + 55 N. vitrea_ + _ + 56 Amphora ovalis + _ + 57 Surirella biseriata + + 58 S. robusta + + _ 59 Campylodiscus undulatus + + + 60 C. taeniatus + + 61 Coscinodiscus subsilis + 62 C. janischis _ _ + 63 Peridinium sp. + 64 Amphiprora ehrenbergi + 65 A. alata + + + + vvironmental Protection Centre (Er'). 56. 'ITruong Qtuoc - I)zung. 'hliuhitan, Ilocluiininh City. 177 I. 446262 & 424524 * Fax. 84.X.417976 VIII-2 EIA. I'hitmny Thermval l'ower PIhItr l'i oect. (03. 1995 ITable 3.32 (cont.) 66 Pliurosigmiia angulatuiii +__ _ - 67 Gyrosigina balticuin + + + NGANII CYANOI'lI V"I'A _ 68 Oscillatoria limosa + + _ + 69 0. subbrevis ____ + + 70 0. priceps + + 71 0. geitleriana _ + + NGANH PYRROPIIYlA 72 Ceratiuin hircus _ + + + + 73 Dinophysis miles f. indica + + NGANII CIILOROPJI Y''TA . 74 Tracheloinonas armata: + 75 Staurastum paradoxmli _ + 76 Chodatella longiseta _ _+ + 77 Schroedorria setigera _ _ . + 78 Closterium macilenituiin _ + ___ NGANII EUGLENQI'-IY'T A 79 Euglena acus + + Soiu ce El'C/Sub-Institute of Ecology. 1995 178 EnIironimental Protection C(entre (E1'C '). 56. 'Irnneig Qofc - I)g., ng. I'htilmitsnil. Ilochiminh lity. I el. 446262 & 424524 * Fax. 84.9.4 17'176 VIII-3 EIA. Phumy 7'1termal Power I'la,it Project. 03. 1995 Table 3.33 Conmposition of zooplanktoii : ~~- - -:::NL l:- ::t_ - ......I. COPEPODA _ PARACALANIDAE __ ____ 01 Paracalanus parvus (Claus) + + + + +- + 02 Calonacalanus pavo (Dana) + -+ f TEMORIDAE_____ 03 Temnora turbinat~a (Dana) + + __ CENTROPAGIDAE __ _ _ 04 Cent.ropages calaninus (Deana) + + + _____ PSEUDODIAPTOMIIDAE ____ ____ _05 Pseudodiaptomus beieri T3rebln +__ ± ___ 06 |Pseudodiaptomus incisus Shen at Tsai + + ___ + + 0)7 !_clunikeria dubia (Kiefcr) + + __ + + 08 S. speciosa Danz + + + + 4- + PONTELLIDAE __ 09 |Labidocera kroyeri (Brady) _- 4 __ 10 L. minuta (GiesbrecLOt) + 4 11 L. siniobat.a Shen and Lee +. . 4. . . .. . . .. .. _ _ PACARTIIDAE 12 |Acartiella sin ensis Shen and Lee ___+ +- 13 Acartia clausi Giesbrecit + + + + + + 14 Acartia pacifica Steuer +ii- 4. OITHONIDAE _ 1 5 Oithona rigida Rodenson + + + + +- _+ 16 0. plumifera Baird + + + + + + 17 Liinnoithona sinensis Burckhardt .__ +__ . CORYCAEIDAE 18 Corycaeus speciosus Dania 4 + + TPCSEIDIIDAEPTOAII 19 Euterpina acutifrons (Dana) +_ 4 __ + ECTINOSONIIDAE _ _ 20 Microsetella sp. -r-l+ - - 179 In Ironmental ProtacLion Centre (Ei'C) 56, Irnong Quoc - Izung. Phunhuan, llochiminh (ity. ltel. 446262 &: 424524 * Fux.8A48.447976i VIII-4 1'It. I'lIwmy 7'Thermal l'ower 1'laiti 1r'r ect. 03. 1995 TIable 3.33 (cont.) ........ I I .V .VI.....-I SAPPIIIRINIDAE 21 S. nigromaculata Claus + I1. DECAIPODA ._. LUCIFERIDAE _ 22 Lucifer pennilicifer Ilaiisein + + + + + . _ SERGESTIDAE _ 23 Acetes sp. + + + + + + 111. MYSIDACAE _ MIYSIDAE_ 24 Mesopodopsis slaberi (Viaii 3ciiedcn) + + + + + + IV. CHAETO(,NAI'IIA 25 Sagitta enflata + + + + + + V. PROCIIOItDAlI'A __APPENDICULARIDAE__ 26 Oikopleura longicauda Vogt + + + + + + ___ VI. COELEN'lWEIATA _ I'IIAUNANTIADAE 27 Obelia sp. _ + + + + + + ViI. CAC DANG AU TRUNG 28 Au tring giap xac mntui cliiii (DECAPODA) + + + + + 29 Au tring Nauplius (COPEP'ODA) . I + + + + + 30 Au tnlng Giun nhidu td (POLYCHIAEBTA) + + + + + + 31 Autrftng6c + + + + + + Soturce: EPC/Sub-Institite of Ecology 180 ivironmcntal Protection Centre ( 5'.6. 51i. Irnong Qm)c - Izi:ng. Phltiihtian. llochiminh City. 1. 446262 & 424524 * Fnx. 84.8.447n76 VIII-5 Table 3.36 Zoobentos in Thivai river - Phumy area Date collected 25-1-19995 Collected equipment Petersen Dredged (S-0.025m2) A sample S=0,025*4=0. 100m2 No SPECIES SAMPLING POINT (A) ___________________ 12 3I 'o4 5 718 Q 1213114 15 16 17 18 191 ! - POLYCHEATA = A - ERRANTINA _1 __j Phs llodocidae I I - -- III '77I Etone IMNtvstaj ornata Grube _ _ I + ___l1_ ox | 2 .X~~~~jphroditide utliBar _ . _ J+ __.| _ 0L Aarothoeraispina (Sars! Sigalion pavil_ + lm- LiGeeridae - I | _I - - L 3 iGlveindelpponica + + + +I )Nereidae I 6 Natmalycastis abiuma + 7 Neanthes succinea (Frey et Leuckart) _|_ + I z + 8 Detidronereis aestuarina Southern - - - - .iiiiZ A: The sampling points were transects taken at points A, B, C as shown in figure li'2. The exact location at the sampling points is not marked. Environniatll PTotectionC ntrelEPCi 56.TruongQuoc-DzunigPlhunlhuan.HochintinhiCity. Tel. 348446262 & 474244 4 Fax 34 8454263 Table 3.36 (cont.) No _SPECEES - 2 3 4 5 4 1 12 13 14 1 | 16 17 18 20 9 Ceratonereis bunmensis Monro + + + + + - + + _ 10 Nephthys polybranchia Southern - _ - + _ - - + + + I I Onuphis sp. ±+ B - SEDENTARIA tArlciidae - 12 Scoloplos armiger (O.F. Muller) - + + + { + + + + + + + + + lSpiottdae __ I < 13 !Prionospio japonicus Okuda . - _ - | + - _ . - - - |~~~~~~~~Cirrattlidae_ -.4 14 Chaetozone setosa Maiongren + |Chloraenmidae _ _| _ l l l + + _ 15 Stylaroides plumosus O.F.Muller + + + iChaetopteridae ,_ _4 1 16 iChaetopterus sp. + Nialdanidae ,- || | |__I 1 1 17 Asychis gotoi tzuka + + + + + + + V IS |Maldane sarsi Malmgrcn_e+ _ l + Environmental Protection Centre (EPC). 56. TruongQuoc - Dzung, Phunhuan. Hochiminh City. Tel. 84.8 446262 & 424524 * Fax. 84 8.454263 Table 3.36 (cont.) No SPECIES _ 2 3 4 5 6 7 8 9 10 - 12 13 14 15 16 17 18 1 20 Sabellariidae_ _ 19 Idanthyrsus penatus (Peters) + + ._ Stemaspididae _____ _ 20 Sternaspis scutata (Razani) - _ - l _ - - - iPecttnanidae 1 _ _- 21 Pectinaria .Amrphictene) japotlica | Yisson + + !Amoharetidae_ _ = = | i _ = = = = 22 i.Amphareta acutifrons Grube 1 _ - < I fiTnchobranchiidae : i - I | | I I I ! |23 |Terabellides stroemi Sars (_ Terabellidae - - - - I - - | - - 24 Neoamphitrite sp + Sabellidae | | 25 Bisvira polvusorPha Joubson-… 11- CRUST.;CEA| | | + = = + A - ISOPODA l l l l l l l { | | - Anthuridae - - I |26 |Cyathttra trtncata Dang + + + + -- Corallanidae 27 Exasphaeroula parva Enivironmiiental protection Cenitre i EPC) 56. Tniong Quioc - Dzuiig.( Plhunthiuan. Hochliminh City. Tol 84 8 446262 & 424524 Fax S4 S 4542o3 Table 3.36 (cont.) No SPECIES - 2 3 4 5 6 7 8 9 o 11 12 13 14 15 16 17 18 19 20 B - TANAIDACE -- .~i =Apseudidae__==== - ==== ==== == 28 Apseudes vietuamensis Dan_ + + + + + + 29 Apseudes sp. + C - AMPHIPODA _ _:_ lGammaridae 30 Melita vietnanica + + + I = - + 31 Melita sp. _ + + l Oedicerotidae -…I - | _ _ 32 Nletoedicropsis dadocnsis Dane - - -I- - - - - - _ Corophiidae- 33 Grandidierella liUnonan Barnard + - - - - - + D - MYSIDACEA - Mvsidae 34 Mesopodopsis slabbei (Van + + Beneden) E-DECAPODA Alphaeidae - - - - _ 35 Alphaeus lottini Guerin - + + - - - + - I - III- MOLLUSCA _ ______ _ A A -BIVALVIA____________ _|__|_ _|_._| | Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung, Phunhuan, Hochiminh City, Tel. 84 8.446262 & 424524 * Fax. 34 S.45423 Table 3.36 (cont.) No |f_ SPECIES 12 3 4 5 67 8 9 10 _ 12 13 15 16 17 18 -19 20 36 Aloitndae + + - + + _ + 37 Leda sp. ___ _ + oMeretridae 38 Meretrix lyrata - + - _ - + Sole4iidae + + + + + + - 39 SolenEsp. -I -tsiu -of E c - -o B - GASTROPODA Potarrididae 40 ICerithidae dingtilata (Gmedia)......... < ~~~41 ITerebralia sulcata (Born)- - - --- - ~~C -ECHINODERMATA - - - T7- 0 42jAzphiaplus laevis + +- Source: EPC/Sub-lnstitute of Ecology 00 00 Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung, Phunhuan, Hochiminh City. Tel. 84.8.446262 & 424524* Fax. 84 8.454:63 r I~~a EIA. Phumy 7'Thermal Power I'laitt Pro.ject. 03. 1995 Table 3.37 Quantitive zoobentos in Thiivai lRiver - lhuiny area (From sanipling I to sainpling 20) Sampling point I Date collectcd :25-1-19995 ColTicctd CqUipmTenit : Petersen l)redge (S=(),025m2) A samiple S=0,025 *4=(0. l ()n2 No SliCFCII,S ind/samplc I - Polychacta 1 Ccratonerci.s blurnlsis 5 TOTAL 5 Samling poilnt 2 Date collected 25-1-19995 Collected equipmeniit: Ictelrsen l)redge (S=0.025 m2) A sample : S=0,025 *4=0. 1 00m2 No SPEC IES ind/saniple I - Polychacta. 1 Scoloplos armiger 2 2 Stylaroides plumosus 2 3 Asychis gotoi I 4 Idantliyrsus pennattLs 3 5 Pectinaria (Amphictene).japonica 1 11 - Crustacca 6 Cyathura trumncuita I 7 Melita sp. 2 TOTAL 12 189 Enironmental Protection Centre (E,'(). 56. 1'rumng Qitmoc - I)zung. I'hunhuan, llochiminhi City. 'I'cl. 446262 & 424524 * Fax. 84.5.447976 vIII-Il ErIA. Phumy Thermal Power I'lant 'roject. 03. 1995 Table 3.37 (cont.) Sampling point : 3 Date collected :25-1-19995 Collected equipmeit: Peterscn Dredge (S=0.(25in2) A sample : S=00()25*4=O.l00rm2 No SPECIES ind/sampJe _____ I - Polychacta I Glycinde nipponica 1 2 Stylaroides plumosus 2 3 Asychis gotoi 3 TOTAL 6 Satinliiig point : 4 D)ate collected :25-1-19995 Collected eqtuipment: Petersen l)redge (S=0,025m2) A saiple : S=(),025*4=O.l00On2 No SPECIES ind/sample I - Polychacta I Glycinde nipponica 1 2 Scoloplos armiger 3 3 Chaetozonc setosa 3 I1 -Crustacca 4 Melita sp. 2 III - Mollusca - Bivalvia 5 Aloidis sp. 2 IV - Echinodermata 6 Amphioplus luevis I TOTAL II 190 Environmental Plrotection Centre (El'('). 56, Truong Qiioc - I)zung, I'hunhuan, ilocihiminh City. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-12 EIA. Phumy 7'hermal Power P'lant lPr9ject. 03. 1995 Table 3.37 (cont.) samiipliipg poi,iI * 5 D)aic C:oIlcclc(i :25-1 -19995 Collcclcd cqttpipni I o: lletersecn D)redge ( S=f0).025in2) A sairple : Sd=.( )25 *4=0. I ()m2 No SPECII-iS ind/sample I - Polychacta I Neanthes succinca I 2 Ceratonerics btirmensis 1 3 Malddane sarsi 5 4 Idanthyrsus pennattis 1 II- Crustacca - 5 Cyatliura trumiicata 1 6 Melita vietnaiica 2 7 Alphaeus lottini I TOTAL 12 Sa mpiilinlg point 6 Date collected :25-1-19995 Collected c1iuipneiit: Peterseni Dredge (S=0,025m2) A sample : S=0.025*4=0. 1 ()m2 No SPECIIFS ind/sample i_____ I - Polychacta I Ceratonereis burmncisis I 2 Chaetoptcrus sp. I 3 I'ectinaria juponica 2 4 Amphrecta acutifr-ons I II - Crustacca 5 Cyathura truincata I 6 Apseudes vietnamensis I 7 Apseudes sp 8 1II - Mollenca - Bivalvia 8 Solen sp. 1 9 Aloidis sp. I TOTAL 17 191 Environmentstl 1'rotection Centre (111'). 56. 'ritong Qtioc - l)zung. I'hunhuan. Ilochiminh City. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-13 EHt. PIlurn y 7'Thernmal Plower I'lau t Project. 03. 1995 Table 3.37 (cont.) Sampling point : 7 D)ate collecte( :25-1-19995 Collected ecquiipnicip t P'eter-sci D)redge (S=0.)25m2) A satnple : S=.025 4=0.1 )O()n2 No SPFCIES ind/sample _ I - Polychacta I Neplithys pollhranchlia 3 2 Harmothoe rarispina 4 3 Neoumphitrite sp. 5 4 Scoloplos arimiiger __ __ 8 5_ 1Bispina pollymorpIa 3 11 - Crustacca 6 Mesopodopsis slahberi I TOTAL 24 Sampling point 8 D)atc collected :25-1-19995 Collected cquipietiieil: Pceersen l)recdge (S=0.025ni2) A saimple : S=0,025 4=0.1 )00(n2 N. SPF1CIES ind/saniplc I - Polychacta I Ceratonercis btrniensis 2 2 Sigalion papillostumii _,_._- 3 Onuphis sp. 2 4 Asychis gotoi 11 - Echinodcrinata 5 Amphiopitis lhevis _ TOTAL 7 192 Envirotnmental 1'rolecion (Cenlre (P1('). 56. I r,ivgo Qtnm - I)znng. I'htinhtian. Ilnchiminil City. 1'Il. 446262 & 424524 * Fax. 84.8.447976 VIII-14 EMI. Phuny 7'lternal Power P'lanit Project. 03. 1995 Table 3.37 (cont.) Sa miplinig point 9 D)ate collected :25-1-19995 Collected Cquipment: Petersen l)redge (S=(0025m2) A sample : S=0,025 *4=0. l O(nm2 No SPECIES ind/sample I - Polychacta 1 ;Glycinde nipponica 1 2- Scoloplos ariniger 2 3 Prionospio .japon ictls I 11 - Crustacca 4 Apscudes vietnamnensis 1 1_____ III - Mollusca - Bivalvia 5 Solen sp. 1 TOTAL, 6 193 Environmental l'rotection Centre (El"(7). 56. Truiong Q,uoc - IDzung. Ihunhuan. Ilochiminhi City. Tel. 446262 & 424524 * Fax. 84.i.447976 VIII-15 E,'A. Phumy 7'termal Powe I'lat P'-oject. 03. 1995 Table 3.37 (cont.) Sampling point :1 I)ate collected :25-1-19995 Collected etUipiietit: Petersen I)redge (S=(J)25rn2) A sample : S=0).025 *4=0) ()0(m2 No SPFCIFS ind/sample _____I - Polychactat I (,lyG indc nilppollica 4 2 Aphrodite auistr&alis I 3 GEtone (Mystu) ornata I 4 Nephthys polyhbranchia I 5 - Scoloplos arrniger 6 6 Asychis _____ 2 7___ Sternaspis scutata 2 11- Crustacca 8_ Metoediceropsis daidoctOsis 111 - Mollusca - Bivalvia 9 Aloidis sp. 10 LIda sp. I 11 eretrix Iyrata __________-___ TOTAL 21 - ~~~~~~~~~~~~~~~~~~~~194 Eniironmentnl Protection Centre (EPC). 56. Irivong Qunc - I)zung. Phunhiuan, Ilochiminih City. 'I[cI. 446262 & 424524 * Fox. 84.8.447976 VIII-16 EIA. I'humy 7'hermal Power Plat Project. 03. 1995 'I able 3.37 (cont.) Sampling point 1 1 D)ate collcclcd : 25-1-19995 CollcteCIld CqUimITnCIlt: Petersen l)redge (S=02()_nm2) A samnple S=-).()25*4=0. 1 m2 -No SPECIS inmd/sample I - Polychaela 1 Ceratonercis hurmensis 2 2 Scoloplos armiger 3 3 Stylaroides plunostLs I 11 - Crustacca 4 Melita sp. 2 5 Apseudes sp. I 6 Alphaeus lottiini 2 TTOTAL 11 Samiplinig poinit 12 D)ate colilcted :25-1-19995 Collected cquiipinmeit: Icletrsen I )rcdge (S=0,025 m2) A sainple . : S=).025*4=0. 1 ()n2 No SPEiCIES ind/sample I - Polychacta I Scoloplos arnhiger 2 11 - Crustacca 2 Cyathura trumcata 1 3 Apseudes victilamiensis 2 4 Melita vietnumicu 6 5 Grandidierclla lignorum 3 6 Alphaeus lottini 1 TOTAL 15 195 Environmental Protection Centre 4EI'EC). 56, Truong Quoc - l)zung, Phunliuan. llochiminh City. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-17 EIA. Phumy 7'hermal Power I'lant I'r4ect. 03. 1995 Table 3.37 (cont.) sS.,,plling ploint : 1 3 Date collected :25-1 -19Y995 Collccted equnipment: Petersen D)redge (S=0.025m2) A samp le :S=0).025 *4=0. l ()rn2 No SPECIES ind/sarnple I - Polychacta I Scoloplos armiger 2 2 Asychis gotoi I 3 Stylaroides pluniostus 1 4 lBispira polyniorplia 2 11 - Crustacca 5_ Apseudes victnamucmsis 1 6 Melita victnllmica 2 III - Mollisca - Hivalvia 7 Aloidis sp. 13 8 Solen 2 IV - Echinodcrniata 9 Amphioplus laevis 2 TOTAL 26 Sanpliling point :14 Datc collccted :25-1-19995 Collected equipment: Petersen l)redge (S=0,025rn2) A sample : S=0,025*4=0. 1 mni2 No S PEC IES inid/samnple I1- Polychacta I Scoloplos arniiger 2 2 Asychis gotoi 4 3 Onuphis sp. 4 II - Crustacca 4 Melita sp. 5 Hi - Mollusca - Bivalvia 5 Solen sp. 2 TOTAL 17 196 Elnvironmental lProtection centre (EC('). 56. Irtmng Quoc - I)zung, I'hunhumnl. llochiminhi City. Tel. 446262 & 424524 * Fax. S4.S.447976 VIII-18 EIA. Phumy 7'Thermal Powiver I'la,it P')oject. 03. 1995 Table 3.37 (cont.) Sampliing poilt :15 I)ate wilected : 25-I-I9995 Collectcd cquipimciit: Petcrscin D)redge (S=0.025 m2) A samiple : S=0.025*4=(. I ()m2 No SPECIFS ind/sample I - Polychacta 1 Ceratoncrcis bui-Itlciisis 3 2 Neanthes succinca 4 3 D)endroncrcis acstuarilia _ 4 Nephthys polybranchia I 5 Scoloplos arnmiger 2 11 - Mollusca - Bivalvia 6 Solen sp. 2 TOTAL 13 Sampling poilnt 16 D)ate collected : 25-1-19995 Collected eqipnmient: Petersen Dredge (S=0,025m2) A sample S=0,025*4=0.l00n12 No SP'E4CIES ined/sanip c I - Polychacta 1 Glycinde nipponica 1 2 Onuphis sp. 4 3 Scoloplos armiger 1 4 Asychis gotoi 2 5 Bispira polyrnorplia 1 11 - Echinodcrmata 6 ArnphiopltLs luevis 6 TOTAL 15 197 E nvironmental Protection Ccntre (I.-Ic). 56. 'Irnong QtuOc - I)zuing, I'hunhtan. Ilochiminil (ity. Fel. 446262 & 424524 * Fax. 114.8.447976 VIII-19 M,'M. Pltumy 7'ltermal Poower I'latnt PXrqject. 03. 1995 Table 3.37 (cont.) Samiplinlg poiit :17 D)AtC ColleCCLI : 25-1 -19995 Collectcd ctiqipmnen: Petcrsen D)redge (S=0.025m2) A sample S =(.()2S 4=0. I (Xm2 No SPECIES ind/sample I - Polychaela I Neanthes succinea I 2 SCeratonercis hurmciisis 1 3_ Nephthys polyhruncliia 1 4_ Scoloplos arniiger I 5 Maldane sarsi I 6 1Bispira polymorplia 3 11 - Crustacca 7 Grandidicrella liguorurn 6 8 Alphacus lottini I III - Mollusca - Iiivalvia 9 Solen sp. 2 IV - Ecchinodcrniuta 10 2 AmphiopltLs lacvis I 0 TOTAL X18 Sainpiinig point : 1 8 Date collected :25-1-19995 Collected cquiipmcnt: Petersen Dredge (S=0.025m2) A sample : S=0.025*4=0. 100 rn2 No SPECIES imid/samIple ______ I - Polychacta 1 Glycinde nipponica I 2 Ceratonereis burmensis I 3 Ncphthys polybranchia 5 4 Scoloplos armiger I 11 - Mollusca - Bivalvia 5 Aloidis sp. 3 6 Solen sp. 4 TOTAL 15 Environmental Protection Centrc (EI'C). 56. IlrmntgQuoc * l)zung. l'hin iian. Jlochiminh it. 198 T el. 446262 & 424524 * Fax. 84.8.447976 VIII-20 EIA. Phumy T'hermal Power I'lanit Prqject. 03. 1995 Table 3.37 (cont.) Samipii[rig point 19 Date collected :25-1-19995 Collected ceiipilcini: Petersci D)rcdge (S=0,025m2) A sample : S-=()0(25*4=O. 1 0Om2 No SPECIlS ind/sample I - Polychacta I Maldane sarsi 3 TOTAL 3 Sampling point : 2() latc collected :25-1-19995 Collected equipmenit: Petersen l)redge (S=0,025m2) A sample : S=0.