PRE- FEASIBILITY REPORT

TABLE OF CONTENTS

Sr.No. Content Page No.

1.0 Executive Summary 22

2.0 Introduction of Project and Background Information 23

2.1 Identification of project & Project proponent 23

2.2 Copy of mining lease / letter of intent 23

2.3 Nature of the project 24

2.4 Need for the project 24

2.4.1 Importance to the Country & Region 26

2.5 Demand supply Gap 29

2.6 Imports v/s Indigenous Production 29

2.7 Export Possibility 29

2.8 Domestic / Export Markets 29

2.9 Employment Generation 30

3.0 Project Description 30

3.1 Type of the Project 30

3.2 Location 30

3.3 Size & Magnitude of Operation 31

3.4 Project Description 32

3.4.1 Process Description & Flow Diagram 32

3.4.2 Raw Materials 33

3.5 Water Requirement & Distribution 33

3.6 Waste generation 34

3.7 Resource Optimization / Recycling & Reuse Envisaged In

Project, If Any

35

3.8 Power & Fuel requirement 36

3.9 Purpose of EIA 37

4.0 Site Analysis 38

4.1 Connectivity 38

4.2 Land form, land use and land ownership 38

4.3 Topography 38

4.4 Existing Landuse pattern 39

4.5 Existing Infrastructure 40

4.6 Soil / rock classification 40

4.7 Climatic Details 43

4.8 Social Infrastructure 43

5.0 Planning Brief 44

5.1 Planning Concept 44

5.2 Man Power Requirement 44

5.3 Land use Planning 44

5.4 Facilities provided 45

5.4.1 Infrastructure 45

5.4.2 Green Belt Development 45

5.4.3 Health & safety System 45

5.4.4 Disaster Management and risk assessment 46

6.0 Proposed Infrastructure 46

7.0 Rehabilitation & Resettlement 47

8.0 Project Schedule 47

8.1 Proposed schedule and approval for implementation 47

8.2 Project Cost Estimation 47

8.3 Economic Viability 48

9.0 Analysis of Proposal 48

1. EXECUTIVE SUMMARY

Particulars Details

Location New Umrangshu Limestone Area,

Near Village – New Umrangshu, Taluka- Umrangshu,

Distt – Dima Hasao (N.C. Hills), Assam

Latitude 25°31’17.27” to 25°32’40.56” N

Longitude 92°47’54.36” to 92°47’26.39” E

Toposheet No. 83C/NE & 83C/14

Total Mine Lease area 200.0 ha

Mineable Reserves 84.35 MT

Capacity Proposed production – 4,44,500 TPA (ROM)

Life of Mine 188 years

Estimated project cost 260 Lac

EMP Cost 7.5 Lac / annum

Power Requirement NA

Fuel Requirement 1700 lits. /day

DG Set NA

Highest and Lowest Elevation

S. No. Particulars Elevation

(MSL)

1. Highest 445

2. Lowest 315

Land use Non Govt Barren Land

Nearest habitation/ town Umrangshu

Nearest Airport Borjhar (264 km)

Nearest Highway NH -27 and SH 7

Nearest Railway Station Lanka (62 km)

Power supply Umrangshu

Nearest Telephone Umrangshu

Nearest Dispensary and Govt.

Hospital

Umrangshu

Educational facility Umrangshu

Water demand and supply 12 KLD

Nearest tourist places None within the study area

Defense installations None within the study area

Archeological Features None within the study area

Ecological sensitive zones None within the study area

Nearest streams/ rivers/ water

bodies (from mine boundary)

Kopili River – 7.0 km in NW,

Langlai River – 8.0 km in SE,

Langyen River – 3.5 km E,

Mangla River – 8.1 km in NE,

Umrang Dam – 6.7 km in SW.

Seismic zone Seismic zone-V

2. INTRODUCTION OF PROJECT /BACKGROUND INFORMATION

2.1 Identification of the Project and Project Proponent

The Assam Mineral Development Corporation Limited (AMDC) is public limited

company wholly owned by Govt. of Assam. The company was incorporated on 19th

May 1983 under Companies Act 1956. (Certificate of Incorporation of the Company

is attached as Annexure No. 1) having the following aspects:

1. M/s Assam Mineral Development Corporation Limited is planning to excavate

limestone ore.

2. The unit is coming up in New Umrangshu area of Dist. - Dima Hasao (North

Cachar Hills) of Assam state.

3. The mining process to be adopted by M/s Assam Mineral Development

Corporation Ltd will simply be mechanized open cast mining with the use of

Excavator for loading of blasted rock

4. The mineral Limestone which will be excavated at the mine holds good market

in cement industry in India.

5. The promoters of the lease mine are well educated and highly experienced.

2.2 Copy of mining lease/ letter of intent

The AMDC was granted mining lease over an area of 33 hectares for mineral

limestone in the New Umrangshu area, District N.C.Hills, Assam vide letter no.

