सीएमपीडीआई cmpdi A Mini Ratna Company

A REPORT ON CONSTRUCTION AND INSTALLATION OF PIEZOMETERS IN , SAHARJURI AND COALFIELDS LIMITED

FOR EASTERN COALFIELDS LIMITED

(A SUBSIDIARY OF COAL LTD.) SANCTORIA ()

FEBRUARY, 2019 Job No-111609

A REPORT ON CONSTRUCTION AND INSTALLATION OF PIEZOMETERS IN RANIGANJ, SAHARJURI AND RAJMAHAL COALFIELDS EASTERN COALFIELDS LIMITED

Prepared by Hydrogeology Section Exploration Division CMPDI (HQ), Ranchi

FOR EASTERN COALFIELDS LIMITED

(A SUBSIDIARY OF LTD.) SANCTORIA (ASANSOL)

February, 2019

PERSONNEL ASSOCIATED

Hydrogeological Documentation

Prabhu Prasad Chief Manager (Geology) Afatab Alam Manager (Geology)

Field Exertion

Afatab Alam Manager (Geology)

Overall Guidance

A. K. Mohanti General Manager (Expl.) Prabhu Prasad Chief Manager (Geology)

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI CONTENT

Chapters Page No.

1.0 Introduction 1 2.0 Location 2 3.0 Topography 3 4.0 Drainage 4 5.0 Geology of the Area 6-8 6.0 Construction and Installation of piezometers 9-26 6.1 Construction of piezometers 9-17 6.1.1 Construction of piezometers in Raniganj CF 11 6.1.2 Construction of piezometers in Saharjuri CF 12 6.1.3 Construction of piezometers in Rajmahal CF 13 6.2 Development of piezometers 17 6.3 Piezometer Testing 19 6.3.1 Piezometer Testing in Raniganj CF 20 6.3.2 Piezometer Testing in Saharjuri CF 21 6.3.3 Piezometer Testing in Rajmahal CF 21 7.0 Water Sample collection and quality analysis 27

LIST OF TABLES

Table No Description Page No.

Table No – 1 Stratigraphic Succession 6 Table No – 2 Cluster-wise details of piezometer 15 Table No – 3 Aquifer parameter determined from piezometer 23 Table No – 4 Final location of AWLR 26

______JOB NO - 111609

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

ANNEXURES

Annexure-IA Graphical analysis of Recovery test Annexure-IB Graphical analysis of Slug Injection test Annexure-II Water Quality report Annexure-III letter regarding award of Job Number. Annexure-IV Approval of EDs Annexure-V Request letter from ECL

LIST OF PLATES

PLATE-1 Location Plan PLATE-2 Location of piezometers in PLATE-3 Location of piezometers in Chitra OCP Area PLATE-4 Location of piezometers in Rajmahal OC Area PLATE-5 Location of piezometers in Simlong OCP Area PLATE-6 to 30 Design and location of piezometers in Raniganj CF PLATE-31 to 32 Design and location of piezometers in Saharjuri CF PLATE-33 to 35 Design and location of piezometers in Rajmahal CF

______JOB NO - 111609 CMPDI ______DETAILS OF THE REPORT

1 Name of the Project Construction and Installation of Piezometer in Raniganj, Saharjuri and Rajmahal Coalfields, Eastern Coalfield Limited 2 Purpose of Piezometer Monitoring of water level and quality in semi- confined/leaky/deeper aquifers for assessment of impact of activity on groundwater regime. Water level and quality of Shallow/Unconfined/phreatic aquifer will be monitored using existing dug-wells. 3 State Covered and 4 Coalfields covered Raniganj, Saharjuri, . 5 Topography 1) Raniganj CF: Gently undulating terrain with highest elevation in the north-central area and sloping towards south and south- east i.e. towards and towards north and northeast i.e. towards is observed. 2) Saharjuri CF: The area is marked by more or less flat and gently undulating topography. The ground elevation of the area ranges from 180 to 205 m above mean sea level and the general slope of topography is towards west and southwest i.e. towards Ajoy River. 3) Rajamahal CF: In general, coal bearing Formations have been found to occur in the lower reaches whereas Rajmahal Traps occupy the higher riches (Rangamatia Hill) of the topography. The low-lying Gondwana areas are generally cultivated and are devoid of forest. 6 Annual Rainfall Average annual rainfall- 1490 mm at Asansol (Raniganj CF), West Bengal 1135 mm at Chitra project (Saharjuri CF), Jharkhand 1172 mm at Rajmahal OC (Rajmahal CF), Jharkhand 1678 mm at Simlong OC (Rajmahal CF), Jharkhand 7 Master drainage Damodar and Ajay River (Raniganj CF), Ganga River (Rajamahl CF), Ajay River (Saharjuri CF) 8 Geological Formation Raniganj and Barakar Formation 9 Aquifer system a. Top unconfined/ phreatic aquifer above the top most coal seam b. Deeper/Semi-confined / leaky confined aquifer below the topmost coal seam. 10 Nature of activity Mining of coal by opencast and underground method. 11 Number of Total 30 nos. of piezometers have been constructed in ECL Piezometers command areas. 1) 25 nos. in Raniganj Coalfield, 2) 3 nos. in

Job No. 111609

CMPDI ______constructed Rajmahal Coalfields, 3) 2 nos. of piezometer in Saharjuri Coalfield. 12 Depth of Piezometers 35 m to 148 m 13 Water Level in 1) Raniganj Coalfield: 4.40 m ( Piezometer, Piezometer (m) Pandaveshwar Area) to 115 m (Bejdih Piezometer, Area) 2) Saharjuri Coalfield: 9.89 m to 17.30 m 3) Rajmahal Coalfield: 9.37 m (Old Worksop, Rajmahal OC) to 22.03 m (Lohandiya Panchayat Bhawan, Rajmahal OC) 14 Discharge of 1) Raniganj Coalfield: 0.10 to 4.54 lps Piezometers (lps) 2) Saharjuri Coalfield: 0.41 to 1.42 lps 3) Rajmahal Coalfield: 0.41 to 1.10 lps 15 Aquifer Parameters 1) Raniganj Coalfield: 0.778 to 0.0030 m/day (Permeability) 2) Saharjuri Coalfield: 0.0157 to 0.050 m/day 3) Rajmahal Coalfield: 0.131 to 0.105 m/day 16 Aquifer Parameters 1) Raniganj Coalfield: 0.0689 to 36.60 m2/day 2 (Transmissivity) 2) Saharjuri Coalfield: 4.81 m /day 3) Rajmahal Coalfield: 5.23 m2/day

Job No. 111609

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

1.0 INTRODUCTION

Regular monitoring of groundwater level and water quality are required to be carried out by construction of new piezometers (observation wells) as a part of compliances of environmental clearance of 12 Clusters of mines (Cluster-1 mines to Cluster-12 mines) and standalone project like Mohanpur OC, Kalidaspur UG, Rajmahal OC, Simlong OC and Chitra OC, of Eastern Coalfields Limited granted by MoEF & CC, Govt. of India. As requested by GM (Envt.), ECL vide his letter no. ECL/ENV/NS/18/23, dated 01.02.2018, Hydrogeology Section of Exploration Division of CMPDI HQ has taken up the job to supervise the construction of piezometer followed by pumping test in ECL command Area (Raniganj, Saharjuri & Rajmahal Coalfield).

A report entitled ‘Location and Design of Piezometers’ for 12 cluster of mines and 5 standalone projects was submitted to ECL in 2017 for further drilling and construction of piezometer in proposed locations. It was requested by ECL for technical guidance and supervision for construction in association with Hydrogeologist of CMPDI vide letter No ECL/ENV/NS/18/23, Dated-01.02.2018. Afterward Hydrogeologist from CMPDI (HQ), Ranchi has attended the assigned job of supervision of construction of piezometer followed by pumping test. For the purpose of drilling and installation of piezometers, ECL outsourced the job to Kolkata based water wells drilling company M/S ‘Shiv Driller’. The construction of piezometer has been done as per the location and design of piezometer provided by Hydrogeology Department, CMPDI, Ranchi.

The purpose of the construction of piezometers is to monitor the groundwater in confined/semi-confined aquifers in respect to the impact of coal mining or any other activity on groundwater regime, if any. Proposal for suitable location and design of piezometers have been done to monitor both groundwater level and quality of targeted aquifer/aquifers.

Job No. 111609 1

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Monitoring of groundwater levels of top unconfined/phreatic aquifer, using already established network of dug-well/open wells within the coalfield, is to be continued. The present established network of these dug wells are showing condition of the top phreatic aquifer, which is more potential than the below semi- confined/leaky aquifer.

