Environmental and Social Monitoring Report

Project Number: 44946-014 June 2018

THA: Nong Saeng Natural Gas Power Project

Prepared by Gulf JP NS Company Limited

The environmental and social monitoring report is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “Terms of Use” section of this website.

In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area.

ENVIRONMENTAL AND SOCIAL ISSUES COMPLIANCE REPORT

NONG SAENG POWER PLANT PROJECT

PROPOSE

ASIAN DEVELOPMENT BANK

GULF JP NS COMPANY LIMITED

JANUARY JUNE 2018

- TY:2432489.23 1

ENVIRONMENTAL AND SOCIAL ISSUES COMPLIANCE REPORT

The Nong Saeng Power Plant Project of Gulf JP NS Co., Ltd., designed to have a total installed capacity of approximately 1,649.6 MW using natural gas as fuel, comprises 2 blocks of 824.8 MW combined cycle power plant. Most electricity to be generated or about 1,600 MW will be sold to the Electricity Generating Authority of Thailand (EGAT), whereas the remaining portion of about 49.6 MW will be reserved for in-plant use. It is located in a total area of approximately 568 rai, which is divided into 2 portions: the power plant area of approximately 298 rai in Moo 4, Ban Huaiba, Nong-Kob Sub-district, Nong Saeng District of Saraburi Province; and the reservoir area of approximately 270 rai in Moo 7, Ban Tamsinthusopa, Nong-Namsai Sub-district and Moo 2, Ban Klong, Kok Muang Sub-district, Pachee District of Phra Nakhon Si Ayutthaya Province. The project detail on below. (1) Project Title : Nong Saeng Power Plant Project (2) Project capacity : 1,649.6 MW (3) Project Owner : Gulf JP NS Co., Ltd. (4) EIA Approved : September 16, 2009 (5) Target completion period : June 1, 2014 for Block No.1 : December 1, 2014 for Block No.2 Summary of the potential environmental impacts during operation period during January to June 2018, the power plant was carried out by approximately 66 employees.

- TY:2432489.23 2

1. Actions on Environmental Mitigative Measures (during January to June 2018) Air Quality

- The power plant uses natural gas as fuel to generate electricity and the Dry Low NOx Combustion

System was installed for controlling NOx emission not to exceed 70 ppm at 7% O2. - The stack emission were monitored for the concentrations of sulfur dioxide, oxides of nitrogen, particulate matter, carbon monoxide and oxygen at HRSG11, HRSG12, HRSG21 and HRSG22 stacks by stack sampling. During January to June 2018, the concentrations of oxides of nitrogen, sulfur dioxide and carbon monoxide were found to be in the range of 40.91-47.18, 0.17-0.57 and

0.28-207.20 ppm at 7% O2 respectively. The concentrations of particulate matter were found to be 3 in range of 1.04-1.72 mg/Nm at 7% O2 and the concentration of oxygen were found to be in the range of 13.6-14.6%, all monitored values complied with the assigned values in the EIA report and the emission standard notified by the Ministry of Industry B.E.2547. - The continuous emission monitoring systems CEMs were installed at the HRSG11, HRSG12, HRSG21 and HRSG22 and stack for continuously monitoring the concentrations of oxide of nitrogen, sulfur dioxide, particulate matter, oxygen and carbon monoxide. During January to June 2018, the concentrations of oxides of nitrogen, sulfur dioxide and carbon monoxide were found to

be in the range of 10.40-60.60, 0.00-3.20 and 0.00-360.20 ppm at 7% O2 respectively. The 3 concentrations of particulate matter were found to be in the range of 0.00-12.90 mg/Nm at 7% O2 and oxygen were found to be in the range of 13.00-15.70 % and complied with the assigned values in the EIA report and the emission standard, all audited values complied with the standard of U.S. EPA. - The monitoring screen was installed in front of the power plant for displaying the results of stack emission and ambient air quality monitoring. - The ambient air quality monitoring systems (AAQMS) which are installed in 4 community areas were monthly inspection. AAQMS was normal operation. The monitoring results of the ambient air quality during January to June 2018 were all in compliance.

Sound Pressure Level - The combustion turbines and loud noise equipment such as gas compressor was installed with the building s equipped with acoustic walls and enclosures. - Silencer was equipped at the pipe ends where loud noise may be generated. The efficiency of silencer was maintained in Combustor inspection and turbine inspection. Respectively. The results of installation showed that no abnormality was detected. - The signs or symbols were post in the areas where noise levels exceed 80 dB A , i.e., gas turbine, steam turbine, etc. including to provide the personal protective equipment, e.g., ear muffs or ear plugs for the employees working in the areas where noise levels exceed 80 dB A - The measurement results were compared with the standard of 90 dB A specified in the Notification of the Ministry of industry, B.E.2546 and Notification of the Ministry of Labour B.E.2549 for working time not exceeding 8 hours a day, all measured values complied with standard.

- TY:2432489.23 3

Surface Water Hydrology and Surface Water Quality - The automatic water level monitoring system was installed for inspect the water level in Klong Huaiba Klong Nong-Ngu-Loem . The monitoring results are presented in DCS screen. If the water level is close to 3.63 meters 5.63 meters msl. , the power plant must stop draining the cooling tower blow down. - The retention pond with 3 days-retaining of cooling tower was provided to collect the effluent, in case the water level of Klong Huaiba Klong Nong-Ngu-Loem is higher than 3.5 maters 5.5 meters msl . - The power plant controls the quality of cooling water and monitors the quality by providing the continuous effluent quality monitoring system and occasionally monitoring for monitor effluent quality to meet the effluent standard under the Order of the Royal Irrigation Department and the Notification of the Ministry of Industry, B.E.2560 2017 before draining into Klong Huaiba Klong Nong-Ngu-Loem . - The treated non-cooling water effluent is not draining to the outside but reused for watering plants in green area. - The septic tank was for treating effluent from office building prior collected in the effluent retention pond for watering plants. Forestry and Wildlife Ecology - The power plant prohibits the workers and personnel from hunting or trapping the wildlife in the power plant and reservoir areas by training and notification regulations/restriction according to EIA report for workers and employees. For the outside, the power plant has provided guards for surveyed the areas around the power plant regularly.

Aquatic Ecology and Fishery - The power plant prohibits the employees and workers of the power plant from fishing in Klong Huaiba Klong Nong-Ngu-Loem and Klong Rapeepatana by training and notification regulations/restriction for workers and employees. For the outside, the power plant has provided guards for surveillance of fishing in prohibited areas.

Water Usage -

- The power plant received the permission of water usage from Pa Sak Tai Water Transmission and Maintenance Project and strictly acts following the condition of pumping permission to prevent any impact on water use for irrigation, domestic consumption and industrial purpose. - The power plant was recorded the volume of water taken from Pa Sak Tai River everyday and reported to the related agencies every month. However, the intake water conformed to the requirement of permission letter to use water from Pa Sak Tai Water Transmission and Maintenance Project.

Transportation - The clearly the traffic routes was installed within the power plant area including the installation of warming signs and traffic signals and provided safety guard to control traffic thoroughly 24 hours. - The driving speed was limited not to exceed 20 kilometers per hour within the power plant area.

- TY:2432489.23 4

Drainage and Flood Control - The power plant has a plan to always maintain the condition of the storm water draining ditch to drain well on a monthly basis. By the way, if there are drainage the power plant will be dredging so that the storm water can be drained well. - The automatic water level monitoring system was installed for inspect the water level in Klong Huaiba Klong Nong-Ngu-Loem . The monitoring results are presented in DCS screen. If the water level in close to 3.63 meters 5.63 meters msl. , the power plant must stop discharge the cooling water blow down to Klong Huaiba Klong Nong-Ngu-Loem . - The storm water from the rainfalls over the power plant area during the rainy season was collected into storm water retention pond and diverted to the reservoir No.1 for uses in the dry season. Solid Wastes Management - A specific area was provided for appropriate collection and segregation of solid waste and appropriate containers were provided by color. - The power plant contracted the local agency Nong Kob SAO and an authorized waste disposal facilities for collecting and disposing and garbage. - Presently, the solid waste that was generated in the power plant i.e., Air filter, Cartridge filter, Dewater sludge, Wastewater from laboratory, Old wood pallet, Paper package, Insulation and Used oil. The power plant recorded the details of solid wastes that transported outside the power plant. Solid waste management of Nong Saeng Power Plant was conducted following the Notification of the Ministry of Industry on disposal of wastes or unusable materials, B.E.2548 2005 and the public Health Act, B.E.2535.