PEM/22/84/34 dated 21.09.1985, for a period of 20 years. Mining lease was executed

on 30.09.1988 for a period of 20 years. (Refer Annexure No. VI: Copy of Lease

Grant order of 33 ha. Area & Annexure No. VII: Copy of Lease Deed of 33 hect.

area.).

The company was granted another lease over an area of 167 hectares in the adjacent

area in New Umrangshu area vide letter no. PEM/22/84/228 dated 17.06.1992.

Refer Annexure No. VIII: Copy of Lease Grant order of 167 ha. area.

AMDC, applied for renewal of mining lease, on 22.07.2008 in Form J for both the

leases along with request for amalgamation of both the leases. Govt. of Assam

approved the amalgamation of both the leases vide their letter no.

PEM.22/84/Pt.I/11 dated 05.05.2010. Refer Annexure No. X: Copy of Approval

Letter for Amalgamation of leases.

Approval of mining plan along with progressive mine closure plan in respect of

Limestone deposit of M/s Assam Mineral Development corporation Ltd. Over an area

of 200 Ha N/v-Umarngshu in Dima Hasao (N. C. Hills) district of Assam State,

submitted under rules 16(1) of MCR 2016 & 23 (B) of MCDR 1988, vide letter No-

IBM/GHY/AS/DH/LST/MP-78 on dated 01/12/2016.

Refer approval letter of mining plan is attached as Annexure No-XII

The company has applied for Environment Clearance and TOR has been issued by

MoEF, New Delhi vide letter No. J-110015/443/2012-IA.II(M) dtd. 06.12.2013. (Copy

of TOR letter attached as Annexure No. I). Tor has been expiring due to get approved

mining plan. So we have again applied for fresh ToR.

2.3 Nature of the Project

M/s Assam Mineral Development Corporation Limited proposes to renew the

lease area for Limestone mine at Umrangshu area of Dima Hasao (North Cachar

Hills) District, Assam.

2.4 Need for the project

Limestone is an important mineral which is used in the manufacture of cement, as

flux in iron and steel production, and as raw materials for chemical industries. There

are now several cement factories which have come up in Assam due to the availability

of high quality limestone in the region.

2.4.1 Importance to the Country and Region

Limestone deposits of Assam are located in Karbi Anglong and North Cachar Hills

districts. Many limestone beds are interblended with coal-bearing sandstones. The

important areas with excessive limestone eposite in the districts are-Umrangshu in

North Cachar Hills district, Koilajan and Dillai Parbat in Karbi Anglong district.

Limestone (CaCO3) is associated with rocks composed of either calcium carbonate,

carbonate of calcium and magnesium, or mixtures of the two. If magnesium is

present up to 20 per cent it is called magnesium limestone and if it is above 20 per

cent it is known as dolomite limestone. Limestone deposits are of sedimentary

origin and occur in almost all geological formations of the country except

Gondwanas.

Limestone is mainly consumed in cement industry (76%), iron and steel industry

(16%), chemicals (4%), sugar, paper, fertilizer, and ferro-manganese industries

(4%).

The total recoverable reserves of limestone of all categories and grades are placed at

75,679 million tones. The total conditional reserves have been estimated at 701

million tones.

Regional Distribution

More than two-third of India's production of limestone comes from five states of

Madhya Pradesh, Rajasthan, Andhra Pradesh, Gujarat and Chhattisgarh each of

which contribute more than 9 per cent of the country's output of the mineral.

Karnataka, Tamil Nadu, Maharashtra and Himachal Pradesh (each producing over 5

per cent of the country's limestone) account for another 28 per cent of the country's

production of limestone.

Madhya Pradesh-Chhattisgarh-M P. and Chhattisgarh with estimated reserves at

2,126 million tones contribute 26 per cent of the total limestone production of the

country. Here extensive deposits of limestone occur at Katna and Jukehi Keymore

(Jabalpur district), Alaktara (Bilaspur district), Tikaria and Narsinghgarh (Damoh

district) and between Baijnath and Madhupur.(Rewa district) and near Maihar and

Satna areas (Satna district). Deposits of limestone also occur in Rajgarh, Raipur,

Durg, Bastar. Dhar, Betul and Sagar districts.

Andhra Pradesh-Andhra Pradesh, accounting for 15.99 per cent of the total

limestone production in the country, is the third largest producer of limestone in

India. Here important deposits are con- lined to Narji stage of Kurnool system. Main

producers are Vishakhapatnam, Krishna, Guntur, Karimnagar, Kurnool, Nalgonda,

Adilabad, Warangal and Mahbubnagar districts.