A network of piezometers tapping deeper/semi-confined aquifer (below phreatic aquifer) are necessary to evaluate the impact in the vicinity of active coal mining areas. A piezometer is a purpose-built, non-pumping observation bore well that facilitates measurement of vertically averaged piezometric head of an aquifer. A piezometer taps only the targeted aquifer blinds the rest of drilled strata and finally isolates the aquifer from the rest of the drilled strata and ground by properly placed seals. Piezometers are also used for sampling groundwater from the tapped aquifer for water quality monitoring.

2.0 LOCATION

All the clusters of mines (Cluster-1 to Cluster-12) and standalone Mohanpur OCP and Kalidaspur UG, Eastern Coalfields Limited are located in the Raniganj Coalfield in Barddhaman District of West Bengal and partly in District of Jharkhand. All these mines are located near Asansol town. It lies in the Survey of India Toposheet no. 73 M/1, M/2, M/6, I/9, I/10, I/13 & I/14 and is defined by latitude 23O 34' and 23O 49' North and longitude 86O 03' and 87O 24' 0" East.

The Rajmahal OC block is located at a distance of 32 km north of town. It lies in the Survey of India Toposheet no. 72 Q/8 and is defined by latitude 25o 01' 12" and 25o 03' 15" North and longitude 87o 21' 0" and 87o 24' 0" East.

Simlong OCP block of Rajmahal Area, Eastern Coalfields Limited is located at a distance of 30 km east from Godda town and Sundarpahari is at a distance of 10 km to the west from the block. It lies between latitude 24o 44' 33" and 24o 45' 55" North and longitude 87o 26' 30" and 87o 28' 38" East. This block is covered by Survey of India toposheet no. 72 P/5 and P/6 in R.F. 1: 50,000.

Job No. 111609 2

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

Chitra (Expansion) OCP block of S.P. Mine Area of Eastern Coalfields Limited is located in the Saharjuri Coalfield in Deoghar district of Jharkhand. The block is located at a distance of 65 km (by road) from Deoghar. It has leasehold area of 14.45 sq. km. and lies between latitude 24o 05’ and 24o 10’ North and longitude 86o 49’ 30” and 86o 57’ 30” East. This block is covered by Survey of India toposheet no. 72 L/16. in R.F. 1: 50,000. Location map of the area is enclosed as Plate No-1.

3.0 TOPOGRAPHY

Raniganj Coalfield: Gently undulating terrain with highest elevation in the north-central area and sloping towards south and south-east i.e. towards Damodar River and towards north and northeast i.e. towards Ajay River is observed.

All the 12 nos. of cluster of mines and standalone Mohanpur and Kalidaspur UG falls in Raniganj Coalfield. The maximum RL of the projects is 160 m above the mean sea level whereas the minimum RL is 60 m above mean sea level.

Rajmahal Coalfield: The area is characterized by undulating topography with general slope towards southeast. Rangamatia hill (trending north-south) lying in the northern part of the Rajmahal block represents the highest land mark of 204 m above mean sea level. Elevation of the entire Rajmahal block area varies from 100 m to 150 m above mean sea level.

The Simlong OCP block area is characterized by undulating topography. There is a NW-SE trending ridge occupying the central part of Simlong OCP block. Besides, a gradual increase in elevation is noticed in the eastern and north-eastern part of the block. The maximum ground level 172.86 m and minimum elevation is 99.55 m above MSL. The general slope of the block is from Southeast to the Northwest.

Job No. 111609 3

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Saharjuri Coalfield: The area is marked by more or less flat and gently undulating topography. The ground elevation of the area ranges from 180 to 205 m above mean sea level and the general slope of topography is towards west and southwest i.e. towards Ajoy River. In general Talchir formation forms the lower ground while the coal measures including sandstones form the relatively higher ground. However, the original topography is now being disturbed at places in the core zone by opencast mining and OB (overburden) dumps.

4.0 DRAINAGE

Raniganj Coalfield: The drainage in the entire Raniganj Coalfields and the adjoining areas is controlled by Ajoy River running along the northern boundary of the coalfields and Damodar River running along almost southern boundary of the coalfields.

The Khudiya nadi flowing from NW to SE passes in the northwestern part of Raniganj Coalfield and joins along with Jhilia Nala. The Barakar River flowing from north to south and joins the Damodar River, Master Drainage of the area. Two major dams are located in the buffer zone. Of which Dam on Barakar River is located in the north of the coalfield whereas the dam on Damodar River is in the south in the state of Jharkhand.

A number of major nalas namely Nonia Nala (4th order) and Garui Nala (3rd order) drain the western part of Raniganj coalfields (West Bengal) and flowing north to south & joins Damodar River. There is one prominent 3rd order called Machkanda Jore is flowing south to north and joins Damodar River (Cluster-5 area).

In the central part of Raniganj coalfields, Punta Khal/Jore flowing from northeast to southwest and joins Nunia River. Sripur Jore flowing from east to west (through ) is tributary of Punta Khal/Jore. Garui Jore flowing from west to east and join Nunia River at south-western boundary of the Cluster-8. Nunia River flowing from north-west to south-east and join Damodar River. Singaran

Job No. 111609 4

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Nala, flowing from west to east and joins Damodar River. Gaighata jore and Bangarpui jore join Damdar River.

In the eastern part of Raniganj coalfield, two major nalas (4th order), Singaran nala and Tumni nala, are originating in the northern part of Raniganj coalfield. Singaran nala is originating from the northwest of Cluster-10 joins Damodar River (the master drainage of the area). Whereas, Tumni nala flowing west to east and join Ajoy River (another major river of the area). Kumarkhela Jore, Banbahal Jore, Sukha Jore, are tributary of Itakhala Jore flowing from west to east then joins Tumni Nala. Kunur Nala and Tamla Nala is flowing from northwest to southeast and joined Damodar River The Raniganj coaifields is also drained by a numerous ephemeral streams. There are a number of ponds and tanks in the area.

Rajmahal Coalfield: The River Ganga is the master drainage flowing about 35 km north of the block. Dhulia Nala, an ephemeral stream, flows 1 km away from the northeastern boundary of Rajmahal OCP in the dip side and forms the main drainage channel of the project area. Dhulia Nala ultimately joins River Ganga. By and large the local drainage is poor and sparsely developed. Most of the drainage is of 1st order. Most of the drainage channel is disappeared due to intensive agricultural activities. The Rangamatia hill, trending north to south, acts as a water divide in the study area dividing the drainage into an eastern and western subdomain.

The drainage of the block is mainly controlled by the Gumani River which flows at the western boundary of the block. Damro Nala (Lada Nala) meanders along the south-western boundary of the block and finally joins the Gumani River near Simlong village. Gumani River is the Master drainage of the study area.

Saharjuri Coalfields: The drainage in the entire Saharjuri Coalfields and the adjoining areas is controlled by the Ajoy River. Ajoy River flows from north-west to south-east and the run-off from within the coalfields and also adjoining areas during monsoon, drains into this river through seasonal nalas flowing in southerly and south-westerly direction. The drainage pattern of the area is dendritic in nature.

Job No. 111609 5

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI There are a number of ponds and tanks in the area. Ajoy River is the master drainage of the area with a total catchment area of approximately 6000 sq km. The Chitra Expansion OCP mining area is drained by three seasonal nalas (2nd order) flowing towards south & southwest and acts as path-ways to the surface run-off from the coalfield into Ajoy river nearly 4 km west of the project area. All these nalas have general slopes towards south and southwest.

5.0 GEOLOGY OF THE AREA

Raniganj coalfield: It represents the easternmost coal basin in the Damodar Valley Basin Belt. It is almost elliptical in shape and covers an area of about 1600 sq. km. The coalfield is bounded by the latitude 23o 30’ and 23o 52’ North and longitude 86o 25’ and 87o 37’ East and falls in Barddhaman, Birbhum, Bankura and Purulia Districts of West Bengal and partly in of Jharkhand. The general stratigraphic sequence of formations of Raniganj Coalfield as has been worked out by GSI and are given in Table-1.