Occupational Health and Safety - The process equipments and machineries were inspected in order to keep them in good condition by maintenance section. - The silencer and enclosure was installed at the machines generating loud noise including to installed insulation and enclosures at the heat sources, i.e., stream turbine, etc. - The power plant provided training for employees on working procedures and action plan for safety of chemicals transporting, safety of chemicals storing, safety of chemicals using, fire prevention and fire fighting equipments using, operation in hazardous area personal protective equipments PPE using and safety inspection. - The power plant appointed the committee on safety, occupational health and working environment with responsibility for specifying safety, occupational health and working environment policy safety handbook for aforementioned plans to be used as reference plans of training on work safety for the power plant employees. - Personal protective equipments PPE such as ear muffs, ear plug, safety helmet, safety glasses, safety shoes, safety gloves, etc. - The various kind of firefighting equipment was provided in the power plant area, such as portable fire extinguisher, fire extinguisher or chemical and foam types. - Work permit system was provided. - The power plant provided training on first-aid treatment, emergency response drill, and an annual health examination for all of employee.

- TY:2432489.23 5

Socio-Economics - The power plant assigned guideline for environmental responsible with the SAO, i.e., authorizing the community relation officers to work with the locals agencies. The Community Participation Committee and subcommittee Environmental Auditing Committee were to be the function to audit the environment quality and directly report to the Community Participation Committee. - The power plant organized activities to promote and support career development for community such as organic agriculture, i.e., organic rice growing, animal husbandry etc. - Presently, the power plant conducted the activities including career supporting at sustainable economy leaning center, agricultural demonstration plot rice growing and already adjusted he area for agricultural demonstration plot. - The power plant organized suitable community supporting activities and attended community event since studies the project to present. - The power plant set up a coordination center to perform in case that people are troubled by the operation of the Nong Saeng Power Plant including to assign the clearly procedure, duration and responsibility personnel in order to response to complaints rapidly. - The Power plant conducted on socio-economic status and opinion of people. Community leaders and representative of the related governmental agencies by visit discussion and depth interview every 6 months. The opinion of communities within 5-km radius around Nong Saeng Power Plant was surveyed every year, using questionnaires. From results in the year 2017, 63.2% of interview thought project give more advantage than disadvantage. 36.8% of interview thought project give both advantage and disadvantage. The result showed that most believed in environmental management, and preventive measure of the power plant such as bring prosperity to the community project, e.g., development of public utility system. Public Relations and Public Participation - The power plant allowed the environment auditing committee to visit the implementation of the power plant since the construction phase to operation phase for community to ensure the implementation of the power plant.

- TY:2432489.23 6

2. Actions on Environmental Monitoring Programme (during January to June 2018)

AIR QUALITY (EMISSION GAS)

Monitoring station: (Please indicate the location of the monitoring stations as indicated in the EMP such as 4 HRSG stacks of Nong Saeng Power Plant)

The monitoring locations of stack emission are presented in Figure 1.

Monitoring Station No.1: HRSG 11 Stack

Measured Value at Referred Remarks

Item Unit 7%O2 Standards International (Frequency, Method, etc.) Mean Max Standards 1/ SO2 ppm 0.44 0.44 20 2,000 Analytical Method 1/ Oxides of ppm 42.64 42.64 120 - - SO2: Instrumental Nitrogen Reference Method/ Infrared (as nitrogen Detection dioxide) U.S. EPA Method 6C CO ppm 207.20 207.20 6902/ - - NO : Instrumental O % 14.60 14.60 - - x 2 Reference 3 1/ TSP mg/Nm 1.67 1.67 60 50 Method/Chemiluminescence Gas Flow Nm3/min 27,815 27,815 - - U.S. EPA Method 7E Rate - CO: Instrumental Reference Method/Non- Dispersive Infrared Detection U.S. EPA Method 10

- O2: Instrumental Reference Method/O2 Analyzer U.S. EPA Method 3A - TSP: Isokinetic Stack Sampling Technique/Pre- Post Weight Difference U.S. EPA Method 5 Frequency Twice a year Remark: 1. The monitoring of stack emission was conducted on June 26, 2018. 2. 1/Notification of the Ministry of Industry B.E.2547 . 2/Notification of the Ministry of Natural Resources and Environmental and Notification of the Ministry of Industry B.E.2549

- TY:2432489.23 7

Monitoring Station No.2: HRSG 12 Stack

Measured Value at Referred Remarks

Item Unit 7%O2 Standards International (Frequency, Method, etc.) Mean Max Standards 1/ SO2 ppm 0.57 0.57 20 2,000 Analytical Method 1/ Oxides of ppm 40.91 40.91 120 - - SO2: Instrumental Nitrogen Reference Method/ Infrared (as nitrogen Detection dioxide) 2/ U.S. EPA Method 6C CO ppm 5.52 5.52 690 - - NO : Instrumental O % 14.60 14.60 - - x 2 Reference 3 1/ TSP mg/Nm 1.72 60 50 Method/Chemiluminescence Gas Flow Nm3/min 28,606 28,606 - - U.S. EPA Method 7E Rate - CO: Instrumental Reference Method/Non- Dispersive Infrared Detection U.S. EPA Method 10

- O2: Instrumental Reference Method/O2 Analyzer U.S. EPA Method 3A - TSP: Isokinetic Stack Sampling Technique/Pre- Post Weight Difference U.S. EPA Method 5 Frequency Twice a year Remark: 1. The monitoring of stack emission was conducted on June 26, 2018.

1/Notification of the Ministry of Industry B.E.2547 . 2/Notification of the Ministry of Natural Resources and Environmental and Notification of the Ministry of Industry B.E.2549)

- TY:2432489.23 8

Monitoring Station No.3: HRSG 21 Stack

Measured Value at Referred Remarks

Item Unit 7%O2 Standards International (Frequency, Method, etc.) Mean Max Standards 1/ SO2 ppm 0.40 0.40 20 2,000 Analytical Method 1/ Oxides of ppm 47.18 47.18 120 - - SO2: Instrumental Nitrogen Reference Method/ Infrared (as nitrogen Detection dioxide) 2/ U.S. EPA Method 6C CO ppm 0.28 0.28 690 - - NO : Instrumental O % 13.60 13.60 - - x 2 Reference 3 1/ TSP mg/Nm 1.12 1.12 60 50 Method/Chemiluminescence Gas Flow Nm3/min 28,509 28,509 - - U.S. EPA Method 7E Rate - CO: Instrumental Reference Method/Non- Dispersive Infrared Detection U.S. EPA Method 10

- O2: Instrumental Reference

Method/O2 Analyzer U.S. EPA Method 3A - TSP: Isokinetic Stack Sampling Technique/Pre- Post Weight Difference U.S. EPA Method 5 Frequency Twice a year Remark: 1. The monitoring of stack emission was conducted on April 23, 2018.

1/Notification of the Ministry of Industry B.E.2547 . 2/Notification of the Ministry of Natural Resources and Environmental and Notification of the Ministry of Industry B.E.2549

- TY:2432489.23 9

Monitoring Station No.4: HRSG 22 Stack

Measured Value at Referred Remarks

Item Unit 7%O2 Standards International (Frequency, Method, etc.) Mean Max Standards 1/ SO2 ppm 0.17 0.17 20 2,000 Analytical Method 1/ Oxides of ppm 41.51 41.51 120 - - SO2: Instrumental Nitrogen Reference Method/ Infrared (as nitrogen Detection dioxide) 2/ U.S. EPA Method 6C CO ppm 0.63 0.63 690 - - NO : Instrumental O % 13.70 13.70 - - x 2 Reference 3 1/ TSP mg/Nm 1.04 1.04 60 50 Method/Chemiluminescence Gas Flow Nm3/min 27,526 27,526 - - U.S. EPA Method 7E Rate - CO: Instrumental Reference Method/Non- Dispersive Infrared Detection U.S. EPA Method 10

- O2: Instrumental Reference

Method/O2 Analyzer U.S. EPA Method 3A - TSP: Isokinetic Stack Sampling Technique/Pre- Post Weight Difference U.S. EPA Method 5 Frequency Twice a year Remark: 1. The monitoring of stack emission was conducted on April 23, 2018.

1/Notification of the Ministry of Industry B.E.2547 . 2/Notification of the Ministry of Natural Resources and Environmental and Notification of the Ministry of Industry B.E.2549

- TY:2432489.23 10

Locations HRSG 11

HRSG 12

HRSG 21

HRSG 22

Figure 1 Monitoring Location of Stack Emission Nong Saeng Power Plant, Gulf JP NS Co., Ltd.

