Environmental Monitoring Report This report has been submitted to ADB by the Borrower and is made publicly available in accordance with ADB’s public communications policy (2005). It does not necessarily reflect the views of ADB. Project Number: LN2612/EI7303 July to Sept 2013 PHI: Visayas Base-load Power Development Project Prepared by KEPCO SPC Power Corporation Cebu City, Philippines
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Environmental Monitoring Report
This report has been submitted to ADB by the Borrower and is made publicly available in accordance with ADB’s public communications policy (2005). It does not necessarily reflect the views of ADB.
Project Number: LN2612/EI7303 July to Sept 2013
PHI: Visayas Base-load Power Development Project
Prepared by
KEPCO SPC Power Corporation
Cebu City, Philippines
2 x 100 MW CEBU POWER PLANT
2013.10.15
Environmental Monitoring Results (Jul-Sep. 2013)
ii
Table of Contents
Page
I. General Information 1
II. Introduction and Plant Operation Status 1
III. Results of Environmental Monitoring 2
3.1 RA 8749: Air Environment
3.1.1 Ambient Air Quality Monitoring 2
3.1.2 Manual Ambient Air & Noise Monitoring 9
3.1.3 Air Emissions 11
3.2 RA 9275: Water Environment
3.2.1 Ground Water 16
3.2.2 Marine Water 17
3.2.3 Water Effluents 18
3.2.4 Thermal Discharge 19
3.3 RA 6969: Controlled Chemicals & Hazardous Waste
26 1.200 SE 0.00520 0.014 51.400 -0.00008 0.700 ESE 0.00403 0.027 47.900 0.00128 24hrs
27 1.200 ESE 0.00495 0.038 46.500 0.00055 0.800 SE 0.00218 0.018 47.200 0.00142 24hrs
28 0.900 SE 0.00256 0.018 46.500 0.00140 0.900 E 0.00106 0.019 49.200 0.00133 24hrs
29 0.900 SE 0.00181 0.025 46.600 0.00118 1.300 SE 0.00252 0.038 50.400 0.00135 24hrs
30 1.200 ESE 0.00493 0.030 47.100 -0.00102 0.700 SE 0.00537 0.025 46.600 0.00134 24hrs
31 1.200 SE 0.00208 0.038 47.600 -0.00120 0.500 ESE 0.00283 0.030 47.100 0.00132 24hrs A
Interim Target 1-0.443ppm; Interim Target 2 - 0.0177 ppm; Guideline Value - 0.0071 ppm (Interim Targets are provided in recognition of the need for a staged approach to achieving the recommended guidelines) (Averaging Time: 24 hrs) B
1-hour averaging period os recommended in the WHO Ambient Air Quality Guidelines as well as in the US National Ambient Air Quality Standards (NAAQS) C Interim Target 1-0.1500 ppm; Interim Target 2-0.1000 ppm; Interim Target 3-0.0750 ppm; Guideline Value-0.0500 ppm (Averaging Time 24hrs)
D Daytime Target (9am-6pm) - 75 dB; Morning (5am-9am) and Evening (6pm-10pm) Target - 70dB; Nightime Target (10pm-5am) - 65dB
E Daytime and nighttime standards in industrial and commercial areas
BLDL - Below the Lowest Detectable Level; NR - No reading; NA - Not Applicable
4
Table 4. AAQMS Results (August 2013)
Monthly Ambient Air Quality Monitoring Report (August '13)
Date
Station 1 Station 2
Averaging
Time
Item
Wind Speed Wind Direction NO2 PM 10 NOISE SO2 Wind Speed Wind Direction NO2 PM 10 NOISE SO2
m/s - PPM mg/m3 dB PPM m/s - PPM mg/m3 dB PPM
DENR STD NA NA 0.080 0.150 75.000D 0.070 NA NA 0.080 0.150 75.000
D 0.070 NA
WORLD BANK STD NA NA 0.0987B 0.150
C 70.000
E 0.0443
A NA NA 0.0987
B 0.150
C 70.000
E 0.0443
A NA
