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PORT TECHNOLOGY CONSTRUCTION CONSULTING AND COMMERICAL JSC Page 1 CONTENT 1 Introduction .... PORT TECHNOLOGY CONSTRUCTION CONSULTING AND COMMERICAL JSC Page 2 Appendices... PORT TEC

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PORT TECHNOLOGY CONSTRUCTION CONSULTING AND COMMERICAL ( JSC)

Page 1 CONTENT 1 Introduction 3

1.1 General 3

1.2 Legal basic 4

1.3 Scope of work 4

1.4 Location of survey area 5

1.5 Study scope and Standard system application 5

2 Quantity of geotechnical investigation 6

3 Equipments 6

4 Survey method 7

4.1 Exploration Drilling process and Sampling 7

5 Laboratory Test 7

6 Daily report and Photographs 8

6.1 Daily report 8

6.2 Photographs 8

7 Geotechnical characteristics of the project area 8

7.1 Geological feature of area 8

7.2 Tectonics and Earthquake 11

7.3 Hydrogeological condition 11

7.4 Strata main of the investigation area 12

8 Conclusions and recommendations 13

8.1 Conclusions 13

8.2 Recommendations 14

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Appendices

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1 Introduction

1.1 General

- Looking for a quarry site available producing suitable rock materials used for VPR Bai Goc seaport Project at Dong Hoa District – Phu yen province, survey construction will provided to proved rock for the project area as preliminary estimate quatity and volume of rock Engineering geologycal investigation consists of drilling, sampling, laboratory testing

- The contract has sighed 25/07/2014 by Technology construction consulting and commercial with Vung ro petroleum liability limited co

- The geological survey work in situ has started September, 30th 2014 and completely October, 15th 2004

Map of locaiton survey of the project area

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1.2 Legal basic

 Construction Law No 16/2003 QH11 by Social Republic of Viet Nam’s national Assembly at the 4th meeting on construction, tenure XI on 26th November 2013

 Decree No 209/2004/NĐ – CP by Government dated 16th December 2004, stipulating the management of construction quality

 Decree No 12/2009/ NĐ – CP dated February 10, 2009 by Government

 Decree No 12/2006/CT – BXD dated November 11, 2006 by Government

 Circular No 12/2005/TT – BXD dated July 15, 2005 by Ministry of Construction Instruction for some contents of construction project management and ability terms of individuals and organizations of construction activity

 Circular No 49/2008/NĐ – CP dated April 18, 2008 for modification, supplementary of Decree number, 209/2004/NĐ – CP dated September 16, 2004 stipulating the management of construction quality

 Survey Task and Survey Execution Plan Which were approved by PORT TECHNOLOGY CONSTRUCTION CONSULTING AND COMMERICAL (JSC)

 The geotechnical investigation for the project was carried out based on the following document:

 Economic contract on soil investigation for Looking for a quarry site available producing suitable rock materials used for VPR Bai Goc seaport project

1.3 Scope of work

The geological survey work aims to supply information about geotechnical condition

of the mining material area, defines boundary of layer, Soil sampling and Rock sampling

in order to determine physical – mechanical The depth of borings and the type of samples to be taken at each hole will be as directed by the Client

The finish depths of the borings are shown in the table quantily (table 2) The actual depth of each borehole will depending on actual thickness and conditions weathered rock

Based on the soil classification, assess geotechnical and estimated the actual volume, quality of rock material

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1.4 Location of survey area

Location of bore hole in the plan area is at Bai Nga – Dong Hoa District – Phu Yen Province Based on determine coordinates of boreholes, positions are determined by GPS tool and about elevation had provided by Client

1.5 Study scope and Standard system application

 Technical specification of the project area follows as:

1.3 Classification of Soils for engineering Purposes ASTM D 2487-06

2.6 transportation and curing of samples

3.1 Standard Test Method for Unconfined Compressive Strength of Intact Rock Core

Specimens

ASTM D 2938-95

B Other Reference standards:

 Method statement for Geotechnical Investigation was approved by Engineer of Employer

 ASTM – American Society for testing and Material

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 BS – 5930: 1999 Code of Practice for site investigation British Standards instution

 TCVN – Vietnam Construction Standard (22TCN 259 – 2000)

Soil names was determined by site boring record of the boreholes Soil layers were determined based on classification in situ, state and distribution of them

2 Quantity of geotechnical investigation

Site investigations were include drilling, taking sample:

Drilling and taking samples at 2 Borehole;

42 taken samples in situ and 10 taken samples were tested in laboratory;

More details on quantity of works are shown on table 2

QUANTITY OF WORKS INVAGETIGATION

No Borehole Actual coordinates Elevation (m) Borehole Depth of Sampling Number of core

box

3 Equipments

Using 01 drilling machines XY – 1A Made in China with maximum capacity of 150m Following equipments were used for site investigation:

