Prefeasibility Report of ROHINI OCP (5.0 MTPA)

SUMMARISED DATA Sl.No. Particulars Details

1. Name of the Project Rohini OCP (Expansion from 3.3 to 5.0 MTPA) North Karanpura Area, CCL.

2. Type of the Project Opencast coal mining Project.

3. Location Village –Karkatta, Nawadih &Tumang Block - Khalari District – Ranchi(65 km) Nearest Railway Station - Khalari (07Km).

4. Method of working Shovel Dumper combination.

5. Purpose of the present proposal Mining Plan and mine closure plan for increase in mine capacity from 3.3 MTPA to 5.0 MTPA within the same project area. The mine plan and mine closure plan of increased capacity is required for environmental clearance of project.

6. Area of the Project 255.68 Ha

7. Earlier approval of Project Report Project Report of Rohini OCP approved in 351th meeting of Board of Directors of CCL held on 29.09.2008.

8. Seams considered Middle Lower Dakra, Top Lower Dakra and Upper Dakra

9. Grade of coal G-11

10. Gradient of the seams 20– 30

11. Total Mineable reserves (as on 31.03.2018) 7.61 MT

12. Target capacity Peak 5.0 MTPA.

13. Maximum working depth (m) 65 m

14. Area of Excavation 204.05 Ha.

15. Area of External Dump Nil

16. Main consumers proposed Basket linkage to the consumers in power sector &sponge iron.

17. Life of the project Balance 2 years from April 2018,i.e. from 2018-2019 onwards

18. Total Existing Manpower (April 2018) 509

19. Power supply Through 33KV feeder of new KDH sub-station.

20. Coal despatch arrangement By tipping trucks from mine to KDH &Dakra Railway sidings.

CHAPTER – I INTRODUCTION 1.1 Brief Description & History of the Project

Rohini Opencast mine is an operational mine of CCL. The Project falls in North Karanpura Coalfields in Khalari CD block, Ranchi district of Jharkhand state.

Initially, there was an expansion in capacity from 0.80 MTPA to 2.00 MTPA (incremental 1.20MTY). The expansion was planned by extending dip side boundary of the existing project in Rohini Geological Block. The earlier Rohini OCP (0.8MTPA) was sanctioned in March 1991 with capital investment of 27.18 Crores. The expansion Project Report of Rohini OCP (2.0/2.30 MTPA normative / peak capacity) was approved in 351st meeting of Board of Directors of CCL held on 29.09.2008 with capital investment of Rs 105.67 crores. The Environmental clearance was granted by MoEF&CC on 05.10.2009.The mine is operational since 1992-93. Afterwards under clause 7(II) of EIA 2006 the capacity of Rohini OCP was increased from 2.30 MTPA to 3.30 MTPA. The Environmental clearance was granted by MoEF&CC on 21.02.2017

Present Proposal

1.2 Purpose of this report To facilitate Environmental clearance for enhancement in capacity to 5.0 MTPA Peak

1.3 Identification of Project Proponent Central Coalfields Limited (CCL), a subsidiary of Coal India Limited is a prime producer of coking & non-coking coal in the country. It operates coal mines in the state of Jharkhand. Mining operation is spread over six coalfields i.e North Karanpura, South Karanpura, East Bokaro, West Bokaro, Ramgarh and Giridih Coalfields.

The proposed project, i.e. Rohini Expansion OCP is administratively under NK Area of CCL headed by General Manager, NK Area.

1.4 Brief description of nature, size and location of the project

Nature & Size

Rohini Expansion OCP is an opencast coal mining project. The total requirement of land is 255.68Ha. The balance life of the project is 2 years as on 31.03.2018.

Location, Communication& Drainage

Rohini opencast Mine is located just south of Damodar river in Khalari block, Ranchi district of Jharkhand State. K.D Hesalong and Karkatta OCP are situated south of the project while Purnadih OCP and Ashok OCP are situated on the other side of river Damodar. It is covered by the Survey of India topo-sheet no. 73-A/14. The nearest Airport connected by daily commercial flights is at Ranchi.

