QINSy at Mormugao Port, Goa, India by QPS e-library

Consultancy Services for Preparation of Feasibility Study for

Development of

Waterfront West of Breakwater at Mormugao Port, Goa

Final Report - Vol. II ( Appendices) 1 st December, 2009

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Appendix A: Document Summary and Meeting Minutes

_________________________________________________________________________________________________________ Consultancy Services for Preparation of Feasibility study for Development of Waterfront West of Breakwater at Mormugao Port, Goa

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Appendix A: Document Summary and Meeting Minutes Document Summary The Port has made available certain documents, reports and drawings for the purpose of initial study and understanding of the project requirements. These have been provided as hard or soft copies and the team has been using them as reference material. The material available is listed below: Business Plan (Halcrow Report) – 2 Volumes In preparation of a Business Plan, a report was submitted by Halcrow Group Limited in association with Earnest & Young Pvt Ltd to the MPT in March 2007. The objective of the study was to define a long term vision for the port and establish goals over the next seven years. It was to identify strategies with an implementation plan and identify financing sources. The TranSystems/Mir team is basing certain assumptions on data available from this report. Geotechnical Investigation – Development of Berth 7 – Fugro report Fugro Geotech Limited in July 2008 submitted the Geotechnical Investigation report for the proposed site to develop Berth 7 at MPT. The investigation objectives were geotechnical properties in soil/rock at the site offshore seabed and obtain engineering properties and classification of soil/rock. Soundings and bore hole details (Hydrographic Report) The soundings for the Port area was surveyed and prepared by the Minor Ports Survey Organisation, Ministry of Shipping, Government of India in May 2004 and also covers the area West of Breakwater. The borehole details submitted were prepared by Fugro. Topographic & Contour plan of Mormugao port The Topographic and contour plan of the port consists of 55 drawings to a scale of 1:500 and an Estate Plan of scale 1:7000. Copy of key plan showing areas to be dredged at berth No: 9 & Approach channel The key plan is a drawing on a sheet indicating the areas to be dredged. Preliminary wave tranquility studies from CWPRS The preliminary wave tranquility study was conducted by the Central Water and Power Research Station (CWPRS), Pune and report submitted in February 2002. This was a combined study for Baina

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Bay and West of Breakwater. The CWPRS has with them a Physical Model of the MPT and future modeling if required, would pose no time delays. Technical report of Berth No: 7 The technical report for the development of Berth 7 at MPT was prepared internally at MPT. The preparation of a RFP to be issued to prospective investors would be based on this report. The report covers technical, cargo prospects and financial viability. Certain updated data over the Business Plan report is available in this report. Sub Bottom Profiling Survey for the area West of the Breakwater line of Goa Port DBM Geotechnics and Constructions Pvt Ltd, Mumbai was contracted by MPT to conduct a sub bottom profiling of the area west of breakwater line within the port jurisdiction. Survey data acquisition operations were conducted between 16th to 18 th February, 2009 and the report submitted in March 2009. Survey data submitted as part of this report was studied and taken into consideration by the consultant team. Upgradation of MOHP at MPT HOWE India Pvt Ltd. were contracted by MPT to look into the possibilities of upgrading existing facilities at the ore handling plant which they felt was outdated. Navigation Chart No.2020 â&#x20AC;&#x201C; Approach Channel to MPT Hydrographic Survey of India, Dehradun Tourist Statistics This data booklet published by the Department of Tourism, Government of Goa projects various issues of the tourism infrastructure in the state and tabulates different data in regard to tourists arrivals and nature of tourist activity. Annual Report 2007-2008 Government of India, Ministry of Shipping, Road Transport and Highways This annual report published by the Ministry of Shipping gives an overview of activity within the Maritime sector and covers all areas of Port development with projects, policies and future plans.

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Annual report 2007-2008 MPT India Infrastructure Report -2008 This report published by the Oxford University Press in association with the Infrastructure Development Finance Company; the Indian Institute of Management, Ahmedabad and the Indian Institute of Technology, Kanpur addressed the issues to highlight the potential of private sector participation in infrastructure development to improve service delivery, time and cost factors. The Indian Coal Sector – a tale of promise and problems Bishal Thapa & Sandeep Kumar ICF International Cruise Shipping Policy Guidelines for Upfront Tariff setting for PPP Projects in Major Ports – Tamp Scale of Rates – MPT Coordination of Business Plans for Major Ports in India Indian Port Association in collaboration with Port of Rotterdam Background Paper – transition to a liberalized environment in Ports TERI New Delhi – S Sundar & S K Sarkar Meeting Minutes It is felt that data generated from extensive meetings and interviews with stakeholders covering exporters, operators, agents, and members of commerce and industry, with possible stress on the power and steel sectors, will eventually form the basis of a market analysis leading to an assessment of infrastructure requirement and possible facilities at the new terminal. The MPT has facilitated the star t of this activity through the release of a “Notice of Appointment” of the Consultants in the National print media and also through direct mailers and e -mails.