Min 0.400 NA 0.002 0.008 46.900 -0.004 0.800 NA 0.001 0.018 47.700 0.001 24hrs
Max 1.500 NA 0.007 0.032 59.400 0.000 3.300 NA 0.007 0.098 66.325 0.002 24hrs
Average 1.016 NA 0.004 0.021 51.145 -0.002 2.045 NA 0.003 0.037 53.805 0.002 month
1 1.200 ESE 0.00313 0.014 56.700 -0.00118 1.700 E 0.00276 0.027 59.877 0.00132 24hrs
2 0.900 SE 0.00650 0.023 59.400 -0.00094 2.300 E 0.00379 0.023 58.953 0.00136 24hrs
31 1.500 WNW 0.00532 0.031 51.700 -0.00212 1.500 E 0.00343 0.085 49.700 0.00194 - A
Interim Target 1-0.443ppm; Interim Target 2 - 0.0177 ppm; Guideline Value - 0.0071 ppm (Interim Targets are provided in recognition of the need for a staged approach to achieving the recommended guidelines) (Averaging Time: 24 hrs) B
1-hour averaging period os recommended in the WHO Ambient Air Quality Guidelines as well as in the US National Ambient Air Quality Standards (NAAQS) C Interim Target 1-0.1500 ppm; Interim Target 2-0.1000 ppm; Interim Target 3-0.0750 ppm; Guideline Value-0.0500 ppm (Averaging Time 24hrs)
D Daytime Target (9am-6pm) - 75 dB; Morning (5am-9am) and Evening (6pm-10pm) Target - 70dB; Nightime Target (10pm-5am) - 65dB
E Daytime and nighttime standards in industrial and commercial areas
BLDL - Below the Lowest Detectable Level; NR - No reading; NA - Not Applicable
5
Table 5. AAQMS Results (September 2013)
Monthly Ambient Air Quality Monitoring Report (September '13)
Date
Station 1 Station 2
Averaging
Time
Item
Wind Speed Wind Direction NO2 PM 10 NOISE SO2 Wind Speed Wind Direction NO2 PM 10 NOISE SO2
m/s - PPM mg/m3 dB PPM m/s - PPM mg/m3 dB PPM
DENR STD NA NA 0.080 0.150 75.000D 0.070 NA NA 0.080 0.150 75.000
D 0.070 NA
WORLD BANK STD NA NA 0.0987B 0.150
C 70.000
E 0.0443
A NA NA 0.0987
B 0.150
C 70.000
E 0.0443
A NA
Min 0.900 NA 0.002 0.006 40.366 -0.002 0.400 NA 0.001 0.007 45.700 0.001 24hrs
Max 1.800 NA 0.008 0.092 52.400 -0.001 2.400 NA 0.005 0.052 48.900 0.025 24hrs
Average 1.103 NA 0.004 0.027 47.068 -0.002 1.410 NA 0.003 0.024 47.595 0.003 month
30 0.900 W 0.00379 0.092 51.200 -0.00108 1.600 SE 0.00270 0.015 47.650 0.00171 24hrs A
Interim Target 1-0.443ppm; Interim Target 2 - 0.0177 ppm; Guideline Value - 0.0071 ppm (Interim Targets are provided in recognition of the need for a staged approach to achieving the recommended guidelines) (Averaging Time: 24 hrs) B
1-hour averaging period os recommended in the WHO Ambient Air Quality Guidelines as well as in the US National Ambient Air Quality Standards (NAAQS) C Interim Target 1-0.1500 ppm; Interim Target 2-0.1000 ppm; Interim Target 3-0.0750 ppm; Guideline Value-0.0500 ppm (Averaging Time 24hrs)
D Daytime Target (9am-6pm) - 75 dB; Morning (5am-9am) and Evening (6pm-10pm) Target - 70dB; Nightime Target (10pm-5am) - 65dB
E
Daytime and nighttime standards in industrial and commercial areas
BLDL - Below the Lowest Detectable Level; NR - No reading; NA - Not Applicable
FIGURE 1. AAQMS Station 1 location and Win
6
Station 1
Aliganga’s Residence
(Jul. – Sep. 2013)
SPC POWER PLANT
COMPLEX
KSP
Wind Rose
KSPC CEBU POWER PLANT
FIGURE 2. AAQMS Station 2 location and W
SPC POWER P
COMPLEX
7
d Wind Rose
ER PLANT
PLEX
Station 2
Berdan’s Open Ground
(Jul. - Sep. 2013)
KSPC CEBU POWER PLANT
FIGURE 3.