Major Drainage system is Damodar river. HFL of river Damodar is upstream 428.00 m & downstream 426.00 m and surface RL of the area varies from 416m to 467m along river Damodar.

CHAPTER-II

PROJECT DESCRIPTION

2.1 Land Requirement for the Project

The total requirement of land for Rohini OCP( 5.0 MTPA) is 255.68Ha. A detailed break-up of land use under different heads is shown in the following table.

Total land for exp. project Particulars Forest Non- Forest Total Quarry 138.33 65.72 204.05 Haul Road 1.63 0.50 2.13 Embankment 6.53 14.24 20.77 Nala Diversion 0.30 0.50 0.80 Safety Zone 0.00 27.93 27.93 Gross Total 146.79 108.89 255.68

NOTE: Total available FC is for 71.98 Ha +74.81 Ha ie 146.79 Ha.

2.2 Present status of project

The last Project Report of Rohini Expansion OCP was approved in 351st meeting of Board of Directors of CCL held on 29.09.2008. The latest Environmental clearance was granted by MoEF&CC on 21.02.2017. Currently this is a running mine & production for last few years is given below.

SN Year Coal (MT) OB (M Cum) 1 08--09 0.70 1.52 2 09--10 0.82 1.20 3 10--11 0.82 1.06 4 11--12 0.70 0.93 5 12--13 0.74 0.97 6 13--14 0.73 0.89 7 14--15 0.55 1.11 8 15-16 0.51 1.20 9 16-17 2.79 7.99 10 17-18 3.3 4.33

2.3 Salient features of the project

Quarry

The mine is already under operation with five 5 cum electrical rope shovels and two 4 cum hydraulic shovels. Since the quarry is already working no box cut is needed to open the quarry as the present mine operation is in strike direction with the existing bench length of about 250 m. In this report, it is proposed to follow the inclined slicing method of operation. Internal dumping is proposed to fill up area excavated.

Mining System Considering the technical parameters of the quarry,i.e gentle dipping of the seam(20 to 30), long strike length of quarry(2.15 to 2.3 km),multiple seam of various thickness ,total life of the project etc.,the shovel dumper mining system has been proposed for the project. The benches are made parallel to the roof and floor of the seam wherever possible. The height of individual benches are 10-12 m in OB and in coal height of the bench are equal to thickness of the seam. The width of working and non-working benches are 40 m and 20 m respectively in coal and OB. In total, there are three benches to be worked at a time where the shovels are deployed. The other benches are non-working. This has been done in order to make the running slope moderate. With this system of mining, the running slopes of quarry is 130 corresponding to an ultimate slope of the quarry as 450for an ultimate depth 65 m.

Coal Winning

The coal is mined with hydraulic shovel working with 35 T Rear Dumpers. The coal from bottom seam i.e Middle Lower Dakra seam is transported through the haul road made on the floor of the seam at gradient not exceeding 1 in 16 with a width of 20 m. The coal from other seams is transported through either the batter’s or through the ramp to the upper bench/surface. The ultimate depth of quarry being 65 m only, the coal transportation from the benches to surface is not a problem. The ROM coal after crushing is transported to KDH siding. Further coal transport is through the railway transportation system

O.B. Removal

THE OB along with the partings is removed by 5 cum Electric Rope Shovel and 4 cum Electric Hyd Shovel. OB is transported from face to dumping site through batter’s road made at a gradient not exceeding 1 in 16 with a width of 20 m.The Top OB is transported through surface roads. However, the topsoil is preserved at a suitable place for reclamation.

Drilling and Blasting

For drilling in coal, 1 no RBH drill of 160 mm dia has been provided. For drilling in OB 3 no of RBH drill 160 mm diaalong with 1 no of 250mm diameter have been provided. Specific consumption of explosives has been envisaged as 0.3 kg/cum and 0.2 kg/cum for OB and coal respectively.