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A chronological order of meeting to date is listed with brief details. 1.

Organisation:

Bharathi Shipyard Limited, Sancoale, Goa

Official met:

Mr.G.V.Patil, Chief General Manager

Discussion topic :

Discussion was primarily on general current scenario in respect of ship

building with special emphasis on the Goa region. Also discussed were the activities at Bharathi, Goa with the possibility of future growth. 2.

Organisation:

Ocean Cruises India Pvt Ltd and Elesbao Pereira & Sons, Goa

Officials met:

Capt.Manoj Sharma & Mr.Kenneth Pereira

Discussion topic:

Discussion covered the past and existing cruise traffic through Goa Port. The

advantages of Goa as a tourism destination and the difficulties that was faced by cruise operators and agents in handling vessels at Goa Port were presented at the meeting. The possibility of more vessels using Goa as a Home Port was also discussed along with mention of a marina. Issues like security, ease of access for passenger coaches and handling were also part of the discussion. 3.

Organisation:

South West Port Limited, Goa

Officials met:

Mr.Rama Chandra Rao, Senior Vice President Mr.B.P.Shah, General Manager â&#x20AC;&#x201C; Projects

Discussion topic:

The handling of coal at Goa Port was the main subject of discussion. Issues

like handling equipment, volumes handled and loading/unloading procedures were discussed. Rail connectivity and the difficulties in the handling of rakes with loading procedures were also covered. Another important and relevant subject was the possibility of coal handling volumes that could be developed at the Port and the requirement of additional handling and berthing facilities. 4.

Organisation:

Western India Shipyard Limited, Goa

Officials met:

Cdr.S Mutreja, Director & CEO Mr. J.C.F.Sequeira, VP (Corporate Affairs) & Company Secretary

Discussion topic :

Ship building and ship repair scenario in the region was discussed. The

operations of WISL at Goa Port in relation to space utilization and vessel handling turnover were discussed. Possibilities of rig building/repair facilities as existing and future prospects were also part of the discussion.

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Organisation

Indian Railways

Official met

A A Siddique, Area Officer

Discussion topic:

The discussion was on infrastructure and handling facilities established and

operational within the Port. The available and optimum capacity that the Railways could make available for Port cargo was a subject that was raised at the meeting. 6.

Organisation

Loading point, Femento Industries, Sanvordem

Official met

None.

Observation: T he primary reason to visit the transshipment of iron ore from rakes/mines to barges was to understand the procedures and volumes handled prior to the cargo reaching the Port. 7.

Organisation

Carsons, Goa

Official met

Mr.N.Carvalho

Discussion topic: The purpose of this meeting was to understand barge ownership, operations and repair facilities in the region. Operational constraints especially during low tide and the monsoon months and the possibility of barge population increasing in the future were discussed. The prospects on future barge construction and repairs were evaluated. 8.

Organisation

MMTC â&#x20AC;&#x201C;Minerals and Metals Trading Corporation, Goa

Official met

Shreedhar .N. Nayak, General Manager

Discussion topic: Iron ore Export Market scenario was discussed in terms of future potential, cost factors and prospects within the Goa region. Some data that was generated are: China imported 28% more Quantity at the time of Olympics. local factories of China were shut down at that time; Brazil is a tough competitor for India in regard to Iron ore export. MMTC handles only 1 million tons of Iron Ore per annum and is presently sourced from Karnataka . MMTC also imports steel scrap to the tune of 12000 M/tons. It was felt that the present capacity of existing berth is excess compared to the relative quanti ty handled in the recent past. Last year approximately 30 M/tons of Ore export was handled through the berth and other moorings and berth No 9 was most preferred due to better facility of mechanical loading. Operation charges were around Rs.90/ Per M/ton and Rs, 70 /per M/Ton at the moorings. Port charges were at Rs 10/- Per M/Ton. MMTC felt that import of cargo would pick up with the development of

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better facilities.

Improvement of road and rail facilities is to be looked in to facilitate better

transportation so that import and export from Goa port can increase to a large extent. MMTC will be interested in associating with the development of dedicated facilities for iron ore handling. 9.

