Exe Sum North Chennai Power Eng

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Rapid Marine Environmental Impact Assessment Executive SummaryAnd Environmental Management Plan for 1200 MW

!ermal Po"er Plant at #alan$i %illage& 'ort! (!ennai

)

. INTRODUCTION

Power generation is the vital infrastructural requirement for the economic growth of our

country in recent years. s economy grows the !eman! for "ower increases at a veryfaster rate. The Private #ector "artici"ation in the !evelo"ment of "ower "ro$ects is

evi!ent in our country !ue to encouragement e%ten!e! &y the Central 'overnment

(lectricity ct) *++, an! the In!ian 'overnment vision of -(lectricity for all &y the en!

of (leventh Plan Perio! /*+110*+1* an! the limite! resources availa&le with the #tate

an! the Central sectors.

North Chennai Power Com"any 2imite! /NCPC2 is a #"ecial Pur"ose

3ehicle /#P3 "romote! &y 4 N 'rou") which is one of the largestOffshore Drilling Com"any in the worl!. NCPC2 has "ro"ose! to set u"

a Thermal Power Plant of 1*++ 56/* % 7++56 ca"acity using

im"orte! coal at 8alan$i an! 8attu"alli villages) North of (nnore Port)

Ponneri Talu9) Thiruvallur District) Tamilna!u.

This re"ort "resents the summary of Ra"i! (I stu!y con!ucte! for

NCPC2 Thermal Power Plant) &ase! on three months fiel! !ata / "ril*++:0 ;une *++: an! !ata collecte! from secon!ary sources. The

&aseline environmental scenario an! the "ossi&le im"acts of the

"ro"ose! with res"ect to air) water) soil) noise) ecology etc. was stu!ie!

an! re"ort generate!.

*. N((D O< T=( PRO;(CT

The "ro"ose! Power Plant is e%"ecte! to achieve commercial o"eration &y the en! of the(leventh Plan "erio! /*++: > 1* . This Power Plant is envisage! to meet the !eman! of

the &eneficiaries mostly in the #outhern Region an!

other regions. The "ower su""ly "osition in #outhern Region /#R !uring *++10+*)

*++*0+,) *++,0+?) *++?0+@ an! *++@0*++7 an! *++70*++:/u"to ;anuary *++: are as

followsA0

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T 42(0

PO6(R #UPP2B PO#ITION IN #OUT=(RN R('ION

Descri"tion *++ 0+* *++*0+, *++,0+? *++?0+@ *++@0+7 *++70+: /u" to

;an *++:1Pea9 Deman! **:@: 56 **?1 56 *, 1, 56 *,+:@ 56 *? ? 56 *@17@

56Pea9 vaila&ility 1 *+1 56 *+?* 56 *1 * 56 *,,7? 56 *,,:* 56 *,@*+

56Deficit ,@@7 56 1 1 56 1*@@ 56 :11

56

1?:7 56 17?@

56E of Deficit [email protected] E . E @.? E ,.1 E ., E 7.@ E(nergy

Requirement

1?+@17 5u 1?+,17 5u 1??,:* 5u 1?:7:* 5u 1@7 ** 5u 1?:1 +

5u(nergy

vaila&ility

1* + @ 5u 1,+** 5u 1,7 ?? 5u 1?@, @ 5u 1@@@ * 5u 1?,77

5uDeficit 1*?*1 5u 1++ : 5u :@*

5u

**::

5u

1*?+

5u

,@*1

5uE of Deficit . E :.* E @.* E 1.@ E +. E *.? E


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#outhern

Region

1?:)1 + 1?,)77 *@)17@ *,)@*+

(asternRegion

@7) ?* @@)*@7 1+)? 1 1+)+@

North (astern

Region

@:*) 1* @1 )7@7 1)?+: 1)177

ll In!ia @:*) 1* @1 )7@7 1++)?+, 7)?*@

6ith the a&ove in view) North Chennai Power Com"any 2imite!) in the Private #ector

has "ro"ose! to install a 1*++ 56 coal &ase! Power Plant at North Chennai) "lanne!

to &e o"erational &y the en! of 11 th


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from site/4roa! gauge .