Present Population of Main HEMM

The HEMM on roll is given below:

Electric Rope Shovel EKG 5A 5 Cum 05

Hydraulic Shovel CK 300 02

35T 04

Rear Dumpers 60T 03

100 T 09

IDM 300 Drill 02

Dozer D 155 02

Dozer D 355 03

Wheel Dozer 01

Motor Grader 02

Water Sprinkler 02

Escort Hydra Crane 12Te 01

Crane 40Te 01

Tire handler 01

Mine Boundary

Northern Boundary Quarry surface boundary on northern side has been fixed keeping a surface barrier of 120m from Damodar river and floor boundary is restricted by a fault no. 10. The southern floor boundary has been fixed keeping a distance of 60 m Southern Boundary from Kendua river which flow to west to east and meet the river Damodar at S-E edge of the quarry Eastern Boundary The eastern floor boundary has been fixed keeping a surface barrier of 120m from river Damodar. An embankment along Damodar river in eastern side and will continue upto northern side with top level +445m. Western Boundary The western surface boundary has been fixed along 1:2.5 to 1:3 vertical cut-off ratio lines leaving aside the staff quarter of CCL, Fault F17 and F13 also plays a vital role in deciding the western boundary.

2.4 Geological & Mining Characteristics

The Geological & Mining Characteristics of Rohini Expansion OCP are given in table below. Middle Dakara, Top Lower Dakara and Upper Dakra seams are proposed for extraction within the above quarriable area. Dip of formation varies from 10 to 20 towards west in major part of the area. However at places the dip variation from 10 to 70 have also been observed.

Mining & Geological Characteristics of the Quarry

Sl. No. Particulars Unit Value I COAL A Seam Thickness 1 Middle Dakra M 8-13 2 Top Lower Dakra M 1-3 3 Upper Dakra M 1-2 B AV. SPECIFIC GRAVITY 1 Middle Dakra T/m3 1.67 2 Top Lower Dakra T/m3 1.68 3 Upper Dakra T/m3 1.63 C. Excavation Category Assumed III 2 OVERBURDEN A Parting Thickness a) Parting between Middle Lower Dakra& Top M 4-18 Lower Dakra

b) Parting between Top Lower Dakra& Upper M 2-12 Dakra c) Top OB M 10-30 B AV. SPECIFIC GRAVITY T/m3 2.4(Approx.) C Excavation Category Assumed 50% Cat.III +50% Cat. IV 3 QUARRY PARAMETERS Maximum length of quarry along strike a) a) at surface Km 2.35 b) at floor Km 2.30 a) Maximum width of quarry along dip b). b) at surface Km 1.04 c) at floor Km 0.95 c), Maximum Depth of quarry M 65 Area of Excavation d). a) at surface Km3 1.9 4 Maximum balance life of quarry Year 2

2.5 Balance Mineable Reserve & Life of Mine

Only three seams, namely Middle Lower Dakara and Top lower Dakara seam and Upper Dakara seam are mineable. Balance minable reserve (as on 1stApril 2018) of these three seams have been calculated as 7.61 MTe against the total OBR 16.20 MM3. Average stripping ratio comes to 2.12 M3 /Te. The seam wise coal reserve is given in the Table below

Sl.No. Name of seam Minable reserve in MTe 1 Middle Lower Dakara 6.16 2 Top Lower Dakara 1.00 3 Upper Dakara 0.45 Total 7.61

2.6 Solid Waste Management

The balance volume of OB to be removed from Rohini Expansion OCP is 16.20 Mm3.OB will be dumped internally excluding the OB already dumped for embankment.