Organisation :

Indian Coast Guard , Goa

Official met

Cdr. M.S Dangi, Deputy Inspector General (Goa Area)

Discussion topic: Coast Guard requires dedicated berthing facilities which are currently not available at Goa and therefore vessels are being sent to Mumbai or even to Calcutta due to this constraint. The Coast Guard requires jetties of 150 M ts length with back up area to the tune of 1000m 2 for fuel dumps, power transmission, a small administrative office and other supporting facilities. With the availability of space and facilities there is good scope for es tablishing a ship repair facility as well. The largest vessel of coast guard is 105m long with a draft of 8m . Coast Guard could consider Goa as a base port if all facilities were made available and could also consider investing in these additional facilities. 10.

Organisation :

National Centre for Antarctic and Ocean Researches

Officials met

Mr. Rasik Ravindra – Director and Dr. Sudhakar – Group Director

Discussion topic: The NCAOR operates seven vessels, all out of Goa Port. The “Sagarkanya” has a maximum length of 101m and a new vessel of length 150m is planned to be procured in the year 2012. Normal vessels stay at port for a maximum of 3 days and the Antarctic expedition vessel would stay up to 7 days (normally once in a year). It would be ideal if they had a dedicated facility with berth length up to 150m with supporting infrastructure like cranes, office space and covered and uncovered storage area.

On board strength on normal vessels is around 60-80 personnel and around 100 on the

Antarctic vessel. 11.

Organisation :

The Indian Navy

Officials met

Cdr N.V. Kesry. Command Operating Officer

Discussion topic: Navy urgently requires exclusive and dedicated berthing facilities at Goa. The requirement would be for a berth of length 300m with a draught of 14m as INS VIKRAMADITYA, being commissioned, has a length of 240m . Other facilities required in land include turnings space for the Trailers, fuel, and proper road connectivity.

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12.

Organisation :

V.S Dempo & Co Pvt Ltd

Officials m et

Mr.Sanjay.V.Shinde- General Manager –Export.

Discussion topic: Among the subjects and issues discussed was Iron ore export scenario during the past and the future prospects. Even though the cut off grade of iron ore to be exported was 58%, even 47% grade was handled because of demand. This situation may not come again. Dempo felt the present reduction in ore export is only a temporary phenomenon and volumes could average around 30-35 Million tons in the coming years. Dempo were not very keen on additional facilities. 13.

Organisation :

Sesa Goa

Officials met

Mr.P.B.Powar-Consultant, Mr. R oi Gomas Prazeres- Associate General Manager.

Discussion topic: It was felt that the prospects of coal import and ore export are promising. The opinion was that the present situation of reduction in Iron ore export is only temporary and will improve. Iron ore reserves in the region will last over another 30 years. It was felt that a multi purpose berth will be more ideal with mechanical ore handling arrangements and should be able to handle cape size vessels. Better rail infrastructure was also the need for better volumes at the Port. Sesa Goa would be interested in additional berths in the port with a stock piling capacity for 1 Million tones ie. 80,000m 2. They would also be interested in investment provided all facilities are made available. Sesa is also importing Coal from Australia to the tune of 6 Lakh MTS per annum. 14.

Organisation :

National Institute of Oceanography

Officials met

Mr. Sanil Kumar-.Scientist, Ocean Engineering and Business

Development and Mr. Govind H Rannade - Scientist “F” Geological Oceanography. Discussion topic: NIO already operates a small vessel and are planning to acquire two more vessels. The port stay of these vessels is normally for about of 5 days . They are willing to share berth facilities and would also require facilities for loading/unloading of equipment, samples taken and other sundry requirements like storage facilities and office space. They are also willing to share part of development cost.

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15.

Organisation :

Chowgule and Company Pvt Ltd

Officials met

Mr. Sumant L Kirlosker, General Manager Exports

Discussion topic: The GM Exports was of the opinion that the export of iron ore will rem ain in the future, but will not match the volumes over the past 3 years. He felt ore reserves in Goa may last another 10-15 years. They felt that mid stream operations were resorted to because of lack of port facilities And this dependence needs to be reduced. They felt that operations at berth 9 were dependable and were willing to consider dedicated facilities with financial participation, However, it was felt that rail infrastructure needs to be improved. 16.

Organisation :

Zuari Industries Limited

Officials met

Mr. A Mascarenhas, Assistant General Manager, Purchase

Discussion topic: Zuari are importing raw materials like Naphtha, furnace oil, Phosphoric acid, and ammonia and foresee an increase of volumes of 10 to 15% . Government policy does not allow export of fertilizers. They now have facilities in port for handling 5000 M/tons and would look for expansion up to 1500 M /tons. If new facilities are linked to their requirements they may consider use the proposed new facilities. 16.

