Kasia Iron Dolomite Mines (English)

8/8/2019 Kasia Iron Dolomite Mines (English)

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EXECUTIVE SUMMARY OF DRAFT EIA

OfKASIA IRON AND DOLOMITE MINE

Area of the mine: 194.196 HaKasia Village, Barbil Tehsil, Champua Sub Division,

Keonjhar District, Orissa

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ENHANCEMENT OF IRON ORE PRODUCTION

FROM 3.6 TO 7.5 MTPA (RoM)

&

PROPOSED 0.7 MTPA

IRON ORE BENEFICIATION PLANT

By

ESSEL MINING AND INDUSTRIES LTD.AN ISO 9001, ISO 14001 & OHSAS 18001

CERITIFIED COMPANY

(March 2008-May 2008)

Prepared By

< B.S. ENVI-TECH (P) LTD.,Hyderabad 500 057


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EXECUTIVE SUMMARY

1.1 INTRODUCTION

Essel Mining & Industries Ltd. (EMIL), a company of Aditya BirlaGroup is operating KASIA IRON AND DOLOMITE MINES (KIDM)

spreading over an area of 194.196 ha at Kasia Village, Barbil Tehsil,

Champua Sub Division, Keonjhar District, Orissa

1.2 PROJECT DETAILS

EMIL proposes to expand the production capacity of the mine at a

project cost of Rs 117.251 crores. The expansion proposal comprises

the following:

1. Enhancement of Iron ore production from 3.6 to 7.5 MTPA (RoM)

2. Installation of Beneficiation Plant alongwith Tailing Pond within the

leasehold having production (concentrated) quantity of 0.7 MTPA.

Over the years of mining operation, about 6.5 million tonnes of

low-grade/off-grade material ((below 60% Fe) has been generated

and stored at existing dump -yards. Beside this off-grade material,

about 1.63 million tonnes of sub-grade material will be generated

during the planning period. In the process of mining in future, there is

a regular generation of sub -grade ore which is likely to

continue.

Keeping in view the large amount of off-grade material presently

available and future expansion strategies of the mine, EMIL proposed

to set up an iron ore beneficiation plant to utilize the low-grade

material to produce sinter feed fines. The sub-grade material will be

admixed suitably in the feed, and progressively replace more of off-

grade material to attain a reasonably acceptable grade of product

economically.

The proposed beneficiation plant is planned to be designed for a rated

capacity of 0.7 MTPA. This would enable the plant to treat 1.1 million

tons of low grade ore per annum (MTPA) to produce about 0.7 MTPA of

sinter feed materials.

1.3 PROJECT REQUIREMENTS

Sources of water supply for its operations:

Bore wells within the mining lease areaWater from Karo River through pipeline.


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EMIL is presently using 118 m3/day for dust sprinkling at ore crusher

unit, Sprinkling at Mines (Water Tanker), Drinking water at mines and

Domestic use at colony. With the increase in production and

installation of beneficiation plant, the total water requirement

increases to 4000 m3/day.

EMIL has applied to IPICOL for surface water requirement of 4152.5

cum /day. IPICOL has approved 1.16 cusec i.e.2839.78 cum/day of

surface water against the above requirement in first phase.

The mine gets dedicated power supply from NESCO power Supply

Company through a 11 KV line. Power is mainly consumed by Screen

Plant, Lighting of Mine and Domestic purpose.

EMIL has employed about 437 persons for carrying out the mining.

Another 68 persons will be recruited under the expansion scheme.

Permanent pucca housing has been provided to the mine staff as staff

quarters and will be modified according to the requirement during the

expansion project.

1.4 ENVIRONMENTAL IMPACT ASSESSMENT STUDY

As part of Environmental Impact Assessment study, baseline

environmental monitoring was carried out for Summer season of 2008

covering the months of March 08 - May 08.

Summary of baseline studies

The predominant wind directions during the season were from SSE to

WSW sector accounting to 72.58 % of the time with calm winds of less

than 1.0 kmph for 3.75 % of the time.

Ambient air quality assessed through a network of 8 ambient airquality locations was found to be well within the limits of NAAQ

standards prescribed for Residential, Rural & Other Areas.

Air Quality in the study area

S.No Pollutant Range of values NAAQS Standard

For Residential areas

Core zone

1 SPM 269 500

2 RSPM 118 150

3 SO2 13.9 120

4 NOx 16.4 120Buffer zone


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1 SPM 146-178 200

2 RSPM 52-77 100

3 SO2 13.2-15.4 80

4 NOx 14.9-18.2 80

(All the values are in g/m3)

Noise monitoring were selected in the core and buffer zones to assessthe noise levels

Noise levels recorded in the buffer zone were found to be in the rangeof 52.470.7 dB (A) during daytime and in the range of 41.8 52.4

dB (A) during nighttime.