()25*4=0. 1 (Om2 No SPECIES ind/saniple I - Polychacta 1 Namalycastis ahiuima I 11 - Crustacca 2 Cyathura truncata I 3 Mclita vietnamica I 1 4 Grandidierelia lignoruin 3 111- Mollusca - Bivalvia 5 Mcrctrix lyrata 1 TOTAL 7 Source: EPC/Sub-lnstitute of Ecology, 1995 199 Enmironmental l'rotection Centre (El'C). 56. Iruong QtiUoc - I)zung. Ihunhuan. Ilochiminh City. 'Iel. 446262 & 424524 * Fox. 84.8.447976 V111-21 g t 2t *t 23 24 26 _Xt,,,. , W., ,. ,{...................................... . ROA .'~~~~~. ,. L o, ................................ ---. -- - - -- - - - -- - - - ---.. . -- - - - - . _____ ___................._ _.. ___.._..... .i.,,,,,,...........,,..__ _ __. ,_ - fl' \'< JETWATER HAS T MONITORING s STATION -, A-:.2~~~~~~~~r- 31 g af' . ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~, t . ' I < ~~~~~~~~~~C.". OISCH. CANAL PM MY 2 7E > &\& / a a ~~~~~~~SITE .BONDARY :+- .~~~~- - - ., ,, -- - -- - -- - -- - - ------ ------ ------ ------ .......... - ------ .; ....... ,AIR MONITORING < ~~~~~~~~ ~~~~~STATION\ ;;.;-; --;;--------> -.--- ---.-............................. ............. . . . . . . . . ... ;.;.;..;;--;-----1''' '---, ' ,t' , 1. . .. .. .. . .. -I1' tt A"m ''4, 'N"","",M',IE,A f; ----.. ------------- - -------------- ------- .< o ,v ) Jbs , ) . F ~~FIGURE 4.2 i.J) e / 2 X % , ~~LOCATION OF AIR AND > n > 6 ', / , ,' ' ~~WATER MONITORING ' -> / t X @' ~~~~~~STATIONS nG--------------- ------ ---- -*--.... .... .... _~~~~~~~~ , r- I, . . ...... .. . . .. ... . . . . .. t~~~~~~~~~~~~*, I EIA. Phumy 7'itermal Power Platnt Project. 03. 1995 Table 3.38 (cont.) No Species name Vietnamese English Section .iame name I 11 L XIV SILLAGINIDAE 26 Sillago sihama (Forskal) Duc Silver sillage X X X XV LEIOGNATIIDAE 27 Leiognathus brevirostris (C&V) Liet Ponyfish X X X XVI GERREIDAE 28 Gerres macracanthus (Bleeker) Mom Silver biddy X X X XVII TI-IERAPONIDAE 29 Therapon jarbua (Forsskai) Cang Therapon X xvmn LUTJANIDAE 30 Lutjanus sp. Ca hong Snapper X XIX SC1AENIDAE 31 Nibea soldado (Lacepede) Suu Soldier croaker X 32 Otolithoides pama (H&B) Duong Pama croaker X X 33 Protononea sp. Du Croaker X 34 Dendrophysa russelli Cuvier Du Croaker X 35 Johnicops sina (Cuvier)' Du Croaker X XX SCATOPHAGIDAE 36 Scatophagus argus (Linnaeus) Ngau X X X XXI MllGILIDAE 37 ILiza subviridis (Valenciennes) Doi Mullet X X X 38 Liza sp. Doi Mullet X XXII POILYNISMIDAE 39 Eleutharonama tetradactylum Shaw Chet Tassel fish X xxm s YNODONTIDAE 40 l larpodon nehereus (H&B)" Khoai 13ummalow X 41 Saurida elongata T & S Moi Lizard fish X XXIV SPARIDAE 42 Crinidens sarissophorus Cantor). Chia voi X XXV ELEOTRIDAE 43 l3leotris ruscus (Hamilton)** Bong trung Cobv X 44 B3utis butis Hamilton Bong cau Gohy X XXVI GOB IIDA 45 Acentrogobius canius C & V Bong cham CGoby X X X 46 Acentrogobius atfipinnatus Smith Bong Iron G(oby X 47 Acentrogobius sp. Bong la Ire Cohy X 48 Glossogobius sparsipapillus Akihito Bong cat White goby X X X & Meguro 49 Pogonogobius planifrons (Day) Bong rau Goby X XXV1I Al OC(RYPTEIDAE 50 I seudapocryptes Janceolatus(Bloch) Bong keo Gobv X X 51 Boleophiltalmus boddardi (pallas) Bong sao Mud skipper X _ X 201 Environmental 1Protection Centre (EPC). 56, Truonag Quoc - )ztng. Pltinhiuan. Ilocbiininh City. Tel. 446262 & 424524 * Fax. 84.8.447976 VI1-24 EIA. Phumy Thzermal Power Plant Project. 03. 1995 Table 3.38 (cont.) No Species name Vietnamese English Seclion name flanic i 111 XXVIm TAENOIDIDAE 52 Taenoides nigrimarginatus Hora Bong re cau Goby X XXIX TRYPAUCHENIDAE 53 Trypauclien vagina (Bloch) Bong lo X X X Keo do XXX CYNOGLOSSIDAE 54 Cynoglossus punticeps (Richardson)' Luoi trau Tongue X X 55 Cynoglossus macrolepidotus (Bleeker)' Luoi trau sole X X 56 Cynogiossus macrostomus Nornal Luoi trau Tongue X X 57 Cynoglossus sp. L_uoi trau sole X X X T'ongue sole Tongue sole XXXI SOLEIDAE 58 Synaptura spp. Luoi meo Sole XXXII PSE1TODIDAE 59 Psettodes erumel (Bloch&Schneider)" Ca ngo X XXXm SPHYRAENIDAE 60 Sphyraena jello (C&V)" Nhong 13arracuda X XXXIV 13ATRACI-IOrDEA 61 Batrachus grunieus (linaeus)" Mang ech X X X XXXV TETRAODONTIDAE 62 Chelonodon fluviatilis (liamillon) Noc Global Fish X X _ Total I2 1 2.5 52 Note: - Source: EPC/Aquacultural Research Institute Nc2 - LSection 1: Upper river of electricity plain - Section HI: Vicinity of electricity plant - Section III: Lower river of electricity plant * Low commercial value fish ** Mean commercial value fish *** High commercial value fish _ 202 Environrnental Protection Centre (E PC). 56. 1Truong Quoc - I)AIng, PlhunhUan. IOchinminhi City. Tel.446262 & 424524 * Fax.84.8.447976 VIII-25 EIA. Phtuny Thtermal Power Plalt Project. 03. 1995 Table 3.39 List of shrimp and cephalopod observed in Thivai river No Species name Vietnaamese English Section name name I In m I PENAEIDAE I M. gracillima Mobili Tom sat Cat prawn X 2 M. bardwichii Miero Tom sat Cat prawn X 3 M. affinis H. Mile - Ewards Tom sat Pink prawn X 4 Meta penaeus brevicomis Tom sat Cat prawn X H. MilLne - Ewards 5 Metapenaeus ensis (De Haan) Tom dat Endeavour X X X 6 Metapenaeus lysianassa De Man Tom bac song X X X 7 Parapenaeopsis sculptilis Heller Tom sat X X X 8 Penaeus merguiensis H. Milne-Edwards Tom the White shrimp X X X 9 Penaeus monodon Fabricus. Tom su Tiger shrimp II PALAEMONIDAE 10 Macrobrachium rosenbergii De Man Tom cang xanh Giant prawn X 11 M. equidens Dana Tep Irung X 12 M. mamilodactylus Thailwitz Tep trung X 13 Exopalaemon styliferus Fl. Milne Edwards lom gai X 14 Exopalaemon sp. Tom gai X 15 Palaemonetes spI. 'Pep gao X III SERGESTIDAE 16 Acetes sp. Ruoc Acetes X X X IV SQUILLIDAE 17 Squilla mantis 1'om tich X X X V PORTUNIIDAE 18 Sylla serraLa ( ua Mud crab X X X 19 Portunus pelagicus CGihe Swimming X crab VI OCTOPUSIDAE 20 Octopus sp. Muc tuot Octopus X X 13 8 13 Source: EPC/Aquacultural Research Institute N°2 Note: - Section 1: Upper river of electricity plant - Section II: Vicinity of electricity plant - Section III: Lower river of electricity plant * ILow commercial value fish ** Mean commercial value fish High commercial value fish 203 Envirownental Protection Centre (EPC). 56, Truonig Quoc - Dzung, Phunhiuan, lochinminh City. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-26 EIA. Phumy Thermal Power Planit Project. 03. 1995 Table 3.40 Number of collected samples in various survey compaigns Time Number Fish eggs Ichthyoplankton Gobiedac of fishing net Number n Number n Number n Sept. 91 37 595 16,1 4074 110,1 3642 98,4 89,4 Apr. 92 19 47 2,5 2467 127,8 2062 108,4 83,5 Total 56 642 11,5 6541 116,8 5702 104,8 87.2 Notes:n: Average number in I fishing net %: Percentage in total Ichthyoplankton Source: Aquacultural Research Institute 204 Environmental ProtecLion Centre (EPC). 56. lTr uong Quoc - Vzung, Phunhlaii, llochiminll ('ity. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-27 LEA. Phlumy Thermal Power Plant Project. 03. 1995 Table 3.41 Quantity of fish eggs and ichth oplankton at Cangio and Chauthanh Sept. 1991 Fish name Station Day Time Number No e Note month Eggs Ichthyop- A lanktons 1 2 3 4 5 6 7 Ambassis spp 8 24/9/91 940 28 Gobiidae 6 Clupeidae 7 Stolephorus spp. I Juvenile Unidentified 2 Total ___ 44 Ambassis spp 8 24/9/91 11°° 4 Gobiidae 15 Unidentified 1 Total _20 Ambassis spp 8 24/9/91 13°° 1 Clupeidae I Total ._2 Ambassis spp 8 24/9/91 15°° 3 Gobiidae 4 Clupeidae 2 Total _9 4 Ambassis spp I8 24/9/91 35 Gobiidae 26 Clupeidae 26) Stolephorus spp. Unidentified 3 Total 75 _ Gobiidac 8b 24/9/91 23°° 1601 Taenioididae 47 Eleotridae 5 Periophthalmidae 3 Polipneomnidae 22 Ambassis spp 8b 24/9/91 23°° 26 Tetrodontidac Cynoglossidae 2 Unidentified 24 Total _-1731 A: See figure 3.5 for location. _205 Environmental Protection Centre (EP('). 56, Truong Quoc - I)zung. I'hunhuan, llochiniinli Citi. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-28 EIA. Phurny Thzernmal Powver Plant Project. 03. 1995 Table 3.41 (cont.) _ _ _ _ _ _ _ _ _ 2 3 4 5 6 -7 Gobiidae I 1 24/9/91 920 100 Slolephorius sIp Chtta xAc dinhI Total 7-102 Gobiidae I11 25/9/91 1230 1 9 Stolephorus sp. 4 1 Juvcnile Eleot ridae I Juvenile Unidentified 4 Total __ _ _ _ __ _ __ _2 1 Gobi idae I 1 25/9/91 1400 5 Balistes viridescens 1 Total ____6 Gobjidac I I 25/9/91 1 630 1 Stolephorus spp. I Ambassis spp trlfdng Unidentified 1 7 th~inh Total ___1 ~7 2 Ambassis spp I 1 25/9/91 1 840 23 Cluipcidae I 7'oxoiidaeI Total _ _ __ Z2 5 _ _ _ Gobiidae I 1 25/9/91 2030 1 1 6 _____ Gobijidae I 1 25/9/91 2230 1 8 Anmbassis spp I Ilothidae Neolethus lanikesteri 2 TrtrCiiig Total Z22 thainh Gobijidae I I 26/9/91 0030' 97 Siolephorus spp. 2 I Cliupeidac I Unidentifijed 20 Total ____ 22 99 Gobijidae I 1 26/9/91 0230 75 Clutpeidae 2 Cynoglossidae Uniidentified 1 7 Total __ _ _ _ _1_ _ _ _~ 7 78 206 Environnmental Protection Ceintre (EPC). 56. Truiong Quoc - Dziing. Phunhusn. flochim~inh City. rTN. 446262 & 424524 * Fax. 84.8.447976 VIII-29 EMA. Pliumny 7'Tlernmal Power Planit Project. 03. 1995 T'able 3.41 (cont.) 1 _ 2 3 4 5 6 7 Gobiidae 1 1 26/9/91 0630 13 Stolephorus Unidentified Total _ 2 13 Gobiidae 11 26/9/9l 08" 3 Ambassis spp I 1 26/9/91 1030 2 Gobiidae I 1 26/9/91 1230 Ambassis spp. 44 Stolephorus spp. 12 Blannidae 3 Unidentified __I__ Gobiidae 1I 1 25-26/9 348 Siolephorus spp. 19 4 Eleoiridae Ambassis spp 70 Balistes viridescens I 7'oxotidae Bot hidae Neostethus lankesteri 2 Cynoglossidae I Blennidae 3 Clupeidac 4 Unidentifled 61 i Total .80 437 Anzbassis spp 12 27/9/91 0810 59 Gob jidue 5 1 Mugil spp. 5 Clupeidae 8 Stolephorus spp. 341 2 Callionymidae I Blennidae 24 Unidentified 165 4 Total 50_ O6 154 207 Environmental Protection Cenlre (EI'C). 56. Truong Quoc - Dzung. Plhunilitian. Ilochiminih City. Tel. 446262 & 424524 * I-ax. 84.8.447976 VIII-30 EIA. Phumy Thermal Power Plant Project. 03. 1995 Table 3.41 (cont.) 1 { 2 3 5 4 _6 7 Ambassis spp 14 27/9/91 0940 4 Gobiidae I X Clupeidae I Carangidae I Unidentified 7 1 Anbassisspp 15 27/9/91 1215 3 Unidentified Total __ 4 Goobiidae 1 6 2//91 g40 59 Unidentified Total l 59 Gobiidae 17 28/9/91 945 596 Ambassis spp. 2 Clupeidae I Blennidae I Coilia sp. Unidentified i Total 7602 Gobiidae I 8 28/9/91 1()25 1 82 Antbassis spp. 2 Clupeidae I I Eleoridae I Unidentified Total .197 Ambassis spp. 19 28/9/91 1215 2 Goobiidae 21 Total _____ 22 Goobiidae 20 28/9/91 1330 10* i ( Gobiidae 22 29/9/91 730 3 Ambassis spp. 6 Total _9 Gobiidae 23 2919/91 . 36 Clupeidac Ainbassis spp. 2 Unidentified I Total _ j9 208 Environmentai Plrotection Centre (EPC). 56. Trmong Quoc - Dzung, Phunhtian. llochiiminh City. 'Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-31 EIA. Phurny Tlhermal Power Plant Project. 03. 1995 Ta3T'. (cont.) 1 _2 3 4 5 6 7 Gobirdae 24 29/9/91 1120 271 Stolephorus spp. 1 Clupeidae 6 Ambassis spp. 2 Total 250 Gobiidae 25 29/9/91 14'5 410 Callionymidae 2 Total __ 4 12 Syngnathus sp. 26 29f9/91 18°° I Goobiidae 10 ambassis sp. 7 Total _ Sl8 Ngu6n: Vi6n Hai Ditdng Nha Trang (1991) Source: Nhatrang Oceanographic Institute 209 Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung, Plwunlutan. Ilouhiminlt City. l'el. 446262 & 424524 * Fax. 84.8.447976 VIII-32 t - - Wnj Kho 120 ~ ~ ~ V .7 0 ~ ~ ~ ~ ~ ~ 5 /VIII-33sr)in~' o 13 1f 1: 175,000 Fl~g.3.5 Monitoring stations for F'islh eggs anid ichtliYoplaniktons ,Sept 1991I 250 VIIb-33 EIA. Phunmy Thermal Power Plant Project. 03. 1995 Table 3.42 Quantity of fish eggs and ichthyoplankton at Cangio and Chauthanh April- May/1992 Fish name Station Day Time Number Note Note month Eggs Ichthyop- A lanktons 1 2 3 4 5 6 7 Gobiidae 9 215/92 450 10 Ambassis spp 3 Stolephorus spp. 2 Total _ 15 Gobiidae 9 2/5/92 14°° 11 Blennidae 2 Stolephorus spp. 19 3 Total - L19 6 Goobiidae Yj9 21 Ambassis spp 3 Stolephorus spp. 19 5 Blennidae 2 Total _ _19 31 Gobiidae 11 29/4192 1 645 2 Gobiidae 11 2914/92 19°° 68 Mugil spp. 2 Ambassis spp. I Neotlthus 2 Total ._.__ 73 Ambassis spp. 11 30/4/92 6°° 98 Ambassis spp. 11 30/4/92 830 Stolephorus spp. 6 Clupeidae blennidae 2 Total 4 Goobiidae I 1 30/4/92 124 Ambassis Blennidae A: See figure 3.6 for location 210 Environmental Protection Cenitre (EPC). 56, 'I'ruong Quoc - Dzung, P1hurahU2n, Ilochimidih City. Tel. 446262 & 424524 * Fax. 84.8.447976 VIII-34 EIA. Phumy Thermal Powver Plant Project. 03. 1995 Table 3.42 (cont.) 2 3 4 5 6 7 Gobiidae I I 3014192 930 1961 Elecotridae 50 Leiognathidae 18 Ambassis spp. 8 Callionymidae 9 Cynoglossidae I Stolephorus spp. I 1 30/4/92 930 13 Nugil spp. 21 Unidentified 22 Trachyrhamplus 23 serratus 2/26 Total Gobiidae I 1 29-30/4 2032 ELeolridae 50 Ieiognathidae 18 Ambassis spp. 1(19 Stolephorts spp. 6 13 Callionymidae 9 Cynoglossidae I Nugil spp. 23 Blennidae 3 Clupcidae I Neotelhus 2 7'rarchyrhanzplus 25 .serr-atus 22 Unidenitified YZ6 2308 Total Gobiidae 12 1/5/92 750 1 4 Siolephorus spp. 13 Total 10 Anzbassis spp 1 6 1/5/92 10'- 1OO Ambassis spp 19 1/5/92 1 920 21 Goobiidae I Sole1phorus spp. 22 1 /5/92 145 2 211 1 nvironmental Protection Centre (EPC) 56, lTruong Quoc - Dzung, Phunhuan, Ilochiminh City. 1IeL. 446262 & 424524 * Fax. 84.8.447976 VIII-35 EIA. Plhunzy Thernal lower Plai tProject. 03. 1995 Table 3.42 (cont.) 1 ~ ~~2 3 4 5 67 Gobiidac 23 1/5/92 1430 2 Stolephorus spp. 5 Unidentified I Total Z6 2 Gobidiae 24 29/9/91 1120 271 Stolephorus spp. I Clupeidae 6 Ambassis spp. 2 Total 250 Source Nhatrang Oceanographic Insiitute 2 12 Environmental Protection Centre (EPC). 56, Truong Quioe - D)zung, Phunhuan, ilocihinginli City. 'rel. 446262 & 424524 * Fax. 84.8.447976 VIII-36 EIA. Phumiy Thermal Power Plant Project, 05.1995 Table 3.43 Composition of fish eggs and lavae in the Thivai river, May 1995 Famil Gobiidae Sciaenidaee Stole horus Total Number of individuals 115 5 1 1 131 Percentage 88 4 8 100 Table 3.44 Growth stages of ichthyoplanktons in the Thivai river, May 1995 Family Gobiidae Sciaenidaee Stolephorus Growth stage Total Smal Bigger Total Smal Bigger Total Small Bigger I fisb fish I fish fish_ fish fish Number of 115 33 82 5 5 0 11 3 5 individuals Percent e 100 29 71 100 I o0o I 100 27 73 Table 3.45 Number and percentage of ichthyoplanktons at various station, May 1995 1 Stations ;Harbour Thivai Vamphumy Tacbathu Total (A) (B) _(C) Number of individuals 54 65 16 135 Percentage 40 48 12 100 Table 3.46 Average number of ichthyoplanktons in various water layers, time and stations, May, 1995 - : Jhayer - Harbour Thivai Vamphumy Tacbathu . -. - 1350 1800 1950 1535 1700 12035 1450 1720 2100 Bottom to surface 0,13 1.57 0,50 1,27 0,73 0,60 0,25 1,00 0 Middle to surface 0,67 0.57 0n30 0,80 0,93 1,34 0 0,50 1.5 5m in depth to 2,33 0.67 1.00 1,00 0 1,00 1.70 0,30 0.33 surface Source: EPC/ Nhatrang Oceanographic Institute, 1995 EnioietlPoectonCe213 Environmental Protection Centre (EFPC). 56, Tnmoiig Quoc - Dzung, Plbinluan, Hochiiiiii City 2 Tel. 84.8.446262 & 424524 * Fax. 84 8 454263 VIII-37 -r APPENDIX IX SOCIO ECONOMICS OF AFFECTED GROUPS EB219.Misc EIA. Plurny Thernul Power Plant Project. 03. 1995 Table 3.47 Shrimp pond area along the Thivai river (from Vedan factory to river mouth) Village name |Area I louse Production Total production (ha) -hold (kg/ha/ye r) (ton) .___________________ Shrimp Fish Cockle Shrimp Fish Cockle A-Upstream area of the plant 398 116 177 75 70 30 PhuocAn 40 21 177 75 7 3 LongTho _ Total 438 137 78 33 B-Plant site and vicinity 101.2 20 224 560 23 57 MyXuan 86 40 204 550 18 47 PhuMy 162.7 95 142 23 Phuocl-Hoa Total 349.9 155 _ 63 104 C-Downstream area of the plant 135.6 100 142 19 HoiBai 96 70 117 86 11 8 Longliuong 700 n.a 142 99 ThanhAn 30 12000 36() Subtotal 961.6 130 8 36() Total 1749.5 1325 1346 12000 271 1 45 3fi(6 Source: Aquacultural Research Insiitute, 1995 214 Environmental Protection Cenlre (EPC). 56, Truong Quoc - Dzung. Phtunhuan. lloclliiininli City. Tel. 446262 & 424524 * Fax 84.8.447976 IX-1 EIA. Phunzy Thermal Pover Plant Project, 05.1995 Table 3.50 Total production of capture fishery in Thivai river (from Vedan factory to river mouth) Fishinz ar Total Percent Conical Trawl Scoop Fence Line Mullet Crable Shrimp Gill (ton) % set net net net hooks gill net net net net A- Upstream area of the plant Shrimp (ton/year) 119.95 116.4 236.35 21.38 Fish (ton/year) 244.80 232.8 477.60 43.20 Crab (ton/year) 24.48 24.48 2.21 Trash fish (ton/year) 367.20 . 