Organisation :

Zuari Indian Oil Tanking Limited

Officials met

Mr. S Borwankar CEO

Discussion topic: This is a joint venture Company of Zuari and Indian Oil Tanking. They handle motor spirit, kerosene and High speed diesel. The products are supplied to HPCL and BPCL and the volume is around 2,60,000 kl/annum. The cargo brought by ships is transported from MPT to their facility through 14 kms of 20â&#x20AC;? pipe system. Ships normally stay for a day and they have a storage capacity of 71000 kl and feel that the current facilities available to them are adequate. 17.

Organisation :

South Western Railway, Hubli

Officials met

Mr. Praveen Kumar, general Manager, SWR: Mr. D G Diwate,

Principal Chief Engineer; Mr Braj Mohan, Chief Operations Manager Discussion topic : The discussions covered rail connectivity for MPT in regard to evacuation of imported coal from the port to end users in Karnataka. The present bottlenecks and possible future solutions

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were discussed. Issues like doubling of tracks, new development and possible investments into the infrastructure were also discussed. 18.

Organisation :

Power Finance Corporation and PFC Consulting, Delhi

Officials met

Mr. R S Johri, Executive Director (FG); Mr N D Tyagi, CEO; Mr.S

Baskaran Senior Manager (Projects); Mr.Dinesh Vij Executive VP; Mr Chinmoy Gangopadhyay, Executive VP (Resources) and Mr Subir Saha, Additional GM. Discussion topic: The discussions with the above officials primarily covered areas and issues of the power generation scenario in the country and the establishment of UMPP especially in the State of Karnataka. Topic of discussions also covered the proposed developments in MPT and the possibility of PFC funding for exclusive coal handling facilities for the power sector. 19.

Organisation:

Transocean, Goa

Officials met

Mr. Leon Dudley

Discussion topic: The discussions with Transocean covered the area of their involvement into off shore services. Discussed was their existing facility at MPT, the convenience of having facilities spr ead over the port area and the possibility of utilizing facilities in the proposed development at West of Breakwater. Transocean did see extensive growth in the sector and agreed that having all facilities within a fixed area was ideal. However they did not see the possibility of investing into any new development. 20.

Organisation :

Department of Tourism, Government of Goa

Officials met

Mr. Elvis Gomes, Director of Tourism

Discussion topic : The discussion with the Director was primarily on the to urism potential in Goa and the possibility of added advantages in the establishment and operation of a cruise terminal at MPT. 21.

Organisation :

Shipping Corporation of India, Mumbai

Officials met

Mr. Umesh C Grover, Director (Technical & Offshore Services) and

Mr.Suresh B Sawant, Manager.

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Discussion topic: The discussion with the Director was primarily on the off shore services being undertaken by SCI and the possibility of not just increasing their fleet but also the possibility of moving in to the Goa region. 22.

Organisation :

Oil and Natural Gas Corporation (ONGC), Mumbai

Officials met

Mr. A K Jain, GGM â&#x20AC;&#x201C; Head Marine Logistics.

Discussion topic: The discussion with ONGC was on the operations of off shore facilities and the possibility of ONGC moving into the Goa region. 23.

Organisation :

Ministry of Railways, New Delhi

Officials met

Mr. N Madhusudana Rao, Executive Director (Planning)

Discussion topic: The discussion with the Executive Director (Planning) was essentially to understand the development prospects in the Goa region and the possibilities and plans for increasing rail infrastructure to support MPTs plans for development. 24.

Organisation :

Chennai Port Trust, Chennai

Officials met

Mr. A Ravindran, DCE (Major Projects), Mr V Thiyagarajan, SE (M)

MOHP and Mr Leela Prasad EE (Mechanical) Discussion topic: The purpose of the visit to Chennai Port Trust was to physically verify the operations of the Mechanized Ore Handling Plant at the Port. Each facility within the Plant was visited and studied. Mormugao Port Trust During the period of stay the team was at Goa, various meetings were held with the Chief Engineer, the Deputy Chief Engineer and the Executive Engineer. The visiting members of the team also had the opportunity to call on the Chairman, MPT on three occasions. During these interactions various subjects were discussed and issues clarified. The team also inspected the existing breakwater and also undertook a water side survey of the port and the proposed area for development on a MPT Launch vessel.

