geo-hg13-0003

MF03-HGT 1 of 5

PROJECT: MANOLO FORTICH 1&2 HEP FILE NO.:

LOCATION: Bukidnon Province REVISION:

CAPACITY: PREPARED BY:

GENERATION: DATE PREPARED:

MF1 Powerhouse 3 2

Weir 1 (Tanaon) 4 2

Weir 2 (Guihian) 3 2

Weir 3 (Upper Amusig) 3 2

Desander 1 (Tanaon) 1 2

Desander 2 (Guihian) 2 2

Desander 3 (Upper Amusig) 2 2

Surgetank (Lower Amusig) 2 2

Headpond (Guihian) 4 2

MF2 Powerhouse 5 2

Weir (Lower Amusig) 3 2

Surgetank (Dalirig) 1 2

Manolo Fortich 1 (MF1) HEP

Manolo Fortich 2 (MF2) HEP

Figure 1. Manolo Fortich 1&2 HEP Scheme

Name and Location Borehole Test Trial Pit Test

MF2 scheme, on the other hand, has only one weir which will be situated at Lower Amusig. Its powerhouse will be located at Dalirig. The

5600 meters long tunnel line will pass through an outcrop of predominantly Sandstone and Limestone. The team will be requiring at

least nine (9) borehole tests and six (6) test pits for sampling and testing.

GEOTECHNICAL TESTING PLANPreliminary

MF03-HGT

00

GEO TEAM - InvestigationMW

GW-hr

Based from the site inspection last November 20 to December 5, 2012 conducted by Project Technical Support Team, there is a need to

conduct a soil investigation and geo-mechanics testing on the proposed location of structures to verify the calculation of the Soil Bearing

Capacity, Settlement, to re-evaluate the Slope Stability Analysis and to conduct Geophysical Survey. To validate the soil parameters it is

recommended to extract samples required for geo-mechanics testing by conducting Boreholes and Test Pits on/near the proposed

structures. Below is the summary of the require geotechnical testing for feasibility study.

I. Test Location

18-Jan-13

MF 1:

MF 2:

Table 1. Required Geotechnical Test and Sampling

Structure No. of Test Required

MF1 project has three (3) weirs located at Tanaon, Guihian and Upper Amusig. Its powerhouse is to be located at Lower Amusig. The

water will be conveyed through ridges of the area using steel pipes. The outcrop for these locations is predominantly metamorphic rock

called quartz SCHIST. For these structures the team requires a total of 24 borehole tests and 18 trial pits. This will aid in identifying

bedrock level, discover weak or soft layers within the zone of interest and estimating the stiffness of the material.

T-ECD-EXP-PS-HGT

Revision no. 00

Effectivity date: July, 2012

MF03-HGT 2 of 5


A. Trial Pits

Surgetank (Dalirig) TP-24 N 8 24' 59.4"

Lower slope E 124 55' 23.3"

Surgetank (Dalirig) TP-23 N 8 25' 00.2"

Upper slope E 124 55' 23.6"

Weir (Lower Amusig) TP-22 N 8 25' 51.6"

Left side facing downstream E 124 58' 49.5"

Weir (Lower Amusig) TP-21 N 8 25' 53.2"

Right side facing downstream E 124 58' 51.0"

MF1 Powerhouse TP-20 N 8 24' 59.8"

Structure location upper slope E 124 55' 22.3"


Structure location E 124 55' 21.7"

MF2 Structure Reference Trial Pit No. Test Location

Desander 1 (Tanaon) TP-10 N 8 27' 44.3"

Upper slope downstream E 125 02' 09.3"

Desander 2 (Guihian)

E 125 01' 18.1"

Desander 3 (Upper Amusig)

Weir 3 (Upper Amusig)

TP-11 N 8 24' 47.6"

Upper slope upstream E 125 01' 17.6"

MF1 Structure Reference Trial Pit No. Test Location

Desander 2 (Guihian) TP-12 N 8 24' 47"6

Upper slope upstream





Weir 1 (Tanaon) TP-3 N 8 27' 40.6"