367.20 33.21 Total . _ 1105.63 100.00 1B- Plant site and vicinity Shrimp (ton/year) 44.69 26.40 0.79 11.1 82.98 20.01 Fish (ton/year) 91.20 11.00 2.64 22.2 45.60 172.64 41.63 Crab (ton/year) 9.12 0.00 9.12 2.20 Trash fish (ton/year) 136.80 13.20 150.00 36.17 Total I_414.74 100.00 C- Downstream area of plant Shrimp (ton/year) 203.45 0.36 3.60 96.00 21.60 28.80 40.80 232.61 15.55 Fish (ton/year) 415.20 1.20 7.20 7.20 585.60 39.15 Crab (ton/year) 41.52 48.72 3.26 Trash fish (ton/year) 622.80 6.00 62880 42.04 Total _ 1495.73 100.00 Source: Aquacultural Research Institute Ea Enviroln;ielaProtcrloiliCelltre(EPC) 56. TruoIlg Quoc -Dzung. Phunhullan. flOchimiih lCity TeJ. 84 8446)262 & 424524 * Fax~ 84. 454263 EIA. Phumzy Thermal Power Plant Project, 05.1995 Table 3.51 Distribution of Proffesion of affected people by age growp Age Crop. Fishery Trading & Govennent Small Labour Total husbandaryl Services staff industries 15-24 89 5 18 6 3 2 123 Rate 72.36 4.06 14.63 4.88 2.44 1.63 100 25-34 93 4 19 7 0 8 131 Rate 70.99 3.05 14.50 5.34 0 6.12 100 35-49 81 6 18 15 2 2 124 Rate 65.32 4.84 14.52 12.10 1.61 1.61 100 50-64 44 3 1 2 1 0 51 Rate 86.27 5.88 1.96 3.92 1.96 0 100 65+ 22 1 3 0 0 0 26 Rate 84.61 3.85 11.54 0 0 0 100 Total 329 19 59 30 6 12 455 Rate 72.31 4.12 12.97 6.59 1.34 2.64 100 Table 3.52 Current land use in the project area Land for Quang Phu Ngoc Ha Total Area % Area % Area % 1. Homestead 809 0.09 540 0.09 1349 0.09 2. Husbandary . 450 0.05 8 0 458 0.03 3. Bared land 20000 0.22 0 0 20000 1.34 4. Fishery 294631- 33.15 86140 14.25 380771 25.49 5. Upland crops 6633 0.75 5500 0.91 12133 0.81 6. Paddy 127493 14.35 17870 2.96 145363 9.73 7. Frit tree 184706 20.78 22598 3.75 207304 13.9 8. Industrial/Perenial 253934 28.57 471975 78.06 725909 48.6 trees 9. Creeks 0 0 0 0 150 0 Total 888656 100 604631 100 1493287 100 .________________________________________________________________ 217 Environmental Protection Centre (EPC). 56, Truong Quoc - Dznng. Phunhuan, Hochiiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 IX-3 EIA. Phumy Thermal Power Plant Project, 05.1995 Table 3.53 Inventory of infrastructure and land affected by the project, Phumy townlet, 2.1995 No Items Quang hu hamlet Ngocha Iamlet Total Quanty % Quantity % __ 1 Total households 86 100 55 100 141 2 Displaced houses 8 9.30 14 25.45 22 3 Masonry walls I 1.16 0 0 1 4 Thatched walls 7 8.14 13 23.64 20 5 Steel sheet walls O O I 1.82 I 6 Steel sheet roof 1 1.16 0 0 _ 7 Coconut leave roof 7 8.14 14 25.45 21 8 Living houses 4 4.65 2 3.64 6 9 Garding house 4 4.65 12 21.82 16 8 Purchased land 20 23.25 13 23.63 33 _ 9 Keclained land 66 76.74 42 76.36 108 Table 3.54 Income distribution by sources of affected households No Main income Quangphu Ngocha hamlet Total hamlet _ Household % Households % Households % I Agriculture 72 83.72 30 54.55 102 72.34 2 Small 8 9.30 4 7.27 12 8.51 d_ ustries _ __ 3 Trading & I- 1.16 18 32.73 19 13.48 Services 4 Others 5 5.82 3 5.45 8 5.67 Total 86 100.00 55 100.0 141 100.00 218 Environimental Protection Centre (EPC). 56. Truong Quoc - Dzung, Phunhuan, Hochiminhi City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 IX-4 EZIA. Phunty Thermal Power Plant Project, 05.1995 Table 3.55 Living facilities of affected households by hamlets, 2.1995 No Items Quan hu hanlet Ngocha hamlet Total _ Household % Household % Household % I Television 44 51.16 33 60.00 77 54.61 2 Refregirator _ 4 7.69 0 0 4 2.84 3 Ele/Gaz store 5 5.81 1 1.82 6 4.26 4 Radio I cassette 68 79.07 39 70.09 107 75.88 S Car 0 0 0 0 0 0 6 Motobyke 55 63.95 16 29.09 71 50.35 7 Telephone 1 1.16 1 1.82 2 1.42 8 Electric 41 47.67 20 36.36 61 43.26 lighting _ 9 Water tape 3* 3.49 3* 5.45 6* 4.26 10 Wells 82 95.35 20 36.36 102 72.34 11 Toilet 51 59.30 10 18.18 61 43.26 Total 86 100 55 100 141 1 00.00 * for familly living outside Phu My townlet Source: Tables 3.51 - 3.55 Economic Research Institute of Hochimninh City, 1995 219 Envirorunental Protection Centre (EPC). 56, Truong Quoc - Dzuiig, Pliunluan, Hochiiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 IX-5 EIA. Ph1umy Thermal Power Plant Project, 05.1995 Table 3.56 Satus of employment of affected people No Code of em ploynent status Total I 2 3 4 5 6 7 8 9 10 11 1 QP 22 1 2 7 228 3 2 1 158 12 53 489 2 NH 11 I 4 O 181 0- O 1 117 19 38 372 Total 33 2 6 7 409 3 2 2 275 31 91 861 % 3.8 2.6 0.7 0.8 47.5 0.4 2.6 2.6 32 3.6 I 1 100 Note: Working status 6. As hired labour 1. For Status 7. Seeking job 2. For Co-Operatives 8. Unemployment 3. For Private Owner 9. Schooling 4. Owner 10. Households 5. Privately 11. Retired. children. disable 220 Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung. Pliunhuan, HochiniinIh City. Tel. 84.8.446262 & 424524 * Fax: 84.8.454263 IX-6 EIA. Phumy Thermal Power Plant Project, 05. 1995 Table 4.1 Expectaion of proffession of affected households No Expectation Quang hu Ngos ha Total Household %* Household %* Household %* 1 Continueing 78 90.69 29 52.73 107 75.89 - Agriculture . 2 Chauging to 8 9.30 26 47.27 34 24.11 3 Husbandary 2 2.32 0 0 2 1.42 4 Fishery 0 0 0 0 0 0 5 Trading 6 7.00 20 34.;4 25 17.73 6 Small industries 0 0 6 10.91 6 4.25 Note: * Total affected households in Quangphu (86). Ngocha (55) equal to 100% Table 4.2 Utilized plan of compensation by affected households No Used in Quan phu Ngoc a Total Household % Household % Household % I _Purchlasing land 30 34.9 19 34.5 49 34.8 2 Building house 21 24.4 10 18.2 31 22.0 3 Improving house 34 39.5 30 54.5 64 45.4 4 Purcbasing motobyke 12 13.9 17 30.9 29 20.6 5 Sharing for children 10 11.6 15 27.3 25 17.7 6 Daily exquanditure 78 90.7 45 81.8 123 87.2 7 Saving in the bank 29 33.7 11 20.0 40 28.4 8 Purchasing gold 2 2.32 1 1.82 3 2.12 9 Husbandary I 1.16 7 12.7 8 5.67 10 Trading 3 3.49 6 10.9 9 6.38 11 Small iudustries 4 4.65 1 1.82 5 3.55 12 Fishery 1 1.16 3 5.45 4 2.84 ____ Total 224 163 . 387 Source: Tables 3.56, 4.1, 4.2: Economic Research Institute of Hochiminh City, 1995 221 Environimiental Protection Centre (EPC). 56, Truong Quoc - Dzung. Plhuniluan, Hochiminiil City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 IX-7 APPENDIX X AIR DISPERSION MODELLING EB219.Misc AIR DISPERSION ANAILYSIS Air dispersion 2nalyses were carriec cut for the following cases: 1. Phumy I and 'I burninc Natural Gas - Hourly Max. 2. Phumy I and It burning Natural Gas - Annual Average 3. Phumy II burning Distillate - Hourly Max. 1) Hourly maximum concentrations A gaussian air quality dispersion model was used to compute the maxinmum hourly ground level concentraions in the area around the power plant at Phu My. Tle model used was the Industrial Source Complex (ISC2) which was developed by the U.S. EPA to predict short and long-term ground level concentrations for single and multi- point emission sources. Ihis model is an up-dated version released in 1992 of the earlier Industrial Source Short-Term Complex model (ISCST) which was developed during the late 1970's and 1980's. The ISC2 is designed to support the U.S. EPA's regulatory programme and it has been used for many types of emission scenarios. Emission data used in the dispersion model was based on maximum emissions from both the Phu My I and II plants buming natural gas at full load. The only pollutant of interest is Nitrogen Dioxide (NO2) and the stack emission characteristics for each plant are given in Table 1 Table 1 Power plants (I and 11) emission characteristics Parameter Phu My I Phu My nI Stack Height (m) 200 50 Stack Diam (im) 3.8 4.5 Exit Velocity (mls) 22.0 30.0 Exit Temp (K) 395 413 Emission Rate (g/s) 100.0 170.0 Receptor locations were selected around the plant site from a distance of 0.3km to 20 km downwind for wind directions of 0-360 degrees at 2.5 degree intervals. hbe receptor sites were at 0.2km spacing wthin the first 5km but the interval increased at larger distances downwind. Flat terrain was assumed for the topography around Phu My. Combinations of wind direction and wind speed for each atmospheric category were used to compute the maximnum ground level concentration at each of the receptors. Atmospheric stability is a measure of turbulence ( horizontal and vertical air movement) and hence the degree of dispersion of an emission plume and so is a fundamental parameter in any dispersion modelling exercise. It is dependent on the relative importance of the wind speed and degree of solar insolation during the daytime or the rate of cooling of the air close to the ground at night-time. The 6 categories used in defining the stability of the lower atmosphere are very unstable (A), unstable (B), slightly unstable (C), neutral (D), slightly stable (E) and finally stable (F). The maximum hourly N02 concentration is predicted to be about 100-110 IOgm3 within 5km of the power plant with maximum levels of about 50 ig/nm3 between about 5-20km downwind. At larger distances the predicted hourly NO2 concentrations were less than 50 pg/m3 (Figure 1). 2) Annual average concentrations In order that the atmual average NO2 ground level concentration could be calculated information was required relating to climatological conditions such as typical wind speeds, prevailing wind directions and frequency of different categories of atmospheric stability. There is limited information available on wind direction frequencies for Phu My Meteorological Station and coupled with general wind directions and speeds during the )ry' and Wet' season a representative wind direction/wind speed matrix was prepared. The wind directions were estimated at 22.5 degree intervals and 2 wind speed categories were used. The average atmospheric stability was estimated to be slightly unstable (C) and neutral (D) during the day-time and night-time hours respectively. The number of hours were equally divided into day-time and night-time. (Table 4 of main report). This excludes the occasions when stable conditions ( E or F) may develop during low wind speed conditions in the area. However it is likely that the top of the mixmg layer under these conditions will be below 200m and so the emissions from the 200m stacks will not be trapped and be able to disperse above the stable air layer. In the case of the 50m Combined Cycle Plant stacks there will be a number of hours during the year when these emissions may be trapped within the stable air layer close to the ground and result in elevated ground level concentrations as a resul. Over the year the impact on air quality of stable weather conditions is unlikely to be significant at any specific receptor location due to the variation in wind direction which wil occur under this category of stability. The annual average N02 ground level concentration is shown in Figure 2 which indicates that the maximum predicted level occurs about 6-1Okm downwind with a concentration of about 1.5-2.0 g/rm3. About 40% of the winds in the area are from the direction of NE-SE and this results in the highest annual averages occurring to the west of the power plant. Similarly with about 35% of the winds from the SSE-SW another peak in ground level concentrations also occurs to the north of the power station site. The lowest annual average concentrations are predicted to occur in the SE quadrant of the region due to the low incidence of winds from the NW. 3) Maximum hourly concentrations for open cycle Phu My II Maximum hourly ground level concentrations of NO2 due to emissions from the Phu My II power plant operating 2 x 150 MW on open cycle burning distillate were computed using the ISC2 dispersion modeL Emission characteristics for this operational scenario are given in Table 2 Table 2 Emissions from Phu My l on open cycle burning Parameter Phu My II Stack Height (m) 40 Stack Diam (m) 5.5 Exit Velocity (m/s) 40.0 Exit Temp (K) 813 Emission Rate (g/s) 500 The computations are based on the approach used for the combined impact of both power plants where the maximum hourly concentration is calculated combinations of wind direction/speed for each of the 6 atmospheric stability categones. The predicted maximum hourly concentrations are about 100 gJg/m3 within about 2km of the plant as shown in Figure 3 with peak hourly levels of 50-75 gg/m3 predicted between about 2-7km downwind. Beyond 7km the highest levels were less than 50 i g/m3. 6'tSXX~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 0 2 3 0R ) - _\_ -_e _ 0~~~~~~~~~~~~~~~~~~~~~~~001 20-18-16-14-12-10 -8 -6 -4 -2 0 2 4 8 8 10 12 14 18 18 20 ENVIROCON LTD FIG 1: MAXMUM HOURLY NO2 GROUND LEVEL CONCENTRATONS -PHUMY1 AND PHUMY Il(UG/M3) \/ ' _ __-7__ __ 0~~~~~0 -.2 0~~~~~~~~1 0.25 OG-17.5-15.O-12.5-10.0-7.5 -5.0 -2.5 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 ENVIROCON LTD ANNUAL AVERAGE NO2 GROUND LVL CONCENTRAlIONS -PHUMY I AND PHUMY II(UG/M3) v r I C~~~~~~~~~~~~~~~~~~~~I" D 0 X i 54_ X X ;~~~~~~~~~) 10 -8 -6 -4 2 0 2 4 a 8 10 ENVIROCON LTD FIG 3: MAXIMUM HOURLY NO2 GROUND LEVEL CONCENTRATIONS -PHUMY II 2 X 150MW (UG/M3) X-6 r APPENDIX XI THERMAL PLUME CALCULATIONS EB219.Misc APPENDDE J PTH MY THERMAL POWER PLANT PROJECT (Phase I) DIFFUSION ANALYSIS OF THERMAL DISCHARGE i General The cooling water temperature will nse by 7 - S°C as the water passes through the condensers. Required coolng water for Phu My thermal power plant after ultimate site development of 1,800MW will be approximately S0 m3/s. When once-through cooling is adopted, the impact of waste heat on ambient water temperature needs to be considered. Furthermore, due to two daily tidal variations in Thi Vai river, there is risk of cooling water heat re-circulation. Therefore, the optimum solution of cooling water system including the locations of a water intake and a discharge outfall, was studied to minimize the impact of waste heat on ambient water temperature and cooling water heat re-circulation for Phu MIy thermal power plant. This report describes the results of the optimization of the once-through cooling system including the hydrological and meteorological information and simulation modeling that were utilized in the feasibility study. 2. Rivers The Thi Vai river and its tributary Rach iMuonglSao river are located in the west and north of the site respectively. The discharge of both rivers may be small in the dry season. Near the site, the Thi Vai river is approximately 400m wide with a maximum depth of 25m and Rach Muong/Sao river is approximately lOOm wide with a maximum depth of 3m. The maximum water level of the Thi Val river is 2.2m above mean sea level and the minmmum is -3.3m in a hurndred year return period. The surface water temperature is 2>7 - 280C on an annual average and 32 - 33°C at the maximum and 23 - 25°C at the minimum. J/l 3. Water Intake and Discharge Outfall Locations It would be desirable to locate the water intake at the upstream and the discharge ouitfall at-the downstream of the Thn Val nver, with appropriate spacling. However, there is a governmental restnrction on occupation of Thi Vai river shore line that makes it almost impossible to set up both a water intake and an outfall at the Thi Val nver. Due to this restrctcuon, either the water intake or the discharge outfall should be set up at the Rach Muong/Sao nver. Candidate locations of the water intake and the discharge outrall are shown as St. I and St.3 (Fig. 1). Each location was evaluated as a candidate for both the intake and the discharge structure- The recomrended location of each struaure was determined through the optimization study And one more case was eveluateed that the discharge outfall was set up at approximately 230m upstream of St. 1 in the Thi Vai river, when the intake in the Rach MuonglSao river at St.3. 4. Cooling Water Heat Re-circulation. Generally, to avoid heat re-circulation, the minimum distance between a water intake and a discharge outfall in an indefinite sea is determined by the following forrnula: L =20Q where L = The mirumum distance between water intake and discharge outfall in m Q = Cooling water volume in m3/s In the case of ultimate site development of 1,800MW of thermal power plants, L becomes 1,600m (i.e. 80 m3/sec x 20 m). Therefore, for the layout of the first units of Phu My power plant, it is important to set up water intake and discharge outfall that are far enough apart to accommodate ultimate site development. In general, the nsk of cooling water heat re-circulation is considered to be high when the temperature rise at a water intake exceeds I "C. J/2 L 21~~~~~~~~~~t. 11 721 8 75 t ~~~~ ~~~~~~t. I13.9 7 22.320 -~~..