PRE – FEASIBILITY

REPORT

TABLE OF CONTENTS

Sr.

No.

Content Page No.

1.0 Executive Summary 29

2.0 Introduction of Project / Background Information 30

3.0 Project Description 33

4.0 Site Analysis 43

5.0 Planning Brief 50

6.0 Proposed Infrastructure 54

7.0 Rehabilitation & Resettlement Plan 55

8.0 Project Schedule 55

9.0 Analysis of Proposal 57

1. EXECUTIVE SUMMARY

Particulars Details

Project name New Umrangshu Limestone Mine

Location Village –New Umrangshu, Taluka- Umrangshu, District

–Dima Hasao, State-Assam

Latitude & Longitude Pillar Latitude Longitude

E 25030’55.90” 92046’33.30”

F 25030’55.72” 92046’50.89”

G 25031’18.40” 92046’50.80”

H 25031’18.40” 92046’32.90”

Toposheet No. 83 C/14

Total Mine Lease area 35.00 Hect.

Present Status Working

Mineable Reserves 9.65 million tonnes (MT)

Capacity Proposed production – 80,000 TPA

Life of Mine 120yrs

Ultimate pit limit 344 mRL

Estimated project cost Rs 70Lac

EMP Cost Rs 5 Lac / annum

Power Requirement NA

Fuel Requirement 600 lits./day

DG Set NA

Highest and Lowest Elevation S. No. Particulars Elevation

(AMSL)

1. Highest 520

2. Lowest 340

Land use The lease area is Unclassified Mixed Forest .

Nearest habitation/ town Umrangshu 6.5km from lease area

Nearest Airport Guwahati -254 Km ..

Nearest Highway SH -20 from pillar H -300 m

Nearest Railway Station Lanka on the NE Frontier Railway.

Power supply Umrangshu ,6.5km from lease area

Nearest Telephone Umranghsu 6.5km from lease area

Nearest Dispensary and Govt.

Hospital

Umranghsu 6.5km from lease area

Educational facility Umranghsu 6.5km from lease area

Water demand and supply 6.0 KLD, Source- water will available from nearby

village.

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 9.2 km and langklam nadi -5km from lease

area and seasonal nallas also flow and join in rivers .

Seismic zone Seismic zone -V

2.0 INTRODUCTION OF PROJECT / BACKGROUND

INFORMATION

2.1 Identification of the Project and Project Proponent:

Mining project for mineral Limestone . The project is located village - New

Umarngshu, Taluka – Umarngshu and District – Dima Hasao ( North Cachar

Hills), Assam. Lease area – 35.0 hect. Proposed production – 80,000 TPA

Project Proponent:

Name of the Lessee M/s NECEM Cements Limited .

Address Housing Colony Road,

Rukmini Nagar,

Dispur ,Guwahati,Assam

Mob./Phone no. +91(361)2263348/2261814

Status of the lessee Private Limited Company

2.2 Brief view of Project Details

M/s NECEM Cement Ltd was incorporated as a Limited Company under

Company Act 1956 and having its registered office at Housing Colony Road,

Rukmini Nagar, Dispur, Guwahati (Assam). M/s NECEM Cement Ltd. set up the

cement plant in the N-E region with capacity of 50,000 TPA (135 TPD) in year

1985.

M/s NECEM Cement Ltd, holds the mining lease for 35 hectares village New

Umarngshu in the Dima Hasao ( North Cachar Hills) District of Assam.

The mining lease was granted in favor of Shri Navneet Agarwal, for a period of

20 year. (Lease period 6/1/1986 to 5/1/2006)(Refer Annexure no.II). Later the

Govt. of Assam, vide letter no. PEM.65/84/277 Dt. 11/1/93 conveyed the

consent to the transfer the said mining lease in favor of M/s North East

Cement Ltd.,(Now NECEM Cements Ltd.) from Shri Navneet Agarwal. (Refer

Annexure no.III). The New Umarngshu Limestone Mine is under operation

since August 1987 for the captive use for the cement plant.

The mining lease area of New Umrangshu is between 5th & 7th km. post from

Umrangshu town on the SE side of the Umrangshu - Lanka Road. The area

is at a road distance of 109 Km (via Langlai) from Haflong, HQ of Dima Hasao

(Old North Cachar Hills) Dist., Assam. The Nearest rail station is at Lanka on

the NE frontier railway. Nearest Airport (254 Km) is at Guwahati. The most

widely used approach to the area is by road.

