Mining Plan (II Revision) & Mine Closure Plan of BPA ...

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Mining Plan (II Revision) & Mine Closure Plan

of BPA Opencast-II Expansion Project Under Rule 22 (4) of Mineral Concession Rules, 1960

MVK-6 Inc. Block- 1.81 Sq.Km, & Goleti-1 & 2 Inc. Block-1.25 Sq.Km Dorli-Bellampalli Coal Belt

Godavari Valley Coal Fields Abbapur (Village) & Tandur (Mandal)

Adilabad District (T.S)

Volume-I & II (Text & Annexures) & (Plates)

The Singareni Collieries Company Limited (A Government Company)

P.O. Kothagudem - 507 101. Dist. Khammam State: Telangana

TARGETED CAPACITY OF 1.00 MTPA May, 2016

K.Saibabu, Dy.General Manager Recognised Qualified Person

Ref. No.34012/ (12)/2011-CPAM, dated: 09.11.2011 Department of Project Planning

P.O. Kothagudem – 507 101 Khammam District, Telangana

The Singareni Collieries Company Ltd.

Mining Plan (II Revision) & Mine Closure Plan of BPA OC-II Expansion Project

1.1

Chapter 1

INTRODUCTION

1.1 General

The Singareni Collieries Company Ltd (SCCL) has been exploiting coal for more than 120 years. Out of 470 Km long Pranahita Godavari valley Coal field, the 350 Km sector is lying mostly in the South Indian State of Telangana. Over the years, the Company had expanded its exploitation activities in Adilabad, Karimnagar, Warangal and Khammam districts of Telangana. Singareni Collieries Company Limited is operating 32 Underground Mines and 16 Opencast Mines. These Mines are located in 4 districts of Telangana namely Khammam, Adilabad, Karimnagar and Warangal. For administrative convenience, coal mines in Adilabad District are grouped under one region called Bellampalli region, mines in Karimnagar and Warangal Districts are grouped under Ramagundam region and the mines in Khammam District are grouped under Kothagudem region. Coal mining is in progress in Godavari Valley Coal Field since 1889. Hyderabad Deccan Company incorporated in England had acquired the mining rights in 1886 to exploit all the coal in the State of Hyderabad. This Company was renamed as The Singareni Collieries Company limited in 1921.

In the year 1945, the State of Hyderabad (it was not part of Indian Union), the Nizam’s dominion had taken over Singareni Collieries by acquiring all the stocks and continued to mine coal from entire Godavari Valley Coal Field. Since then, SCCL has been mining coal in the Godavari Valley Coal Field. Thus the GVCF became the personal property of Nizam. In 1948 with annexation of Nizam’s dominion into Union of India, SCCL became a Government Company. From 1960, Govt. of India participated in Equity with 49% shares.

In 1972&1973, coking and non-coking coal mines respectively of Private Operators (except the captive mines of IISCO, TISCO, and DVC) were nationalized and subsequently brought under Coal India Limited with a view to mine coal from all other coal fields, other than Godavari Valley Coal Field. Since then Ministry of Coal has been referring to Godavari Valley Coal Fields as command area of SCCL.



1.2

The mining rights of SCCL cover a stretch of 350 km, in Godavari Valley with proved coal reserves of about 10073.54 Million tonnes as on 1.04.2014.

SCCL has taken up the following programme to rise the production.

1) Reconstruction of existing mines to achieve optimum production by intermediate and high technology.

2) Improving the productivity in the existing mines by improving the utilization of the equipment.

3) Opening of new mines in the adjoining/superjacent areas/seams for higher production.

4) Adopting opencast working wherever possible for high rate of production. 5) Conversion of shallow underground workings to opencast method for

extraction of balance coal reserves. 6) Extension of the existing opencast workings to further dip side up to optimum

level. In the above context, now it is proposed to enhance the annual production capacity of BPA OC-II Expansion Project from the present level of 0.4Mt to 1.00 Mt.

The total availability of coal from the existing projects, projects under implementation and approved projects is inadequate to meet the total demand and a substantial gap remains unfulfilled. The following statement reveals the gap and justifies planning of additional new projects and reconstructing the existing Projects.

Figures in Million Tonnes

Sl.No Year 2013-14 2014-15 2015-16 2016-17 1 Demand 59.40 63.70 71.30 73.50 2 Production 50.47 55.00* 56.10* 57.10* 3 Gap -8.93 -8.60 -15.20 -16.40

*Projected production. The production projections at the terminating year of XII Plan can only be met by starting new mines and by reorganizing & reconstructing some of the existing mines to step up production with advanced technology.



1.3

1.2 Present proposal

The present proposal is to enhance the annual production capacity of BPA OC-II Expansion Project from the present level of 0.4Mt to 1.00 Mt without change in the extent of land required for the project.

Salient features of the Earlier approved Mining Plan Vs Present Proposal are as follows:

Sl. No.

Description Approved Mining Plan Proposed Mining P lan

1 Name of the Mining Plan Revised Mining Plan of BPA Opencast-II Expansion Project

Mining Plan (II Revision) & Mine Closure Plan of BPA Opencast-II Expansion Project

2 Total Project Area (Ha) 191.98 191.98

3 Type of land (Ha) Forest Land - 117.63 Non Forest Land –74.35 Total - 191.98

Forest land - 137.40* Non Forest Land – 54.58 Total - 191.98

*Note: As per the earlier approved mining plan the requirement of forest land was 117.63 Ha, but on verification of legal status of the land with forest dep., it was found that the forest land involved is 137.40 Ha. The extent of non forest land is reduced to 54.58 Ha. The total land required for the project (191.98 Ha) is not changed.

5 Geological Block MVK-6 Inc. Block-181.5 Ha & Goleti-1 & 2 Inc. Block- 125 Ha

No Change

6 Geological Reserves (Mt) 7.69 No Change

7 Extractable Reserves (Mt) 7.00 No Change

8 Reserves already extracted by OC (Mt)

Nil 2.40 (upto 2011-12)

9 Balance extractable Reserves (Mt)

7.00 4.60

10 Total Overburden(M.Cu.m) 45.51 No Change

11 Average Stripping Ratio (tonnes/Cum)

6.50 No Change

12 OB already removed (M.Cu.m)

Nil 9.61



1.4

13 Balance Overburden(M.Cu.m)

45.51 35.90

14 Rated Capacity (MTPA) 0.40 1.00

15 Balance Life of project (yrs) 18 5 years from 2015-16

16 Minimum depth of Quarry (m)

Block-C (15m), Block-B Ext. (10m), Block-D (8m)

No Change

17 Maximum depth of the quarry (m)

Block-C (115m), Block-B Ext. (100m), Block-D (130m)

No Change

18 R&R involved Two villages No Change

19 Seams present 3 seams (Top seam, Middle Seam & Bottom Seam)

3 seams (Top seam, Middle Seam & Bottom Seam)

20 Seams workable Block-C: Middle Seam & Bottom Seam, Block-B Ext: Middle Seam, Block-D: Top seam, Middle Seam & Bottom Seam

No change

21 Technology Opencast Mining with shovel-dumper combination

No change

22 Extraction of Overburden by

Out sourcing No Change

23 Extraction of coal (HEMM) Departmental Departmental

1.3 Details Of End Use Plants

SCCL is doing commercial mining and supply the coal to the consumers as per the allotment of the MOC for power, cement, steel utilities through fuel supply agreements. Details of coal supplied by SCCL to major FSA customers for the year 2013-14 are given below:

Sl.No. Name of unit FSA (in L.T)

Supplied (in L.T)

1 APGENCO 200.00 171.61 2 PARLI, MAHAGENCO 21.00 11.48 3 KPCL (RAICHUR) 28.00 22.39 4 NTPC RGM 102.00 108.24 5 OTHER NTPC UNITS & BELLARY 35.00 5.05 TOTAL POWER 386.00 318.77 6 CEMENT MAJOR 58.00 46.70 7 CEMENT MINI 2.00 2.66 8 CAPTIVE 34.50 25.46



1.5

9 SPONGE IRON 11.00 3.93 10 HEAVY WATER PLANT 6.00 5.21 11 OTHERS 22.50 22.74 12 E-AUCTION (SPOT) 40.00 53.45

TOTAL 560.00 478.92 1.4 Mode of Dispatch of the Coal

A pit head CHP is under construction at Block-D of BPA OC-II expansion project. This CHP will handle the coal from the project. A coal handling plant of 5.0 Mt capacity is being set up at Rebbana railway station and expected to be completed within a year. The coal from the BPA OC-II expansion project will be transported to Rebbana CHP by road. From there coal will be loaded in to rakes and will be dispatched to customers as per the FSA. Further part of coal produced will be dispatched to private customers through pit head dispatch.

1.4.1 Coal Washing

BPA OCP-II Expansion Project planned to produce G-8 / G-9 grade coal. No beneficiation is proposed as the grade of the coal produced can be used directly by consumers.

*****



2.1

Chapter 2

DETAILS OF EARLIER APPROVAL OF MINING PLAN

BPA OC-II expansion project is located in the Dorli-Bellampalli coal belt. Earlier Mining plan for “Tandur Mining Lease” was approved in the year 1989 covering an area of 16286 Ha in which BPA OC-II expansion project exists. (A copy of approval letter enclosed as Annexure: 1). This mining lease area consists of other coal Blocks namely Khairagura Block, Abbapur Block, MVK-1,2,3,5 Incline blocks and part of Shanthikhani block of Bellampalli area.

In the year 2006 the mining plan was revised and approval was obtained with the name of Revised Mining Plan of BPA Opencast-II Expansion Pr oject (Tandur Mining Lease), vide reference letter No: 13016/6/2006-CA-II, Dated: 03/07/2006. (A copy of approval letter enclosed as Annexure: 1). The details of mining plan approved in the year 2006 are given below.

� Geological Reserves: 7.69 Mt, � Extractable Reserves: 7.00 Mt � Maximum depth: Block-C (115m), Block-B Ext. (100m), Block-D (130m) � Quarry area: 90.51Ha. � Total land required: 191.98 Ha. � Production capacity : 0.4 MTPA � Life of the project: 18 years.

2.1 Deficiencies, if any that existed in the appro ved mining plan and their rectification proposals.

There were no deficiencies existed in the earlier approved mining plan.

2.2 Compliance of conditions imposed if any with a pproval of the mining plan is to be annexed in a tabular format.

No conditions were imposed with approval of the mining plan.



2.2

2.3 Salient features of the approved Mining Plan v is-à-vis that during actual operation.

Comparative statement showing the salient features of the earlier approved mining plan and the present proposed plan is tabulated below:

*Note: On verification of legal status of the land with forest department it was found that 137.40 Ha of forest land is involved out of 191.98 Ha of total land. The non forest land got reduced to 54.58Ha. However there is no change in the total land required for the project. Further stage-II clearance was also obtained for 137.40 Ha vide Lr No: F.No.F(C)A/16.1/74/AP/MIN dt.06-07-2006 & F.No. 8-21/2009-FC dated: 04-09-2014.

The rated production as per approved mining plan Vis a Vis actual operation is given in the following table:

Year Targeted Production (M Tonnes)

Achieved Production (Tonnes)

2006-2007 0.40 0.21 2007-2008 0.40 0.78 2008-2009 0.40 0.74

Description Earlier Approved Mining plan ( Revision I) Present proposal

Name of the Mine BPA OC–II Expansion Project (Tandur Mining Lease)

BPA Opencast-II Expansion Project (II Revision)

Mini Depth of workings(m) Block-C (15m), Block-B Ext. (10m), Block-D (8m) No Change

Max Depth of workings (m) Block-C (115m), Block-B Ext. (100m), Block-D (130m) No Change

Total Area of excavation(Ha) 90.51 No Change Total Project area (Ha) 191.98 No Change Forest land involved (Ha) 117.63 137.40* Geological Reserves (Mt) 7.69 No Change

Extractable Reserves (Mt) 7.00 No Change

Rated capacity (MTPA) 0.40 1.00

Life of the Mine 18 years 11 years (Including balance life of 5 years)

No of External Dump yards 1, Abbapur Dump yard No Change



2.3

2009-2010 0.40 0.36 2010-2011 0.40 0.29 2011-2012 0.40 0.03

Total 2.40 2.40 2.4 Why the Revision in Mining Plan Required

It is proposed to enhance the rated production capacity from 0.40 MTPA to 1.00 MTPA with the optimum utilisation of equipment, by rescheduling the OB removal activity and dumping sequence to reduce the demand and supply gap. Hence the revision in mining plan is required.

The total availability of coal from the existing projects, projects under implementation and approved projects is inadequate to meet the total demand and a substantial gap remains unfulfilled. The following statement reveals the gap and justifies planning of additional new projects and reconstructing the existing projects.

Figures in Million Tonnes

Sl.No Year 2013-14 2014-15 2015-16 2016-17 1 Demand 59.40 63.70 71.30 73.50 2 Production 50.47 55.00* 56.10* 57.10* 3 Gap -8.93 -8.60 -15.20 -16.40

*Projected production. The production projections at the terminating year of XII Plan can only be met by starting new mines and by reorganizing & reconstructing some of the existing mines to step up production with advanced technology.

*****



3.1

Chapter 3 LOCATION, TOPOGRAPHY & COMMUNICATION

3.1 Location & Communication

The BPA opencast-II expansion project is located in the North-Western side of the Godavari valley coalfields (Dorli–Bellampalli Coal belt). The area is covered in survey of India toposheet No. 56 M/8 and is bounded by North latitudes 19012'34" to 19012'56" and East longitudes 79020'53" to 79021'41". The BPA OC-II expansion project is an existing project, which is in operation since 2006-07 with a rated capacity of 0.40 MTPA covering a quarry area of 90.51Ha. The area falls in the reserve forest area in Tandur mandal of Adilabad district of Telangana. It is covered under the Tandur Mining Leasehold of the SCCL. The plan showing the Location of the project is enclosed in the Plate No: I.

BPA opencast-II expansion project is a part of the Bellampalli area group of mines. In this area 4 more coal mines are in operation namely Dorli OCP-I, Dorli OCP-II, Khairagura OCP and Goleti No: 1A Incline. Khairagura OCP, Dorli OCP-I and Dorli OCP-II are located in North-Western direction at a distance of 12 Km, 18 Km and 22 Km respectively. Further Goleti No.1A Incline under ground mine is located at a distance of 1.5 Km. in North-Easterly direction to the mine. All the mines of the Bellampalli area are well connected to Goleti Township by well laid asphalt road. The Goleti Township is connected with Hyderabad (State capital which is about 300 km), Adilabad (District head quarters which is 250 km. away) and Bellampalli (Nearest town located at a distance of 23 km) by all-weather asphalt roads. Asifabad road railway station is the nearest railhead located at a distance of about 11 km in North-East side of the block on the Kazipet – Balharshah railway line of the South central railway.

3.1.1 Availability of Power Supply, Water Supply et c.

The water seepage/rain water in the mine is collected at identified sumps and is pumped to surface by means of suitable capacity of pumps. The water required for industrial purpose such as washing, spraying, etc. is met from the pumped out water.

The source of power for the project is from 132 KV sub-station, Mandamarri. This sub-station is having sufficient spare capacity to meet the power requirement of



3.2

expansion capacity. One overhead transmission line of 33 KV originating from this sub-station is feeding power to BPA OC-II expansion project.

3.2 PHYSIOGRAPHY

Block-C : This block forms a part of undulatory valley lying between Madaram gutta, Bejal gutta and Madi gutta hill ranges. The Naspur nallah forms the main drainage, traversing right across the block from south to north and north east before joining Pulikuntala nallah. This Nallah was diverted and the coal extraction in this block is completed. Block-B Extension : This is a gently rolling plain terrain sloping towards east with the topographic elevation varying from 293.45 m above mean sea level (MSL) in the north central part to 301.66 m above MSL in the western part. Block-D : This is a high ground on its southern side sloping to the three sides. Sonapur gutta (hillock) of about 55m above ground level is located in the north-eastern part of the property. The general elevation of this block varies from 245m above MSL in the north-eastern part to 360m above MSL in the south-eastern part.

3.2.1 Drainage Pattern

The area is drained by two ephemeral streams i.e., Sonapur nallah (Block-D) and Narsapur nallah (Block-C) flowing in a northeasterly direction. Finally, the Narsapur Nallah joins Pulikuntala nallah. Another nallah (Beijal nallah) flows in the western position of Block-B Extn (Beside Abbapur village). The water flows towards north and joins the Sonapur nallah at Block-D. The basin slope of this area is about 15m/km. Two hills Sonapur gutta (to north-east of Block-D) and Bheemanna gutta (to south-east of Block-C) influence the drainage system of the area. Note: The Topo plan showing the entire surface features with in 10 km radius of the project boundary is enclosed as plate No.II.

3.2.2 Rainfall Data

The annual rainfall of this area monitored from 1996 to 2012 at Tiryani, the nearest gauging station, infers annual rainfall to vary widely from 681.1 mm (1991) to 1192.8mm (2012) with an average of 951.00 mm. The maximum daily rain fall during this period is 170 mm (5th August 2006) and the maximum monthly rain fall is 424.4



3.3

mm (Aug, 2000). The details of monthly rain fall data the Tiryani gauging station is shown in the table no: 3.1 at the end of this chapter.

3.2.3 Highest Flood Level

Block-C

The diverted Narsapur nallah is the nearest stream to the Block-C. The observed HFL of is 983.4.

Block-B Extension:

A nallah namely Beijal nallah flowing in the western position of Block-B Extn (Beside Abbapur village). The RL of observed maximum water level of the nallah is 992.

Block-D:

A nallah namely Sonapur nallah is flowing across the Block-D. it is proposed to ivert the nallah along the periphery of the block. The observed HFL of the nallah is 972.27.

3.2.4 PWD Roads and Railway lines

Goleti township is the nearest township to this project located at a distance of 5 Km. in north-easterly direction. The Goleti Township is connected both with Hyderabad (State capital which is about 300 km), Adilabad (District head quarters which is 250 km. away) and Bellampalli (Nearest town located at a distance of 23 km) by all-weather asphalt roads.

Asifabad Road Railway Station is the nearest railhead located to the east of the block at a distance of about 11 km. on the Kazipet–Balharshah railway line of the south central railway.

3.3 Ownership and Occupancy of land

The total land required for the project is 169.22 Ha. Additionally the land requirement for R&R is 22.76 Ha as given below:



3.4

Block Forest land (Ha) Non-Forest land (Ha) Total (Ha) Block-B Extn. 42.84 28.56 71.40 Block-C 28.62 3.26 31.88 Block-D 65.94 65.94 Sub Total (Mine take area)

137.40 31.82 169.22

R&R 22.76 22.76 Total land required 137.40 54.58 191.98

3.4 Important Surface Features and Major Diversions involved

There are no important surface features such as archaeological monuments or tourist spots in the buffer zone as well as core zone of the project.

Major Diversions Involved

Block-C:

Diversion of Narsapur Nallah:

The Narsapur nallah which was flowing across the Block-C was diverted along the eastern periphery of the quarry before starting of the mining operations in the Block-C. A bund was also constructed along the diverted nallah around the quarry.

Diversion of Road:

A road , Connecting Goleti town ship to Madaram, was passing across the Block-C was diverted along the northern periphery of the Block -C before the commencement of mining operations.

Block-B Extension:

Diversion of Beijal Nallah:

A nallah namely Beijal nallah is flowing through the Block-B extension is proposed for diversion along the western periphery of the block. It is also proposed to construct a bund against the diverted nallah. The length of the proposed diversion is 1.2 KM.



3.5

Diversion of Road:

A public road to Beijala village is passing in the western periphery of the Block-B Extension. It is proposed to divert the road along the western side of the quarry. The length of the diversion required is 2.3 Km.

Block-D:

Diversion of Sonapur Nallah:

A seasonal nallah namely Sonapur nallah is passing across the Block-D property. It is proposed to divert the nallah along the periphery of the block. Sonapur gutta is located adjacent to the block on the north-eastern side. It is therefore planned to construct a drain all along the periphery of the block (connecting the diverted Nallah) to prevent sudden inrush of water. The length of the proposed diversion is 3377m.

Table No. 3.1: MONTHLY RAINFALL DATA – TIRYANI

MONTHLY RAIN FALL DATA (in millimetres)

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total 1996 0.0 0.0 0.0 0.0 0.0 47.0 335.0 305.0 230.0 89.0 32.0 0.0 1038.0 1997 0.0 0.0 15.2 76.7 7.0 95.6 146.3 173.5 184.6 135.3 26.0 19.6 879.8 1998 3.8 38.1 13.0 5.0 52.2 189.0 199.4 246.8 274.0 37.0 24.0 0.0 1082.3 1999 0.0 32.2 0.0 0.0 48.0 197.4 108.8 169.7 80.2 44.8 0.0 0.0 681.1 2000 0.0 0.0 0.0 25.0 54.2 247.6 275.2 424.4 111.4 0.0 0.0 0.0 1137.8 2001 12.2 0.0 6.4 40.8 0.0 119.2 138.4 371.0 28.3 116.6 0.0 0.0 832.9 2006 0.0 0.0 25.0 31.0 7.3 62.0 197.8 348.8 225.2 16.0 0.0 0.0 913.1 2011 0 52 0 2 0 98.8 257.2 220.6 168.6 2.2 0 0 801.4 2012 19 0 0 0 0 81.2 341.6 328.6 322.8 63.2 36.4 0 1192.8

Mean 3.9 13.6 6.6 20.1 18.7 126.4 222.2 287.6 180.6 56.0 13.2 2.2 951.0 Maximum Annual Rail Fall (2012) 1192.8 Minimum Annual Rain Fall (1999) 681.1

Maximum Monthly Rain Fall (Aug.2000) 424.4 Maximum Daily Rain Fall (Aug-5-2006) 170.00

*****



4.1

Chapter 4

EXPLORATION, GEOLOGY, SEAM SEQUENCE, COAL QUALITY AND RESERVES

4.1. General

Pranahita-Godavari valley coal field is a NNW-SSE trending basin belt on the Precambrian platform. It is one of the principal Gondwana basins in India and follows the course of Pranahita and Godavari rivers over a strike length of 470 km. The southern sector lying in the state of Telangana is referred as Godavari valley coal field covering an area of 17000 sq.km. The coal bearing Barakar formation mostly occurs along southern peripheral parts of the basin. The continuity of the seams is broken and missing at places due to faulting and therefore different coal bearing areas occurring in isolated pockets and these are generally treated as separate coal belts. The Dorli-Belampalli coal belt is about 60 km. long in strike forms an integral part of Godavari valley coalfield and is located in the north-western end of the coalfield.

The BPA OC-II expansion project consists of three mining blocks namely Block-C, Block-B extension and Block-D. These three blocks covers an area of 90.51 Ha and are located in the North-Western extremity of the Godavari valley coalfields. The area is covered in Survey of India Toposheet No. 56 M/8 and is bounded by north latitudes 19012'34" to 19012'56" and east longitudes 79020'53" to 79021'41".

4.1.1. Details of Exploration

The exploration was carried out in MVK-6 Inc block from the year 1972-82 of which Block-C , Block-B extension forms a part. Explorati on of Goleti-1&2 Incline blocks was carried out in the year 1972-77 of which Block-D forms a part. In this chapter the details of the boreholes that forms part of Block-C, Block-B extension and Block-D are discussed.

Block-C (MVK-6 Incline Block):

The detailed exploration of the Block-C (part of MVK-6 Incline Block) was done by exploration department of S.C.Co.Ltd during the period 1975 to 1982. Total 18 bore holes were drilled with a total Metreage of 1692.75. Out of 18 boreholes, 17 boreholes amounting to 1599.77 m fall within the Block-C area of about 0.218 Sq.Km and the density of the boreholes drilled in this block works out to be 77.98 per Sq.Km.



4.2

Block-B Extension:

The detailed exploration of the Block-B extension was done by exploration department of SCCo.Ltd during the period 1976 to 1988. Total 15 Bore holes were drilled with a total Metreage of 1434.64. Out of 15 boreholes, 10 boreholes amounting to 968.62 m fall within the block area of about 0.315 Sq.Km and the density of the boreholes drilled in this block works out to be 32 per Sq.Km.

Block-D (Goleti-1 & 2 Inc. Block):

The detailed exploration of the Block-D was done by exploration department of SCCo.Ltd during the period 1972 to 1977. Total 22 Bore holes were drilled with a total Metreage of 2045.95. Out of 22 boreholes, 19 boreholes amounting to 1735.50 m fall within the mining block area of about 0.280 Sq.Km and the density of the boreholes drilled in this block works out to be 67.85 per Sq.Km.

4.1.2. Details of seam wise bore holes intersection :

Following are the details of seam wise bore holes intersections within the mining area of the Block-C, B Ext and D.

Seam Area(Sq.Km) No. of BH intersected

Bore hole Density (Bh/Sq.Km)

Block -C Middle Seam 0.105 11 104.76 Bottom Seam 0.123 15 122.05

Total Block 0.218 17 77.95 Block -B Ext Middle Seam 0.244 09 36.88 Total Block 0.281 10 35.58 Block -D Top Seam 0.281 13 46.20 Middle Seam 0.327 16 48.96 Bottom Seam 0.350 18 51.43 Total Block 0.406 19 46.80 Grand Total (all Blocks)

0.905 46 50.82

4.1.3. Requirement of further exploration:

The total area of the Blocks and all Coal seams has been explored in detail, so there is no requirement of further exploration.



4.3

4.2. Regional Geology of Dorli – Bellampalli Coal belt

The development of coal seams and the general trend of the Gondwana sediments in the Dorli-Bellampalli coal belt area are in broad conformity with the regional setup of the Godavari Valley Coalfield. The Stratigraphic succession of Dorli-Bellampalli Coal Belt is as given below:

STRATIGRAPHIC SUCCESSION IN DORLI–BELAMPALLI COALBE LT

Geological Age Group Formation General Lithology Thickness

(m) Recent Soil cover and alluvium Up. Cretaceous

Traps Basaltic flows unconformable 65.00

Up. Permian to early Triassic

Upper Gondwana

Upper Kamthi

Ferruginous sandstone with clays 400.00

Unconformity

Permian Lower Gondwana

Middle Kamthi

Alternate bands of sandstones and shales / clays.

1000.00+

Lower Kamthi

Sandstones with subordinate shales and coal seams.

150.00

Barren Measures

Coarse to pebbly felspathic sandstones with subordinate clays

450 +/- 25

Barakar Dominantly sandstones with few shales and regionally persistent coal seams.

250 +/- 25

Talchir Greenish sandstones, clays / shales, conglomerates and boulder beds.

200.00

Unconformity

Proterozoic Sullavai/ Pakhal

White to brown sandstones, shales, phyllites and dolomites / limestone.

4.3. Local Geology

The BPC OC-II Expansion Block carved out of three geological Blocks namely, MVK-6 Incline Block (Block-C), Block-B Ext. & Goleti 1 & 2 Incline Block (Block-D). The details of the same are as follows:

4.3.1. Block-C (MVK-6 Incline Block)

The Block-C (MVK-6 Incline Block) of the BPA OC-II expansion project forms the north-western extremity of the Dorli-Bellampalli belt and geologically forms an integral part of it.

The Kamthi and Barakar formations are present with-in the Block-C (MVK-6 Incline Block) while Talchirs are exposed further south-west. The coal bearing Barakar



4.4

formations are light brownish to grey in colour and are of medium to coarse grained sandstones. A maximum thickness of 280 m of Barakar strata was intersected in the boreholes.

Stratigraphic Sequence

The stratigraphic sequence is ascertained based on the geological mapping subsurface data established through boreholes drilled within the block. The sequence is as mentioned below:

Age Formation Strata Upper Permian Kamthi

(140m+) Fine to coarse grained brown sandstone and variegated clays and ferruginous shales

Lower Permian Barakar (280m) Medium to coarse grained gritty white and grey sandstones with intercalations of grey clays, carb. Clays, shales and coal seams.

Upper Carboniferous Talchir (17m+) Medium to fine grained sandstones, silt stones, clays and olive green shales.

-------------------Unconformity---------------------- Precambrian Salluvai Grey limestones, buff coloured sandstones, shales etc.

i. Structure

The general trend of the coal formation is north 60 o to 65o west and South 60 o to 65o east with corresponding north easterly dips varying from 15 o to 21o i.e., gradient ranges between 1 in 2.71 to 1 in 3.8. A total of 3 faults have been delineated based on the floor contours drawn for middle and bottom seams with throws ranging from 5 to 55 m.

Description of Faults

Fault No Type Trend of

fault

Throw amount (m)

Throw direction

Linear extent (m)

Evidences of faulting

F4 Oblique NNW-SSE 5 SSW About 500m

Difference of floor levels of coal seams in between BH. Nos. 77 & 83

F5 Oblique NNW-SSE 15-55 SSW About 2200m

Difference of floor levels of coal seams in between BH. Nos. 77&83, 64 & 6, 97 & 8

F6 Oblique NNW-SSE 15-26 NNW About 1700m

Missing of Seams in Bh.NO. 59

iii) Characteristics of the Lithological units

Roof and Floor Rocks of Bottom Seam:



4.5

The roof of the Bottom seam is generally characterised by medium grained sandstones and floor by fine to medium grained sandstone. The parting between the bottom seam and middle seam varies from 3.35m to 13.11m.