Nearest Roa! A Thiruvotriyur Ponneri roa!

Connecting Chennai is

aroun! 1* 9ms away from the site.

Nearest =ighway A N=@ is * 9ms away from the site

/&y roa!

Rail region Jone A #outhern Railway

Nearest ir"ort A Chennai 5eenam&a99am /?@

8ms

Nearest =ar&our A (nnore Port / .7 9ms

The "ro$ect site is on the northern si!e of (nnore Port in Ponneri Talu9 of Thiruvallur

District. The !istrict is surroun!e! &y 8anchee"uram !istrict in the #outh) 3ellore

!istrict in the 6est) 4ay of 4engal in the (ast an! n!hra Pra!esh #tate in the North.

The main a!vantage of setting u" this 1*++ 56 coal &ase! thermal "ower station at

this location are as followsA

1. This "ro"ose! "ro$ect site &eing locate! a!$acent to the

in!ustrial area) "ower "lant an! har&our) ma$or &asic

infrastructure facilities are availa&le.

*. The "ro"ose! site is a &arren lan! an! the nee! for

!is"lacement of families or hamlet an! reha&ilitation of the

same !oes not arise.3. s the "ower "lant is "ro"ose! in the coastal area) sea water

is "ro"ose! for fresh water requirement. The cooling me!ium

for the con!enser is sea water from 4ay of 4engal. Once

through metho! is a!o"te! for cooling the con!enser &y sea

water. s "er the 5o(< sti"ulations the sea water !ischarge!

&ac9 in to the sea shall maintain a tem"erature !ifference of

@FC. This is achieve! &y suita&ly !esigning the con!enser) so

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that the tem"erature !ifference &etween the con!enser outlet

water an! the inlet sea water tem"erature is maintaine! as

sti"ulate! &y 5o(< gui!elines.?. vaila&ility of a!equate an! relia&le construction "ower an!

water.

?. #IT( #(2(CTION

The "resent site of the "ower "lant was selecte! after e%amining various suita&le

alternative location &ase! on the following criteria. vaila&ility of suita&le an! a!equate lan!

vaila&ility of water

vaila&ility of infrastructural facilities

(nvironmental as"ects

Roa! an! Railway ccess.

6hile selecting the site for NCPC2 Thermal "ower Pro$ect) the siting

'ui!elines of 5inistry of (nvironment an!


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*.


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:.@ m !ia of each flue. 1,. 4ul9 "ower evacuation (vacuate! to ?++ 93 an! *,+ 93 class gas

insulate! #witchgear /'I# ty"e su&station 1?. 5an"ower 1:@ 0 During Construction

?@+ 0 During O"eration K 5aintenance 1@. Cost of coal at site Rs. * @ ton 17. Net generation : *+. , 5illion 96h 1:. Pro$ect cost /5arch *++ 4ase

a. 6ithout IDC

&. 6ith IDC Rs. @*7:. Crores

Rs. @:@:.@ Crores

@. .* 6ater

The water require! will &e !rawn from 4ay of 4engal &y constructing an offshore sea

water "um" house. #eawater inta9e will &e *)::)+++m , hour. The water will &e !rawn &y

large !iameter "i"es from the offshore "um" house to the "lant. The "ro!uct water of

!esalination "lant will &e use! meeting fresh water requirement of the "ro"ose! "ower

"lant .

@. ., Coal

Coal requirement for the "ro"ose! "ower "lant will &e met &y im"orting

coal from coal fiel!s of ustralia an! In!onesia.


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@. .? Power Purchase greement

TN(4 an! TN(RC have &een 9e"t a""raise! on the status of this Pro$ect. It is "ro"ose!to su""ly *@E of "ower generate! from this mega "ower "lant to TN(4 an! the &alance

:@E to PTC) New Delhi.

@. .@ 2an! Use

Plain #an!y an! &arren lan!. verage elevation from 5ean #ea 2evel is , m. =owever)

the North "ortion of the site requires very little quantity of filling. #o there is no nee! of

&orrowing filling material from outsi!e. =owever) !uring construction time gra!ing will

&e carrie! out with the ashes availa&le from near &y "ower "lants.