The company holds no other mining leases in the country.

The Mining Plan with PMCP under Rule 24(A) of MCR 1960 & Rule 23B(2) of

MCDR 1988 respectively was approved by RCOM, IBM, Kolkata vide letter No.

IBM/GHY/AS/DH/LST/MP-59 dated 15.12.2014 for the block period 2010-11 to

2014-15 with the mining proposal for 2013-14 & 2014-15.

2.3 Nature of the Project:

Mining of Limestone will be done by Open cast Mechanized method of

mining. Proposed production of Limestone is 80,000 TPA

2.4 Need For The Project And Its Importance To The Country:

The Mining project falls in the area of the district Dima Hasao(North Cachar

Hills ) ,Assam 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. The mining activity will have positive impact

on the socio economic condition of the area by generation of new employment to

the local in habitants; resulting in increase in per capita income. The density of

population in the nearby area will increase due to improved economic conditions

such as frequent transportation and medical facilities.

2.5 Demands-Supply Gap

Limestone produced at this mine is directly proposed to be used for

cement making.

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

The mine is captive to the cement plant .No mineral is proposed to be sold

to outside parties.

2.9 Employment Generation (Direct or Indirect)

The managerial, operational and functional manpower will be employed.

S.No. Designation Numbers Category

1 Mine Manager (as per MMR 1961) 1 Managerial

2 Mining Engineer (as per Rule 42

MCDR 1988)

1

3 Geologist (as per Rule 42 of MCDR

1988)

1

4 Mine Foreman 1 Qualified under

MMR 1961 –

Highly-Skilled 5 Mining Mate 1

6 Driller 1 Highly - Skilled

7 Blaster 1

8 Excavator operator 1

9 Tipper operator 7

10 Tipper helper 7 Semi-skilled

11 Misc Workers 5

12 Labour 3 Unskilled

Total 30

No person other than those duly authorized by Manager and Management

shall enter in the mine for the purpose of dealing with emergency. Timekeeper

shall record in his register the entry to and exit from the mine of any

authorized person.

3.0 PROJECT DESCRIPTION

3.1 Type of Project including interlinked and interdependent projects:

The proposed project is mining unit of Limestone. It is proposed to produce

80,000 TPA of Limestone. Lease area is situated at Village – New

Umrangshu, Taluka – Umrangshu & Dist. – Dima Hasao (North Cachar

Hills),Assam

No Interlinked or Interdependent project.

3.2 Location

State : Assam

District : Dima Hasao

Taluka : Umrangshu

Village : New Umrangshu

The entire project area is 35.0 hectares. The lease area is a Unclassified

Mixed Forest.

TOPOSHEET NO. WITH LATITUDE AND LONGITUDE –

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

The lease is located at following latitude and longitudes:

The area lies between co-ordinates N25030’55.72” to N25°31’18.40”

And E92°46’32.90” to E92°46’50.89”.

Pillar Latitude Longitude

E 25030’55.90” 92046’33.30”

F 25030’55.72” 92046’50.89”

G 25031’18.40” 92046’50.80”

H 25031’18.40” 92046’32.90”

The highest elevation of the lease area is 520 mRL and 340 lowest being

mRL.

3.3 Details of Alternate Site Considered and the Basis of Selecting the

Proposed Site, Particularly the Environmental Considerations Gone Into

Should Be Highlighted:

Mining is site specific project and limited to mineralized area.

3.4 Size/Magnitude of Operation:

It is proposed to produce Limestone at 80,000 TPA in the plot area of 35.0

hectares by Open cast Mechanized method of mining.

3.5 Project Description with process details & Flow diagram

The proposed project is mining of Limestone Mine. It is proposed to

produce 80,000 TPA of Soapstone. Lease area is situated at Village – New

Umrangshu, Taluka – Umrangshu & Dist. – Dima Hasao (North Cachar

Hills), Assam

Year Wise Production:

Year Pit No. Total

Tentative

Excavatio

n

in cu.m.

Top

Soil

in

cu.m.

OB/ SB/

IB

in cu.m.

ROM cu.m. Mineral

Reject

Waste : Mineral

cu.m.: cu.m. Ore

Ratio

cu.m.