- ( 1.1 11~~~71.870 7215- 17.T ~ T t Intake or DischargeL2 173507.20-1770 7230 L3 12.8 7180 1700 2.352 Survfey Stat9orn Poinit Cruiss Section) I loc St.2~~~~~~~~~~~~EE~4Ij T. ~ ~ ~ ItŽ _~- la~~~~~~~~~~~~~~~~~~~l - 1200 Intake or Discharscarg Oufal I:npacts of Waste Heat on Ambient Water Temperature At present, the impact of waste heat on ambient water temperature is still unclear. However, Ln order to preserve aquatic plant and animal communities and fishery, there is need to desisgn the once-through cooling system to minimze effects of waste heat on the ambient conditions In Japan, standards limit the water temperature at an outfall in the sea to 40°C. For Phu Mv power plant. where waste heat will be discharged to a river body rather than the sea, it might be not sufficient only to consider lirniting the water temperature at the outfall to 40°C; and some other measures may by necessary to minimize waste heat effects on the ambient conditions. Cooling Water System A small ambient temperature increase can radically alter aquatic plant and animal communities. In this regard, it is desirable not to discharge heated water (7 - S°C above ambient temperature) to the surface of the river, especially on the Rach Muong/Sao River which is considerably shallow and narrow. Even in the Thi Vai nver, the surface discharge outfall should be avoided in favor of the deep discharge outfall. The principle of the deep discharge isto reduce water temperature rses by increasing the extent of mixing and diluting the discharged water with the receiving water. Diffusion Analysis of Thermal Discharge Condition and Analysis Cases For this report two diffusion simulations of thermal discharge were carried out by using computer. Case-1; Thermal diffusion field and cooling water heat re-circulation analysis, with the water intake at St. 1 in the Thi Vai river and the surface discharge upstream in the Thi Vai river. ase-2; Thermal diffusion field analysis, with the water intake at St.3 in the Sao river and the deep discharge outfall at St. 1 in the Thi Vai river. J/4; Case-3I Thermal diffusion field analvsis, with the water intake at St. 3 in the Sao river and the deep discharge outfall at upstream from St. I (distance 230m) in ie Thi Vai nver. Input parameters and values that were used for the diffrusion analyses are shown in Table 1. Table 1 Parameters and Values Used as Inputs for The Computer Analysis Case No. I 2 3 1 Number of divided vertical seament __ 5 .4 segment I 0- 2m (2m) I 0-4m (4m) segment 2 2 - 4m (2m) 4 -9m (5m) segment 3 4 - 9m (5m) 9 - 15m (6m) sezment 4 9 - 15m (6m) 15m- segment 5 15m- - Temperature of the water 2 28.50C 2S.5°C Current velocity ' Fig. 2 Fi, -' Discharge position Fig. 3-1 i3-2 Fio. 3 velocity 12 cm/s (W165.2m x h4m)| Table 2 temperature difference 70C Table 2 hitake position Fig. 3-1 Fig. 3-2 velocxty 110 cm/s (W165.2m x 15m) | 12 cm/s (W165.2m x b4m)| Assumed Conditons for Cases-2 and 3 analyses are shown in Table 2. Table 2 Conditions for the depth and discharge Discharge water volume 80 m3/s Temperature difference 7 °C Outfall velocity 3.0 mn/s Outfall (pipe) diameter 2.4 m Numbers of outfall (pipe) 6 pcs (2 pcs for each phase) Water depth -17 m Depth of the outfall -13 m J/5 i.* . * N I-., .................. ... ... .......... ..... . ......... .. a. ............. .......... . ... ... .. ............ ..... ......... ...... ------ ------- 7- -------------- . . . . . . . . . . . *. . . . . . . .. - . . . . . . . . . . . - . - . - . - . - . 1 . i I , ' . . . . . . . . . . . . . .--j-- . o . . . .- . . . . . . . .. . . . . . .-II !,,;.. .............. ....... . ...------j!.. . ... . ....,j * - N* * - ---....................... ........I.. ........... .N 2 * , ............ . ........ , ..... . I .' ......1 ..., --- . . . .... ....... ,,',,-> .... ..... .. .......,, . _. ............ .. .. ... .. ;-'...''.. - ''' . *1 * ~~~~~------.- ~~~~~~~~~..... ... :. j. Si. .... --.--.-.-.-.-.-..-.-.-.-. ... ... . ... .. . . ........................... ..... . . . . . . . . . . . . . * . . . . ... . . . . . . . . . . . . . . . . . . . 1 1----------- ------ ---- -------''-''- ''........ '1 .... ' ' ___----------- __..._.*----'----.----''''''t. 2 ,~~~~~~~~~~------,-- ----,i'-- q--,., ....................- \.. -.. .. .. .. .. - - --- - ( S/us ) AIOI;0A : (W) P.\'T J/6 151 1)11 .9 20ill~~~~~~~~~~~~~IJ 01: ,, m,(. r,c, ,o, segmnclts :72 l g -1 Calctilitliol .Segmuentl .andi Depthl (CASIF-I) 1~~~~~~~~~ 7()()m 20ni- rfr~~~~~i bi) C) co C numrber of scgmiciils '72 I 700rn Fig. 3-2 CaIciiIaii0ii 8cgiinct~i and Deupth (CASIF-2) 101- t 1~~~~~~~~~~~ 701V 30 0 iiiintginiary otillel (CASB-3) E ill,,gil,nry otutlet (CASE-2) fitimbilet of segiiici3 ts 72 1700333 Fig 3-3 Calctulation Segmienit and( Depth (CASE-3) 7.2 Basic Theorv Tne discharge water has the density which is smaller Than tha, of the ambient wate. . because of temperature differences caused in a condenser of power plant. Therefore, af-er being discharged from an outlet, the discharged water immediatelv becins to move on the ambient water. Typicai properties of the discharged water are the diffusing direction, width and thickness of the discharge water. As the diffusion area increase. the temperature of the discharged water decreases until the balance of heat is obtained. In the mathematical model, it is possible to take into consideration physical factors, which control the chan;ng in the above properties. T-he proposed model for this study is 3 dimensional, using finite difference model, bein capable of reproducin, currents and heat balance. In this mathematical model two step calculations (flow and diffusion steps, shown Fig. 4) are carried out analiazng differential equations (I) to (7) at each time and each element in accordance with changes of calculate water velocity, water level, water temperature and salinity. Governing equations for the mathematical modei are as follows: a. Equation of Motion Equation of motion is sum of momentum of each direction and Coriolis, water level, density, air pressure and viscosity impact. i) x-Direction OI ag oap 1I apo =- (u )U _(uv)-_(uw)+f0v-g-I--- at &Y aY ax p 'xi p ax(1) a (N.'\ 8(N ) a(Nu .. aitNxi) + Z ay, a ) + R kNzi J/10 ii) y-Direction t ax av cv crv - pCD p ~C b. EutOn of Continuityn (3) a a v) a ! v) c4 5. +INy I N, _- ' I -1 N ax av cv) Cz b. Equation of Continuity au olv arW -- + = .. (3) orx Cy oz c. Free Surface Equation Free surface is vanation of movement volume in x and y direction. & = °[f z- [fEHvdz] (4) - If, -H ay -H d. Heat Balance Equation Heat balance is sum of variation of water movement and diffusion of heat in each direction. aT a a a a = (uT)- (vT)- - (wT) a aT) aT ... (5)a( a^tx a4 k ) k e. Chlorine Content Balance Equation Chlorine content balance is sum of variation of water movement and diffusion of chlonrne in each direction. ace a (U)-.a (Vce) - aa (wce) a ax G'y O'Y az CI) .... ~~~~~(6) a( aC>) a ( aC) a ( C( o'x TX o yO z f. Equation of State State of temperature and chlonne in the each element is; p = p(CU,T) .... (7) Jill J Here. the Kundsen expression is used: i.e P = --1 1000 61, = V+(c, + 010324)41l-A, B, (co,-0.1324)1 c0 = C-0.069 - 1.478 C- - 0.0015 70.C' 2 - 0.0000398 * Ce (T - 3,98) T-,-2&830 ' 503.570 T -t- 67.26 A, = T(4.7869 -0.098185T+0,0010843T2) x lo-, B, =T(18.030-0-S164T + 0.01667T-)x104 where u, v and w Flow velocity in x,y and z-directions -- 71 : Height from mean water level to free surface H Depth from mean water level to sea bottom a0 :Density of fluid fo : Conolis parameter a : Acceleration of gravity P: Atmospheric pressure T : Water temperature (°C) Ct Chlorine content (%o) NX, NY, NZ eddy viscosity in x, y and z-directions Kx, Ky, K, . eddy viscosity in x, y and z-direction k.\, k, k : eddy viscosity in x, y and z-direction The coordinate system is to be determined as shown in Fig. 5.1. The level divisions as shown in Fig. 5.2 are to be adopted in the depth z-direction. 1st layer (top-level) From surface level z = 77 to z -H, 2nd layer (level - k) From z -H, to z = -Hk 3rd layer (bottom level) From z = -H, to z = -H J/12 -boundarv STPIBoundiary conditi-on Water Veiocit: nver land FCalciuate water veloctv- r | of each element &- ..,j ,-.© Check water vel NO |_STEP_2_|_|Yes boundary |Calculate of Diffiusion| - : diffusion n+I times - : area heck of difffuslo are -N-o/X# 5 outfall ntimesn+Itimes Y n times Note: *1; in this case, check boundary velocity Fig. 4 Flow Chart of Computer Analysis J/13 /~~~~~~~~~~~~~~~~ Cl (n~ t N ~ ~ ~ ~ ~~~ I I o ~ ~ ~ ~ 1 S I. .g i- 'V ~ ~l 11 11 11 11 1 o ~ ~ ~ ~ ~ ~ t t9I-.N h S. Analvsis Results I) Case- I; In this case the water intake is located at St. I ir. the Thi Val River anc -ne sur.-ace discharge is located upstream in the Thi Vai River The simulation analysis was run for a 12-hour cycle that covered four tidal cases. namely mean inflow, high tide, mean outflow and low tide. Each rnm was started at low tide and run contmiuously through the sets of tidal conditions. The simulated velocity distributions are shown in Fig. 6- 1-1 and Fig. 6-1-2. The temperature nse distributions are shown in Fig. 6-1-3 - Fig. 6-1-5. The thermal plume at the down stream location was largest at low tide when the 1°C isotherm extended approximateiy 5kan down stream and 3°C isotherm reached to the opposite shore. The maximum temperature nse at the water intake occurred during mean outflow when the temperature rise at river surface was approximately 10C. However, the temperature rise decreased to less than 1PC at the 4m depth. From this, it can be estimated that heat re-circulation can be avoided by providing a curtain wall in front of the water intake and by tadng, cooling water from a depth that is greater than 4ni. 2) Case-2; In this case the water intake is located at St.3 in the Sao River and the deep discharge outfall at St. 1 in the ThiiVai River. The simulation analysis was run for a 12-hour cycle covering the four tidal cases in the same runmer as for Case-1. The simulated velocity distributions are shown in Fig. 6-2-1 and Fig. 6-2-2. The temperature rise distributions are shown in Fig. 6-2-3 - Fig. 6-2-5. The thermal plume for the up stream location was largest at high tide but the actual temperature rises themselves were small. The maximum temperature nse on the water surface was approximately 1.5°C at the outfall location and the temperature nrse at location St.3 (water intake) was negligible (only 0.20C). Cooling water is discharged at the deep outfall at a velocity of 3.0 mn/sec. There was some concem that cooling water reaching the surface may hinder navigation of small boats. However, the maximum velocity of cooling water at the surface, relative to the normal nver/tidal current, was less than 60 cm/sec as shown in Fig. 7. J/15S In accordance with the simulation results. the velocty a; the opposite shore is approximately 20 cn/sec. These velocities are less than the tidal current velocity of 80 cm/sec and the impact to navia'tion is therefore expected to be small. 3) Case-3; In this casethe water intake is located at St.3 in the Sao River and the deew discharge outfall at upstream 230rm from St. I in the Tni Vai River. The simulation analysis was run for a 12-hour cycle covering the four tidal cases in the same ruwner as for Case-1. The simulated velocity distributions are shown in Fig. 6-3-1 and Fig. 6-3-2. The temperature rise distributions are shown in Fig. 6-3-3 - Fig. 6-3-5. The thermnal plume for the up stream location and the actual temperature rises were same as Case-2. The thermal plume was moved upstream same as movement of the discharge outfall, but the temperature nrse was not so different from Case-2. The maximum temperature nse on the water surface was approximately 1 .50C at the outfall location and the temperature rise at location St.3 (water intake) was negligible (only 0.2°C). J/16 9 Conclusion Tne thermal diffusion of once-through cooling For Phu Mlv power plant was simuiiatecl tfr thee cases considerLng discharging tecrmoiogy and alternative locations of the water intake and the outfall. The impacts of waste heat on ambient water temoerature are considerably to be sui=ficant i the case of surface discharging on the nrver. Therefore it is not desirable or feasible to set up a discharge outfall facing the Rach Mluong/Sao nver. Through this simulation, it is concluded that the best solution to minimize impacts of waste heat on ambient conditions and to reduce the risk of cooling water heat re-circulation is to establish the water intake in the Rach MuonglSao river and the discharge outfall in the Thi Vai river, applying the deep discharging technology. Therefore the definite design of cooling water system will proceed on the basis of this conclusion. This simulation was carred out using hydrological data prepared in the feasibility stu.dy and did not consider variations of water temperature, salinity and river velocity at various depths of the Thi Vai river because these had not been measured. At present, this additional hydrological information is being collected. After completion of the additional hydrological observation, this simuiation analysis will be adjusted as necessary. f/17 S I/f~~~~~~~~~~ sl/r~ ~ ~~~', - - - - - - - - - - - g :_ ___~_~~___---__-_----_^------- i . r\- r'4 = _~~~~~~~~~~ X2 A V A .; a M i c~~~~~~~__ _ _ __ _ _ _ _ __ _ _ _ __ - I, - * - t . I------------I- z - z . : ' 'A ~ - '~ - ^1 _ X_ __,,_,_............. ._,_.. , .,..... .- ~~~~~~~~~~ - ~ ~ ~ ~ ~ ~ ~ ~~~~7-- 7 _ * .*- * ~- _ C w\_, _ _ *_ , _ _ X_ _ _ _ _ _ _ _ _c _ _ _ _ _ _ __ _= _- 0~~~~~~~~~~~~~~~~~~ A C,~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~ ~~~~~~~~~~~~~~~~~_,, __ =A _ A _ 1. I~~ ~ # A V . - A~ s ~~~~~61/f - -~~ i,,';;. - -~~~, - 4,, . ,, r. r - - - - r J - _ _ - ..-. - V = ~~-.- v '< .. I _a Ca I Ca r r~~~~~~~~~~~~~~~~~~~~4 - 44 A SR 4r4t;,~ * * * t * * * * * . * * r r z s * ((4<4, *,(*. £ = I~~~ * v t a t # ~~~~~4 Y 1V4 r .t £4W * r _',, _ >\... - + _ T r r r ,. t4 (44 '444 VY,4(4 ,, 4 ...,*£ 4,, rrMvttXvv',4 _r-fK \ _ : i C j J - j g t ^ t t v * t * w * r# t r r i v w ,.4 t (yr(444,_ 4,r- &44 - Q #e F+rr ew_ tw** Wzfv rt*- … r.(4(' .-_ - r v _- -_ ~~~~~*r_ V s' 4*F_ 4- 4a,I r44 ,...,r ( _yY I r ~ ~ ~ ~ _ . r t~~~~ Ca ._ Ca ~ ~ L- :I . _~ ilmaginlary oulct Mnnginry o.l Idtic 2~~~~'tj~lig 6-1-3. Diiiuiil of (ifacTiliertTr I LI f - I intakc ntk Meil luitlow ugh 'I'idle Fig. 6-1-3 Disliibtition of SuiTfhccTciiip)erattiz-es in thc TIcrnial Plumiie created by Discharigedi Water (CA\SE- 1, scgmuic,mt 1) LN tl0t,S iC 1agillary ot llet Jiglury outlet Lk L'.!'t1\11 r' I I I [f' L ~/ -- Ii .1 -I- :l- J LI ~ ~ ~ U L C 1st- __ | illl;lkc I iLti I IC / K ,_. _ _.._ _ . . N1Meaiti Otflllow Low lide Fig,. 6-1-4 Distilbtition of Surface Temperatures il the T'hermial P'lule created by Discharged Water (CASE- I, segmleit I) __ _______.lZoilll lmtillt2 poiI0I. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Vricl j ItIl S-=pe<=f;;, PI ,I inary otillt '( mf ) -- po.int I . lIpfa ilII ilumpummu( C. Xj. k i | ° | l' 4 2, . S X |1 p1oint4* 2 1M (16 lo point, 6-1-5 t( intake 2 2 , 21) ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~-1 *11~~~~~~~~~~~~~~~piI pi15p61 16 16 it P 201 2(1 20) Fig. 6-1-5 vertic~it Trcu, m ure Disti ibtion oni the Maill Stream (CASE I, Mean1 Outiflow) £.Z/f - - f > / K - ^ -~~~~~~~fI * 4 Al * ---. /9.- - - - - -- - c _ , . I - - A ' E - , ='. _ I , _ s~C I _.~~~~~~~~~~~~ ' I -~~~~~~~~~~~~~~~~~~~~~~~~~~~s (n,~ ~ ~ ~ ~ ~ ~ ~~~~~~~~,r ~~~~~~~~~~~~~~~~.4 i ~ ~ ~ ~ - - 1r t^ . Ak AA m ,r. S . .,,, X, C, s A n-S ' _ _ , _ __ , n # + < X # X r~~~~~~~~~~~~~~~~~~-.. 5 t e , > ' s . X > > - e > . - . - - , *, $ # < < * f X w s. _ .f~~~~~~~~~~~~~~- t ~~~~~~~~~~~- * -.-,-. ,. . . .. c~~~~~~~~~~~~~~ i ~ ~~ ~ ~~~~~~~ . rvrvW44V'l -~~~~~~~ C) ,,.rR - * -4 - *, a; j r. I ,,S*S _#stFF;v-FF-4= -ji= ,, w41~~~~~~~~~~~~~~~~~~~~~~~~~~CJ -; ffi b;- < -<-- > t i + t } s ' 5 8 2 8 s0 r # - < - - * *->*- - - >8 t i fttr* ' * " tstt . ' . 't~~~~~~~~~~~~~~~C I * * . o < < - * s s t I _~~~~~~~~~~~~~. ;~~. >,,, -. I 9 t * * . , ,- , , / t t -,Y v r .