Table No: 1 Stratigraphic Sequence of Raniganj Coalfields (after GSI)

Age Formation Maximum Description of Strata Thickness (m) Recent, Alluvium & sandy soil, laterite, Sub- Recent lateritic gravel, clays and sand to Quaternary ------Unconformity------Jurassic Igneous Dolerite dykes, mica-peridotite and intrusive Lamprophyre dykes and sills Upper Supra- 305 Coarse grained red, yellow and Triassic Panchet grey sandstones and quartzitic conglomerates with bands of dark grey shale ------Unconformity------Lower Panchet 610 Coarse grained yellow & grey, soft, Triassic micaceous falsebedded sandstones with thick red clays, khaki green shales and sandstones at the base

Job No. 111609 6

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Age Formation Maximum Description of Strata Thickness (m) Upper Raniganj 1035 Fine to medium grained grey & Permian greenish sandstone, variety of siltstone, shales and coal seams Middle Barren 365 Carbonaceous shale with Permian Measures occasional bands of sandy, micaceous shales and numerous of clay ironstone. Lower Barakar 640 Coarse grained white & grey Permian arkosic to sub-arkosic sandstones, conglomerates, shale and coal seams Upper Talcher 275 Coarse-grained sandstone, white Carboniferous or slightly variegated, green shales and fine grained sandstone with undecomposed feldsper and a boulder bed at the base. ------Unconformity------Archean Archaean Granites, gneisses and schists

Rajmahal Coalfield: Rajhmahal Coalfields is a group of detached coalfields, i.e. Brahmani being the southern-most, followed by Mahuagarhi, Pachwara, Chuperbhita and Hura (including Pirpainti Barahat) in the north. Although the blocks are isolated, but appear to be geological continuity. Vast areas of Gondwana sediments underlie Rajmahal Traps/Gangetic alluvium. The entire Hura basin is about 80 sq. km. Rajmahal OCP block is located in the northern part of the Hura basin. The Barakar Formation which overlies the metamorphic basement and the Talchir (wherever the Talchirs have developed) are represented by fine to very coarse grained sandstone, shale, siltstone, coal and fire clay.The Rajmahal OCP block is under a cover of alluvium/soil, sandy soil, clay etc and weathered mantle. The soil is generally clayey. Thickness of weathered mantle varies from 13.00 m to 30.00 m.

The entire Chuperbhita basin is about 60 sq. km. Simlong OCP block is located in the south-western part of the Chuperbhita basin. Lower coal bearing units of the Barakar Formation have been found to occur in Simlong OCP area and are represented by medium grained to pebbly sandstone, shale and coal seams.

Job No. 111609 7

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Saharjuri Coalfield: Chitra Expansion OCP block is located in the Saharjuri coalfield covering the area of 30 sq. km lying north of the Damodar Valley coalfields. Within Saharjuri coalfields the coal bearing rocks are represented by the Karharbari formation below and Barakar formation above. The underlying Talchir formation rests on Metamorphics which forms the basement for overlying Lower Gondwana sediments.

Job No. 111609 8

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI 6.0 CONSTRUCTION AND INSTALLATION OF PIEZOMETERS

6.1 Construction of Piezometers

Total 35 nos of piezometers was proposed for construction in ECL leasehold area. Out of 35 nos of proposed piezometers, only 30 nos. of piezometers had been constructed. Remaining 5 nos. were not feasible due to following reasons:

SI. Piezometers Location Name of Mines Cluster Depth Remarks No. 1 5/SO/PP-02 Near Perbelia Coal Perbeliya Cluster-5 72 Found Dry up Colliery, Depot No-1 to final depth 2 7/SL/BP-01 Chakballavpur Unit, Barmondia Cluster-7 67 Closed Mine Colliery, near BC Incline Area 3 8/SR/GP-03 Pit-2 & Pit-3 Girmint UG, Cluster-8 69 Closed Mine Sripur Area 4 11/BN/SP-01 In campus of Shankarpur UG, Cluster-11 72 Not feasible Bankola Area Office due to working below 5 11/KD/JP-03 50 m west of Pit-8 of C.L.Jambad UG, Cluster-11 59 Found Dry up Area CL Jambad mine to final depth

The depth of piezometer varies from 35 m to 148 m below ground level. The piezometer tapping the shallow aquifer have less depth. Piezometer RPZ-01 situated in Rajmahal Area have 35 m of depth. Piezometer CPZ-01 situated in Chitra Colliery (S.P. Mine Area) is the deepest piezometer (148 m) constructed in ECL leasehold area.

Construction of piezometers in ECL command area was started with drilling of Bore-well in Area on 11.04.2018. The piezometer were constructed by drilling of 10 inch dia of bore hole through DTH (Down the Hole) rig. After drilling of bore hole, casing/ pipe of 4 inch dia were inserted. These casings/pipes are of medium duty GI pipe. Two types of casings/pipes were used viz. blank and perforated casing. All pipe joints were flush threaded. The slotted / perforated casings/pipes used have vertical lined slots to give an area of opening for the water

Job No. 111609 9

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI to percolate inside the piezometer. Proper central guided were fixed with bail plug at the bottom of the piezometer. Central guides were fixed for maintaining proper alignment and verticality of the piezometers. While lowering the well assembly, each casing ring was welded with each other.

Proper placing of pi size gravel along the slotted pipe were done after drilling and casing of borehole. The main purpose of gravel pack is to enable water- bearing formation to yield sand free water to its maximum capacity. The gravel in the pack consist of clean, hard, well rounded uniform particles of silica or quartz free from dirt, foreign material as well as flaky particles. Sealing at the top of gravel pack with clay and cement were done in the annual space between well assembly and borehole to isolate the targeted aquifer from the rest.

Piezometers were constructed with casing extended sufficiently above ground level to avoid submergence in the event of flooding. A sanitary cover/ seal of cement concrete was used around the piezometer and was graded to drain away from the well to protect the well from direct surface water percolation. All piezometers were subsequently capped and locking arrangements were made to ensure safety.

Fig-1: Piezometer constructed at Madhaipur and Sodepur colliery

Job No. 111609 10

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI 6.1.1 Construction of piezometer in Raniganj Coalfield

Construction of piezometers in Raniganj Coalfield was started with drilling of Bore-well in Jhanjra Area on 11.04.2018. The depth of piezometers in Raniganj Coalfield varies from 35 m to 145 m. Total 25 nos of piezometers covering all clusters of mines and standalone projects have been constructed in this area. Raniganj and Barakar Formations are two main coal bearing formation found in the Raniganj Coalfield. In the Cluster-1, 2, 3, 4 and Mohanpur OCP mining area, coal seams are occurred in the Barakar Formation whereas coal seams, being mined in Cluster-5 to 12 mining area, belong to Raniganj Formation. The depth of the piezometers were decided on the basis of depth of working of the nearby mines. Construction of the piezometer were done as per the design and locations provided by CMPDI (HQ). The piezometer locations have been marked on Plate No-2. The design and locations of the each piezometers have been given in Plate No-6 (A&B) to 30 (A&B).

The permeable formations i.e. sand and sandstone within Gondwana formations behave as aquifer. The coal seams and shale developed act as impermeable beds i.e. aquiclude. The slotted casing/pipes were placed along the permeable beds only to ease the flow of water into well. Blank pipes were placed along impermeable beds. The top portion of the targeted aquifer has been sealed by cement sealing to prevent the surface water into well.

Job No. 111609 11

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

Fig-2: Drilling at Sonepur Bazari Area Fig-3: Drilling at Jhanjra Area, Raniganj Raniganj Coalfield Coalfield

6.1.2 Construction of piezometer in Saharjuri Coalfield

Chitra (Expansion) OCP block of S.P. Mine Area is standalone project of Eastern Coalfields Limited and is located in the Saharjuri Coalfield in Deoghar district of Jharkhand. Working coal seams in area occurs in Barakar formation. Total 2 nos of piezometers were constructed in the leasehold area of Chitra OCP. The piezometer CPZ-01 is the deepest piezometers constructed in the ECL leasehold area. CPZ-01 situated in down dip direction near the magazines and to be used to monitoring the impact on aquifers sandwiched between Local seam and Damagora Bottom, between Damagora and Tulsidabar seams and between Tulsidabar and Bhawanipur seams.

Piezometer CPZ-02 was constructed near the old ECL colony in the leasehold area of Chitra Project. It is the shallow piezometers monitoring the impact on aquifer sandwiched between Saharjuri Top and Saharjuri Bottom seam and just below Saharjuri Bottom Seam. The piezometer locations have been marked on Plate No-3. The design and locations of the each piezometers have been given in Plate No-31 (A&B) and 32 (A&B).

Job No. 111609 12

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI 6.1.3 Construction of piezometer in Rajmahal Coalfield

Total 3 nos of piezometers were constructed in the leasehold area of Rajmahal OCP and Simlong OCP. 2 Nos in Rajmahal and 1 no in Simlong OC were constructed. Piezometer RPZ-01 was constructed near the old workshop in the leasehold area of Rajmahal OC. It is the shallow piezometer monitoring the impact on aquifer sandwiched between Seam-I and Seam-II Bottom. Piezometer RPZ-02 was constructed near the Lohandiya Panchayat Bhawan in the leasehold area of Rajmahal OC. It is the deep piezometer made for monitoring the water level and water quality of the aquifer in the down-dip direction. The piezometer locations in Rajmahal area have been marked on Plate No-4. The design and locations of the each piezometers have been given in Plate No-33 (A&B) and 34 (A&B).

