Chapter-6: ENVIRONMENTAL MONITORING PROGRAMME

Final Comprehensive Environmental Impact Doc. No.: 9573-999-GEG-S-001
Assessment Report for Kudgi Super Thermal Rev. No.: 1
Rev. Date: 01-09-2011
Power Project, Stage-I (3x800 MW) Page No.: 6-1

Chapter-6: ENVIRONMENTAL MONITORING PROGRAMME

Regular monitoring of critical environmental parameters is of immense
importance to assess the status of environment during plant operation. The
monitored data can serve as an indicator for any change in environmental
quality due to operation of the plant with respect to baseline environmental
conditions, so that suitable mitigatory steps could be taken in time to
safeguard the environment.

The monitoring plan for the project has been drawn with the following broad
objectives:

a) Assess the changes in environmental conditions, if any, during
operation of the project.

b) Monitor the effective implementation of mitigatory measures envisaged
for Stage-I.

c) Warning of any significant deterioration in environmental quality so that
additional mitigatory measures may be planned in advance.

Proposed pollution monitoring programme is presented in Table 6.1. A brief
description of the plan is given in the following sections.

6.1 MONITORING OF ENVIRONMENTAL PARAMETERS

Regular monitoring of pollutants in different environmental disciplines like
ambient air, stack emission, treated waste water, etc. was conducted and the
data submitted to State Pollution Control Board regularly. The monitoring
locations will be finalized in consultation with State Pollution Control Board.
The plant is equipped with all necessary equipment and manpower for
ensuring effective monitoring.

6.1.1 Meteorology

It is recommended that a full fledged meteorological station will be set-up at
site to generate on-site meteorological data during construction and operation
of the project as per Table 6.1

6.1.2 Ambient Air Quality

As a part of EIA study ambient air quality is presently being monitored at four
locations around the project, selected on the basis of mathematical modelling
for dispersion of atmospheric emissions. The parameters and frequency of
monitoring are presented in Table 6.1.

MANTEC CONSULTANTS (P) LTD., NEW DELHI 6.0 ENVIRONMENTAL MONITORING PROGRAMME

Final Comprehensive Environmental Impact Doc. No.: 9573-999-GEG-S-001
Assessment Report for Kudgi Super Thermal Rev. No.: 1
Rev. Date: 01-09-2011
Power Project, Stage-I (3x800 MW) Page No.: 6-2

It is recommended that AAQ monitoring should be continued at four locations
during operation of the project. The monitoring location maybe further
optimised based on site meteorological data and AAQ data generated during
EIA study.

Table 6.1: Proposed Environmental Monitoring Programme for NTPC
Kudgi, Stage-I (3X800MW)

Area of Number of Frequency of Parameters to be Analyzed
Monitoring Sampling Sampling
Stations
Meteorology Continuous/ Daily Wind speed and direction,
One Max. and Min. Temperature,

Humidity, Solar radiation,
Atm. Pressure, Rainfall

Ambient Air 4 Stations Twice a week; 24 SPM, RPM, SO2 and
Quality 2 stacks hourly NOx,O3,Hg
5 stations
Stack Twice a week SPM,SO2 and NOx
emissions Twice a year for 24
Ambient Equivalent
Noise hours continuous Sound Pressure

Water Quality 3 Locations Monthly Levels (Leq) at day and
Night time.
(Ground Water) Twice a year
pH, Temp, Conductivity
2 locations for TSS, TDS, BOD, O&G,
Surface Water
(Krishna river at Phenolics
Almatti dam, Hire
Heavy Metals
Nallah)
Liquid Monthly pH, Temp, Cond., TSS,
Effluents Main Plant TDS, BOD, O&G, Phenolics
Effluents Quarterly
Monthly Heavy Metals
Sanitary Effluents
Quarterly pH, Temp, Cond., TSS,
TDS, BOD, O&G, Phenolics

Heavy Metals

6.1.3 Ambient Water Quality

The raw water quality of Krishna River down stream in confluence with Hire
nallah shall be regularly monitored. The analysis of physico-chemical and
bacteriological parameters considered on a monthly basis while the analysis
of heavy metals shall be conducted on a six months basis.

MANTEC CONSULTANTS (P) LTD., NEW DELHI 6.0 ENVIRONMENTAL MONITORING PROGRAMME

Final Comprehensive Environmental Impact Doc. No.: 9573-999-GEG-S-001
Assessment Report for Kudgi Super Thermal Rev. No.: 1
Rev. Date: 01-09-2011
Power Project, Stage-I (3x800 MW) Page No.: 6-3

In addition, ground water quality at three locations around the ash disposal
area shall be monitored on quarterly basis for physico-chemical parameters
and on twice a year basis for heavy metals.

6.1.4 Effluents Quality

Main plant effluents comprising of boiler blow down and DM Plant
neutralisation pit shall be passed through a central monitoring basin (CMB).
The CMB will act as equalisation chamber for both flow as well as quality of
effluent. The final effluent shall be corrected for pH and then discharged
through plant drains. Physico-chemical parameters (e.g. pH, temperature,
conductivity and TSS) was monitored on a regular basis.

In order to monitor the effective functioning and efficiency of the sewage
treatment plant, the effluent was monitored on daily basis, especially BOD.

6.1.5 Noise

High noise areas inside the power plant and industrial, commercial, residential
and silence areas around the plant shall be monitored with a frequency of
twice in a year.

6.2 INSTITUTIONAL SETUP

The post operational monitoring programme will be under the supervision of
the Environmental Management Group (EMG) at project site. The EMG at site
will interact with State Pollution Control Board and other environmental
regulatory bodies for all environmental related issues during operation of the
station.

The responsibility of environment shall lie with Environmental Management
Group at the project, which act as coordinator for environmental matters.
This group shall also act as a nodal agency for various groups at project, as
well as outside agencies like Karnataka State Pollution Control Board and
MoEF. The main functions of EMG at Project are summarized as follows:

• Compliance with statutory requirements
• Obtaining Consent order from KSPCB
• Environmental Monitoring
• Analysis of environment data, report preparations and transmission of

report to statutory authorities.
• Coordination with statutory bodies.

The status of implementation of mitigatory measures was regularly monitored
during Project Review Meetings held at projects every month. Dedicated

MANTEC CONSULTANTS (P) LTD., NEW DELHI 6.0 ENVIRONMENTAL MONITORING PROGRAMME

Final Comprehensive Environmental Impact Doc. No.: 9573-999-GEG-S-001
Assessment Report for Kudgi Super Thermal Rev. No.: 1
Rev. Date: 01-09-2011
Power Project, Stage-I (3x800 MW) Page No.: 6-4

groups for operation and maintenance of major systems like Electrostatic
Precipitators, Ash Handling Plant, Coal Handling Plant, Water and Waste
Water Treatment Plants etc. shall be formed during operation phase. These
groups will ensure effective functioning of the system and the same will be
monitored during Operation Review Meetings held at project.

MANTEC CONSULTANTS (P) LTD., NEW DELHI 6.0 ENVIRONMENTAL MONITORING PROGRAMME