> tr *444- - - - - ,- - ._ - , _,, *_ .4 _ 42> f_ - . .4 4t. -.7_ j 4 .. .I / / / - , a ,. , P4_ t*_ rr ; ->_s >ss x Xe Jt/2; L-L~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~- '*1. 0~~Li fJ 0 4 C LI 1 N j Ln ~~~~~~0.60C-08C F _ k l e l i l li m a i l a v I l ltoe t O Ci , l t i l Fi'g. 6-2-3 D)isttilbtitioti of Stirface m'etupciatures ill IhTIhermal Ptic createdLI by Dischaligedi Waler (CASE-2, segieiit Id) tilill6~ ~~illinlry Olitlet1 t l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~lnlm () ont n c ij 0. 6 -C- ~ ~ r1 - Meall ()litilow Fig, 6-2-4 Dlistd olinta of S1ficeTelliPeritures in tile iermal Pl ti.e cuated by of Di schaged Water (C' AS E-2 , sglllt I) ~~~~~~~~~1' ~~~~~~~~~~~~~ p0111ll p1oiniu2 (,.,i1t3 - vCrIicaIl ICI1pC1aIUiFC( C) vCrtical CIcImpcraItIrc( -C) VC(;i::uI (cii O,:I iii ( ') 0 0.5 1 1.5 0 05 1 15 () t5 1 1 0.0 0.0 OI_ 2.0 2 2 0 2 0 0 '1l 3 | .0 4.0 4 0= > i Point 5 I 6.0 60 0 6 -~8.0 q 8.0 8- Ho o.g. Io0 lo Ploiuit 6 P 12.0 A 5 1 121)1 Poin 4 14 0 1| |0 III| 2 fit X / __ _____ |16.0 1621 1(1 18.1) 18.01 Poinit L 2X).) 230 0 0 5 1 1.5 0 (1.5 1 1.i (1 15 I (,. * Point ~~~~~~~~~~~~~ ~2.1) 2.0 2 1 6.0 6(1) 6 II Eig 6-2-5 Ve cical D~AI2.i CAS12.0 High2id0 4 -- ;~~~~ *; 0 I -.~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. / = i- __ _ __ __ ____ ___ ___ ___ _____ *t ft\ <___________,__ _w _ tI r sr*)**tF-Z7tr - _ _; ~~~J/Ijtw --28 . . - ~~~~~~6Z/f - :: te: __ _ _____ . .. . ,,,,,_,, ,J -t. A ! -~~~~~~ - - - _, -, -, - :t~~~~~~~ -_ - - - ___.,,. ,,- r _ c> ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ c r1 ..~~ ~ . .'- . '. r#-~ ~~~~~~~~~~~- - -~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _~ - ) ~~~~~~~~~~~~~~~_.- - . - -.. ,,,r . ,,,. -> , .7 _* _ *___ __ _- __ _'< j SAv .tr 'v7 s,{ -sP --f .r~~~~~~~~~~~~~~~~~~~~~~~~~~ r M% C/.3 '-p-ri~~~~~~~~~~~~~~~~ | r E ' *| _____ u '~~~33 Velocity distribution at thie surfaced point Velocity (cin/sec) 0 20 40 60 80 70 - - - - - - I- - - - - - I- - - - 1 -------1 - I 60 _ _ __------ I I I I 50_______ ___>____J s I__ I_ 1_ 6 0 - - - -- - - I- -\ - - - -9 I- 1/ - 1 5 - -1-0 - o L o 20 o -1-----1------1--- 1 1 1 1 4 ~ ~ ~ ~ ; lo - - - - 15 --S - - ___ .10O -50 /0 50 IO / 00 Horizonital Distance fiom Poinlt "O" (11) I I ;;3 ~~~~/ -- _ _ _ 20 - t-e--i, ,'' . /: :~~~~~~~~~~~ I I. 0 25 LL_L_I Sur-face discharged water Vertical velocity distribtutioni at Point "O" Fig 7 Velocity Distribution at Sur-faced Point APPENDIX XII OIL SPILL DISPOSAL MODELLING FOR THE THIVAI RIVER EB219.Misc EIA. Phurnzy Thermal Powier Pla,it Project. AMay, 1995 - Model of oil spill disperision itsed in this sticdv Assuming G to be water space to where oil slick may reach. G is mainly surface water layer with a tlickness of some meters. The fundamental equation dlescnrbing oil slick dislersion in C space is given as follows. a S (V (}a6- - cC ( Where: - u, v: Dispersion speed according to axises x and y, respectively, m/s. - C Oil content in water, g/m3 - DX, Dy Horizontal clirfusion coeflicietits according to x and y, respectively, cm2/s - F,: Oil residue in water after evaporation, biochemical decomposition. and settlemzenit amid self-diffusion by surface stretching force and gravity The boundary conditionis for equation (1) are depended by: - On the solid boundary points U,,C - k* C.7i = 0, t>0 (2) - On the liquid bontidary poinlts C = C, (t) whien water flows into G, t > 0 (5 C/.i 0 - nwvheni water flows out of G, t > 0 (3) Where: U:, Speed component in noninal according to outside surface of solid bouindary Cs.: Coefficient of oil density at any time at liquid boundary k: Constant Q9 Environmental Protection Centre (EPC). 56, Tmong Quoc - Dzung, Phuniuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8.454263 XII-1 EIA. Phuiny Thermial Poter Planit Project. May, 1995 Initial condition is C (r, y, 0) = C,} (x, y) The parameter v, ii, DT, DI and F, are determined according to fundamental models. Data base for thle above computation of oil slick diffusion were collected based multi - annual records of meteorohydrological of the Thival basin and surrounding area. - Piediction of oil slick d1iflitsion duie to accident on channel of the Thivai ii ver - When oil spills leaks to the river from the jetty of the Phumy or its chiannel (i.e. all points given in Figs 4.19 - 4.32), the oil slick is hard to escape to Thllivai river, despite that, tile tylical wveatlier is the rainy season or the dry season, the time of oil leaking is at high tide or ebb tide. Tlhis evaluation is practical in two aspects: Th7e area of oil polluftion is small, expense for oil collection0 solving the conseqluenice is smaller thlai thlat of in other areas; in othler Ihanlds, the level of oil contamination (even wvhen a smliall amount is spilled) is verl, high and seriouslv imipacting on the environment (of the 77,ivai iver; as lontg as there is no sutitable technology1 to avoid of leakage antd to treat effectively the environment in case of oil spill intcidenit in the Thivai river area. - In the dry season (December to April), all oil spills occurred at points niear the Phumy port and clianniiel can cause severe oil pollution to the Southern side of oil spill position on the T'hiivai river. In opposite, in such a case, the Northem side of incidenit positioin is niearly not lhreaten by such oil spill incidents if the common wind direction is East - Northeast or Northeast. - In the rainy season (May to Noveinber), all oil spill occurred at points near the Phumy port and clianiiel can only cause oil pollution to the Northem side of the Thivai river if the comimioni wind direction is Southwest or West Southwest. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .__ _ _ _ _ _ I__ _ _ _ _ _ _ _ _ __ 1 00o o Environmental Protection Centre (EPC). 56, Truong Quoc - Dzung. Phunhluan, Hochinminhi City. Tel. 84.8.446262 & 424524 * Fix. S4.8.454263 Xl1-2 EJA. Phzutzy Thermal Power Pla;,t Project. Mav, 1995 In such a case, the SoutileM si(le of incident position is nearly not threaten bv such oil spill incidents. - The oil slick from its source on channel of the Phumy harbour and the surrounding points has a very smiall diaineter in compared to the same oil slick in the sea. Hence, oil spills in thlis area are much more dangerous than oil spill offshore since the speading space is narrower and the ability of oil for evaporation, dilution and bio-deconiposition is worse. Sin7ce the speading space is conistraint as well as the oscilalion amplitude of wvater level of the Thivai rilver is great, oil spilling to the T7hivai river wvill easily contact to bottom mnud and a h7ankline, oil particles vill then quicklv adher-e to Sandy mntd and trees along shore and maintain on these objects in a long time, coausing long telnm qfticrmaths up)On7 biological environment along the T7hivai river. - The quantity of spilled oil is a factor decisive to level and scale of oil pollution. In comparisoni figures presented the oil slick from different amount of spilled oil in the same condition, it is visible that when the quantity of spilled oil is less than 30 tons, after 6 days, even no evaporation, oil is diluted and its concentration at the surface layer is very low, practically, not dangerous to the biological environment. In opposite, when the quantity of spilled oil is more than 100 tons, the scale and durance of the slick multiply many times and can impact seriously. - In all scenarios, wind is the main function controlling the oil speading in the Thivai river and surroundings. Therefore, good data about wind is essential to predict and cope effectively with oil pollution due to oil spill. It is an key problem to implement the collection and overcome oil spill aftennaths due to incident at the Plhuny harbour. - In case that spilling oil hias higih volatility, a major part of oil will be evaporated out of the water surface after 48 lhours and the level of oil pollution is tilerefore decreased maximum 60% in comparison with poorly volatile oils. The time of in7cidlentt in com7parison wvith tidal phase is nearlv meaningless in the speadir7g process o!f oil in the Thivai river as the semidiurtnal tide of l0I Environmental Protection Centre (EPC). 56. Tniong Quoc - Dzung, Phunhuan. Hochiminh City. Tel. 84.8.446262 & 424524 * Fax. 84.8 454263 Xll-3 El4A. Phumy Thermnial Por roir Plan, Projeci. Mar, 1995 current of the Thivai river is ir r egul1ar (tidal crtrent change its direction 4 times wvithin 24 houirs). - Impact of oil Oil biota - Oil film obstructs the absorption of oxygen into water, decreasing concentration of dissolved oxygen. Tlis causes adverse effect on life of aquatic animals. - Oil film adheres to vegetation and hinders respiration and photosynthesis. This fact is much worse especially to mangrove trees which are sensitive to oil pollution because that oil film covers the root system and stops the adaptability to inundated condition. - All water soluble components in oil are highly toxic to fish and shnrmp, partictlarly to larvae and juveniles. - Water polluted by oils may create favourable conditions for the development of certain algal species, some of which are toxic for fish anid shnrmp. - Some typical oil spill accidents in the area Some oil spill accidents in Hochiminh City due to ship collision have approved the above mentioned impacts. Especially, conceming to the Thivai river which has high potential of fishery and tourism, a severe oil spill accident will cause considerable socio-economic and environmental losses, directly impacting the life of residents of Tanthanh and Chauthanh districts (Baria - Vungtau province) and Cangio district (Hocihiminh City). The studies of environmential impacts of these environmental risks were carried out by EPC, ENCO, Sub- Institute of Ecology, etc. The consequences of the environmental risks caused by oil spilling from the Taiwanese slhip Uni-Humanity and Singapore tanker Nepttnes Aries were described in EPC's previous studies 32 102 Environmental Protection Centre (EPC). 56, Tn;ong Quoc - Dzung. Pliunhuan, Hochiminh City. Tel. 84.8.446262 & 424524 * Fix. 84.S 454263 XII-4 A oh r. o. -. - - tO a JT q C/P Mu : ) I~~~~~~~~~~~) 0~~~~~~~~~~~~~ ,1L41!liuil ~~~~~~~~~~66j/&'O/2 amDp 6m),ndtuoj j18 ||j" di'| Hc"' " ' ool = dap uby 7l13 l -I It~~~~~~~~~~~~: hi; *iliiiIViltlJi Lt: 1:2 L.JJ I l-A LJJ LL L 1 A L 1= I L Ll LL L=Lh LLIA '_I___ :9 J_LA lLI.L! L LLI4LL _LI LLLLILLI_ILL L1.Ii fflLLLLLLJAI I IL 1 ! 1A1. ' 1I EL Fig. 4. 19 Nctwork for computation ol oil slick diffusion along the Thivai rivcr 1 f . I 0, - \ - _ y C°- NJ w ii | (1,3 AO I!S10-A |"9 0 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~ 00'Z IOPIV 1A, 711 -; 0 3 0 O oti I-I P Figur 4.2 oilslickdisprsio in te 1-rst daysat'tr atd oilspil accdent t poitiQuIanitiiy4.19. spillty(oilil isol 200200, spiiig iin i 2hours; the oil ha eiiidensity and lOW Velocity, weather in the dry season. ;. i i ii t I i i iTi0 i, In -I, TIT I n Li . II n l r n T T l n -. T n K) r~~~<, . Li/)1 o -' J z°4 . . g / ,/~~~~~~~~~~~~~~~~~~~~~'Nt9d71 2 a a 2 > | ' - '"s I * _ _ ) / O O O O~~~~~~~~~~~~~~~~~~~~- C P 1 ~ ~~~ - r I ,7 C C Co> )J,goo 0 z~~~~~~~~~oo0( .... ........ a II . *0 a a a a~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3 . V66i/6O/?ZZa?DP 8utt'Iduwa.j )a e~ _ 0 t . ::::::1@ (tI 001 _ da;s pti6 I - j ) ooz' |apoJy flidS o - o - 2 - 12~~~~ !, ~~~~~. '4 c0 o -. -. - )K f;~~~~~~~~~~~~~~~ -' -' " K) a31 Figure 4.21 Oil slick dispetrsion in the 1irst 8 days after and oil spill accident at position I (in Fig 4.19). Quantity of spill oil is 200T, spilling time is ' hours; the oil has mediumii densiiy anid evaporate 50'7v al'ter 8 days, weather in the diry season. * - ~~~~~~~~~~ 5 -. ~~~~~~~~~,~ k m IF 7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ x~~~~~~~~~~~~~~~~~~~ IE /;f;d 2 00 o~~~~~~~~~~~~~~~~~~~~~~~~~~~ j -, I 0 07 I #e ;iraG._+wi =w't!&i tiS~~~/ ~1:4#hsii' -:zt - -'zULGi _ >t -.' - , a a a 0 '-.., / ~~~~~~~~~~~~~~~~~~~3 3 3 Figure 4.22) Oil slick r ... ,,__ kin . ~~~~Th~rmnTrTn1"Tirffr,'' 0 t~~ ~ ~ ~ ~ ~~~~~~~~~~~~~~ / o_ ............ I ............. 2ot/0 jt ~~~~~~~/'.::'''. .....:'.'" , | / / x~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ¢ ~~~~,2.* ,' s. w, , ., .L oX ............ ,O St ... *¢+.e ......'.'-.,.'-,"2,,=, l'.' .,', /] -................................... 0~~;_ .-, ...........'.'r'-', 7 /$I s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ a . S :t~ .. . _ + ~~~~~~...... .. .. .......................... v S %0+ * # l S >-B ! / S6~~~~~~~~~~~6f/r0o/:J)nP 6up1adu3oj -Ct S tt 1 <>// t4t ' - t w~~~~~~~~~~~~~~~~~~ 0oo = dajs~ pit Oe/ c c - - - -------- !- ~ ~~~~~~~~~~ '. 0 5 Figure 4.24 Oil slick dispersion in the tirst 8 dlays aftetr and oil spill accident at position 2 (in Fig 4.19). Quantity of spill oil is 150 T, spilling time is 2 hours; the oil has me:dium dlensity and low velocity, weather in the dry season. ......2.... ,,km CD~~~ a T DC >k IP~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00 ~ ~ ~ a 0 a) Y 07-7 3 ~~~~~~~~~~~~~0 o oo,Z japof dS J/oo 0 Z Z tP,-,,< / / z o < g , ° ° ° .r _ ( v , _ v . X~ ~. Figur 4.2 Oi sc disprsio in th rJrt day aftean oil spl acdetat postio i i 419 Quanty of spc oi is2T spi:'ing time is 2 hours; the oil has medium density andlowvelocity,weatherinthedryseason.o a _ 0 _~~ ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - - -Z 31 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~' 00 I da; p* am o 0 ) 0 Figre .25 Oilslik dspesio inIhe[irt Xvlys fte an oi spll ccientat osiion3 in ig .19. QanttydfSsiU il-s @2)( 1 splln imis hus hoihameimdniyadlwvoCtyiwahrntedysao. l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~. 3. .~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~~a I A~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~C 0~~~ ~~~= * r 7'r.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~r |- woou = da,s Pti - Q' _ OO.pPoi00 tdS1to o 0 o0 C 31I~~~~~~~~~~~~~~~~~~~~~~~~~~~ jt ,\ .~ - 3 Figure 4.26 Oil slick dispersion in the lirst 8 days after and oil spill accident at position 3 (in Fig 4.19). Quantity of spill oil is 200 T, spilling time is 2 hours; the oil has medium density and low velocity, weather in the dry season. \- p'j j. 07 0 - - .M \km X3 a \ o C 12~~~~~~~~~ -., ';i & >a1 3~ .......... ... rTrrr ... 7I M M M 0 1 612~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~1 ~~~I I f. (7 (zz e ~ ~~~ ~~ ~~ I 000 ,1n500 2 1PP 1d 10-; 1. \ ';! g c 4 o. . .- |r Ii 3 | - / K 3 3 3 .. ............./.i 6 i~i wo .r- It -,,l u_,W@_1J.e!&-=}; 001= Ja:s puIfiLsSLI -' 'L U"''''IUlil'111S '1 1 H ' '"1:'L"''''&............. _ ,. , . . _. . . . . . ~~~~~~~ rigure 4.27 Oil sliL:k Ldisper%bon in the tirst 8 days alter and oil spill acc ident at position 3 (in Fi8 i. 19). Quantity ot spill oil is 3() T, spillin, time is ' hours; Ihe oil has medium density and low velocity, weather in the rainy season. _, -1 & b , .8 0> c) 9 e X ~~o krn ;vg7r7T'7M'.......rTrlTrmrrr-r. nTTT 71lSiSllrl.inllinuTlllljllll ....... 9' A) ,- ' 1 - - 4'km E........... ...... ._ 0 c~~~~~~~~~ xP 0 ........ ...................Ak/1 1/I ; * 0 0 ;,' t ''g'*{>19 <- ;V'' ' ' '' : *^ ~~~~~~~~~~~~~~~~~~~~~...................... 5- /.. t core: iu 001 dap p5 I 0. :-- -: :,> 7 ) j o o . i- | | 1t! 00'Z 13P°IY '1tS ° n _0 n wiC~~~~~~~~~~~~~~~~~~~~~~~~1pl lild po - :' ,.< ~ ~~ I, / . 3 Figure 4.28 Oil slick dispersion in the first X diays al'ter andl oil spill acc:ident at position I (in Figo 4.19). Quantity of spill oil is 1()()1', spilling time is 2 liours; the oil has medliurm density andl low velocity, weather in the rainy season. I- Ni i. a ,., ,., km 0) ~ ~ ~ ~ ~ ~ ~ 1NE /° /' J.- . °,s ui /o IE ' , r ,f_ o.o X ~ a a 3. E 0 = d , 3 - 0 N. - - 7 7 = 2~~~~~~~~~~~~~e O _ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~, 1 _ * 3 Figure 4.29 Oil slick dispersion in the first 8 days al'ter and oil spill accident at position 2 (in Fig 4.L-9). QSuantity of spill oil is 200( T, spillincg time is 2 hours; the oil has medlium density andl low velocity, weather in the rainy season. os F) ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~/ . . .~~~~~~ X / v \ / v z o r */ _ ,_ t j/ /' ; / b* | I tu a3 k 3 0 __- -' ~- . . ( / ' .......... tto ors t _ dals paad .......... . ... _ ( | | | 7. 1 4/ 00 1 dZls I P 1f 11! 