Table No.3: Equipments were used for the site investigation

01

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Manpower attended in the investigation is shown in the table below

Table No.4: Manpower

1 Qualified geotechnical

4 Survey method

4.1 Exploration Drilling process and Sampling

Drilling methods shall be rotary, core rotary or percussion drilling with betonies solution

The core samples are taken 100% by double core tube according to ASTM D 2113-06 The equipment ensures the core samples with proper condition during investigation The rock sample are taken by diamond drill bit, shall allow the assessment

of total core recovery (TCR), solid core recovery (SCR), and fracture index and rock quality designation (RQD)

5 Laboratory Test

Physical – mechanical properties of rock (specific gravity, Determination of amorphous silicate content, water absorption test, Determination of alkali silica reactivity and Unconfined compression test of rock.) are determined in accordance with Vietnamese standard and American standard ASTM D854, C3111-2007, D 2938-95,C

127, C 227

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6 Daily report and Photographs

6.1 Daily report

A daily quantity Report shall be completed by Geotechnical engineer and agreed to

by the Client upon completion of each day’s work by Geotechnical engineer will come

to agreement with the Client or his representative on quantities of work performed each day Daily report shall be supplied for the Client sighed by Geotechnical engineer and the Client upon the completion of each day’s work

6.2 Photographs

All the field investigation such as boring, sampling have taken photographs More details in photograph can be see in appendix No 5 (inserted in the daily reports)

7 Geotechnical characteristics of the project area

7.1 Geological feature of area

Based in geology map sheet of Tuy Hoa 1:200 (D-49-XXVI) on 1:200.000 scale, which was issued by the Geological Bureau, geological structure in the geological investigation area are divided as follows:

Bedrock

Complex Deo Ca (yD-yl;-yK de): The Complex Deo Ca is exposed in Tra Buc, Muong Han, Song Cai, Nui Huang and Deo Ca massifs It is composed of 3 intrusive phases and 1 dyke phase

- Phase 1 (Kđc1): exposed in the northern margin of the Deo Ca massif in some small bodies It is composed of biotite-hornblende granodiorite and biotite-hornblende granomonzonite These rocks are grey coloured with pink spots, irregularly small-grained, of massive structure and hemidiomorphic texture Mineral composition (%): plagioclase = 28-47; quartz = 17-28; kalifeldspath = 18-40; biotite = 5- 15; hornblende = 0-8; together with sphene, apatite, zircon and magnetite

- Phase 2 ( đc2): is the main component of the Complex Deo Ca It is composed of biotite granosyenite and biotite (hornblende) granite These rocks are pink-grey coloured, coarse-grained, of massive structure and hemidiomorphic texture, but

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widespread porphyritic texture, with pink kalifeldspath as phenocrysts, 0.5 - 2.5cm in size, on a medium-grained groundmass Mineral composition (%): plagioclase = 14-32; quartz = 18-34; kalifeldspath = 30-62; biotite = 3-10; hornblende = 0-5 together with sphene, apatite, zircon and magnetite

- Phase 3 (đc3): exposed in the Deo Ca massif in some small bodies It is composed of biotite granite and biotite granosyenite These rocks are pink coloured, irregularly small-grained, of massive structure and hemidiomorphic texture Mineral composition (%): plagioclase = 22-33; quartz = 25-38; kalifeldspath = 339; biotite =

3-6 together with sphene, apatite and tourmaline

- Dyke phase: found in almost all massifs of the complex The dykes are usually some decimetres to some metres thick, stretching on tens metres They are composed of aplitic granite, pegmatoids and small- grained porphyritic granosyenite Accessory mineral association in hard rock concentrates panning samples (g/t): magnetite = 1,014.9; ilmenite = 13.33; hematite = a little, pyrite = 2.96, sphene = 87.81; apatite 0.49; zircon = 7.09; cyrtolite = 0.7 together with molybdenite, anatase, fluorite, rutile and tourmaline Petrochemically, the described rocks belong to the calc-alkaline line rou alkaline t e with otassiumoften prevailing over sodium (Na / K = 0.51 - 0.87) According

to the classification of Chappell and White (1974), they belong to the I-granite typc, or after Ishihara S (1977), to the magnetite granite series Significant microelements (clarke): Sr = 0.66 - 1; Ba = 0.38 - 0.56 having high frequency (82-100%); Co = 3.5; Ni

= 1.5 - 5.6; Cu = 2.58; Pb = 2.4; Ag = 200; Sn = 3.77; Mo = 8; Yb = 2.78 and Zn = 1.66