Rajasthan-Rajasthan occupies second place (16.23%) amongst the limestone

producing states of the country. Here cement grade limestone is obtained from

Ajmer, Banswara, Bikaner, Dungarpur, Jodhpur, Kota, Sirohi, Tonk, Bundi, Alwar,

Sawai Madhopur, Chittaurgarh, Nagaur, Pali, Jhunjhunu and Udaipur districts.

Gujarat-In Gujarat good quality of limestone is found near Pasuval, Diwania and

Khunia in Palanpur taluka of Banaskantha district; near Dari, Veraval, Savni,

Patan/Grokhundi, Sutrapara and Warodra in Junagarh district; near Posina in

Sabarkantha district; near Balasinar in Kheda district; and near Lanawada in

Panchmahals district.

Karnataka-Karnataka accounts for 10 per cent of the reserves and 8.37% of the

total production of limestone in the country. Here limestone deposits are scattered

in Bijapur, Belgaum, Shimoga and Gulbarga districts.

Tamil Nadu-In Tamil Nadu large reserves of limestones are found in

Ramnathapuram, Tirunelveli, Tiruchchirappalli, Salem, Coimbatore, Madurai and

Thanjavur districts. Except from Salem district much of the deposit is of cement

grade limestone.

Others-Other important producers are : Maharashtra-Yavatmal, Chandrapur,

Nanded, Ahmadnagar districts; Himachal Pradesh-Bilaspur Kangra and Chamba

districts; Orissa-Sundargarh (Birmitrapur, Hathibari, Purnapani, Katopuryheria,

Pagposh and Amghat),Sambalpur (near Malkanagiri), and Kalahandi (near

Rostamar, Bomok, Kinerbela and Parkela) districts; Bihar-Shahabad (Baujari-

Rohtas, Baulia-Chunhata-Dhananti and Birki-Chapla areas)district; Jharkhand-

Palamau, Hazaribag, Ranchi and Singhbhum districts; Uttar Pradesh-Mirzapur, Sone-

bhadra, Lucknow and Unnao districts; Uttaranchal; Assam-Nagaon and Sibsagar

districts; Meghalaya-Garo, Khasi and Jaintia hills districts; Haryana-Mahenderagarh

and Ambala districts; Jammu and Kashmir-Anantanag and Jammu districts; West

Bengal-Darjeeling and Jalpaiguri districts; and Punjab-Hoshiarpur district.

The project will provide much needed raw material for infrastructural industries in

the region. It will also generate revenue in terms of royalty, taxes etc. to the state. It

will also bridge the gap between demand and supply of raw material to the

consumers. The project will help in the overall growth of the region and surely

generate employment for local people.

2.5 DEMAND-SUPPLY GAP

The demand for cement mainly depends on the level of development and the rate of

growth of the economy. There are no close substitutes for cement and hence the

demand for cement is price inelastic.

With a goal of speed up the sustaining growth in the cement industry the

government has taken a range of steps in the Union budget 2011-12. The

infrastructure sector has received a momentum in the form of improved funds and

tax related incentives offered to magnetize investors for tapping the infrastructure

opportunities across the country. Introduction of tax free bonds, formation of

infrastructure debt funds and formulating a comprehensive policy for developing

public private partnership projects (PPPs) are some of the steps that will provide

required stimulus for growth of the cement industry in India.

2.6 IMPORTS VS. INDIGENOUS PRODUCTION

There will be no import for the project. There will be indigenous inputs in the entire

mining activity.

2.7 EXPORT POSSIBILITY

The mining activity is not prospecting exports.

2.8 DOMESTIC/EXPORT MARKETS

2.8.1 DOMESTIC MARKET

The demand for Limestone for cement making has been increasing every day. The

mine project aims to cater the raw material requirement of the nearby areas cement

plant.

2.8.2 EXPORT MARKET

All Limestone will be used for the captive purpose.

2.9 Employment Generation (Direct or Indirect due to the project)

Project will create direct & indirect employment opportunities within the

surrounding region. Unit will use good faith efforts to employ local people

from the nearby villages depending upon the availability of skilled & un-

skilled man-power surrounding the project site.

In operation phase, the proposed project would require significant workforce of

non-technical and technical persons. Migration of highly educated and skilled

person will result in increase of literacy in the surrounding villages.

In addition, the proposed project shall enhance the prospects of employment.

3.0 PROJECT DESCRIPTION

3.1 Type of Project

The proposed project is mining unit of Limestone ore. It is a mining project which

will be developed in Dima Hasao (NC Hills) district of Assam.

3.2 Location

M/s Assam Mineral Development Corporation Limited proposes to set up

Limestone Mine near village New Umrangshu, Dist. Dima Hasao (NC Hills), Assam.

Google map is shown in Figure - 1.1.