Minera

l

Reject

cu.m.

1 2 3 4 5 6 8 9

15-16 Lapsed Period

16-17 No. 1 40639 00 8568 32071 00 Nil 0.27:1

17-18 No. 1 46950 00 14892 32058 00 Nil 0.46:1

18-19 No. 1 45312 00 13224 32088 00 Nil 0.41:1

19-20 No. 1 44034 00 11922 32112 00 Nil 0.37:1

176935 00 48606 128329 00 Nil 0.38:1

Year Waste Limestone (ROM) Stripping Ratio

Cu.m. Tonnes Cu.m. Tonnes Waste:Mineral

Cu.m.:Cu.m.

15-16 -- -- -- 17986

(Actual)

16-17 8568 22276 32071 83385 0.27:1

17-18 14892 38719 32058 83350 0.46:1

18-19 13224 34382 32088 83428 0.41:1

19-20 11922 30997 32112 83491 0.37:1

48606 126374 128329 333654 0.38:1

PROPOSED METHOD OF WORKING

The limestone horizon (cement grade) is of massive and uniform nature with

average thickness of 54 m. The top and bottom of the limestone band is generally

uniform and regular except in exposed region.

The top limestone is a persistent horizon separated from the "Bottom Limestone"

by a uniformly developed shale band. The poor carbonate content of the top

limestone horizon makes it partially suitable for cement industry. Therefore, the

combined thickness of Kopili sandstone, part of top limestone and shale beds is

removed as overburden. The topsoil is removed separately wherever available,

for use in land reclamation.

The New Umrangshu limestone mine is worked by M/s NECEM Cements Ltd.

since 1987 as captive limestone source to their cement plant located near to the

mine. In view of the hill slope occurrence the limestone benches developed from

the upper part to gradually lower level in middle part of lease hold.

(i) Existing method of Excavation / Design parameters:

Limestone at this mine is mined manually using jack hammer for drilling blast

holes of 32 mm dia and blasting using ANFO with booster explosive. Main

operating parameters are as given below:

Bench Height; 3 m

Bench width: 3 to 6 m

Bench Slope: 800 to 850

Drill hole Dia; 32mm

Loading of mineral: Manually

Access Road: 1:16

Machinery in use: Jack hammers drill – 32 mm dia.

The suitability of the method of mining selected earlier was based on the

geological considerations. It is proposed to continue with the existing method of

mining deploying drills, adopting blasting, loading manually and hauling by

tipper to crusher plant. The present working pit dimension as given below :

WORKING PIT DIMENSIONS (m)

Length Width Depth Pit Top RL Pit Bottom RL Dip

278 182 62(max.) 455 393 2° to 8° varies

10(min.)

Bench height varies from 5.0 m to 15.0 m.

(ii)Proposed method of Excavation / Design parameters:

Depending on the hardness and compactness of the strata in the bench and

presence of structural disturbances the slope of bench has been kept at 80°.

Ultimate pit slope will be at 45°. The formation of productive benches details as

given in tabular form as below :

Parameters

Bench height 6m

Bench width 6-15 m

Hole Dia. 102mm

Bench slope 80° in Limestone

Ultimate mining limit at depth 344 mRL

RL of existing Benches in limestone 425,412,410,407,406,402,399 & 395

mRL

Excavator - Hydraulic 0.9 cu.m. bucket capacity

Overburden bench 424- 448 mRL

In future, bench height will be maintained at 6m and width not less than the 6-

15m. The side of excavation shall be adequately benched shaped and

secured as to prevent danger from fall of sides as per regulation 106 of

the Metalliferrous Mines Regulations 1961, Mines Act. 1952, Mines Rules

1955 & M.C.D.R. 1988. Lessee will obtain permission from DGMS wherever

required.

3.6 Availability of water its source, energy/power requirement and source :

Quantity of water required for mining and allied activities is about 6 KLD. There

is no requirement for processing. Required quantity of water will be available

from the bore-hole located near applied lease area.

Water Balance Chart

Diesel for trucks/equipment – about 600 Lt. /day is assumed to be

consumed. Diesel will be brought from outside, from nearby diesel pumps.