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These interactions and discussions culminated in a “kick off meeting” at the Board Room, MPT at 1500 hours on 16th October 2008. This meeting was attended by the Chairman, the Heads of Departments (MPT) and Project staff. Mr. C. Matson, Project Head, presented a brief background and approach to the project and points were discussed and issues clarified. Subsequent to the press advertisement issued by the MPT, the team has received a few responses which are being followed up. The responses were from: Speedy Multimodes Limited, Mumbai Earnest John Group of Companies Sical Logistics Limited Lavender Cruises and Tours Pvt Ltd Carsons The direct mailers (39 addressees) and e-mails (51 mails) addressed to various organizations by the MPT have seen one response from N.K.Utilities, Hyderabad in regard to the coal sector. The officials at MPT who have provided valuable information and have assisted the consultant team in various ways are: •

The Chairman

•

Deputy Chairman

•

Chief Engineer

•

Chief Mechanical Engineer

•

Deputy Conservator

•

Chief Financial Advisor and Chief Accounts Officer

•

Deputy Chief Engineer

•

Executive Engineer (Planning)

•

Assistant Engineer

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Appendix B: Hydrologic Studies

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DOCUMENT APPROVAL SHEET

DOCUMENT TYPE

FINAL REPORT

CLIENT

MORMUGAO PORT TRUST,GOA

PREPARED FOR

DOCUMENT NO.

MORMUGAO PORT TRUST,GOA SUB BOTTOM PROFILING SURVEY FOR THE AREA WEST OF THE BREAK WATER LINE, OFF GOA, WEST COAST OF INDIA . Job.no.2337 Finrep (Rev. 0) dt. 09/03/2009

PREPARED BY

JITENDRA AHER

CHECKED BY

P.S. BANSOD

PREPARED AT

DBM GEOTECHNICS AND CONSTRUCTIONS PVT. LTD B/301, CENTAUR HOUSE ,3 rd FLOOR SHANTINAGAR INDUSTRIAL ESTATE, NEAR GRAND HYATT HOTEL,VAKOLA, SANTACRUZ(EAST) MUMBAI.- 400055

DISTRIBUTION

MORMUGAO PORT TRUST,GOA. (1 Copy)

PROJECT TITLE

_____________________

REV . NO.

DATE

DESC RIPTION

09/03/200 9

Sub Bottom Profiling Survey for the Area West of Break Water line, Marmagao port, off Goa, West Coast of India for MPT,Goa.

AUTHORISED SIGNATORY CHECKED APPROVED PREPARED BY BY BY SIG NAM SIG NAM SIG NAME N. E N. E N. DR.S

JDA

PSB

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LIST OF CONTENTS Page

1 2 3

2.1 3.1 3.2 3.3 3.4

4 4.1 4.2 4.3 5 6 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 9 9.1 9.2 9.3 9.4 9.5 9.6 9.7

Summary of results 20 introduction 22 general 22 SURVEY SCOPE & REQUIREMENTS 23 location 23 Description of the survey 23 Scope of work 23 Implementation strategy 24 resources 24 personnel 24 equipment 25 Vessel 25 deliverables 26 QA/QC PrOCEDURES FOR EQUIPMENT control of work 27 Projection parameters 27 HORIZONTAL CONTROL 28 vertical control 28 Echo sounder 28 Side Scan Sonar 29 sub-bottom profiler system 32 shallow soil sampling 32 Pre plots/run -in-plots 33 Processing of Data 33 Progress Report33 survey operation and procedure 33 Pre-Mobilisation Activities 33 Mobilisation 34 Inspection Activities 34 Procedure of survey 34 calibration 34 safety 34 DATA QUALITY CONTROL 35 Demobilisation 35 detailed results 36 general 36 horizontal control 36 vertical control 37 bathymetry 37 seabed features 37 shallow startigraphy 38 shallow soil sampling 39

APPENDICES

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APPENDIX B1 APPENDIX B2 APPENDIC B3 APPENDIX B4 APPENDIX B5

SYSTEM CALIBRATIONS of POSITIONING SYSTEM OBSERVED TIDAL READINGS & Graph ON-BOARD SOIL SAMPLE ANALYSIS LABORATORY SOIL SAMPLE ANALYSIS EXTRACTS FROM FIELD RECORDS

LIST OF DRAWINGS DRAWING NUMBER

DESCRIPTION

Job.no.2337 Finrep (Rev. 0) dt. 09/03/2009/1153 Job.no.2337 Finrep (Rev. 0) dt. 09/03/20091154 Job.no.2337 Finrep (Rev. 0) dt. 09/03/20091155

BATHYMETRY CHART SEABED FEATURE CHART SEABED AND GEOLOGICAL PROFILES

Total Number of Drawings

No. Rev. Charts Rev 1: 2000 1 0 Rev 1: 2000 1 0 H:1: Rev 2000 1 0 V:1:200 3 SCALE