2.7 Calendar Plan of Balance Coal & OB

Years 18-19 19-20 Total 1 2 Coal(MTPA) 5.0 2.61 7.61 OB(Mcum) 10.60 5.60 16.20

2.8 Water demand and management:

Water demand (m3/day)

Industrial 309.00

Potable 142.00

Total 451.00

Source of water: (mine water of RohiniExpn OCP for industrial use & Karkatta A Block reservoir for drinking water use through IWSS at Rohini colony). . Pumping Arrangement:

Rohini OCP is presently operating through Departmental Quarry and outsourced quarry. There are nearby surface water bodies like mine water sumps, reservoirs, Kendua Nallah & Damodar river in the vicinity of departmental & outsourced quarry which add to mine water seepage. The mine water pumping is required at following three places. (1)Sump at Departmental quarry (2)Sump at south of outsourced quarry (3)Sump at north of outsourced quarry.

Dewatering from outsourcing quarry main sump (towards north of outsourced quarry) is within the scope of CCL. 2 pumps are in operation in north of outsourcing quarryand are sufficient to meet the present requirement here.

Water from Sump at South of outsourced quarry will have to be evacuated before the departmental quarry advances near the sump to excavate coal below the sump departmentally. The tentative volume of accumulated water in the sump is 165000 cubic meter approximately which will be pumped by the existing pumps available in the mine.

The existing pumps may be utilized to dewater the accumulated water from sump near south and north of outsourcing patch whenever required.

Considering nearby water reservoirs, Kendua Nallah& Damodar river in the vicinity of departmental & outsourced quarry, requirement towards main pumps & pipes to run the mine smoothly as per current scenario is appended below:-

Sl.No. Particulars Unit Qty 1 150 lps x 100 m head,250kw,3.3kv with motor,starter&electricals Nos 7(5+2) 2 80 lps x 100 m head diesel pump set with accessories Nos 2 3 Steel Pipe of Internal diameter 300mm Km 3 4 Steel Pipe of Internal diameter 200mm Km 1 5 Miscellaneous items like valves, fittings, bends, armoured suction & LS delivery hoses, pontoon etc

2.9 Source of Electrical Power Supply:

Presently the Rohini ExpansionOC Project substation(1x3 MVA ,11/3.3 KV) is receiving power at 11 kv through one No independent single feeder with ACSR conductor from old KDH substation(1X10 MVA,33/11 KV).This substation is situated near the KDH OCP at a distance of 1.0 km(approx.)

The project shall receive 33 kV incoming power through One No single circuit OHTL with ASCR ‘WOLF’ Conductor tapping from the 33 kV FEEDER OF NEW KDH substation and will establish 33/3.3 kV, one No of substation. Power shall be distributed from this substation to various additional electrical equipment and load points.

The estimated connected loads; maximum demand and energy consumption at optimum production level for the Rohini Expansion Opencast Project is summarized below:-

S N Particulars Values

1 Connected Load in Operation (in kW) 6596

2 Maximum Power Demand (in kVA) 2865

3 Annual Energy consumption (in MkWh) 13.65 kWhrx106

4 Energy Consumption per tonne of coal production (in 6.82 kWhr/te)

2.10 Workshop & Store

A unit workshop exists in project. Presently this workshop is being utilized for the repair & maintenance of HEMM deployed in Rohini OCP.

The workshop caters to the need of daily maintenance, schedule maintenance, lubrication, routine inspection, minor repair and replacement of parts/sub-assemblies of HEMM such as Dumpers. Dozers, Shovels and Drills etc. and other E&M equipment deployed in the project.

Any major overhaul of equipment and manufacturing of spares on large scale are beyond the scope of this workshop. These works are carried out in nearby Regional workshop or Central workshop, Barkakana.

2.11 Coal Dispatch System

Presently coal produced from the mine is dispatched (after crushing from -1200 mm size to -100 mm size) by tipping trucks to nearby KDH railway siding for onwards dispatch to customers by Indian Railway wagons.

Civil Construction

Rohini open cast project is a running mine and there are many existing infrastructural facilities. The present life of this project has been estimated as 2 years.