Roof and Floor Rocks of Middle Seam:

The borehole data indicates that the immediate roof of the Middle seam comprises of medium to coarse grained sandstone with intercalations of thin clay and shale bands ranging in thickness from 0.31 to 1.22m. Medium to coarse grained sandstone with clay and shale intercalations overlie this horizon. The floor of the seam is generally fine grained micaceous and carb sandstone.

iv. Details of Coal Seams

The detailed exploration of the Block-C has established existence three coal seams namely, Bottom seam, Middle seam and II seam in ascending order. The II Seam largely serves as marker bed having a large proportion of dirt bands and less of coal bands. II Seam has not developed into a workable horizon in most of the mine take area in Block-C. Hence II seam is not considered for extraction and not assessed.

The details of coal seams, their thickness, lateral extent and fixing up of the incrop are based on sub surface data. The probable incrop positions of the seams have been fixed at 15m-25m depth line of the respective seams. The disposition of the coal seams has been worked out based on the interpreted geological cross sections and floor contour plans. The Geological cross sections and floor contour plans of the Block are presented in plate No. VII and Plate No.VI-A to VI-C respectively.

The sequence of coal seams worked out through boreholes drilled within the block and the succession of coal seams is as follows:

Seam Lithology General range of

thickness (m) Seam Parting

Medium to coarse grained sandstone with clay and shale intercalations

No.2 Coal seam with Carb. Shale and clay intercalations and intermittent coal

1.22 - 4.57

Parting Medium to coarse grained sandstone with intercalations of thin clay and shale bands ranging in thickness from 0.31 to 1.22m.

45.41- 68.38

Middle (Salarjung

Coal Seam with thin carb. Shale bands 2.74 - 10.98



4.6

seam) Parting Medium grained sandstone 3.35 - 13.11 Bottom (Ross Seam)

Seam mostly devoid of dirt bands 1.98 - 5.19

Parting Medium to fine grained sandstones with tendency to become finer and silty towards the base

120.00

Bottom Seam: The Bottom seam is developed over most part of the block and was intersected in 15 bore holes. The depth of intersection varies from 8.23m (BH no84) to182.57m (BH NO.8). The thickness ranges from 1.98m to 5.19m. The Bottom seam of the Block-C can be compared to Ross seam of the BPA area.

Middle Seam:

The Middle seam is the persistent coal horizon underlain by Bottom seam with a parting varying from 3.35m to13.11m in the block and was intersected in 11 bore holes, with a thickness varying 2.74m to 10.98m. The minimum & maximum depths of inter section is 14.32 m (BH No 53) and 167.03m (BH No.8) respectively. The Middle seam of the Block-C can be compared to Salarjung seam of the BPA area.

v. Quality of the Coal Seams with Grades

The quality parameters of the Coal Seams of the Block-C are shown below

Seam

Moisture (%)

Ash (%)

Avg.GCV (K.Cal/Kg)

Avg. Grade

Middle Seam 3.7-8.8 23.9-29.4 5081 G-8 Bottom Seam 4.6-9.6 14.7-30.2 5396 G-7

4.3.2. Block-B Extension

The Block- B Extension of the BPA OC-II expansion project forms the North-Western extremity of the Dorli-Bellampalli belt and geologically forms an integral part of it. The Barakars are the only coal bearing formation of this block and are well exposed throughout the area.

i. Stratigraphic Sequence



4.7

The stratigraphic sequence of the block is established from the surface mapping and sub-surface information. The sub-surface data is ascertained from the boreholes drilled within the block. Stratigraphic sequence of Block-B Extension Block:

Age Formation Lithology Thickness (m) Recent Soil Cover 1.52-6.10 Middle Permian

Barren Measures

Green/Greenish Grey to Grey medium to coarse grained SST. with variegated clays

Occurs beyond the dip side limit of the block.

Lower Permian

Barakar Medium to coarse grained white Grey white sandstone with intercalations of clays, shales and coal seams

130+

Upper Carboniferous

Talchir FMg. greenish sandstones, siltstones, clays, shales and pebble beds

8+

The borehole data has established presence of single beam i.e., Middle seam. The overlying II seam and underlying Bottom seams are not having persistent thickness and hence have been ruled out from the purview of Geological assessment. The middle seam incrop has been established from 10m from the surface.

ii. Structure The Block-B extension covering an area of 0.315 Sq. Km. extends over a strike length of 1.2 Km. with an average width of 300m. The mining are of the Block-B Extension is 0.2806 Sq.Km. The coal seam is found to trend in WNW-ESE direction with a gradient of 1 in 3.2 to 4.0. Description Of Faults The property is affected by four faults viz.F1-F1, F4-F4, F5-F5 and F6-F6 with throws ranging form 5 to 120m. The faults F1-F1 and F4-F4 form as block boundaries in South East, while F6-F6 forms as the northern boundary. Fault F5-F5 is situated in the north-western part of the block.




4.8


The roof of the Middle Seam comprises soil cover, medium to coarse grained sandstones, clay, shale with bands of carb. Shale, shaly coal and coal. The thickness of the strata varies from 17.00m to 90.83m. The immediate floor of the seam comprises of medium to coarse grained grey sandstones.


The borehole data has established presence of three coal seams namely Bottom seam, Middle seam and II seam in ascending order. The overlying II seam and underlying Bottom seams are not having persistent thickness and hence have been ruled out from the purview of Geological assessment. The middle seam incrop has been established from 10m from the surface. Middle Seam:

The middle seam varies in thickness from 4.58m to 7.73 m. it has intersected in 10 nos of bores drilled within the block. The minimum & maximum depths of inter section is 17.0 m and 90.83m respectively. The moisture and ash percentage ranges between 5.20 to 7.11 and 26.14 to 42.40 respectively. The Geological cross sections and floor contour plans of the Block are presented in plate no. VII and plate no.VI-A to VI-C respectively.


The quality parameters of the Coal Seams of the Block-B extension are shown below

Seam

Moisture (%)

Ash (%)

GCV (K.Cal/Kg) Avg.GCV

(K.Cal/Kg) Avg.

Grade

Middle Seam 5.20-7.11 26.14-42.40 4271-5326 4646 G-9

4.3.3. Block-D (Goleti 1 & 2 Inc. Block)

The Block-D of the BPA OC-II expansion project forms the North-Western extremity of the Dorli-Bellampalli belt and geologically forms an integral part of it. In the block under reference, Barakar and Barren measure formations are exposed. The Barakar formation comprises of fine to coarse grained sandstones with thin clay / shales and workable coal seams. The Barren measure formation comprises mainly very coarse grained to pebbly grey white to greenish grey sandstone and variegated clays.



4.9

i. Stratigraphic Sequence

Based on the subsurface data established through boreholes drilled within the Block-D and supported by surface geological mapping the formations as well as the coal seams are found to trend in north-northwest to south-south east direction and dipping towards northeast. The sub-surface data reveals that the coal seams are present within the Barakar formation in top 150m horizon i.e., upper member of Barakar. This strata predominantly consists of grey-white sandstones and few workable coal seams. The sequence of coal seams occurring within the Block-D is given below:

SEQUENCE OF COAL SEAMS IN BARAKAR FORMATION OF BLOC K-D

Seam Formation Thickness (m) B A R R E N M E A S U R E S Strata Predominantly sandstones with few shales

and thin impersistent coal bands 42 – 50

II Seam Shaly coal seam 0.91 - 3.66 Parting Predominantly sandstones 55 – 60 Top Seam Coal with bands 1.22 - 3.57 Parting predominantly coarse grained sandstones 1.52 - 5.48 Middle Seam Coal with bands 1.07 – 6.55 Seam Parting Mainly sandstones 7.61 – 15.45 Bottom Seam

Coal with few bands 2.13 – 5.19

Strata Medium to coarse grained sandstones 110 – 120 T A L C H I R F O R M A T I O N

ii. Structure

The Block-D covering an area of 0.4064 Sq. Km. extends over a strike length of 1300m. with an average width of 400 m. The coal seam is found to trend in NNW-SSE direction with a gradient of 1 in 3.17 to 4.40.



4.10

The structure of the block has been interpreted based on the boreholes data. The Geological cross sections and floor contour plans of the Block are presented in plate no. VII and plate no.VI-A to VI-C respectively. Description of Faults The property is affected by 4 faults viz. with throws ranging from 6 to 240 m. The fault F1-F1 forms as block boundary in Southwest, while 130m depth line forms as the dip side boundary. The details are mentioned in below table:

Fault No

Type Trend of fault

Throw amount (m)

Throw direction

Linear extent (m)

Evidences of faulting

F1 Oblique NNW-SSE 240 SSW About 1500m Boundary fault

F2 Oblique WNW-ESE

22 NNW About 700m Difference of floor levels of coal seams in between BH. Nos 31 & 55

F3 Oblique NNE-SSW 6 SSE About 700m Missing of Seams in Bh.NO. 87 &23 F4 Oblique NNE-SSW 6 NNW About 1000m Missing of Seams in Bh.NO. 27 & 23


Roof and Floor Rocks of Bottom Seam:

The roof of the Bottom seam consists of mainly sandstone having compressive strength varying from 49 kg/cm2 to 106 Kg/cm2 which shows weak to moderately strong strata. The compressive strength for the floor rocks is 135 Kg/cm2, it consists of medium to coarse grained sandstone.


The roof of the middle seam predominantly consists of coarse grained sandstones having compressive strength varying from 26 Kg/cm2 to 176 Kg/cm2, which indicates weak to moderately strong strata.

Roof and Floor Rocks of Top Seam:

The immediate roof of the Middle seam predominantly consists sandstones having compressive strength varying from 59 Kg/cm2 to 265 Kg/cm2 which shows weak to moderately strong strata. The strata above this layer consist of sandstones with few shales and thin impersistent coal bands.



4.11


The detailed exploration of the Block-D has established existence four coal seams namely Bottom seam, middle seam, top seam and II Seam in ascending order. The II seam has been excluded from detailed assessment because of its impersistent nature and inferior quality. The Geological cross sections and floor contour plans of the Block are presented in plate no. VII and plate no.VI-A to VI-C respectively.

Bottom Seam:

This is the bottom most corelatable seam occurringin this block. This seam has been intersected in 18 boreholes, out of 19 boreholes drilled in this block. The minimum and maximum depth of intersection for this seam are 13.72m. (B.H.No.92) and 161.24 m (B.H.No.31) respectively. The minimum and maximum thickness for Bottom Seam are 2.13m and 5.19 m respectively. Middle Seam:

This seam overlies the Bottom seam with a parting varying in thickness from 7.61m to 15.45m. This seam has been intersected in 16 boreholes, out of 19 boreholes drilled in this block. The minimum and maximum depth of intersection for this seam is 7.92m. (B.H.No.54) and 142.64 m (B.H.No.31) respectively. The minimum and maximum thickness for Bottom Seam are 1.07m and 6.55 m respectively.

Top Seam:

This seam overlies the Middles seam with a parting varying in thickness from 1.52m to 5.48m. This seam has been intersected in 13 boreholes, out of 19 boreholes drilled in this block. The minimum and maximum depth of intersection for this seam is 29.87m. (B.H.No.28) and 137.76 m (B.H.No.31) respectively. The minimum and maximum thickness for Bottom Seam is 1.22m and 3.57 m respectively.


The quality of the coal seams of the Block-D are shown below

Seam

Moisture% Ash % Avg.GCV (K.Cal/Kg)

Avg. Grade Min Max Min Max

Top Seam 3.40 9.00 24.20 42.25 5131 G-8 Middle Seam 2.90 8.50 20.00 37.50 5322 G-7 Bottom Seam 4.10 9.30 19.68 40.51 5071 G-8



4.12

4.4. Thickness Computation

Based on the total content of Ash and Moisture percentage, the carbonaceous material is classified as coal upto 40%, shaly coal from 40% to 55% and carbonaceous shale from 55% to 75% determined on equilibrated basis (60% RH at 400C).

The coal seam is a mixture of coal, shaly coal and carbonaceous shale and sandstone, sandy shale, clays, shales, intrusive rocks, etc. To determine the thickness of coal seam the fallowing criteria is followed.

The in-band thickness of the seam is computed by considering coal, shaly coal and carbonaceous shale upto 1.00m thickness within the seam. The non-combustible bands like sandstones, clays, shales, carb-clays and shaly sandstones, which are having more than 0.05m. thickness are excluded from the computation of in-band thickness.

4.5. Reserves

4.5.1. Methodology of Reserves Estimation

1) Indian standard procedure for reserves estimation was adopted while calculating the reserves.

2) Vertical depth lines for each seam at 50m intervals are drawn and the seam wise, dept wise and grade wise reserves were calculated.

3) For estimation of reserves, the average thickness of the seam has been taken from the iso-chore plan by considering the average of the consecutive Iso-chore values and influence of the nearest borehole.

4) The area was calculated with the help of digital planimeter at the time of preparation of GR and subsequently verified by AutoCAD software and the volume is arrived at by multiplying the area with the average seam thickness at that respective point.

5) For calculating the thickness in a particular area, the average Iso-chore values and thickness recorded in the nearest borehole falling in the segment are considered.

6) For estimation of coal reserves the specific gravity of the respective grade is considered.

7) The quantitative and qualitative assessment of coal reserves has been considered out for all workable seams.



4.13

8) For estimation of reserves in band thickness of the seams has been considered comprising coal, shaly coal and carb-shale up to 1m thickness.

9) Heave zones for the faults have been excluded from the reserves calculation. 10) The following specific gravities have been considered with respect to the UHV

or GCV values mentioned for reserves estimation.

Grade Specific Gravity UHV(K.Cal/Kg) GCV (K.Cal/Kg) A 1.40 >6200 >6333 B 1.45 5601-6200 5926-6333 C 1.50 4941-5600 5476-5925 D 1.55 4201-4940 4972-5475 E 1.61 3361-4200 4400-4971 F 1.68 2401-3360 3746-4399 G 1.75 1300-2400 2996-3745

Geological Reserves: The reserves thus arrived at are categorised as proved since geological continuity of the seams has been established beyond reasonable doubt and a 10% of the reserves has been deducted from the gross reserves accountable for unforeseen geological disturbances and other factors to arrive at Net geological reserves.

Mineable Reserves:

The following reserves are excluded from geological reserves to obtain mineable reserves:

• lost in boundary • seams which are not considered for working • Coal locked up under surface features like tanks, railways, roads etc. • Coal locked up in batters and barriers.

Extractable Reserves:

Extractable reserves depend up on the percentage of extraction. This depends on the technology adopted. For ex. 90% of the mineable reserves is considered as extractable reserves in opencast technology, 60% extraction is taken in Longwall technology, 50% in blasting gallery and 30% in hand section mining with caving.



4.14

4.5.2. Geological Reserves within the whole Block a nd that Considered for Mining in Current Mining Plan

The details of Block wise, seam wise geological reserves considered for BPA OC-II Expansion Project are shown below.

S.No Block Seam Geological Reserves (Mt)

Extractable Reserves(Mt)

*Blocked Reserves

(Mt) Block -C 1 Middle seam 1.76 1.60 0.16 2 Bottom seam 0.88 0.80 0.08

Sub Total 2.64 2.40 0.24 Block -B

Ext

1 Middle seam 1.93 1.76 0.17 Block -D 1 Top seam 0.63 0.57 0.06 2 Middle seam 1.44 1.31 0.13 3 Bottom seam 1.05 0.96 0.09

Sub Total 3.12 2.84 0.27 Grand Total

7.69 7.00 0.69

*Note: The coal blocked in batters. 4.5.3. Reserves Already Extracted

The Block-C is conversion of underground workings of MVK-6 Inc to Opencast. The MVK-6 Inc. having an area of 1.50 Sq.Km with geological reserves of 20.00Mt opened on 1.1.1980. After extracting 0.92Mt up to a depth of 160.00mts, the mine was closed on 10.2.2001. Block-D also conversion of underground workings of Goleti-2 Incline up to a depth of 130m to Opencast. Goleti-2 Inc. having an area of 1.25 Sq.Km with Geological reserves of 10.00Mt Opened on 22.3.1983. After extracting 1.00 Mt up to a depth of 180.00mts, the mine was closed on 12.10.2001. The BPA Opencast-II Expansion Project started producing Coal from 2006-2007. The project was stopped after extracting 2.40 Mt of coal from the Block-C due to delay in obtaining permission from MOEF for diversion of forest land. The Block-B extension and Block-D are to be worked in the present proposal with enhanced



4.15

production. As it is an opencast project there will not be any sterilisation of reserves. The plan showing the present status of the Blocks is enclosed as Plate No: X. The Seam wise reserves already extracted is given below:

S.No Block Seam Extractable Reserves(Mt)

Reserves already

extracted

Balance Reserves

Block -C 1 Middle Seam 1.60 1.60 Nil 2 Bottom Seam 0.80 0.80 Nil Sub Total 2.40 2.40 Nil Block -B Ext 1 Middle Seam 1.76 Nil 1.76 Block -D 1 Top Seam 0.57 Nil 0.57 2 Middle seam 1.31 Nil 1.31 3 Bottom Seam 0.96 Nil 0.96 Sub Total 2.84 Nil 2.84 Grand Total

7.00 2.40 4.60

4.5.4. Details of Hydro Geological Study

The report of hydro geological study is enclosed as annexure-17.

*****



5.1

Chapter 5

MINING 5.1. Choice of Mining Method

The BPA opencast-II expansion project is conversion of the erstwhile MVK-6 Incline and Goleti-2 Incline underground mines into opencast. This project consists of three pits namely Block-C, Block-B extension and Block-D. The mining operations in the project started in the year 2006-07 from the Block-C. The extraction of total mineable reserves (2.40 Mt) from the Block-C was completed by 09.08.2011. Extraction of coal from Block-B extension and Block-D not started till now because of delay in diversion forest land. The description given below highlight the choice of mining method:

The BPA OC-II expansion project was considered for opencast method because of the following reasons:

• Occurrence of coal seams at shallow depths. • Possibility of bulk production with minimum sterilisation of reserves. • Economical stripping ratio of 6.50.

Technology Option considered:

Shovel-Dumper Combination The shovel-dumper combination is the most flexible method of surface mining and more suitable for BPA OC-II expansion project depending on the existing geo mining parameters. Hence the shovel-dumper combination is opted for the project for over burden and coal.

5.2. Justification for Optimisation of Targeted Capacity and Assumptions made

The production details of the BPA OC-II Expansion Project from 2006-07 is given in the following table.

Year Targeted Production (M Tonnes)

Achieved Production (Tonnes)

2006-2007 0.40 0.21 2007-2008 0.40 0.78 2008-2009 0.40 0.74



5.2

2009-2010 0.40 0.36 2010-2011 0.40 0.29 2011-2012 0.40 0.03

Total 2.40 2.40

In the earlier approved mining plan it was planned to achieve 0.40 MTPA with deployment of one 2.3 Cum hydraulic shovel with 4 no’s of 35T dumpers. Now it is proposed to deploy 3.00 Cum hydraulic shovel to achieve the enhance rated production.

Optimisation of target capacity at 1.00 Mt is based on the following factors:

• Geological boundary of the proposed mine. • Number of workable seams and total mineable reserves. • Details of coal seams such as thickness, gradient, quality etc. • Geological disturbances such as faults.

Total OB Removal is planned through outsourcing agencies. In the recent past the Outsourcing agencies working in SCCL are able to handle huge volumes of Overburden per year . Hence it is proposed to enhanced capacity of the mine from 0.4 MTPA to 1MPTA to meet the growing demand for coal in Telangana State.

5.3. Sequence of Mining Operations

5.3.1 Sequence of Extraction of various Blocks

The BPA OC-II expansion project is located in Dorli-Bellampalli coal belt of Bellampalli area. In this area there are five coal bearing blocks namely Block-A, Block-B, Block-C, Block-D and Block-E. Part of the Block-A and entire Block-E was extracted under the name of BPA OC-I. Part of the Block-B and the remaining part of the Block-A were extracted under the name of BPA OC-II.

The Block-C, Block-B extn. (Left over patch of Block-B) and Block-D were proposed for extraction under the name of BPA OC-II Expansion project. It was proposed to extract the coal from the Block-C first and accommodate the OB in the back filled area of the Block-A of the BPA OC-II and in the Abbapur external dump yard. After completion of Block-C it is proposed to start the mining operations in the Block-B extension and accommodate the OB in the voids of the Block-C. After completion of Block-B extension it is proposed to start the mining operations in the Block-D and accommodate the OB in the voids of the Block-B extension and Block-B.



5.3

Accordingly the mining operations in Block-C were started and completed in the year 2011-12 and mining activity discontinued due to delay in diversion of Forest land. MoEF has granted diversion permission for diversion of forest land (vide letter no.8-21/2009-FC, dated: 4-09-2014).There for mining operations will resume in Block -B extension and will continue as explained above.

Sequence of Mining Operations within the Block

The seams to be worked within the mine take area are partly developed by u/g board & pillar method (Block-C and Block-D). The sequences of operations in the virgin area and in U/G developed area are described below:

i) In virgin area (Block-B Ext.):

The sequence of mining has been chosen based on the criteria of start-up of mining operations at minimum depth and optimising running stripping ratio. The above sequence will ensure superior cash flows in the initial stages of mining. The equipments are deployed on a horizontal plane and their movement will be along a particular horizon. This method has been adopted, as the equipment will not be able to stand/work along the inclined plane where inclination is 1 in 4. The mining area will be divided into no. of horizons of each 10 m.

The overburden is removed by hiring HEMM above the coal seam exposing the coal roof and thereon working away from it for a width of 40 mts. For extraction of coal, hydraulic shovel is deployed at the foot of the coal bench near the roof in a given horizon and the shovel is fed by dozer dozing blasted coal layer by layer. To achieve the enhanced coal production of 1.00 MTPA it is planned to advance the quarry area by 12.65 Ha/year instead of 5.23 Ha/year as in the earlier approved mining plan.

ii) In U/G Developed Area (Block-D):

In this case, a layer of parting of minimum 6.0 m thick will be left over the developed seams and the equipment will be deployed above that parting so as to prevent them from falling into the u/g galleries. The drilling will be done both in solid parting of 6.0 meter thick and in coal seam together. Drilling should be done over the coal pillars and drilling over the galleries will be avoided. Then, blasting will be carried out in both OB and coal. This will help in packing the galleries with blasted materials, which will prevent the heavy machinery from falling into the galleries. While working in the



5.4

area, where, coal seams are developed, adequate safety precaution will be taken to ensure safety of men and machinery.

Different safety rules in force and regulations made under Mines Act 1952 will be strictly followed in the mine. Various precautions as laid down in DGMS circulars issued from time to time in this regard will also be followed. The main precautions are as follows:

1) The thickness of parting over developed seam will not be reduced to less than 6m so as to prevent the heavy machinery from falling into the underground workings.

2) Holes will be drilled in the pillar and the parting allowed to be dropped so as to fill in the void for easy working of the heavy machinery.

3) As far as possible, the spacing of the holes in the last overburden bench (immediately above the coal seam) shall be so adjusted that the holes do not lie immediately above the galleries, to ensure that the blast holes do not directly fire into the underground workings.

4) The depth of hole, in the last overburden bench, shall be such as to leave at least 2 m of thickness of the parting above the gallery. To ensure compliance with this requirement, a pilot hole shall be drilled for each round of blasting to determine the total thickness of the parting over the gallery.

5) The manner of extraction of pillars will be by drilling and blasting holes only in the coal pillars from top downwards.

Various stages of mine operations like, stage plans at the end of 1st year, 2nd year,3rd year, 4th year and 5th year (final year) and mine closure plan showing the final void are shown in the plate nos. XI, XII(A), XII(B), X(C), X(D), and XIV respectively.

5.4. Quarry Operation Schedule

The following criteria have been adopted for mining operations. a) No of annual working days 330 b) No of daily shifts Overburden 3 Coal 3 c) Duration of shift hours 8



5.5

The shift timings are as below: I shift : 7AM to 3.30PM (With half an hour rest interval). II shift : 3PM to 11.30PM (With half an hour rest interval). III shift : 11PM to 7.30AM (With half an hour rest interval). The above shift timings facilitate the employees to take lunch and dinner in between the shifts, which improves the utilization of working hours effectively and HEMM.

5.5. Production Schedule

The project is an existing opencast mine and the present proposal is to enhance its rated capacity from 0.40 MTPA to 1.00 MTPA. The tentative year-wise coal production and overburden removal schedule along with average stripping ratios of the project is given in Table-5.1.

Table-5.1: Year-wise Mining Schedule

Quantities Financial Year Year Coal (Mt) OB (M.Cum) SR(Cum/T) Excavated Quantities Till now 2.40 9.61 4.00

Balance Quantities

2016-17 1 0.76 8.33 10.93

2017-18 2 1.00 8.00+ (0.30 Rehandling

over Block-D) 8.30

2018-19 3 1.00 7.66 7.66 2019-20 4 1.00 7.62 7.62 2020-21 5 0.84 3.99 4.75

Subtotal (Expansion) 4.60 35.90 7.80 Total 7.00 45.51 6.50

The rated capacity of 1.00 Mtpa of coal is proposed to be achieved during the 2nd year and will be maintained upto 4th year. In the 5th year, balance 0.84 Mt. of coal will be extracted. The peak annual OB of 9.61 M.Cum is proposed to be removed in the 1st year.

5.6. Equipment Configuration

To achieve the enhanced production of 1.00 MTPA, the following equipment is envisaged:



5.6

SL. No. Description Equipment No.

A

Coal (Departmental)

3 Cum Diesel. Hyd. Backhoe 1

35 T Dumpers 6

160mm Diesel RBH drills 1

320 HP Dozers 1

B Reclamation(Departmental) Water sprinkler (28KL) 1 Motor Grader (145HP) 1

C

Common(Departmental)

1.0 Cum Diesel Hydraulic Excavator 1

Loader (2.5 Cum) 1

D

Overburden(Off-loading)

By hiring of HEMM including for drilling

3 Cum Hyd. Backhoe 8

18 T trucks 56

28 KL Water Tankers 3

320 HP Dozers 6

Motor Grader 2

The productivity assumption for excavators and dumpers:

a) OB (Off-Loading)

Sl. No.

Particulars Rock type

Annual Productivity

1 3.00 Cum. Diesel. Hyd. shovel along with 18 cum Trucks

OB 1.00 M.Cum

2 18 T Trucks along with 3.0 Cum. Diesel. Hyd. shovel (3.30 Km of Wtd Avg lead)

OB 0.143 M.Cum

The annual capacity of the 3.0 Cum hydraulic shovel is considered as 1.00 M.Cum. The average annual OB to be handled is 8.00 M.Cum. Hence the total No. of shovels required is 8.

The weighted average lead is 3.3 Km. and the optimum No. of 18T trucks to be deployed per shovel are 5. Hence the total No. of 18 T trucks required to be



5.7

deployed are 40. Considering 67% of utilization factor the total No. of 18T trucks to be kept on roll are 56.

b) Coal (Departmental)

Sl. No.

Particulars Rock type

Annual Productivity

1 3.00 Cum. Diesel. Hyd. shovel along with 35T Dumpers

Coal 1.00 MT

2 35T Dumpers along with 3.0 Cum. Diesel. Hyd. shovel (2.30 Km of Wtd Avg lead)

Coal 0.167 MT

The annual capacity of the 3.0 Cum hydraulic shovel is considered as 1.00 MT. The average annual coal to be extracted is 1.00 MT. Hence the total No. of shovels required is 1.

The weighted average lead is 2.3 Km and the optimum No of 35T dumpers to be deployed per shovel are 4. Hence the total No of 35T dumpers required to be deployed is 4. Considering 67% of utilization factor the total No. of 35T dumpers to be kept on roll are 6.

5.7. Method Of Work

Based on the available data, most of the strata require drilling and blasting operations before excavation. In view of this, total overburden is planned to be excavated by Shovel Dumper combination by hiring of HEMM.

The Sequence of mining operation are shown in plate no. XIII. In this method, the equipment will be deployed on a horizontal plane and their movement will be along strike direction. This method has been adopted considering the steepness of the coal seams present. The mining area will be divided into no. of horizons with a height of 10 m each. For extraction of coal, diesel operated hydraulic backhoe shovel is being deployed after forming a level platform over blasted coal in patches. The method of work comprises of -

• Initial opening of Box cut



5.8

• Removal of OB to expose the coal seam • Removal of topsoil and hard rock. • Excavation of coal.

Working near a fault Faults are areas of disturbance which pose a threat to safety. Special care needs to be taken while approaching a fault. The heave zone of the fault often consists of unconsolidated strata which tend to collapse/slide resulting in slope/bench failure. If a fault forms the boundary of the quarry floor, the high wall benches should be formed cutting across the fault plane i.e., excavating the entire heave zone in the process. As far as possible, benches should not be formed parallel to and abutting against a fault plane since they are likely to fail/slide. Thus, the safer method could be to align the benches perpendicular/oblique to the fault plane while approaching a fault. Wherever, benches are aligned parallel to fault plane, the excavation of benches should be from top-downward. The abutting faults within property have also been cut and kept properly benched. The working benches are designed at an angle of 450 to the fault plane to ensure proper working gradient and to avoid benches parallel to the fault plane.

5.7.1 HAUL ROAD PLANNING

The main access trench or haul road is envisaged to have a gradient not exceeding 6% at any point on the haul road. The haul road is planned to be extended progressively as the quarry deepens. Local ramps, for inter-bench movements, are planned at 6% to 10% gradient depending on local site conditions. Width of haul roads, berms, etc., shall be maintained as per DGMS circulars issued from time to time.