- TY:2432489.23 11

AIR QUALITY (AMBIENT AIR QUALITY)

(Please indicate the location of the 4 monitoring stations/community areas as indicated in the EMP such as: (1) Ban Tamsinthusopa, (2) Ban Nong Lua, (3) Ban Nong-Ngu-Loem and (4) Ban Khok Daeng)

The monitoring locations of ambient air quality by using AAQMS are shown in Figure 2.

Monitoring Station No. 1: Ban Tamsinthusopa, Tambon Nong-Namsai, Pachee District of Pra Nakhon Si Ayutthaya. Item Unit Measured Measured Referred Remarks Value Value Standards International (Frequency, Method, etc.) (Mean) (Max.) Standards

SO2 The continuous ambient air ppm 0.002 0.025 0. - (average 1-hour) quality monitoring for 24 hours using AAQMS. SO2 ppm 0.001 0.011 0. 150 Analytical Method (average 24-hour) - TSP and PM-10 : Bata Ray or Taper Element NO Oscillating Microbalance 2 ppm 0.012 0.053 0. - (average 1-hour) - NO2 : Chemiluminescence Method TSP - SO2 : UV Fluorescence mg/m3 0.047 0.104 0. 0.230 (average 24-hour) Method/Pararosaniline - Wind speed and wind PM10 direction : Cup mg/m3 0.043 0.095 0. 0.150 (average 24-hour) Anemometer/Anodized Aluminum Vane/Ultrasonic Wind speed and Anemometer m/s 1.9 4.3 - - wind direction - Ambient Temperature : Temperature Sensor Ambient Frequency °C 28.7 31.5 - - 24 hours continuously Temperature

Remark : 1. The monitoring of ambient air quality during January to June 2018. Standard according to : 1/ Notification of the National Environment Board No.21 (B.E.2544). 2/ Notification of the National Environment Board No.24 (B.E.2547). 3/ Notification of the National Environment Board No.33 (B.E.2552).

- TY:2432489.23 12

AIR QUALITY (AMBIENT AIR QUALITY)

Monitoring Station No. 2: Ban Nong-Lua, Tambon Nong-Kob, Nong-Saeng District of Saraburi.

Item Unit Measured Measured Referred Remarks Value Value Standards International (Frequency, Method, etc.) (Mean) (Max.) Standards

SO2 The continuous ambient air ppm 0.003 0.027 0. - (average 1-hour) quality monitoring for 24 hours using AAQMS. SO2 ppm 0.002 0.006 0. 150 Analytical Method (average 24-hour) - TSP and PM-10 : Bata Ray or Taper Element Oscillating NO Microbalance 2 ppm 0.010 0.045 0. - (average 1-hour) - NO2 : Chemiluminescence Method TSP - SO2 : UV Fluorescence mg/m3 0.048 0.102 0. 0.230 (average 24-hour) Method/Pararosaniline - Wind speed and wind PM10 direction : Cup mg/m3 0.043 0.100 0. 0.150 (average 24-hour) Anemometer/Anodized Aluminum Vane/Ultrasonic Wind speed and Anemometer m/s 1.5 3.3 - - wind direction - Ambient Temperature : Temperature Sensor Ambient Frequency °C 28.2 31.0 - - 24 hours continuously Temperature

Remark : 1. The monitoring of ambient air quality during January to June 2018. Standard according to : 1/ Notification of the National Environment Board No.21 (B.E.2544). 2/ Notification of the National Environment Board No.24 (B.E.2547). 3/ Notification of the National Environment Board No.33 (B.E.2552).

- TY:2432489.23 13

AIR QUALITY (AMBIENT AIR QUALITY)

Monitoring Station No. 3: Ban Nong-Ngu-Loem, Tambon Khok Muang, Pachee District of Phra Nakhon Si Ayutthaya.

Item Unit Measured Measured Referred Remarks Value Value Standards International (Frequency, Method, etc.) (Mean) (Max.) Standards

SO2 The continuous ambient air ppm 0.002 0.022 0. - (average 1-hour) quality monitoring for 24 hours using AAQMS. SO2 ppm 0.002 0.006 0. 150 Analytical Method (average 24-hour) - TSP and PM-10 : Bata Ray or Taper Element Oscillating NO Microbalance 2 ppm 0.011 0.086 0. - (average 1-hour) - NO2 : Chemiluminescence Method TSP - SO2 : UV Fluorescence mg/m3 0.054 0.134 0. 0.230 (average 24-hour) Method/Pararosaniline - Wind speed and wind PM10 direction : Cup mg/m3 0.047 0.114 0.150 (average 24-hour) Anemometer/Anodized Aluminum Vane/Ultrasonic Wind speed and Anemometer m/s 1.3 2.8 - - wind direction - Ambient Temperature : Temperature Sensor Ambient Frequency °C 28.0 31.0 - - 24 hours continuously Temperature

Remark : 1. The monitoring of ambient air quality during January to June 2018. Standard according to : 1/ Notification of the National Environment Board No.21 (B.E.2544). 2/ Notification of the National Environment Board No.24 (B.E.2547). 3/ Notification of the National Environment Board No.33 (B.E.2552).

- TY:2432489.23 14

AIR QUALITY (AMBIENT AIR QUALITY)

Monitoring Station No. 4: Ban Khok Daeng, Tambon Khok-Toom, Nong-Saeng District of Saraburi.

Item Unit Measured Measured Referred Remarks Value Value Standards International (Frequency, Method, etc.) (Mean) (Max.) Standards

SO2 The continuous ambient air ppm 0.003 0.029 0. - (average 1-hour) quality monitoring for 24 hours using AAQMS. SO2 ppm 0.005 0.074 0. 150 Analytical Method (average 24-hour) - TSP and PM-10 : Bata Ray or Taper Element Oscillating NO Microbalance 2 ppm 0.009 0.044 0. - (average 1-hour) - NO2 : Chemiluminescence Method TSP - SO2 : UV Fluorescence mg/m3 0.051 0.118 0. 0.230 (average 24-hour) Method/Pararosaniline - Wind speed and wind PM10 direction : Cup mg/m3 0.040 0.107 0. 0.150 (average 24-hour) Anemometer/Anodized Aluminum Vane/Ultrasonic Wind speed and Anemometer m/s 1.1 3.1 - - wind direction - Ambient Temperature : Temperature Sensor Ambient Frequency °C 28.2 31.6 - - 24 hours continuously Temperature

Remark : 1. The monitoring of ambient air quality during January to June 2018. Standard according to: 1/ Notification of the National Environment Board No.21 (B.E.2544). 2/ Notification of the National Environment Board No.24 (B.E.2547). 3/ Notification of the National Environment Board No.33 (B.E.2552).

- TY:2432489.23 15

WATER QUALITY (EFFLUENT QUALITY) During Construction Stage Monitoring Station: Holding Pond of Nong Saeng Power Plant

Item Measured Measured Referred Remarks Value Value Standards International (Frequency, Method, (Mean) (Max) Standards etc.) Analytical Method Temperature 40 - Temperature : Certified Thermometer - pH : Electrometric Method BOD 20 - 5 - Total Dissolved Solids : Dried at 103-105 °C, COD 100 - 180 °C - Suspended Solids : Dried at SS 30 50 103-105 °C - BOD5 : 5-Day BOD Test/Azide Modification TDS 1,300 - Method - COD : Open Reflux, Oil & Grease 5 10 Titrimetric Method - Oil & Grease : Soxhlet Extraction Method/Partition pH 6.5-8.5 6-9 Gravimetric Method - TKN : Kjedahl Method TKN 35 - - Heavy metals : Atomic Absorption Spectrometric Method Free Chlorine 1 - - Fecal Coliform Bacteria : Multiple Tube Fermentation Technique Fecal Coliform Bacteria - - Frequency Once a month Remark : At present, the Nong Saeng Power Plant Project is being operation.

- TY:2432489.23 17

WATER QUALITY (EFFLUENT QUALITY)

During Operation Stage

Monitoring Station: Holding Pond of Nong Saeng Power Plant before Discharge

Note: Please include the online monitoring results in the report, kindly refer to the EMP.