→ Mine Site

The lease area forms a part of Survey of India topo-sheet no. 83C/NE & 83C/14 lying

the co-ordinates Latitudes 25°31’17.27” to 25°32’40.56” N & Longitudes 92°47’54.36”

to 92°47’26.39” E. The deposit can be approached by an all weathered road from

Guwahati via Nangaon, Doboka and Lanka, covering 254 km. except for last 40 km.

which passes through hilly terrain, the road is on flat country. The deposit is 140

km. by road from Shillong via Jowai. Umrongshu is connected with Halflong, the

district H.Q. of N. C. hills, by an all-weather road of 109 km. The nearest railway

station is Lanka 62 km. is on meter gauge section of the N.F. railway. The nearest

civilian airport Borjhar is at a distance of 264 km.

3.3 Size/Magnitude of Operation

M/s Assam Mineral Development Corporation Limited proposes to produce

Limestone @ 4, 44,500 TPA (ROM) in the plot area of 200.0 hectares.

3.4 Project Description

3.4.1 Process Description & Flow Diagrams

The mineral produced here will be sold to nearby industries or buyers. It is

proposed to produce 4,44,568 tonnes of ROM per year.

The area is located in hilly terrain and involves development of access road and

removal of overburden. Being new project ancillary facilities are also required to be

developed.

It is proposed to work the deposit by mechanized open cast method of mining with

the use of excavator for loading of overburden. Following broad design parameters

have been considered.

Bench height of 6.0 m will be developed.

Minimum bench width will be 18-25 m.

Individual bench slope will be 80o from vertical.

100-115 mm dia blast holes using wagon drill.

Excavator of bucket capacity 0.93 cu.m. will be used.

For ore and waste 15 tons tippers are proposed to be used.

Haul roads will be developed at minimum gradient of 1:16.

ANFO with cap sensitive explosive will be used.

Secondary blasting will be carried out as and when required.

Water sprinkler will be used for dust suppression in the mine.

Provisions of MMR 1961 will strictly be adhered.

As per the present scenario the mining will be done mechanically. Mining will be

mechanized opencast mining by forming benches of 6.0 m height. 100-115 mm dia.

holes will be drilled and blasted using ANFO & slurry explosive. Loading of

limestone into trucks will be with the use of excavator. Individual bench slope will

be 80o. At the end of mining plan period about 26.040 hect. area will be covered

under mining, 6.200 ha under waste dump, 1.510 ha under approach road, 15.180

ha. under plantation and 1.500 ha under infrastructure development. On the above

techno-economic as well as environmental consideration, the conceptual mining

plan has been drawn keeping 45° ultimate pit slope angle.

FLOW CHART

MINING OF LIMESTONE ORE

3.4.2 Raw materials

Sr No Raw Material Quantity

1 Explosive 400kg/day

2 Fuel (HSD) 1700 lits. /day

ROM (Run of Mines)

Sorting Waste to

waste dump

Limestone stack Sold to other

buyers

Sold to other Industries

3.5 Water Requirement & Distribution

Umrongshu and neighbouring areas lie in the western extremity of N.C. hills district

and are bordered on west by the Kopili river. The region constitutes the eastern

flank of the Shillong plateau. The drainage system of the area is controlled by river

Kopili that flows in an east – west direction. Streams like Largen, cut across the main

deposit forming ravines.

The Amrang Nalla cuts across the lease area and flows west to east. Very little water

remains in the nalla during eight months period of the year, however the nalla

remains very active during monsoon.

There is no permanent water body or any perennial stream located in the

area/proposed working site. The surface accumulated water body in the area is out

of question, as the sub-surface formation is porous, which allows water to percolate

fast into sub-surface making area dry very soon.

The water requirement for the proposed project will be met from the Dug wells /

Tube wells situated outside the lease area. The daily water requirement is about 12

KLD. Details are shown in table below:

Sr. No. Purpose Total Requirement (KLD)

1 Dust suppression 5.5

2 Drinking 2.0

3 Green belt 4.5

TOTAL 12.0

3.6 Waste Generation

The deposit is exposed on the surface and stratified. The Kopili formation forms

upper most unit of the Jaintia Group and is composed of alternation of gray to

brown splintery shale and yellowish brown sandstone with loose nodules of

ferruginous sandstone. The overburden consists of shale and sandstone.