5 1 ° <> ° p0 n -~~~~ ~ ! - i o v 00'.1japoV jjdS 0 Figure 4.30 Oil slick dlispersion in the lirst 8 dlay s al'ter andJ oil spill accidlent at position 2 (in Fig, 4.19). Quantity of' spill oil is S() 'I, spilling; timTc is 2 hours; the oil has mcdiurn density and low velocity. weather in the rainy season. o~~~~~~~~~~~~~~~// '\17~ -P- m - rjsT- *rmT:T r ............. ..... a .,,, . 0 'Z A .?o = . C /G .° ir,~~~~~~~~~~~~~~~~~~~~~~/ , :._ _ -C ' i x - - z , Z z ';~~. - . I . 0 zsgf6tz/zAD u1do 0 0 0 - t I - , | ' *w _- /. S. * , .\ - I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - I ~ ~ ~ ~ ~ - Lu ! d~~~~~~~~~~~~~. '......................... ,,.. ..,,,,,,,; . - s s t; -4--2 ~, ~.... p ujndu.oj iE tuo da;) s p: :6 1 _ OO~~~~~~~~~~~~~~~~~~ P~~~jpoIV jn~dS P Figur 4.31 Oil slick dseso intefrt8 aya'lrand oil spill acietat psto I(iFg419.Quantity of spill oil is 50 T. spilling time is I hours; the oil has mtedium density and low velocity, weather in the rainy season. 00 CD krm t _ , _ ) / _ < 2 j L,;>; J/~~~~~~~~~~~~ , z 2 z 02 : i- - -1 - 0 O2 °vv IE~ ~ -=- -.1 00OZ1P}'1!S1! nr z z _ >- \ \ /1 / r I _ / _ n \~~~~~~~~ ~~~~~~~~~~~~~~~~~~ 0 0 _~~~~~~~ -, ----- I ' 8 ts cc~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~J .S6 tL 00i d3;s p~-6/3 \\ /I - ,- -, .,~~~~~~~~~~00alaol,Wd li Figure 4.32 Oil slick dispersionl in the first 8 days al'ttr and oil spill accident at position I (in Fitg 4.19). Quantity of'spill oil is 200T1' spilling time is 2 hours;, the oil has medium density and low velocity, weather in the rainy season. Qc APPENDIX XIII PREVENTION AND MANAGEMENT OF OIL SPILLS EB219.Misc Prevention and Management of Oil Spills w ]. Oil Uses and Storage The combustion turbines at Phumy will be fuelled using distillate oil. It is intended however to switch to natural gas as soon as it becomes available following which distillate oil will be used as a standby fuel in the event of disruptions to the gas supply. Distillate oil will delivered to the power station via the Thi vai river by marine tanker. The station will have a unloading jetties. The storage and unloading of distillate oil constitutes by far the largest potential environmental risk from oil. The storage and use of general and specialist lubricants is a second potential risk area. This stems, not from the volume of lubricant oils stored but the frequent transfer operations involving small quantities. There will be many transformers located on-site. The largest transformer will contain in excess of 15,000 litres. Loss of oil from a transformner would constitute a major impact if the oil were to enter the Thi vai river. 2. Oil Storage Containment FuelOi All fuel oil tanks will locate within a concrete containment bund sized to hold 1 10% of the tank or largest tank within it. All bunds consist of a concrete retention wall and impervious base to prevent soil and water pollution. A controlled drain fitted with a stop valve will be provided to remove storm water. Non-Fuel Oil Storage The storage of steel drums containing lubricating oils shall be within a bunded area. Bunds shall be - sufficiently sized to contain potential spillages or rupture of drums - covered to prevent accumulation of storm water, and - provided with a collection sump to facilitate spillage recovery. A supply of oil absorbent material will be provided to clean up minor oil spills within the bunded area where oil is transferred from or to delivery drums. All waste oil shall be stored and managed in a likewise manner. 3114.REP -12- Transformers All transformners within the station site shall be bunded. Bunds shall be sufficiently sized to contain any oil leakage or oil/water mixtures which may arise in the event of a transformer fire. The bund will be drainabie using a controlled shut off valve located outside of the transformner compound. Drainage shall be diverted to a dedicated oil interceptor serving only transformer bunds. This oil interceptor will be fitted with a shut-off valve. A retention pond will be installed upstrearn of the oil interceptor to collect any oil/water mixture which may arise in the event of a transformer fire. The mixture will be retained and following sufficient separation time the water released in a controlled manner enabling collection and proper disposal of oil. 3. Operational Procedures Road Tanker Unloading Operations Most deliveries of distillate and other oil will be by marine tanker. In the event of deliveries by road tanker the following procedures shall apply. A nominated person shall be appointed by the Senior Site Engineer to control and supervise the unloading operation. The tanker driver shall report to the nominated person upon arrival at the station. The nominated person shall direct the tanker driver to proceed to the designated unloading area. The nominated person shall prior to commencing the unloading operation: - determine receiving tank and tanker volumes - ensure all valves are in correct position including bund valve. The tank inlet valves shall be kept locked at all times except during unloading. - ensure oil absorbent material is at hand and any nearby surface drains are sealed - deploy hazard warning signs: No Smoking/Petroluem Hazard The nominated person shall monitor the unloading operation and ensure that all connections are properly secured, remaining at the transfer point for the duration. The tanker operator shall at all times remain beside the tanker during the transfer operation. The unloading area will; - be provided with a telephone in the event of an emergency - have notices displayed detailing instructions to be followed in the event of fire or spillage. - be covered to eliminate storm run-off and contained to protect nearby drains. 6114.REP -13- Marine Tanker Unloading O2erations Operating personnel will be deployed during the unloading of marine oil tankers: - to supervise the jetty and unloading arm connected to the tanker - to supervise the oil transfer line between the tanker and the station oil tank farm - to supervise the receiving tank. Duties of all staff deployed during the unloading operation shall be specified. A communications system should be used during the unloading operation to enable persons supervising the unloading operation to remain in contact with each other and with the Ship's Officer and Senior Station Engineer. The Ship's Officer shall be fully briefed by a member of station personnel on the unloading procedure and steps to be followed in an emergency situation. Notices displaying instructions to be followed in such an event will be displayed at the entrance to the jetties and at the station oil tank farmn. The Senior Station Engineer will initiate the station's spill response plan. Prior to commencing the unloading operation a detailed checklist shall be completed on the ship side and shore side. Only when all items have been satisfactory checked will the unloading operation begin. All tank inlet valves shall be kept locked other than during the unloading operation. Routine Inspections Station operating staff shall - complete a routine inspection each shift of the oil tank farm and fuel transfer lines - inspect the condition of the containment bund and release any uncontaminated storm water. A programme of regular mechanical inspections shall carried out and recorded for all items of oil storage and transfer plant. Tanks: Annual Inspection: external inspection noting areas of corrosion, distortion, signs of leaks, tank foundation and bund condition Five year Inspection: this includes NDT inspections to be performed on corrosion areas not previously recorded Ten year Inspection: an ultrasonic wall thickness survey shall be taken of the lower shell course and magnetic particle examination of vertical welds on the lower shell course and all nozzle to shell welds '114.REP -14- Twenty year Inspection: a detailed out of service inspection shall be completed to check the condition of the bottom plate for corrosion and settlement and to determine bottom plate and shell plate thickness. Pipelines: Annual Inspection: external visual inspection on all pipework and valves, and checks to ensure full travel of all valves Fifteen year Inspection: NDT examinations shall be performed on risk items e.g. bends, flange connections and supports. Underground sections will require internal examination or pressure testing. Bunds: The Senior Site Engineer shall surpervise the filling of all containment bunds with water to ensure their integrity and water tightness. This shall be performed on untested bunds or when commissioning new bunds. 4. Drainage All measures shall be taken to prevent entry of oil to the drainage system. Those drainage lines serving oil risk areas will be fitted with oil interceptors. All oil interceptors shall be inspected on a daily basis and emptied as required. 5. &£lLResonse Plan The Thi vai river and neighbouring aquaculture activities are at risk in the event of an oil release from any of the operations detailed above. The setting out of an oil spill response plan will enable the station to respond in a swift and well coordinated manner. The Senior Site Engineer will be responsible; - to ensure the effective implemetation and familiarisation of all station personnel with the oil spill response plan - to ensure all personnel are in a sufficient state of readiness and trained in use of response equipment - to ensure that organised training exercises are carried out on a regular basis - to ensure the availability of outside assistance, should it be required, this may include the availability of boats when deploying booms - to review the spill reponse plan and ensure that all emergency contacts are updated annually, and - to review and replace oil spill equipment as necessary. T114.REP _15_ The response procedures shall be as follows: 1. Upon observation of an oil spill or release, personnel are instructed to take the necessary steps to mitigate the spill or release ( i.e. shut off pumps, close valves, stop unloading operation, etc.) 2. Personnel are then required to contact immediately the Senior Site Engineer and inform t him as to the nature of the spill; - location of spill - type and quantity of material spilled - actions and result of actions taken to mitigate the spill, and - circumstances which caused the spill. 3. The Senior Site Enginner shall: - initiate the spill reponse plan mobilising all necessary personnel and spill containment and clean-up equipment - inform the local pollution control authority of the release informing them as to: - the source and nature of the spill - the type and volume of material released - the time and anticipated movement of the spill - the steps taken, and - other information as required by the authority. 4. The response personnel shall; - upon arrival at the spill location immediately take all measures to contain the spill and prevent it entering drains and nearby waterways. The necessary materials will be held in stores and typical items may include: - absorbent pads for blocking drains - seals for containing spills on ground - a supply of oil absorbent material - sand and sandbags - portable pumps, suction equipment and containers - shovels and brooms - in the event of a spill likely to reach a waterway, personnel shall deploy an inflatable/absorbent boom. - in the event of allocated personnel being unable to control the spill additional manpower will deployed., 5. All materials recovered shall be stored in appropriate containers. The management of this material and its ultimate disposal shall itself not constitute an environmental risk. 1114.REP -16- APPENDIX XIV HANDLING AND STORAGE OF CHEMICALS 9.Misc Mlanagement and Storage of Chemicals Drummed Chemical Storage External storage of drums containing chemicals and hazardous substances requires particular facilities which include: - an impervious hard standing storage area - a bund to ensure spillage retention with drainage to a sump - a separation of at least 4 meters from boundaries, buildings and sources of ignition - a ramp to allow trolleys and fork lift truck access - a secure fence to restrict access, and - the display of material and hazard identification signs. Chemicals will be transferred from delivery containers to bulk storage or dosage tanks using pumps. Empty carboys and drums shall be rinsed and stored separately to full containers. Chemical storage will be seperate from drummed oil storage. Bulk Chtemical Storage Each of the bulk chemical tank filling points will: -be at least 7 metres apart from each other - have different delivery hose inlet connections which are provided with lockable covers closed at all times except during unloading - be provided with a suitable draining point - have a clearly demarcated unloading area - identify the chemical and display the appropriate warning signs Each of the bulk storage tanks will: - be one and one half times the capacity of the maximum bulk delivery tanker - be fitted with audible high and low level alarms plus separate level guage - be fitted with a drain line coming from the tank bottom terminated with a valve and blank flange. No drain valve will be mounted directly onto the tank. - be contained within a bund of suitable chemical resistant material. In the event of tank rupture the bund will be so sized that no part of the tank will be submerged. The bund shall be non-drainable and contain a sump facilitating use of a suitable chemically resistant pump to transfer material to the WTP neutralisation sump for treatment. A hose reel and water supply shall be availbale for use in emergencies. REP -17- Bulk Chemical Delivery The following steps shall be followed to cover the delivery of bulk chemicals at the station. The tanker driver shall upon arrival at the station report to the designated person nominated to supervise the unloading of bulk chemicais. The nonimated person shall be responsible for ensuring the safe delivery of the chemical. The nominated person will: - check the delivery documentation carried by the tanker driver - check tanker identifcation markings - verify an order was placed by the station for this particular delivery - ensure the tanker is in a fit state to safely discharge its content. If all items are fulfilled the nominated person shall pernit the tanker to proceed to the demarcated unloading area. Upon arrival at the designated unloading area the nominated person will: - check that the receiving tank can accept the full contents of the tanker - check the tanker markings and those of the tank filling point - display hazard warning notices and cordon off unloading area to all personnel except those involved directly in unloading operation - check all unloading equipment and ensure delivery hose has been drained and contains no water - immobilise delivery tanker using wheel chocks - remove padlock from connection point and allow connection to proceed - upon connection the delivery line will be checked for leaks and defects. and - during the transfer operation continuously check the tank level and warn the tanker driver of possible overfilling. Following completion of the transfer operation the nominated person will: - ensure delivery hoses, connections, etc. are rinsed and drained - padlock delivery hose connection points. In the event of spillage during the unloading operation material must not be simply sluiced to storm water drains. Diluted material will be pumped to WTP neutralisation sump for treatment. The following protective clothing and equipment shall be used by personnel involved in the unloading operation: - single piece chemical resistant suit - combined PVC onepiece, head, neck and sealed visor face protection 'REP -t8- - PVC gloves with gaunlets. and - compressed air self-contained breathing apparatus. Proper storage facilities shall be provided for chemical clothing when not in use. Clothing shall be inspected periodically for cracking damage with attention to folds and seams. In the event of exposure it shall be thoroughly w ashed down at the first opportunity. ? A deluge shower and eye wash fountain will be installed at the tank filling points and will be tested by the nominated person prior to commencing each delivery operation. Tranpdort The delivery by road transport of chemcials to the station will fulfill the applicable national requirements. Apart from the station's duties under national safety legislation, those supplying and deliverying chemicals will be required to ensure that their employees are familar with and trained in: - the environmental and safety risks of materials under their care - measures to be taken in the event of spillage or fire - procedures to ensure safe loading of materials. IEP -19- i, APPENDIX XV CALCULATION OF CHIMNEY HEIGHTS FOR PHUMY I EB219.Misc SOCIALIST REPUBLIC OF VIETNAM POWER COMPANY No2 HO CI MINH CITY PHU MY THERMAL POWER PLANT PROJECT - PHASE I STUDY REPORT OF DISPERSION OF FLUE GAS AND STACK HEIGHT May, 1995 NEbJEC NEWJEC INC. (Leader of Consortium) ' X @~~~~--I EWBANK PREECE LIMITED POWER INVESTIGATION AND DESIGN COMPANY No2 CONTENTS PAGE INTRODUCTION ................................................ 