Item Measured Measured Referred Remarks Value Value Standards1/ International (Frequency, Method, (Mean) (Max) Standards etc.) Temperature 31.6 32.8 Analytical Method

BOD5 2.7 3.6 - - Temperature: COD <40.00 <40.00 - Electrometric Method SS 8.5 10 50 - BOD5: 5-Day BOD TDS 979 1,044 - Test/Azide Modification Method Oil & Grease 0.5 10 - COD: Open Reflux, pH 7.32 6.5-8.5 6-9 Titrimetric Method TKN 1.3 1.6 - - Suspended solids: Dried Free Chlorine 0.03 0.04 - at 103-105 C, 180 C Heavy Metals - Total Dissolved solids: Fe 0.60 0.99 - - Dried at 103-105 C, 180 C Zn 0.16 0.20 1.0 - Oil & Grease: Soxhlet Cu < <0.04 0.5 Extraction Method/Partition Pb 0.023 - Gravimetric Method Ni <0.035 <0.06 - - pH: Electrometric Mn 0.18 0.18 - Method Cr+6 ND <0.01 ND <0.01 - - - TKN : Kjedahl Method - Free Chlorine: Argentometric Method - Heavy metals: Atomic Absorption Spectrometric Method Frequency Every 3 months Remark: 1. The monitoring of effluent quality during January to June 2018. Standard according to : 1/ Notification of the Royal Irrigation Department Order No.73/2554 (2011) dated April 1, B.E.2554 (2011).

- TY:2432489.23 18

WATER QUALITY EFFLUENT QUALITY

Monitoring Station: Online monitoring at the point to draining the effluent to Klong Huaiba Klong Nong- Ngu-Loem

Item Unit Measured Measured Referred Remarks Value Value Standards1/ International (Frequency, Method, (Mean) (Max) Standards etc.) Temperature C 29.50 34.00 Analytical Method pH - 7.19 8.50 6.5-8.5 6-9 - Temperature: Electrometric Method Conductivity µS/cm 1,214 1,404 2,000 - - pH: Electrometric Method - Conductivity: Electrometric Method Frequency 24 hours continuously Remark: 1. The monitoring of effluent quality during January to June 2018. 2. 1/Notification of the Royal irrigation Department No. 73/2554 2011 Note: For the effluent quality that shown the maximum value was not drained outside. If the trend of effluent quality exceeding the standard, the warning signal id show in DCS and the power plant stop draining the effluent from cooling holding pond. The water in holding pond will be circulated by recalculated system and the water draining from cooling blow down will be treated, the effluent will be drained outside when online monitoring showing the effluent quality to meet the effluent standard.

- TY:2432489.23 19

SURFACE WATER QUALITY

During Construction Stage

Monitoring Stations: Klong Huaiba (Klong Nong-Ngu-Loem) area covering three monitoring stations: (i) 500 meters upstream of Nong Saeng Power Plant Site, (ii) Discharge point of the project, (iii) 500 meters d

Item Unit Measured Measured Referred Remarks Value Value Standards International (Frequency, Method, (Mean) Max) Class 3 Class 4 Standards etc.) Analytical Method BOD5 mg/l - - 2.0 4.0 - - pH : Electrometric Method - Total Dissolved Solids : COD mg/l - - - - - Dried at 103-105 °C, 180 °C - Suspended Solids : Dried SS mg/l - - - - - at 103-105 °C - BOD5 : 5-Day BOD TDS mg/l - - - - - Test/Azide Modification Method - COD : Open Reflux, pH - - - 5.0-9.0 5.0-9.0 - Titrimetric Method - Fecal Coliform Bacteria : Multiple Tube Fecal MPN/100 ml - - 4,000 - - Fermentation Technique Coliform Frequency Every 3 months Remark: At present, the Nong Saeng Power Plant Project is being operation.

- TY:2432489.23 20

SURFACE WATER QUALITY

During Operation Stage

Monitoring Stations: Klong Huaiba (Klong Nong-Ngu-Loem) area covering three monitoring stations: (i) 500 meters upstream of Nong Saeng Power Plant Site, (ii) Discharge point of the project, (iii) 500 meters downstream of the

Klong Huaiba Klong Nong Ngu Loem 500 meters upstream of Nong Saeng Power Plant Site

Klong Huaiba Klong Nong Ngu Loem discharge point of the project

Klong Huaiba Klong Nong Ngu Loem 500 meters downstream of Nong Saeng Power Plant Site

- TY:2432489.23 21

SURFACE WATER QUALITY

Monitoring Station No.1 500 meters upstream of Nong Saeng Power Plant Site

Item Unit Measured Value Standards Referred Remarks Mean Max Class 3 Class 4 International (Frequency, Method, Standards etc.) Temperature C 31.65 32.8 - Analytical Method - Temperature: BOD5 mg/l 1.25 1.5 4.0 - COD mg/l <40.00 <40.00 - - - Electrometric Method - BOD5: 5-Day BOD SS mg/l 15 17 - - - Test/Azide TDS mg/l 154 167 - - - Modification Method pH mg/l 7.94 8.08 5.0-9.0 5.0-9.0 - - COD: Open Reflux, Free Chlorine mg/l ND <0.03 ND <0.03 - - - Titrimetric Method Heavy Metals - Suspended solids: Fe mg/l 0.51 0.81 - - - Dried at 103-105 C, Zn mg/l <0.04 <0.04 1.0 1.0 - 180 C +6 Cr mg/l ND <0 ND <0 0.05 0.05 - - Total Dissolved Pb mg/l 0.007 0.011 0.05 0.05 - solids: Dried at 103- Ni mg/l ND ND 0.1 0.1 - 105 C, 180 C <0.010 <0.010 - pH: Electrometric Mn mg/l 0.14 0.19 - Method Cu mg/l <0.04 <0.04 - - Free Chlorine: Argentometric Method - Heavy metals: Atomic Absorption Spectrometric Method Frequency Every 3 months Remark: 1. The monitoring of surface water quality was conducted on March 17, 2018 and May 19, 2018. 2. Standard according to Announcement of National Environment Board No.8 (B.E.2537) 3. The most quality of water in Klong Huaiba area: (i) 500 meters upstream of Nong Saeng Power Plant site was classified under the surface water quality for class 3 (agriculture). 4 C.

- TY:2432489.23 22

SURFACE WATER QUALITY

Monitoring Station No.2: Discharge point of the project

Item Unit Measured Value Referred Remarks Mean Max Class 3 Class 4 International (Frequency, Method, Standards etc.) Temperature C 31.6 32.7 - Analytical Method - Temperature: BOD5 mg/l 1.25 1.3 4.0 - COD mg/l <40.00 <40.00 - - - Electrometric Method - BOD5: 5-Day BOD SS mg/l 15.5 18 - - - Test/Azide TDS mg/l 190.5 205 - - - Modification Method pH mg/l 7.85 7.98 5.0-9.0 5.0-9.0 - - COD: Open Reflux, Free Chlorine mg/l ND(<0.03) ND(<0.03) - - - Titrimetric Method Heavy Metals - Suspended solids: Fe mg/l 0.40 0.54 - - - Dried at 103-105 C, Zn mg/l <0.023 <0.04 1.0 1.0 - 180 C +6 Cr mg/l ND <0.01 ND <0.01 0.05 0.05 - - Total Dissolved Pb mg/l ND ND 0.05 0.05 - solids: Dried at 103- <0.003 <0.003 105 C, 180 C Ni mg/l <0.035 <0.06 0.1 0.1 - - pH: Electrometric Mn mg/l 0.09 0.10 - Method Cu mg/l ND ND - - Free Chlorine: <0.005 <0.005 Argentometric Method - Heavy metals: Atomic Absorption Spectrometric Method Frequency Every 3 months Remark: 1. The monitoring of surface water quality was conducted on March 17, 2018 and May 19, 2018. 2. Standard according to Announcement of National Environment Board No.8 (B.E.2537) 3. The most quality of water in Klong Huaiba area: (ii) Discharge point of the project was classified under the surface water quality for class 3 (agriculture). C.