7.+ (N3IRON5(NT 2 I5P CT ##(##5(NT /(I 1

In or!er to i!entify the environmental im"acts !ue to the construction an! o"eration of

the "ro$ect an! associate! facilities) an (nvironmental Im"act assessment stu!y has

&een un!erta9en) which also covers (nvironmental 5anagement Plan) Disaster

5anagement Plan an! Occu"ational =ealth an! #afety #tu!ies.

The stu!y area for (I com"rises of 1+ 8m ra!ius aroun! the "ro"ose! site for Thermal

Power Pro$ect. The stu!y has &een starte! since ;une) *++7. =owever continuous

o&servation from "ril > ;une) *++: for one season has &een consi!ere!.

7. 4 #(2IN( (N3IRON5(NT 2 #C(N RIO

The &aseline environmental status for various environmental attri&utes were carrie!

out !uring the months of "ril *++: to ;une *++: within the stu!y area through fiel!

monitoring su""orte! &y !ata from secon!ary sources.

5eteorological "arameters for 6in! s"ee!) 6in! !irection) Tem"erature) Relative

=umi!ity) tmos"heric "ressure an! Rainfall were stu!ie!.

Data collecte! in!icate that the annual rainfall is 1,++ mm) out of which the ma%imum

rainfall occurs !uring the Northeast 5onsoon "erio! /Octo&er to Decem&er .

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Tem"erature will &e ,@ C to ,: C in #ummer from "ril to ;uly an! occasionally it rises

more than ?+ C. During Decem&er an! ;anuary the tem"erature will vary from ** C to

,+ C. =owever the minimum tem"erature !oes not !ro" &elow 1 FC.

nalysis of win! s"ee! an! !irection at the "ro"ose! site shows that the win! s"ee! was

generally light to mo!erate) with win! !irections &eing 6#6 an! N(.

7. . #oil Characteristics

7. . . D ata ' eneration

The "hysicochemical an! nutrient characteristics of the soil were monitore! for &oth "re0

monsoon / ugust *++7 an! "ost0monsoon / "ril *++: season at 7 locations in the stu!y

area. t each location) soil sam"les were collecte! from three !ifferent !e"ths viL ,+ cm)

7+ cm an! 1++ cm &elow the surface. The !etails of the sam"ling locations are given

&elow.

T 42(0,

D(T I2# O< #OI2 # 5P2IN' 2OC TION#

#am"le Co!e 2ocation Distance w.r.to Pro$ect

#ite /9m

Direction

#1 Pro$ect #ite 0

#* 8alan$i 1 8m #outh

#, 8attu"alli * 8m #outh

#? 8attoor ? 8m 6est

#@ 8a!a""a99am @ 8m North 6est

#7 Palaver9a!u : 8m North 6est

7. . .* 4aseline #oil #tatus

It has &een o&serve! that the "= of the soil range! from 7.* 07.7 in!icating that the

soil is neutral in nature. The soil in the stu!y area is "re!ominantly san!y loam. The

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con!uctivity varies from 0 1:@ mho cm. The average concentrations of nitrogen)

"hos"horous an! "otassium are +.? E) +.?+E an! +.+,E res"ectively. The average

so!ium a&sor"tion ratio is +.++7 which is very much &elow the value where after the"ermea&ility of soil is affecte!. The soil in the stu!y area is "oor in fertility.

7. .* m&ient ir uality

The "rime o&$ective of the &aseline air monitoring is to evaluate the e%isting air quality

of the stu!y area. This will also &e useful for assessing the conformity to stan!ar!s of

the am&ient air quality !uring the o"eration of the "ro"ose! "ower "lant. m&ient ir

uality 5onitoring stations were set u" at si% locations. The !etails of e%isting air

quality /range of the locations are "resente! &elow.

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T 42(0?