Weir 1 (Tanaon) TP-4 N 8 27' 40.5"

Left side facing downstream E 125 02" 06.8"

Weir 2 (Guihian) TP-5 N 8 24' 48.0"


Weir 2 (Guihian) TP-6 N 8 24' 46.9"


Weir 3 (Upper Amusig) TP-7 N 8 27' 19.7"


E 124 59' 58.6"

Desander 1 (Tanaon) TP-9 N 8 27' 45.5"


TP-8 N 8 27' 19.8"

Left side facing downstream

TP-13 N 8 24' 46.9"


Desander 3 (Upper Amusig) TP-14 N 8 24' 46.8"


Surgetank (Lower Amusig) TP-15 N 8 25' 34.5"


Surgetank (Lower Amusig) TP-16 N 8 25' 34.6"


Headpond (Guihian) TP-17 N 8 25' 35.3"


NOTE: Detailed Topographic survey is requested in the slope of the proposed test location for "In-house Slope Stability Analysis". The

Geo Team is capable of conducting the trial pit testing to determine the Unconfined Compressive Strength, Cohesion, Moisture

Content and Unit Weight. Trial pit can be terminated once a bedrock formation is encountered.

The following are the marked location of the Geotechnical Investigation. Test location may vary depending on the final scheme to be

provided by the Design Team.

Headpond (Guihian) TP-18 N 8 25' 35.3"


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MF03-HGT 3 of 5


B. Boreholes

MF1 Powerhouse BH-28 N 824'58.1"

Structure location E 12455'16.6"





MF2 Structure Reference Borehole Identification No. Test Location


Upper slope E 12455'16.3"






Weir 1 (Tanaon) BH-4 N 8 27' 44.2"

Right side lower slope E 125 02' 05.7"

Weir 1 (Tanaon) BH-5 N 8 27' 44.7"

Right side upper slope E 125 02' 10.4"

Weir 2 (Guihian) BH-8 N 824'48.3"

Left side facing downstream E 12501'19.4"


Right side facing dowstream E 12501'18.3"

Weir 3 (Upper Amusig) BH-11 N 824'59.3"

Left side facing downstream E 12455'16.3"



Desander 1 (Tanaon) BH-14 N 8 27' 46.1"


Desander 2 (Guihian) BH-15 N 824'49.1"


Desander 2 (Guihian) BH-16 N 824'52.0"


Desander 3 (Upper Amusig) BH-17 N 8 27' 23.1"

Upper lower upstream E 125 00' 01.3"

Desander 3 (Upper Amusig) BH-18 N 8 27' 24.7"


Surgetank (Lower Amusig) BH-19 N 825'10"

Structure location E 12455'22"

Surgetank (Lower Amusig) BH-20 N 825'49"

Structure location E 12459'17"

Headpond (Guihian) BH-21 N 825'35.3"






Weir 1 (Tanaon) BH-6 N 8 27' 41.2"

Left side lower slope E 124 02' 05.0"

Weir 1 (Tanaon) BH-7 N 8 27' 38.7"

Left side upper slope E 125 02' 09.8"






Lower slope E 12459'58.6"


Lower slope E 12459'58.9"

T-ECD-EXP-PS-HGT

Revision no. 00


MF03-HGT 4 of 5


A. Manolo Fortich 1 (MF1) HEP

A.2 Eighteen (18) Trial Pits at 3m depth

A.2.1 Field Work

A.2.2 Laboratory Tests

3. Test Pit Sampling - AASHTO Manual of Subsurface Investigation

1. Moisture Content - ASTM D2216 (for every meter)

2. Particle Size Distribution - ASTM D422 (for every meter)

3. Atterberg Limits - ASTM D4318 (for every meter)

1. Mobilization / Demobilization

2. Provision of health, safety, security, sanitation, water, power, brushing at site

including transport needs and all incidental necessities.