- TY:2432489.23 23

SURFACE WATER QUALITY

Monitoring Station No.3: 500 meters downstream of Nong Saeng Power Plant Site

Item Unit Measured Value Referred Remarks Mean Max Class 3 Class 4 International (Frequency, Method, Standards etc.) Temperature C 31.1 32.8 - Analytical Method - Temperature: BOD5 mg/l <1.0 <1.0 4.0 - COD mg/l <40.00 <40.00 - - - Electrometric Method - BOD5: 5-Day BOD SS mg/l 14.5 16 - - - Test/Azide TDS mg/l 184.5 201 - - - Modification Method pH mg/l 7.67 7.81 5.0-9.0 5.0-9.0 - - COD: Open Reflux, Free Chlorine mg/l ND(<0.03) ND(<0.03) - - - Titrimetric Method Heavy Metals - Suspended solids: Fe mg/l 0.38 0.42 - - - Dried at 103-105 C, Zn mg/l <0.04 <0.04 1.0 1.0 - 180 C +6 Cr mg/l ND <0.01 ND <0.01 0.05 0.05 - - Total Dissolved Pb mg/l 0.007 0.011 0.05 0.05 - solids: Dried at 103- Ni mg/l ND ND 0.1 0.1 - 105 C, 180 C <0.010 <0.010 - pH: Electrometric Mn mg/l 0.09 0.11 - Method Cu mg/l ND ND - - Free Chlorine: <0.005 <0.005 Argentometric Method - Heavy metals: Atomic Absorption Spectrometric Method Frequency Every 3 months Remark: 1. The monitoring of surface water quality was conducted on March 17, 2018 and May 19, 2018. 2. Standard according to Announcement of National Environment Board No.8 (B.E.2537) 3. The most quality of water in Klong Huaiba area: (iii) 500 meters downstream of Nong Saeng Power Plant site was classified under the surface water quality for class 3 (agriculture). C.

- TY:2432489.23 24

NOISE

During Operation Stage

Photographs of Measurement Locations of Sound Pressure Level Nong Saeng Power Plant Project (Construction Phase), Gulf JP NS Co., Ltd.

Locations Photographs Environment BAN TAMSINTHUSOPA The measurement location was installed (UTM : 0690902E, in Tamsinthusopa temple and open area. 1596841N) The activity in this area did not generate loud noise.

BAN NONG TANGBUN The measurement location was installed (UTM : 0691604E, in community and open area. The 1598237N) activity in this area did not generate loud noise.

BAN NONG NGU LOEM The measurement location was installed (UTM : 0690630E, in community and open area. The 1595689N) activity in this area did not generate loud noise.

BAN KHOK DAENG The measurement location was installed (UTM : 0692502E, in community and open area. The 1595440N) activity in this area did not generate loud noise.

- TY:2432489.23 25

Locations Photographs Environment THE FENCE OF THE The measurement location was installed PROJECT OR THE in nearby community and open area. NEAREST HOUSE TO The activity in this area did not generate THE PROJECT loud noise. (UTM : 0690909E, 1596932N)

A CHICKEN FARM The measurement location was installed WITHIN 1 KM RADIUS in community and open area. The FROM THE PROJECT activity in this area did not generate SITE loud noise. (UTM : 0690825E, 1596455N)

A CHICKEN FARM The measurement location was installed WITHIN 1 TO 2 KM in community near road and in open RADIUS FROM area. The activity in this area did not THE PROJECT SITE generate loud noise. (UTM : 06 E, 1595689N)

- TY:2432489.23 26

NOISE

During Construction Stage

Measurement Station 1: Ban Tamsinthusopa, Tambon Nong-Namsai, Pachee District of Pra Nakhon Si Ayutthaya

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

Measurement Station 2: Ban Nong-Tangbun, Tambon Nong-Kob, Nong-Saeng District of Saraburi

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

Measurement Station 3: Ban Nong-Ngu-Loem, Tambon Khok Muang, Pachee District of Phra Nakhon Si Ayutthaya

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

- TY:2432489.23 27

Measurement Station 4: Ban Khok Daeng, Tambon Khok-Toom, Nong-Saeng District of Saraburi

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

Measurement Station 5: The fence of the project or at the nearest house to the project

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

Measurement Station 6: A chicken farm within 1 km radius from the project site

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

- TY:2432489.23 28

Measurement Station 7: A chicken farm within 1 to 2 km radius from the project site

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level - - - 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level - - - 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days)

Remark: At present, the Nong Saeng Power Plant Project is being operation.

- TY:2432489.23 29

NOISE

During Operation Stage

Measurement Station 1: Ban Tamsinthusopa

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 58.1-61.2 62.2-63.6 48.8-50.2 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 55.3-56.6 62.2-63.6 48.8-50.2 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

Measurement Station 2: Ban Nong-Tangbun

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 49.9-51.9 51.0-54.0 43.7-45.2 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 42.5-46.7 51.0-54.0 43.7-45.2 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

- TY:2432489.23 30

Measurement Station 3: Ban Nong-Ngu-Loem

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 49.3-50.7 56.0-57.3 42.5-43.8 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 49.7-51.1 56.0-57.3 42.5-43.8 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

Measurement Station 4: Ban Khok Daeng

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 51.5-54.7 59.5-65.1 44.7-47.2 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 53.3-59.1 59.5-65.1 44.7-47.2 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/ The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

- TY:2432489.23 31

Measurement Station 5: The fence of the project or at the nearest house to the project

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 52.8-54.8 60.8-61.5 47.3-51.3 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 54.6-55.2 60.8-61.5 47.3-51.3 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

Measurement Station 6: A chicken farm within 1 km radius from the project site

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 51.9-53.4 57.5-60.9 47.6-49.4 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 50.3-52.1 57.5-60.9 47.6-49.4 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

- TY:2432489.23 32

Measurement Station 7: A chicken farm within 1 to 2 km radius from the project site.

Item Leq (24hr) Ldn L90 Referred Remarks Standard International (Frequency, Method, Standard etc.) Noise level 55.4-57.6 63.1-67.4 44.8-49.0 70 55 Measurement Method (Daytime) - Sound Pressure Level Meter Noise level 56.9-61.4 63.1-67.4 44.8-49.0 70 45 Frequency (Nighttime) - Twice a year for 5 consecutive days each (covering weekends and working days) Remark: 1/ The measurement of sound pressure levels was conducted during March 16-21, 2018. 2/The sound pressure level standard of 70 dB(A) notified by the Notification of the National Environment Board, No.15, B.E.2540 (1997) Standard of Ldn and L90 are not specified yet. No nearby communities were affected by the loud noise level during operation. Noise level daytime means the time-average A-weighted sound level, over 15 hours period 7:00 AM to 10:00 PM Noise level nighttime means the time-average A-weighted sound level, over 8 hours period 10:00 PM to 7:00 AM

- TY:2432489.23 33

FORESTRY AND WILDLIFE ECOLOGY

During Construction Stage

Wildlife

Parameter: Survey of wildlife around the project area including species, status and abundance.

Location: Within a radius of 5 km around the project site.

Duration: Six months from the beginning of the construction.

The measure specifies the survey of wildlife be conducted around the project area for species, status and abundance in the area within 5 km radius of the project site one time after the project construction for 6 months.

During Operation Stage

Parameter: Survey of wildlife around the project area for the study of their diversity, species, abundance and all survival in the project area.

Location: Within a radius of 5 km around the project site.

Duration: At the beginning of the project operation and every 3 years thereafter with a survey in each of the rainy and winter seasons of the year and for a total time period of 10 years. If the findings do not indicate any tendency of the project-induced impact, the survey will be determined.

Nong Saeng Power Plant conducted a survey on forestry and wildlife ecology on October 26 and 31, 2017 and December 9-10, 2017. The results show that the habitat of wildlife and ecology of the area were changed very slightly. No impact was imposed on the local wildlife resources and the associated diversity, abundance and status of wildlife in the power plant area.

- TY:2432489.23 34

AQUATIC ECOLOGY AND FISHERY

During Construction Stage

Aquatic Ecology

Parameter: Phytoplankton, zooplankton, benthos

Location: Klong Huaiba (Klong Nong-Ngu-Loem); (i) 500 meters upstream of Nong Saeng Power Plant Project Site; (ii) Discharge point of the project and (iii) 500 meters downstream of

Duration: Every three months throughout the construction period.

Sampling Method: - Phytoplankton: Vertical plankton tows with plankton net mesh size 20-60 µm.

- Zooplankton: Vertical plankton tow with plankton net mesh size 100-200 µm for zooplankton and mesh size 300 µm for fish eggs and larvae.

- Benthos: Ekman Grab used to collect samples from the bottom layer of sediment.

The programme of aquatic ecology monitoring specified that the types and densities of phytoplankton, zooplankton and benthos be monitored every 3 months during construction phase in the area of Klong Huaiba (Klong Nong-Ngu-Loem) at 3 locations, i.e., 500 meters upstream of Nong Saeng Power Plant Project Site, discharge point.