D(T I2# O< IR U 2ITB

2ocation

Co!e

2ocation Parameters

RP5 g m , #P5 g m , #O * g m, NO% g m,

1 Pro$ect #ite 1@ 0 ?7 :? 0 :. 0 11., .1 0 1*.*

* 8alan$i ** 0 ?: : 0 1+? @. 0 1+.: .7 0 1+

, 8attu"alli ,+ 0 @ + 0 1+@ .: 0 1*. 1+ 0 1*

? 8attoor ,@ 0 7@ : 0 * .? 0 1*., 1+., 0 1*.:

@ 8a!a"a99am ** 0 ? @ 0 1+, 7 0 1+., .? 0 11.,

7 Palaver9a!u , 0 @* :: 0 , 7., 0 1+.* 0 1+.,

7. .*. O&servations on Primary Data

The o&servations &ase! on the results are summariLe! &elowA

#P5 A ma%imum value of 1+@ g m, for #P5 was o&serve! at 8attu"alli 3illage / 0, .

ll the o&serve! values are within the "rescri&e! limits. The *? hours a""lica&le limit is *++

g m, for resi!ential areas.

RP5 A The ma%imum value 7@ g m, for RP5 which was o&serve! in 8attoor 3illage

/ 0? . The ne%t highest RP5 value was @ g m , which was o&serve! in 8attu"alli

3illage / 0, . The *? hours a""lica&le limit is 1++ g m , for resi!ential areas.

#O *A The higher values of #O * are o&serve! to &e 1*. g m, at 8attu"alli 3illage / 0 ,

an! the ne%t highest was 1*., g m , at 8attoor 3illage / 0 ? . The *? hours a""lica&le

limit for resi!ential area is + g m ,

NO%A The higher values of NO% were o&serve! to &e 1*.: g m, at 8attoor 3illage / 0? .

The ne%t highest NO% value of 1*.* g m, was o&serve! at Pro$ect #ite / 01 . The *?

hours a""lica&le limit is + g m , for resi!ential areas.

7. ., 6ater uality

#electe! water quality "arameters of the surface water resources within 1+ 9m ra!ius of

the stu!y area has &een stu!ie! for assessing the water environment an! to evaluate

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antici"ate! im"act of the Pro"ose! Power Plant. Un!erstan!ing the water quality is

essential in "re"aration of (nvironmental Im"act assessment an! to i!entify critical

issues with a view to suggest a""ro"riate mitigation measures for im"lementation. ccor!ing to

P6D of the #tate 'overnment) water ta&le is very shallow in Ponneri Talu9 an! annual

variation is 1.,* to ,.7+ m. The level of e%"loration of the groun! water is very low.

7. .,. 6ater #am"ling 2ocations

6ater #am"les were collecte! for &oth "re0monsoon / ugust *++7 an! "ost0monsoon

/ "ril to ;une *++: season from si% sam"ling locations. The groun!water analysis

results are com"are! with the stan!ar!s for !rin9ing water as "er I#A 1+@++01 ,

Q#"ecification for !rin9ing 6aterH for groun! water. The !etails of the sam"ling

locations an! summary ta&ulation of "ollution "arameters are given in Ta&le0@.

T 42(0@.

6 T(R U 2ITB /Pre0 5onsoon1

2ocation

Co!e

2ocation Parameters

"= TD#/mg l1

T## /mg l1

Chlori!es/mg l1

'61 Pro$ect #ite 7.: * 7 ? 7

'6 * 8alan$i 7.7, * 7 @

'6 , 8attu"alli 7.@ *?+ Nil 7@

'6 ? 8attoor 7. 1 ,77 Nil :

'6 @ 8a!a"a99am 7. 7 , + 7 1+1

#6 7 Palaver9a!u :.1 1+@ + * ?::

T 42(0@.

6 T(R U 2ITB /Post0 5onsoon1

2ocat

ion

Co!e

Parameters

"= TD#/mg l1

T## /mg l1

Chlori!es /mg l1

"r 5ay ;un "r 5ay ;un "r 5ay ;un "r 5ay ;un

'61 7. * 7.: 7. , 1 + 1:? 1 : * 1 1 7 : :?