3.7 Quantity of wastes to be generated (liquid and solid) and scheme for their

management /disposal:

Waste Dump Management;

Nature of Waste : The workable Limestone (bottom band) is covered by Shale,

Limestone (Top band), Kopili & Soil as O/B. Detail of which are as follows:-

A. Soil:- The limestone deposit is normally capped by a thin mantle of soil which

is sticky and red in color. Thickness varies 1m to 2m.

Dug well/ Tube well outside

the lease area

6.0 KLD

Dust supper.

3.0 KLD

Drinking & Sanitation

0.5 KLD

Plantation

2.5 KLD

Soak Pit

No out flow

No Outflow

B. Kopili sandstone alteration: - It is whitish to brownish in color and medium to

fine grain well sorted and generally soft in hardness and sometimes friable in

nature, over top band Limestone.

C. Shale: Some shale as waste encountered with workable limestone bed (lower

band.

Shale and sandstone alteration will constitute O/B waste that has to be

removed as the benches advances towards upper horizon.

Top soil will be generated that will be separately removed and simultaneously

used for plantation.

Year Waste in Cu.m.

2016-17 8568

2017-18 14892

2018-19 13224

2019-20 11922

Total 48606

Area for waste Dump;

The area marked for long term waste disposal has been examined by

geological mapping, structural interpretation. The contours in the identified

waste disposal area varied from 370 m to 380 m. The O/B waste will fill this

sloping ground and will not produce any disharmonious feature with the local

physiography

The area considered for dumping is adequate enough to accommodate the total

quantity of waste up to the max. height.

System of Drilling & Blasting;

Broad blasting parameters : The mining method chosen involves the drilling

and blasting followed by loading with excavator considering the nature of the

limestone deposit and increase in production in future, the blast hole

parameters proposed are as follows :

Bench height = 6m

Depth of hole = 6.6 m (10% sub-grade drilling)

Dia. of hole = 102 mm

Burden = 3.0 m

Spacing = 4.0 m

Inclination of hole = 10° from vertical

Tonnes per hole = 187 t

Tonnes /day = 406 t

No. of holes ./day = 406/187 = 2.17

No. of holes per day = 3

Blasting Pattern

For every hole, one delay detonator would be used. Blasting would be done by

using short delay action detonators to reduce ground vibration. Holes would

be connected in a row “in series” and the rows “in parallel”, i.e. “series –

parallel” connection would be made at the time of blasting. Double row

blasting would be preferred (as shown in Fig. below) to single row so as to

cut down on the number of blasts required for maintaining production.

S(spacing)

O O O O O O O O O O

B(burden) S=4.0 m

O O O O O O O O O O

B(burden) S=4.0 m

O O O O O O O O O O

B=3.0 m

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

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

Free face

Type of explosives to be used : The following type of explosive will be require

for blasting :

a) Class-2 & 3, b) Class-6, Div-2 & c) Class-6, Div-3

It has been estimated that consumption of ANFO & other high

explosives shall be in the ratio of 80 : 20.

Storage of explosives :

The portable type magazine of 500 Kg. capacity is available at mine site with

capacity of ED(Class-6, Div.3) 2,500 nos. per month. (Annexure No. XVII.

Precautions to be observed during drilling & blasting :

Ground Vibrations & Noise : All blasting operations would be performed

by Competent person taking adequate precautions to make the operation

totally safe. Even though there is no habitation in the vicinity within the

danger zone, the blasting pattern would be designed to keep the ground

vibrations & noise to a minimum. The frequency of blasting too would be

optimized by adopting multi-row blasting using delay detonators.

Air Blast & Fly Rock :

Fly rock control would be given high priority and the blasting pattern,

stemming column, charge per hole, etc., as discussed earlier, are likely to

control fly rock. In addition, the detonating cord trunk line would be

covered with drill chips and cutting to keep the air blast to a minimum.

However, depending on the actual experience once the excavation

commences, blasting parameters might be changed suitably to adhere to

strict safety measures.

Other Safety Measures :

Adequate sirens and other sound signals would be given to posting of

guards at strategic positions.

All the terms and conditions laid down in the explosive license would be

complied with. House keeping with regard to explosives would be given

adequate attention. No dangerous / inflammable articles, viz., cigarettes,

biddies, matches, lighters, would be taken or allowed to be taken by the

personal employed for blasting activities. The area surrounding the mixing

shed would be kept free from accumulation of inflammable material,

including bushes & undergrowth, etc., to reduce the hazards from bush fire.