- TY:2432489.23 35

During Operation Stage Parameter: Phytoplankton, zooplankton, benthos

Location: Klong Huaiba (Klong Nong-Ngu-Loem); (i) 500 meters upstream of Nong Saeng Power Plant Project; (ii) Discharge point of the project and (iii) 500 meters downstream of the

Duration: Every 6 months.

Sampling Method: - Phytoplankton: Vertical plankton tows with plankton net mesh size 20-60 µm.

- Zooplankton : Vertical plankton tow with plankton net mesh size 100-200 µm for zooplankton and mesh size 300 µm for fish eggs and larvae.

- Benthos: Ekman Grab used to collect samples from the bottom layer of sediment.

Monitoring Results (March 17, 2018) (1) Klong Huaiba at 500 meters upstream of Nong-Saeng Power Plant Project Site - Phytoplankton: 23 species in 3 Divisions of phytoplankton were found, i.e., 3 species in Cyanophyta, 16 species in Chlorophyta and 4 species in Chromophyta with the total density of 174,250 cell/l. The predominant species was found to be Pandorina sp. and the diversity index of phytoplankton was 1.8222. - Zooplankton: 3 species in Phylum Protozoa and 1 species in Phylum Rotifera with the total density of 1,750 ind./litre. The predominant species was found to be Trichocerca sp. and the diversity index of zooplankton was 1.2770. - Benthos : Not found (2) Klong Huaiba (Klong Nong-Ngu-Loem) at Discharge Point of the Project - Phytoplankton: 28 species in 3 Divisions of phytoplankton were found, i.e., 4 species in Cyanophyta, 15 species in Chlorophyta and 9 species in Chromophyta with the total density of 168,750 cell/l. The predominant species was found to be Micractinium sp. and the diversity index of phytoplankton was 1.9120. - Zooplankton: 2 species in Phylum Rotifera and 1 species in Phylum Arthropoda with the total density of 2,500 ind./litre and the diversity index of zooplankton was 1.8344. - Benthos: Not found

- TY:2432489.23 36

(3) Klong Huaiba (Klong Nong-Ngu-Loem) at 500 meters downstream discharge point - Phytoplankton: 20 species in 3 Divisions of phytoplankton were found, i.e., 2 species in Cyanophyta, 11 species in Chlorophyta and 7 species in Chromophyta with the total density of 67,400 cell/l. The predominant species was found to be Pandorina sp. and the diversity index of phytoplankton was 2.0419. - Zooplankton: 1 species in Phylum Protozoa and 2 species in Phylum Rotifera with the total density of 1,750 ind./litre and the diversity index of zooplankton was 1.0790. - Benthos: Not found Summary of Monitoring Results of Aquatic Ecology Klong Huaiba - Phytoplankton: The monitoring results revealed that Divisions mostly found in all 3 monitoring areas were Division Cyanophyta (blue green algae), Division Chlorophyta (green algae) and Division Chromophyta (chromista algae). The predominant species was found to be Pandorina sp. These Divisions are generally found in surface water resources or freshwater. The diversity index indicating the variety of lives was found to be close to or more than 1 implied that the environmental conditions and surface water quality were not imposed by any impacts. The results of diversity index on March 17, 2018 were found to be more than 1, so the surface water quality was considered to be good. - Zooplankton: The monitoring results revealed that the phylum found in the monitoring areas were Phylum Protozoa, Phylum Rotifera and Phylum Arthropoda. The results of diversity index on March 17, 2018 were found to be more than 1, so the surface water quality was considered to be good. - Benthos: Not found The species, density and diversity of phytoplankton, zooplankton and benthos are changed by seasonal changing. The comparative results of aquatic ecology during the year 2016 to 2018 are shown in Appendix 1.

- TY:2432489.23 37

Species and Density of Phytoplankton on March 17, 2018

Quantity Total (Cell/litre) (Cell/litre)

Station No.1 sp. Lyngbya sp. Oscillatoria sp. Chlorophyta Actinastrum sp. Closterium sp. Coelastrum sp. Crucigenia sp. Dictyosphaerium sp. Euglena sp. Gloeocystis sp. ,000 Micractinium sp. 40,000 Oocystis sp. 250 Pandorina sp. 72,000 Pediastrum sp. 5,250 Phacus sp. 250 Scenedesmus sp. 1,000 Staurastrum sp. 500 Strombomonas sp. 250 Trachelomonas sp. 500 Aulacoseira sp.

Cyclotella sp. 750 Fragilaria sp. 1,250 Synedra sp. 750 Station No.2 Lyngbya sp. Oscillatoria sp. Rephidiopsis sp. Spirulina sp. 250

Actinastrum sp. Closterium sp. Coelastrum sp. Cosmarium sp. Dictyosphaerium sp. 27,500 Euqlena sp. 1,500 Micractinium sp. 72,500 Oocystis sp. 500 Pandorina sp. 28,000

- TY:2432489.23 38

Species and Density of Phytoplankton on March 17, 2018 (Cont' d)

Total Quantity

(Cell/litre) (Cell/litre)

Station No.2 Pediastrum sp. Cont' d Phacus sp. Scenedesmus sp. Staurastrum sp. Strombomonas sp. Trachelomonas sp. Aulacoseira sp. 15,000 Ceratium sp. 250 Cyclotella sp. 500 Diatoma sp. 500 Fragilaria sp. 750 Gyrosigma sp. 750 Peridinium sp. 1,500 Surirella sp. 1,500 Synedra sp. 2,000 Station No.3 Lyngbya sp. 1,000 Oscillatoria sp. 250 Closterium sp. Coelastrum sp. Crucigenia sp. Euglena sp. 1,250 Micractinium sp. 6,000 Pandorina sp. 24,000 Pediastrum sp. 2,250 Phacus sp. 750 Staurastrum sp. 500 Strombomonas sp. 500 Thachelomonas sp. 1,750 Chromophyta Aulacoseira sp. Cyclotella sp. Diatoma sp. Fragilaria sp. Peridinium sp. Surirella sp. 450 Synedra sp. 450

- TY:2432489.23 39

Remark Station No.1 : Klong Huaiba (Klong Nong-Ngu-Loem) at 500 meters upstream of Nong Saeng Power Plant Project Station No.2 : Klong Huaiba (Klong Nong-Ngu-Loem) at Discharge point of the project Station No.3 : Klong Huaiba (Klong Nong-Ngu-

- TY:2432489.23 40

Species and Density of Zooplankton on March 17, 2018 Quantity Total Diversity Station Phylum Genus (individual/ (individual/ Index litre) litre) Station No.1 Eutintinnus sp. 250 Spirostomum sp. 250 Tintinnopsis sp. 500 Rotifera Trichocerca sp. 750

Station No.2 Arcella sp. 250 2,500 1.8344 Coleps sp. 250 Spirostomum sp. 250 Vorticella sp. 250 Brachionus sp. 500 Trichocerca sp. 750 Copepod nauplii 250 Station No.3 Protozoa Difflugia sp. 750 1,750 1.0790

Rotifera Polyarthra sp. 500 Trichocerca sp. 500

Remark Station No.1 : Klong Huaiba (Klong Nong-Ngu-Loem) at 500 meters upstream of Nong Saeng Power Plant Project Station No.2 : Klong Huaiba (Klong Nong-Ngu-Loem) at Discharge point of the project Station No.3 : Klong Huaiba (Klong Nong-Ngu-

Species and Density of Benthos on March 17, 2018

(individual/m2) (individual/m2) No. No. No.

Remark Station No.1 : Klong Huaiba (Klong Nong-Ngu-Loem) at 500 meters upstream of Nong Saeng Power Plant Project Station No.2 : Klong Huaiba (Klong Nong-Ngu-Loem) at Discharge point of the project Station No.3 : Klong Huaiba (Klong Nong-Ngu-Loem) at 500 meters

- TY:2432489.23 41

SOLID WASTES MANAGEMENT

During Construction Stage

Parameter: Types/quantities of solid wastes and the disposal method for each type of solid wastes.

Location: Project area.

Duration: Once a month during the construction period.

- TY:2432489.23 42

During Operation Stage

Parameter: Types/quantities of solid wastes and the disposal method for each type of solid wastes.

Location: Project area.

Duration: Once a month during the operation period.

Type of solid wastes generated from Nong Saeng Power Plant during January to June 2018 included Dewater sludge, Wastewater from laboratory, Water filter, Air filter, Insulation, Oil/chemical contaminate material and Used oil. In addition, the power plant recorded the details of solid wastes that were transported outside the project. Letter of permission for sending wastes outside the power plant and example of solid wastes manifest are presented in Appendix 2. Solid wastes management of Nong Saeng Power Plant Project was conducted following the Notification of the Ministry of Industry on disposal of wastes or unusable materials, B.E. 2548 (2005) and the Public Health Act, B.E. 2535.