1 2. ENVIRONMENTAL STANDARDS APPLIED TO PHU MY PROJECT . . 3 2.1. Emission Levels. 3 2.1.1. SO2 *.......................................................................... 3 2.1.2. NO2 ......................................................................... 4 2.2. Ambient Air Quality ........................... 5 2.2.1. SO2 *-...............................................................-.-----... 5 2.2.2. NO2 and Particulates ........................... 6 3. DIFFUSION CALCIJLATION ................................................ 10 3.1. Calculation Formulas Applied to Phu My Project ......... .......... 10 3.2. Calculation of Ground Level Concentration ............ .............. 13 3.2.1. Plume Formula ................... ........................... 13 *3.2.2. Atmospheric Stability ................................................ 13 3.2.3. Conversion to Long Term Intervals ....................... ............. 15 3.3. Climatic Conditions Applied to the Phu My Project ................. 15 3.3.1. Wind Direction and Frequency .......................................... 15 3.3.2. Wind Velocity .................... ............................ 15 3.3.3. Atmospheric Stability in Phu My Site .................. ............... 16 3.4. Calculation Condition for Short Term Concentration ........ ....... 18 3.5. Calculation Condition for Annual Average Concentration .......... 18 4. CALCULATION OF GROUND LEVEL CONCENTRATION ................................ 20 4.1. Required Stack Height ............ ....................... 20 4.2. Slhort Term Ground Level Concentrations ........................ .... 20 4.3. Annual Average Ground Level Concentrations ....................... 27 1. INTRODUCTION Power Company No.2 of the Socialist Republic of Vietnam (PC2) intend to construct a natural gas and heavy fuel oil fired power plant at Phu My village, Chau Thanh district, special zone Ba Ria - Vung Tau province of South Vietnam, approximately 45 km South of Ho Chi Minh City. The power station will be constructed in three phases and the first phase will be designed to be dual fired with natural gas and heavy fuel oil. The second and third phases will each have a nominal generated capacity of 600 MW giving an ultimate site generation of 1800 MW. This report describes the study of flue gas dispersion and selection of stack height for Phase 1 600 MW natural gas and oil fired power plant, including: - Selection of applicable emission and atmospheric air quality standards - Selection of stack height - Estimation of short term and annual average ground level concentrations of pollutants derived from Phu My Phase 1. Expected boiler flue gas emission data for Phu My Phase I is summarised in Table 1. These data are based on the following operating conditions:- - 90% share time of natural gas firing, 10% share time of oil firing - 7000 hrs operation tine annually with average load of 73.2 % ECR - 0.01 vol. % sulphur in natural gas, 2.8 wt. % sulphur in fuel oil - NOx emissions: at natural gas firing: 100 ppm at 5% 02 basis at fuel oil firing : 150 ppm at 4% 02 basis - Particulate emissions: at natural gas firing : Nil 3 at fuel oil firing : 250 mg/Nm dry gas - FGD (Flue Gas Desulphurization) plant: not installed Witlh natural gas firing, emissions of SO2 and particulates- are negligible small amounts, and NOx is also rather lower than that of oil firing. Therefore, so far as natural gas is used, no harmful effect to the environment, except some small effect by NOx, would be expected. On the other hand, with oil firing, huge amounts of SO2 and particulates would be emitted from the stack in comparison with natural gas firing, and NOx emission would also reach about 1.5 times of natural gas firing. The following sections of this report explain the computations and lines of reasoning whichl support these conclusions. -1- TABLE 1 BOILER FLUE GAS EMISSION DATA Flue Gas Data at Boiler MCR (Total of three units) Gas firing Oil firing Flue gas flow, wet (Nm3/sec) 499.5 488.0 -ditto-, dry (Nm3/sec) 409.5 427.5 Flue gas temperature (°C) 130 150 S02 production (kg/sec) 0.00924 2.1225 S02 concentration (mg/Nm3 in dry gas) 22.7 4962 NOx production (kg/sec as NO2) 0.0999 0.1456 NOx concentration (mg/Nm3 in dry gas) 244 341 (100 ppm @5%02) (150 ppm @4%02) Particulates (kg/sec) Nil 0.1072 Particulates (mg/Nm3 dry gas) Nil 250 2 Data of Stack Number of stack One (1) for three units (3 intemal flues) Height (discussed in this document) Size of iuternal flue 3.8m inside dia Outlet gas velocity Boiler MCR operation at gas firing 21.7 m/sec at oil firing 22.2 rn/sec 3 Expected Amounts of Emission Calculation basis: Maximum hourly emission: 100% Boiler MCR load on oil firing Maximum daily emission : 100% Boiler ECR load ou oil firing (correspoud to 95.2% BMCR) Aunual total emission Operation hours per year 100% ECR 60% ECR 40% ECR Gas firing 3285 603 2412 Oil firing 365 67 268 Expected amounts of euission: SO2 NOx (as NO2) Particulates Maximum lhourly (kg) 7642 524 386 Maxiniuu daily (tous) 174.7 11.98 8.82 Annual total (tons) 3876 1835 188 -2- 2. ENVIRONMENTAL STANDARDS APPLIED TO PHU MY PROJECT Table 2 & 3 show the emission standards and ambient air quality standards of Vietnamese Government regulation (MOSTE), provincial regulation of Ba Ria- Vung Tau, Dong Nai and Ho Chi Minh City, and the World Bank Guidelines (1988). For reference the standards of Japanese Acts for Air Pollution Prevention is attached (Attached "A"). Considering the above standards, the emission levels of pollutants from stack and ground level concentration increments caused by Phu My Project are decided as follows. 2.1. Emission Levels 2.1.1. SO2 The limitation regarding emission quantity is only specified for SO2 and only in the World Bank Guidelines. The World Bank Guidelines specify two categories for SO2 emission quantity, i.e. 500 tons/day for Unpolluted or Low polluted areas and 100 tons/day for High or Very polluted areas. (area classification is explained below Table 2). Phu My site is assumed to be classified between Unpolluted and Moderately (Low) area. (refer to Attached "B", Environmental Observation Results at Phu My Site, Feb. 10 - 11th, 1995, of which S02 concentration ranged from 0.03 to 0. I mg/m3). Expected maximum daily emission of SO2 (174.7 ton/day) for Phu My Power Planit is sufficiently lower than limitation of 500 tons/day. The emission limitations of concentration of SO2 are specified in the standards of Dong Nai Province and Ho Chi Minh City. The figure specified in Ho Chi Minh City standard is defined as "sulphuric acid mist or SO3 emission, as SO3", so this limitation is deemed not to be applied to the flue gases from boiler of power plant because almost all sulphur oxides containied in the flue gases from boiler is SO2. In case of Dong Nai Province standards there is no distinct definition, however, this is also assumed to be same as the case of Ho Chi Minh City. If the limitation of 1000 mg/Nm3 were applicable to P1iu My Power Plant, conversion of fuel oil to diesel oil or low sulphur oil with sulphur less than 0.5%, or installation of FGD plant would be required. As consequenice, no concentration limitation of S02 is applied to Phu My Project. -3- 2.1.2. NO2 NOx concentrations at stack outlet of Phu My Power Plant are now planned to be 100 vol. ppm/Nm3 @ 5% 02 basis for natural gas firing and 150 vol. ppm/Nm3 @ 4% 02 basis for fuel oil firing. These figures are far lower than that Dong Nai Province and Ho Chi Minh City, and correspond to about 70% of the World Bank Guidelines. And those values are just the same as Japanese standard applied for the boiler with flue gas quantity less than 500,000 N3/h. These targets are achievable by low NOx burner combustion alone without the need for any other additional NOx reduction system. So additional cost to achieve these targets would be small, and this application would have the benefit of avoiding the need for future modification of burner system or reduction of the load of the De- Nox system in the future. 2.1.3. Particulates The limitation of 100 mg/Nm3 in the World Bank Guide Lines is applied for high polluted areas. Therefore, the limitation of 250 mg/Nm3 according to Dong Nai Province and Ho Chi Minh City will be applied to Phu My Power Plant. In general, low NOx combustion tend to increase particulate emission. Therefore, it is difficult to attain low NOx and low particulate emission simultaneously without dust collector. Flue gases containing 250 mg/Nm3 particulates may be visibly smoky, but particulates concentration in controllable to some degree by moderating NOx emission. So the boilers are recommended to be operated with some higher NOx emission than that of design condition to improve smokiness of flue gas. until on FGD system and/oe electrostatic precipitator will be introduced. -4 - 2.2. Ambient Air Quality 2.2.1. SO2 Ambient air quality stLandards of Vietnamese and the World Bank Guidelines are summarised in Table 3. All these figures, except the figures for SO2 of the World Bank Guidelines, show the limitation of atmospheric concentration of pollutants only and not the limitation of increment of pollutant concentration by a certain emission source. In addition the World Bank Guidelines specify the allowable increment for annual average only. In case of Phu My Project, expected annual average increment may be very small because natural gas is the main fuel. Therefore, in this document, attention is focused on the ground level concentration in the short term, one-hour and 24-hour, with oil exclusive firing. Fig. 1 compares various ambient quality standards of SO2 for one-hour and 24- hiour including the Japanese standard. Regarding one-lhour values, the standard of Ba Ria - Vung Tau is more stringent thani that of Ho Chi Miih City and approx. 10% higher (i.e. less strict) than Japanese. Regarding 24-hour values, the standard of MOSTE is the lowest and it is only a half of Japanese. The concentration of 0.05 mg/M3 of MOSTE is considered too stringaent in comparison to other standards. The second lowest value is the standard of Dong Nai Province which corresponds to about 1.4 times of the Japanese standard. From the above consideration, the standard of Ba Ria - Vung Tau for one-hour maximum concentration and the standard of Dong Nai Province for 24-hour are to be applied to Phu My Power Plant. In Japanese regulation, the stack height and emitted quantity of SO2 for emission sources located in unpolluted area are so regulated that the increment to ground level concentration attributable to the subjected stack shall not exceed 30% of the ambient concentrationi limitation of one-hour. In Phu My Project, considering that oil fuel is standby only, the increments to ground level concentration attributable to the Phu My Power Plant are selected as 50% of each ambient concenitrationl limitation, i.e. 0.15 mg/m3 for 1-hour maximum 0.075 mg/m3 for 24-hour maximum -5 - 2.2.2. NO2 and Particulates The concentration of NOx and particulates in the flue gas of Phu My Power Plant are very low compared to the concentration of SO2 - about one fifteenth and one twentieth of SO2 concentration respectively. So both ambient concentrations of NO2 and particulates are easily in compliance with all standards considered. - 6- TABLE 2 FLUE GAS AIR POLLUTANT EMISSlONS STANDARDS Emission Standards tons/day mg/Nm3(l) SC2 SO2 NOx(asNOC) Particulates MOSTE BaRia Vung Tau Province-- - ........................ .............nc .............................. ......................... ....................... . ......... ........................... Dong Nai Province new sources - 1000 1000 250 existing sources - 2000 2000 500 Ho Chi Minh City new sources - 1000(2) 1000 250 existing sources - 1500(2) 1500 400 . .................. ................ ............. . ....... ... ........ .......................................................................... World Bank(1988) Unpolluted or low 500 polluted area(3) High or very polluted 100 100 area (3) Gaseous fossil fuel 86 ng/J-heat input (143 ppm . 5%/O) Liquid fossil fuel 130 ng/J-heat input (217ppm _ @~~~~~P4%02) Note: (I) The regulations of Dong Nai Province and World Bank guidelines define the concentrations as normal condition*, but other regulations describe only-as mg/ni3. In this document all figures are considered as defined as normal condition. * Normal condition; 0°C, 760 mmHg atmospheric pressure (2) These figures are specified for sulphuric acid mist or S03 emissions, and defined as S03- Therefore these figures are deemed not to be applicable to SO2 gas emissions from power plant. (3) Area classification is as follow Background Air Sulphur Background Levels (m1g/m3) Quality(S02 basis) Annual Average Max. 24hr Interval Unpolluted <0.05 <0.2 Moderately Polluted Low 0.05 0.2 high 0.1 0.4 Very Polluted >0.1 >0.4 -7 - TABLE 3 AMBIENT AIR QUALITY STANDARDS (mg/m3) Ambient Standards 10 min 30 nmun 1 hr I day Ivr MOSTE SO2 0.5 0.05 NO2 0.085 0.085 Particulates 0.15 0.05 _ BaRia Vung Tau Province SO2 0.3 0.3 0.08 NO2 0.3 0.15- Particulates 0.5 0.2 0.06 Dong Nai Province SO2 desirable 0.25 0.15 acceptable 0.50 0.35 maximum 1.00 0.80 NO2 desirable 0.25 0.12 0.08 acceptable 0.60 0.30 0.19 maximum . O..75 0.19 Particulate 1.20 0.40 desirable 0.30 0.06 acceptable 0.50 0.15 maximum 1.00 0.40 Ho Chui Minh City SO2 0.50 0.40 0.08 NO2 0.30 0.19 0.10 Particulates 0.70 0.35 0.075 World Bank SO2 0.50 0.10 unpolluted area . 0.05(1) low polluted area 0.05(1) high polluted area 0.01(1) very polluted area 0.01(1) NO2 0.1 Particulates 0.5 0.1 Note:(l) Maximum allowable increment to ground level concentration -8 - Fig. 1 COMPARISON OF AMBIENT QUALITY STANDARDS OF SO2 Ma,dnum l -hour 0.7 - E5 065 - ~ ---~----- -------- ------- ----- -----~------------:--- - -------- ................ ...... .... ................................-.-.- 06 05- - - 0-35 o 0.271 S 0 .3 ...... .. ....... .............. 0.20 o . 0..3- . ...... ... - .1- - l.. ..... ... .. . .... ....... . .. . .. ... .. . 0- MOSTE BVT DN HCMC WB JPN Maxim:m 24-hour ,-'0.7 E 0.5 ..... 0.4 0.4 ~~~~0.3 F3 0.3 ........ .......... yg 0.2 ....... ..... .0.15. u 0 . MOSTE BVT' DN HCMC WB JPN MOSTE Ministry for Science, Technology and Environnment BVT BaRia Vung Tau Province DN Dong Nai Province WB Tlhe World Banik Environmuienital Guidelines JPN Japauese Acts for Air Pollution Prevention -9- 3. DIFFUSION CALCULATION 3.1. Calculation Formulas Applied to Phu My Project (1) Calculation of Effective Height of Stack The CONCAWE * formula is to be applied to Phu My Project. The CONCAWE formula was developed in Western Europe and is one of the most frequently and most extensively used formulas around the world. * Conservation of Clean Air and Water, Western Europe This formula is defined as follows:- He = 'Ho + AH AH = 0. 175 QH, /U" where; He: effective height (m) Ho stack height (m) AH: plume rising height (m) U : wind velocity (m/s) Qll lheat emission from stack (cal/s) Ql = 1 Cp-Q-AT y specific gravity of flue gas (gIm3) Cp heat capacity af constant pressure (cal/g/k) O : flue gas quantity (m31s) AT temperature difference between flue gas and ambient air (K) While the Bosanquet formula is well known in Vietnam as well as in Japan, and used as the basic formula in Japanese Environmental Protection Acts. However, the Bosanquet formula is not universally because it gives excessively lhighl effective height in lower wind velocity in comparison to other practical formulas. So its application is limited to wind velocities around 6m/s. Fig. 2 shows the comparison of plume rise (heiglht above stack) calculated using Phu My Power Plant conditions. "Bosanquet x 0.65" is the corrected height used in the Japanese Acts. - 10- Both Bosanquet and Bosanquet x 65 show the higher plume rise than that calculated by CONCAWE, especially in lower wind velocity conditions there are significantly differences between the heights by Bosanquet and CONCAWE. For more conservative estimation of ground level concentration, the CONCAWE formula is used for Phu My Project. - 11 - Fig. 2 Plume Rise above Stack (dt/dz=0.0033 C/mn) 1500 . , _ _ _ _ , 1200 - -- _ - - -- 1100- __ __ - __ __ __ 1 900 - _.