One surface water and Six ground water samples were collected fromin and around the mine site within 10 km radius. The parameters

thus analysed were compared with IS 10500. Surface water sample

collected from Karo River showed compliance of all parameters with

the drinking water standard of IS 10500 except slightly higher

Coliform count and turbidity.

Seven samples were collected to asses the soil quality in the 10 kmstudy area of plant site and it revealed soil of medium fertile quality

A study was undertaken to list out Flora & Fauna in the study area.

The adjacent Reserve Forest and Protected Forest area are the habitatof some endangered and threatened species, which are listed in the

Schedule I and II of the Indian Wildlife (Protection) Act, 1972 as

amended in 1991. The survey recorded 9 species of Schedule I

animals of which 5 species belong to mammals, 3 species belong to

birds and 1 species to reptiles. Out of 16 species of Schedule II

animals recorded from this area, 10 species belong to mammals and 6

species belong to reptiles.

1.5 ENVIRONMENTAL IMPACTS AND MANAGEMENT PLAN

1.5.1 AIR ENVIRONMENT

The air borne particulate matter will be the main air pollutant

contributed by opencast mining.

The emissions from the mining operations and beneficiation plant are

quantified and cumulative ground level concentration for the

prevailing meteorological conditions were estimated using the

mathematical model.

Based on the process, the following are the areas identified in thebeneficiation plant which result in impact on air environment


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Predicted value superimposed on the existing baseline value gives the

overall scenario which would prevail during summer season once

mine in operation for the proposed production rate. The following

table shows the overall scenario:

OVERALL SCENARIO (SUMMER SEASON 08)

g/M3

CORE ZONE BUFFER ZONE

Baseline concentration 269 159

Predicted Concentration

(max)

200


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Silencers and mufflers are provided in the exhausts of all equipmentand drilling rigs.

Blasting is carried out only during day time and not on cloudy days.Also the noise generated due to blasting lasts only for a few seconds.

Controlled blasting is done regularly to reduce the Air over pressuredue to blasting.

The high temperature time in the afternoon is selected for blastingwhich will naturally reduce the noise pollution.

Limiting time exposure of workers to excessive noise. The workers employed are provided with protection equipment,

earmuffs and ear-plugs, as a protection from the high noise level

generated at the plant site wherever required.

Noise levels are also controlled by using optimum explosive charge,proper delay detonators and proper stemming to prevent blow out of

holes as well as usage of the sequential blasting in combination with

non electric initiation systems.

Speed of trucks entering or leaving the mine is limited to moderatespeed of 25 kmph to prevent undue noise from empty trucks.

Planting of trees is being taken up along the mining lease boundaryfor controlling noise apart from earmarking the limit of the mine pit

boundary.

1.5.3 WATER ENVIRONMENT

SURFACE WATER BODIES & CONTROL MEASURES

The area falls within the watershed area of the Karo River, which flows

in the NW to SE direction and situated about 6.8 km at NW of the

lease. Two Nalas flows near Tonto village originating from springs of

the hills of the Siddhamath Reserve forest and a dry seasonal nala

passes through the lease area and join the major nala before it meets

the Karo River.

The mine is well above the ground water table and in none of the

quarries water table has been intercepted. In the surrounding plains,

the depth of water table varies from 15 to 30 meter.

For pollution control measure a check dam has been made at the

western side of the North pit to protect the onrush material. A long

boulder wall of 75-meter length with a base thickness of 3-meter and

1-meter height has been constructed up to 2008-09. During the year


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2009 a proposal has been made by the management to construct the

check dam having length 232 meters

To understand the direct impact of mine runoff into the adjacent Nala

during monsoon water sample is being collected from the nala flows

adjacent to the mine lease area at the down stream.

In addition, EMIL proposes to take-up the following measures in

future course of mining to prevent the adverse impacts on Karo river.

Dumps have been terraced. EMIL proposes to provide garlanddrain all around the terraces following the down slope to ultimately

join the main garland drain to avoid gulleys & furrow formation.

EMIL will construct gully plugs all along the flow path of seasonalstream in the mine area joining Karo Nala.

All the static dumps in the working pit area have been stabilizedand reclaimed.