Simlong OCP Block occupies the south-western part of Chuperbhita basin/coalfields. Lower coal bearing units of the Barakar Formation have been found to occur in Simlong OCP area and are represented by medium grained to pebbly sandstone, shale and coal seams. The piezometer SPZ-1 was constructed to monitor the aquifer sandwiched between local seam and seam-I. The design and locations of the piezometers have been given in Plate No-35 (A&B).

Job No. 111609 13

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

Fig-4: Drilling and construction of piezometers in Rajmahal Area, Jharkhand

Fig-5: Drilling and construction of piezometers in Simlong OCP Area, Jharkhand.

Job No. 111609 14

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Table No-2: Cluster-wise details of piezometer constructed in ECL command area Piezom Location of Name of Name of Depth Length & Aquifers Groundwa eter Piezometer Mines Cluster (m) Type of Tapped by ter to be casing Piezometer monitored in & around *1/MG/CP Chapapur Incline Chapapur UG, Cluster-1 60 Blank: 42.50 m Aquifer tapped Kusumkanali Area villages -01 Slotted: 18.0 m between Matadih and Badjna seam 1/MG/HP- Hariajam Hariajam Colliery, Cluster-1 90 Blank: 78.50 m Aquifer tapped Lower Kuhuka 02 Colliery Pumping Slotted: 12.0 m between Khudia and Village House Gopinathpur seam 2/MG/KP- In campus of Kumardhubi Cluster-2 110 Blank: 80.50 m Aquifer tapped Sonardanga Colliery, Mugma 01 Barmuri OCP Slotted: 30.0 m between Singpur and Area Office Top and Village Brindabanpur Bot. seam 2/MG/RP- South-west Rajpura OC, Cluster-2 46 Blank- 28.50 m Aquifer tapped Egarkur Mugma Area 02 corner of water Slotted: 18.0 m between Village logged West- Brindabanpur and

Barakar Quarry Kalimati seam

KM Seam 3/SL/BP- Bonjhemehari Bonjhemehari Cluster-3 114 Blank- 90.50 m Aquifer tapped Dendua Basti OCP, Salanpur 01 Colliery Slotted: 24.0 m between Salanpur-C Area Dispensari, near /L-6 (Local -6) and Railway siding Salanpur- B seam 3/SL/DP- North of Dabor Colliery, Cluster-3 70 Blank- 55.50 m Aquifer tapped Dangal Para 02 Hindustan Slotted: 15.0 m between Salanpur-C Basti Alkusa Colliery and L-2 (Local-2) seam/ Salanpur-D *4/SL/GP- OC Weight- Gaurangdih OC, Cluster-4 90 Blank- 60.50 m Aquifer tapped Kantapahari Salanpur Area 01 bridge Slotted: 30.0 m between B-V and B-II Village seam. 5/SO/PP- Bhamaria Unit Perbeliya Colliery Cluster-5 110 Blank- 98.50 m Aquifer tapped Bhamaria (Bhamaria Unit), 01 Campus, near Slotted: 12.0 m between R-IX and R- Village Sodepur Area Incline No.-4 VIII seam 6/SO/BP- Ranishayar Bejdih UG, Cluster-6 145 Blank- 112.50 Aquifer tapped Ranishayar Sodepur Area 02 Colony m between R-VII and Basti Slotted: 33.0 m R-VI seam *6/SO/SP- In campus of Sodepur Colliery, Cluster-6 100 Blank- 79.50 m Aquifer tapped Chinakuri Sodepur Area 03 9/10 Pit Office Slotted: 21.0 m between R-VA and Village R-IV seam 7/SR/BP- Manager’s office West Bhanora UG, Cluster-7 59 Blank: 44.50 m Aquifer between R- Madanmohan Sripura Area 02 campus Slotted: 15.00m IV and R-V seams pur and Bhanora villages 8/SR/NP- Ningha Colliery Ningha UG, Sripur Cluster-8 130 Blank: 112.50 Aquifer between R- Bhakhapara(N Area 04 Office Campus m IV and R-V seams ingha), Slotted: 18.00m Shivdanga

Job No. 111609 15

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Piezom Location of Name of Name of Depth Length & Aquifers Groundwa eter Piezometer Mines Cluster (m) Type of Tapped by ter to be casing Piezometer monitored in & around and Chanda villages 9/KN/AP- Near Agent’s Amritnagar UG, Cluster-9 124 Blank: 88.50 m Aquifer between Kankardanga Kanustoria Area 01 Office, Opp. Slotted: 36.00m Nega (R-VIII) and and Kalimandir Bogra (R-VI) seams Amritnagar villages 9/ST/RP- Campus of UG, Cluster-9 132 Blank: 87.50 m Aquifer between R- Kashinathpur, 03 Mining Training Slotted: 45.00m VI and R-VIII seams Ratibati & Institute, Ratibati Chalbalpur villages 10/KJ/KP- ECL quarter, Central UG, Cluster-10 94 Blank: 76.50 m Aquifer between R- Bhadur and 01 Parama B Ed Slotted: 18.00m VIII and R-IX seams Lachipur College Villages 10/KJ/MP- Manager’s Madhabpur UG, Cluster-10 35 Blank: 20.50 m Aquifer between R- Harispur and Kajora Area 03 office, Slotted: 15.00m VIII and R-IX seams Madhabpur villages colliery 10/KN/PP- Dispensary, Parasea UG, Cluster-10 90 Blank: 63.50 m Aquifer between Parasea, Kanustoria Area 06 Parasea colliery Slotted: 27.00m Singaran and Jambad and Banbahal (R-VII) Dhandadihi seams villages 11/KD/KP- Near Associate UG Cluster-11 65 Blank-50.50 m Aquifer between V & Kenda village mine, 04 Power Slotted: 15.00 VI Corporation m Complex 12/JH/JP- Campus of Jhanjra UG, Cluster-12 105 Blank: 63.50 m Aquifer between R- Nabaghanapu 01 Jhanjra Area Jhanjra Area Slotted: 42.00 VI and R-VII seams r and Office m villages 12/SB/SP- Near Magazine, Sonepur Bazari Cluster-12 104 Blank: 68.50 m Aquifer between R-II Bazari and OCP, 03 Haripur Colliery Slotted: 36.00m and R-IV seams Haripur SB Area villages 12/PD/MP Canteen near Madhaipur UG, Cluster-12 50 Blank: 35.50 m Aquifer between R- Madhaipur, -08 Pit-9 Slotted: 15.00m II/III and R-IV seams Laskarbandh & Chandardang a villages 12/PD/PP- Manager’s Office Pandaveswar UG, Cluster-12 53 Blank: 35.50 m Aquifer between R- Pandaveswar, Pandaveswar Area 10 Campus Slotted: 18.00m II/III and R-IV seams Ramnagar & Baidyanathpur villages 12/BN/TP- In campus of Tilaboni UG, Cluster-12 55 Blank- 37.50 m Aquifer tapped Shyamsundar Bankola Area 11 Bankola Area Slotted: 18.0 m between R-VIII B and pur Village. Hospital R-VII seam *SL/MP- Mohanpur OCP, Mohanpur OCP, Mohanpur 80 Blank- 62.50 m Aquifer tapped Amdiha Salanpur Area 01 close to Shive OCP Slotted: 18.0 m between Salanpur-B Village

Job No. 111609 16

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Piezom Location of Name of Name of Depth Length & Aquifers Groundwa eter Piezometer Mines Cluster (m) Type of Tapped by ter to be casing Piezometer monitored in & around Mandir, near (Standalone and Salanpur-C workshop Project) seam KPZ-01 Near Kalidaspur Kalidaspur UG Standalone 75 Blank-51.50 m Aquifer tapped Kalidaspur Airshaft (Satgram Area) project Slotted: 24.0 m between Local-2 and Village Seam-VIII. CPZ-01 Near Magazine Chitra Project, Standalone 148 Blank-115.50 m Aquifer tapped Tulsidabor S.P. Mine Area project Slotted: 33.0 m between Local and village Damagoria and Bhabanipur #CPZ-02 Old ECL Colony Chitra Project, Standalone 35 Blank-26.50 m Aquifer tapped Bhawanipur S.P. Mine Area project Slotted: 9.0 m between Saharjuri village Bottom and Saharjuri Top RPZ-01 Old workshop Rajmahal OC, Standalone 35 Blank-23.50 m Aquifer tapped Chhota Simra (Dozer Section) Rajmahal Area project Slotted: 12.0 m between Seam-I and village Seam-II bottom RPZ-02 Near Lohandia Rajmahal OC Standalone 87 Blank-69.50 m Aquifer tapped Lohandiya and Panchayat project Slotted: 18.0 m between Seam-II Bharenda Bhawan bottom and Seam-III. villages *SPZ-01 Simlong OC Simlong OC Standalone 54 Blank-42.50 m Aquifer tapped Simlong project Slotted: 12.0 m between Seam-L2 Village bottom and Sam-I bottom. *Change in location and design of piezometers. # Proposed new Piezometer at Chitra OC (Previous proposed location was cancelled due to ground problems).