The haul road is provided with a drain along the high wall side of the road and connecting cross drains spaced at a suitable regular interval along the length of the haul road. Periodic cleaning of drain is to be done. The haul road width is designed considering space for dozer track, pipes, electric lines, cables, provision for berms and two lane traffic widths for dumper movement. Sufficient road width (30m) has been proposed so that, even with a temporary partial blockage of the road, the traffic



5.9

can continue. If the haul road encounters a clay horizon, the clay layer will be dug out and proper material will be filled for making haul road. Adequate lighting arrangements have been proposed for easy night shift operations. Further, to improve visibility, numbers of bends are kept at the minimum.

5.7.2 Coal Evacuation

There is a pit head CHP situated near Block-C. The coal from the Block-C is used to be transported to this CHP by 35T dumpers. Now a new pit head CHP is under construction at Block-D. The coal from the Block-B Ext and Block-D will be transported to this CHP by 35T dumpers.

5.8. Production Capacity and Life of the Mine

The annual production capacity of the BPA Opencast-II expansion project is planned for 1.00 MTPA. After enhancement of the capacity, the balance reserves (4.60 m.t) will be extracted in five years period commencing from 2016-17.

5.9. Coal Reserves and Stripping Ratio

The reserves are calculated basing on the Iso-chores and seam sections separately. The mineable reserves for opencasting are arrived by deducting 10% losses from Geological Reserves due to dilution. The details are as follows.

Seam/Section Geological

Reserves(Mt) Mineable

reserves(Mt) Reserves

Blocked in the Batters

Block -C Middle Seam 1.76 1.60 0.16 Bottom Seam 0.88 0.80 0.08 Total (Block -C) 2.64 2.40 0.24 Block -B Extension Middle Seam 1.93 1.76 0.17 Total (Block -B Extension) 1.93 1.76 0.17 Block -D Top Seam 0.63 0.57 0.06 Middle seam 1.44 1.31 0.13 Bottom seam 1.05 0.96 0.09 Total (Block -D) 3.12 2.84 0.28 Grand Total 7.69 7.00 0.69



5.10

5.9.1 Stripping Ratio

The total overburden to be removed to extract the 7.00 Mt of coal from the BPA OC-II expansion project is 45.51 M.Cum i.e. overall Stripping Ratio of 6.50. The block wise stripping ratios are shown below:

Block Name

Coal (Mt)

Total OB (M.Cum)

Stripping Ratio

Remarks

Block -C 2.40 9.61 4.00 completed Block -B Extension

1.76 13.67 7.76

Block -D 2.84 21.93+0.30* 7.82 *Rehandling of OB over the Block-D

Total 7.00 45.51 6.50 2.40 Mt of Coal is already extracted from the Block-C by removing 9.61 M.Cum of OB. Therefore the balance OB (35.90 M.Cum) is to be removed to extract 4.60 Mt of coal from the Block-B ext and Block-D with a stripping ratio of 7.80.

5.10. Opening of Deposit with Reasons for Selection of Site

The initial opening of the deposit has been designed considering –

• Low stripping ratio zones at progressively increasing depths. • Availability of sufficient coal exposure to sustain a steady level of

production. • To create a void to accommodate subsequent dump • Accessibility to the deposit by haul roads.

5.10.1 Opening of Deposit & Reason

Block-C: The Block-C has incrop of both middle and bottom seams. The length of Middle and Bottom seam incrop are 250m and 230m respectively. The incrop lies at a cover varying between 11m to 14m depth from surface. The entry to the deposit was made by constructing an access road dipping at 6% gradient to the bottom seam incrop.



5.11

Block-B Extn: The Block- B Extn has incrop of Middle seam running for a length of about 850m. The incrop lies at a cover varying between 10m depth from surface. The entry to the deposit is proposed by constructing an access road dipping at 1 in 16 gradient to the Middle seam incrop region. Block-D The block proposed for the project has incrop length of 790m in Top seam, 740m in Middle seam and 650m in Bottom seam. Depth of Bottom seam incrop is 10-22m.The access to the deposit is planned starting at surface contour 615m to intercept Bottom seam to the rise of BH.No.57 at an RL of 974m which involves preparation of a small ramp of 176m only.

5.11. Bench Parameters

Bench slope has been designed to be at an angle of 70 degrees to the horizontal. Working benches are proposed to have a width of 40m and a height of 10m. Final slope of the benches along the high wall will be maintained at 450. It is proposed to extract both coal and OB with shovel-dumper combination. Ramps at 1 in 16 gradient for evacuation of coal and OB from different working horizons will be required to be prepared while working the quarry. It has been envisaged that wherever possible, coal and OB faces may be staggered along the strike to avoid intermixing of material. Hydraulic backhoe is provided to assist the selective mining process. Suitable numbers of dozers have been provided to minimize the mixing of OB materials so that the dilution is kept at a minimum possible extent. The quarry has been so planned considering difficult geo-mining parameters like limited strike length, steep gradient of seams, multiple seam workings and working over developed galleries.

5.12. Quarry Parameters

The following physical parameters of the opencast project–

Sl. No.

Particulars Block -C Block -B Extn.

Block -D

a Maximum strike length along surface (m) 350 1100 1300 b Maximum strike length along floor (m) 250 880 1000



5.12

c Maximum width of the quarry

along surface (m) 770 400 425

d Maximum width of the quarry along floor (m)

740 310 290

e Minimum depth of the quarry (m) 15 10 8 f Maximum depth of the quarry (m) 115 100 130 g Floor area of quarry (Ha.) 12.2 21.43 22.0 h Area of excavation on surface (Ha.) 21.81 28.06 40.64 i Average gradient of the seam 3.5 to 4.0 3.2 to 4.0 3.17 to 4.4

5.13. Details of Coal Seams

The detailed investigations in BPA OC-II expansion project (Block-C, B Ext and D) have established the presence of 3 Coal Seams viz., Bottom Seam, Middle Seam and Top Seam in ascending order.

The thickness, depth, moisture, ash, gross calorific value (GCV) and the grade of the product mix is estimated as follows:

Seam/ Sections

Thickness (m)

Depth (m)

Moisture (%)

Ash (%)

Avg.GCV (K.Cal/Kg)

Avg. Grade

Block -C Middle Seam 2.74 – 10.98 14.32-167.03 3.7-8.8 23.9-29.4 5081 G-8 Parting 3.35-13.11 Bottom Seam 1.98-5.19 8.23-182.57 4.6-9.6 14.7-30.2 5396 G-7 Block-B Extension

Middle Seam 4.58-7.73 21.28-129.05 5.20-7.11 26.14-42.40 4646 G-9 Block -D Top seam 1.22-3.57 29.87-137.76 3.40-9.00 24.20-42.25 5131 G-8 Parting 1.52 - 5.48 Middle seam 1.07-6.55 7.92-142.64 2.90-8.50 20.00-37.50 5322 G-7 Parting 7.61 – 15.45

Bottom Seam 2.13-5.19 13.72-161.24 4.10-9.30 19.68-40.51 5071 G-8

5.14. Dumping Strategy

The BPA OC-II expansion project produces 45.51 M.Cum of overburden throughout its life from 2006-2007. Out of the total OB it is planned to accommodate about 8.55% (3.89 M.Cum) of OB in the external dump yard and 91.45% (41.62 MCuM) of OB in the voids of adjacent pits (Decoaled areas).



5.13

The design criteria of waste dump is described below. The stage-wise Schedule of excavation of coal, overburden and dumping of overburden including top soil is given in the table-5.2.

Table-5.2: Stage-wise Mining & Dumping Schedule (Cumulative)

Stage at the end of

Coal Production

OB Removal (Bank M.Cum)

Total Excavation

Dumping (Including Top Soil)

(Bank M.Cum)

year Mt MCum Top Soil Hard OB Total (Mcum) Internal External

Till Now 2.40 1.60 0.44 9.17 9.61 11.21 - 1 0.76 0.51 0.43 7.90 8.33 8.84 - 8.15

2 1.00 0.66 0.57 7.43

8.00 +0.30* 8.66+0.30* - 8.16+0.30*

3 1.00 0.66 0.28 7.38 7.66 8.33 - 7.68

4 1.00 0.66 0.08 7.54 7.62 8.28 - 7.62

5 0.84 0.56 - 3.99 3.99 4.55 - 3.99

*Note: 0.30 M.Cum of loose OB to re-handled from the Block-D quarry area. Design Criteria

a) External Dump

The BPA OC-II expansion project is having only one external dump yard located at Abbapur village. A small quantity of OB (3.60 M.Cum) is to be accommodated in that dump yard. The height of the external dump yard is 30m only in single deck. The slope of the dump will be maintained at 37½0 from the horizontal. Track dozers will be deployed for shaping the dump.

b) Internal Dump

The gradient of quarry floor in all the blocks is more than 1 in 3.5. The extents of all the blocks are too small to accommodate concurrent backfilling since most of the place is consumed by haul roads. As such no concurrent internal dumping is planned. However most of the OB will be accommodated in the de-coaled voids of the adjacent pits.



5.14

Sequence of Dumping

The Block Wise Dumping Sequence is as follows:

Block-C:

The hard OB and topsoil produced from the Block-C was 9.17 M.Cum and 0.44 M.Cum respectively. The topsoil was already spread over the Dumps of block-E and A of BPA OC-I. The total hard OB is dumped in the de-coaled area of Block-A (BPA OC-II).

Block-B Extension:

The quarrying of Block-B Extn Produces 13.67 M.Cum (Bank) of OB. Out of which the hard OB is 13.13 M.Cum and the topsoil is 0.54 M.Cum. Out of the 13.13 M.Cum of hard OB, 3.60 M.Cum of hard OB will be accommodated in the Abbapur external dump yard upto a max height of 30m above GL. The balance 9.53 M.Cum of hard OB will be dumped in the decoaled area of Block-C.

The dumping sequence in the Block-C decoaled area is as follows:

i) Dumping Below 930m RL For dumping in the voids of Block-C below 930m RL, the dumpers (from Block-B Extn. to Block-C) will pass through the backfilled area of Block-A (BPA OC-II) and finally through the access ramp of Block-C. The dumping will be carried out in decks of 30m up to 930m RL.

ii) Dumping between 930m and 960m RL For dumping in the voids of Block-C between 930m and 960m RL, the dumpers (from Block-B Extn. to Block-C) will pass through the backfilled area of Block-A (BPA OC-II). The dumping will be carried out in decks of 30m up to 960m RL.

iii) Dumping between 960m and 990m RL For dumping in the voids of Block-C between 960m and 990m RL, the dumpers will pass through backfilled area of Block-A (BPA OC-II) and finally through the access ramp of Block-C. The dumping will be carried out in decks of 30m up to 990m RL.



5.15

Topsoil :

The topsoil produced while quarrying of Block-B Extension is 0.54 M.Cu.m.(Bank). The topsoil produced during the first year is 0.43 M.Cum, out of which 0.25 M.Cum will be spread over the backfilled areas of Block-A and balance 0.18 M.Cum of topsoil will be stored in the temporary storage dump yard. The balance quantity of 0.29 M.Cum will be spread over the Abbapur external dump. Block-D:

The quarrying of Block-D produces 21.93 M.Cum of OB (Topsoil-0.82 M.Cum & Hard OB-21.11 M.Cum). A portion of dump i.e., 0.3 M.Cum of BPA.OC-I (falling within the land limits of Block-D) is to be rehandled. Thus the total excavation of OB in Block-D is estimated as 22.23 M.Cum (21.93 + 0.3) of OB.

The hard OB from Block-D i.e., 21.41 M.Cu.m. (Bank) will be dumped in the voids of Block-B extn in decks of 30m from highwall to incrop.

Topsoil :

The topsoil produced i.e., 0.82 M.Cu.m.(Bank) will be spread over the dumps of Block-C and Block-B Extension. Location of external Dump Yards

It is proposed to accommodate the hard OB in the following dump yards.

OB in M.Cum. Location of dumping Total Hard

OB OB already

Dumped Balance OB Max. Dump

Height(m) Backfilled area of Block-A (BPA OC-II)

9.17 9.17 0 +60

Abbapur dump yard 3.60 0.00 3.6 +30 voids of the Block-C 9.53 0.00 13.13 +10 voids of the Block-B Extn

21.41 0.00 21.41 +20

Total 43.71 9.17 34.54

5.15. Top Soil Management

The total topsoil to be produced from all the blocks of the BPA OC-II expansion Project is 1.80 M.Cum. Out of which 0.44 M.Cum of topsoil is already removed from



5.16

the Block-C and spread over the dumps of block-E and A of BPA OC-I. The balance topsoil to be produced from the remaining two blocks is 1.36 M.Cum. Except in the first year total topsoil produced during the project life will be spread directly on to the finished OB dumps. In the first year a quantity of 0.18 M.Cum of topsoil will be stored at the Block-D quarry area and the same will be re-handled in the 2nd year and spread over the finished dump in the Block-C de coaled area. out of the balance topsoil of 1.36 M.Cum, 0.25 M.Cum will be used for finished back filled are of Block-A of BPA OC-II, 0.29 M.Cum will be used for spreading over the finished Abbapur dump yard, 0.46 M.Cum will be used for spreading over the back filled area of Block-C and the balance quantity of 0.36 M.Cum will be used for spreading over the back filled are of Block-B and B extension dumps.

Topsoil Management at BPA OC-II Expansion Project

YEAR

Top soil Production

(M.Cum)

Spreading (M.Cum)

Temporary Storage (M.Cum)

Back filled area of Block-

A

Back filled area of Block-C

Back filled area of

Block-B & B Ext.

Abbapur External dump

yard

Block -E and A of BPA OC-I

Till now 0.44 - - - - 0.44 -

1 0.43 0.25 - - - - 0.18 2 0.57 - 0.46 - 0.29 - - 3 0.28 - - 0.28 - - - 4 0.08 - - 0.08 - - - 5 0 - - - - - -

Total 1.80 0.25 0.46 0.36 0.29 0.44

5.16. Area of excavation and Dumps

The total area of excavation of BPA OC-II expansion project is 90.51 Ha.

Block Excavation Area

Block-C 21.81 Block-B Extension 28.06 Block-C 40.64 Total 90.51

The Details of Dump Areas:

The project produces 45.51 M.Cum of OB, out of which 40.11 M.Cum of OB will be accommodated in the voids of the adjacent decoaled pits. Only a small quantity of



5.17

3.89 M.Cum of OB (including topsoil) will be accommodated in the Abbapur external dump yard. The area of the Abbapur dup yard is 19.16 Ha. The total area of the dump yard including drains around the dump and safe distance is 23.81 Ha.

The Details of OB dumps are given below:

OB Dumping Name of the Dump yard Quantity Dumping Excavated From

H OB Topsoil H OB Topsoil Total De-coaled area of Block-A of BPA OC-II 9.17 0.25 C B Ext 9.42 Abbapur external dump 3.60 0.29 B Ext B Ext 3.89 De-coaled area of Block-C 9.53 0.46 B Ext D 9.99 De-coaled area of Block-B Ext 21.41 0.36 D D 21.77 Dumps of Block-A & E of BPA OC-I 0.44 C 0.44 43.71 1.80 45.51

Final Void

The BPA OC-II expansion project consists of three pits namely Block-C, Block-B Ext., and Block-D. It is proposed to fill the voids of the Block-C and Block-B Extension with the OB from the Block-B Extension and Block-D respectively. Hence only the void of Block-D will be left after final operations. The maximum depth of the final void at the end of mining operations of the Block-D is 130 m. The volume of the void is 23.82 M.Cum and covers an area of 40.64 Ha.

5.17. Blasting Requirements

5.17.1 Drilling and Blasting

For drilling in coal one 150mm RBH diesel drill is envisaged for this project. Drilling in overburden will be done by hiring HEMM. Blasting in coal and overburden is done departmentally.

Whenever the mine boundary approaches the danger zone of 500m from villages/dwellings/structures etc., controlled blasting and vibration study have to be conducted by any scientific agency for relaxation of danger zone, i.e., to work within 500 m.



5.18

Drilling and blasting operations are proposed to be carried out in a way that they facilitate the separation in coal and OB removal process. These operations may be suitably modified to ensure separation in mining of coal and OB and to suit local site conditions.

Blasting Pattern for OB: Based on experience on coal measure rocks of similar characteristics, it is proposed that burden, spacing, and depth for 150 mm dia holes will be 5m, 6m and 10m respectively. Blasting Pattern for Coal: For blasting in the coal, it is proposed that burden and spacing for 150 mm dia holes will be 4m and 5m respectively. The depth of the blast hole will be same as the thickness of the seam.

5.17.2 Explosive Consumption & Magazine Capacity

The following specific consumption of explosives has been adopted for estimating the annual requirement of explosives per Cum.

a Overburden 0.32 Kg. b Coal 0.23 Kg.

The suggested pattern and specific consumption of explosives are tentative only. Based on actual field experience necessary modification can be made. Based on powder factor and calendar programme of excavation, the requirement of explosive will be 12.40 Tonnes/day including requirement for secondary blasting. Magazine Capacity The magazine at Bellampalli will serve the blasting needs of the BPA OC-II Expansion Project. The magazine capacity of the Bellampalli magazine is given below.

S.No. Description Capacity 1 Explosive(Nitrate Mixtures) 39.68 T



5.19

2 Cast Booster 5 T 3 Detonating fuse 15 Km

5.18. Pumping Requirement

5.18.1 Existing Drainage System of the Area

The BPA OC-II expansion project includes three blocks namely Block-C, Block-B Extn and Block-D. These Blocks are 1 to 2 Km apart. The area is drained by two ephemeral streams i.e., Sonapur nallah (Block-D) and Narsapur nallah (Block-C) flowing in a northeasterly direction. Finally, the Narsapur nallah joins Pulikuntala nallah. Another nallah namely Beijal nallah flows in the western position of Block-B Extn (Besides Abbapur village). The water flows towards north and joins the Sonapur nallah at Block-D. The basin slope of this area is about 15M/ Km. Two hills Sonapur gutta (to north-east of Block-D) and Bheemanna gutta (to south-east of Block-C) influence the drainage system of the area.

5.18.2 Protection Against Inundation From Surface Waters

The following protection measures are proposed to be taken to prevent any inrush of water from surface.

5.18.2.1. Block-C

Narsapur nallah flows in northeasterly direction right across the middle of the property. Beijal nallah is flowing in the easterly direction along the outcrop of Block-B and Block-A joins Narsapur nallah (near Block-C). Diversion of Narsapur Nallah It was proposed to divert the Narsapur nallah (Block-C) along the periphery of the Block-C. Accordingly the Narsapur nallah was diverted by excavating 90485 Cu.M of material. The length of the diverted nallah is 1180m. Construction of Bund along the Nallah A bund is constructed between the diverted Narsapur nallah and the quarry to avoid the inflow of water in to the quarry. The top and bottom widths of the bund are 2m



5.20

and 6m and height is 2m. The length of the bund is 1186m. The total volume of material required for formation of the bund against Narsapur nallah is 71888 Cu.m.

5.18.2.2. Block-B Extension

Diversion of Nallah Beijal nallah is flowing in the western position of the Block-B Ext property. It is proposed to divert the nallah along the western periphery of the block. The nallah passes through Abbapur village. It is planned to use the land of Abbapur village for the external dump. The nallah diversion is required in first year of the expansion project to start the mining operations in the Block-B Ext. The total volume of material required to excavate the Nallah is 76800 Cu.m (Top width-12m, Bottom width-4m, Depth-4m and length is 1200m). It is proposed to dig a drain along the dip side of the Block-B Extn between the quarry and Abbapur dump yard to prevent inrush of water (Top width-5m, Bottom width-3m, Depth-2m, length-1676m and Volume -16760 Cum). Construction of Bund It is proposed to construct a bund against the diverted Nallah (Length- 1200m, Bottom width-10m and Top width-6m Height-2m, volume of Material required will be 19200Cu.m).

5.18.2.3. Block-D

Diversion of Nallah A seasonal nallah, namely Sonapur nallah passes along the middle of the property. It is proposed to divert the nallah along the periphery of the block. Sonapur gutta is located adjacent to the block on the northeastern side. It is therefore planned to dig a drain all along the periphery of the block (connecting the diverted nallah) so as to protect the quarry from inrush of water. The width varies from 16m to 28m and depth of the nallah varies from 3m to 4m. The length of diverted nallah is 3377m. The total volume of material required for excavation of Nallah is 173134 Cu.m. Construction of Bund

It is also proposed to construct a bund against the diverted nallah and drain. The length of bund is 3286m, the top and bottom width is 6m and 14m. The volume of material required for construction of bund is 131440 Cu.m.



5.21

5.18.2.4. Sump Design

The sump will be created by extending the bottom-most seam and the partition benches towards dip. The pumps will be installed on the partition stone, which provides good foundation. The maximum depth of the water is 12m. An excavation of 200m long along strike and 60m towards dip will provide the sump of required capacity. The sump will be made in the middle of the strike extension and the quarry floor will be made to slope towards the sump.

5.18.2.4.1. General Considerations

The pumping requirement has been calculated on the basis of the following general considerations: � The geographical location of the opencast workings � Meteorological data from the area concerning rainfall � Life of the mine & percentage probability of maximum rain fall in one day during

the life of the mine. � Surface features of the area surrounding the opencast working � Catchment area, mined-out area, area beyond excavation, and internal dump

area � Run-off characteristics of the area � Depth of the quarry � In-flow of ground water into the quarry � Desired location at the surface where the pit water can be discharged � Surface drainage system & garland drains. � Effective working hours- 20 hours/day for pumping calculations, but for monsoon

period Pumping will be done round the clock.

5.18.2.5. PUMPING

5.18.2.5.1. Basic Data

The following data has been taken into consideration for arriving at the size of the pumps: 1 Max. rainfall in a day 170 mm 2 Life of the mine 5 years



5.22

3 Depth of mine (Max.) 130m (Block-D) 4 Run-off co-efficient a) For Area of extraction excluding

Area of internal dump

0.6

b) For area beyond excavation 0.1 c) For dumped area 0.15 5 Inflow of water to the mine due to seepage and ground water

10% of the water accounted in the mine due to rain-fall

5.18.2.5.2. Pumping Calculations

Assessment of Volume of Water to be Pumped

Volume of rainwater entering to the mine and accumulating in the quarry (make of water) has been assessed on the basis of the following formula: Q = A x H x � m3/day Where, A - Catchment area in m2 H - Maximum daily rainfall in m � - Run-off co-efficient

The calculation has been done taking into consideration the following parameters, (Maximum rainfall is considered for calculation purpose).

The calculation has been done taking into consideration the following parameters: (Maximum rainfall is considered for calculation purpose) Block-C The mining operations in the Block-C are already completed. The void area is accumulated with water. The water will be dewatered before dumping the OB from the Block-B extension.

Block-B Extn.

- Area of total excavation - 0.2806 Sq.Km - Area beyond excavation - 0.145 Sq.Km - Area of internal dump - ----- - Area of external dump - 0.238 Sq.Km - Area of excavation excluding internal

Dumped area - 0.281 Sq.Km



5.23

- Probable water accumulation on the Day of maximum rainfall - 31086.2 Cu.m. (0.145*0.1+0.281*0.6+0.238*0.15)(1000*1000)(170/1000)

- Taking 10% for seepage and inflow Of ground water total make of water - 34194.8 Cu.m.

- Assuming 20 hrs. Pumping per day, Pumping capacity required to pump

out the total make of water in 6 days - 284.95 Cu.m/Hr. - Requirement of pumps - 284.95 /228=1.23 (228 Cum/Hr(1000GPM) capacity) - No of Pumps required - 2 Block-D

- Area of total excavation - 0.406 Sq.Km - Area beyond excavation - 0.218 Sq.Km - Area of internal dump - ----- - Area of excavation excluding internal

Dumped area - 0.406 Sq.Km - Probable water accumulation on the

Day of maximum rainfall - 45158.8 Cu.m. (0.218*0.1+0.406*0.6)(1000*1000)(170/1000)

- Taking 10% for seepage and inflow Of ground water total make of water - 49674.7 Cu.m.

- Assuming 20 hrs. Pumping per day, Pumping capacity required to pump

out the total make of water in 6 days - 413.96 Cu.m/Hr. - Requirement of pumps - 413.96/228= 1.82 (228 Cum/Hr(1000GPM) capacity) - No of Pumps required - 2

5.18.2.5.3. Selection Of Pumps

On the basis of the calculations, the following pumps have been provided.

a) Main Pump

On the basis of the calculations, the following pumps have been provided.

Two Nos. of 1000GPM (228 Cum/Hr), 150M head, 180KW Non-FLP pumps have been provided to de-water the mine.



5.24

Four Nos of 1000GPM, 18M head, 30KW, non-FLP pumps have been provided to pump out the accumulated water near the working faces to main sump and filling into water sprinkler.

b) Selection of Delivery Ranges

The delivery ranges have been selected on the basis of the pumping capacity during probable maximum rainfall and velocity of flow within the reasonable limit. The ranges thus selected for pumps are of 200 mm internal diameter.

5.18.2.5.4. GARLAND DRAINS

Garland drains are provided all along the Quarry surface area to prevent surface/dump yard rainwater into quarry.

*****



6.1

Chapter 6

Manpower, Safety and supervision

6.1. Manpower and Supervision Requirement

The detailed manpower required for the project has been worked out as per the prevailing norms based on workload, the HEMM fleet requirement and the working conditions. The average daily attendance required to achieve the rated production of 1.00 MTPA is estimated as 285 excluding area level. After considering absenteeism towards authorized leave, sick etc., total men on roll for the project is 342.

6.1.1. Supervision Requirement

The supervision requirement for the BPA OC-II expansion project is given below.

Designation MoR Project Officer 1 SOM 1 DY. MANAGER 2 Safety Officer 1 U. MGR 7 Project Engineer 1 ENGR. (E&M) 4 Survey Officer 2 Welfare Officer 1 Surveyor 1 OVERMAN 14 Foreman(Mech) 2 Foreman(Elec) 2 Total 39

6.2. Productivity

The average daily requirement of manpower at the project level is 285 excluding OB out sourcing manpower, for an average daily production of 3030.30 tonnes. The planned O.M.S. is 10.63 tonnes. Offloading manpower: The out sourcing manpower is shown below:



6.2

Sl.No Category Manpower 01 Skilled 95 02 Semi skilled 50 03 unskilled 195

Total 340

6.3. Safety

The project is extracting the coal deposit by opencast method of working; the project also involves extraction of developed coal depillared (Block-D). Compared to underground methods of coal extraction, opencast working is totally free from the strata control, roof control and ventilation problems and the associated danger to life and property.

Problems connected with dust, gases, inundation and heating of coal will also be largely reduced if not totally eliminated. Dealing with these problems will be much easier than in case of underground working.

However while working in the area, where coal seams are developed, adequate safety precaution will be taken to ensure safety of men and machinery. Different safety rules in force and regulations made under Mines Act 1952 are being strictly followed in the mine. Various precautions as laid down in DGMS circulars issued from time to time in this regard are being ensured. The method of work being followed over the developed galleries is described in Chapter: 5.7.

6.4. Disaster Management

There are various factors which can cause accidents in opencast project. The following are the causes of accidents in an opencast project:

1. Extraction of Coal pillars (Block-D) 2. Haul road maintenance 3. Heavy Machinery 4. Drilling & Blasting 5. The Side Collapses 6. Overburden 7. Loose dumps of coal 8. Fire fighting 9. Inundation/Drainage

The following safety measures will be taken to avoid accidents.



6.3

6.4.1. EXTRACTION OF COAL PILLARS (Block-D)

The Block-C and Block-D of this project involves extraction of U/G developed pillars. The extraction in the Block-C is already completed successfully. The problems associated in extraction of standing pillars by opencast method are due to the following reasons.

i) Spontaneous heating & fire ii) Deployment of HEMM iii) Coal dust explosion iv) Collapse of parting v) Blasting

6.4.1.1. Spontaneous Heating & Fire

� In the old workings, due to long standing developed pillars, blasting and

movement of heavy machinery creates fractures in the intervening parting and pillars. In this fractured zone, auto oxidation and heat build-up occurs which ultimately resulting into open fire. The crushed coal in the developed workings might catch fire due to spontaneous heating.

� The main factors attributable to the bench fire due to spontaneous heating are: - Presence of micro/macro cracks in bench walls - Long exposure of bench walls to the open atmosphere Accumulation of loose coal on the bench floor.

Precautions/ Remedies

� Where seams are liable to spontaneous heating a minimum coal bench exposure will be maintained.

� As far as possible optimum quantity of blasted material will be made available. � In case of any indication of fire in pilot boreholes, the seams will be drowned

with water. However, during de-watering with the advance of quarry face, there is likely danger of water gas explosion. To prevent such incidents, slow rate of de-watering will be done.

� To avoid spread of fire/heating trench cutting and filling up with OB will be done for isolation of fire.

� To deal with fires, various control techniques like digging out, trenching, sealing, hydraulic sand-stowing, flushing with water/bentonite mixture through boreholes, inert gas infusion and isolation may also be followed.

� To prevent and control fire, the contact time of cracking coal with oxygen in the air is ensured as far as possible to be less than the time of incubation period of ignition.



6.4

� Minimum exposure of coal benches upto 100m in length is ensured. � Blanketing of exposed galleries with overburden is being done. � To lower the chemical activity of coal the exposed coal will be treated with

anti-pyrogen like Hygroscopic – Calcium Chloride, Magnesium Chloride, Sodium Chloride & Dolomite powder.