The year-wise accretions of overburden are given below:

Year Waste Limestone (ROM) Stripping Ratio Cu.m. Cu.m. Tones Waste: Mineral

Cu.m. Cu.m. First 237,152 127,282 330,932 0.86:1

Second 215,450 145,260 377,675 0.48:1

Third 262,510 162,600 422,760 0.61:1

Fourth 277,402 171,012 444,631 0.62:1

Fifth 266,470 170,990 444,574 0.56:1

Total 1,258,984 777,144 2,020,572

3.7 RESOURCE OPTIMIZATION/RECYCLING AND REUSE ENVISAGED IN THE

PROJECT, IFANY, SHOULD BE BRIEFLY OUTLINED

3.7.1 RESOURCE OPTIMIZATION

Resource optimization has been done quality wise and quantity wise. The geological

cross-sections along section lines 200N to 1800N have been utilized for calculating

the resources in the Measured Mineral Resources category (UNFC 331). The

resources from the remaining area have been assessed on the basis of average

thickness of limestone in the measured category. Remaining resources are classified

under UNFC code 332.

CATEGORY CODE Quantity

Total

Resources

(A+B) 296.895

Reserves (A) Proved (111)

Probable (121)

(122) 84.354

Remaining

Resources (B)

Feasibility Mineral resources (211)

Pre-Feasibility Mineral resources (221)

(222) 10.974

Remaining Measured Mineral Resources (331)

Remaining Indicated Mineral Resources (332)

Inferred Mineral Resources (333) 201.566

Reconnaissance Mineral Resources (334)

Life of Mine;

Mineable Reserves 84.35 million tonnes

Proposed to be mined in MP Period 2.02 million tonnes

Future rate of production 0.45 million tonnes

Remaining Reserves at the end of Plan

Period

82.33 million tonnes

Mine Life after Plan Period 82.33/0.45 = 183 years

Total mine life 183+5 = 188 year 188 years

Summary of Grade:

CaO MgO Fe2O3 Al2O3 SiO2

Limestone 48.02 1.31 2.90 3.01 5.38

3.7.2 PIT OPTIMIZATION

To optimize the excavation of Limestone overall mining limit for the conceptual

mining plan has been fixed at 304 mRL. Based on the present mineable reserve and

conceptual mining plan of the area is prepared, refer plate no. 5.

On the above techno-economic as well as environmental consideration, the

conceptual mining plan has been drawn keeping 45° ultimate pit slope angle. A

7.5 m barrier will be left all along the mining lease boundary. No barrier will be left

along the common lease boundary of other adjacent area of the lessee.

On the basis of Ultimate pit design, Total Minable reserve is established as

121,640,000 tonnes that gives the life of mine 269 years with rated production of

4,44,500 tons per annum (ROM) from sixth year onwards.

3.8 Power and Fuel Requirement

No electricity will be required. Fuel (HSD) will be obtained from authorized public

fuel station & about 1700 lits. /day H.S.D. will be used in machineries during mining.

Mostly mobile equipment’s, so their expected emission will be very less and will

have less impact.

3.9 Purpose of EIA

4 SITE ANALYSIS

4.1 Connectivity

4.2 Land form, land use and land ownership

The lease area is undulating and hilly. Agriculture is the main stay of the tribal

population of the districts. The traditional method of cultivation is the slash & burn

one, commonly known as Jhuming. Whole land in the lease area is Non-Govt. barren

land. Neither, National Park, Archeological monument, etc. or other private land is

within the lease area or in nearby area.

The overall literacy rate in the village of buffer zone area is approximately 24%

while that in Umrangshu town is about 50%. Population of the district is 9131.

There is no habitat with in the core zone. In buffer zone of the study area main

workers are 40.43% and marginal workers are 4.72% resulting into 54.85% non-

workers indicating at chronic unemployment problem. The occupational pattern of

the people is approximately as under Mining - 10%, Trade - 12%, Agriculture - 1% &

Industry - 77%.

Sr.No. Particulars Details

1 Nearest Highway SH - 7 (1.7 km SW) & NH - 27

2 Nearest Railway Station Lanka (62 km)

3 Nearest Airport Borjhar (264 km)

4.3 Topography

The limestone belt of the Kopili valley area constitutes the south eastern flank of the

Shillong plateau and comprises of small flat topped hillocks with elevation varying

from 580 m to about 840 m above mean sea level (MSL). The highest altitude

(837.29 m) in the region has been observed at Khandong, about 12 Km west of New

Umrangshu. The proposed lease area is part of N, NW – S, SE trending ridge in the

hilly terrain of the region.

In the New Umrangshu area the highest altitude of about 445 MSL is located in the

extreme Northeastern part while the lowest altitude of about 360 m is present in the

valley of Amrang nalla flowing west to east in the central part of the area.

The Amrang nalla flows through the central part of the lease area, dividing the area

into two separate zones. The Amrang nalla with its tributaries constituted the

geomorphological disposition of the local terrain.

The drainage of the area is collected through many nallahs discharging in the

Amrang nalla and Langyen nalla. Both side these nalas join in the south eastern side

of the area, near the Langyen basti and flows in a south eastern direction with the

name of langyen nalla, which ultimated flows in the Kopili River. The local nalas

generally carry meager drainage during dry season. While in rainy season their

water level may rise considerable from the bottom for short period of heavy rains.