6.2 Development of Piezometers

After construction, piezometers were developed by continuous flushing out of water for 5 to 6 hours using compressed air at 70 to 150 PSI. Development of piezometers was done through surging method in which groundwater was moved forcefully out of the well screen using compressed air. Development of piezometer is being done to extract maximum practical quantity of sand, drilling and unwanted fine materials in order to bring the well to maximum yield per meter drawdown and to sand free condition. By doing so better permeable layers of the aquifer are created around the well screen or slotted pipes. Which ensures greater efficiency and long life to the piezometers.

Job No. 111609 17

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Surging Airline pipe of size 2.5 inch (outer dia) were lowered up to five meter above from the final depth of each piezometer and clamped tightly and placed at the top of the piezometer. Groundwater was flushed out of the piezometers for a maximum period of 5 to 6 hours. Air pressure was constantly maintained at a 70 to 150 PSI. Mud cake / clay particles introduced during the drilling of water well needs to be removed from the slotted area of the pipe to increase the rate of water movement from the aquifer to the well. It is also required to stabilize the aquifer to prevent the sand pumping, thereby producing better quality of water and increase the life of water well. Development should continue until the discharge water is clear and all fine material from the well and adjacent aquifer have been removed. The time required for development depends on the nature of the water bearing layer, the thickness of screen slots relative to aquifer particle size.

Prior to flushing, static water level at each piezometer was recorded. Flushed out water was properly drained to pass through a 90o V-notch. Readings of outflow of the water was monitored at every 15 minutes interval using the V- notch plate. Development of all piezometers in ECL command area was done through air compressor.

Fig-6: Development of piezometer at Fig-7: Development of piezometer at Chitra OC, ECL. Dabor Colliery, Salanpur Area, ECL.

Job No. 111609 18

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI 6.3 Piezometer Testing

The main motive behind the installation of piezometer was to determine hydraulic conductivity to know the extent of mining disturbance, piezometric head of the aquifers encountered in the area and quality of groundwater within maximum extent of the radius of influence from mine boundary and lastly it would also be used as a regular monitoring unit for deeper aquifers. However after construction of piezometers all the efforts were made to delineate hydraulic conductivity of the targeted aquifers by pumping with compressor up to 5 hrs.

Recovery Test by using Air compressor: Aquifer performance test of piezometer is a controlled field experiment in which a well is pumped at a controlled rate and water-level response (drawdown) is measured in one or more surrounding observation wells or optionally in the pumped well (control well) itself.

Response data from recovery tests are used to estimate the hydraulic properties of the formation tapped by the piezometer. Aquifer performance test of piezometer was done through recovery methods by using air compressor. An assembly consisting of airline pipe attached with truck mounted compressor is lowered up to above 5 meters from the depth of the piezometer. Compressed air was forcefully injected to the well to create pressure which causes the water to spill over the top of well casing. A trench was created to carry the water away from the well so that it does not pond around the well. Discharge of water from the piezometer was measured by using 90o V-notch. The discharge was maintained during the aquifer performance test. The pressure at compressor was varied according to the response of the well to maintain the constant discharge during the testing. Time vs recuperation data are used to calculate the aquifer parameter. Static water level was measured prior to start of the compressor. Drawdown of water levels was created by running air compressor for a certain period of time (2 to 5 hrs depending on yield of the well). The time at which pumping starts has to be recorded. Recovery data has been recorded for piezometers after running air compressor for certain period of time. For measuring recovery level of water in piezometer, 1 inch dia of pipe along with airline pipe (2.5 inch) were lowered up to

Job No. 111609 19

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI desired depth. Water level indicator was used for measuring water level in piezometer during test. Recovery data has been analyzed using aquifer test pro (v 3.5) software. The analysis graph has been given in annexure-IA. Permeability and transmissivity value has been estimated by using recovery methods.

Slug injection test: Slug injection test was performed in piezometers having very less discharge. During development of piezometers discharge of the well was measured. Based on the discharge of the piezometers, it has been decided whether it is suitable for pumping test or slug injection test. This method can be used for estimation of permeability only. This method is based on the recovery of the well with respect to quick injection of slug of water into the well. In this method a 100 liter of drum filled with water was used to inject water into the well quickly. For measuring the recovery, water level indicator was used. Recovery data has been analyzed using aquifer test pro (v 3.5) software. The Hosrslev analysis method were used for determination of aquifer parameter. The analysis graph has been given in annexure-IB.

6.3.1 Piezometer testing in Raniganj Coalfield

Aquifer performance test in Raniganj Coalfield was started with recovery test in Madhaipur colliery (Pandaveshwar Area) on 05.06.2018. Total 25 nos of piezometer were constructed in which testing of 24 nos of piezometers were done. Piezometer testing in Bejdih colliery, having depth of 145 m could not be done due to high depth of static water level and very less discharge in piezometer. The static water level in Bejdih piezometer was 115 m. Aquifer performance test in 24 nos of piezometer were done to determine the hydraulic properties of the lower aquifer (i.e. Hydraulic conductivity/Permeability and Transmissivity). Hydraulic properties of the aquifer material of around 24 piezometers were estimated through different estimation tests such as recovery test and slug injection test. Aquifer performance test was done in Barakar beds covered by piezometers constructed in Cluster-1, 2, 3 and 4. Aquifer performance test done in Raniganj formation covered by piezometers constructed in cluster-5 to 12. From this transmissibility, permeability of the test horizons were estimated and given in Table No 3.0 and the plots are

Job No. 111609 20

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI shown in Annexures-IA and IB. The permeability value varies from 3.14E-04 to 0.778 m/day (Gaurangdih OC piezometer). The transmissivity value ranges from 6.98E-02 to 36.60 m2/day. The yield of the well varies from 0.10 to 4.54 lps (Table- 3).

6.3.2 Piezometer testing in Saharjuri Coalfield

Aquifer performance test was done in piezometer constructed in Chitra OC mine area tapping the Barakar formation. The permeability varies from 0.05 to 0.015 m/day with average transmissivity of 4.81 m2/day. Time vs drawdown are shown in Annexures.

6.3.3 Piezometer testing in Rajmahal Coalfield

Aquifer performance test was done in piezometer constructed in Rajmahal OC mine and Simlong OC mine area tapping the Barakar formation. The permeability varies from 0.105 to 0.131 m/day with average transmissivity of 5.23 m2/day. Time vs drawdown are shown in Annexures.

Fig-8: Compressor Test at MTI, Fig-9: Slug Injection Test at Sodepur Colliery, ECL Ratibati, Raniganj CF, ECL

Job No. 111609 21

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

Fig-10: Slug Injection test at Chitra OC, S. P. Mine Area, ECL

Fig-11: Compressor test at Rajmahal OC, Rajmahal Area, ECL

Job No. 111609 22

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Table No-3: Aquifer parameters determined from piezometers constructed in ECL command area S. Piezome Latitudes Longitudes R.L Depth Water Piezometer APT Permea *Transmi No. ter of (m) level discharge Performed bility ssivity well (BGL) (lps) (m/day) (m2/day) (m) in m.