In order to control erosion from the dump yards and stack yardslocated on the surface, EMIL propose to provide garland drains

with silt traps al around the dump yards . Boulder fencing will be

provided around the dump

GROUND WATER TABLE& CONTROL MEASURES

The ultimate depth of mining that the water table is occurring at adepth of 432 m RL where as the mining is getting terminated at 383 m

RL which indicates that pit will encounter with water table. Keeping in

view of the interception of the ground water ground from 424 m RL

onwards, a detailed hydrogeological study has been carriedout. EMIL

will obtain permissions from CGWA, New Delhi for mining below the

water table level of 432 m.

WATER CONSUMPTION AND WASTEWATER GENERATION

EMIL is presently using about 118 m3/day of water for miningoperations including domestic use. The additional water requirement

due to increase of iron ore production and proposed beneficiation

plant is about 3882 m3/day. Thus the total water consumption in the

mine after expansion will be about 4000 m3/day.

WASTEWATER GENERATION

The wastewater generation from the above consumption is mainly

from the following two areas:

Workshop wastewater - 5 m3/day


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Domestic wastewater - 82.4 m3/day

WASTE WATER MANAGEMENT AT MINES SITE

Open cast mining of the iron ore will not generate any waste water.However, small quantities of domestic waste water and workshop

wastewater will be released from the mines site and the following

management plan is envisaged.

A total of 5 m3/day of wastewater is envisaged from workshop. This wastewater contains about 20 ppm of oil and grease is being

subjected to oil removal and the treated wastewater will be used for

green belt development. The existing wastewater treatment

capacities are adequate to handle the additional wastewater.

Sewage generated i.e 82.4 m3/day from the colony is treated in theseptic tanks provided at respective residential buildings

1.5.4 LAND ENVIRONMENT

IMPACT ON LAND USE AND RECLAMATION MEASURES

Open cast mining activities may alter the landscape of the lease area

and also some disturbance to the surface features of the surrounding

areas.

EMILs Kasia iron and dolomite mines are located in an area of

194.196 ha. EMIL has explored only 41 % of the mining lease area.

The mine will be fully explored after obtaining necessary permissions.

The iron ore deposition confines to hill ridges and plateaus. Balance

area is being utilized for dumping, statutory buildings, greenbelt etc.

After winning the ore during the course of mining in different quarries,

part of the worked out area will be back filled and reclaimed &

afforested.

RECLAMATION PLAN AND POST MINING LANDUSE

Reclamation will be taken up in the broken up mineralized exhausted

area as per reclamation schedule. This area will be back filled by

waste material in a phased manner. Floor area will be fulfilled

partially. Sweet soil to be spread throughout waste filled area along

with fertilizer. The mentioned process should be completed before

start of monsoon. Pit digging should be started at shallow depth.

Choice of sapling should be such that canopies area should be more.

Species wise plantation should be done canap area so that it shouldgive a soothing picture. Seedling of teak, Karanj, Chakunda, for good


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flavor, fruit bearing trees like strawberry, Mango, Guava can be

planted. Similarly Asan & Neem as medical & local Species Like

Piasal, Mahul can be planted. It should be faced & maintenance to be

done.

The ore body is persisting to a depth of 90 m from the present surfacelevel. After winning the ore during the course of mining in different

quarries, part of the worked out area will be back filled and reclaimed

& afforested. The following table shows the post mining land use

pattern of the mine area

POST MINING LANDUSE PATTERN OF THE MINE AREA

S.No. Land-use Category Area (Ha)

1 External waste dumps (total dump area will be covered

by plantation

11.216

2 Excavation area Backfilling area with plantation 52.81(+4.895ha of tailingpond area)

Water reservoir area 44.183

3 Mines Road to be used for avenue plantation 6.891

4 Built up area (Beneficiation Plant, Township & Magazine) 12.539

5 Tailing Pond Excavation 9.913

6 Storing of Minerals (Plantation on vacant area at the endof life of mine)

13.932

7 Area under Safety Zone including reclaimed &Afforestation.

37.720

8 Undisturbed tenant area 3.410

9 Area for Public Use 1.582

Total

IMPACT ON FOREST & CONSERVATION PLAN

South west part of the leasehold occupied by Siddhamath reserve

forest.

The project sites for iron ore mine covers an area of about 194 ha with

uneven terrain. Under the mine lease area undisturbed forestland is173.039 ha. (103.148 ha RF and 69.891 ha. VF) and non-forestland is

21.157 ha.

The compensatory afforestation plan would be implemented by the

Forest Department and the Essel mining management will review the

progress of implementation of the envisaged tree planting activities at

the site demarcated for the purpose.

Of the total forest land of 173.039 ha, 145.130 ha will be utilized for

mining and allied activities.