The Amrang nalla being typical hilly terrain drainage cuts through the high ground

creating gorges.

The master drainage of the region is thus controlled by the Kopili River. Near

Garampani the Kopili river system had been harnessed to create a multipurpose

hydel power project, which generated 150 MW power. Kopili reservoir is the source

of water for agriculture and industrial area.

4.4 Existing Land use Pattern

The lease area is a Non-Govt. Barren land. There is no reserves forest or protected

forest land within the lease area. There is no village or hutments within the lease

area. Existing land use pattern is given as below:-

Table 4.1 Land Use/ Land cover details of study area

Particular Forest

land

Agriculture

land

Grazing

land

Waste

land

Total

Pit/Quarries -- -- -- 6.390 6.390

Waste dump -- -- -- 3.190 3.190

Road &

Building

-- -- -- 2.138 2.138

Plantation -- -- -- 5.180 5.180

Ag. land -- -- -- 0.0 0.0

Mineral stack -- -- -- 0.0 0.0

Remaining

land

-- -- -- 183.102 183.102

Total -- -- -- 200.0 200.0

4.5 Existing Infrastructure

Site services as per Mines Rules 1956 are available in the area. An explosive

magazine and ANFO mixing shed is also in operation in the area. First Aid station,

Toilets as per the provisions of Mines Rules shall be continued to be maintained.

Regular medical checkup of the mine employees will be carried out as per the

provisions of Mines Rules 1956.

4.6 Soil / rock classification

The hill slopes of the zone have red loamy soils and old alluvial soils cover the plains

of North Cachar Hills. The soils are categorized into ferruginous and laterised red

soils which are red to reddish brown/deep reddish brown in color. Due to varying

altitudes and location of hill valleys, temperature remains high during summer and

mild in winter.

4.6.1 Description of the rocks units within the lease area:

The Geological succession of the area is given below:

Table 4.2

LOCAL STRATIGRAPHIC SEQUENCE

Group Formation Lithological units Thickness

Jain

tia

( E

oce

ne

)

Kopili Shale &

Sandstone

Shale & sandstone 0-8 m

Sylhet Limestone

Formation

Top Band limestone 28 – 29 m

Bottom Band limestone 50-52 m

Basal sandstone Sandstone with carbonaceous shale Not Known

Basal Sandstone: The Basal sandstone formation lying unconformably over the

pre-cambrian is mainly made up of whitish to pale brown sandstone, medium to fine

grained, slightly quartzitic with occasional presence of carbonaceous shales and thin

coal seams. It makes its presence along Amrang nala.

Bottom Band limestone: Immediately above the Basal sandstone lies the bottom

band limestone. The contact is a gradual one. This band was encountered in all three

boreholes. It has an average thickness of about 50 m based on physical, chemical

and lithological characters; this band can be classified in to three recognizable sub

horizons as stated below:

(a) Top dirty gray to gray limestone with shale intercalation

(b) Middle gray to high gray massive and compact limestone.

(c) Lower gray limestone with sandy limestone band

The lower unit tends to become arenaceous towards bottom. In fact, the contact

with Basal sandstone formation is more or less gradational. Thickness of sub –

horizons varies from 6 to 8 m.

Thickness of middle unit varies from 20 to 28 m. Limestone of this horizon contains

comparatively higher CaO with lesser Fe2O3, Al2O3 and SiO2. The topmost horizon of

limestone unit is gray in color. It shows comparatively lower CaO content and higher

Fe2O3 and Al2O3 compared to underlying unit. The thickness of this unit varies from

20 to 25 m.

Intermediate shale: The top band and bottom band limestone are separated by a

thin but persistent shale band, thickness of which varies from 5 to 7 m. This shale is

encountered in two boreholes (NU- 12/3) & NU 12/4). In the remaining borehole

AMD-1 it was missed as this borehole was located at a lower level than the shale

band. The shale is dark gray in color with occasional thin shally limestone band.

Top Band Limestone: The top band limestone shows an average thickness of 29 m.

This band was punched through 2 bore holes (NU12/3 & NU 12/4). It is

characterized by highly ferruginous and argillaceous carbonate with low CaO

content. On the basis of physical character and chemical composition, this unit can

be demarcated in to sub units. The lower 20 to 22 m grey to dirty grey in colour,

highly fossiliferous, comparatively less hard and less compact with frequent

presence of shally matter. The top most 8 to 10 m is reddish in colour, highly

ferruginous limestone. It is hard and compact with evenly distributed mega fossils.