1 1/MG/CP 23º48'19" 86º40'32" E 145 60 7.87 0.41 Pumping 3.20 E- 1.06 -01 N test 02 2 1/MG/HP 23º47'00" 86º41'34" E 135 90 8.26 0.82 Slug 0.122 -02 N Injection Test 3 2/MG/KP 23º44'46" 86º47'58" E 125 110 19.3 1.0 Pumping 0.441 23.4 -01 N test 4 2/MG/RP 23º45'14" 86º46'23" E 141 46 16.08 0.10 Pumping 5.73 E- -02 N test 03 5 3/SL/BP- 23º46'55" 86º52'11" E 163 114 83.9 0.10 Slug 3.94 E- 01 N Injection 03 Test 6 3/SL/DP- 23º46'58" 86º54'14" E 153 70 27.63 0.82 Pumping 0.1 1.81 02 N test 7 4/SL/GP- 23º48'46" 87º0'5" E 142 110 15.07 4.54 Pumping 0.778 36.6 01 N test 8 5/SO/PP- 23º39'33" 86º50'17" E 122 110 78.3 0.15 Slug 2.18 E- 01 N Injection 03 Test 9 6/SO/BP- 23º41'20" 86º53'07" E 132 145 115 0.10 Slug ATP not done due to 02 N Injection high depth of Water Test level 10 6/SO/SP- 23º41'17" 86º51'15" E 112 100 42.02 0.10 Slug 3.17 E- 03 N Injection 04 Test 11 7/SR/BP- 23º43'45" 86º59'39" E 120 59 9.22 0.59 Pumping 1.53 E- 0.336 02 N test 02 12 8/SR/NP- 23º40'26" 87º02'00" E 105 130 19.47 0.41 Slug 5.30 E- 04 N Injection 02 Test 13 9/KN/AP- 23º37'07" 87º05'07" E 107 124 51.4 0.10 Slug 2.50 E- 01 N Injection 02 Test 14 9/ST/RP- 23º39'08" 87º02'34" E 94 132 24.55 0.82 Pumping 2.54 E- 03 N test 02 15 10/KJ/KP 23º36'08" 87º11'07" E 78 94 58.1 0.15 Slug 1.80 E- -01 N Injection 03 Test 16 10/KJ/M 23º37'19" 87º10'33" E 94 35 12.58 0.10 Slug 3.59 E- P-03 N Injection 03 Test 17 10/KN/P 23º38'56" 87º09'22" E 96 90 8.4 0.41 Slug 3.14 E- P-06 N Injection 04 Test 18 11/KD/K 23º40'09" 87º10'13" E 113 65 7.4 0.41 Pumping 1.25 E- 0.275 P-04 N test 02 19 12/JH/JP 23º40'09" 87º17'29" E 92 105 21.6 0.41 Slug 1.58 E- -01 N Injection 02 Test 20 12/SB/S 23º41'31" 87º12'09" E 108 104 10.9 0.10 Pumping 1.25 E- 6.89 E-02 P-03 N test 03

Job No. 111609 23

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI S. Piezome Latitudes Longitudes R.L Depth Water Piezometer APT Permea *Transmi No. ter of (m) level discharge Performed bility ssivity well (BGL) (lps) (m/day) (m2/day) (m) in m.

21 12/PD/M 23º42'21" 87º21'00" E 75 50 4.4 0.41 Pumping 0.122 2.56 P-08 N test 22 12/PD/P 23º43'37" 87º16'14" E 76 53 5.4 0.41 Pumping 5.02 E- 1.2 P-10 N test 02 23 12/BN/T 23º39'11" 87º15'48" E 96 55 16.3 0.10 Pumping 3.85 E- 9.62 E-02 P-11 N test 03 24 SL/MP- 23º47'13" 86º57'05" E 138 80 34.45 0.82 Slug 0.134 01 N Injection Test 25 KPZ-01 23º35'38" 87º02'19" E 102 75 10.98 0.10 Pumping 1.55 E- 7.31 E-02 N test 03 26 CPZ-01 24º06'44" 86º51'15" E 191 148 9.89 1.42 Pumping 5.00 E- 4.81 N test 02 27 CPZ-02 24º07'15" 86º51'57" E 200 35 17.3 0.41 Slug 1.57 E- N Injection 02 Test 28 RPZ-01 25º02'36" 87º20'54" E 79 35 9.37 0.82 Slug 0.131 N Injection Test 29 RPZ-02 25º3'3" N 87º22'53" E 73 87 22.03 1.10 Pumping 0.105 5.23 test 30 SPZ-01 24º45'13" 87º26'45" E 110 54 15 0.41 Slug 0.106 N Injection Test * Transmissivity cannot be determined in case of Slug Injection Test

6.4 Installation of AWLR (Automatic water level recorder)

It is an automated continuous water level recording & monitoring system along with submersible pressure transmitter, for water level in bore wells and underground reservoirs. The system can be configured and managed remotely. It is easy to handle and install, program with password protection, continuous data logging with USB port. Out of 30 piezometer constructed in ECL command area, 15 nos of piezometers were equipped with AWLR system.

The pressure sensor is submersible type hydrostatic transmitter, installed at site on the bore well. It measures water level based on hydrostatic pressure of water column and provides 4-20 mA output. The transmitter is fitted with specially designed cable with vent tube for atmospheric pressure compensation.

Job No. 111609 24

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI

Fig-12: AWLR installed at Piezometer in Rajmahal Project, ECL.

The automatic water level monitoring system data logger is programmed to automatically store the water head/pressure at fixed intervals. Data can be downloaded on a laptop/mobile in field through Bluetooth or cable. The water level data can be easily corrected for specific gravity of water. The 15 nos of piezometers were installed with AWLR system throughout the ECL command area. The list of the installed AWLR in piezometers has been given in Table No-4.

Job No. 111609 25

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Table No-4: Final Location of AWLR (Automatic Water level recorder) installed in piezometers. S. Piezomete Location Name Name of Name of Latitudes Longitudes R.L of Depth No. rs Mines Cluster well (m) /Mines (m) 1 1/MG/CP-01 Chapapur Incline Mugma Area Cluster-1 23º48'19" N 86º40'32" E 145 60 2 2/MG/KP-01 Kumardhubi Mugma Area Cluster-2 23º44'46" N 86º47'58" E 125 110 (Barmuri Manager Office) 3 3/SL/BP-01 Bonjhemehari Salanpur Area Cluster-3 23º46'55" N 86º52'11" E 163 114 Colliery Dispensari 4 5/SO/PP-01 Bhamaria Sodepur Area Cluster-5 23º39'33" N 86º50'17" E 122 110 5 6/SO/SP-03 Sodepur 9/10 Pit Sodepur Area Cluster-6 23º41'17" N 86º51'15" E 112 100 Office 6 7/SR/BP-02 West Bhanora Sripura Area Cluster-7 23º43'45" N 86º59'39" E 120 59 7 8/SR/NP-04 Ningha Colliery Sripur Area Cluster-8 23º40'26" N 87º02'00" E 105 130 8 9/ST/RP-03 MTI,Ratibati Satgram Area Cluster-9 23º39'08" N 87º02'34" E 94 132 9 10/KJ/KP-01 Central Kajora Kajora Area Cluster-10 23º36'08" N 87º11'07" E 78 94 10 12/JH/JP-01 Jhanjra Jhanjra Area Cluster-12 23º40'09" N 87º17'29" E 92 105 11 12/SB/SP-03 Sonepur Bazari SB Area Cluster-12 23º41'31" N 87º12'09" E 108 104 12 12/PD/PP-10 Pandaveshwar UG Pandaveswar Cluster-12 23º43'37" N 87º16'14" E 76 53 Area 13 SL/MP-01 Mohanpur Salanpur Area Mohanpur 23º47'13" N 86º57'05" E 138 80 Workshop OCP

14 CPZ-01 Chitra Magazine S.P. Mine Chitra 24º06'44" N 86º51'15" E 191 148 Area OCP 15 RPZ-01 Rajmahal Old Rajmahal Area Rajmahal 25º02'36" N 87º20'54" E 79 35 workshop OCP

Job No. 111609 26

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI 7.0 WATER SAMPLE COLLECTION AND QUALITY ANALYSIS.

Water Sampling and Analysis involves the collection of water samples and measurement for chemical and biological characteristics to determine its quality. These results are compared against water quality standards in regulations and guidelines to determine its use and/or the treatment required to make the water suitable for its intended use (e.g. drinking water).

In order to evaluate the present state of water quality in piezometers of deeper aquifer constructed in Raninganj CF (25 nos), Rajmahal CF (3 nos) and Saharjuri CF (2 nos), a total 30 nos of water sample from piezometers were collected and analyzed. Hydrogeologist team from CMPDI (HQ) was associated with sampling of groundwater in piezometer. The groundwater samples were collected during the development of the well. Prescribed quantity of collected groundwater samples were placed directly into sample bottles, labeled, catalogued on Chain-of-Custody forms and placed in dispatch boxes for shipment to the CMPDI RI-1 laboratory for required analysis. Indian standard drinking water specification (IS-10500:2012) norms has been followed for analysis purposes. The analysis report has been attached with annexure-II.

Fig-13: Water Samples collected from Fig-14: Water Samples collected from Piezometers drilled in Rajmahal Area Piezometers drilled in Satgram Area, ECL

Job No. 111609 27

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI The pH value of groundwater in piezometers are found to be in the range of 6.77 (Barmuri OC, Mugma Area) to 8.71 (Bhamaria Unit, Sodepur Area) in Raniganj Coalfield. The pH value of groundwater in Chitra OC Mine Area are found to be in the range of 7.76 to 8.09. The pH value of groundwater in piezometers are found to be in the range of 8.02 to 8.09 in Rajmahal OC Area. 7.09 pH value has been found in Simlong OC area.