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Location Map

Summary of results

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DBM Geotechnics and Constructions Pvt.Ltd,Mumbai was required to conduct Sub bottom profiling at west of break water line, Mormugao port Trust off,Goa, West coast of India. Survey data acquisition operations were conducted during 16th to 18 th February, 2009. All water depths wherever mentioned in this report refer to chart datum. General bathymetry within the survey area shows smooth seabed and the sloping towards Northwest gradually. Maximum depth in the survey area is 14.8 m on the NW corner of the survey area and minimum depth is 2.5 mtrs near SW corner of the survey area. From shoreline up to distance of 250 mtrs undula ted seabed is recorded and depth varying from 2.5 mtrs to 9.8 mtrs. Remaining survey area is recorded as smooth seabed depth varying from 9.1 mtrs to 14.8 mtrs. Bathymetry along the breakwater is recorded 4.6 mtrs and maximum is 10. 7mtrs. General trend of the contour runs from Northeast to Southwest and the depth reaches to 10 mtrs within distance of 250 mtrs from shoreline. In general, Side scan sonar reveals an almost a flat seabed with varying reflectivity as follows: Type 1 : Type 2 : Type 3 : Type 4 :

Low reflective sediments (Silty clays) Medium to high reflective lineations (Sand waves) Highly reflective surface (Weathered lateritic bed rock overprinted by fine Sands) Sand ripples overprinted on Type -1.

Type 1 : These sediments occur on the seabed predominantly all over the surveyed area in small patches except near the shore line where exposures of basaltic and lateritic rocks can be seen. Type 2 : Medium to high reflective lineations i.e. sand waves are found distinctly all along the Channel in a E-W trend between Eastings 368800 & 370400. Type 3 : Highly reflective surface represents weathered lateritic and basaltic rock exposures over which silty clay and fine sands are deposited. These are found all along the shoreline. Type 4 : Sand ripples occur in the middle of the surveyed corridor and are overprinted on Type-1 sediments. Apart from this no other significant features / items of debris were found within the survey corridor which could be hazardous to the proposed dredging operations.

The shallow geological successions within the window examined by the analogue data in the surveyed area can be described as follows:

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Unit - 1 : Unit - 2 : Unit - 3 :

Unconsolidated & cohesive silty clays (occurs as veneer all along the survey area) Fine to medium sand (occurs predominantly in the northwest quadrant of the survey area) Comprise highly weathered bedrock (lateritic and basaltic rocks) admixed with compact silty clay (occurs as along the survey area) whose base cannot be identifiable from the survey records

No anomalies associated with magnetic objects were recorded within the site survey corridor. Ten drop cores/grab samples were collected covering whole survey area and they confirm the geophysical survey results.

Introduction General

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M/s. MORMUGAO PORT TRUST GOA , intended to carryout Sub bottom profiling survey for the area west of break water off Goa for conducting the feasibility of dredging operation.This document details the final report on sub bottom profiling survey carried out by DBM GEOTECHNICS AND CONSTRUCTIONS PVT LTD., MUMBAI. These survey services comprise of the provision of suitable personnel and equipment in order to obtain, interpret and report on bathymetry, morphological and shallow stratigraphy within the survey corridors. Survey lines were spaced 100m intervals in North–South direction and cross lines were spaced at 200m interval in East-West direction. Echosounder, Side scan sonar and sub-bottom profiler system were deployed for carrying out surveys. Side scan sonar was operated with range scale of 100m either side of survey line. Gravity corer was used for collection of soil samples Observed tides of Goa were used to reduce raw water depth to chart datum.

Surveys were carried out between 16th Feb and 18 th Feb 2009.

Quality control, processing and preliminary data interpretation were undertaken at the site and on-board the survey boat during the operations, ensuring that the survey specifications were fully met with. SURVEY SCOPE & REQUIREMENTS location The survey area lies off Goa, West Coast of India between Lat 150 08’N to 150 20’N and Long 740 00’ E to 74 0 10’ E. Description of the survey Sub bottom profiling surveys were to be conducted by deploying Echo sounder, Side scan sonar and sub-bottom profiler (pinger). Differential Global Positioning System (DGPS) was to be used for providing positioning to the survey vessel. Scope of work The Scope of Work provided by the client through Work Order No.CE/WKS-756/5996 dated 31.01.09 as follows: •

Collection of shallow seismic profile (19Km)

Mir – Transystems Consortium • • •

Collection of echo sounder profile (19Km) Collection of side scan profile (19Km) Collection of shallow soil samples (10 in nos)

DGPS positioning system, Echo sounder, Sub bottom profiler and side scan sonar to be used for the surveys. Side scan to be operated with the range scale of 100m either side of the survey line. Gravity corer to be used for the collection of the soil samples. Observed tide to be used for reducing the raw water depth to chart datum.