Kopili Sandstone & Shale: The Kopili formation forms the upper most unit of the

Jaintia Group and is composed of alternation of gray to brown splintery shale and

yellowish brown sandstone with loose nodules of ferruginous sandstone. Thin

bands of calcareous shale and impure limestone are also seen at places. This

formation is encountered in two boreholes. The kopili formation generally occupies

the ridge top. The sandstone is medium to fine grained well sorted , whitish to

brown in colour. It is soft and sometime friable. The shale is dark gray to brownish

in colour and splintery in nature. The limestone band shows the following chemical

composition in totality:

Radicals (%) Lime Grade Cement Grade

SiO2 2.40 5.38

CaO 49.50 43.02

MgO 0.47 1.31

Al2O3 0.95 3.01

Fe2O3 1.95 2.90

4.7 Climatic Details

The climate of the district of N.C. Hills is fairly diverse climate with an average

annual precipitation of around 1500 mm to 2000 mm with average of 1673 mm and

40 to 90% relative humidity. The rainfall is mostly distributed between the months

of July and September. About 90 percent of the annual rainfall is received during the

period June to September, July and August being the rainiest months. The variation

in annual rainfall from year to year is very large. During the North-East monsoon

season, the relative humidity is generally over 90 percent. The coldest month is

January and the hottest month is May.

The micro meteorological conditions at the mine site determine the transport

diffusion pattern of air pollutants released into atmosphere. The principle variables

include horizontal connective transport (average wind speed and direction) vertical

convective transport (atmospheric stability) and topography of the area.

Based on the Meteorological data such as wind speed, wind direction, temperature,

and relative humidity from IMD station summarized as below:-

TABLE 4.3: MICRO-METEOROLOGY

SUMMER SEASON

Temperature

°C

Relative humidity

%

Wind Speed(km/hr) & Direction

8.30 Hrs. 17.30 Hrs.

Max. Min. 8.30 Hrs. 17.30 Hrs. Direction Speed Direction Speed

32.2 18.5 70 34 NE 04 SW 04

4.8 Social Infrastructure

The infrastructure that exists within the lease area is an explosive magazine and

ANFO mixing shed, toilets, first aid stations etc.

The nearest village is Umrangshu, there educational facilities are available in the

form of primary and secondary schools.

Medical facilities, Primary Health Centre are there in the area, imparting services,

for advance medical facilities. In each village one health worker has been appointed

by the Govt. to provide primary health facilities.

Village people are availing drinking water facilities generally from the Hand pump,

open well and tube well. The water supply is also supplied through tanker in few

villages. During summer scarcity of water has been noticed.

Communication services like post office and telephones are available in the nearby

village. Some of the villagers are having mobile phones.

5. PLANNING BRIEF

5.1 Planning Concept

M/s Assam Mineral Development Corporation Limited proposes the renewal of a

mining lease to produce 4,44,500 TPA (ROM) of Limestone mineral. It is situated in

Dima Hasao (NC Hills) District of Assam.

5.2 Man Power requirement:

Man power requirement for mining is estimated to be 36 Nos. Most of the

employees will be recruited from neighboring village.

5.3 Land use Planning:

Land use pattern (Hects.)

S.

No. Activity Present

At the end of

5th year

At the end of

lease period

1 Pits 6.390 26.040 90.720

2 Waste Dump 3.190 6.200 10.000

3 Road & building 2.138 3.010 4.000

4 Plantation 5.180 15.180 27.800*

5 Agriculture land 0.0 0.0 0.0

6 Mineral stack 0.0 0.0 0.0

7 Remaining Land 183.102 149.570 67.480

Total area 200.0 200.0 200.0

Note: - *Plantation along lease boundary & barren land – 27.80 ha and on the dump site –

10.0 ha.

5.4 Facilities Provided:

5.4.1 Infrastructure

The infrastructure required is office, store, and shelter for workers and these will be

provided at the mine site. For drinking, water will be brought from the well

outside the lease area & this water is potable. Most workers will be from nearby

villages so no accommodation at mine site will be required.

5.4.2 Landscaping and Green Belt Development

It is proposed to plant a total no. 4000 trees per year during five year plan period.

An effort will be made in the first three years to cover the entire green belt area

along the statutory lease barrier. By the end of lease period about 27.8 ha. area will

be covered under plantation. Year wise plantation is shown on the layout plan

(Refer plate no. 6). The total proposed area for afforestation is 10.0 hectares and

expected survival rate is 90%.

A number of species will be planted suitable to this area of climate conditions

like Neem, Sagwan, Banyan, Pilu, Baval etc. The afforested area will be encircled

by a barbed wire fence to protect it from cattle’s and regular watering thrice a

week (except monsoon) and maturing as required will be done.

YEAR’S NO. OF PLANTS AREA (IN Hect.) SURVIVAL RATE FIRST 4000 2.0

90% SECOND 4000 2.0 THIRD 4000 2.0

FOURTH 4000 2.0 FIFTH 4000 2.0

5.4.3 Health and safety System

During the opencast working, and allied activities, all the precautionary measures

shall be taken into account as per Reg. 106, 181, 182 & 183 of MMR 1961 and Rules

31, 35, 37, 38 & 39 of MCDR 1988 for safety and security.