� To reduce the contact time of exposed coal pillars with air, measures like insulation of coal should be taken up with fire retardant sealant (A bitumen emulsion based fire protective coating has been developed by CMRI, but this has very restricted use).

6.4.1.2. Deployment of HEMM

� The galleries will be clearly demarcated over the benches with lime, flags, etc

for safe movement of men and machine. � HEMM movement will be over the pillars only or over the galleries filled up and

compacted with blasted material for safety of men and machinery. � The thickness of parting will be maintained not less than 6m so as to prevent

the heavy machinery from falling into the underground workings. � Holes drilled from the pillar sides and the parting dropped so as to fill in the void

for easy working of the heavy machinery.

6.4.1.3. Coal Dust Explosion Danger of coal dust explosion during extraction of developed pillars by opencast method exists due to accumulation of coal dust in floor of developed galleries and heavy blasting. To preclude any such occurrence, the Directorate of Mines Safety has issued guidelines and precautions to be taken for avoiding danger of coal dust explosion as outlined hereunder:

� Where underground workings are accessible, the same should be surveyed, cleaned of coal dust and thickly stone dusted. But in this project the underground workings are not accessible; hence it is ensured that the u/g workings are drowned with water and controlled dewatering is done to maintain the water level sufficiently ahead of the coal face.

� If underground workings are not waterlogged but are inaccessible, it has to be ensured that underground working immediately ahead of opencast are properly stone dusted to obviate danger of coal dust explosion due to heavy blasting in opencast mine. For the purpose, holes can be drilled from first OB bench or surface to underground gallery junctions and at least 2 tones of stone dust (preferably dry, water proofed limestone or dolomite dust) per hole is pushed down and then dispersed in working with the help of compressed air.



6.5

6.4.1.4. Collapse of Parting

The strata between a quarry bench floor and roof of an old underground working may be weak and may collapse as a result of movement of HEMM and equipment may fall in the excavated space of old workings. In case of any fire in underground workings it may lead to accident. Precautions/ Remedies

� A parting of 4m/6m of OB/coal over the developed pillars will be maintained, to ensure the parting advance pilot boreholes are being drilled.

� A plan showing the parting thickness, position of underground galleries and junctions will be marked and maintained.

� A pilot hole also serves to know the roof levels of U/G workings. � From old plans the position of underground standing pillars is being earmarked

by drilling additional pilot bore hole randomly in advance of 100 to 200m from coal bench to adopt suitable precautionary measures.

6.4.2. Drilling & Blasting

Blasting in mining areas may give rise to ground vibrations. Fly rock is another problem that deserves attention. Based on the ground vibration studies made earlier, proper precautions are being taken during blasting operations for controlling the ground vibrations. The management plan for addressing the various impacts due to blasting operations is presented below.

Blast Vibrations & Control Measures Controlled blasting technique will be adopted in this project in order to reduce blast vibrations. Further, charge per delay shall be regulated to minimise blast vibrations. Proper hookup is adopted while firing the drill holes. Moreover the experience in other Block-C and other OCs would be gainfully utilised to limit the ground vibration levels within the prescribed limit of 50-70 mm/sec. In practice, this is kept much less to about 10mm/sec. In addition, the following guidelines are being adopted wherever required to check the ground vibrations:



6.6

1. Optimum delay sequence and stem to column ratio shall be maintained to minimise the fly rock distance and ground vibration intensity.

2. Basing on the distance of the nearest sensitive areas from the epicentre of the blast, charge weight shall be altered to meet the stipulated standards.

3. Design of optimum blast hole geometry considering bench height, diameter of hole, type of explosive, nature of rock, level of fragmentation required etc.

4. Divide total charge / blast in several parts so as to keep minimum explosive per delay i.e. use of milli-second delay detonators & relays.

5. Avoid concentration of explosive by using deck charging.

(b) Fly Rock Control Measures There are a large number of factors that influence fly rocks. Most important of these factors are long explosive columns with little stemming at the mouth of the hole, irregular shape of face, long water column in holes, loose stones on face or on the surface blasting area and strong wind. However, certain preventive measures will be taken to minimise the risks arising from flying fragments. These are:

� Marking of danger zone: The area falling within 500 m of the blasting area will be marked off as danger zone with red flags or other appropriate signs, and entry of any unauthorized person into this zone will be prohibited during blasting operation.

� Warning signals: An audible warning signal will be given, fifteen minutes before actual firing of blast to enable persons to move out of danger zone. For this purpose, a set of sirens/hooters are being provided at appropriate places.

� Providing blasting shelters: In order to protect the personnel engaged in blasting operations, blasting shelters will be provided in close proximity to the site of blasting, for taking shelter during blasting.

(c) Air Blast Control Measures The release of explosive energy through air and movement of fragmented rocks primary causes for noise and air over pressure during blasting. Adoption of following measures while carrying out blasting operation will help in reducing the intensity of air blasts and will also minimise the noise level associated with the air blasts. The measures suggested are:



6.7

� Avoiding overcharging of blast holes � Adequate stemming � Maintaining proper inter-hole & inter-row delays.

Special precaution while working over the U/g developed galleries: Drilling and blasting over the underground developed galleries poses a major hazard compared to that of over the virgin patches. Apart from the standard precautions that are being taken during drilling and blasting operations in the opencast mine special precautions as mentioned below will be taken during extraction of developed pillars. Precautions/ Remedies

� The thickness of parting over developed seam will be maintained not less than 6m to prevent chances of the heavy machinery from falling into the underground workings.

� The actual working plans of the opencast mine and the old plans of the developed underground mine workings will be maintained and checked regularly.

� The galleries and junctions of the developed underground workings plotted accurately and clearly on the plan of the opencast workings and also demarcated on the OB and coal benches.

� Holes are drilled in the pillar and the parting allowed to be dropped so as to fill in the void for easy working of the heavy machinery.

� The spacing of the holes in the last overburden bench (immediately above the coal seam) are so adjusted that the holes do not lie immediately above the galleries, as far as possible, to ensure that the blast holes do not directly fire into the underground workings.

� The depth of hole, in the last overburden bench is ensured in such a way as to leave at least 2 m of thickness of the overburden above the gallery in the coal seam and to ensure compliance with this requirement; a pilot hole is put in for each round of blasting to determine the total thickness of the overburden over the coal seam.

� No blast hole should be connected to galleries. If strata is cracked, bottom 2m of blast hole should be filled with sand.

� For blasting in hot coal strata, special explosives will be used after bringing down the blast hole temperature to below a certain permissible limit (80°C) with



6.8

the help of water. Blasting operations should be carried out within 2 hours after charging of explosive.

� Slurry/Heat resistance emulsion explosives should only be used in case of blasting in hot strata.

� The manner of extraction of pillars is by drilling and blasting holes in the coal pillars only from top downwards.

� No delay detonators should be used for blasting in coal. � All blast holes in last OB bench and in coal should be charged with water

ampoules or with moist sand for at least 0.6m in length, at the bottom of the hole.

� Blasting pattern and area to be blasted should be carefully evolved for better fragmentation and more safety.

The blasted coal should be evacuated as early as possible. During blasting bottom initiation system should be adopted.

6.4.3. HAUL ROAD MAINTENANCE

Haul roads will be made flatter at 6% gradient for safe operation of dumpers. Drains will be provided on either side to keep the road dry. Sharp curves are avoided. Proper lighting and signboards all along the roads will be provided. The haul road width of 30 m has been designed considering space for dozer track, pipes, electric lines, cables. The following precautions are being taken to avoid accidents in haul roads:

� Haul roads are designed in such a way to have one way traffic where ever possible.

� Where one way is not possible there the haul road is sufficiently widened. � Proper lighting and signboards all along the haul roads will be provided. � Separate haul roads will be provided for coal and OB transportation. � Proper drains will be planned along the haul roads. � Separate way for light vehicles is maintained. � Human movement in the haul roads is avoided.

6.4.4. MOVEMENT OF HEMM

Most of the accidents during plying of dumpers, trucks and other heavy vehicles are often attributable to mechanical failures, in which the factor of human errors cannot be ruled out.



6.9

Control Measures

Measures to prevent accidents due to trucks and dumpers are as under:

• All transportation within the mine working should be carried out directly under the supervision and control of the management,

• The vehicles should be maintained in good condition and checked thoroughly at least once a week by the competent person authorized for the purpose by the Management,

• Sufficient lighting and road signs should be provided at each and every turning point specially for the guidance of the drivers at the night,

• To avoid danger to human life while reversing the trackless vehicles especially at the embankment and tipping points, these areas should be maintained human free.

• A statutory provision of the fences, constant education, training etc. should be done to reduce such accidents.

6.4.5. SIDE/SLOPE STABILITY

Collapse of sides is likely to pose problems in opencast mines. Proper benching and sloping should be ensured in this project. All moving benches will be maintained at 70 degrees and final slopes at 45 degrees. For slope stability, special care is taken while forming the batter in fault zone if encountered by pre-split blasting. As per the permission conditions stipulated by DGMS and as per the field conditions the following design criterion is being adopted for waste dumps. External Dump Yard

i) Separate spoil dumps are proposed for Topsoil. ii) Maximum height of Topsoil should be 10 meters. iii) Hard OB should be dumped in such a way that height of each deck should not

be more than 30 m. iv) Width of the dump deck should be 30m. v) Dump slope for each deck should be at an angle of natural repose 37½0 from

horizontal and Overall slope should be maintained at 280 from horizontal. Track dozers are deployed for shaping the dumps. These measures will help in better stabilization of dumps and reduction of soil erosion.



6.10

However the following additional precautions will be taken to improve the stability of benches.

1. Drains will be provided to protect the slope surfaces against rain-cuts and seepage during rains. These make a safe way to discharge top and surface water to the bottom of the dump.

2. Planting of trees improve the stability of dumps to prevent erosion. 3. Constant vigilance will be maintained on the conditions of dumps with special

reference to accumulation of water and development of cracks. 4. If heavy rains are anticipated stabilization of dumps by construction of gabion

retaining wall will be ensured.

6.4.6. Over Burden Dumps

The high overburden dumps may cause landslides. High overburden dumps created at the quarry edge may cause sliding of the overburden dump or may cause failure of the pit slope due to excessive loading, thereby causing loss of life and property. carbonaceous shales and thin coal partings when dumped along with overburden or backfilled in quarries may lead to fire hazards. Siltation of rivers, canals may also cause run off from overburden dumps.

Preventive Measures � A sturdy stone wall should be built around the toe of each active dump at a

distance of about 50 m from the toe, � Where overburden material contains coal, people would often approach the

dump at night to pilfer the carbonaceous material. Hence, patrolling by security guards should be arranged to control the pilferage.

� To prevent failure of overburden slopes, especially during rainy season, following precautions should be taken against this hazard : • Proper terracing of the dump slopes, with maximum bench height of 30

meters and decks of 30m width are being maintained. � Planting vegetation as early as possible over the overburden dump slopes, � The drainage channels along the overburden dump toe will be maintained to

provide additional protection,



6.11

� If the quarry is abandoned, the coal bench and overburden dump should be separated from each other by digging a trench of 6 to 10 m width up-to the non-carbonaceous and/or incombustible rock below the coal seam.

6.4.7. Loose Dumps Of Coal

Dumps of loose coal, if left for long are likely to result in heating. Loose coal heaps will be dozed and lifted on first dumped first dispatched basis.

6.4.8. Fire Fighting

In the Block-D the U/G left over deposit is being worked by opencast method. The crushed coal in the developed workings might catch fire due to spontaneous heating. To prevent such occurrence, sufficient arrangements will be provided for fire fighting and control right from the beginning of the mine. Well trained separate fire fighting crew is formed for this purpose. While working in the area, where coal seams are developed, adequate safety precautions will be taken to ensure safety of men and machinery from probable coal fires. The main precautions that should beg taken while working over the U/G galleries are as follows:

� The thickness of parting over developed seam should be ensured not less than 6m so as to prevent fractures extending to the exposed floor and also to prevent heavy machinery from falling into the underground workings.

� To prevent spontaneous heating of crushed coal in developed workings, Fire fighting and control measures should be taken on regular basis.

� Separate fire fighting crew trained for fighting the fires should be maintained. � Water jets are maintained to control fire/heating, if not practicable, the area

should be blanketed with OB material. � To avoid spread of fire/heating trench cutting and filling up with OB will be used

to isolate the fire. � Fire fighting plan will be prepared and implemented to combat anticipated and

unexpected fires.



6.12

� To deal with fires, various control techniques like digging out, trenching, sealing, hydraulic sand-stowing, flushing with water/bentonite mixture through boreholes, inert gas infusion and isolation may also be followed.

� To prevent and control fire, the contact time of cracking coal with oxygen in the air shall be less than the time of incubation period of ignition. Hence the coal exposed will be evacuated as early as possible.

� Ensure minimum exposure of coal benches upto 100m in length. � Blanketing of exposed galleries with overburden. � To lower the chemical activity of coal the exposed coal is to be treated with

anti-pyrogen like Hygroscopic – Calcium Chloride, Magnesium Chloride, Sodium Chloride & Dolomite powder.

� Fire fighting ranges will be laid along the spoil heap side and along high wall with sufficient water pressures for controlling the environment within 40m of the active working face.

� In each shift a fire fighting crew with a supervisor will be engaged for fire fighting and quenching works.

� Compacting and consolidation (surface amelioration) of the bench will be done after blasting to prevent breathing in air.

6.4.9. INUNDATION The area is drained by two ephemeral streams i.e., Sonapur nallah (Block-D) and Narsapur nallah (Block-C) flowing in a northeasterly direction. Another nallah flows in the western position of Block-B Extn. (beside Abbapur village). The Narsapur nallah was already diverted along the periphery of the Block-C. The diversions of other nallah are also planned prior to starting of mining operations in Block-B ext and Block-D. The following measures will be taken to avoid the inrush water in to the quarry: Precautions/ Remedies

� Block-C: A bund is constructed between the diverted Narsapur nallah and the quarry to avoid the inflow of water in to the quarry. The top and bottom widths of the bund are 2M and 6M and height is 2M.



6.13

� Block-B Extension: It is proposed to construct a bund against the diverted nallah between the quarry and diverted nallah to avoid inflow of water in to the quarry. (Length- 1200m, Bottom width-10m and Top width-6m Height-2m, volume of Material required will be 19200Cu.m).

� Block-D: It is also proposed to construct a bund against the diverted Sonapur nallah and drain to counter the inflow of water into quarry. The length of bund is 3286m, the top and bottom width is 6m and 14m. In addition to this following precautions are proposed:

� Sufficient water garlands are planned to prevent inrush of surface water into the quarry from dump yards and catchments water from surface areas.

� Construction/strengthening of berms/bunds on surface along quarry boundary during every rainy season. Suitable monitoring system will be established to take care of any contingencies.

� Proper drains will be cut around the quarry to divert away the water during rainy season, from entering the quarry. The drains are connected to natural drainage system of the area. Sumps and pumps of adequate capacity are provided within the quarry.

� The actual working plans of the opencast mine and the old plans of the developed underground mine workings are being maintained and checked regularly. The HFL of the nallah, river or tank is marked on the plan.

� Proper arrangements for embankment or diversion if any will be made.

6.5. Risk Assessment and Management

It is the overall description of the steps taken to manage risk, by identifying hazards and implementing controls in the work place. Risk management process involves the following steps: a) Induction, Training & Continuous Improvement: SCCL is having training programs for employees, which are being reviewed from time to time against safety



6.14

criteria. The updating of training requirements includes re-training of existing personnel to the new skill level. This is performed on-the-job. When the new skill, procedure, etc., has been taught to an individual and they have been assessed to have achieved that competency and the same is recorded. This allows the mines to track the persons who are qualified in particular tasks. Employees are being prevented performing tasks until they are adequately trained in new procedures and become competent enough to perform the task safely. b) Accident / Incident Reporting & Investigation: This is a standing order to ensure compliance with regulations and to inform mine personnel regarding responsibilities and reporting requirements. It covers-

� Responsibility of those on the site � Immediate response and emergency backup � Notifying key staff of accident � Securing the site � Treatment of any injuries � Investigation and reporting � Review of any recommendations and determining actions.

c) Auditing & Review / Revise: Reviewing the effectiveness of programs within the safety management plan is done at regular intervals. This is an on-going process. This shows whether policies, regulations and expectations are being met or not and with this the systems can be made more effective. Both internal and external audits will be considered. The training given to the auditors will be objective and independent. Management team or the health and safety committee will decide how often audits should be done, what systems or areas should be audited and reporting arrangements. Risk management process is based on the causes and precautions that are being taken in opencast project against such causes, which is explained in detail as below.

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7.1

Chapter 7

Coal Handling, Washing & Mode of Dispatch

7.1 Existing Coal Transport System (Block-C)

There is a pit head CHP at Block-C. The coal produced from the Block-C was handled by this pithead CHP. From this CHP the coal transported to RKP CHP, which is located 50 Km away from the project by road. From there coal used to be loaded in to rakes and sent to customers as per the FSA.

Proposed Coal Transport System (Block-B Ext & Block -D)

A pit head CHP is under construction at the Block-D to handle the coal from the Block-B Extension and the Block-D. The Pithead CHP is envisaged to have facility of breaking and loading into trucks. It is proposed to break the coal to suitable size i.e. (-) 200 mm, for transporting by trucks.

7.2 Handling/Disposal of Rejects:

Coal mined out is crushed and directly supplied to customers. Any shale or stone which forms the part of rejects is dumped in the de-coaled area.

*****



8.1

Chapter 8

Infrastructure Facilities

8.1 Infrastructure Facilities

The existing office buildings, workshops will cater the needs for the expansion project and a pit head CHP is under construction at Block-D. There is no need for additional infrastructure facilities. The list of Statutory and Service Buildings is give n below:

Statutory Buildings: 1) Canteen 2) First aid room 3) Rest shelter 4) Pit head bath rooms 5) Man way 6) Lamp room Service buildings: 1) Pit Office 2) Work shop 3) Stores 4) Vehicle shed 5) Sub station

A plan showing the details of infra structure facilities is enclosed as plate No: VIII. 8.2 Power supply

The source of power for the project is from 132 KV sub-station, Mandamarri. This sub-station is having sufficient spare capacity to meet the power requirement of expansion capacity. One overhead transmission line of 33 KV originating from this sub-station is feeding power to BPA OC-II Expansion project.

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10.1

Chapter 10

Environment Management

10.1. Introduction

10.1.1. General Description

The chapter “Environment Management Plan” gives brief details of the project parameters, existing environmental scenario, the evaluation of the impacts due to the project on the environment and the mitigation measures proposed for abatement of pollution. The EMP aims at preservation of ecological system through in-built pollution abatement facilities in the proposed project.

10.1.2. Project Background on Environmental Perspec tive

The BPA Opencast-II expansion project is having Environmental Clearance issued by MOEF, GOI vide Lr. No. J-11015/147/2005-1A-.II (M) dated: 11.09.2006 for a rated capacity of 0.40 MTPA. The coal reserves planned for extraction were 7.00 Mt from three blocks namely Block-C, Block-B extension and Block-D with an overburden (OB) removal of 45.51 M.Cum and with an average stripping ratio of 6.50. The mining operations in the project were started in the year 2006-07 from the Block-C. The extraction of total mineable reserves (2.40 Mt) from the Block-C was completed by 09.08.2011. Extraction of coal from Block-B Extension and Block-D are not started till now because of delay in diversion forest land. The life of the project was estimated as 18 years. Up to 09.08.2011, 2.40 Mt of coal is extracted by removing 9.61 McuM of OB from Block-C. Now, it is proposed to increase the coal production from the existing BPA opencast-II expansion project from the rated capacity of 0.4 MTPA to 1.00 MTPA. Total balance extractable reserves of the present proposal are 4.60 Mt with balance OB volume of 35.90 M.Cum. The average stripping ratio of the revised proposal is estimated at 7.80. Total land requirement for the project is 191.98 Ha, out of which 137.4 Ha is forest land and 54.58 Ha is non forest land.

10.2. Surface Features

Block-C : This block forms a part of undulatory valley lying between Madaram gutta, Bejal gutta and Magi gutta hill ranges. The Naspur nallah forms the main drainage, traversing right across the block from south to north and north east before joining



10.2

Pulikuntala nallah. This nallah was diverted and the coal extraction in this block is completed. Block-B Extension : This is a gently rolling plain terrain sloping towards east with the topographic elevation varying from 293.45 m above mean sea level (MSL) in the north central part to 301.66 m above MSL in the western part. A nallah namely Beijal nallah flows in the western position of Block-B Extn. (Beside Abbapur village). Block-D : This is a high ground on its southern side sloping to the three sides. Sonapur gutta (hillock) of about 55m above ground level is located in the north-eastern part of the property. Sonapur nallah is flowing across the block.

This is an existing project and no new land is required for this project. There are no Industrial establishments, other pollution sources, wild life sanctuaries, national parks, ecologically fragile areas, archeologically important areas, densely populated areas, defence installations, critically polluted areas within the core and buffer zone of the Project.

10.3. R & R Involved

This project involves displacement of Abbapur and Sonapur villages which are located on Block-B extension and Block-D respectively. The R&R is under process. The total no of PDFs involved is 146 (Abbapur-89 & Sonapur-57). It is proposed to rehabilitate the families of Abbapur village near New Narsapur village and the families of Sonapur near Goleti village. The estimated funds required for implementation of R&R is Rs.13.73 Crores.

10.4. Land Use Pattern

10.4.1. Activity wise Land Use

The BPA OC-II expansion project requires a total 191.98 Ha of land, including 137.4 Ha of forest land. The activity wise Land requirement is furnished in the table no: 10.1.

Table No:10.1

S.No

Particulars Forest Land

Non-forest Land Total

1 Quarry, excavation area. 87.45 3.06 90.51 2 Safe barrier, drainage, protection bund 29.94 1.34 31.28



10.3

Etc 3 Dump yard including drains around the

dump - 23.81 23.81 4 Diversion of Nallah 11.95 1.57 13.52 5 diversion of public road 3.04 2.04 5.08 6 Road between Block-b ext & Block-D 1.92 - 1.92 7 CHP & Service buildings 3.1 - 3.1 8 R&R - 22.76 22.76

Total land requirement 137.4 54.58 191.98

10.4.2. Ownership wise Land Requirement

The detail of present land ownership is given the table no:10.2 below.

Table No:10.2

Land given in Ha. S.No Parameter Total land

Required Land under SCCl

Possession Land to be Acquired

01 Forest Land 137.4 137.4 Nil 02 Non-Forest Land (a) Govt Land 18.25 4.03 14.22 (b) Patta Land 36.33 22.7 13.63

Total Non Forest Land

54.58 26.73 27.85

Grand Total 191.98 164.13 27.85

10.5. Environment Impact Assessment

The major environmental impacts during operational phase of the BPA opencast-II expansion project are generation of dust and noise. Environmental Management Plan (EMP) aims at the preservation of ecological system by considering in-built pollution abatement facilities at the proposed site. In order to maintain ecological balance and to reduce the damaging effects due to the mining operations, various environmental protection measures are envisaged in the Environment Management Plan and it is implemented concurrently with mining operations, which helps in safeguarding the environment and minimizing the ecological imbalance, if any. The likely environmental impacts are described hereunder:



10.4

10.5.1. Impact on Air Environment

Since no chemical process or treatment of coal is involved in coal mining, the only major source of air pollution is the dust generated during various mining operations. The following various mining activities will generate fugitive dust. � Drilling, � Blasting, � Loading and transportation of OB and coal and � Vehicular traffic.

The impact on air quality is however confined more or less to the project area only.

10.5.1.1. Base line Data vis a vis present status

Base line data:

The summary of the ambient air qualities monitored during winter season-2001 indicates that ambient air quality concentration results are found to be well within the standards. The ambient air quality data monitored during winter season-2001 is shown in the Table No: 10.4 at the end of this chapter.

Post Project Monitoring

The summary of ambient air quality data generated for the period November 2010 to October 2011 (while Block-C is in operation) is presented in the Table no:10.5 and for the period April 2014 to September 2014 (post closure of Block-C) is presented in the table no:10.6 at the end of this chapter.

Summary of ambient air quality during November 2010 to October 2011:

The study indicates that the observed concentrations at buffer zone and core zone are well within the standards issued by MoEF vide, GSR 742 (E) dt: 25.9.2000 & National Ambient Air Quality Standards issued by CPCB vide GSR 826 (E), Dt: 16.11.2009 except in the Sonapur village where RPM is slightly above the standards.

In core zone for SPM, maximum concentration of 385µg/m3 and minimum concentration of 165µg/m3 were observed. For RPM, maximum concentration of 181 µg/m3 and minimum concentration of 69µg/m3 was observed. The gaseous parameters viz., sulphur dioxide (SO2) and oxides of Nitrogen (as NO2) are well within the stipulated standards.



10.5

In Buffer zone, for SPM, maximum concentration of 189 µg/m3 at Goleti township, Sonapur village and minimum concentration of 72 µg/m3 at Sonapur village were observed. Average concentrations recorded were in the range of 117.42 µg/m3 to 124.13 µg/m3. For RPM, maximum concentration of 102 µg/m3 at Sonapur Village and minimum concentration of 26 µg/m3 at Soanapur and Abbapur Villages were observed. Average concentrations recorded were in the range of 48.58 µg/m3 to 52.83 µg/m3. The gaseous parameters viz., Sulphur dioxide (SO2) and oxides of Nitrogen (as NO2) are well within the stipulated Standards.

10.5.2. Impact on Noise and Vibration Levels

The following are the major noise generating sources from the proposed activity.

� Heavy Earth Moving Machinery � Blasting operation and � Plying of vehicles including transportation of coal.


Baseline data:

The noise levels recorded for Leq (day) and Leq (night) during post monsoon – 2001, winter – 2001, summer–2002, and Monsoon–2002 are given in the table no: 10.7. From the table, it is seen that some of the values obtained during the study period are slightly above the national standards, which is due to vehicular traffic and other local activities.

Table No: 10.7 Results of Noise level studies condu cted (Base line)

Sampling Location Post -monsoon Winter Summer Monsoon

Leq (day) Leq (night)

Leq (day)

Leq (night)

Leq (day)

Leq (night)

Leq (day)

Leq (night)

Standards (Residential) 55.0 45.0 55.0 45.0 55.0 45.0 55.0 45.0 Sonapur village 52.9 39.0 52.7 39.5 48.3 36.9 52.6 39.3 Abbapur village 53.5 41.1 50.1 40.7 54.1 45.1 52.6 40.9

Note: All values are in dB (A) Post Project Monitoring Data:

The details of post project monitoring studies (Leq (day) and Leq (night)) conducted during November 2010 to October 2011 (while Block-C is in operation) are given



10.6

in the table no.10.8. The results of the post project monitoring studies indicate that the noise levels are within the stipulated standards.

Table No: 10.8 Summary of Noise Levels measured during November 20 10 to October 2011

Location

November 2010 to February 2011 March to May 2011 June to August 2011 September to

October 2011 Standard

Leq(day) Leq(night) Leq(day) Leq(night) Leq(day) Leq(night) Leq(day) Leq(night) Leq(day) Leq(night)

BPA OC-II Exp Site Office 65.9 56.3 65.3 56.8 63.8 59.7 67.5 60.1 75 70

BPA OC-II Exp Workshop 71.3 58.9 71.8 61.4 67.3 63.7 66.4 60.9 75 70

Goleti Village 51.5 42.8 52.3 41.6 50.1 41.0 52.1 41.5 55 45

Sonapur Village 48.0 40.0 50.0 41.2 50.5 39.8 49.0 42.5 55 45

Abbapur Village 50.8 40.8 51.9 42.2 52.0 41.6 52.2 41.4 55 45

Bijjal Village 48.1 37.2 51.4 40.9 51.1 41.4 51.7 38.8 55 45

Table No: 10.9 Summary of Noise Levels measured dur ing April 2014 to September 2014 (Post closure of Block-C)

Location Core /Buffer Zone Day Time

Min. Max. 98%tile Standard

BPA OC-II exp site office (CN3).

Core 66.30 71.10 70.90 75

Abbapur village(BN5). Buffer 50.40 53.80 53.80 75 Bijjal Village (BN6) Buffer 51.00 54.30 54.15 55 Sonapur village(BN3) Buffer 53.00 54.60 54.60 55 Gampalapalli village (BN4). Buffer 51.40 54.50 54.35 55

Goleti I&IA(CN1). Buffer(CZ of Goleti 1&IA mine)

63.30 69.40 69.31 75

Location Night Time Min. Max. 98%tile Standard

BPA OC-II exp site office (CN3).

Core 56.30 66.40 65.59 70

Abbapur village(BN5). Buffer 41.10 42.60 42.56 45

Bijjal Village (BN6). Buffer 41.00 43.30 43.28 45 Sonapur village(BN3) Buffer 42.80 44.90 44.86 45 Gampalapalli village(BN4). Buffer 42.00 44.20 44.11 45

Goleti I&IA. (CN1). Buffer(core zone of Goleti 1&IA mine)

53.40 59.40 59.16 70



10.7

Blasting in mining areas may give rise to ground vibrations which may cause damage to nearby structures. Fly rock is another problem that deserves attention. DGMS circular No.7 dated. 29.8.1997 stipulates permissible standards for blast induced ground vibrations. Based on the ground vibration studies made earlier proper care is being taken during blasting operations.

10.5.3. Impact on Water Environment

Mining activities may cause adverse impacts due to pumping of mine water, siltation due to storm water and contaminated water from workshops and domestic wastewater. An impact due to soil erosion during monsoon periods is also significant in nature.