- 4.16 Related minerals: Cu-Mo (Deo Cll massif) Granosyenite of the Deo ca Complex penetrates granodiorite of the Upper Jurassic Dinh Quan Complex, observed at Hoa Nguyen, felsic cffusives of the Cretaceous Nha Trang Formation, observed at Niii Huong, as well as Lower Jurassic Dray Linh Formation in the northern foot of the Deo Cll massif Isotopic datation (K-Ar) of biotite from granite collected in the northern foot

of the Deo Cll massif gives a value of 127 Ma (Nguyen Xu an Bao and Huynh Trung, 1980), and from granite of the Deo Cll massif gives 87 ± 3.3 Ma (Lasser, 1974) All above-cited factual data allow to date the complex as Cretaceous

Quaternary deposite

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Lower Pleistocene, upper part: Tuy Hoa Formation (amQ/ th).The Tuy Hoa Formation was described recently by Tran Tinh and VG Van Vinh (1993) while surveying the Tuy Hoa map sheet on 1:200000 scale, grouping fluvio-marine sediments lying in the depth from 76.8 to 106.5m (borehole TH.2 at Dong Tac village, Tuy Hoa District) beneath the Tuy Hoa plain The section IS composed of 4 members:

- Member 1 (106.5 - 102.2m): cobble, pebble, granule grading upward to sandf grit and clay with interbeds of clayish silt; 4.3m thi~k Grain composition of pebble and granule consists of siltstone, rhyolite, arkosic sandstone and quartz Granulity composition (%): pebble-grit (1- 5mm in size) = 13-20; coarse sand = 30-40; medium-grained to fine sand = 30-40; clay-silt = 10-15; cobble <1 The grains are badly rounded and sorted The granulity quickly changes upward In the upper part of the member the granulity is seen as follows (%): grit = 4.5 - 35; sand = 30-60; silt = 9-35; and clay =

20-35 The panning sampling from drill core has been giving sapphire (1 to 5 grains, 0.12 x 0.25mm), gold (3-5 grains), cassiterite, cinnabar, ilmenite, monazite, tourmaline, limonite, zircon and rutile

- Member 2 (102.2 - 90m): greenish-grey to black-grey silt and clay intercalated with white-grey fine sand; 12.2m thick Silicate analysis of clay gives (%): Si02 = 59.02; Al203 = 17.26; Fe203 = 6.07; S03 = 0.77; P20S = 0.03; Na20 = 1.25; K20 = 2.93; H20

= 2.52 and; LOI = 8.16

- Member 3 (90-81m): black-grey clay and coaly clay bearing carbonized plant debris and large-sized mollusc shells; 9m thick Foraminiferas studied by Pham Thi Bach Mai comprise Nonion grateloupi, Rotalia japonica, R tochigensis, R ozawai, Elphidium craticulatum, E jenseni, Giroidina nipponica, Bolivina striatula nishikanbaraensis, Bucella frigida, Quinqueloculina seminula etc giving the age from Mio-Pliocene to present day, and the littoral environment

- Member 4 (81-77m): greenish-grey clay, 4m thick

The total thickness of the formation in this section reaches 29.5m The Tuy Hoa Formation has been assigned to Early Plei~tocene, upper part

According to the map 1/50.000 Tuy Hoa formation is devides into parts, The Area

A belong to follow complex:

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- Wind deposite VQIV23 includes dunes located on the south and east

- Marine – Swamp Depsite Hon Chong mbQIVhc2-3

7.2 Tectonics and Earthquake

Faults

Faults are fairly developed in the Phu Yen Province, having mainly 3 principal trends: NE-SW, NW-SE and N-S NE-SW faults are developed with medium scale in the Deo Phuong Hoang - Deo Ca block, with the Vinh Long - Tuy Hoa fault as the most significant All the faults of this group have an almost vertical slip surface and a clear left-lateral movement

- N-S faults are small- and medium-sized faults, developed in Hoa Nguyen area They all have a vertical slip surface

- NW-SE faults have been recognized in Deo Ca and San Hoa areas, consisting of small- to medium-sized faults

According to the Geological Map 1/50.000, fault has not been discovered on the investigation site

Earthquake

According to the study and published by Global Physical Institute of Vietnam, the area belong to stability area with intensity I= 7 (MSK scale) of earthquake ( TCXDVN 375-2006) with max magnitude a=0.0656 ,

7.3 Hydrogeological condition

The location is surrounded by Da Nong river and sea at the east Ground water are existing in made ground, zone of fissured and weathered and supplied mainly by rainy

In according to the hydrogeological report of Phu Yen coastal sand established by the Department of Water Resource Management, reserves of water in marine deposits is medium and small only

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