Month Waste type Waste name Unit Volume Waste Disposal Non-Hazardous Dewater sludge Ton 156.285 Ayotaya Recycle 2002 Co.,Ltd. January Hazardous Wastewater from lab. Ton 8.000 Better World Green Co.,Ltd. Non-Hazardous Dewater sludge Ton 162.285 Ayotaya Recycle 2002 Co.,Ltd. February Hazardous Wastewater from lab. Ton 6.810 Better World Green Co.,Ltd. Non-Hazardous Dewater sludge Ton 122.550 Ayotaya Recycle 2002 Co.,Ltd. Hazardous Wastewater from lab. Ton 7.000 Better World Green Co.,Ltd. March Non-Hazardous Water Filter Ton 0.545 Better World Green Co.,Ltd. Non-Hazardous Air Filter Ton 0.545 Better World Green Co.,Ltd. Hazardous Wastewater from lab. Ton 8.000 Better World Green Co.,Ltd. April Non-Hazardous Dewater sludge Ton 82.930 Ayotaya Recycle 2002 Co.,Ltd. Non-Hazardous Air Filter Ton 12.300 Better World Green Co.,Ltd. Non-Hazardous Dewater sludge Ton 54.530 Ayotaya Recycle 2002 Co.,Ltd. May Hazardous Insulation Ton 2.000 Better World Green Co.,Ltd. Oil/chemical contaminate Hazardous Ton 1.500 Better World Green Co.,Ltd. material Non-Hazardous Dewater sludge Ton 40.030 Ayotaya Recycle 2002 Co.,Ltd. Hazardous Wastewater from lab. Ton 8.000 Better World Green Co.,Ltd. Oil/chemical contaminate Hazardous Ton 0.800 Better World Green Co.,Ltd. June material Hazardous Used oil Ton 9.200 Better World Green Co.,Ltd Hazardous Insulation Ton 0.310 Better World Green Co.,Ltd.

- TY:2432489.23 43

WATER USAGE

The water volume being pumped from Pa Sak River was daily recorded by Nong Saeng Power Plant Project of Gulf JP NS Co., Ltd. and reported to the permit agencies every month. However, the quantity of intake water was in accordance with the requirement of permission letter to use water from Pa Sak Tai Water Transmission and Maintenance Project.

DRAINAGE AND FLOOD CONTROL

The drainage ditch was constructed along the outer edge of the earth dike to prevent sediments from being leached from the construction area and to let the storm water in areas outside the project boundary to flow and drain freely without being blocked.

Three permanent storm water retention ponds were constructed within the power plant area. They were used to collect storm water in the construction area before draining to the outside.

- TY:2432489.23 44

OCCUPATIONAL HEALTH AND SAFETY

Operation Phase Parameter Location/Person Duration Measured Value Standard Remarks Min Max Noise Dose Employees working in the 4 times a year 50.5 85 1/ Measurement process of the power plant Sound TWA-8-hr method: levels meter Unit: dB A Noise Contour The electricity generating Every 5 years 37.0 84.6 85.0 Measurement area of loud noise level Sound (Result in method: levels meter year 2014) Unit: dB A Heat-Wet Bulb Globe Temperature heat sources , such as: (i) 4 times a year. 26.5 31.5 34 2/ Measurement (WBGT) condenser exhaust unit, (ii) method: Area steam pipeline area, (iii) Heat Stress generator area, and (iv) Monitor combustion turbine area. Unit: C Light Intensity Electrical and Control 4 times a year. 78 1,656 - Measurement Building 400-500 3/ method: Digital Administration Building Light Meter Workshop Unit: Lux Health examination for New Before working within the There were 3 new Employees of Nong-Saeng Power specified period by the employees. The physical Plant: (i) General Physical law. examination results were Examination, (ii) Lung X-rays and (iii) found to be normal. Basic blood test. Health examination for Employees of employees Once per year The power plant provided Nong-Saeng Power Plant: (i) lung x- both general and special rays, (ii) vision test, (iii) general physical examination for physical examination and blood test. : employees by Paolo complete blood cell, blood group and Rangsit Hospital on Hepatitis B immunity. October 3, 2017. In the year 2018, the power plant planed to conduct in August 2018. Special examination: (i) hearing test for employees Once per year The physical examination mechanical workers, (ii) lung function results were found to be test for maintenance workers and (iii) normal. vision test for every employee. Fire Prevention and Fire Fighting The safety, occupational Every month The safety, occupational System health and working health and working environment section environment section will have a meeting in provided monthly meeting order to summarize the in order to summarize the problems, problems, recommendations, recommendations, and and revise the safety revise the safety manual manual and emergency and emergency plan by plan by recording the recording the details, details, statistics, and statistics and comments comments from the from the employees and employees and local fire local fire fighting fighting authority on the authority on the safety safety and occupational and occupational health health of the project. of the project.

- TY:2432489.23 45

Operation Phase (Cont'd)

Measured Value Parameter Location/Person Duration Standard Remarks Min Max Fire Prevention and Fire Fighting Inspection of fire Every week Fire protection equipment System (Cont'd) protection equipments, such as fire water pump at least once a week. are inspected every week. Evaluation of the Every year Emergency preparedness emergency response was provided and drill in order to revise emergency response drill the emergency plan and will be conducted in practice skills. November 2018.

Remark : Country' s Standard according to : 1/ Notification of the Department of Labour Protection and Welfare B.E.2561 (2018) (Noise Dose Standard). 2/ Notification of the Ministry of Industry B.E.2546 (2003) and the Ministry of Labour B.E.2559 (2016). 3/ Notification of the Department of Labour Protection and Welfare B.E.2561 (2018) (Lighting Intensity Standard).

- TY:2432489.23 46

COMMUNITY HEALTH AND SAFETY

Construction Phase

Number of health safety and environment training and other training/orientation conducted for the workers/laborers, and general description of awareness.

- Safety handbook for construction was provided to new workers/employees.

Attendees Course Trainer Male Female Total

Total

Various accidents/incidents involving workers/labourer (including clinic/hospital reports, nature of accidents/incidents), action undertaken to ensure accidents/incidents to be avoided.

Various project related accidents/incidents affecting local communities (which may arise from traffic, dust, noise, vibration, or interaction with laborers), action undertaken to ensure accidents/incidents to be avoided.

- No accident/incident/injury affecting local communities. At present, the project has assigned personnel with responsibility to conduct surveillance and oversee the Proje

Operation Phase

Various project related accidents/incidents or health problems affecting local communities (which may arise from activities during operation phase imposing impacts on environmental quality such as air and water quality which may affect the community), action undertaken to address the issue. No accident/incident/injury affecting local communities. At present, the power plant has assigned environment Appendix 3.

- TY:2432489.23 47

SOCIO-ECONOMICS

1. Socio-economic survey and opinion

Implementation Parameter Location Duration/Frequency Methodology Phase Construction and Socio-economic survey Communities in the Every 6-months Visiting, talking, Operation and opinion of people, vicinity area of the talking and interviewing with community leaders and Nong-Saeng Power interviewing with community leaders representatives of Plant community leaders and representatives of concerned agencies on concerned agencies the timeliness and Representative of One time-survey by Survey by effectiveness of the concerned agencies questionnaires questionnaires environmental and social mitigative measures and the social programs being implemented by the Company.

The environmental measures specifies a survey be conducted on socio-economic status and opinion of households, community leaders in areas around the site of Nong Saeng Power Plant and representatives of the related governmental agencies. The survey shall be conducted by visiting as well as discussion, and in- depth interviews with community leaders every 6 months, and using the questionnaires once. For the results of visits, discussions and interviews with community leaders and representatives of related government agencies, it was found that the Project arranged several meetings of Nong Saeng Power Plant Environmental Auditing Committee, a body of representatives from the public sector appointed by the Community Participation Committee to take up duties on auditing the power plant performance and recommending performance approaches for the power plant. During January to June 2018, the Nong Saeng Power Plant Environmental Auditing Committee convened totally 6 meetings (Appendix 4). The survey on socio-economics was conducted by status and opinion of people once a year. Community leaders and representatives of the occupation groups were conducted by visit discussion an depth interview every 6 months. On June 22, 2018, the survey on socio-economic was conducted by visit discussion an depth interviews with community leader and representatives of the occupational groups i.e., mushroom farmer, rice farmer, meat-chicken farmer and other agriculture groups around the power plant. The results showed that most believed in environmental management and preventive measures of the power plant such as bring prosperity to the community, improving the education of the community, including supporting the funding from the power plant. The opinion of communities within 5-km radius around Nong Saeng Power Plant was surveyed during November 6 to December 14, 2017, using questionnaires. From results, 63.2% of interview thought project give more advantage than disadvantage. 36.8% of interview thought project give both advantage and disadvantage. In the year 2018, the survey on socio-economic will be conducted in August 2018.