The pH value is found to be high in piezometer drilled in Bhamaria Unit of Perbeliya colliery, Sodepur Area, Raniganj CF, ECL. The dissolve solids are also found to be high in the same piezometer which is around 920 mg/l. Lowest level of dissolve solids (96 mg/l.) has been found in piezometers drilled in Chitra OC Mine Area. Hardness of water in piezometers is in the range of 96 (Gaurangdih OC Weigh Bridge, Salanpur Area) to 1016 mg/l (Ratibati MTI, Satgram Area) in Raniganj Coalfield. In Chitra OC mine Area, the total hardness varies from 48 to 60 mg/l. Total hardness in Rajmahal OC area varies from 92 to 108 mg/l. Total Hardness of water in piezometer drilled in Simlong OC IS 148 mg/l.

Chlorides, Sulphates and nitrates are found within the acceptable limit. Phenolic compounds, Cyanides and Pesticides are found to be the below the detection limit (BDL). Heavy metal values are found to be within the IS: 10,500 - 2012 limit. The variation of water quality parameters may be attributed due to local geo-genic conditions of the formation.

Job No. 111609 28

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IA

Job No. 111609 29

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IA

Job No. 111609 30

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IA

Job No. 111609 31

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IA

Job No. 111609 32

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IB

Job No. 111609 33

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IB

Job No. 111609 34

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IB

Job No. 111609 35

Construction and Installation of Piezometers in Raniganj, Saharjuri & Rajmahal Coalfields CMPDI Annexure-IB

Job No. 111609 36

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 1 Month: July. Name of the Stations & Code : 1. CP – 01 : Chapapur Incline, Mugma Area

Indian Standard Drinking Water Date of Sampling Sl. Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

28-Jul-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 7.92 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 188 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 35 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 408 500 2000 Gravemetric 10.0

11 Calcium 56 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 58 200 400 Turbidity 2.0

15 Nitrate 8.34 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.24 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 252 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 1

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 1 Month: December. Name of the Stations & Code : 2. HP – 02 : Hariajam Colliry, Mugma Area

Indian Standard Drinking Water Date of Sampling Sl. Specification Detection No. Parameters (IS-10500:2012) Method of Detection Limit

Acceptable Permissible 10-Dec-18 Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -l

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 6.85 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 584 300 600 EDTA 0.5

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 27 250 1000 Argentometric 2.0

9 Res Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 270 500 2000 Gravemetric 25.0

11 Calcium 260 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese <0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 35 200 400 Turbidity 2.0

15 Nitrate 9.24 45.0 No relaxation Spectrophotometric 0.3

16 Fluoride 0.64 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.005

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.005

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

Not Specified Multiple Tube 1.0 23 Coliforms (MPN) Nil Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 118 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 2

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 2 Month: December. Name of the Stations & Code : 3. KP – 01 : Barmuri OCP, Kumarduhubi Colliery, Mugma Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

10-Dec-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 4 1.0 5.0 Nephelometric 1.0

5 pH 6.77 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 704 300 600 EDTA 4.0

7 Iron 0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 28 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 307 500 2000 Gravemetric 10.0

11 Calcium 384 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese <0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 69 200 400 Turbidity 2.0

15 Nitrate 8.26 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.72 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 116 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 3

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 2 Month: September. Name of the Stations & Code : 4. RP – 02 : West-Barakar Quarry, Rajpura, Mugma Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

22-Sep-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit 3 5 15 Platinum Cobalt 1.0 Max

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 4 1.0 5.0 Nephelometric 1.0

5 pH 8.12 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 228 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 107 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 506 500 2000 Gravemetric 10.0

11 Calcium 68 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.03 0.1 0.3 AAS-Flame 0.02

14 Sulphate 106 200 400 Turbidity 2.0

15 Nitrate 5.38 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.38 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 124 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 4

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 3 Month: July. Name of the Stations & Code : 5. BP - 01 : Banjemari Dispensary, Salanpur Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

4-Jul-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 8.2 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 116 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 45 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 264 500 2000 Gravemetric 10.0

11 Calcium 36 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 15 200 400 Turbidity 2.0

15 Nitrate 3.28 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.64 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 320 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 5

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 3 Month: July. Name of the Stations & Code : 6. DP - 02 : Hindustan Alkusa Colliery, Dabar, Salanpur Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

21-Jul-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 8.42 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 152 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 18 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 338 500 2000 Gravemetric 10.0

11 Calcium 52 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 37 200 400 Turbidity 2.0

15 Nitrate 8.32 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.28 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 184 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 6

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 4 Month: August. Name of the Stations & Code : 7. GP - 01 : Gourandi OC, Weighbridge, Salanpur Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

20-Aug-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 4 1.0 5.0 Nephelometric 1.0

5 pH 8.06 6.5-8.5 No relaxation Electrometric -

6 Total Hardness 96 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 14 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 240 500 2000 Gravemetric 10.0

11 Calcium 28 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.03 0.1 0.3 AAS-Flame 0.02

14 Sulphate 68 200 400 Turbidity 2.0

15 Nitrate 7.28 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.26 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 160 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 7

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 5 Month: July. Name of the Stations & Code : 8. PB - 02 : Bhamaria Unit, Colliery, Sodepur Area

Indian Standard Drinking Water Date of Sampling Sl. Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

16-Jul-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.71 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 368 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 47 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 920 500 2000 Gravemetric 10.0

11 Calcium 112 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 62 200 400 Turbidity 2.0

15 Nitrate 9.32 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.36 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 220 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 8

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 6 Month: July. Name of the Stations & Code : 9. BP – 02 : Ranishayar Colony, Bejdih UG, Sodepur Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

12-Jul-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 7.95 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 160 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 60 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 356 500 2000 Gravemetric 10.0

11 Calcium 48 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.03 0.1 0.3 AAS-Flame 0.02

14 Sulphate 44 200 400 Turbidity 2.0

15 Nitrate 5.08 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.54 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 148 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 9

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 6 Month: July. Name of the Stations & Code : 10. SP – 03 : 9/10 Pit office, Sodepur Colliery, Sodepur Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

13-Jul-18 Acceptable Permissible Limit Limit

1 Colour,Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 1 1.0 5.0 Nephelometric 1.0

5 pH 8.51 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 236 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 46 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 516 500 2000 Gravemetric 10.0

11 Calcium 68 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 35 200 400 Turbidity 2.0

15 Nitrate 5.44 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.42 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 292 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 10

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 7 Month: April Name of the Stations & Code : 11. BP – 02 : Manager’s Office, West Bhanora UG, Sripur Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

27-Apr-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 7.5 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 192 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 34 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 474 500 2000 Gravemetric 10.0

11 Calcium 56 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 80 200 400 Turbidity 2.0

15 Nitrate 8.76 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.79 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 320 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 11

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 8 Month: June. Name of the Stations & Code : 12. NP - 04 : Ningah Colliery, Sripur Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

28-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.66 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 232 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 43 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 546 500 2000 Gravemetric 10.0

11 Calcium 72 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 12 200 400 Turbidity 2.0

15 Nitrate 4.42 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.28 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 148 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 12

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 9 Month: June. Name of the Stations & Code : 13. AP – 01 : Agent’s Office, Amritnagar UG, Kunusroria Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

22-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 8.32 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 228 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 55 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 530 500 2000 Gravemetric 10.0

11 Calcium 68 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 63 200 400 Turbidity 2.0

15 Nitrate 5.12 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.4 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 240 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 13

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 9 Month: December. Name of the Stations & Code : 14. RP – 03 : Mining Training Institute, Ratibati UG, Satgram Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

10-Dec-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 6.86 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 1016 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 159 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 584 500 2000 Gravemetric 10.0

11 Calcium 486 75 200 EDTA 1.60

12 Copper 0.05 0.05 1.5 AAS-Flame 0.03

13 Manganese <0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 104 200 400 Turbidity 2.0

15 Nitrate 6.24 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.48 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 86 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 14

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 10 Month: June. Name of the Stations & Code : 15. KP – 01 : Parama B. Ed. College, Central Kajora UG, Kajora Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

15-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.33 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 124 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 22 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 280 500 2000 Gravemetric 10.0

11 Calcium 36 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 9 200 400 Turbidity 2.0

15 Nitrate 5.24 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.42 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 188 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 15

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 10 Month: June. Name of the Stations & Code : 16. MP – 03 : Manager’s Office, Madabpur UG, Kajora Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

18-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 8.47 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 220 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 37 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 490 500 2000 Gravemetric 10.0

11 Calcium 68 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 76 200 400 Turbidity 2.0

15 Nitrate 6.24 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.56 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.02 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 168 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 16

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 10 Month: June. Name of the Stations & Code : 17. PP – 06 : Dispensary, Colliery,

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit 20-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 8.11 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 240 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 119 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 602 500 2000 Gravemetric 10.0

11 Calcium 72 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 98 200 400 Turbidity 2.0

15 Nitrate 3.64 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.36 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.02 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation 24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 248 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 17

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 11 Month: June. Name of the Stations & Code : 18. KP -04 : Associate Power Corp., New Kenda UG, Kenda Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