Extent of Mechanizations:

Details of machines available at present are given below:-

LIST OF MACHINERY DEPLOYED

S.No Machinery Model/type Capacity H.P Unit

1. Atlas Copco Compressor XAH 210 450 cfm 166 1

2. Jack Hammer Drill 32 mm dia. 105 3

3. Tata Tipper Tata 10 t 90 4

4. Water Tanker Tata 3KL - 1

Requirement of machinery:

Machinery Required Amount

No of drills 1 m/c

No. of Excavators 1

No. of Tipper 7

3.8 Resource Optimization/Recycling and Reuse Envisaged In the Project, If

any, Should Be Briefly Outlet:

. Not Applicable

3.9 Raw Material Required Along With Estimated Quantity, Likely Source,

Marketing Area of Final Products, Mode of Transport of Raw Material and

Finished Product.

The project will itself generate raw material i.e. mineral Limestone and

proposed production is 80,000 tones/annum.

3.10 Schematic Representations Of The Feasibility Drawing Which Give

Information Of EIA Purpose:

4.0 SITE ANALYSIS

At present no site service are provided within the lease area. However, the site

services are provided near the mines and are as follows and these will be

maintained in future.

I) Statutory Obligation:-

a) First Aid / Room Station:

A First Aid Room will be maintained with the equipment as

specified in the Second Schedule of Mines Rules 1955. In addition,

First Aid boxes containing the equipment as specified in the third

Schedule of the Mines Rules will be provided at Mine Garage.

b) Canteen / Rest shelter

Although it is not a statutory obligation in view of the small

strength of manpower at the mine, a good canteen already

established in the mines office premises for the employees to take

food and rest.

c) Drinking Water

In order to cater to the needs of the drinking water, sufficient

quantity of water will be made available to the employees. A

number of outlets for water at the crusher, garage, mines office and

canteen and steps already established to ensure that water is

always available during the working hours. One mobile water

tanker for water spraying and supply of the water in case of any off

site work will be deployed.

d) Urinals & Latrine

Sufficient number of urinals and latrines are provided at mines

premises.

ii) Maintenance Workshop

All the moving equipment will be maintained at the workshop at the

Umrangshu 16 km away from mine area.

iii) Other Facilities

A mine office, located between the cement plant and the mining lease

area, is provided for personnel welfare, training safety, quality control and

mine planning.

4.1 Connectivity:

Connectivity details from Project Site:

Sr.No. Particulars Details

1. Road Connectivity

From Guwahati via Shillong -245 Km

From Shillong-140 Km

From Guwahati(via Lanka)-254 Km

From Lanka-64Km

2. Nearest Highway

SH-20 from pillar H distance is 300 m

.

3. Nearest Railway

Station Lanka on the NE frontier railway -65 km

4. Nearest Airport Guwahati 240 km

4.2. Land form, land use and land ownership

Lease Area : 35.0 ha.

State : Assam

District : Dima Hasao (North Cachar Hills)

Taluka : Umrangshu

Village : New Umrangshu

4.3 Topography:

The limestone belt of the Kopili river valley constitutes the SE flank of the

Shillong Plateau and comprises of small flat topped hillock with elevation

varying from 840m to 580m above MSL. The highest altitude 837.29 m in

the region has been observed at Khandong, about 12km west of New

Umrangshu. The mining lease area is a part of NNW-SSE trending ridge in

hilly terrain of the region and situated on southern slope of the hill range.

The Langyen nalla flows through the western part of the lease area in a

South and then towards east direction. The land rises from about 350 m

to a height of 620 m. The general physiographic features of the region has

been furnished in the Key Plan(Plate no. 1B) The physiographic

characteristic of the New Umrangshu mining lease area has been furnished

in the surface plan of the lease area. (Plate no. 2A.).

The area was re-surveyed based on the authenticated map provided by the

lessee. The highest contour is on northern boundary at 520AMSL and

lowest being 340AMSL along southern lease boundary.

DRAINAGE

The drainage of the lease area is connected through many small nallas

discharging in the Langyen Nalla and this nallah join to Amrang nalla in

the SE side of the area near the Langyen Basti and flows in a SE

direction with the name of Langyen nalla, which ultimately flows in the

Kopili River. The local nallas generally carry meagre drainage during dry

season while in rainy season their water level may rise considerably from

the bottom for short period of heavy rains. The Langyen nalla being typical

hilly terrain drainage cuts through the high ground creating gorges. The

local drainage pattern featuring of the New Umrangshu mining lease area

showing in the Surface Geological Plan(Plate No.2B).