Implementation strategy The following were to be provided by DBM as a minimum to complete the job as per specifications. • •

Survey vessel was to be provided by DBM to carry out the survey Qualified personnel to carry out the entire job, all survey equipment, tools to complete the job to the entire satisfaction to the Client Representative and in accordance with the requirements of the tender document and relevant specification. • Arrangement for mob and demob of equipment and personnel. • DBM to be responsible for the safety and maintenance of his equipment, personnel and shall carry adequate spares to meet all contingency requirements. • DBM obtained Port authority clearance for the survey vessel(s) deployed in the field. • DBM arranged, acquired all data, access, permissions and other activities/ services required for and/or incidental to performing the work tendered. • All equipment, operating personnel including travel cost of operator, transportation of equipment to and fro, surface transport and any other items required to complete the work as per the requirements of this contract were supplied/arranged by the DBM without any liability on the part of Client. Resources personnel PERSONNEL On shore Off-shore ----do-------do-------do-------do----

NAME Jitendra Aher Nivas Kank Sharana Basava Mangesh Gharat Dinesh Kumar Ashwani Sharma

FUNCTION Asst Manager.(survey) Party Chief/Hydrographic Surveyor Geophysicist Survey Engineer Survey Engineer Survey Engineer

Mr. Mahesh Naik, Mr. Vasco from MPT, Goa , were the client representatives at the site during entire period of surveys.

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Equipment a) Positioning & Navigation 1

LEICA MX 421 DGPS combined high performance beacon receiver

1 2 1 2

x x x x

Power supply for above Computer with Qinsy Navigation and Data logging Bar Check KVH 1000 Series digital Fluxgate Gyro Computer system + monitors ( one spare)

Remote helmsman monitor & Fix Box

b) Echo sounder System 1

ODOM DF 3200 MKII Dual Channel Echosounder

EG & G 272TD Dual Channel (100/500 khz) Towfish c/w spares kits

Edgetech 4100P Dual frequency & Dual channel digital side scan sonar system Tow cable (200m length)

Dual frequency transducer 24khz / 200 kHz + mounting bracket & base plate 1 x Bar Check, Computer Interface, 12 V Power Supply & Generator 1 x SMCS-108 Heave Compensator c) Side Scan Sonar System

d) Sub-bottom Profiler (Geoacoustics) 1 1

x x

Geoacoustics sub-bottom profiler Transceiver Geoacoustics Transducer c/w cables, mounting bracket and EPC recorder, etc

e) Soil Sampling 1 x Piston Gravity Corer 1 x Van Veen Grab Sampler 1 x Vane Shear meter 1 x Pocket Penetrometer All accessories and spares for the effective operation of the above. Vessel Boat ML Simple Simon with high manoeuverability and sufficient deck space was provided by DBM & utilized for carrying out survey.

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Deliverables ONE set of Final report / charts were to be submitted to client within 2 weeks after demobilization of field survey. The final charts in 1:2000 scale to be prepared depicting the following: - Bathymetry & Contours - Seabed Features - Seabed & Geological Profiles for representative lines Report text and charts were to cover the following: ?? Summary of results ?? Description of survey methods, procedures, equipment and instrument calibration data. ?? Bathymetry chart, scale 1: 2000. ?? Identification of any sub -sea obstructions, and seafloor instability. ?? Identification of sub-bottom sediment layer. ?? Presence of any metallic objects, debris on the seafloor. ?? Longitudinal geological profiles of the selected survey run lines covering whole survey area. ?? Summary of field activity report. ?? Soil data results ?? General conclusions and recommendations as per tender requirement. QA/QC Procedures for Equipment Following calibration methods for different equipment were carried out prior to start of surveys: Positioning system The DGPS positioning system was calibrated at a known location on top of DBM Workshop Building prior to mobilized in the field. DGPS antenna was placed on the specified station and the positions were logged for duration of 30 minutes. The observed co-ordinates were compared with the co-ordinates of the known station. Echo sounder The dual frequency echo sounder systems were bench checked prior to mobilisation. The outboard could be marked from the base of the transducer shoe at 0.1metre intervals (these marks were used to confirm transducer draft once the arrangement is deployed). The Bar Check will confirm the marks at a regular interval of one meter and that the marks are readily identifiable. The Echo sounder was interfaced to the Navigation and Data Logging computer to confirm that the digitization of depths is operational. Portable transducers were installed rigidly to a bracket at suitable location on the survey vessel. These were at sufficient depth so that it should not experience the turbulence and