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'6 * 7.:? 7.:1 7.:* *@? *7, *:+ ? , * :+ 77 7*

'6 , 7.7@ 7.7 7.77 1 *+@ 1 * 1 1 Nil @? ?* @+'6 ? 7. : :.+ :., 17 1:7 1@1 1 Nil Nil 7: :+ 7@

'6 @ 7. * 7. + 7. ,++ * , ,1? * @ * @ , :7

#6 7 :.1+ :.+ :.1@ 1+*,+ 1+1 * 1++ , , * * ?7, ?, + ??*1

The analysis of the collecte! water sam"les showe! that the "= ranges &etween 7.@ to

:.1 !uring "re0monsoon an! 7.7@ to :.,+ !uring the "ost monsoon. The total !issolve!

soli!s) total har!ness) chlori!es) sul"hates an! other "arameters are all well within the

"ermissi&le limit of I#A 1+@++.

7. .?. Noise 2evel #urvey

The main o&$ective of noise monitoring in the stu!y area is to evaluate the &aseline noise

an! assess the im"act of the total noise e%"ecte! to &e generate! &y "ro"ose! "ro$ect.

Noise measurements were carrie! out using 2utron #2 ?++1 mo!el. The soun! level

meter use! was in accor!ance with I#A :: an! I(C 7@1 stan!ar!s for noise survey.

Instrument cali&ration was

cali&rate! in (TDC. #i% locations were monitore! for assessing the e%isting noise levels

in an! aroun! the "ro$ect site. The noise levels are given &elow in Ta&le 7.

T 42(07

54I(NT NOI#( 2(3(2# R(CORD(D IN T=( #TUDB R( !4/ 1S

#l. No 2ocation 21+ 2@+ 2 + 2eq 2!ay 2night 2!n

1. Pro$ect #ite ?1.@ ,7. , .: , .* ?+. ,:. ?+.,

*. 8alan$i ?+.* ,7.@ , .* ,:. ?+.+ ,:., ?+.1

,. 8attu"alli ? . ?*.1 ?1.@ ?*.+ ? . ?*.@ ? .,?. 8attoor [email protected] , .@ , .+ ?1. ?@.* , .1 ??.

@. 8a!a"a99am ?@., , .1 , . ?+., ??. , .+ ?@.+

7. Palaver9a!u ?*. ,@.* ,7. ?+.1 ?1.@ ,:., ?*.1

7. .?.* O&servations

Day time noise levels

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Noise levels !uring !ay time were foun! to &e in the range ? . 0 ?+.+ !4 / . The

ma%imum noise level was o&serve! to &e ? . !4 / at 8attu"alli 3illage an! a

minimum of ?+.+ !4 / was o&serve! at 8alan$i.

Night time noise levels

Noise levels were o&serve! to fall in the range of ,:.,0 ?*.@ !4 / !uring the night time.

ma%imum of ?*.@ !4 / was o&serve! at 8attu"alli 3illage an! a minimum of ,:., !4

/ was o&serve! at Palaver9a!u.

7 . .@. Demogra"hy an! #ocio0(conomics

#ocio (conomical survey for 1+ 9m ra!ius aroun! the "ro"ose! Thermal Power Plant

Pro$ect has &een carrie! out. The results of the survey are given in the following ta&le

/Ta&le > : .

T 42(0 :

D(5O'R P=IC #TUDB

#. No Descri"tion Total 5ale


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Terrestrial (cology

The stu!y of terrestrial ecology within the stu!y area of 1+ 9m ra!ius has &een carrie!

out through fiel! investigation. The coastal area &eing situate! &y seacoast has ami%ture of scru& ecosystem) ti!al eco system) marsh ecosystem an! agro ecosystem. The

stu!y area contains wastelan! which inclu!es scru&s) marshes an! marine) &ac9water

an! fresh water &o!ies.

The !ry tro"ical vegetation e%ists in the stu!y area. 'rasses li9e Cyano!on !actylon)

Parthenium hystero"horus) Corton sa"arsiflorus an! O!ina o!ina an! trees li9e

cacia nilotica) La!irachta in!ica) nona squamosa) Deloni% regia)


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air mo!eling software to "re!ict "ollution concentration an! or !e"osition

flu% on rece"tors from a wi!e variety of sources is use! to "re!ict the

incremental concentration. The mo!eling results are "resente! &elow.

T 42(0

R(#U2T NT CONC(NTR TION# DU( TO INCR(5(NT 2 '2C s

Pollutant Percentile

Concn. recor!e!