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 Hydro Power Project, which generates 150 MW Power. Kopili

reservoir is the source of water for Agricultural and Industrial area.

4.4 Existing Land use Pattern

Present land use pattern of the lease area is as follows:-

Particular

Area (In Hect)

PITS 4.932

WASTE DUMP 1.340

ROAD 0.910

PLANTATION 6.280

REMAINING LAND 21.538

TOTAL AREA 35.000

4.5 Existing Infrastructure

The Base Control Room will inform about the emergency to the Stores in-

charge & store in-charge will immediately on receipt of such information will

keep the store open. A list of item (normally used for the Rescue Operation)

will be maintained and stocked separately. The Stores in-charge will ensure

that all the items are always readily available. In addition to this the other

infrastructure like Crane, Chain Pulley block, Pumps, Ropes etc. will also be

arranged as per requirements. In case any of the items which are not

available, the store in-charge will make necessary arrangement for its local

purchase or procure from nearby mines.

4.6 Soil / rock classification

The soils of the district vary from non-laterites red soil to laterite red soil

ranging from sandy loam to clayey loam in texture The non laterites red soils

occupy a relatively less area along a strip in southern part of the district .The

soil in the study area are red in color may be due to the presence of Iron oxide.

Soil texture is sandy loam to clay loam.

4.6.1 Description of the rocks units within the lease area

REGIONAL GEOLOGY

The limestone belt of the Kopili Valley, of which New Umrangshu Limestone

Mine is a part, belongs to the Jaintia formation of Eocene system of Assam. The

generalized stratigraphic sequences of the Jaintia group are provided in the

following table

Age Formation Predominant Litho Types

Eocene Kopili Stage Intercalation of splintery shale and medium grained

brownish sandstone.

Sylhet Limestone Stage Fossiliferous limestone, thick well bedded, with

occasional shale Partings.

Basal Stage Massive sandstone with impersistent thin coal

seams.

The Pre Cambrians are exposed along the Khandong ridge and at the site of

Kopili Hydro Projects, west of the limestone deposit. Basal Standstone are well

exposed near the Kopili and Kharkare confluence and on the beds of nalla

cutting across the limestone belt in the SE side of the New Umrangshu block.

The Basal sandstone was encountered in all the boreholes drilled in the mining

lease area at its closing depth. Sylhet limestone occupies large tract along the

Kopili valley from Elli falls to Panimur. The Eocene limestone belt of Kopili

valley has a strike length of about 40 km and width of 2 km to 4 km along the SE

side of the Garampani-Umrangshu-Lanka road. Surface exposure of limestone

beds has been observed at Jambung, near Umrangshu village and at 4th

km, 11th

km and 13th

km on the Garampani - Lanka road. The limestone deposits of the

area, as identified by Directorate of Geology and Mining (DGM) Assam, have

been marked into different blocks as mentioned below.

1. Garampani Block, 2. Umrangshu Block, 3. High grade Block 4. Timhand Block & 5. New Umrangshu Block

The Geological report, prepared by the Directorate of Geology and Mining,

(DGM) Assam on the basis of exploration carried out by them in New

Umrangshu area is the basis for geological data of the area.

Local Geology

The mining lease area is situated in Jhikri formation of Jahazpur group

belonging to Bhilwara super group. The rocks consist of alluvial soil, sand

talus, ferruginous brecciated chert, Phyllite, dolomite limestone and

soapstone\. The stratigraphic succession of rock observed in the area is

given below:-

Super group Group Lithounits

Recent sub recent Alluvium, soil, sand

and talus aeolian sand.

Bhilwara super group Jahazpur group Jhikri formtion

Ferruginous chert

Phyllite

Soapstone

Dolomite limestone

Major part of area is covered by thin recent soil, talus almost on all sides.

Only in the eastern and north eastern part rocks are noticeable on surface

dolomitic limestone and phylite are two majore rock formations seen in

these out crops dolomite limestone is being more dominating over phylites.