4. Vertical onshore drilling through soft soil (N50) ASTM D1586-08a

6. Standard Penetration Test and Split-Barrel Sampling of Soil - ASTM D1586-

08a

7. Sampling Shipping and Handling (SPT Boxes, Shelby Tube Boxes, Core Boxes)

samples 54

samples 54

samples 54

samples 54

lm 54

ls. 1

ls. 1

204

tp 18

samples 72

ls. 1

ls. 1

bh 24

DESCRIPTION

1. Mobilization / Demobilization



3. Hole to Hole transfer set-up

A.1 Twenty-four (24) Boreholes at 20m depth

A.1.1 Field Work

A. Geotechnical Investigation

NOTE: Geophysical survey is required for all the boreholes to determine if a karstic feature is present within the foundation zone of

influence.

8. Geophysical Survey

1. Moisture Content - ASTM D2216 (for every SPT Sample)

2. Particle Size Distribution - ASTM D422 (for every SPT Sample)

lm 72

II. Proposed Geotechnical Scope of Works

1

samples 72

3. Atterberg Limits - ASTM D4318 (for every SPT Sample)

4. Unified Soil Classification System (USCS) - ASTM D2487 (for every Particle

Size Distribution Sample)

The following are the proposed scope of works for our "Request for Quotation of Geotechnical Engineering Site Investigation".

5. Unconfined Compressive Strength of Intact core specimen - ASTM D2938 (at

every 2m interval)

samples 72

samples 72

ls. 1

Surgetank (Dalirig) BH-33 N 8 25' 00.1"


ls. 1

ls.

UNIT EST. QTY

lm 408

lm 72

samples



5. Direct Shear Test- ASTM D3080 (for every trial pit bottom) samples 18

B. Test Reports, Geotechnical Evaluation and Recommendation ls. 1


Right side facing dowstream E 124 58' 49.6"

Weir (Lower Amusig) N 8 25' 52.0"

BH-30

BH-31


Weir (Lower Amusig) N 8 25' 53.3"

Weir (Lower Amusig) BH-32 N 8 25' 52.6"


T-ECD-EXP-PS-HGT

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MF03-HGT 5 of 5


B. Manolo Fortich 2 (MF2) HEP

QUALITY INFORMATION

Prepared By: Checked by: Approved by:

DESCRIPTION UNIT EST. QTY

A. Geotechnical Investigation

Comment

Date

Engineer I Senior Engineer I Project Investigation Manager

Carine D. Capsula Allan K. Vargas Victor N. Pelera

A.1 Nine (9) Boreholes at 20m depth bh 9

A.1.1 Field Work

1. Mobilization / Demobilization ls. 1



ls. 1

3. Hole to Hole transfer set-up ls. 1

4. Vertical onshore drilling through soft soil (N50) ASTM D1586-08a lm 153

6. Standard Penetration Test and Split-Barrel Sampling of Soil - ASTM D1586-

08a

lm 27

1. Moisture Content - ASTM D2216 (for every SPT Sample) samples 27


7. Sampling Shipping and Handling (SPT Boxes, Shelby Tube Boxes, Core Boxes) ls. 1

2. Particle Size Distribution - ASTM D422 (for every SPT Sample) samples 27

3. Atterberg Limits - ASTM D4318 (for every SPT Sample) samples 27



samples 27

5. Unconfined Compressive Strength of Intact core specimen - ASTM D2938 (at

every 2m interval)

samples 77

A.2 Six (6) Trial Pits at 3m depth

A.2.1 Field Work tp 6

1. Mobilization / Demobilization ls. 1



ls. 1

3. Test Pit Sampling - AASHTO Manual of Subsurface Investigation lm 18


1. Moisture Content - ASTM D2216 (for every meter) samples 18

2. Particle Size Distribution - ASTM D422 (for every meter) samples 18

3. Atterberg Limits - ASTM D4318 (for every meter) samples 18

18

5. Direct Shear Test- ASTM D3080 (for every trial pit bottom) samples 6

B. Test Reports, Geotechnical Evaluation and Recommendation ls. 1



samples

T-ECD-EXP-PS-HGT

Revision no. 00


geo-hg13-0003

Documents

lower slope e

weir lower amusig tp

upper slope downstream

upper slope upstream

guihian tp

tanaon tp

surgetank lower amusig

structure location e