26-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 1 1.0 5.0 Nephelometric 1.0

5 pH 7.96 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 140 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 60 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 314 500 2000 Gravemetric 10.0

11 Calcium 44 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 31 200 400 Turbidity 2.0

15 Nitrate 6.1 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.3 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 100 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 18

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 19 Month: May. Name of the Stations & Code : 19. JP – 01 : Jhanjra Area Office, Jhanjra UG, Jhanjra Area

Indian Standard Date of Drinking Water Sl. Sampling Detection Parameters Specification Method of Detection No. Limit (IS-10500:2012)

17-May-18 Acceptable Permissible Limit Limit

1 Colour,Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity,NTU Max 4 1.0 5.0 Nephelometric 1.0

5 pH 8.08 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 208 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 30 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 522 500 2000 Gravemetric 10.0

11 Calcium 64 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 108 200 400 Turbidity 2.0

15 Nitrate 5.28 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.76 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 308 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 19

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 12 Month: June. Name of the Stations & Code : 20. SP – 03 : Magazine, Haripur Colliery, Sonepur Bazari Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Method of Detection Parameters No. (IS-10500:2012) Detection Limit

8-Jun-18 Acceptable Permissible Limit Limit

1 Colour,Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity,NTU Max 4 1.0 5.0 Nephelometric 1.0

5 pH 8.25 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 116 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 19 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 240 500 2000 Gravemetric 10.0

11 Calcium 32 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.03 0.1 0.3 AAS-Flame 0.02

14 Sulphate 21 200 400 Turbidity 2.0

15 Nitrate 5.82 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.55 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube

24 Phenolics <0.001 0.001 0.002 Chloroform 0.001

25 Alkalinity 156 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 20

ANNEXURE-II Eastern Coalfields limited CMPDI

Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster: 12 Month: June. Name of the Stations & Code : 21. MP – 08 : Canteen near Pit -9, Madhaipur UG, Pandaveswar Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

5-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 7.96 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 152 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 70 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 324 500 2000 Gravemetric 10.0

11 Calcium 48 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 34 200 400 Turbidity 2.0

15 Nitrate 4.56 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.25 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 228 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 21

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 12 Month: May. Name of the Stations & Code : 22. PP – 10 : Manager’s Office, Pandeveswer UG, Pandaveswar Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

16-May-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.01 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 136 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 50 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 276 500 2000 Gravemetric 10.0

11 Calcium 40 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 39 200 400 Turbidity 2.0

15 Nitrate 6.18 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.32 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.02 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 180 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 22

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Cluster : 12 Month: June. Name of the Stations & Code : 23. TP – 11 : Bankola Area Hospital, Tilaboni UG, Bankola Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit 11-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 8.5 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 176 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 21 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 390 500 2000 Gravemetric 10.0

11 Calcium 52 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 17 200 400 Turbidity 2.0

15 Nitrate 8.22 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.46 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 192 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 23

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project Month: July. Name of the Stations & Code : 24. MP - 01 ; Mohanpur Workshop, Mohanpur OCP, Salanpur Area

Indian Standard Date of Drinking Water Sl. Detection Parameters Sampling Specification Method of Detection No. Limit (IS-10500:2012)

19-Jul-18 Acceptable Permissible Limit Limit 1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 1 1.0 5.0 Nephelometric 1.0

5 pH 8.04 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 244 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 14 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 538 500 2000 Gravemetric 10.0

11 Calcium 76 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 94 200 400 Turbidity 2.0

15 Nitrate 6.24 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.34 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation 24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 160 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 24

ANNEXURE-II Eastern Coalfields limited CMPDI

Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project Month: June. Name of the Stations & Code : 25. KPZ – 01 : Kalidaspur Airshaft, Kalidaspur UG, Satgram Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

25-Jun-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 4 1.0 5.0 Nephelometric 1.0

5 pH 8.44 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 188 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 38 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 476 500 2000 Gravemetric 10.0

11 Calcium 56 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 32 200 400 Turbidity 2.0

15 Nitrate 7.24 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.66 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 140 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 25

ANNEXURE-II Eastern Coalfields limited CMPDI

Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project: Chitra Month: September. Name of the Stations & Code : 26. CPZ – 01 ; Near Magazine, Chitra Project, S.P. Mine Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit 13-Sep-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 4 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.09 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 60 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 5 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 132 500 2000 Gravemetric 10.0

11 Calcium 24 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 10 200 400 Turbidity 2.0

15 Nitrate 6.76 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.32 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube - Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 144 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 26

ANNEXURE-II Eastern Coalfields limited CMPDI

Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project : Chitra Month: September. Name of the Stations & Code : 27. CPZ – 02 : Old ECL Colony, Chitra Project, S.P.Mine Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit 12-Sep-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 7.76 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 48 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 0.7 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 96 500 2000 Gravemetric 10.0

11 Calcium 16 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.03 0.1 0.3 AAS-Flame 0.02

14 Sulphate 11 200 400 Turbidity 2.0

15 Nitrate 7.56 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.38 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.04 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 128 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 27

ANNEXURE-II Eastern Coalfields limited CMPDI

Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project : Rajmahal Month: September. Name of the Stations & Code : 28. RPZ – 01 : Old Work shop Dozer Section, Rajmahal Area

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit 17-Sep-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.02 6.5-8.5 No relaxation Electrometric

6 Total Hardness 92 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 0.17 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 200 500 2000 Gravemetric 10.0

11 Calcium 28 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 28 200 400 Turbidity 2.0

15 Nitrate 7.28 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.2 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 236 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 28

ANNEXURE-II Eastern Coalfields limited CMPDI

Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project : Rajmahal Month: September. Name of the Stations & Code : 2. RPZ – 29 : Lohandiya Panchyat Bhawan, Rajmahal Area

Indian Standard Date of Drinking Water Sl. Sampling Method of Detection Parameters Specification No. Detection Limit (IS-10500:2012)

18-Sep-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 3 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 2 1.0 5.0 Nephelometric 1.0

5 pH 8.09 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 108 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 21 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 226 500 2000 Gravemetric 10.0

11 Calcium 32 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 12 200 400 Turbidity 2.0

15 Nitrate 5.8 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.42 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube

24 Phenolics <0.001 0.001 0.002 Chloroform 0.001

25 Alkalinity 192 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 29

ANNEXURE-II Eastern Coalfields limited CMPDI Ground Water Quality Report Name of the Company: Eastern Coalfield Limited Year : 2018. Standalone Project : Simlong Month: September. Name of the Stations & Code : 30. SPZ – 01 : Simlong OCP

Indian Standard Date of Drinking Water Sl. Sampling Specification Detection Parameters Method of Detection No. (IS-10500:2012) Limit

20-Sep-18 Acceptable Permissible Limit Limit

1 Colour, Hazen unit Max 5 5 15 Platinum Cobalt 1.0

2 Odour Unobjectionable Agreeable Physical -

3 Taste Agreeable Agreeable Physical -

4 Turbidity, NTU Max 3 1.0 5.0 Nephelometric 1.0

5 pH 7.95 6.5-8.5 No relaxation Electrometric 0.01

6 Total Hardness 148 300 600 EDTA 4.0

7 Iron <0.06 0.3 No relaxation AAS-Flame 0.06

8 Chlorides 11 250 1000 Argentometric 2.0

9 Residual Free chlorine <0.02 0.2 1.0 Spectrophotometric 0.02

10 Dissolved Solids 330 500 2000 Gravemetric 10.0

11 Calcium 44 75 200 EDTA 1.60

12 Copper <0.03 0.05 1.5 AAS-Flame 0.03

13 Manganese 0.02 0.1 0.3 AAS-Flame 0.02

14 Sulphate 62 200 400 Turbidity 2.0

15 Nitrate 6.28 45.0 No relaxation Spectrophotometric 0.5

16 Fluoride 0.34 1.0 1.5 SPADNS 0.02

17 Selenium <0.002 0.01 No relaxation AAS-GTA 0.002

18 Arsenic <0.002 0.01 0.05 AAS-VGA 0.002

19 Lead <0.005 0.01 No relaxation AAS-GTA 0.005

20 Zinc 0.03 5 15 AAS-Flame 0.01

21 Hex Chromium <0.01 0.05 0.05 Colorimetric 0.01

22 Boron <0.2 0.5 1.0 Colorimetric Carmine 0.20

23 Coliforms (MPN) Nil Not Specified Multiple Tube 1.0 Fermentation

24 Phenolics <0.001 0.001 0.002 Chloroform Extraction 0.001

25 Alkalinity 168 200 600 Indicator 4.0

26 Cadmium <0.0005 0.003 No relaxation AAS-GTA 0.0005

All values are expressed in mg/L unless specified.

Environmental Monitoring report Job no-110310 Page - 30