There is small patch of ferruginous brecciated quartzite in lease area in

the southern part at the out skirts of such out crop, the dolomitic

limestone, soapstone and pyrophylite have been concealed below a thick

soil or talus cover, the thickness of cover increases toward the

agricultureal land towards west and North West.

Soapstone occurs as veins of varied thickness and length within the

dolomitic limestone with alternate thin or thick bands of unaltered

dolomitic limestone. Several consecutive vein without thick dolomite

limestone from good zone of mineralization locally called rich zone of

soapstone. Similarly, there is another zone very near to this, in contact to

this zone which is comparatively poor in soapstone content and has been

named as lean zone and is on eastern side of rich zone. The contacts of

soapstone veins with that of dolomitic are generally sharp, but at place it

is gradational also.

4.7 CLIMATIC DATA FROM SECONDARY SOURCES

Climate

The climate of the district of Dima Hasao (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 coldest month is

January and the hottest month is May. The maximum and minimum

temperature recorded in the area is 400C in summer and 60C in winter

respectively. The rainfall is mostly distributed between the months of July and

September.

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.

The nearest IMD station to the study area is located at Silchar. Based on the

Meteorological data such as wind speed, wind direction, temperature, and

relative humidity from IMD station summarized as below:-

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

Rainfall

The annual average rainfall as about 1145 mm per year. 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

4.8 Social Infrastructure

The Base Control Room will inform about the emergency to the Stores

in-charge & store in-charge will immediately on receipt of such information

will keep the store open. A list of item (normally used for the Rescue

Operation) will be maintained and stocked separately. The Stores in-charge

will ensure that all the items are always readily available. In addition to this

the other infrastructure like Crane, Chain Pulley block, Pumps, Ropes etc.

will also be arranged as per requirements. In case any of the items which are

not available, the store in-charge will make necessary arrangement for its

local purchase or procure from nearby mines.

5. PLANNING BRIEF

5.1 Planning Concept:

It is a mining project of Limestone . The proposed production of is 80,000

TPA (ROM). Opencast, mechanized method of mining will be adopted and

transportation of mineral shall be done through road by trucks.

5.2 Man Power requirement:

Total Man power requirement for mining is estimated to be 30 Nos. Most

of the employees will be recruited from neighboring village.

5.3 Land use Planning:

Based on the present reserve estimation under 121and 332 category, conceptual

plan has been designed as follows:

LAND USE PATTERN

Particular's

Present position of the area In hect.

Position at the

end of 5th year

At the end of

lease period/end

of life In hect.

1. PITS 4.932 5.680 22.45*

1. DUMP (KOPILI ALTRATION / SHALE)

1.340 1.680 1.96

4. ROAD 0.910 0.970 0.65

5. PLANTATION 6.280 7.280 4.85

6. REMAINING GOVT. LAND 21.538 19.390 5.09

TOTAL AREA 35.000 35.00 35.00

* About 2.86 hect. use for rain water storage & 6.04 hect. mined out benches

will be planted. The dump (1.96 hect.) area will be also planted.

Proposed working areas are situated in unclassified forest land, negative

impact on land use pattern will be in the form of pit, dump & infrastructure etc.

Positive impact will be in form of plantation over 12.85 hect.

Conceptual plan will be reviewed after complete exploration

5.4 Facilities Provided:

5.4.1 Infrastructure

The Base Control Room will inform about the emergency to the Stores in-

charge & store in-charge will immediately on receipt of such information will

keep the store open. A list of item (normally used for the Rescue Operation)

will be maintained and stocked separately. The Stores in-charge will ensure

that all the items are always readily available. In addition to this the other

infrastructure like Crane, Chain Pulley block, Pumps, Ropes etc. will also be

arranged as per requirements. In case any of the items which are not

available, the store in-charge will make necessary arrangement for its local

purchase or procure from nearby mines.

5.4.2 Landscaping and Green Belt Development

There is no proposal of reclamation of land affected during plan period.

The mining excavation remains confined on elevated portion and at the end

of plan period, about 4.932 hect. are already covered under mining.

At the end of plan period total 5.412 hect. area will be degraded up to 406

mRL and 7.280 hect. area will be covered under plantation . At the end of

plan period, no mined out area will be backfilled because still there will be

mineral available for future mining. It will be reviewed at the time of next

scheme of mining submission.