!uring stu!y

"erio! / g m , 1

Incremental Concentration !ue

to the Pro"ose! Power Pro$ect

/ g m, 1

Resultant Concentration / g m , 1

8m @ 8m + 8m 8m @ 8m + 8m#P5 1+?

1+. 7. , *. ? +. ? 1:.7, 1,.:? 11.7?

NO% 1*.* 1+.+ @.?+ *.,* **.* 1:.7 1?.@*

:. ., 6ater (nvironment

The "ro$ect will source its entire water requirement from the sea. The

total water requirement for the "ro$ect is *)::)+++ m , hr. The "ro$ect will

not e%tract groun!water an! hence there will &e not &e any im"act on

groun! water.

Un!er normal o"eration of the "lant) no wastewater will &e !ischarge! outsi!e the "lant

"remises. The storm water in the "ro$ect area will &e collecte! through storm water!rains an! shall &e suita&ly !iverte! to rainwater harvesting "its an! the overflow from

the rainwater harvesting "its will &e !iverte! to near&y sea. =ence im"act on water

quality is not envisage!.

:. .? #oli! 6aste 5anagement

The munici"al organic an! inorganic wastes will &e manage! in eco frien!ly manner.

Organic wastes will &e com"oste! an! will &e use! as manure an! the inorganic wastes

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will &e han!e! over to authoriLe! recyclers. long term ash management agen!a has

&een !rawn to ensure com"liance with the sh 5anagement Rules an! meet CR(P

/Cor"orate Res"onsi&ility for (nvironment Protection requirements. ll efforts will &e"ut to "romote ash utiliLation in cement in!ustry) &ric9 manufacturing in!ustry)

concrete mi%ing an! in roa! construction "ro$ects.

:. .@ Noise (nvironment

The main noise generating sources are &oilers an! tur&ines. The im"act of noise

emission from &oilers will &e minimiLe! &y acoustic enclosures an! the noise levels will

&e limite! to @ !4 S.

:. .7 'reen&elt Develo"ment

n area of acres have &een "ro"ose! to &e afforeste!. 'reen&elt has &een "lanne! to

&e !evelo"e! all aroun! the main "lant area) e%ce"t for switchyar! an! transmission

corri!or. 2arge scale "lantations shall also &e im"lemente! in all the availa&le s"aces

within an! aroun! the main "lant an! "ro$ect areas.

:. .: #ocio0 (conomics

The ma$or economic im"acts !uring the construction an! o"eration "hase is that)

increase! availa&ility of !irect an! in!irect em"loyment. 2ocal "eo"le will &e &enefite!

after commissioning of the "ro"ose! "ro$ect in terms of "etty to ma$or contractual $o&s

an! associate! &usiness esta&lishments.

:. . Reha&ilitation an! Resettlement Plan

No nee! of reha&ilitation an! resettlement as the "ro$ect site is a &arren lan! an! no

near &y villages get affecte! &y the "ro$ect

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.+ (nvironmental 5onitoring Programme

Post "ro$ect environmental monitoring is im"ortant in terms of evaluating the

"erformance of "ollution control equi"ments installe! in the "ro$ect. The sam"ling an!analysis of the environmental attri&utes will &e as "er the gui!elines of CPC4 TNPC4.

The num&er of sam"ling stations in each of these !isci"lines) frequency of sam"ling an!

"arameters to &e analyLe!) in an! aroun! the "ro$ect site are "resente! &elowA

T 42(0

(N3IRON5(NT 2 5ONITORIN' PRO'R 55(

#.

No

rea of

5onitoring

Num&er of

#am"ling #tations


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7. 6ater uality #ea 6ater)

u"stream of inta9e

an! !own streamof !ischarge "oint

uarterly "=) Tem") Con!uctivity)

T##) TD#) 4OD) OK'

=eavy metals

:. #oil roun! the ash!is"osal area Kclose to airmonitoringstations.

Bearly Once Physicochemical "ro"erties)

Nutrients) =eavy metals

. Terrestrial(cology

6ithin 1+9m)aroun! the "ro$ect

Once in threeyears

#ym"toms of in$uries on"lants

. quatic (cology 5arine 6ater Once in three

years

Density an! Diversity of

fish) "lan9ton an!

macroinverti&rates.