- TY:2432489.23 48

3. Grievance Registry

During January to June 2018, not have complaint in this period.

Relevant Implementation Parties likely to Nature of Responses/Actions Further actions party Phase/Date facilitate Grievance from the Company needed to settle expressing received grievance grievance and grievance resolution relevant timeline ------

Note: Grievance Registry report to be included in the project report is submitted to JBIC-biannually during construction, and annually during operation stage.

The project has set up a community coordination center since the pre-construction period (in February 2011). The center is located in Moo 3 (Village 3), Nong-Namsai Sub-district, Pachee District, Phra Nakhon Si Ayutthaya Province. In addition, the project also used its temporary site office as a public relations and coordination unit.

The preventive and corrective plan for complaints is shown in Figure 3. The project has a complain form in use, which provides spaces for filling recommendations and details of complains.

- TY:2432489.23 49

Figure 3 Complaint Filling/Receiving Procedural Steps

- TY:2432489.23 50

4. Corporate Social Responsibility Programs (CSR Programs)

Reporting of monthly CSR activities and beneficiaries Month Activity Target area Target group Approximate Remarks cost Support the training Nong Hua Po 20,000 Budget Supporting and study project of Sub-district January People, Nong Hua Po Sub-district 2018 Government Administration Organization Support for public projects Saraburi By the February Nong Saeng People, Nong Khok Sub-district 3 Budget Supporting 2018 District Government Administration Organization Community Participation People around Committee Meeting of the kilometers People 120,000 Budget Supporting Nong Saeng Power Plant radius of GNS No.1 2018 Organizing meeting for People around environmental verify kilometers People 35,000 Budget Supporting committee No.1/2018 radius of GNS The project to study the Nong Nam Sai People, village headman Nong Nam Sub-district 20,000 Budget Supporting Government Sai Support of Nong Saeng March Nong Saeng People, Mango project 20,000 Budget Supporting 2018 District Government Annual of 2018 Supporting training program Budget Supporting Nong Saeng People, for village headman Phon 20,000 District Government Tong Sub-district Support activities of public Phachi public health health volunteers Phachi 5,000 Budget Supporting District volunteers District Sub-district Support activities Volunteer Administration Voluntee, Sub-district Administration 20,000 Budget Supporting Organization People Organization Kok Muang Kok Muang Joining and supporting the Nong Lua 1 budget to organize the merit Moo, Nong Kob center and sub district, People, leaders 450,000 Budget Supporting April Song Kran day festival. Nong Saeng 2018 district, Saraburi province Support volunteer projects, Nong Kob sub People, leaders 20,000 Budget Supporting Nong Kob sub-district district To support the group visit of the Irrigation Water Regional People, 20,000 Budget Supporting Management, Paio-Sao Hai Irrigation Office Government Canal Community Participation May People around Committee Meeting of the 2018 kilometers People 100,000 Budget Supporting Nong Saeng Power Plant radius of GNS No.2 2018 Organizing meeting for People around environmental verify kilometers People 35,000 Budget Supporting committee No.2/2018 radius of GNS June Support for dredging Nong Kob Government 5 Budget Supporting 2018 projects, Huai Ba Canal sub-district

- TY:2432489.23 51

The project conducted the public relations work during the pre-construction period and during construction period, including the following details:

to be disseminated to the locals in 12 Tambons of Nong Saeng District and Nong Khae District in Saraburi Province and Pachee District in Phra Nakhon Si Ayutthaya Province. Promote by cable TV.

Friday during 10.00-12.00 a.m. PR pamphlets s, location as well as the environmental mitigative measures. Public relations via the meetings of the two sets of the Community Participation Committee and Environmental Auditing Committee to make representatives of the locals, who were also committee members, acknowledge the data relating to the project implementation. Signs posted in front of the project site: the project put up 2 signs to show the project highlights.

5. Report on the purchase of property at the entrance of the power plant complex

The Gulf Holding Co., Ltd. has purchased property at the entrance of the power plant. GNS planned to use such land for the buffer zone and Green Area. GNS bought the land in total 625 Rais. The prices that GNS offered to all land owners were higher than the land valuation cost (market price).

SOCIAL PROTECTION

1. General discussion on compliance with applicable Thai labor regulations and ADB Protection Strategy which requires compliance with core labor standards. The Company, its contractors and subcontractors are covered by and will comply with Thai labor regulations which has provisions that are consistent with core labor standards. The core labor standards are the elimination of all forms of forced or compulsory labor; the abolition of child labor; elimination of discrimination in respect of employment and occupation; and freedom of association and the effective recognition of the right to collective bargaining, as per the relevant conventions of the International Labor Organization.

1.1 The

1.2 The project has provided adequate personal protective equipment (PPE).

1.3 Employment of labor force: the Company has opened for job applications from 18-year-old (absolutely) persons, by respecting human rights and not employing illegal labor according to the law.

1.4 Foreign labor employment: the Company has contacted the labor through an import labor company(s) to prepare the foreign labor.

- TY:2432489.23 52

2. Statistics of workers/labourers, including Company (PGS), contractors and subcontractors office workers during the reporting period during January to June 2018

Total Number Information and Daily/Weekly Wage Type of Company of Staff/Workers for each type of Staff/Worker Staff/Worker Male Female Male Female GNS Staff 5 1 Management Agreement Contract (Monthly) - - Technician 50 6 Staff Contractor - - Management 16 18 Technician - - Staff 16 44 Worker 320 Bath/day Subcontractor - - Management Agreement Contract (Monthly) 50 - Technician - - Staff 200 10 Worker 320 Bath/day

3. Information on whether any of the staff, workers or labourers have expressed interest to form a workers association, trade union or any form of organized groups to discuss workers rights, compensation and benefits or any issue related to their well-being.

- Provisions are made according to the laws, including social security, compensation fund, labor protection welfares. For workers association, trade union or any form of organized group depend on main sub contactor (Sino Thai Policy).

4. Report on Power Development Fund (PDF)

PGS to ensure copy of Annual PDF Report is shared with ADB. The ADB recognizes that the Company has no direct hand in the implementation, use, and selection of projects to be funded under the fund. Annual report is expected to be shared with ADB throughout the project operation stage.

Gulf JP NS Co., Ltd. has transferred 19,136,291.06 Baht January to June 2018 to the fund

For fiscal year 2018, the ERC approved budget of about 78.08 million Baht for the fund, compromising the administrative costs of about 10.54 million Baht and the community projects implement costs of about 67.53 million Baht.

Progress on the community projects implementation of fiscal year 2018 : according to Office of GNS Power Development Fund proposed 198 community projects as follows: 103 projects: prepared contracts/agreement, disbursed money for the projects implementation 51 projects: on progress 44 projects : not yet been implemented - projects: cancelled projects

The most of proposed community projects category are Community projects, Community Sports, Community Scholarship Program for Children Youth and students Local students, Community mango festival's B.E.2561 Annual Nongsaeng district, Saraburi Province, Community walking, running, cycling, athletics, Nong Kob district.

- TY:2432489.23 53

5. Lawsuits Situation Monitoring Item Current Status and likely Outcomes of Ongoing Lawsuits Lawsuit to nullify the EIA A plaint was filed against the government authorities by the protesters to the approval Central Administrative Court on September 21, 2010, claiming for the revocation

protesters also filed a request for a temporary injunction for suspending any activities performed in the project area. GNS was summoned by the Court as the defendant. On March 4, 2011, the Court dismissed a request for a temporary injunction. GNS has completely submitted the testimonies as required by the s and the Court issued an order for cessation of fact finding procedure on October 13, 2011. On January 31, 2013, the Court dismissed the case based on the ground that considerations made by the governmental agencies were legitimate under existing laws and regulations.

with the Supreme Administrative Court on March 1, 2013. GNS then filed an answer to such appeal on June 13, 2013. Currently, the case is under consideration by the Supreme Administrative Court.

- TY:2432489.23 54