FIGURE
8
E 3. SO2 and NO2 Values at AAQMS 1&2
URE 4. PM-10 Values at AAQMS 1&2
3.1.2. Manual Ambient Air and N
Ambient air monitoring results at
DENR and World Bank standar
measured for dust content in am
plant are coal dust and ash parti
compared to the standards. Tabl
Sampling location maps are prov
graphs from the construction peri
3.1.3. Air Emissions
As one of its environmental featu
System (CEMS) for each Unit. T
analyzers are functioning well. Pa
Oxide emissions (SOx), Nitrogen O
corrected at 6% O2, indicate that
These favorable results show tha
and 8 summarize the daily results
the trending graphs of the results
no reading for all parameters
maintenance, while Unit 2 CEMS
to gas analyzer IR source malfun
replacement and target date of co
FIG
9
nd Noise Monitoring
ts at the four stations indicated in Table 2 have not exceeded
dards, all parameters are compliant. For this period, t
ambient air is PM-10 since the potential dusts generated
articles. Based on the data, the ambient air quality on dus
Table 6 summarizes the data for the 1-hour sampling in the
provided in Attachment 1 while the manual ambient air q
period up to the present are provided in Attachment 2.
eatures, the power plant has a real-time Continuous Emissio
t. These CEMS Units are subjected for yearly RATA to co
Parameters for testing include the Total Suspended Particl
en Oxide emissions (NOx), and the Carbon Monoxide emissio
hat emission levels are well within the national and World B
that the emissions control of the power plant is highly effi
sults from July to September 2013 of both units while Figure
sults in comparison to the standards. As seen in Table 7, Un
ers from September 21-30, since unit is on shutdown
MS has no reading for SOx, NOx and CO from August 3-Sep
function. Maintenance department have already ordere
of completion of repairs is by first week of October.
FIGURE 5. Noise Values at AAQMS 1&2
eded the reference
d, the parameter
from the power
dust is acceptable
the third quarter.
ir quality trending
issions Monitoring
confirm that the
rticles (TSP), Sulfur
ission (CO). Results,
ld Bank standards.
efficient. Tables 7
gures 6 to 7 shows
7, Unit 1 CEMS has
wn for scheduled
September 30 due
dered spare IR for
10
Table 6. AMBIENT AIR QUALITY (1-Hour Grab-Testing, 2013 September)
Station/Location
PARAMETERS
Observations during sampling PM-10,
µg/Ncm
SO2,
µg/Ncm
NO2,
µg/Ncm
Noise,
dB
CO,
ppm
Station 3 Brgy. Tangke, Basketball
Court
29 <7 2 71 0
� Time: (09/11/13)/ 02:31-03:31PM
� Wind Direction: NE to SW
� Sampler is inside the basketball court approximately 300m from
KSPC; 5 men playing basketball. Raining at time of sampling.
Source of noise on-going water drilling.
Station 4 Along National Road cor.,
Alinganga St., Near Perimeter Fence
of SPC Power Corp.
53 <7 12 68 0
� Time: (09/11/13)/ 01:25-02:25PM
� Wind Direction: NE to SW
� Approximately 150m from KSPC; near National Road (busy
street); The area is partly dusty due to a number of vehicles
passing; 20 motorcycles, 3 tricycles, 13 private vehicles and 14
bicycles with side cars.
Station 5 Near Pier Area inside the
power plant site
36 <7 3 67 0
� Time: (09/11/13)/ 09:30-10:30AM
� Wind Direction: NE to SW
� Sampling location is near the pier area fence; at close proximity
from conveyor and plant boilers. The ambient set-up is in a
grassy area.