.+ (N3IRON5(NT 2 5 N '(5(NT P2 N

. (nvironment 5anagement Plan !uring Construction Phase

During construction "hase) the construction activities li9e site leveling) gra!ing)

trans"ortation of the construction material cause various im"acts on the surroun!ings.

. . ir uality 5anagement

The activities li9e site !evelo"ment) gra!ing an! vehicular traffic contri&ute to increase

in #P5 an! NO% concentration. The mitigation measures "ro"ose! to minimiLe the

im"acts are A

6ater s"rin9ling in construction area.

Pro"er maintenance of vehicles an! construction equi"ment.

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. .* 6ater uality 5anagement

The waste water from vehicle an! construction equi"ment maintenance centre willcontri&ute oil an! grease concentration. The wastewater from canteen an! office

facilities will contri&ute to higher 4OD levels. The mitigation measures "ro"ose! to

minimiLe the im"acts areA

#e!imentation tan9 to retain the soli!s from run0off water.

Oil an! grease tra" at equi"ment maintenance centre.

!equate sanitary facilities for the construction la&ours.

. ., Noise 2evel 5anagement

O"eration of construction equi"ment an! vehicular traffic contri&ute to the increase!

noise level. In or!er to control the noise "ollution from the "ro$ect) re!uction in noise

levels shall &e achieve! through)

Pro"er lay out !esign of the &uil!ings an! "lant area.

'oo! maintenance of vehicles an! construction equi"ment

Provision of green &elt an! afforestation will further hel" in re!ucing the noiselevels.

Provision of ear"lugs an! earmuffs to wor9ers.

. .? (cological 5anagement

s the "ro$ect site is a &arren lan! an! to minimiLe the im"act on the ecology a&out

acres have &een "lanne! for green&elt !evelo"ment.

. .?.* 5arine (cology

The marine ecological management of the stu!y area is given in the re"ort "re"are! &y

5 s. In!omer Coastal =y!raulics) Chennai.

/i1 (cologically #ensitive reas

There are no ecologically sensitive areas within the stu!y area of 1+ 8m.

/ii1 Rare an! (n!angere! #"ecies

INDOMER

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)

There are no rare an! en!angere! s"ecies foun! in an! aroun! the "ro$ect site.

.* (nvironment 5anagement Plan !uring O"eration Phase

NCPC2 has the management control for setting u") o"erations an! maintenance of the

"ro$ect. 4ase! on its vast e%"erience NCPC2 has alrea!y envisage! various "ollution

control environmental measures for the "ro$ect.

During o"eration "hase) the im"acts on the various environmental attri&utes shoul! &e

mitigate! using a""ro"riate "ollution control equi"ment.

.*. ir Pollution 5anagement


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)

T 42(0

(


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.*., Noise Pollution 5anagement

In the "rocess) various equi"ments li9e "um"s) cooling tower) com"ressors etc generate

the noise. The recommen!ations to mitigate higher noise levels areA(qui"ment will conform to noise levels "rescri&e! &y regulatory authorities.

Provision of acoustic enclosures to noise to noise generating equi"ments li9e

"um"s.

Provision of thic9 green&elt to attenuate the noise levels.

Provision of ear"lugs to the wor9ers wor9ing in high noise level area.

.*.? #oli! 6aste 5anagement

The munici"al waste organic an! inorganic will &e manage! in eco frien!ly manner.

Organic wastes will &e com"oste! an! will &e use! as manure an! the inorganic wasteswill &e han!e! over to authoriLe! recyclers. The !aily coal requirement of &oth the units

is a&out 1,,** tons at + E 5CR. The ma%imum ash content in the coal is 1@ E an! the

ash generate! "er !ay &y &oth the units is a&out 1:+@ tons at + E P2


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)

1++E !is"osal of


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em"loyees li9ely to &e e%"ose! to these con!itions. In a!!ition) full0fle!ge! hos"ital

facilities shoul! also &e "rovi!e! roun! the cloc9 for atten!ing emergency of wor9ing

"ersonnel. The goo! house 9ee"ing "ractice an! fire fighting arrangements shoul! &estrictly enforce!.