Following Safety & security measures will be enforced;

Moving front of the quarry shall have temporary fencing.

Permanent fencing will be provided where quarry has reached the ultimate

pit limit.

Mine entrance will have a permanent check post and record shall be

maintained of all persons / vehicles entering the mine area.

Round the clock security arrangement shall be provided to prevent

inadvertent entry of persons.

5.4.4 Disaster Management and risk assessment

The mining activities will involve accident like landslides, fall of material or

equipment from benches and failure of dump retaining wall. The company will

prepare a detailed emergency plan in consultation with DGMS. During heavy rain

mining activities will be closed.

6. PROPOSED INFRASTRUCTURE

S.NO Details

1 Mining Area 200 hectares.

2 Residential Area Not Applicable

3 Connectivity Nearest Highway: Highway NH 27

Nearest Road: Umrangso road SH 7 (1.7 km

SW)

Nearest Railway Station: Lanka Railway

Station (62 km)

4 Green Belt 27.80 hectare will be reserved for green belt

development in the proposed facility.

5 Water Management 12.0 KLD Source: Dug wells / tube wells

6 Power Management N.A.

7 Waste Water Domestic Effluent treated in soak pits and

overflow used for gardening

8 Solid Waste

Management

Over burden disposed at proposed site

9 Hazardous waste

Management

N.A.

7. REHABILITATION & RESETTLEMENT PLAN

Since the project site is a Non-Govt. waste land, there is no reserves forest or

protected forest land within the lease area. There is no village or hutments within

the lease area. R&R is not applicable to this project.

8. PROJECT SCHEDULE

8.1 Proposed Schedule and Approval for Implementation

The Proposed project shall be established after getting the Environmental Clearance

from MoEF.

8.2 Project Cost Estimation

Estimated Project Cost for the proposed project is 260 lakhs.

(A) Capital investment

A site office, store & rest shelter = Rs. 5,00,000/-

Machinery & Tools = Rs 21,000,000/-

Bank Guarantee (Financial assurance) = Rs. 12,60,750/-

Approach road = Rs. 1,557,000/-

PMCP first year = Rs. 1,499,000/-

Social fund & activities = Rs. 2,00,000/-

Total cost = Rs. 26,016,750 /-(say 260 Lac.)

(B) Operational cost-

The mineral will be mined from the lease area, the cost of per ton mining will be

app. Rs. 301.11/- per tonne

8.3 Economic Viability

The anticipated cost of mining is Rs. 301.11/- per ton cost. Average sale value is

assumed at Rs. 1000/- ton of Cement. Hence the project will be viable.

9. ANALYSIS OF PROPOSAL

Project will create direct & indirect employment opportunities within the

surrounding region. Unit will use good faith efforts to employ local people from

the nearby villages depending upon the availability of skilled & un-skilled man-

power surrounding the project site.

In operation phase, the proposed project would require significant workforce of

non-technical and technical persons. Migration of highly education and skilled

experience will result in increase of literacy in the surrounding villages.

In addition, the proposed expansion of project shall enhance the prospects of

employment.

Assessment of the potential socioeconomic benefits during mining

focused primarily on work force requirements, acquisition of supplies, and the

temporary increased demand for services related to the mining project like

food, housing, communications, law enforcement, medical care, local transportation

etc. Due to these, additional revenue to local suppliers for required products and

services related to the construction and operation phases of the project will generate.

Thus, mining activities will provide numerous new, although temporary, work

opportunities for both skilled and unskilled labor, as well as contribute

significantly to the local economy.

Additional government revenue expected from royalty, taxes, duties and other fees.

An added benefit to the proposed project will result in considerable growth of

stimulating the industrial and commercial activities in the state. Small and

medium scale industries may be further developed as a consequence.

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ANNEXURES

Annexure No. I Copy Of Tor Letter

Annexure No.II Copy Of Certificate Of Incorporation Of The Company

Annexure No. III Copy Of Board Resolution In Favor Of Nominated Owner

Annexure No. IV Copy Of List Of Board Of Directors

Annexure No. V Copy Of Photo Id And Address Proof Of The Nominated Owner

Annexure No. VI Copy Of Lease Grant Order Of 33 Ha. Land

Annexure No. VII Copy Of Lease Deed For 33 Ha.

Annexure No. VIII Copy Of Lease Grant Order Of 167 Ha. Land

Annexure No. IX Copy Of Lease Deed For 167 Ha.

Annexure No. X Copy Of Approval Letter For Amalgamation Of Leases

Annexure No. XI DOC

Annexure-XII approval letter of mining plan