Station 6 In front of Mangkikis
Chapel, Sitio Mangkikis
15 <7 38 69 0
� Time: (09/11/13)/ 04:00-05:00PM
� Wind Direction: NE to SW
� Sampling area is near residences; open area; the place/spot has
many trees and plants; few private vehicles pass in the area
Minimum Detection Limit 1 0.01 0.01 --- 0
DENR Standard (DAO 14, 1-hr) 200 340 260 75
(NPCC - D) 30
World Bank Standard (IFC, 1-hr) ---A 212
B 200
C 70 35
B
A Internationally-accepted standards use an averaging time of 24-hours
B US-EPA National Ambient Air Quality Standards (NAAQS)
C WHO Ambient Air Quality Guidelines
11
Table 7. Unit 1 CEMS Results (Jul-Sep 2013)
Quarterly Air Emission Report (Q3, Unit 1) (- indicates unit shutdown)
TSP (DENR-EMB: 150 mg/Nm3, World Bank: 50 mg/Nm
3) NOx (DENR-EMB: 487 ppm, World Bank : 252 ppm) CO (DENR-EMB: 400 mg/Nm3) SO2 (DENR-EMB: 245 ppm, World Bank: 319 ppm)
DATE JULY AUGUST SEPTEMBER JULY AUGUST SEPTEMBER JULY AUGUST SEPTEMBER JULY AUGUST SEPTEMBER
ASTN 1 - Front of City Hall Plaza, STN 2 - Front of KSPC Site, STN 3 - Front of Barangay North Poblacion, STN 4 - Front of Colon Elementary School (Lower Kayam), STN 5 - Front of Tuyan Elementary School
(Barangay Tuyan) BDAO 90-34 Revised Water Usage and Classification/Water Quality Criteria
GNot more than 30 mg/L increase of the baseline value:
CMinimum Standard STN 1 baseline - 7 mg/L
DValue in parentheses indicates a maximum standard STN 2 baseline - 442 mg/L
EDoes not apply if natural background is higher in concentration STN 3 baseline - 13 mg/L
FStill within the natural background values STN 4 baseline - 22 mg/L
STN 5 baseline - 15 mg/L
18
Table 11. Water Effluents Monitoring Results
Water Effluents Monitoring (3rd Party Conducted by Fast Laboratories Inc.)
Parameters Cooling Water Effluent Stormdrain 1A (near LCF) Stormdrain 2
A where treated effluent from the sanitary treatment system is discharged together with rain water and backwash seawater; samples are collected from a catch basin.
B DAO 90-35 Revised Effluent Regulations of 1990
G No in-house laboratory testing was made due to the unavailability of the instrument to be used for testing.
H No in-house laboratory testing was made since all oily wastewater is treated in the plant's wastewater treatment facility.
I High TSS may be due to accumulated silt in the discharge tunnel. There are no solid additives added to the cooling water.
J No 3rd party analysis done.
19
Table 12. Seawater Temperature Data (September 11, 2013)
Points Time Sampling Location
(Temp. in °C)
Baseline Point
(Temp. in °C)
Temperature
Increase (°C) Residual Chlorine
Plant Load
(% Capacity)
M1 10:37 AM
05:24 PM
30.80
30.30 - - -
Unit 1-100%,
Unit 2-100%
M2 10:38 AM
05:25 PM
30.80
30.30
30.80
30.30
0.0
0.0 0.01
Unit 1-100%,
Unit 2-100%
M3 10:39 AM
05:26 PM
30.80
30.60
30.80
30.30
0.0
0.30 0.01
Unit 1-100%,
Unit 2-100%
M4 10:40 AM
05:27 PM
30.80
30.60
30.80
30.30
0.0
0.30 0.01
Unit 1-100%,
Unit 2-100%
M5 10:41 AM
05:28 PM
30.90
30.50
30.80
30.30
0.10
0.20 0.01
Unit 1-100%,
Unit 2-100%
DENR Standard Temp. Inc. in °C (DAO 90-35) 3.0
World Bank Standard (IFC) Based on the EIA of the project (DENR Standard)
FIGURE 8. High Tide Sea Water Temperature Testing Points
100-m radius
Current direction is SW.
M1 (Ambient Temp.)
M2
M3
M4
M5
Discharge Point
20
3.3. RA 6969: CONTROLLED CHEMICALS & HAZARDOUS WASTE
3.3.1 CCO Report
The plant is using mercury substances in the laboratory for the analysis of water effluents and water to be
used in the boiler. Table 13 shows the summary of chemical purchases within the period from Jul-Sep 13.