The impacts on water are due to mine seepage and wastewater from other mining activities. The mine discharge water is settled in settling ponds for removal of suspended solids. A part of the treated water is used for various requirements of the project like dust suppression, washing of HEMM, plantation, fire fighting and other domestic purposes. The excess mine water is being discharged into the nearby natural drains after conventional treatment. The effluent generated from washing of HEMM is treated in Oil and grease trap and treated water is reused for plantation within the premises.


a. Surface Water Quality

Base line data:

The summary of the surface water study conducted during the monsoon and post monsoon season of 2001 is shown in the table no: 10.10 at the end of this chapter, which indicates that pH value ranging between 8.2 to 8.9 during the monitoring period. This has reflected in alkalinity and hardness values. The alkalinity values are in the range of 239 to 396 mg/l.

In all the samples the contribution of magnesium is more than calcium to the total hardness, which is reflected clearly from magnesium and calcium values. The dissolved oxygen is ranging between 5.2 to 7.1 mg/l, which implies sustainability of aquatic life. However, all the values of physico-chemical parameters were found to be well within the prescribed limits. The nutrient values in the samples are found to be very low which indicates that agricultural runoff is minimal or very less.



10.8

Post Project Monitoring Data:

Mine Discharge: Mine discharge effluents are compared with G.S.R 742(E), dated 25.09.2000 and found well within the limits given in table No.10.11 at the end of this chapter. Surface Water Bodies :( Diverted Narsapur nallah): The analytical results of the surface water samples along with tolerance limits for various parameters as per the Environmental Standards stipulated by MoEF for coalmines vide GSR-742 (E), dt. 25.09.2000 is shown in the table 10.12 & 10.13 at the end of this chapter. pH values were found to be 7.2. Colour, Nitrates, TSS, chlorides concentrations were well within the tolerance limits.

b. Ground water study

Baseline data:

Ground water quality around the project site is presented in the table no: 10.14. Data on physical characteristics indicated variations in total dissolved solids in the range of 585 mg/l to 1475 mg/l. The pH range was observed to be between 6.9 and 8.0. The total hardness was observed to be in the range of 302 to 841 mg/l. Chloride and fluoride values of the ground water around proposed site during study period are in the range of 7.30 mg/l to 121 mg/l and 0.331 mg/l to 1.42 mg/l respectively.

Post Project Monitoring Data:

Physico-Chemical characteristics of ground water in the study area of BPA OC-II expansion project for Monsoon season-2011 (while Block-C is in operation) are shown in the table no: 10.15and fro April-2014 to September-2014 (post closure of Block-C) are shown in the table no: 10.16 at the end of this chapter. pH values were in the range between 7.52 and 7.87 in the groundwater samples collected within the study area. The turbidity values were well within the permissible limits. The total alkalinity concentration for all collected samples was below the permissible limit of 600 mg/L.



10.9

The TDS values were below the permissible limit of 2000 mg/L. The total hardness values in the collected samples were observed to be within the permissible limit of 600 mg/L.

The calcium concentration values at all the locations below the permissible limit of 200 mg/L and the magnesium concentration values at all the locations were below the permissible limits of 100 mg/L.

The nitrates concentrations at all the ground water samples observed to be well within the permissible limit of 100 mg/L. The sulphates concentrations in all the ground water samples observed to be well within the permissible limit of 400 mg/L. The fluoride concentration in all the ground water samples observed to be below the permissible limit of 1.5 mg/L. Polynuclear aromatic hydro carbons were below their detectable limits and Pesticides were absent.

From the analytical data it may be observed that the groundwater samples collected at all the locations may be used for drinking purpose in the absence of any alternative drinking water. These ground water samples possess temporary hardness due to the presence of bicarbonates of calcium and magnesium which can be removed by boiling of the water.

10.5.4. Impact on Land Environment

The opencast mining operations like quarrying, dumping of overburden, approach roads, service facilities and diversion of nallahs etc. will result in change of landscape and topography. Mining operations have entailed uprooting of vegetation in the forest area diverted for project. Opencast mining involves removal of large quantity of overburden and dumping outside the quarry in the initial years till sufficient void is created in the quarry for backfilling. The external dumping of overburden is minimized to the extent possible in order to reduce the disturbance to the landscape. In the BPA OC-II Expansion project it is planned to accommodate the OB in the adjacent decoaled pits so as to minimise the external dumping.

10.5.5. Impact on Soil

The topsoil excavated from quarry area will be dumped separately at pre-determined place and subsequently will be utilized for spreading over external dumps as well as back filled areas as a part of reclamation. Precautions will be taken to limit the height of the topsoil dump to 10 meters in order to preserve its fertility and shelf life. The top soil dump will be suitably protected from soil erosion and infertility by planting fodder



10.10

grass and leguminous plants during temporary storage and its shelf-life is maintained.

Base line data:

To assess the baseline soil quality characteristics in the study region, four soil samples were collected within a depth of 1m and analysed. The soil sampling locations and their quality are described in the following table no: 10.17.

Table-10.17 Soil Quality in the Study Region Sl. No.

Parameter Unit RESULT

Project Site

Abbapur Village

Sonapur Village

1 Organic matter % 0.52 1.2 0.37 2 pH -- 7.28 8.51 9.27 3 Electrical Conductivity µs/cm 21.6 116 252 4 Exchangeable calcium meq/ 100 g 2.0 20.3 8.3 5 Exchangeable magnesium meq/ 100 g 3.5 28.1 21.1 6 Exchangeable sodium meq/ 100 g 0.421 1.026 6.447 7 Exchangeable potassium meq/ 100 g 0.309 1.922 2.313 8 Cation exchange capacity meq/ 100 g 6.2 51.3 38.2 9 Exchangeable sodium

percentage of soils % 0.071 0.0207 0.1796

10 Chlorides as Cl mg/gm 19.81 12.38 34.67 11 Phosphates as P mg/gm 0.204 1.147 0.596 12 Sulfates as SO4 mg/gm BDL 7.49 40.59 13 Cadmium as Cd mg/kg BDL BDL BDL 14 Chromium as Cr mg/kg 14.18 10.80 15.04 15 Lead as Pb mg/kg BDL BDL BDL 16 Nickel as Ni mg/kg 18.12 17.89 18.81 17 Copper as Cu mg/kg 13.04 11.40 38.74 18 Zinc as Zn mg/kg 21.9 25.18 33.74 19 Manganese as Mn mg/kg 154 84.0 268.0

Note: BDL: Below Detectable Limit

It may be observed that the soil samples collected represent three different types of soil and the pH is observed to be alkaline at all the locations. The soil analysis results show that the soils in the area are generally good for Agriculture.



10.11

10.5.6. Impact on Forest

Coal mining is a site-specific activity and has to be carried out economically wherever coal deposits occur. Forest land required for this project is 137.40 Ha and the same will be removed during mining operations. Out of the above forest land, 79.85 Ha (58.11%) of forest land will be reclaimed at the end of mining operations. The 40.64 Ha of land will be left as void (Block-D) and 11.95 ha of land used for diversion of nallah will be remained unchanged. The 4.96 Ha of forest land used fro roads will be left fro public use. The total plantation area at the end of mining operations of BPA OC-II expansion project is 169.18 Ha including Block -A dump yard and Block-B dump yard.

10.5.7. Impact on Flora and Fauna

Flora and fauna certificate obtained for this project from competent authority indicated that there are no “endangered” and “endemic” flora and fauna. Hence, conservation plan for protection and conservation of endangered flora and fauna is not required. Beyond mandate SCCL is protecting the surrounding environment with afforestation activities.

10.5.8. Impact on Socio-Economic Environment

In more than 100 years of coal mining in SCCL mining areas, no significant changes have been observed in the traditional way of life and occupation of the local people in coal mining areas. The local people are rather benefited due to the provision of more infrastructure facilities provided by the management. There are avenues for indirect employment facilities in the mine as well as other ancillary activities for the local people with its CSR policy. The project is located in the backward district of Adilabad in Telangana in interior place where the communications and other facilities were very much lacking. The project is provided better communications and standard of life for the nearby villages. The project will directly provide employment to 342 persons. The medical, educational and social benefits are being made available to the nearby civilian population in addition to the workmen employed in the project.

10.6. Time Bound action for Pollution Control

10.6.1. Action Plan for Air Pollution Control



10.12

While complete elimination of dust due to mining operations may not be possible, the following measures will be taken to mitigate the fugitive dust from different operations: � To avoid the dust generation from the drilling operations, wet-drilling methods

will be adopted. � Use of appropriate explosives for blasting and avoiding overcharging of blast

holes. � The volume of dust rising from dumps by the action of wind is controlled

significantly by planting grasses which are soil binding on slopes and plants on dumps soon after their formation.

� Coal and OB transport roads are major source of dust in the mine. To overcome the problems of dust generation, the following steps will be taken: • Black topping of permanent roads like routes to coal handling plant,

permanent internal roads etc., • Water spraying on haul roads and permanent transport routes at required

frequencies. Provision for four mobile water sprinklers (one departmental & three offloading) has been made for this purpose.

• Avenue plantation along roads.

� Plantation around the quarry and OB dump in the form of green belt will be taken up. This serves as a barrier to prevent the dispersion of dust and attenuation of Noise levels.

� Effective dust suppression measures will be taken up at Coal crushers. Crusher house is enclosed to the extent possible and dust suppression arrangement is provided at suitable locations. All conveyors, screens, crusher etc. will be provided with covers to avoid fugitive dust during operation. Some of the measures proposed to be adopted at the surface coal loading points in order to control dust emission include: • Height of fall is minimized at all coal transfer points. • Internal lining of chutes and bins is done to take care of abrasion & dust • Continuous water spraying arrangements will be made for dust suppression

� The exhaust emissions from HEMM containing CO, SOx & NOx will be controlled by strictly adhering to the scheduled maintenance that includes periodical tuning of engines.



10.13

10.6.2. Action Plan for Water Pollution Control

During quarry operations, strata water seeps in to the quarry area, which is pumped out as mine discharge. A part of the mine discharge water is utilized for meeting water requirement of the project like dust suppression, washing of HEMM, plantation etc. The excess water from opencast mining activity, if discharged without appropriate treatment, will cause deterioration of quality of receiving water body mainly due to the presence of suspended solids in mine discharge water. Storm water will cause soil erosion and siltation of watercourses, if suitable measures are not taken. Some of the control measures adopted for controlling water pollution are as follows: � Creation of water storage areas in the quarry for settlement of suspended solids

before pumping water out of the mine. � Garland drains and check dams / rock fill dams are constructed around the OB

dump-A to channelize surface run off and to arrest suspended solids before discharging the run-off water into the natural water regime as well as to prevent storm water from entering the mine area.

Waste water treatment ETP (60KL capacity) was provided at workshop to treat the effluents of workshop. The HEMM and other equipment were shifted to other OC projects. As soon as the mining operations restarted in the project, the effluents of workshop & CHP will be treated through ETP. Periodical monitoring is being carried out to ensure compliance to prescribed standards before discharging into natural water course. As there is no washing of vehicles, there is no out going of effluents from this particular ETP to the natural stream. Scheme for rainwater harvesting for groundwater rec harging Study reports shows that there is no adverse effect on the ground water table due to the mining activities; though SCCL has constructed 2 Nos of rock fill dams and 4 Nos of settling ponds in the project area which also serve the purpose of augmentation of ground water table.



10.14

10.6.3. Action Plan for Noise, Vibration and Fly Ro ck Control

i) Noise Control The noise levels in the mining premises will be kept within the occupational noise exposure limit as prescribed by DGMS. The following strategy is adopted for controlling the generation of undesirable noise.

� Prevention at source, � Isolation of source and � Administrative control

Blasting operations conducted in mining will have certain impact on the animal life present in the adjoining forest. But, the interrupted noise of very short duration (1-2 seconds) is less harmful than the continuous noise. Blasting in opencast mines in particular is of interrupted type activity and that too the event take place only once or twice in a day during mid-day. Other associated opencast activities are also in general interrupted type like drilling and movement of HEMM. Noise level in mine premises will be kept within the occupational noise exposure limit as prescribed by DGMS. General precautions for noise reduction include:

� Creation of green belts of dense foliage in three rows between mine areas and residential colonies which will act as noise attenuator.

� Proper maintenance of machinery including transport vehicles including fine tuning of engines to reduce noise as well as SOx, NOx emissions.

� Protective devices like acoustic wool, earplugs and earmuffs will be provided to the workers working in HEMM where noise levels will be above 90 dB(A).

� Controlled blasting techniques using milli-second delay detonators & relays are being adopted in this project for minimizing noise and blast vibrations.

� Sound and dust proof cabins will be provided in the machines like shovels, dumpers and feeder breakers etc.

� Blasting operations will be carried out with proper hook up and optimum explosive charge.



10.15

ii) Ground Vibration Control Blasting in mining areas give rise to ground vibrations which may cause damage to nearby structures. Fly rock is another problem that deserves attention. DGMS circular No.7 dated. 29.8.1997 stipulates permissible standards for blast induced ground vibrations. Based on the ground vibration studies made earlier proper care will be taken during blasting operations. Controlled blasting techniques will be adopted in this project in order to reduce blast vibrations. Further, charge per delay is regulated to minimise blast vibrations. Proper hook-up is adopted while firing the drill holes. In practice, the ground vibrations will be kept much less than 10 mm/sec. In addition, the following guidelines will be followed wherever required to check the ground vibrations: � Charge per delay is regulated to minimise blast vibrations. � Optimum delay sequence and stem to column ratio is maintained to minimise

the fly rock distance and ground vibration intensity. � Basing on the distance of the nearest sensitive areas from the epicentre of the

blast, charge weight is altered to meet the stipulated standards. � Design of optimum blast hole geometry considering bench height, diameter of

hole, type of explosive, nature of rock, level of fragmentation required etc. � Divide total charge / blast in several parts so as to keep minimum explosive per

delay. � Avoid concentration of explosive by using Deck Charging.

iii) Fly Rock Control There are a large number of factors that influence fly rocks. Most important of these factors are long explosive columns with little stemming at the mouth of the hole, irregular shape of face, long water column in holes, loose stones on face of the surface blasting area. However, the following preventive measures will be taken to minimize the risks arising from flying fragments. Marking of danger zone: The area falling within 500 m of the blasting area is marked off as danger zone with red flags or other appropriate signs to prohibit entry of any unauthorized person into this zone during blasting operation.



10.16

Warning signals: An audible warning signal is given, fifteen minutes before actual firing of blast to enable persons to move out of danger zone. For this purpose, a set of sirens / hooters will be provided at appropriate places. Providing blasting shelters: In order to protect the personnel engaged in blasting operations, blasting shelters will be provided for taking shelter during blasting

10.6.4. Action Plan for Soil, Land Degradation Cont rol

Any mining activity may alter the land use pattern in the operational area. In order to minimise the adverse effects, the following measures are proposed to be undertaken in the proposed project. � Plantation on over burden dumps. � Plantation along the boundary of the minetake area so as to minimise the visual

impact. � Topsoil excavated from the site shall be dumped and preserved separately at

predetermined place for spreading subsequently on external dumps for plantation.

� Back filling of the de-coaled area concurrently with the mining operations.

10.6.5. Action Plan for Forest and Wild Life Conser vation

All the necessary safeguards will be taken to protect adjoining forestland. It is proposed to construct a fence around the quarry so as to restrict the entry of workforce and other people into the adjoining forest thereby protecting the flora and fauna in the adjoining forest. Further, free LPG facility is given to the workforce to avoid the cutting of trees for cooking fuel. There are no wild life sanctuaries within the core and buffer zone of the project.

10.6.6. Action for Socio Economic Development No significant changes have been visualized in the traditional way of life and occupation of the local people in coal mining areas. The local people are rather benefited due to the provision of more infrastructure facilities provided by the management.



10.17

10.7. Year Wise Reclamation of Land Effected

The BPA OC-II Expansion Project produces 45.21 M.Cum of overburden throughout its life from 2006-2007. Out of the total OB it is planned to accommodate about 3.89 M.Cum (8.60%) of OB in the external dump yard and 41.32 (91.40%) of OB in the decoaled areas of other pits. The total quarry area of the BPA OC-II expansion project is 90.51 Ha including all pits. The quarry area of block-B ext and C will be reclaimed at the end of 5th year (final year) leaving Block-D quarry area as void. The year wise reclamation of land effected is given in the table no: 10.14.

Table no: 10.14: The year wise reclamation of land affected is shown below

Stage at the end of (year) Reclaimed area (Ha) 1 0.00

2 21.81 (Block-C) 3 0.00 4 9.92 (Block-B Ext) 5 18.14 (Block-B Ext)

Total 49.87

10.8. Year Wise Programme of Afforestation includin g Stabilization and

Vegetation of Dumps

The total land requirement of the BPA OC-II expansion Project is 191.98 Ha, out of which afforestation will be done in phased manner in an area of 109.98 Ha which includes plantation over the dump yards, block plantation and avenue plantation etc. in addition to the project area, plantation will also be done in an area of 59.20 Ha of Block-A dump yard and Block-B dump yard. Hence the total plantation planned will be 169.18 Ha. The details of stage wise afforestation programme are given below.

S.No Year Plantation Area (Ha) 1 up to 31.03.2014 9.30 2 1st year 15.36 3 2nd year 28.22 4 3rd year 25.21 5 4th year 27.33 6 5th year 63.76 Total 169.18



10.18

10.9. Monitoring Schedule of Environmental Componen ts

10.9.1. Air quality monitoring

Air quality monitoring is essential for evaluation of the effectiveness of abatement programmes and to develop appropriate control measures. SCCL is monitoring ambient air quality in and around the mine as per the frequency stipulated by MoEF and take appropriate air pollution control measures in order to ensure that the concentration of particulate matter, SO2 and NOx are within the limits.

A preliminary field survey was conducted to collect information on sources of air pollution, topography, population distribution, meteorological conditions etc., for establishing a network of stations in core and buffer zone of the project for ambient air quality monitoring.

Ministry of Environment and Forests (MoEF) has stipulated environmental standards for coalmines vide GSR-742 (E), dt. 25.09.2000. These standards being followed for core zone i.e. within the mine boundary.

Parameters:

As per MoEF guidelines, the concentration of Suspended Particulate Matter (PM10 and PM2.5), Sulphur Dioxide (SO2) and Oxides of Nitrogen (NOx) is being monitored in downwind direction, at 500 m from the dust generating sources. SCCL is also monitoring ambient air quality in the nearby villages to assess the impact of mining operations on surrounding habitation.

Frequency of Monitoring:

Ministry of Environment and Forests has stipulated load based frequency for monitoring of ambient air quality in coal mining areas as given below.

[1] Air quality monitoring is being carried out at a frequency of once in a fortnight (24 hourly sampling) at the identified locations near the dust generating sources.

[2] As a result of monthly monitoring, if it is found that the concentration of the pollutants is less than the 50% of the specified standards for three consecutive months, then the sampling frequency may be shifted to two days in a quarter year.

[3] In case the value has exceeded the specified standards, the air quality sampling shall be done twice in a week. If the results of four consecutive weeks indicate



10.19

that the concentration of pollutants is within the specified standards, then fortnightly monitoring may be reverted to.

Methodology: Respirable dust sampler with gaseous sampling attachment is being used for monitoring of air quality for parameters viz., PM10, PM2.5, SO2 and NOx with a sampling frequency of 24 hours duration. Sampling and analysis are carried out as per IS-5182:1999, Indian Standards for measurement of air Pollution. PM10 and PM2.5 is analyzed gravimetrically, SO2 is analyzed by Improved West and Gaeke method and NOx is analyzed as per Modified Jacob & Hochheiser (Na-Aresnite) method.

Ambient Air Quality Standards for Coal mines

The air quality standards prescribed by MoEF for coal mines vide Ministry of Environment and Forests Notification No. GSR 742(E), Dt: 25.09.2000 are furnished in Table no: 10.15 below.

Table no: 10.15 Coal Mines Standards vide GSR 742 ( E), Dated 25.9.2000

Category Pollutant Time weighted

Average Concentration in

Ambient Air Method of Measurement

New Coal Mines

SPM (> 10µm in size)

Annual Average* 360µg/m3 Respirable Particulate Matter Sampler 24 hours** 500 µg/m3

RPM (< 10µm in size)

Annual Average* 180µg/m3 Respirable Particulate Matter Sampler 24 hours** 250µg/m3

Sulphur Dioxide (SO2)

Annual Average* 80µg/m3 1. Improved West & Gaeke

Method

24 hours** 120µg/m3 2. Ultraviolet Fluorescene

Method

Oxide of Nitrogen as NO2

Annual Average* 80µg/m3 1. Jacob & Hochheiser

Modified (Na-Aresnic)

24 hours** 120µg/m3 2. Gas phase

Chemilumine Scence Note: Annual Arithmetic mean for the measurements taken in a year has to be arrived out following the guidelines for frequency of sampling and annual arithmetic mean of 24 -hourly values shall be met 92% of the time in a year. However, 8% of the time it may exceed but not on two consecutive days. In case of any residential or commercial or industrial place falling within or beyond 500 m. of any dust generating sources, the National Ambient Air Quality Standards are made applicable.



10.20

National Ambient Air Quality Standards

New National Ambient Air Quality Standards vide G.S.R. 826 (E) dated 18th November 2009 was made in exercise of the powers conferred by section 6 and section 25 of the Environment (Protection) Act, 1986. These standards are applicable for stations monitored in the buffer zone. The National Ambient Air Quality Standards are furnished in Table no: 10.16 below.

Table no: 10.16 National Ambient Air Quality Standa rds vide GSR 826 (E), Dt.18.11.09

Sl. No. Pollutant

Time weighted average

Concentration in Ambient Air

Method of measurement Industrial,

Residential, Rural and Other Area

Ecologically Sensitive Area

(notified by Central Govt.)

(1) (2) (3) (4) (5) (6) 1. Sulphur Dioxide

SO2, µg/m3 Annual * 50 20 - Improved West and Geake

- Ultraviolet Fluorescence 24 hours ** 80 80 2. Nitrogen Dioxide

NO2, µg/m3 Annual * 40 30 - Modified Jacob &

Hochheiser (Non Arsenite) - Chemiluminescence 24 hours ** 80 80

3. PM10 µg/m3 Annual * 60 60 - Gravimetric - TOEM - Beta attenuation 24 hours ** 100 100

4. PM2.5 µg/m3 Annual * 40 40 - Gravimetric - TOEM - Beta attenuation 24 hours ** 60 60

5. Ozone (O3) µg/m3 8 hours ** 100 100 - UV Photometric - Chemiluminescence - Chemical Method 1 hour ** 180 180

6. Lead (Pb) µg/m3 Annual * 0.5 0.5 - ASS / ICP method after sampling on EPM 2000 or equivalent filter paper

- ED-XRF using Teflon filter 24 hours ** 1.0 1.0

7. Carbon Monoxide (CO) mg/m3

8 hours ** 2 2 - Non dispersive Infra RED (NDIR) Spectroscopy 1 hour ** 4 4

8. Ammonia (NH3) µg/m3

Annual * 100 100 - Chemiluminescence - -Indophenol blue method 24 hours ** 400 400

9. Benzene (C6H6) µg/m3

Annual * 5 5 - Gas chromatography based on continuous analyzer

- Adsorption and Desorption followed by GC analysis.



10.21

10. Benzo (a) Pyrene (BaP) Particulate phase only ng/m3

Annual * 1 1 - Solvent extraction followed by HPLC / GC analysis

11. Arsenic (As) ng/m3

Annual * 6 6 - AAS/ICP method after sampling on EPM 2000 or equivalent filter paper

12. Nickel (Ni) ng/m3 Annual * 20 20 - AAS/ICP method after sampling on EPM 2000 or equivalent filter paper

Annual arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week 24 hourly at uniform intervals.

24 hourly or 8 hourly or 1 hourly monitoring values, as applicable, shall be complied with 98% of the times in a year. 2% of the time, they may exceed the limits but not on two consecutive days of monitoring.

Note: Whenever and wherever monitoring results on two consecutive days of monitoring exceed the limits specified above for the respective category, it shall be considered adequate reason to institute regular or continuous monitoring and further investigation.

10.9.2. Water quality monitoring

Water quality monitoring involves periodical assessment of quality of mine discharge water, treated workshop effluents, CHP effluent, treated colony effluents, ground water and surface water.

The following parameters are being periodically monitored in effluents in a coal mining industry as per the Environmental Standards for coalmines, GSR - 742 (E), dated 25.09.2000.

Parameters:

[1] pH [2] Total Suspended solids [3] Chemical Oxygen demand (COD) [4] Oil & Grease

All the parameters as given in Part-A of General Standards for discharge of environmental pollutants, GSR 801 (E) EPA 1986 prescribed by CPCB is being analyzed for all the effluents , in addition to the above parameters, once in a year for assessing the overall quality of effluents.



10.22

Frequency of monitoring: Monitoring of waste water samples for four parameters should be done at a frequency of once in a fortnight.

Methodology:

The sample collection, procedures for sample preservation and methods of analysis are followed as per Standard Methods of Water and Wastewater Analysis, American Water Works Association (AWWA), American Public Health Association (APHA).

Standards: The standards prescribed by MoEF for effluent water samples are as follows:

[1] pH - 5.5 to 9.0 [2] Chemical Oxygen Demand (COD) - 250 mg/l [3] Total Suspended Solids (TSS) - 100 mg/l

- 200 mg/l (Land for irrigation)

[4] - Oil & Grease (O & G) - 10 mg/l

In addition to the above, the following standards are being followed for complete analysis of surface and ground water samples, once in a quarter year.

Surface water: CPCB Guidelines for water quality monitoring- MINARS / 27/2007-08.

Ground water: CPCB Guidelines for water quality monitoring- MINARS /27/2007-08.

10.9.3. Monitoring of Phreatic surface levels Phreatic surface levels are being monitored throughout the life of the project by a Hydro-geologist to study the impact of opencast mining operations on ground water regime. A net work of observation wells are identified for monitoring of phreatic surface levels. The trend of ground water level fluctuations are being monitored by recording of phreatic surface levels during pre-monsoon and post-monsoon seasons.

10.9.4. Noise level monitoring

Noise level monitoring is being done for achieving the following objectives: (i) To compare sound levels with the values specified in noise regulations (ii) To determine the need and extent of noise control of various noise

generating sources



10.23

(iii) Correlation of noise levels with community response to noise levels Noise level monitoring is being done at the work zone to assess the occupational noise exposure levels. Noise levels will also be monitored at the noise generating sources like coal handling arrangements, HEMM maintenance workshop and also nearby villages for studying the impact due to higher noise levels for taking necessary control measures at the source. Parameters: The noise level recordings are measured in dB(A) Leq values, where dB(A) denotes the time weighted average of the level of sound in decibels on scale A, which is relatable to human hearing. Frequency of monitoring: Monitoring frequency for noise levels shall be once in a fortnight. MoEF has stipulated that noise levels have to be monitored between 6.00 AM to 10.00PM for daytime and 10.00AM to 6.00PM for night time. Methodology and Instrumentation: Precision integrated sound level meters will be used for monitoring of Leq noise levels in dB(A) scale at the work place and also in the surrounding villages. Standards: (i) MoEF has stipulated noise level standards for coalmines as follows: Time duration: 6.00 A.M.- 10.00 P.M. 10.00 P.M. - 6.00 A.M Noise Level: Leq 75 dB(A) Leq 70 dB(A) MoEF has also stipulated ambient air quality standards in respect of noise in Noise Pollution (Regulation and Control) Rules, 2000. MoEF stipulated in GSR-742 (E), dt. 25.09.2000 that occupational exposure levels of noise as prescribed by DGMS should also be followed at work environment. Ambient Air Quality Standards in respect of Noise

Area Code Category of Area/Zone Limits in dB(A ) Leq *

Day Time Night Time

(A) Industrial area 75 70

(B) Commercial area 65 55

(C) Residential area 55 45

(D) Silence Zone 50 40



10.24

DGMS stipulated, vide circular no 18 of 1975, the following standards for attainment in work environment: i. A warning limit of 85 dB(A) is set below which there will be little risk to an

unprotected ear for an eight hour exposure. ii. The danger limit value of 90 dB(A) , above which hearing impairment and

deafness may result from an unprotected ear. iii. A worker should not be allowed to enter, without appropriate ear protection, an

area in which the noise level is 115 dB(A) or more. iv. Personal protective equipment shall be worn, if there are single isolated

outbursts of noise which can go above 130 dB(A) “impulse” or 120 dB(A) “Fast” v. No worker shall be allowed to enter an area where the noise level exceeds 140

dB(A).

10.9.5. Blast vibrations

Blasting operations result in ground vibrations which may damage the nearby structures. Based on the ground vibration studies conducted earlier, proper care is being taken while carrying out blasting operations. The following control measures are being adopted in the BPA OC-II Expansion Project to reduce the blast vibrations.

[1] Basing on the distance of sensitive areas from the epicenter of the blast, the charge weight is being altered to contain the Peak Particle Velocities within the stipulated standards.

[2] Optimum delay sequence and stem to column ratio shall be maintained to minimize the fly rock distance and ground vibration intensity.

Blast vibration study methodology and instrumentati on: Director General of Mines Safety (DGMS), Dhanbad, has stipulated vide Circular No. 7 of 1997 dt. 29.08.1997, guidelines for monitoring of blast induced ground vibrations for preventing damage to surface structures. The transducer shall be placed near the structure on the solid undisturbed ground and should be placed well in contact with the ground. For structural response, the transducers shall be placed horizontally over the wall, floors and ceiling.