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The following reserve forests are located within 10km radius of the

study area

Forest DistanceSidhamath Reserve Forest Part of the Reserve Forest is within Mining

Lease area.

Thakurani Reserve Forest 2.0 km from Eastern Boundary of the ML Area

Baitarani Reserve Forest 5.5 Km from the southEast corner of the ML

area

Karo Reserve Forest 5.0 km North boundary of ML area

Uliburu Reserve Forest 7.0 km from the North Boundary of ML area

Karampada Reserve Forest 10.0 km from western Boundary of ML Area.

FOREST CONSERVATION PLAN

The total cost of the plan is estimated to be Rs.170.00 Lakhs out of

which Rs.91.00 Lakhs shall be placed with DFO, Keonjhar for taking

up activities within the ZoI and the rest Rs.79.00 Lakhs shall be

utilized by M/s.ESSELMining & Industries the lease area.

SOLID WASTE MANAGEMENT

TOP SOIL MANAGEMENT

Insignificant quantity of topsoil and sub soil occurred in lateritic zone

will be generated during the plan period. The topsoil and sub soil will

be recovered and stacked in a predetermined place and used for land

reclamation as well as plantation.

WASTE MANAGEMENT

Conceptual generation (for the life of the mine) of waste including

overburden and inter-burden in the mine is around 35.06 million

tonnes. Part of the waste will be disposed to dumps and balance will

be backfilled.

Waste rock will be loaded into trucks for transportation to the waste

dumps earmarked over an area 16.291 (both existing and proposed

area) hectares.

At the end of each shift the spillage left over on the dump is cleared by

a front-end loader.

OB generated will be dumped in the demarcated area located insidethe leasehold. Both retaining wall and garland drain will be


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constructed around the dumping yard to check wash off and gully

erosion. A series of settling pond will be provided adjacent to garland

drain from where clean water will be discharged outside the lease. The

dump height will be maintained at 10 meters with terraces and

ultimate dump slope angle will be maintained at 28o. Stage wisedumping will be carried out. Terraces and berms will be maintained.

Spreading of topsoil with compost on the terraces after completion.

Afterward plantation will be carried out on the terraces and berms of

the dump. Dump stabilization and solid waste wash off protection has

been initiated on the part of the active dump. This part of north block

and south block has been covered with geo textile (nearly 1.88

hectares). Check dam and garland drains with settling pond have been

constructed around the dumping area to prevent direct flow of runoff.

BENEFICATIONTAILING GENERATION AND MANAGEMENT

About 0.462 MTPA of slurry will be discharged to tailing pond. Out of

0.462 MTPA, about 0.231 MTPA of tailings will be retained in the

tailing pond. Capacity of the tailing ponds (total) is about 2.0 million

tonnes. Therefore the life of tailing pond will be more than 8-9 years

Tailing pond will be constructedwithin leasehold covering an area of

9.913 hectare (exhausted dolomite pit). The process includes wet

method of beneficiation tailings leave the treatment plant as slurry

(tailing mixed with water).

Before the tailings are hydraulically transported to tailing pond for

impoundment, the water is recovered for recycling by a dewatering

process utilizing thickener. The tailing feed to the thickener is very

fine. Coagulant and coagulant aids are used to get clarified water of a

relatively better quality for circulation.

The tailings from the thickener underflow will be pumped to tailings

dam through pipeline. The approximate distance between thebeneficiation plant and the tailings dam is about 0.9 KM.

1.7 SOCIAL WELFARE MEASURES

BUDGET FOR SOCIAL WELFARE MEASURES

EMIL has spent about Rs 85 lakhs for implementing the various

social welfare measures during the year 2008-09. EMIL has proposed

to spent Rs 114.43 Lakhs for the year 2009-10 for implementing the

various measures like Electrification of Kasia Village, Drinking water

project for Tanto at Jhargoan,Bhusgoan, Kasia village, Ten seated sulabhtoilet & bath complex at Tanto, Barbil Municipality , School Boundary Wall


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at Jhargaon village, Social Devt Projects (Health,Education Sustainable

livelihood, social cause at Kasia Ka, Kasia Kha ,Tanto, Bhusgaon, Jhargaon

villages , Village road side drain at Kasia Ka village, Deepening of Pond at

Kasia Ka, Double Storied school building at Bhusgaon and School Bus

Service at Kasia Ka & Kha villages.

1.8 POST PROJECT MONITORING

EMIL will incur a amount of Rs. 184 Lakhs for implementing the

environmental management plan for the expansion of the mine.

Documents

Kasia Iron Dolomite Mines (English)