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li9e #tate Pollution Control 4oar!. n environmental management grou" shall &e

esta&lishe! at "ro$ect consisting of #enior (%ecutives an! su""orting staff.

?.+ CO#T PRO3I#ION#


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)

9orests& :ovt) of India) !e 4aseline data "ere collected along t!ree transects separated eac!

4y 2), 5m apart "it! t!ree sampling stations 1 5m& 2 5m& and * 5m off t!e coast into t!e

sea3 along eac! transect) In addition& one station at , 5m distance at mid transect is alsocovered) !e study area covers around *0 5m 2) !e studies "ere carried out on p!ysical&

c!emical and 4iological aspects) !e data collection "as carried in 7uly and August& 200-

covering t!e sout!"est monsoon season)

2.1. Physical Envi !n"#n$

!e "ind patterns during morning !ours and evening !ours s!o" t!e influence of land;sea

4ree


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4iologically productive at primary and secondary levels) !e su4;tidal 4ent!ic fauna is

moderately ric! in diversity and num4ers compare to t!e Inter tidal 4ent!ic fauna)

2.(. Bi!l!)ical Envi !n"#n$

!e marine flora and fauna also indicate t!e existence of diverse population) !e area is ric!

in fis!ery 4ot! pelagic and demersal) !e study on various oceanograp!ic parameters and

t!e information on ad$acent region indicates t!at t!e coastal "ater is clean and !ig!ly

productive) 'evert!eless& t!e values of P@( and trace metals indicate t!at t!e area is

influenced 4y t!e Ennore cree5 located in t!e sout! of t!e pro$ect region "!ic! 4rings large

industrial "astes from t!e upstream) !e Ennore Port situated nort! of Ennore cree5 also

contri4utes to oil pollution due to t!e operation of s!ips and tugs on t!e large scale)

(. MODELLIN*

(8RMI model "as used to study t!e mixing at nearfield and MI#E 21; 9 8W ;A= model

"as used for far field mixing) !e study on (8RMI model s!o"s t!e initial mixing ually effective for t!e outfall located at distance of ,00 m

compared to t!e results o4tained at .,0 m and 1000 m distances into t!e sea) !e "arm

"ater disc!arged 4eyond ,00 m distance "ill !ave negligi4le impact on t!e marine

environment)

+. ANTICIPATED ENVIRONMENTAL IMPACTS AND MITI*ATION

+.1. P #,ic$i!n !- i" ac$s

!e construction of sea"ater inta5e and t!e "arm "ater outfall "it! piled $etty for carrying

pipelines "ill !ave marginal magnitude of impact on6 Sea"ater& Marine ecology& and use

and (ommunity) !e magnitude of adverse impact appears to 4e moderate)

+.2. I" ac$ ass#ss"#n$

!e 4aseline data collected from t!e pro$ect region and t!e revie" of t!e availa4le

information indicate t!at t!e "ater >uality parameters are "it!in t!e accepta4le limits for

t!e coastal "aters) !e "ater >uality of t!e "arm "ater disc!arged in to t!e sea is confined

to t!e stipulated standards of t!e amil 'adu Pollution (ontrol Board) !e construction of

piled $etty& inta5e !ead& and outfall diffuser in t!e coastal region "ill result in marginal

INDOMER

2/


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impacts on marine community viuaculture) But suc! impact is

confined to a limited duration of t!e period of construction) !e analysis on >uantity of sea

"ater dra"n and t!e >uantity of disc!arge indicate t!at impact due to suc! activity "ill 4erestricted to a smaller area "it!in 1/0 m)

+.(. Mi$i)a$i!n

!e $etty !as to 4e constructed "it! elevated trestle to allo" t!e local 4oats to sail freely

4et"een t!e piles) !e inta5e !ead and diffuser !ead !ave to 4e designed in order to avoid

vortex formation) It s!ould not cause any danger to t!e 4oats and fis!ermen moving in t!e

vicinity) !e inta5e s!ould !ave appropriate screens and tras! 4ars "it! appropriate

openings to minimi

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