The air overpressure and vibration measuring instruments are being used for monitoring of impacts due to blasting operations. The blasting personnel are trained in the operation of equipment so that observations can be made during regular blasting operations.



10.25

Parameters: The peak particle velocity (ppv) has so far been considered the best criteria for evaluating blast vibrations in terms of potential to cause damage. The peak particle velocity is measured in mm/sec and air overpressure is measured in dB(A).

Frequency of monitoring: The ground vibrations and air overpressure are being monitored regularly during blasting operations for continuous supervision of blasting methodology for compliance.

Permissible Standards: DGMS has stipulated permissible limits for blast induced ground vibrations in mining areas. Depending on the type of structures and the dominant excitation, DGMS has stipulated that the peak particle velocity (ppv) on the ground adjacent to the structure shall not exceed the values given in the Table no: 10.17 below.

Table no: 10.17 The Peak Particle Velocity (ppv) at the foundation level of structures in mining areas in mm/s.

Type of structure Dominant Excitation

frequency, Hz < 8 Hz 8-25 Hz > 25 Hz

(A) Buildings/Structures not belonging to the owner

i Domestic houses / structures (kuchha brick & cement) 5 10 15

ii Industrial Buildings (RCC & Framed Structures) 10 20 25

iii Objects of historical importance & sensitive structures 2 5 10

(B) Buildings belonging to the owner with limited span of life

i Domestic houses / structures (kuchha brick & cement) 10 15 25

ii Industrial Buildings (RCC & Framed Structures) 15 25 50

10.9.6. Monitoring of Phase-wise reclamation Progra mme

Project-level environment management committee is periodically inspecting the progress of reclamation activities at the mine concurrent with the mining operations. Project officer will ensure that the reclamation programme as envisaged in the approved EMP is implemented in BPA OCII exp project. Corporate Environment Department will also monitor the progress of reclamation activities at the mine and compliance status of clearance conditions as stipulated by MoEF in respect of land reclamation.



10.26

10.9.7. Vehicular Emission Monitoring

Vehicular exhaust emissions for the HEMM of opencast mines will be being monitored for smoke density in Hatridge Units (%HU) and Light Absorption Coefficient (k/m)

Frequency: Monitoring Frequency for these parameters shall be once in six months.

10.9.8. Heavy metals in coal and particulate matter

Analysis of coal and particulate matter for the presence of heavy metals such as Hg, Pb, Cd, Cr, Ni, As etc.

Frequency: Monitoring Frequency for these parameters shall be once in six months for particulate matter and once in a year for coal samples.

The summarized monitoring programme of post-project environmental status around the project is given in the Table no: 10.18 below.

Table no: 10.18 Monitoring programme of post projec t environmental status

Parameter to be monitored Proposed location

Monitoring Remarks Sampling

duration Frequency

Meteorological Parameters - (Temperature, wind speed and direction, relative humidity, etc)

One station in the mining area

24 hours Continuous Install weather monitoring station in the mining area

Ambient Air Quality monitoring of PM10, PM2.5, SO2 and NOx

One station in the project site and at least three in nearby residential, commercial or industrial areas – one in the upwind and two stations on the downwind directions.

24 hours Twice a week/ fortnight/ two times in a quarter year depending on the pollution load.

Respirable dust sampler



10.27

Noise 3 stations – one station in project site and two in the nearby villages.

24 hours Once in fortnight Precision integrated sound level meter

Monitoring of blast induced ground vibrations

Around the project area - Regularly during blasting operations

Ground Vibration and Air over pressure monitoring instrument

Water samples Samples from the mine discharge, workshop effluents, nearby water bodies and ground water samples from the nearby villages

Once in fortnight for the critical 4 parameters as specified in GSR 742(E) and one sample every year for all the optional parameters as given in GSR 801 (E). IS-2296-1982 for Surface water and BIS 10500 : 1991 for Ground water.

Phyiso-chemical and instrumental methods of analysis

Phreatic surface level

Different observation wells around the project site

One time Pre- monsoon and Post- monsoon

Manually

*****

Table No:10.4 Summary of Ambient Air Quality data monitoring duri ng winter-2001

LOCATION Mini mum Maximum Mean Standard TSPM Goleti township 118 294 172 200 Sonapur village 70 234 140 200 Abbapur village 100 261 144 200 RSPM Goleti township 31 86 60 100 Sonapur village 24 111 57 100 Abbapur village 33 98 55 100 NOX Goleti township 9.9 30.8 16.6 80 Sonapur village 11.5 26.1 16.4 80



10.28

Abbapur village 6.5 34.8 16.2 80

SO2 Goleti township BDL 19.9 10.2 80 Sonapur village BDL 15.7 11.0 80 Abbapur village BDL 13.5 10.1 80 CO Goleti township BDL 2.0 BDL 4 mg/m3 Sonapur village BDL 2.0 BDL 4 mg/m3 Abbapur village BDL 1.0 BDL 4 mg/m3

Note: All Values are in µg/m3 unless mentioned. CO values will be expressed on hourly basis and 1ppm of CO = 1.145 mg/m3.

Table no: 10.5 Summary of Ambient Air Quality data monitoring at Core and Buffer zone of the BPA OCP-II Expansion for the period of November 2010 to October 2011

LOCATION Minimum Maximum Mean Standard SPM BPA OC-II Exp Project

165.00 385.00 250.4 500

Goleti township 92.00 189.00 123.46 200 Sonapur village 72.00 189.00 124.13 200 Abbapur village 79.00 181.00 117.42 200 RPM BPA OC-II Exp Project

69.00 181.00 115.6 250

Goleti township 34.00 68.00 50.83 100 Sonapur village 26.00 102.00 52.83 100 Abbapur village 26 91 48.58 100 NOX BPA OC-II Exp Project

8.00 21.00 12.3 120

Goleti township 8.00 20.00 11.29 80 Sonapur village 8.00 16.00 10.67 80 Abbapur village 8.00 17.00 10.71 80

SO2 BPA OC-II Exp Project

5.00 16.00 9.60 120

Goleti township 5.00 16.00 8.71 80 Sonapur village 5.00 13.00 7.71 80 Abbapur village 5.00 14.00 7.46 80



10.29

Table no: 10.6 Summary of Ambient Air Quality data monitoring at Core and Buffer zone of the BPA OCP-II Expansion for the per iod of April 2014 to

September 2014

Location Type PM10

Min. Max. 98%tile Standard

BPA OC-II Exp Project Core Zone(CA3) 122 182 181.12 250 Abbapur Village Buffer Zone (BA5) 68 91 90.12 100 Bijjala Village Buffer Zone (BA6) 65 88 87.34 100 Sonapur Village Buffer Zone(BA3) 78 116 115.12 100 Gampalapalli village Buffer Zone(BA4) 74 98 96.9 100 Goleti I&IA Core Zone(CA1)

(CZ of Goleti inc.) 118 183 181.02 250

Location Type PM2.5 Min. Max. 98%tile Standard

BPA OC-II Exp Project Core Zone(CA3) 55.4 73.2 73.05 - Abbapur Village Buffer Zone (BA5) 33.4 48.7 48.392 60 Bijjala Village Buffer Zone (BA6) 31.2 43.2 43.09 60 Sonapur Village Buffer Zone(BA3) 43.8 62.6 62.402 60 Gampalapalli village Buffer Zone(BA4) 41.5 56.7 56.37 60 Goleti I&IA Core Zone(CA1)

(CZ of Goleti inc.) 52.6 73.4 72.96 -

Location Type SO2 Min. Max. 98%tile Standard

BPA OC-II Exp Project Core Zone(CA3) 13.1 16.5 16.5 120 Abbapur Village Buffer Zone (BA5) 9.3 13.5 13.478 80 Bijjala Village Buffer Zone (BA6) 10.1 14.1 13.748 80 Sonapur Village Buffer Zone (BA3) 10.9 15 14.846 80 Gampalapalli village Buffer Zone(BA4) 11.5 14 13.978 80 Goleti I&IA Core Zone(CA1)

(CZ of Goleti inc.) 12.3 15.6 15.6 120

Location Type NOx Min. Max. 98%tile STD

BPA OC-II Exp Project Core Zone(CA3) 25 29.5 29.37 120 Abbapur Village Buffer Zone (BA5) 22.7 26.3 26.124 80 Bijjala Village Buffer Zone (BA6) 19.4 25.3 24.794 80 Sonapur Village Buffer Zone (BA3) 22.5 28.8 28.668 80 Gampalapalli village Buffer Zone(BA4) 19.3 24 23.824 80 Goleti I&IA Core Zone(CA1)

(CZ of Goleti inc.) 23.5 31.8 31.602 120



10.30

Table no: 10.10 Physico-Chemical and Bacteriologica l Characteristics of Surface Water at Selected Locations in the Study Ar ea during -2001

Sl. No. Parameter Unit

Standards IS 2296 Result Monsoon season

Post -monsoon season

Location 1 2 1 2 1. PH -- 6.5-8.5 8.3 8.9 8.2 8.3 2. Electrical

Conductivity µS/cm

-- 607 800 705 760

3. Total Dissolved Solids

mg/L 2100 337 440 420 422

4. Total Suspended Solids

mg/L -- <10.0 18.0 <10.0 <10.0

5. Total Alkalinity mg/L -- 239 396 262 381 6. Total Hardness mg/L -- 227 304 272 74 7. Calcium Hardness mg/L -- 30.9 25.7 99.0 40 8. Magnesium

Hardness mg/L --

196 278 173 234

9. COD mg/L -- 26.0 15.0 34 20 10. BOD mg/L -- 12 5 17 13 11. DO mg/L 5 6.2 7.0 5.2 7.1 12. Chlorides as Cl mg/L 600 22.1 19.6 31.5 19.4 13. Fluorides as F mg/L 1.5 0.61 0.82 0.646 0.688

14. Nitrates as NO3 mg/L -- 1.6 2.2 7.4 3.1 15. Nitrites as NO2 mg/L -- 0.03 0.01 0.015 0.010 16. Sulphates as SO4 mg/L 1000 67.2 21.1 67.6 25.2 17. Phosphates as PO4 mg/L -- 0.07 0.72 BDL BDL 18. Sodium as Na mg/L -- 19.7 25.0 35.0 50 19. Potassium as K mg/L -- 2.7 0.54 2.7 1.10 20. Calcium as Ca mg/L -- 12.3 10.3 39.6 23.7 21. Iron as Fe mg/L -- 0.15 0.11 0.309 0.102 22. Born as B mg/L 2 BDL BDL BDL BDL 23. Copper as Cu mg/L -- BDL BDL BDL BDL 24. Lead as Pb mg/L -- BDL BDL BDL BDL

25. Zinc as Zn mg/L -- 0.03 0.07 BDL BDL

26. Oil & Grease mg/L -- <1 <1 6.0 <1

Note: BDL: Below Detectable Limit; Location-1: Goleti tank near Goleti village, Lovation-2: Sonapur nallah near Sonapur village.



10.31

Table no: 10.11 Post project monitoring data of Min e Discharge Water during November 2010 to October 2011

Sampling Location Date of Sampling

Parameters

pH TSS (mg/ l)

COD (mg O2/ l)

O&G (mg/l)

BPA OC-II Expansion mine discharge

Maximum 7.7 40.0 54.0 BDL Minimum 6.5 27.0 36.0 BDL

BPA OC-II Extension Base workshop ETP outlet

Maximum 7.8 42.0 56.0 BDL

Minimum 6.6 27.0 34.0 BDL As per standards GSR

801 (E) 5.5-9.0 100 250 10

Table No: 10.12 Surface Water Quality Data (Duration of Sampling: November 2010 to October 20 11)

Diverted Narsapur Nallah

S.No Characteristics Units Sampling Date IS:2296

Limits 27.01.11 1 Colour Hazen <5 300 2 Odor -- Unobj. -- 3 Taste -- Agreeable -- 4 pH -- 7.2 6.5-9.0 5 Conductivity µmhos/cm 706 -- 6 DO mg/l 5.2 4 7 COD mg O2/l 22 -

8 BOD(3 days at 270 C )

mg O2/l 3 3

9 Total Coliform MPN/100 402 5000 10 TDS mg/l 461 1500 11 Oil & Grease mg/l BDL 0.1 12 Mineral Oil mg/ l <0.2 -- 13 Free Carbon Dioxide mg/l 4.6 -- 14 Free Ammonia mg/l as N BDL -- 15 Cyanide mg/l as CN <0.05 0.05 16 Phenol as C6H5OH mg/l <0.001 0.005

17 Total Hardness as CaCo3

mg/l 292 --

18 Chlorides as Cl mg/l 80 600 19 Sulphate as SO4 mg/l 34 400 20 Nitrate as NO3 mg/l 4.2 50 21 Fluoride as F mg/l 1.1 1.5 22 Calcium as Ca mg/l 34 -- 23 Magnesium as Mg mg/l 50 --



10.32

24 Copper as Cu mg/l <0.05 1.5 25 Iron as Fe mg/l 2.2 50 26 Manganese as Mn mg/l <0.05 -- 27 Zinc as Zn mg/l 1.8 15 28 Boron as B mg/l 0.09 -- 29 Barium as Ba mg/l <0.1 -- 30 Silver as Ag mg/l <0.01 -- 31 Arsenic as As mg/l <0.05 0.2 32 Mercury as Hg mg/l <0.001 -- 33 Lead as Pb mg/l <0.05 0.1 34 Cadmium as Cd mg/l <0.01 0.01 35 Chromium (VI) as Cr mg/l <0.001 0.05 36 Selenium as Se mg/l <0.002 0.05 37 Anionic Detergents mg/l/ <0.05 1 38 PAH mg/l BDL -- 39 Pesticides µg/l Absent -- 40 Insecticides mg/l Absent Absent 41 Percent sodium (%) -- 17.2 --

42 Sodium Absorption Ration

-- 0.71 --

Table No: 10.13 Surface Water Quality Data

(Duration of Sampling: April 2014 to September 201 4)

S. No.

Parameters Unit Test Method

Tolerance Limits IS : 2296-1982

CPCB Water quality Criteria

SW-6 (Narsapur Nala)

Class C Class A Class B

Class C

1. pH - 4500-H+B 6.5-8.5 6.5 -8.5 6.5 -8.5

6.5 - 9 7.9

2. Temperature ºC 2550. B -- -- -- -- 25.1 3. Electrical

Conductivity µmhos/cm 2510-B -- -- -- -- 620

4. Colour Pt-co- 2120. B 300 -- -- -- <5

5. Turbidity NTU 2130. B -- -- -- -- 0.93

6. Chlorides as Cl- mg/L 4500-Cl-.B 600 -- -- -- 30

7. Calcium as Ca mg/L 3500-Ca.B 600 -- -- -- 34

8. Fluoride as F- mg/L 4500-F-.C 1.0 -- -- -- 0.880

9. Total Dissolved Solids at 180o C

mg/L 2540.C 2000 -- -- -- 388

10. Nitrates as NO3 mg/L PDA 50 -- -- -- 0.510

11. Nitrites as NO2 mg/L 4500-NO2-

.B -- -- -- -- BDL

12. Magnesium as Mg mg/L 3500-Mg.B 100 -- -- -- 51



10.33

13. Sulphates as SO42- mg/L 4500-SO4

2-

.E 400 -- -- -- 9

14. Boron as B mg/L 3120-B 1.0 -- -- -- 0.26

15. Total Coliforms MPN/100mL 9221A & B 5000 50 or less

500 or less

5000 or less

110

16. Faecal Coliform MPN/100mL 9221 E -- -- -- -- 33

17. E. Coli Presence / Absence

9221 F -- -- -- -- <1.8

18. Odour TON 2150. B -- -- -- -- No odour observed

19. Dissolved Oxygen mg/L 4500-O.C 4 6 mg/l or more

5 mg/l or more

4 mg/l or more

5.9

20. Bio chemical Oxygen Demand for 3 days 27o C

mg/L IS: 3025 3 2 mg/l or less

3 mg/l or less

3 mg/l or less

BDL

21. Ammonical Nitrogen as NH3-N

mg/L 4500-NH3

-C -- -- -- -- BDL

22. Total Suspended Solids at 105o C

mg/L 2540. D 1500 -- -- -- 6

23. Total Phosphates mg/L 4500-P-D -- -- -- -- BDL

24. Chemical Oxygen Demand

mg/L 5220. D -- -- -- -- 11

25. Oil & Grease mg/L 5520. B -- -- -- -- ,<1

26. Potassium as K mg/L 3500 K.B - - - - 3

27. Sodium as Na mg/L 3500 Na-B - - - 26

28. Carbonates as CO3 mg/L 2320. B -- -- -- -- NIL

29. Bicarbonates as HCO3

mg/L 2320. B -- -- -- -- 338

NTU – Nephelometric Turbidity Unit;TON – Threshold Odour Number; BDL – Below Detection Limit, Detection Limit – Nitrite – 0.02 mg/L; BOD – 3 mg/L; Ammonical Nitrogen – 5 mg/L; Total Phosphates – 0.02 mg/L

Table no: 10.14 Physico-Chemical characteristics o f Ground water in the

study area for Post Monsoon Season-2001

Sl. No.

Parameter Unit

Standards 10500 permissible limit

Post -monsoon season

Location 1 2 3 4 5 6

1. pH -- 6.5-8.5 7.1 7.2 7.1 6.9 7.3 7.3

2. Electrical Conductivity µS/cm

-- 1380 1190 1480 1010 2320 937

3. Total Dissolved Solids

mg/L 2000 830 710 900 585 1475 579

4. Total Alkalinity mg/L 600 109 376 475 500 376 430 5. Total Hardness mg/L 600 370 302 717 327 841 371



10.34

6. Calcium Hardness mg/L 200 262 69 134 25 148 59

7. Magnesium Hardness mg/L 100 109 233 584 302 693 312

8. Chlorides as Cl mg/L 1000 121 53.5 68.0 7.30 170 17.0

9. Fluorides as F mg/L 1.5 0.331 0.739 1.42 0.578 1.02 1.04

10. Nitrates as NO3 mg/L 100 110 21.0 182 6.70 225 13.2

11. Nitrites as NO2 mg/L -- 0.013 0.035 0.037 0.032 0.175 0.140 12. Sulphates as SO4 mg/L 400 125 37.0 37.5 24.2 59.0 25.6 13. Phosphates as PO4 mg/L -- BDL BDL BDL BDL BDL BDL 14. Sodium as Na mg/L -- 240 218 98.5 6.9 154 17.6

15. Potassium as K mg/L -- 4.8 2.2 BDL BDL 25.8 0.58

16. Calcium as Ca mg/L 200 105 28.0 53.5 10.0 59.5 24.0

17. Iron as Fe mg/L 1 0.118 0.391 0.343 0.203 0.373 0.377

18. Born as B mg/L 5 BDL BDL BDL BDL BDL BDL

19. Copper as Cu mg/L 1.5 BDL BDL BDL BDL BDL BDL

20. Lead as Pb mg/L 0.05 BDL BDL BDL BDL BDL BDL 21. Zinc as Zn mg/L 15 0.106 0.459 0.411 1.63 0.115 0.166 22. COD mg/L -- Nil Nil Nil Nil Nil Nil 23. DO mg/L -- 3.0 2.8 3.1 2.4 3.0 2.0

Note: BDL: Below Detectable Limit; Location 1: BW at Goleti township, 2: BW at Sonapur village 3: BW at Abbapur village 4: BW at Asalmada village 5: BW at Narsapur village 6: BW at Bejjal village. Table no: 10.15 Physico-Chemical characteristics of Ground water in the study

area for Monsoon Season-2011

S.No Parameters

Bore

well at

Goleti

Village

Bore

well at

Narsapur

Village

Bore

well at

Abbapur

village Desirable Permissible

Essential characteristics

1 Colour, (Hazen units, Max) <5 <5 <5 5 25

2 Odour Unobj. Unobj. Unobj. Unobjectionable Unobjectionable

3 Taste Agreeable Agreeable Agreeable Agreeable Agreeable

4 Turbidity (NTU, Max) 2.3 0.9 2.3 5 10

5 pH Value 7.87 7.58 7.52 6.5 to 8.5 6.5 to 8.5

6

Total Hardness (as CaCo3)

mg/lit. Max 404 395 388 300 600

7 Iron (as Fe) mg/lit, Max 0.21 0.24 0.09 0.3 1

8 Chlorides (as Cl) mg/lit, Max. 148 125 115 250 1000

9

Residual, free chlorine, mg/lit,

Min BDL BDL BDL 0.2 --

Desirable Characteristics



10.35

10 Dissolved Solids mg/lit, Max 727 696 681 500 2000

11 Calcium (as Ca) mg/lit, Max 78 72 48 75 200

12 Copper (as Cu) mg/lit, Max <0.05 <0.05 <0.05 0.05 1.5

13 Manganese (as Mn) mg/lit, Max <0.05 <0.05 <0.05 0.1 0.3

14 Sulfate (as SO4) mg/lit, Max 72 85 96 200 400

15 Nitrate (as NO3) mg/lit, Max 1.9 0.9 2.7 45 100

16 Fluoride (as F) mg/lit, Max 1.0 1.1 1.0 1 1.5

17

Phenolic Compounds (as

C 6 H5OH) mg/lit, Max. <0.001 <0.001 <0.001 0.001 0.002

18 Mercury (as Hg) mg/lit, Max <0.001 <0.001 <0.001 0.001 0.001

19 Cadmium (as Cd) mg/lit, Max <0.01 <0.01 <0.01 0.01 0.01

20 Selenium (as Se) mg/lit, Max <0.002 <0.002 <0.002 0.01 0.01

21 Arsenic (as As) mg/lit, Max <0.05 <0.05 <0.05 0.05 0.05

22 Cyanide (as CN) mg/lit, Max <0.05 <0.05 <0.05 0.05 0.05

23 Lead (as Pb) mg/lit , Max <0.05 <0.05 <0.05 0.05 0.05

24 Zinc (as Zn) mg/lit, Max 0.34 0.38 0.35 5 15

25

Anionic detergents (as MBAS)

mg/lit, Max <0.2 <0.2 <0.2 0.2 1

26 Chromium (as Cr6+

) mg/lit, Max <0.001 <0.001 <0.001 0.05 0.05

27

Polynuclear aromatic hydro

carbons (as PAH) g/lit, Max. BDL BDL BDL -- --

28 Mineral Oil mg/lit, Max BDL BDL BDL 0.01 0.03

29 Pesticides mg/l, Max Absent Absent Absent Absent 0.001

30 Alkalinity mg/lit. Max 270 272 260 200 600

31 Aluminium (as Al) mg/l,Max <0.02 <0.02 <0.02 0.03 0.2

32 Boron mg/lit, Max 0.19 0.18 0.19 1 5

Table No: 16 Physical-chemical, bacteriological cha racteristics of ground water collected within the study area from April- 2 014 to September-2014.

S.No.

Parameters Unit Test Method IS: 10500 Acceptable Limits

IS: 10500 Permissible Limits

GW-4 (Narsapur Village)

GW-5 (Bija

Village)

GW-6 (Kerilodi)

1 pH - 4500-H+B 6.5 to 8.5

No relaxation

7.4 7.0 7.0

2 Temperature ºC 2550. B -- -- 25.2 25.3 26.1 3 Electrical Conductivity µmhos/

cm 2510-B -- -- 1760 1140 1180

4 Colour Pt-co- 2120. B 5 15 <5 <5 <5

5 Total Hardness as CaCO3 mg/L 2340. C 200 600 568 417 462

6 Turbidity NTU 2130. B 1 5 0.03 0.02 0.04

7 Chlorides as Cl- mg/L 4500-Cl-.B 250 1000 198 141 156

8 Fluoride as F- mg/L 4500-F-.C 1.0 1.5 1.40 0.402 0.674

9 Total Dissolved Solids at mg/L 2540.C 500 2000 1080 700 726



10.36

180o C

10 Calcium as Ca mg/L 3500-Ca.B 75 200 56 133 129

11 Magnesium as Mg mg/L 3500-Mg.B 30 100 104 21 34

12 Sulphates as SO42- mg/L 4500-SO4

2-

.E 200 400 130 80 86

13 Nitrates as NO3 mg/L 4500-NO3-.B 45 No

relaxation 33 33 33

14 Nitrites as NO2 mg/L 4500-NO2- .B -- -- BDL 0.013 BDL

15 Phenolic compounds as C6H5OH

mg/L 5530-D 0.001 0.002 BDL B DL BDL

16 Cyanide as CN- mg/L 4500-CN-.F 0.05 No relaxation

BDL B DL BDL

17 Total Alkalinity as CaCO3 mg/L 2320. B 200 600 483 343 323

18 Hexavalent Chromium as Cr+6

mg/L 3500-Cr+6.B --- ----- BDL B DL BDL

19 Mercury as Hg mg/L 3500-Hg.B 0.001 No relaxation

BDL B DL BDL

20 Boron as B mg/L 3120-B 0.5 1.0 0.15 0.09 0.10

21 Iron as Fe mg/L 3120-B 0.3 No relaxation

0.87 0.23 0.23

22 Barium as Ba mg/L 3120. B 0.7 No relaxation

0.18 0.10 0.36

23 Molybdenum as Mo mg/L 3120. B 0.07 No relaxation

BDL BDL BDL

24 Silver as Ag mg/L 3120. B 0.1 No relaxation

BDL BDL BDL

25 Copper as Cu mg/L 3120-B 0.05 1.5 BDL BDL BDL

26 Manganese as Mn mg/L 3120-B 0.1 0.3 0.24 BDL BDL

*****



11.1

Chapter 11

Mine Closure Plan

11.1. Introduction

11.1.1. Reasons for Closure

The mine will be closed after exhaustion of economical recoverable coal in lease hold area. The mine may be closed on account of other unforeseen reasons i.e., force majeure or government directions etc for which information and notice will be sent to concerned Govt. authorities and departments.

11.1.2. Statutory Obligations

List of all clearances and approvals obtained is furnished below:

Sl.No Subject Status Compliance Report

1 Approval of Revised Mining Plan (0.4 MTPA)

Approved by MoC vide letter No. 13016/6/2006-CA-II, Dt.3-7-2006. Copy enclosed as Annexure-1.

NA

2 Environmental Clearance (0.4MTPA)

Approved by GoI, MOEF vide memo No. J-11015/147/2005-IA-II(M) dated 11-09-2006. Copy enclosed as Annexure-7.

Enclosed as Annexure-7A

3 Tandur Mining Lease for 12611.70 Ha (2nd

renewal)

Sanctioned Vide GO.NO. 3, dated 12/01/2015, which is valid up to 31/12/2034. Copy enclosed as Annexure-8.

Enclosed as Annexure-8A.

4 Consent For Establishment(CFE)

Consent for Establishment was issued by APPCB, GoAP vide order No.APPCB/PTN/NZB/174/HO/2004, dated. 17-02-2005. Copy enclosed as Annexure-9.


5 Consent Order For Operate(CFO)

Consent Order For Operate (CFO) issued by order no.APPCB/PTN/NZB/174/HO/CFO/2012-1834, dated: 07.08.2012. Copy enclosed as Annexure-10.

Enclosed as Annexure-10A

6 Ground Water Clearance Approved vide letter no. 3634/Hg.III[1]/2004 dated 24.03.2005. Copy enclosed as Annexure-11.


7 Approval from DGMS (Block-C)

Approved as per letter No. Hr-2(SZ)/PERM/2006. Dated: 02-02-2007. Copy enclosed as Annexure-17.

NA

8 Forest clearance for diversion of 28.62 Ha

Approved Vide F.No.F(C)A/16.1/74/AP/MIN dt.06-07-2006. Copy enclosed as Annexure-18(A).

Enclosed as Annexure-18C

9 Forest clearance for diversion of 108.78 Ha

Approved Vide F.No. 8-21/2009-FC dated: 04-09-2014. Copy enclosed in Annexure-18(B).

-

10 Explosive Magazine permission

Permitted as per license No:E/HQ/AP/22/510(E34975) & E/HQ22/221(E1935), dated:28.05.2012. Copy enclosed as Annexure-19.

NA



11.2

The commitment by the owner for the compliance of conditions stipulated for the clearances to be obtained was given as Annexure-5.

11.1.3. Closure Plan Preparation

Closure planning is a long term exercise that begins with the commencement of mining operations and continues till post closure. The dynamic nature of closure planning requires regular and critical review to reflect changing circumstances as a result of any operational change, new regulation or new technology and remain flexible enough to cope with unexpected events.

Name & Address of Applicant:

The Singareni Collieries Company Limited, P.O. Kothagudem Collieries - 507 101. Dist. Khammam State: Telangana

Phones: Chairman & Managing Director - 245601 (08744) HYDERABAD Office - 23393746 (040) Director (Planning & Projects) - 242602 (08744) Director (Operations) - 242328 (08744) Chief General Manager (CP&BD) - 242602 (08744) General Manager (Project Planning) - 242395 (08744)

Name & Address of Recognised Qualified Person

Shri K. SAIBABU, Reg.No. 34012/ (12)/2011-CPAM dated 09-11-2011 Deputy General Manager, (Project Planning) The Singareni Collieries Company Limited, P.O: Kothagudem Collieries - 507 101,

Dist.: Khammam, State: Telangana.