__ __. ,X, 900 - BosanquLet En i . - B- . .osanquet x 0 65 -, - - CONCAWE _ E 600 __==.C 4 500 - ____ 400 __ _ _ 300 __ __ 200 __.. 100 __ _ _ _ _ _ __ _ _ ___ _ 0 T 0 1 2 3 4 5 6 7 8 Wind Velocity (m/s) 3.2. Calculation of Ground Level Concentration To calculate diffusion of flue gas from point emission sources, plume formula is used for windy condition. 3.2.1. Plume Formula C (x, y) - - q exp ) exp ( He2 x z-ooYU 2 T 2a; where: x distance on the axis of wind direction (m). y : distance traversing the axis of wind direction (m) U wind velocity at stack height (m) q : pollutant emission (m3/s) He effective height of stack (m) ay, a, :spread width for y, z directions determined by Pasquill- Gifford diagram (m). (Fig. 3) C (x, y): ground level concentration at point (x, y) (m3/m3) The maximum ground level concentration on the wind axis (y 0) is given from the above equation as: C q exp (- He2 7r Yor,U 2ar2 3.2.2. Atmospheric Stability Diffusion of flue gas from stacks is significantly affected by the atmospheric stability (sy, a, mentioned above) of the diffusion layer. Many methods to estimate atmospheric stability have been proposed. In this document, tihe atmospheric stability diagram by Pasquill-Giffiord is applied, whicih is most popular and broadly used. Atmospheric stabilities are categorised to six classes (A to F) and shown in the table below. Overcast day Wind speed at Solar irradiation (cal/ci2h) (Cloudiness Nighlt Time lOim above GL > 50 25 - 49 S24 8-10), Over- Cloudy: Cloudy: (misec) cast night Upper 1.5-10, 4-0 Lower 1.5-7 <2 A A-B B D 2-3 A-B B C D E F 3-4 B B-C C D D E 4-6 C C-D D D D D >6 C D D D D D - 13 - Fig. 3 shows the values of ay and az vs. atmospheric stability proposed by PasquiH - Gifford, as characterised by the stability index shown above. Fig.3. Value of cy and cr in Relation withi Atmosphieric Stability . _ ) E-We by 0'ts;bl - F, 143-k .b .2 ,,2 - 2 1 ~~~ 10'- '0~~~~~~~~b P-sqiiLlGfTr _ ~~~~~~~~~1 3.2.3. Conversion to Long Ternn Intervals The concentration given by the above formulas is momentary short term (approx. 3 min) concentration. To get the concentration for longer intervals (one hour and 24 hours) the following conversion factors proposed by P.J. Meade are used. Time Conversion factor 3 min 1.0 15 min 0.82 1 hour 0.61 3 hour 0.51 24 hour 0.31 Through this conversion, one-hour maximum and 24-hour maximum concentrations become 61 % and 31% respectively of the values of calculated 3- minute concentrations. 3.3. Climatic Conditions Applied to the Phu My Project There is some information concerning atmospheric conditions of Phu My Site, but this information is not sufficient for the calculation of flue gas dispersion. In this document, the climatic conditions used for the calculation is determined as follows with some assumptions. These climatic conditions are summarised in -Table 4. 3.3.1. Wind Direction and Frequency An annual wind rose for Phu My Meteorological Observation Station are shown in Attached "C". On the basis of these data, the wind directions used for the calculation were converted from eight directions (450 sectors) to sixteen directions (22.50 sectors). The frequencies of calm condition was about 30%. However, this frequency is deleted from the above mentioned conversion because, in general, some stable wind blows at a high altitude, even when no wind is measured at ground level. Wind directions of N to SSE are allocated to "Dry Season" and S to NNW are allocated to "Wet Season" according to EPC-reports mentioned below. 3.3.2. WVind Velocity EPC-reports reported about the wind velocity and direction in Phu My as follows:- - 15 - in Wet Season: Average velocity 1.5 - 2 m/s wind direction mainly W, SW in Dry Season Average velocity 1.6 - 3.2 mfs wind direction mainly E, EN These wind velocities are assumed to have been measured at 10m height. f To make the diffusion calculation, the wind velocities at height of stack nozzle outlet are necessary, so we determine the representative wind velocities at stack height using a conversion equation of wind velocity by altitude. Representative wind velocity: Dry Season Wet Season 5 m/ s 3.5 m/s Conversion equation of wind velocity: U = Us (Z/Zs)l UI: Wind velocity at height Z Us: Wind velocity at height Zs P :0.2 - 0.3 3.3.3. Atmospheric Stability in Phu My Site The following solar ranges were reported in EPC-Reports: -In Ba Ria - Vung Tau, monthly average: 59-90 cal/cm2h From February to November : > 60 cal/cm2h If these figures are applied directly to the stability classification the atmospheric stability conditions are correspond to the most unstable conditions in corresponded ranks of wind velocity, i.e. "B" for Wet Season and "C" for Dry Season. However, it is reported that Pasquill - Gifford diagram was made originally to be used for diffusion of pollutants emitted from ground level sources, therefore, in the calculation for a large sized and higher level emission source like a stack of power plant, Pasquill - Gifford diagram gives improper results when using unstable condition. And some experimental investigations regarding diffusion of flue gas from the stack showed that in most cases the actual stabilities ranged in the neutral condition. Considering the above, stability categories of C and C-D were applied to the day times of Wet Season arid Dry Season respectively in the calculation of Phu My Project. For the night time, stability of D was applied for both seasons. - 16 - TABLE 4 CLIMATIC CONDITION USED IN DIFFUSION CALCULATION Wind Frequency Modified Representative Direction (%) frequency wind velocity Stability - __________ ( %) (m/s) Day Night N 3.3 2.4 NNE - 4.5 o) NE 9.3 6.7 ENE 9.9 5.0 C-D D E 18.3 13.0 ESE - 9.6 SE 8.5 6.1 SSE - 8.0 S 13.9 10.0 SSW - 8.5 o SW 9.7 6.9 WSW - 5. 3.5 C D W 4.6 3.3 3~ WNW - 2.4 NW 2.2 1.6 NNW - 2.0 Calm 30.2 0 ° - 17 - 3.4. Calculation Condition for Short Term Concentration The Phu My Power Plant is envisaged to operate at higher load near to its rated load in dry season, on the contrary in wet season at lower semi-load about 40%. So one hour and 24-hr concentration are calculated based on the following two conditions: - IF Dry Season: Load of Boiler : 100% Boiler MCR (BMCR)- No. of Unit. 3 units Fuel : Fuel Oil only Emission Data Same as specified for 100% BMCR in Table I Climatic condition: The conditions for day time in Dry Season are applied, i.e. Wind velocity 5m/s Atmospheric stability C-D Ambient temperature 28°C Wet Season: Load of Boiler : 40% ECR (38% BMCR) No. of Unit 3 units Fuel : Fuel Oil only Emission Data : Flue gas q'ty 185.8m3/s Flue gas temp. 1400C Pollutant emissions, SO2 0.808 kg/sec NO2 0.0554kg/sec Particulates 0.0408kg/sec Climatic condition : Day time condition in Wet Season, i.e. Wind velocity 3.5m/s Atmospheric stability C Ambient temperature 28°C 3.5. Calculation Condition for Annual Average Concentration The following calculation conditions are used: Operating condition of boiler: Operation tirne : 7000 hrs per year Load : 73.2% ECR (69.7% BMCR) No. of Unit : 3 units Fuel : 90% natural gas + 10% fuel oil mixed firing - 18- Emission data: Flue gas quantity 347.2 Nm3/h Flue gas temperature 1220C Pollutant emissions SO2 0.154 kg/s NO2 0.0728 kg/s Particulates 0.0075 kg/s Climatic condition : as Table 4 - -19- 4. CALCULATION OF GROUND LEVEL CONCENTRATION 4.1. Required Stack Height Fig. 4 and 5 show one hour maximum and 24-hour maximum concentration for dry season and wet season calculated according to section 3.4 using stack heights as parameter. From these curves, the required minimum stack height can be determined using the target ground level concentrations discussed previously. The concentration in "Wet Season" is higher than that in "Dry Season", namely the required stack height would be determined by "Wet Season". The Required stack height determined by each curve is as follow:- Dry Season: for 1 hour concentration 150m for 24 hour concentration 153m Wet Season: for 1 hour concentration 195m for 24 hour concentration 198m With some allowance, the stack height of Phu My Project is selected to 200m. 4.2. Short Term Ground Level Concentrations Fig. 6, 7 and 8 slhow the ground level concentrations on wind axis for S02, NO2 and particulates in "Wet Season" calculated using stack height of 200m. Maximum concentration appears at a point 4.97 km from the stack. Estimated maximum ground level concentration of each pollutant for the condition of stack height of 200m and "Wet Season" is as follows:- 1-hr Maximum (Mr/m3) 24-h Maximum (m2/m3) so2 0.1455 0.0740 NO2 0.00998 0.00507 Particulates 0.00735 0.00373 The concentration of NO2 and particulates are considerably lower than any standard. For reference, the ground level concentrationi of SO2 in "Dry Season" is shown in Fig. 9. Maximum concentration appears at a point 12.7 km from the stack. - 20 - Fig. 4 Maximum Grouid Level Concentration of SO2 (Dry Season) 0.25…_ _ _ Operating condition of boiler: 0.20 100%BMCR x 3units Heavy oil exclusive firing -. . \ .< . . .t %B 2 . Climatic conidition: 0.15 - .......__ =.... _ - 0.15 Vt-y seasotl Wind velocity 5mI/s Atmosplieric stability C-D tq . .........._.. ..... .. E 0.10 - ..... _ )-tDt .. _ o .s- . = _= _ = . ....................... . ... Ambient temperature 28°C 0.0 75 -- .. ...... __ __ i-_., . .1 ................................... - -- - l- 0~~~~~~~~~ ..... ....... 0.05 j _ I 0.00 50 100 150 200 250 I-leighit of Stack (m) Fig. 5 Maximum Ground Level Concentration of S02(Wet Season) -Ihr 0.35 24hr 0.30 - - -|…Operating condition of boiler: 40% ECR x 3uniits Heavy oil exclusive firing .::. . .: :: :. : : : ..: | - - \ _ -- - ~ - - - :::: ~ .: . : Climatic condition: -E 0.20 ____ ...__ ..... __ .._=..._ Wet season - ~~~~~~~~~~~~~~~~~~~~~Wind velocity 3.5SmIs . . .... Atmosphefic stability C I°15 - X . = Ambient temperature 280C o 10 -5 N 0075 j 0.00-,__ _ _ ''' -I ---- 50 100 150 .200 250 Height of Stack (m) Fig. 6 Grouid Level Concentrationi of SO2 on Wind Axis(Wet Season) I hr 0.16 --- -24hr 0.14 .77 s 7T__ _;T i t1 - i 1- Operating condition of boiler: 012 _____ \._ 4 i 40%ECR x 3units 0.12 ~~~~~~~~~~~~~~~~~~~oleclusive firinig 0.1. 1, , X Climatic condition: t~~~~ *~~~~~ 0.08 I~~~~~~~~ Wet season w - 0 t ' { -.0 :8 {--i!\ ..+ ........................................ ,, . i .; ie j j -' ,Wind velocity 3.5m /s to ° 0 06 X W 0 f : X Atmospheric stability C U ~~~~~~~~~~~~~~~~~~~~Ambient temperature 280C U 0,04 - |-' ffi -< * ' -- Cmax(lhr) 0. 1455 mng/n3 0: } :,:: :t:::,:::::.:::,::: :'::.: ; 02 _ j; 4 + ' . ' ,, 1Cmax(24hr): 0.0740 mg/m3 0.02 _y_ _ __ f _ > E S 5 - Xmax: 4.97 km 0 5 10 15 20 25 30 35 40 Distance from Stack (km) Fig. 7 Grounld Level Conceutrationi of NO2 oni Wind Axis(Wet Season) - Ihr 0.012 .24ihr 0.01 _ _ _ I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Operating rondition of boiler: 0 008 . . 40%ECR x 3units :'b i i x j | i !: ; j j j :j j jHeavy oil exclusive firing ~~~~ *~~~~~~~~0 006 ~ ; :. i1iClitmatic conditioni: CZ ~~~~~~~~~~~~~~~~~iWet season _| *. i Wind velocity 3.5rins R i U ;'. . jx i ! - i xi- -' $ ! - z ; 1 i ' . ;--l ; - ;., , l . .; . ; . Atmtospheric stability C 0 0.004 - <. {;;;. ', \ .; . ' .. ~, E iE--ji- _Ambient temperature 28°C Cmax(lhr): 0,00998 mng/rn 0002 ~~~~~~~~~~~~~~~~~~~~Cmax(24hr): 0.00507 mig/rn 0.002 - . i Xmax 4.97km 0O - a --- - . '| .'--''i -,_ - _i_r- __,-' i-__, . _ 0 5 10 15 20 25 30 35 40 Distance fron Stack (kmn) Fig. 8 Ground Level Concentration of Patticulates on Wind Axis(Wet Season) -lhr 0001 24hr 0.009 --4 L 500,000 (1) 60 ppm vol (123 mg/Nm3) 400,000< Q < 500,000 100 ppm vol. (205 mg/Nm3 Liquid fuels (4% 02 basis) Q > 500,000 130 ppm vol.(267 mg/Nm3) 400,000< Q < 500,000 150 ppm vol.(308 mg/Nm3) Particulates: Gaseous fuels (5% 03 basis) Q > 200,000 50 mg/Nm3 Liquid fuels (4% 02 basis) Q > 200,000 50 mg/Nm3 Note:(l) Q: flue gas quantity from stack (Nmni/h) Ambient Air Qualitv Standards Item 3 24 hr average I hr max. S02 0.04 ppm vol. 0.1 ppm vol. (0.108 mg/M3 @,15 QC) (0.271 mg/m3 (e,15 °C) NOx 0.06 ppm vol. (0 11S mg/m3 as N0>2P i,15 'C) Particulates 0.1 mg/m' 0.2 mglm3 - 29 - Attached "B" ENVIRONMENTAL OBSERVATION RESULTS AT PHU MY SITE (measured on Feb. 10th-1 1th, 1995) - Measured Concentration: mglm; Noise: dB, Humidity: %R.H. Measured Measured from I lh from 14h from 17h from 20h from 23h from 02h from 05h from Ogh Average Point Item to 14h| to 17h to 20h to 23h to 02h to O5h to 08h to I Ih Dust 1.7 2.6 2.4 1.6 0.9 0.7 0.8 0.8 1.44 SOx 0.1 0.09 0.08 0.08 0.06 0.05 0.07 0.06 0.076 1 NOx 0.06 0.05 0.05 0.02 0.02 0.01 0.03 0.05 0.036 CO .. . Nil - - - - Nil Noise 42-47 42-50 55-58 57-58 55-60 57-60 47-51 42-48 Humidity 56 56 60 62 62 65 60 60 Dust 2.7 3.1 3.4 1.8 1.3 0.9 2.55 2.6 2.29 SOx 0.09 0.07 0.09 0.09 0.05 0.05 0.10 0.07 0.076 2 NOx 0.04 0.03 0.02 0.01 0.02 0.02 0.04 0.03 0.026 CO - - - Nil - - - - Nil Noise 47-52 49-67 55-67 60-65 60-63 58-63 50-55 47-50 Humidity 54 54 57 60 60 60 58 58 Dust 2.9 3.5 3.2 1.7 0.8 0.6 1.9 2.6 2.15 SOx 0.09 0.10 0.07 0.05 0.03 0.05 0.07 0.08 0.068 3 NOx 0.03 0.03 0.02 0.01 0.01 0.01 0.04 0.03 0.023 CO - - - Nil - - - - Nil Noise 47-62 47-65 55-60 57-60 50-60 50-58 50-66 50-65 Hunudity 55 56 61 61 61 61 58 56 Wind Direction E ENE ENE NE NE NE NE NE __4 Wind Velocity(ni/s) .5 17 _ 15 13 12 7 5 9.4 Measured Points: I- in the center of Phu My site 2- 100 meter from Route 51 3- near Phu My Site Remarks: Thne access road to the port and the rolling steel mill were under construction and the wind velocity was very high in those days. These circumstances caused high dust content in air and high noise which mainly came from winded leaves of surrounding trees. The noise measured at 100 m from Route 51 at low wind condition showed max. 52 dB only. - 30 - Attached "C" PHU MY METEOROLOGICAL STATION WIND ROSE (MAY 1988 - APRIL 1989) WIND VELOCITY DIRECTION 1.0 - 5.0 mis 5.1 -10.0 mIs 10.1 - 15.0 m/s Num. % Num. O/D Num. __% N 45 3.2 2 O__ 0.1 _ NE 123 8.8 7 0.5 E 167 12.2 83 6.0 2 0.1 SE 105 7.6 13 0.9 S 187 13.5 6 0.4 SVV 127 9.2 7 _0.5 1 1 :_: W _ 6D 4.3 5 0.3_ _ NW 30 2.2 1 10.0 _ WIND ROSE at PHU MY METEOROLOGICAL STATION (April 1988-April 1989) N 20 NW4.- 151 xNE 10 W WE SVV/S i[ 10.1 15.0 MIS 5.1 -10.0 MIS a1.0 5.0 MIS INOTES: 1. Frequencyof calm is 30.1%. !2. Information as obtained from the Vietnamese GeographyCenter and observaUons atte Phu My Nieteorological Observation Stabon. -31 - APPENDIX XVI PHOTOS EB219.Misc EJA. Phunzy Thermal Power Pl/ut Project, 0n5.1995 SOME PHOTOS AT THE STUDY AREA V.,-~ ~ ~ ~ .,~ Photo 1. A Milestone, the Phumy Thermal Power Plant Project nearby the boundary with Vina Kyoei steel plant. Cashew trees are dominant plant in the project area Photo 2. Landscape of the agricuttural area located outside of the project 290 Eivironmiiiental Protection Centre (EPC). 56, Truong Quoc - Dzutg, Pluinhuan, Hochiniinh City. tel. 84.8.446262 & 424524 * Fax. 84.8.454263 EIA. Phmu;nv Thermal Power Plant Project, 05.1995 SOME PHOTOS AT THE STUDY AREA 1~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Photo 3. Vegetftion in the agricultural area outside of the project Photo 4, Nearby harbour development on Thivai River Environrmenital Protection Centre (EPC). 56, Tniong Quoc - Dzung, Phunhiuan, Hochiminini City. 291 Tel 84.8.446262 & 424524 * Fax. 84.8.454263 EJA. Phurny Thernial Power Planit Project, 05.1995 SOME PHOTOS AT THE STUDY AREA Photo 5. Mangrove forest at the wastern boundaty of the project sZ~~~~ .- ~~~~~~~~~~~~~~~~~~ A Photo 6, Mangrove trees grow along the Sao Stream Environmiiental Protection Centre (EPC). 56, Truong Q(Boc - Dzung, Plunliuan, Hochiminhi City. 292 Tel. 84.8.446262 & 424524 * Fax. 84.8.454263