At the end of mining when mineral will be fully exhausted, mined out area

will be rehabilitated in way of plantations on mined out benches and deepest

part will be used as rain water storage to recharge ground water for

surrounding area and also for watering of plants. (Refer Plate no.6)

Plantation; Seedlings grown with root trainer will be planted on the slope and

floor of the terrace at a spacing of 3 x 3 m. staggered pattern. In between the

plants Vetiver or Hemata grass will be grown which has good soil binding

characteristics.

At the final stage contour ripping will be done on top of the dump to prevent

formation of gullies along the slope of the dump.

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 MMR 1961 and 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 and leaving 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

Risk Assessment

The limestone deposit by virtue of being the member of Himalayan rocks is

highly unstable structurally and geological evidences in the area support to this

fact.

Due to the structural weaknesses and high rainfall characteristics the area is

prone to loosening of rocks, swift currents carrying heavy sediment load,

uprooting of trees involving the following risks-

(a) Land slides

(b) Flash floods

(c) Damage of life and property

(d) Disruption of road & telecommunication facilities.

(e) Lightening

(f) Fire hazard in equipment

(g) Fall of person or machinery from high benches

Disaster Management :

The complete mining operation will be carried out under the Management,

supervision and control of experienced and qualified Mines Manager having

Certificate of Competency to manage the mines, granted by DGMS. Standing

orders and circulars issued by DGMS shall be followed by the mine

management in case of disaster, if any.

To avoid any fire hazard all heavy earth moving equipment shall be provided

with fire fighting equipment. All fuel storage stations shall be provided with

adequate fire fighting arrangements. Personal shall be given proper training

in fire fighting and mock rehearsals conducted.

However to meet any emergency a Disaster Management Plan shall be

prepared widely circulated and training through rehearsals and mock drills

shall be done.

The objective of the Disaster Management Plan is to make use of the

combined resources of the mines and outside services to achieve the

following:-

Effect the rescue and medical treatment of casualties.

Safeguard other people.

Minimize damage to property and the environment.

Initially contain and ultimately bring the incidence under control.

Identify any dead.

Provide authoritative information to the News media.

Secure the safe rehabilitation of affected area.

A senior most Executive will be heading the emergency organization. He will

work as site controller. Mine Manager will work as incident controller to

organize the team for controlling the incident with the person under his

control.

To deal the above emergency, the following steps will be taken as per

emergency plan.

6. PROPOSED INFRASTRUCTURE

S.NO Details

1 Mining Area 35.0 hectares.

2 Residential Area Not Applicable

3 Connectivity From Guwahati via Shillong -245 Km

From Shillong-140 Km

From Guwahati(via Lanka)-254 Km

From Lanka-64Km

5 Water Management 6.0 KLD, Source: Dug well/ Tube well

outside the lease area

6 Power Management N.A.

7 Waste Water N.A.

8 Solid Waste

Management

The Limestone will be dumped at

earmarked site and plantation will be done

on dump area .

9 Hazardous waste

Management

N.A.

7. REHABILITATION & RESETTLEMENT PLAN

Not Applicable

8. PROJECT SCHEDULE

8.1 Likely date of start of construction and likely date of completion (time

schedule for the project to be given)

The project activity will be started after getting the Environmental

Clearance from SEIAA.

8.2 Project Cost Estimation

Estimated Project Cost with the proposed production is 70 lakh

(A) Capital Investment

Capital Expenditure (in Rs) Cost

Tools 1,00,000

Air compressor 3,00,000

Jack Hammer Drill 75,000

Pump 25,000

Tipper 15,00,000

Total A 20,00,000

Other Not Specified 5% of A 1,00,000

Initial Spares 10% of A 2,00,000

Office ,Rest Shelter 1,00,000

PMCP Ist Year 6,26,000

Bank Guarantee 2,08,250

EMP 25,00000

CSR Activities 10,00000

Miscllaneous 2,00000

Total Capital Expenditure 69, 34,250 Lakh...approx 70 Lac

(B) Operational cost-

The mineral Limestone will be mined from the lease area and the cost of

per ton of mining will be app. Rs. 270.12 /- per tonne.

8.3 Economic Viability

The anticipated cost of mining is Rs. – 270.12/-ton. Average sale value is

Rs. – 480/-ton for Limestone .Hence the project will be viable.

9.0 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-II

Annexure-III