Base Dates:

Date of preparation of Mining Plan & Mine Closure Plan- April, 2016

Base date for estimation of reserves and life - April, 2016

WPI considered for estimation of mine closure cost - April, 2016



11.3

11.2. Mine Description

11.2.1. Physiography

Block-C : This block forms a part of undulatory valley lying between Madaram gutta, Beijal gutta and Magi gutta hill ranges. The Naspur nallah forms the main drainage, traversing right across the block from south to north and north east before joining Pulikuntala nallah. This Nallah was diverted and the coal extraction in this block is completed. Block-B Extension : This is a gently rolling plain terrain sloping towards east with the topographic elevation varying from 293.45 m above mean sea level (MSL) in the north central part to 301.66 m above MSL in the western part. Block-D : This is a high ground on its southern side sloping to the three sides. Sonapur gutta (hillock) of about 55m above ground level is located in the north-eastern part of the property. The general elevation of this block varies from 245m above MSL in the north-eastern part to 360m above MSL in the south-eastern part.

11.2.2. Geology

The BPA OC-II Expansion Project consists of three blocks namely Block-C, Block-B Ext and Block-D. It exists in the North-Western extremity of the Goleti-Bellampalli belt and geologically forms an integral part of it. The detailed geology of the BPA OC-II expansion project is described in the chapter-4.

11.2.3. Reserves

The reserves are calculated based on the Iso-chores and seam sections separately. The mineable reserves for opencasting are arrived by deducting 10% losses from GR reserves due to dilution. The details are as follows.

S.No Block Seam Extractable Reserves(Mt)

Reserves already extracted

Balance Reserves

Block-C 1 Middle Seam 1.60 1.60 Nil 2 Bottom Seam 0.80 0.80 Nil Sub Total 2.40 2.40 Nil Block-B Ext 1 Middle Seam 1.76 Nil 1.76 Block-D 1 Top Seam 0.57 Nil 0.57 2 Middle seam 1.31 Nil 1.31



11.4

3 Bottom Seam 0.96 Nil 0.96 Sub Total 2.84 Nil 2.84 Grand Total

7.00 2.40 4.60

The extraction of coal from the Block-C (2.40 Mt) is completed; the balance extractable reserves are 4.60Mt from Bock-B Ext and D.

11.2.4. Production capacity and Life of the mine

The rated capacity of the BPA OC-II expansion project is 1.00 MTPA and the balance life of the project is 5 years from 2016-17.

11.2.5. Mining Method

The Mining Method adopted in the BPA OC-II expansion project is opencast (Shovel-Dumper combination) method. The detailed method of mining is described in the chapter-5.

11.2.6. Coal Handling, Coal Beneficiation and Transp ortation

The details of the coal handling, coal beneficiation and transportation are described in the chapter-3.

11.3. Closure Plan

11.3.1. Mined out Land

As the opencast mining alters the land use pattern in the lease area, reclamation is being done with the following objectives:

• To minimize the adverse affects. • To bring the excavated land area to its pre-mining status as far as practicable. • To improve the landscape in general.

Rehabilitation process in mined-out land shall focus on the following:–

• Restoring the land to its pre-mining land use status or to a land use, that is consistent with the surrounding land fabric.

• Maintaining the long-term stability of affected land to match with the

community and commercial needs the development such as parklands, flora



11.5

fauna sanctuaries, pisciculture ponds and playgrounds with ecological, tourist and commercial values will be planned.

The following measures are proposed to be undertaken in the BPA OC-II expansion project to minimize land degradation.

• The surface areas affected by mining activities shall be re-vegetated preferably with native species and with necessary soil treatment. A nursery is proposed to be developed. The area upon closure can be utilized for commercial forestry/fodder cultivation.

• Plantation on the over burden dumps. • Plantation along the boundary of the lease area so as to minimise the visual

impact. • Most of the top soil excavated from the site will be directly spread on to the

finished OB dumps; a little quantity of topsoil will be dumped separately and preserved at predetermined place for spreading subsequently on external dumps and backfilled areas for plantation.

11.3.1.1. Progressive/concurrent reclamation (Physic al Reclamation)

The BPA OC-II expansion project was started in the year 2006-07 and produced 2.40 Mt of coal with 9.61 M.Cum of OB removals up to 2011-12. The total OB produced during this period was dumped in the back filled area of Block-A. Till now plantation was done over an area of 9.30 Ha. The phase wise reclamation of the mined out land is given below.

Phase – I (Block-B Extension):

The extractable coal and the OB to be removed from the Block-B extension is 1.76 Mt and 13.67 M.Cum respectively.

The coal production at the end of 1st year of this proposal will be 0.76 MT and overburden removal will be 8.31 M.Cum (7.90 M.Cum. of hard OB and 0.43 M.Cum. of top soil). The total hard OB produced in the 1st year will be dumped in the decoaled area of the Block-C. Out of the 0.43 M.Cum of topsoil produced in the 1st year, 0.25 M.Cum of topsoil will be spread over the Block-A dump yard an the remaining 0.18 M.Cum of topsoil will be stored at the temporary storage dump yard over the Block-D area.

The coal production from the Block-B Extension at the end of the 2nd year will be 1.00 Mt and the overburden to be removed will be 5.36 M.Cum (5.23 M.Cum of hard OB and 0.13 M.Cum of topsoil). Out of the 5.23 M.Cum of hard OB, 1.63 M.Cum of



11.6

HOB will be dumped in the decoaled area of Block-C and the remaining 3.60 M.Cum of HOB will be dumped in the external dump yard at Abbapur. The top soil produced will be directly spread on the finished Abbapur external dump yard.

Plantation

At the end of 1st year mining operations, plantation will be done over the Block-A dump yard covering an area of 15.36 Ha and at the end of 2nd year mining operations, plantation will be done over the back filled area of Block-C covering an area of 28.22 Ha.

The cumulative plantation area at the end of 2nd year will be 52.88 Ha.

Phase-II (Block-D):

The total extractable coal from the Block-D is 2.84 Mt and the total overburden to be removed is 21.93 M.Cum. In addition to this a quantity of 0.30 M.Cum of loose OB of the BPA OC-I to be rehandled which is presently over the quarry area of the Block-D. Hence the total OB to be handled during extraction of coal from the Block-D is 22.23 M.Cum.

The excavation of OB from the Block-D will start from the second year of mining operations. Hence in the second year the Block-B Ext and Block-D both will be in operation. The OB produced from the Block-D in the second year will be 2.64 M.Cum (2.20 M.Cum of hard OB and 0.44 M.Cum of top soil). The total hard OB (2.20 M.Cum) and the rehandled loose OB (0.30 M.Cum) will be dumped in the decoaled area of Block-B Extension. The topsoil produced will be spread on the finished Block-C dump yard.

The balance OB to be produced from the Block-D from the 3rd year to 5th year of mining operations will be 19.29 M.Cum (18.91 M.Cum of hard OB and 0.36 M.Cum of topsoil). The total hard OB produced during this period will be dumped in the decoaled area of Block-B and B extension.

Plantation

Plantation during 3rd year to 5th year of mining operations will be done over part of back filled area of Block-C, Abbapur external dumpyard, Backfilled area of Block-B, B Ext other areas such as CHP, Block-D sarounding areas etc. The area of plantation covered in this period will be 116.30 Ha.



11.7

The cumulative plantation area at the end of final ear (5th year) will be 169.18 Ha.

End land use plan / Mine Closure Plan

The BPA OC-II expansion project produces 45.21 M.Cum of overburden throughout its life from 2006-2007. Out of the total OB it is planned to accommodate about 3.89 M.Cum (8.60%) of OB in the external dump yard and 41.32 (91.40%) of OB in the decoaled areas of other pits. Dumping in de-coaled pits is planned to a maximum height of +60 m (Block-A of BPA OC-II) above ground level and external dump is planned to a maximum height of 30 m. Total land required for project is 191.98 Ha including 90.51 Ha of quarry area. After completion of mining operations 109.98 Ha of land will be used for plantation, 27.84 Ha of land used for roads, R&R will be left for public use and 54.16 Ha of land will be water body.

Pre-mining, during mining, post mining & post closure land use pertaining to 169.22 Ha (project area excluding 22.76 Ha of land for R&R) is furnished hereunder:

Pre Mining Land Use "Ha"

Land use

During

Mining

Area (Ha)

Land Use (end of life)

Land Use (Post Closure)

Type

Area

(Ha) Type

Agricultural Land

Plantation

Water Body

Public / Company

Use Total

Tenanc

y

Agricultur

al 13.57

Excavation area.

90.51 Excavation area.

Excavatio

n area. Nil

Govt Non

Forest

Agricultur

al 14.60

Back filled area

Back filled area

49.87 Back

filled area Nil 49.87

49.87

Excavated Void

Excavated Void

40.64 Excavate

d Void Nil

40.64*

40.64*

Safe barrier,

drainage, protection bund etc

31.28

Safe barrier,

drainage,

protection bund

etc

31.28

Safe barrier,

drainage, protection bund

etc

Nil 31.28

31.28



11.8

Water

Bodies

3.65

Dump yard including

drains around the

dump

23.81

Dump yard

including drains around

the dump

23.81

Dump yard

including drains around

the dump

Nil 23.81

23.81

Forest

137.40

Diversion of Nallah

13.52 Diversio

n of Nallah

13.52 Diversion of Nallah

Nil

13.52

13.52

Diversion of public

road 5.08

Diversion of

public road

5.08 Diversion of public

road Nil

5.08 5.08

Road between Block-B

ext & Block-D

1.92


ext & Block-D

1.92


ext & Block-D

Nil 1.92

1.92

CHP, ETP & Service buildings

3.1

CHP, ETP &

Service building

s

3.1 CHP, ETP & Service buildings

Nil 3.10

3.10

Total

169.22

169.22

169.22

Nil** 109.98 54.16 5.08 169.22

Note: *the void area to an extent of 40.64Ha will be used for dumping of OB from proposed Abbapur & Goleti OCP .

** The area pertaining to BPA OC-II expansion Projec t would be utilized for dumping of overburden from proposed Abbapur & Goleti opencast project, hence in the present Mining plan & Mine closure Plan no land is envisaged for restoration to agricultural use.

Native species with economic value will be planted on the reclaimed area after topsoil carpeting, which also helps in controlling soil erosion caused by rain and wind. Extensive plantation will be taken up over the external dump area, back filled area, along the haul roads, approach roads and along the quarry boundary.



11.9

The quarry areas will be surrounded by garland drains with intermediate settling provision so that only clear water is discharged into the natural water body. The mine seepage water will be pumped out & discharged into settling tanks where the coal fines will be settled and only clear water will be discharged into the water body. The area where the mine dewatering ponds are established will be restored and levelled and the site re vegetated, so as to establish the natural drainage of the area.

The Block-C and Block-B Extension will be reclaimed to the ground level at the end of the mining operations. The Block-D void will be left covering an area of 40.64 Ha. This void area will get filled with rain water and surface run off during monsoon and will act as a potential water body which will help in augmenting the ground water table levels. To maintain quarry void pond overflow drainage, maintenance-free open spillways will be made. Further the soil analysis has revealed that no heavy metals or trace elements are present in excess quantities. Hence no separate plan for mine rock pile rehabilitation for control of the chemical reactions generating acid water has been made. However the quality of the water in the void will be periodically assessed and documented. The quality of the water will be compared with IS 2296 standards. The void area will be cordoned off with parapet wall as per the specifications with suitable cautions will be placed before the water body to warn the public.

11.3.1.2. Biological Reclamation

� Green Belt Development Green belt has been recommended as one of the major component of mine closure plan, which will improve ecology, environment and quality of the surroundings of site through: • Mitigation of fugitive emissions • Attenuation of noise levels • Waste water reuse • Development of ecosystem • Creation of an aesthetic environment • Use of waste land to improve environmental quality. The development of green belt at site requires systematic planning.

� Choice of species The selections of species are evaluated through the detailed flora and fauna study as a part of baseline studies in EIA/EMP preparation. The plant species that are



11.10

native to the area and to achieve self sustained ecosystem are preferred in the plantation programme. While considering the above aspects due care is taken for selecting the suitable characteristics of plant species. For selection of species there are three important factors, they are soil, temperature and rainfall. Plantation should be multipurpose which plays an important role for greening, pollution attenuation and for satisfying local demands. For selection of plant species for greenbelt development following criteria is followed: 1. Adaptability to local soil and climate. The trees should be able to grow and

thrive on sandy-saline soil of the area, evergreen in habitat having minimum of leaf fall.

2. The trees must be tolerant to all the pollutants present in the area. 3. The tree must be tall in peripheral curtain plantation and with large and

spreading canopy in the primary and secondary attenuation zones. 4. Should have extensive foliage area to provide maximum impinging surface for

continued efficient adsorption of pollutants. 5. Availability in the neighbourhood nurseries. 6. Minimum maintenance to the growth. 7. Trees should be fast growing, perennially green and preferably of native origin. � General guidelines - Trees growing up to 10 m or more in height should be planted around the installation. - Plantation of trees should be done in appropriate circular rows around the installation in alternate rows to prevent horizontal pollution dispersion. - Trees should be planted along the roadsides to arrest auto exhaust and noise pollution, when viewed from a point outside the foliage perimeter. - Since tree trunks are normally devoid of foliage (up to 3 m) .It is desirable to

plant some shrubs species in front of such trees to give coverage to this portion.

- Fast growing thick perennial foliage should be grown, as it will take many years for trees to grow in their full height.

� Design of proposed greenbelt



11.11

In view of saline nature of soil, accumulation of salts, lack of effective gradient for movement of surface and sub-soil water and constraint on land availability for plantation, it is necessary to identify suitable species and method of plantation. � Plantation on the over dumps:

Plantation should be taken up on the over dumps. Some of the recommended plant species for reclamation on over dumps is given below.

Recommended plant species for reclamation over Dumps.

S.No. Scientific Name (Family) Local Name 1 Dalbergia sisoo roxb(Leguminosae) Sisso 2 Cassia tora Linn(Leguminosae) Chakor 3 Desmodium cephalotes wall(Leguminosae) Chaoti 4 Cynodon dactylon Pers(Graminae) Doob 5 Vetiveria zizanioides(Graminae) Khas

� Plantation along the boundaries: - Trees like Casurina equisetifolia, growing upto 70 feet or more height with

which thick canopy cover and perennial foliage should be planted around the installation in 2 rows at about 3 m interval horizontally and diagonally.

- Acacia auriculateformis should be planted in 2 rows at about 2 m interval horizontally and diagonally. � Plantation along the border of lease area: - Trees like Casurina equisetifolia will be planted along the main entrance wall in

4 rows at about 3m interval horizontally and diagonally. - Acacia auriculateformis will be planted in 3 rows at about 2 m interval horizontally and diagonally. � Plantation along Road side: Road side plantation plays a very important role for greening the area, increase shady area, increasing aesthetic value and for eco development of the area. Plantation will help to build up better ecological system of the area besides containing vehicular traffic emissions. So for plantation of trees guidance from social forestry division of forest authorities is being taken.



11.12

� Plantation Schedule

The total land requirement of the BPA OC-II expansion Project is 191.98 Ha, out of which afforestation will be done in phased manner in an area of 109.98 Ha which includes plantation over the dump yards, block plantation and avenue plantation etc. in addition to the project area, plantation will also be done additionally in an area of 59.20 Ha which falls outside the project area for which estimation is made. The details of action plan for Technical and biological reclamation are given below:

Year

Cumulative area "Ha" Cumulative Plantation area "Ha"

Excavation area

Bac

kfill

ing

Voi

d

Tot

al

Top

soil

Dum

p E

xtn

. Dum

p

incl

udin

g D

rain

Oth

ers

Un-

di

stur

bed

area

Tot

al

Bac

kfill

Dum

p

Gre

en A

rea

Infr

astr

uctu

re/

Bar

ren

Agr

icul

tura

l La

nd

Tot

al

Initial 0 21.81 21.81 0 0 10.07 137.34 169.22 0 0 0 0 0 0

Y-1 19.90 11.94 31.84 4.7 0 29.60 103.08 169.22 0 0 0 0 0 0

Y-2 29.97 43.70 73.67 0 23.81 54.90 16.84 169.22 21.81 0 0 0 0 21.81

Y-3 40.52 45.66 86.18 0 23.81 54.90 4.33 169.22 21.81 9.50 0 0 0 31.31

Y-4 49.87 40.64 90.51 0 23.81 54.90 0 169.22 39.48 19.16 0 0 0 58.64

Y-5 49.87 40.64 90.51 0 23.81 54.90 0 169.22 49.87 23.81 0 36.30 0 109.98

The Back fill area percentage is 55.10% and the plan tation area percentage over mine take area of 169.22 is 64.99%.

Post Plantation Care

Investment on reclamation would be futile without adequate and timely aftercare. After care includes weeding, soil working, mulching, fertilizing and if possible, irrigation to promote better growth of the planted seedlings. The vegetated area should be protected from grazing and browsing of animals until the plants are above the level of damage. Wherever necessary, fencing should be erected on the boundaries of reclaimed areas.

11.3.2. Water Quality Management

11.3.2.1. Details of existing Surface and Ground Water bodies



11.13

The area is drained by two ephemeral streams i.e., Sonapur nallah (Block-D) and Narsapur nallah (Block-C) flowing in a northeasterly direction. Another nallah namely Beijal nallah flows in the western position of Block-B Extn. (Beside Abbapur village). The water flows towards north and joins the Sonapur nallah at Block-D. The basin slope of this area is about 15m/km. Two hills Sonapur gutta (to north-east of Block-D) and Bheemanna gutta (to south-east of Block-C) influence the drainage system of the area.

11.3.2.2. Details of diversions

Diversion of Narsapur Nallah (Block-C):

The Narsapur nallah used flow across the Block-C. This nallah was already diverted along the eastern periphery of the quarry before starting the mining operations in the Block-C. A bund also constructed along the diverted nallah around the quarry.

Diversion of Nallah (Block-B Ext):

The Beijal nallah is flowing along the western side of the Block-B extension. It is proposed to divert this nallah along the western periphery of the block. It is also proposed to construct a bund against the diverted nallah. The length of the diversion is 1.2 KM.

Diversion of Sonapur Nallah (Block-D):

A seasonal nallah namely Sonapur nallah is passing along the middle of the Block-D property. It is proposed to divert the nallah along the periphery of the block. Sonapur gutta is located adjacent to the block on the north-eastern side. It is therefore planned to dig a drain all along the periphery of the block (connecting the diverted Nallah) so as to protect the quarry from inrush of water. The length of diverted Nallah is 3377m.

11.3.2.3. Impact on Water Quality

Mining activities may cause adverse impacts due to discharge of mine drainage, siltation due to storm water and contaminated water from workshops and domestic wastewater. An impact due to soil erosion during monsoon periods is also significant in nature.



11.14

� Sources of Water Pollution Following are the main sources of water pollution during mining activities.

i) Effluents from mines, coal handling plants, service buildings and workshop/maintenance sheds containing greases, oil and suspended particle.

ii) Effluents from residential colony. iii) Storm water causes soil erosion. iv) High turbidity, grease and oil film on water may not allow proper oxygenation

of water. This may affect the aquatic life. v) Deep pit lakes result into density stratification (Meromictic conditions) and

induce water quality degradation. vi) On cessation of dewatering, GW levels recovers to create ‘Pit Lake’ within the

mine void, thereby initiating geo-chemical and hydro-geological processes with time. Pit lakes are hydraulically connected with GW systems.

11.3.2.4. Pollution control Measures

The following control measures being taken up at the mine to control the water pollution: 1. Creation of water storage areas in the opencast mines for settlement of

suspended solids before pumping the water out of the mine. 2. Provision of oil and grease traps in HEMM workshops for cleaning effluents and

their subsequent recycling. 3. Construction of garland drains along the dumps and along the lease area to

restrict the suspended solids entering into the natural water regime as well as to prevent storm water entering the lease area.

4. Establishing septic tanks followed by soak pits shall treat the domestic wastewater generated from the mine office.

5. Check dams/rock fill dams would be constructed wherever necessary to reduce siltation and suspended solids.

� Handling and disposal procedure of waste oil: The waste oil form the oil separator will be collected in barrels and are properly sealed so as to avoid further spillages. Before sealing, the barrels will be thoroughly checked for any leakages. The sealed barrels will be stored separately till they are sold/disposed off to the authorized agents as per the norms.



11.15

Treatment and Disposal of domestic and mine effluents: The major effluent source will be mine water pumped out from the excavated pits, which will be let off in the natural streams after settling (primary treatment). The other source of concern would be the domestic and service building effluents, which will be let out into the receiving public water body after treatment. The sewage water let out at the project site will be treated through septic tank followed by soak pits. Wastewater from workshops shall be treated in oil separators before discharging into the receiving water bodies. The flow chart showing the waste water treatment is shown at the end of this chapter.

11.3.2.5. Water balance statement

Water balance within the buffer zone i.e. 10Km from the boundary of the project being estimated using Groundwater Estimation Committee-97(GEC 97) methodology in which the total recharge within the study area being estimated through groundwater fluctuation and recharge estimation methods and the total draft being estimated from the coal mines, industries, domestic, cattle, agricultural consumption.

Based on the above, a flow diagram of hydrologic system is prepared and furnished as below:



11.16

FLOW DIAGRAM OF HYDROLOGIC SYSTEM IN NATURAL CONDITIONS

Precipitation:

Zone of aeration

Cap

illar

y

Total Draft: 5.97 MCuM/ Yr

Let out into streams/tanks: 3.49 MCuM/Yr

Surface water

Dow

nwar

d

Evaporation

Domestic consumption 1.00 MCuM/ Yr

Surplus ground water available: 21.41 MCuM/Yr

Land surface Infiltration :

27.09 MCuM/Yr

Bodies of surface water Direct run off

Zone of saturat ion (Net ground water available): 27.38 MCuM/Yr

ATMOSPHERE

Natural discharges & other losses:

(-) 3.04 MCuM/Yr

Recharge from other sources: 3.33 MCuM/Yr

Seepage

See

page

and

spr

ing

Infiltration

Cattle consumption

0.10 MCuM / Yr

Agriculture consumption: 0.12 MCuM/ Yr

Mine water Pumping:

4.75 MCuM/ Yr

Sedimentation

Tank

Mine use: 0.83 CuM/Yr

Domestic use: -0.39 MCuM/Yr

Plantation use: 0.03 MCuM/Yr

Oil & grease trap

Soak Pit



11.17

11.3.2.6. Acid Mine Drainage

In Bellampalli area, there is no acid mine drainage problem. This was established by study of the ground water samples were collected from the identified bore wells/hand pumps in Abbapur, Goleti, Borjam and Devaigudem villages. The study reveals that the average PH values are in the range of 8.35 to 8.81. Hence, there is no Acid Mine Drainage problem in BPA OC-II expansion project area.

11.3.3. AIR QUALITY MANAGEMENT

11.3.3.1. Impact on Air Quality Since no chemical process is involved in the project, the only major source of air pollution during mining activities is generation of fugitive dust during drilling, blasting, loading, transportation operations and exhaust emissions of heavy earth moving machinery. The impact on air quality will however be confined more or less to the project area. The major pollutants expected are suspended particulate matter.

11.3.3.2. Control Measures

As discussed earlier, mining activities will generate large quantities of dust during drilling, blasting, loading and transportation operations. The following measures will be taken to mitigate the fugitive dust from different operations. • To avoid the dust generation from the drilling operations, wet drilling methods will

be adopted. • Drill machines will be equipped with dust collectors. • Use of appropriate explosives for blasting and avoiding overcharging of blast

holes. • Watering of haul roads and other roads at regular intervals • Dust suppression by hydro-jet spraying at receiving point and loading point. • The exhaust emissions from HEMM containing CO, SOx & NOx will be controlled

by strictly adhering to the scheduled maintenance that includes periodical tuning of engines.

• Spraying of water on permanent transport roads at required frequencies. • Provision of green belt by vegetation for trapping dust. • Greenbelt development along the haul roads (aboriculture), dumping yards and

along the boundaries of the lease area. • Plantation over overburden dumps.



11.18

The extracted coal should be transported from the quarry to the CHP by adopting following measures so as to minimize dust emissions.

� Water sprinkling should be done prior and after loading into the trucks. � In case of long transportation the trucks after loading should be covered with

tarpaulin. � Speed of the vehicles should be maintained within the prescribed limits. � Trucks should not be over loaded and should be maintained to the body level

11.3.4. Waste Management

The type of rejects from opencast mine is mainly overburden. During the process of extraction of coal, the overlying strata consist of top soil and sedimentary rock formation shall be removed separately as overburden. The rated production capacity of BPA OC-II expansion project is 1.00 Mtpa. The balance life of the project will be 5 years from 2016-17.

The BPA OC-II expansion project produces 45.21 M.Cum of overburden throughout its life from 2006-2007. Out of the total OB it is planned to accommodate about 3.89 M.Cum (8.60%) of OB in the external dump yard and 41.32 (91.40%) of OB in the decoaled areas of other pits. The following design criteria have been considered for overburden dumps:

i) Top soil will be preserved separately. ii) Height of the OB dump in each deck will be 30m. iii) Width of the berm will be 30m. iv) Dump slope for each deck to be at natural repose of 37½0 and overall slope

of the dump at 280 from the horizontal. v) Track dozers will be deployed for shaping the dumps vi) Maximum height of dump is 60m above ground level in the backfilled area

dumps (Back filled area of Block-A) and about 30m above GL in external dump (Abbapur Dump yard).

vii) Garland drains and rock fill dams will be constructed around the dump to regulate surface run-off and control siltation of surface water bodies.

The external dumps and back filled areas will be graded after reaching planned final height. Basing on the availability of the non-active dump zone, topsoil shall be spread over the OB dumps for taking up plantation.



11.19

Plantation shall be taken up over the external dump, back filled areas, along haul roads approach roads, around service building and along the quarry boundary.

11.3.5. Top Soil Management

The formation of topsoil is a very slow process; typically, it takes around 100 years per inch. Topsoil is formed by the weathering of rocks and the subsequent addition of organic matter from decaying plants, animals, mosses, etc. Decaying plant matter enriches the soil, adding the nutrients and minerals essential to support plant life.

Adequate care will be taken to preserve the top soil in temporary dump yards and spread over the dump yards in the later part. It is being protected from soil erosion and infertility by planting fodder grass and leguminous plants during temporary storage. A detailed account of top soil management is given under 5.15 of chapter-5

11.3.6. Management of Coal Rejects From Washery

BPA OCP-II expansion project produces G-8 to G-9 grade coal. Since, coal (ROM) is directly used as solid fuel by the industries, no beneficiation is proposed.

11.3.7. Infrastructure

List of infrastructure facilities are,

List of Infrastructure:

Statutory Buildings:

• Canteen • First aid room • Rest shelter • Pit head bath rooms • Man way • Lamp room

Service buildings:

• Pit Office • Work shop • Stores



11.20

• Vehicle shed • Sub station • Water supply lines • Power transmission & communication lines • Administrative buildings and Roads

All the above infrastructure facilities provided for the existing project will be continued for use for the expansion of the project i.e. BPA OC-II expansion project . In addition a CHP is under construction near Block-D to handle the coal from Block-B extension and Block-D.

The infrastructure proposed in mining plan shall be maintained up to the end of the life of the mine. Proper maintenance of infrastructure shall be carried out for their physical stability.

The details of all the Infrastructural facilities along with their status at the end of mine closure are furnished hereunder in the table.

Sl. No.

Description Retained/Demolished

1 Canteen Proposed to be demolished 2 First aid room Proposed to be demolished 3 Rest shelter Proposed to be demolished 4 Pit head bath rooms Proposed to be demolished 5 Man way Proposed to be demolished 6 Lamp room Proposed to be demolished 7 Pit Office Proposed to be demolished 8 Work shop Will be removed & shifted to other mines 9 Stores Will be removed & shifted to other mines 10 Vehicle shed Will be removed & shifted to other mines 11 Sub station Will be removed & shifted to other mines 12 Water supply lines Will be removed & shifted to other mines 13 Power transmission & communication lines Will be retained & used for public use 14 Administrative buildings and Roads Proposed to be demolished

1. Service buildings and other structures All buildings and other concrete structures (which are not useful) will be razed down and the waste will be dumped in low lying areas or voids of decoaled areas and top soil shall be spread over for re-vegetation.



11.21

2. Support & Transport infrastructures

All buried infrastructure like tanks, pipes, cables shall be removed. If the same are required to be maintained for future use the same shall be documented. The main mining site and secondary access roads shall be kept in a condition to access for monitoring/ inspection. The roads, bridges, culverts etc., which are not required to maintain shall be razed and restored for planting with local vegetation.

3. Sanitary installation

After being emptied, decommissioned septic tanks shall be removed or completely filled with gravel, sand, earth or inert material. Wastewater treatment ponds (domestic waste) shall be emptied and backfilled or provided drainage so as not to create stagnant water ponds.

4. Petroleum products and Hazardous waste

The rehabilitation of all petroleum products sites used for storage of fuels and lubricants and the measures taken to rehabilitate these sites shall be made as per Hazardous waste (Management, Handling and Trans boundary Movement) Rules, 2008. All surface or buried petroleum product tanks, pipes and storage vessels shall be removed from the site. All hazardous waste shall be removed from the mining site after activities are permanently shut down. Used oil shall be sent to authorised reprocessing agencies/units approved by SPCB. Other hazardous waste shall be properly disposed, preferably by sending to an authorised reprocessing agencies/units approved by SPCB.