SERVICE BUILDINGS

Excavation workshop, a small P.O office, VTC, weigh, bridge, security office, school, dispensary etc. are existing in project.

Colony Road

The length of existing roads inside the township is about 1.50 km

2.12 Capital Expenditure on Environmental Protection Measures(already approved)

SN Particulars Amount (Rs. In Lakh) Capital Expenditure ( as per approved Project Report of Rohini OCP - 2.00/2.30 MTPA) Cost of rehabilitation Cost of compensatory afforestation 665.71 Cost of restoration 451.85 Cost of Anti-pollution measures in mine & Industrial 259.29 area Cost of Anti-pollution measures in township 130.83 Other provisions 24.92

Compensation for non-forest land 55.17 Total 1587.77

2.13 Revenue Expenditure on Environmental Protection Measures

Revenue Expenditure Amount (Rs. In Lakh) Clean energy cess @ Rs 400/ tonne of coal produced (for 7.61 30440.0 MT of balance coal) Routine Environmental Monitoring (@ Rs 0.90 Lakh per 7.20 quarter* 2 years) Land-use & Reclamation Monitoring (@Rs 10.65 Lakh* 2 times 42.60 in 2 years) Dust Control Measures (@ Rs 15 Lakh per annum for four 28 kl 120 mobile water sprinklers) Miscellaneous (@ Rs 5.0 Lakh per annum for 2 years) 10 30619.80 Total

2.14 Detail of Financial Assurance for Mine Closure

PROGRESSIVE AND FINAL MINE CLOSURE COST DISTRIBUTION

ESCROW ACCOUNT Rohini OCP Project Area (Ha) 255.68 Escrow amount per Ha for OC project as on Aug, 2009 (in Rs Lakhs) 6 Corpus Value based on Aug, 2009 rate (in Rs. Lakhs) 1534.08 WPI as on Aug, 2009 129.6 WPI as on April, 2018 182.3 Current value of Corpus (in Rs. Lakh) 2158.18 Amount provided till 01.04.18 (in Rs. Lakh) 2205.35 Balance Corpus for which provision is to be made as on 01.04.18 (in Rs. Lakh) nil Total Mine closure cost (in Rs Lakhs) 2158.18

ACTIVITY % OF TOTAL MINE Remarks CLOSURE COST OB Dump Reclamation Handling/ Dozing of OB Dump and back filling 71 Throughout the life of the mine Bio-reclamation including soil spreading, 0.4 Throughout the life of the mine plantation and post care Landscaping Landscaping of the open space in lease hold 0.3 Throughout the life of the mine area for improving its esthetic Plantation Plantation around the quarry area and in 0.2 Throughout the life of the mine safety zone Plantation over the external OB Dump 0.02 Throughout the life of the mine Entrepreneurship Development (Vocational/ 0.26 Throughout the life of the mine skill development training for sustainable income of affected people Miscellaneous and other mitigative measures 2 Throughout the life of the mine TOTAL (1) 74.18 Dismantling of Structures To be included in final mine closure plan Service Buildings 0.2 Residential Buildings 2.67 Industrial structures like CHP, Workshop, field 0.3 sub-station etc. Permanent Fencing of mine void and other To be included in final mine closure dangerous area plan Random rubble masonry of height 1.2 metre 1.5 including levelling up in cement concrete 1:6:12 in mud mortar Grading of highwall slopes To be included in final mine closure plan Levelling and grading of highwall slopes 1.77 OB Dump Reclamation Handling/ Dozing of OB Dump and back filling 17.66 17.66% for final mine closure

Plantation Plantation over cleared area obtained after 0.5 To be included in final mine closure dismantling plan Post Closure Env Monitoring/ testing of For three years after mine closure parameters for three years

Air Quality 0.22 Water Quality 0.2 Post Closure Manpower cost for 0.8 To be included in final mine closure supervision plan TOTAL (2) 25.82 GRAND TOTAL (1+2) 100.00