Table13: Summary of Chemical Purchases and Usage
No. Chemical
Name Trade Name CAS No.
Balance
from
Previous
Report
Quantity
Purchased Supplier
Quantity
Used
Remaining
Quantity
1 Mercuric
Sulfate
Mercuric
Sulfate 7439-97-6 250 g
No purchased within the
reporting period 100 g 150 g
2 Mercuric (II)
Thiocyanate
Mercuric (II)
Thiocyanate 7439-97-6 - 100 g
Yana
Chemodities 0.30 g 99.70 g
3.3.2 Hazardous Waste
Hazardous waste in the plant site includes waste oils, busted fluorescent lamps, and contaminated
containers. Within the coverage period, no wastes were disposed. These are currently stored in the
designated storage areas in the site. Contaminated containers were also cleaned and re-used as trash cans
and containers of prepared chemicals. As soon as these wastes are ready for disposal to DENR-accredited
treaters, KSPC will accordingly inform DENR-EMB through this report. Generated industrial wastewater is
being treated in the centralized wastewater treatment facility. Water produced are being reused for dust
suppression and firefighting. Mixed chemical wastes with mercury are placed in a tightly closed bottle which
is stored in the laboratory area for future treatment. Table 14 below shows the summary of generated and
stored hazardous wastes within the reporting period.
Table 14: Summary of Hazardous Waste Generated/Treated
HW No. HW Class HW
Nature
HW
Cataloguing
Remaining HW from
Previous Report HW Generated
Quantity Unit Quantity Unit
Waste Water Other Alkali Wastes Liquid C399 --- --- 20,920 m3
Used Oil Waste Oil Liquid I101 11,100 L 1,200 L
Contaminated
Container
Containers previously
containing oil
Solid
(Plastic) J201
20.75 kg --- kg
Containers previously
containing toxic
chemicals
2 drums
(200L) 5
drums
(200L)
24 carboys
(20L) -
carboys
(20L)
51 pcs
(250mL-2L) 10
pcs (250mL-
2L)
Solid
(Glass) 63
pcs
(250mL-2L) 9
pcs (250mL-
2L)
Busted Lamps
Mercury and Mercury
Compounds
Solid
D407
60 kg --- kg
Mixed Chemical
Wastes with
Mercury
Liquid 1000 mL 500 mL
21
3.3.3 Naalad Riprapping Update
Currently, the project status is still in the acquisition of permits and licenses phase, particularly
that from DPWH. The overall project consists of the following activities:
1. Excavation and dredging
2. Rip rapping
3. Opening of new river route
4. Backfilling
Backfilling of excavated earth material shall be the last phase of the project. Ash shall not be used
as backfilling material and shall not be disturbed from its current state right now. Figure 9 below
shows the existing and planned rerouting and riprapping, while Figure 10-11 shows the site
condition and the works started for the rerouting.
Original ash landfill area
New river route
To be backfilled with
earth material
New riprap area
FIGURE 9. Naalad River Rerouting Plan
22
3.4. RA 9003: SOLID WASTE
Solid wastes in the power plant are categorized as domestic/office and industrial. For the coverage period, a
total of 11,735 kg of domestic/office solid wastes were disposed of or collected by the Naga City LGU.
Industrial solid wastes in the power plant are either coal ash or sludge. Sludge from the wastewater
treatment plant was tested using the Toxicity Characteristic Leaching Procedure (TCLP) to determine
whether it is hazardous or not. Previous results indicate that these are within the limits for industrial waste.
Because of its very low generation rate (below 50 MT/year), KSPC will be disposing and mixing its sludge
with the coal at very low percentages depending on the production rate.
The power plant’s coal ash (fly ash; bed ash will be tested in the next quarter) was also tested using TCLP
and results also classified it as solid industrial waste (See Attachment 3). All the coal ash generated was
recycled by CEMEX (APO Cement) in their cement manufacturing business. Ash generation and disposal
activities for this period are more stable due to the very low ash quality of the coal fired compared to the
previous period. Table 15 summarizes the industrial and solid waste quantities generated and the respective
disposal methods.
FIGURE 10. Site Status
FIGURE 11. Site Status
23
Table 15. Summary of Industrial and Solid Waste Generation and Disposal