5. Socio-economic changes etc.

The options like undertaking commercial forestry, fodder cultivation, fuel wood growing shall be reviewed in the mined-out land for having a gainful resource for the neighboring local Communities.

6. Sewage sludge from treatment ponds shall be used as fertilizer and if not

suitable for use as fertilizer shall be disposed in a sanitary landfill or other authorized site.

7. Water Resource Management The area where the mine dewatering ponds are established shall be restored and leveled and the site re-vegetated so as to establish the natural drainage of the area.



11.22

11.3.8. Disposal of Mining Machineries

The machinery used for mining activity shall be shifted to other mines after closure of the mine.

1. Equipment & electrical infrastructures (RCC Pillars, Electrical Cables, Transformers, etc) shall be dismantled. Off-site equipment shall be dismantled, but may remain in place if there is a future potential use of it.

2. Surface equipment & heavy machinery like mining equipment (hoists, pumps, conveyors, etc.), shall be removed from the site by the proponent.

3. Roads, electric transmission lines, water pipelines, sewage lines etc. shall be removed from the site after proper checking to avoid land contamination for post mining land use.

11.3.9. Safety & Security

SCCL proposes to erect fencing around the project area and shall ensure that access to the area is totally sealed off. Trained security personnel will be posted to guard the area as per requirement. Only authorized personnel will be allowed to carry out abandonment and post-project monitoring activities. It is also proposed to fence the quarry area as a precaution against drowning in residual lake. Fund provision of Rs. 0.575 Cr is made for the same in the mine closure cost.

11.3.10. Economic Repercussions Of Closure Of Mine

The applicant, the Singareni collieries company Limited, having the distinction of being the first Government owned coal company in India, has been engaged in coal mining activity for well over a century since it started exploiting coal in 1889.

Being the only coal company in south India, SCCL holds Mining Leases for coal in Khammam, Warangal, Karimnagar and Adilabad districts of Telangana. The mining rights of SCCL cover a stretch of 350 km, in Godavari valley with proved coal reserves of about 10073.54 Million tonnes as on 1.04.2014

Singareni collieries company Limited is operating 32 No Underground Mines and 16 No Opencast Mines. These mines are located in 4 districts of Telangana namely Khammam, Adilabad, Karimnagar and Warangal.

Thus, manpower and statutory supervisory staff can be transferred to other operating mines with option of voluntary retirement scheme. Since, mining activity is going to



11.23

be continued in Bellampalli-Dorli Coal belt and in various coal fields of SCCL; re-deployment of manpower is not a problem. Further, there will not be any significant impact to the local residents employed in the mines or to the satellite occupations connected to the mining industry due to continuation of mining activities.

In Bellampalli area the future mining activities will be continued in other blocks such as Khairagura OCP, Dorli OCP-I etc. Hence, there will not be any affect on employment, socio-economic status of the employees as well as dependents on closure of this project.

The remedial measures consequent to closure of the mine are further elaborated below:

1. The employees in the mine will be transferred to the neighboring mines /

upcoming mines in the same area. 2. Since the employment of the workmen is continued in other mines, their

socioeconomic status remains unchanged and the question of paying compensation will not arise.

3. The satellite occupations connected to this mine will also continue their business, even after the closure as the mining activity continues in other mines of the area. Since, the coal produced out of the mine / project will be issued/ transported to the customers, there will be no business with respect to sale of Coal. The water body from the final void will be utilized for Agriculture.

4. The social as well as the economic status of the local employees will remain unchanged due to continuity in their employment. Further some of the local people will get employment in carrying out of the Mine closure activities such as reclamation and plantation etc, and post closure activities.

5. The development of coalfield will provide better social and economic life to the area. It will also give a boost to the industrial activity in the area and help in creating national wealth as below:

• Indirect employment opportunities to local people in contractual works like housing construction, transportation, sanitation, for supply of goods and services to the project and other community services.

• Additional housing demand for rental accommodation will increase. • Market and business establishment facilities will also increase. • Cultural, recreation and aesthetic facilities will also improve. • Improvement in communication, transport, education, community

development and medical facilities. • Overall change in employment and income opportunity.



11.24

11.4. Time Scheduling for Abandonment

After the extraction of total reserves, the mine will be closed. However, the life of the mine may shorten or lengthen according to the rate of production, which is entirely dependent on market demand.

The estimated expenditure for the major closure activities is given in the table below. A Bar chart also enclosed as Annexure-12.

Head Activity Unit Quantity

Rate (Rs. Cr /

Unit) Amount (Rs. Cr)

Progressive closure

Top Soil management M.Cum 1.36 10 13.6 Plantation LS 159.88 0.004 0.64

Dismantling of Infrastructure & Disposal/ rehabilitation of Mining machinery

Dismantling of Facilities Ls 0.25

Dismantling/ Rehabilitation of equipment

Nos 36 0.013 0.45

Safety and security

Barbed wire fencing around the Pit KM 11.16 0.05 0.56

Post Closure management and supervision

Post Mining Air & Water quality management

years 3 0.04 0.12

Manpower Cost and supervision

Men on roll 20 0.06 1.2

Total 16.82 *Note: The total topsoil to be produced from the BPA OC-II Exp Project is 1.80 M.Cum, out of which 0.44 M.Cum of topsoil is already spread over the finished dumps hence estimations are made for the balance topsoil quantity of 1.36 M.Cum. the plantation to be done is 169.18 Ha, out of which plantation is already done over an area of 9.30 ha. Hence the estimations are shown for the balance area of 159.88 Ha.

11.5. Abandonment Cost/Mine closure Cost

11.5.1. Mine closure cost needs to be estimated based on the activities such as barbed wire fencing all around the working area, dismantling of structures/demolishing and cleaning of sites, rehabilitation of mining machinery, plantation, physical/ biological reclamation, landscaping, biological reclamation of left out OB dump, filling up of de-coaled void, post-environment monitoring for three



11.25

years, supervision charges for three years, power cost, protective and rehabilitation measures including their maintenance and monitoring, miscellaneous charges etc.

Bar chart for the closure activities to be taken up for the period life of the mine plus 3 years provided with the break up of the abandonment cost is enclosed as Annexure-12.

11.5.2. Amount To Be Deposited In Escrow Account

Mine closure cost is estimated as per Para: 5.2 of Annexure of the guidelines issued by MoC, for preparation of Mine closure plan.

• Base price for computing mine closure cost is Rs. 6.00 Lakhs per Ha of the total project area for an opencast mine, considering WPI as on August, 2009.

• Now, the base price of Rs. 8.19 Lakhs/Ha of the total project area is taken considering WPI of Apr’2016 (source: RBI website).

• The total Mine closure cost of the Mine Closure Plan is estimated as Rs 15.32 Crores considering the balance life of the mine and total project area.

The following are the details of computation.

WPI as on August'09 129.6

WPI as on base date "April 2016 " 177.00

Escalation rate of Closure cost 1.37

Rate of componding of Annual Closure Cost 5.00%

Amount to be deposited into Escrow Account after compounding @ of 5% "Rs. in Crs" 15.32

UG OC

Base Rate of Closure Cost "Rs. Crs./Ha" 0.06

Closure Cost considered "Rs. Crs/Ha" 0.0819

Lease Area in Ha 169.22

Amount to be depostied into Escrow Account "Rs. in Crs" 15.32

Amount already deposited into Escrow Account "Rs. in Crs" 0 Net Amount to be depostied into Escrow Account "Rs. in Crs" 15.32

Balance Life of the project "in Yrs" 5

Annual Closure Cost in Crores 2.77



11.26

The copy of the Board resolution (minute No.521:5:2, dated: 02.05.2014) approving the mine closure cost considering WPI as on December, 2013 is enclosed as Annexure-13. Further, SCCL Board also authorized C&MD to revise the mine closure cost approved by the Board to the latest WPI if required at the time of deposit of amount in Escrow account.

11.5.3. The following table shows the year-wise mine closure cost of BPA OC-II Expansion Project computed from year 2016-17.

Sl. No. Year Production

(MT)

Annual Mine closure cost

(Rs Crores)

Compounding Interest factor

at 5.00%

Amount to be paid per Annum

(Rs Crores)

Amount to be charged per

annum (Rs/tonne)

1 2016-17 0.76 2.77 1.00 2.77 36.47

2 2017-18 1.00 2.77 1.05 2.91 29.10

3 2018-19 1.00 2.77 1.10 3.06 30.56

4 2019-20 1.00 2.77 1.16 3.21 32.09

5 2020-21 0.84 2.77 1.22 3.37 40.11

Total 4.60 15.32 33.30

11.6. FINANCIAL ASSURANCE

i) SCCL will open an Escrow Account with any Scheduled Bank, with the Coal Controller Organization (on behalf of the Central Government) as exclusive beneficiary. The SCCL will deposit in such Escrow Account at the rate computed as indicated at Para 5.2 & 5.3 in Annexure relating to Guidelines for preparation of Mine Closure plan issued by Ministry of Coal vide letter no.55011-01-2009-CPAM dated 07.01.2013. SCCL will make payments in the Escrow Account as per the above estimated closure cost of Rs 15.32 Cr as indicated in the Mine Closure plan guidelines.

ii) Mining will be carried out in a phased manner initiating afforestation/reclamation work in the mined out area of the first phase while commencing the mining in the second phase i.e. continuation of mining activities from one phase to other indicating the sequence of operations depending on the geo-mining conditions of the mine. Up to 80% of the total deposited amount including interest accrued in the ESCROW account shall be released after every five years in line with the periodic examination of the Closure Plan as per Para 3.1.



11.27

The amount released equal to expenditure incurred on the Progressive mine closure in past five years or 80% whichever is less. The balance amount at the end of the final Mine Closure shall be released to mine owner/leaseholder on compliance of all provisions of Closure Plan duly signed by the lessee to the effect that said closure of mine complied all statutory rules, regulations, orders made by the Central or State Government, statutory organizations, court etc. and duly certified by the Coal Controller.

iii) An agreement, specifying the detailed terms and conditions of operating the Escrow account, will be executed amongst the SCCL, the Coal Controller and the concerned bank in order to effect the above.

11.7. RESPONSIBILITY OF THE MINE OWNERS

It is the responsibility of the SCCL to ensure that the protective measures contained in the mine closure plan including reclamation and rehabilitation works, have been carried out in accordance with the approved mine closure plan.

The owner(SCCL) shall submit to the coal controller a yearly report before 1st july of every year setting forth the extent of protective and rehabilitative works carried out as envisaged in the approved mine closure plans.

Organisation chart for management of Mine Closure activities

Project Officer

Asst. Manager

Mining

Sirdar (1- 1st

shift, 1- 2nd

shift)

Out sourced

manpower for

Closure Activities

Area Env. Officer

Supervisor

Out sourced

manpower for

plantation



11.28

11.8. PROVISION FOR MINE CLOSURE

11.8.1. The SCCL will obtain a mine closure certificate from the Coal controller to the effect that the protective, reclamation and rehabilitation works in accordance with the approved Mine Closure Plan/ Final Mine closure Plan have been carried out for surrendering the reclaimed land to the concerned state Government concerned.

11.8.2. The balance amount at the end of the final Mine Closure shall be released to mine owner on compliance of all provisions of Closure Plan duly signed by the mine owner to the effect that said closure of mine complied with all statutory rules, regulations, orders made by the Central or State Government, statutory organizations, court etc. and duly certified by the Coal Controller. This should also indicate the estimated extractable coal reserves and coal actually mined out.

11.8.3. If the Coal Controller has reasonable grounds for believing that the protective, reclamation and rehabilitation measures as envisaged in the approved mine closure plan in respect of which financial assurance was given has not been or will not be carried out in accordance with mine closure plan, either fully or partially, the Coal controller shall give the mine owner a written notice of his intention to issue the orders for forfeiting the sum assured at least thirty days prior to the date of the order to be issued after giving an opportunity to be heard.

*******



11.29

Flow chart showing proposed wastewater treatment

Sewage from SCCL Township

Sewage Treatment Plant (STP)

Re-use of treated water for plantation within the township

Mine Discharge water including storm water Sedimentation tanks

Use of treated water for

I) Washing of Machinery

II) Dust Suppression

III) Plantation

Surface runoff

channelled

through drains

Settling tank

Excess Water

For ground water re-charging / agricultural purposes and discharge into vagu

Sedimentation tank

Oil & grease Trap

Used for plantation



9.1

Chapter 9

Land Requirement

9.1. Present Ownership and Occupancy of the Area

The BPA OC-II Expansion Project requires a total 191.98 Ha of land, including 137.40 Ha of forest land. The detail of present Land (pre-mining) ownership is given below. Land is given in Ha.

S.No Pre-mining Land use Area (Ha) 01 Forest Land 137.40 02 Non-Forest Land (Tenancy)

(a) Agricultural land 13.57 Non-Forest Land (Govt)

(a) Agricultural land 14.60 (b) Surface water bodies 3.65

Total Non Forest Land 31.82 Total Mine take area 169.22 Land required for R&R 22.76 Total Land 191.98

*Note: As per the earlier approved mining plan the requirement of forest land was 117.63 Ha, but on verification of legal status of the land with forest dep., it was found that the forest land involved is 137.40 Ha. The extent of non forest land is reduced to 54.58 Ha. The total land required for the project (191.98 Ha) is not changed.

9.2. Total Land Requirement and its break-up as per Land Use Pattern

Land use pattern activity wise at completion stage of mining operations is furnished here under:



9.2

The existing project area does not fall under CRZ area. There is No National Park, Wild life sanctuary; eco sensitive area exists within 15 Km radius of the project boundary. This project falls under two forests namely Tandur and Rebbena Reserved forests. Out of 191.98 Ha of land 90.51 Ha of land is required for Quarry for mining and the balance land is used for various purposes as shown above.

Block- B Ext Block- C Block- D Total S.No

Particulars Forest Land


Forest Land


Forest Land


Forest Land


1 Quarry, excavation area. 28.06 - 28.06 18.75 3.06 21.81 40.64 - 40.64 87.45 3.06 90.51 2 Safe barrier, drainage, protection bund

etc 8.83 1.14 9.97 3.45 0.2 3.65 17.66 - 17.66 29.94 1.34 31.28 3 Dump yard including drains around the

dump - 23.81 23.81 - - - - - - - 23.81 23.81 4 Diversion of Nallah - 1.57 1.57 4.31 - 4.31 7.64 - 7.64 11.95 1.57 13.52 5 diversion of public road 0.93 2.04 2.97 2.11 - 2.11 - - - 3.04 2.04 5.08 6 Road between Block-b ext & Block-D 1.92 - 1.92 - - - - - - 1.92 - 1.92 7 CHP, ETP & Service buildings 3.1 - 3.1 - - - - - - 3.1 - 3.10 8 Land for R&R - - - - - - - 22.76 22.76 - 22.76 22.76

Total land requirement 42.84 28.56 71.4 28.62 3.26 31.88 65.94 22.76 88.7 137.4 54.58 191.98



9.3

Post-closure land use:

Sl. No Description

LAND USE DETAILS (Ha.)

Plantation Water body

Public Use

Other Uses Total

1 Excavation Area

(a) Backfilled area (Block C & B Ext.) 49.87 -- -- -- 49.87

(b) Void area left of (Block-D) -- 40.64 -- -- 40.64 2 External waste dump 19.16 --- --- --- 19.16 3 Diversion of Nallah --- 13.52 --- --- 13.52 4 diversion of public road --- --- 5.08 --- 5.08 5 CHP and Service buildings 3.10 --- --- --- 3.10

6

Protective bund around quarry& dump yard, safety distance & drains 37.85 --- --- --- 37.85

TOTAL 109.98 54.16 5.08 169.22

7 Area utilized for rehabilitation and resettlement --- --- 22.76 --- 22.76

Grand Total 109.98 54.16 27.84 191.98

9.3. Details of the land out side the block boundar y

Out of the 191.98 Ha of land required for BPA OC-II expansion Project, 22.7 Ha of land is required for R&R centres. This 22.7 Ha of land falls outside the mine boundary. No other land is required outside the block boundary.

*****

Page 1

Mining Plan (2 nd Revision) & Mine Closure Plan of Bellampalli Openc ast-II (BPA OC- II) Expansion Project

The standing Committee sought certain clarifications vide letter no. 34011/11/2016-CPAM, dated 21-04-2016 on the presentation of the above mentioned project held on 06.04.2016 at Ministry of Coal, Shastri Bhavan, New Delhi. The point wise clarification to all the observations is furnished hereunder in addendum to “Mining Plan (2 nd Revision) & Mine Closure Plan of Bellampalli Openc ast-II (BPA OC- II) Expansion Project” . The clarifications are also incorporated in the relevant pages and the finalized Mine closure plan is submitted for approval.

Ref Para Observations Clarification Remarks

1 Cover Page

The name of the Mining plan should be in line with the name of the mining plan approved vide letter dated 03.07.2006 i.e Bellampalli Opencast –II (BPA OC – II) Expansion Project.

As suggested, the name of the Mining plan is changed in line with the name of the mining plan approved vide letter dated 03.07.2006 i.e Bellampalli Opencast–II (BPA OC – II) Expansion Project.

This is incorporated over the cover page.

2 Cover Page

The Project Area should also be indicated at the Cover page.

As suggested, the Project Area is indicated at the Cover page.

This is incorporated over the cover page.

3 1(n) & D (d)

Current status of Mining lease should be indicated.

Tandur Mining Lease was renewed vide Go.M.S. No.3, dated: 12.01.2015, valid upto 31.12.2034.

Copy of the same is enclosed as Annexure-8.

4 Para 5.3

As indicated in the Para under reference a part of the OB is likely to be dumped in the void of BPA OC – I and BPA OC – II, while the lease area of 191.98 Ha has only been considered in the mining plan is only for BPA OC – II Expansion. The status of Mine Closure plan of the adjacent BPA OC – I and BPA OC – II needs to be furnished.

i) The BPA OC-I and BPA OC-II projects were closed during the year 2003-04 before the formulation of Mine closure guidelines i.e. 2009. Hence no mine closure plans were prepared for these projects. ii) However, 59.20 Ha of area pertaining to BPA OC-I & BPA OC-II is utilised for BPA OC-II Expansion project. iii) Mining plan of Abbapur & Goleti opencast project which is adjacent to the subject mine is under preparation. The area pertaining to BPA OC-I, BPA OC-II and BPA OC-II expansion Project would be utilized for dumping overburden of Abbapur & Goleti opencast project. The mine closure cost for this area will be considered in the above mining plan. iii) Further, an amount of Rs. 4.44 Crores was already spent for spreading of topsoil over BPA OC-I dump and plantation over an area of 9.30 Ha. It is also planned to spread 0.35 M.Cum of topsoil and plantation over an area of 49.9 Ha of land pertaining to BPA OC-II with an estimated cost of Rs.3.70

Page 2


crores. The detailed reclamation of the 59.20 Ha pertaining to BPA OC-I and OC-II is furnished in the Table at Page No.11.12 of chapter-11.

5 Para 11.2.3

The extractable reserve envisaged at Para 11.2.3 should be in line with the extractable reserve given provided at Para 4.5.3

As suggested, the extractable reserves envisaged at Para 11.2.3 are changed in line with the extractable reserve given at para 4.5.3.

This is incorporated at Para 11.2.3.

6 Para I (b) & 11.3.1.1

Pre-mining, during mining, post mining & post closure needs to be envisaged in a tabular form. Post mining management needs to be elaborated.

As suggested, the details of the Pre-mining, during mining, post mining & post closure land use are enclosed at the end of the addendum as Table No:1.

This is incorporated at Para l (b) & 11.3.1.1.

7 11.3.1.2

Action plan for Technical and biological reclamation should be furnished in the following table

As suggested, the action plan for Technical and biological reclamation is enclosed at the end of the addendum as Table No:2.

This is incorporated at 11.3.1.2.

8 J(a) 11.5.2

Reference WPI as on the base date considered for assessment of amount to be deposited in escrow account as a security against the mine activities to be carried out for the closure of the mine should be provided in the following table.

As suggested, the details of estimation of Mine closure cost are furnished at Para. J(a) and 11.5.2. The table detailing the same is enclosed as table No: 3, at the end of the addendum.

9 J (b) & Para 11.4

The Mine closure activities required to be taken should be in coherence with the guidelines of the Mine Closure plan. The basis of assessment of indicative cost should be envisaged.

As suggested, the basis of assessment of indicative cost for calculating Mine closure cost is furnished at Para: J (b) and 11.4. The revised table is enclosed at the end of the addendum as table No: 4.

10 Para 11.5.1

Bar chart for the activities to the taken up for the period life of the mine plus 3 year should be provided with the breakup of the abandonment cost. Further, the figures from Y1 to Y10 in the first row requires elaboration.

Bar chart for the activities to be taken up for the period life of the mine plus 3 years is provided with the break-up of the abandonment cost. Further, the figures from Y1 to Y8 in the first row are elaborated.

The bar chart is enclosed as Annexure: 12. The same is enclosed at the end of the addendum.

11 Embankments have been proposed against diverted routes of three seasonal nallas flowing across the three Blocks. The proposed height of these embankments is 2 metres. It is observed that the Sonapur nala, which flows across the Block-D is located in the foot of a nearby hill. Embankments of at least 3m above HFL against the nallas need to be maintained to protect sudden inrush of surface water

The HFL of the Narsapur nallah i.e. the nearest stream to the Block-C is 983.4. The surface RL along the bund constructed against the diverted Nallah is 979 to 994. Though the bund height is 2m above the surface its height is 3 m above the HFL. Further, it is planned to provide embankments of at least 3m above HFL against the nallas flowing near Block-D and Block-B extension to protect sudden

Page 3


during rainy seasons. inrush of surface water during rainy seasons.

12 Top soil management - Location of top soil dump should be shown on the plan.

The topsoil removed in the first year of the mining operations is 0.43 M.Cum, out of which 0.25 M.Cum of topsoil will be directly spread over the back filled area of the Block-A of BPA OC-II. The remaining quantity of 0.18 M.Cum of topsoil will be temporarily stored over the Block-D area. This temporary topsoil dump is shown in the Plate No: XI (Stage Plan at the end of First year). Further there is no need for storage of the topsoil removed in the later years as the topsoil will be directly spread over the finished dumps. However the account of topsoil management is shown in the table No: 5.15 of chapter No.5.

13 Since the balance life to the project is about 5 years the project proponent should come up with Final Mine Closure plan for the project

Since the subject mining plan life is 5 years, the Mine closure plan submitted is final mine closure plan only.

Annexure (to be attached) 14 Certificate of letter of

authorisation by the Block Allottee Certificate of letter of authorisation by the Block Allottee to the RQP is enclosed as Annexure-3.

15 Certificate of acceptance of the RQP to formulate the mining plan on behalf of the project proponent.

As suggested, Certificate of acceptance of the RQP to formulate the mining plan on behalf of the project proponent is enclosed as Annexure-3A.

16 Certificate from empowered representative of / or Block allottee / applicant that he mine that the reclamation & rehabilitation work shall be carried out in accordance with the approved mine closure plan and any modification /amendments which may be made in the mine Closure Plan by Ministry of Coal, from time to time

As suggested, Certificate from the empowered representative of / or Block allottee / applicant that the reclamation & rehabilitation work shall be carried out in accordance with the approved mine closure plan and any modification /amendments which may be made in the mine Closure Plan by Ministry of Coal, from time to time is enclosed as Annexure-5.

17 Approval of Mine Closure plan from the Board of the company.

The approval of Mine Closure plan from the Board of the company is enclosed as Annexure-13 & 13A.

Plates (to be attached) 18 Pre-Mining Land use plan should

be enclosed showing distinctly As suggested Pre-mining Land use plan is enclosed as plate

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Private land, Govt Land & Forest land.

No: V-A

19 Cadastral plan showing total lease Area and Mine Boundary superimposed over it.

As suggested Cadastral plan showing total lease area is enclosed as plate No: XV.

20 The plan indicates the lease boundary and block boundary. The Mine boundary in distinct colour should also be indicated in the plan

As suggested the plan showing the lease boundary, block Boundary in distinct colour is enclosed as plate No: XVI.

21 None of the plan indicate Access trench for the block, Haul road and roads for transport of OB and Coal, this needs to be provided

The Block-B Extension is only extension of Block-B pit. So the access to Block-B extension is from Block-B only. However, in the stage plans the haul road is shown in the Block-B extension. Further, in the Block-D the access trench as well as haul road is already shown in the stage plans. Since the pits are small, separate haul roads for OB and coal are depicted in the stage plans of 3rd & 4th year only. However in the actual operations separate haul rods for coal and OB will be maintained through out the life of the project.

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Table No: 1. Point No:6: Pre-mining, during mining, post mining & post closure land use pertaining to 169.22 Ha (project area excluding 22.76 Ha of land for R&R)

Pre Mining Land Use "Ha" Land use During Mining

Area (Ha)

Land Use (end of life) Land Use (Post Closure )

Type

Area (Ha)

Type Agricultural Land Plantation Water Body Public /

Company Use Total

Tenancy Agricultural 13.57 Excavation area. 90.51 Excavation area. Excavation area. Nil

Govt Non

Forest

Agricultural 14.60 Back filled area Back filled area 49.87 Back filled area Nil 49.87

49.87

Excavated Void Excavated Void 40.64 Excavated Void Nil 40.64* 40.64*

Safe barrier, drainage, protection bund etc

31.28 Safe barrier, drainage, protection bund etc

31.28 Safe barrier, drainage, protection bund etc

Nil 31.28

31.28

Water Bodies

3.65 Dump yard including drains around the dump



Nil 23.81

23.81

Forest 137.40 Diversion of Nallah 13.52 Diversion of Nallah 13.52 Diversion of Nallah Nil

13.52

13.52

Diversion of public road 5.08

Diversion of public road 5.08 Diversion of public road Nil

5.08 5.08

Road between Block-B ext & Block-D

1.92 Road between Block-B ext & Block-D

1.92 Road between Block-B ext & Block-D

Nil 1.92

1.92

CHP, ETP & Service buildings



Nil 3.10

3.10

Total

169.22

169.22 169.22 Nil** 109.98 54.16 5.08 169.22

Note: *the void area to an extent of 40.64Ha will b e used for dumping of OB from proposed Abbapur & Go leti OCP .

** The area pertaining to BPA OC-II expansion Proje ct would be utilized for dumping of overburden from proposed Abbapur & Goleti opencast project, hence in the present Mining plan & Mine closure Plan no land is envisaged for restoration t o agricultural use.

Table No: 2. Point No: 7. Action plan for Technical and biological reclamation

Cumulative area "Ha" Cumulative Plantation area "Ha" Excavation area

Year Backfilling Void Total Topsoil Dump

Extn. Dump

including Drain Others

Un- disturbed

area Total Backfill Dump Green Area

Infrastructure/ Barren

Agricultural Land Total

Initial 0 21.81 21.81 0 0 10.07 137.34 169.22 0 0 0 0 0 0 Y-1 19.9 11.94 31.84 4.7 0 29.6 103.08 169.22 0 0 0 0 0 0 Y-2 29.97 43.70 73.67 0 23.81 54.9 16.84 169.22 21.81 0 0 0 0 21.81 Y-3 40.52 45.66 86.18 0 23.81 54.9 4.33 169.22 21.81 9.5 0 0 0 31.31 Y-4 49.87 40.64 90.51 0 23.81 54.9 0 169.22 39.48 19.16 0 0 0 58.64 Y-5 49.87 40.64 90.51 0 23.81 54.9 0 169.22 49.87 23.81 0 36.3 0 109.98

The Back fill area percentage is 55.10% and the pla ntation area percentage over mine take area of 169. 22 is 64.99%.

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Table No: 3. Point No; 8. Date considered for asses sment of amount to be deposited in escrow account as a security against t he mine activities to be carried out for the closure of the mine is provided in the following table.

WPI as on August'09 129.6 WPI as on base date "April 2016 " 177.0

Escalation rate of Closure cost 1.37 Rate of compounding of Annual Closure Cost 5.00% Amount to be deposited into Escrow Account after compounding @ of 5% "Rs. in Crs" 15.32

UG OC

Base Rate of Closure Cost "Rs. Crs./Ha" 0.06 Closure Cost considered "Rs. Crs/Ha" 0.0819 Lease Area in Ha 169.22 Amount to be deposited into Escrow Account "Rs. in Crs" 15.32 Amount already deposited into Escrow Account "Rs. in Crs" 0 Net Amount to be deposited into Escrow Account "Rs. in Crs" 15.32 Balance Life of the project "in Yrs" 5 Annual Closure Cost in Crores 2.77

Table No: 4. Point No: 9. The Mine closure activiti es in coherence with the guidelines of the Mine Closure plan along with the basis of assessment of indicative cost .

Head Activity Unit Quantity

Rate (Rs. Cr /

Unit) Amount (Rs. Cr)

Progressive closure

Top Soil management M.Cum 1.36 10 13.6 Plantation LS 159.88 0.004 0.64

Dismantling of Infrastructure & Disposal/ rehabilitation of Mining machinery

Dismantling of Facilities Ls 0.25 Dismantling/ Rehabilitation of equipment

Nos 36 0.013

0.45 Safety and security Barbed wire fencing

around the Pit KM 11.16 0.05

0.56 Post Closure management and supervision

Post Mining Air & Water quality management years 3 0.04 0.12 Manpower Cost and supervision

Men on roll 20 0.06 1.2

Total 16.82

Mining Plan (II Revision) & Mine Closure Plan of BPA ...

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