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aeration when the vessel steams at survey speed. The depth of the transducer below waterline was ascertained by reference to present marks on the pole. Prior to commencing survey works, the Echosounder was calibrated against a barcheck. The procedure is to confirm the following constants: Tx = To establish index error (combined effect of transducer depth and delays in the recorder) Vp = To confirm velocity of propagation of sound in saline water. With the vessel standstill in the waters, the Bar was lowered to at least 2m below the transducer and the nearest mark on the chain set at the water line. Once the transmission mark is set the apparent depth of the transducer were noted on the analogue record and recorded in the deck log for future reference. Velocity of propagation of acoustic wave in water column was assumed to be 1530m/sec. The Bar was lowered at regular intervals to the maximum practical depth. The bar was allowed to settle at each depth. On recording the maximum depth the Bar was similarly stepped back to the surface. The digitized depths were also checked during the Bar calibration. Side scan sonar SSS sonar was dry and wet tested in the survey area prior to deployment on a survey line. Sub bottom profiler Sub bottom profiler was dry and wet tested in the survey area prior to deployment on a survey line. Control of work Projection parameters Surveys were conducted in WGS 84 spheroid, Indian Datum, Grid co-ordinates are in terms of Universal Transverse Mercator (UTM) Projection. Details of Spheroid and Grid systems are as follows: GEODETIC PARAMETERS Datum WGS 84 Spheroid WGS 84 Semi-Major Axis (a) 6378 137.000 metres Sem i-Minor Axis (b) 6356752.314 metres First Eccentricity Squared (e^2) 0.006694380 Inverse Flattening (1/f) 298.257223563 PROJECTION PARAMETERS Grid Projection Universal Transverse Mercator Central Meridian (CM) 75° East (Zone 43) Origin Latitude (False Lat.) 00.0° Hemisphere North False Easting (FE) 500000.0 m False Northing (FN) 0.0 m Scale Factor on CM 0.999600 Units Metres

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HORIZONTAL CONTROL Position for the vessel during the survey was provided by LEICA MX 421 combined DGPS beacon receiver system. Differential correction signals were received on-board during survey operations continuously from the nearest DGPS beacon reference station (DGLL Station). These are maintained by Director General of Light Houses and Light Ship, Govt of India. An integrated GPS/Beacon receiver with built-in antenna provided GPS differential corrections in NMEA-0183 format for navigation with high degree of accuracy. DGPS is a combined high performance GPS receiver and a differential beacon receiver in an extremely compact and fully waterproof enclosure providing high accuracy by utilizing the broadcasted 283.5 – 325 KHZ frequency differential GPS corrections from IALA (International Authority of Lighthouses Association) beacons. The positioning data received had high reliability and integrity. The system was calibrated at a known location on top of DBM workshop roof prior to mobilisation (See Appendix “C1” for positioning system calibration).

Navigation & Data Logging QINSY is a world's leading software solution provider for navigation, hydrographic survey, data acquisition and processing needs. QINSY provides a user-friendly turnkey solution for all types of marine navigation, positioning and surveying activities. From survey planning to data collection, data cleaning, volume calculations and chart production, QINSY offers a seamless data flow from a large variety of hardware sensors, all the way to a complete chart product. Qinsy runs on a standard PC platform under the Windows (NT/2000/XP) operating system. The software is not only independent of sensor manufacturer, but also hardware independent. One is free to buy his own off-the-shelf hardware components and QINSY will work with them. One is not tied to specific hardware in any way. Vertical control Observed tide was provided by the client and same was used for reducing the raw water depth to chart datum (See Appendix “D” for tidal reading and Graphs)

Echo sounder

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ODOM DF3200 MKII Dual frequency Echo sounder integrated with a DGPS positioning system were used during the entire survey to record geographically referenced bathymetric data for measuring water depths. Sea swell were eliminated by SMC-108 motion sensor (heave compensator). Digitized data were confirmed by the inspection of analogue records. Velocity of propagation of acoustic wave in water column was assumed 1530m/sec. Echo sounder was calibrated against bar check prior start of survey. (See Appendix C2 for bar check calibration)

Echo sounder Settings Frequency

24 KHz & 200 KHz.

Range on record

Auto

Vertical Paper scale

1:100

Data reduction and presentation The system was operated following recommended manufacturer procedures. The vertical paper scale was set at 1:100 and the appropriate phases were selected to display the seabed (and the heave compensator trace) at all times. Transducer offset were logged and applied during subsequent processing. Event marks corresponding to position fixes were generated automatically from the on-line navigation computer interface, and passed to the analogue recorder at a regular interval. Prior to processing, the data files were backed up. The essential Hydrographic data thus obtained were tide corrected. Bathymetry data were reduced to chart datum-using observed tides provided by the client. Af ter applying the tidal corrections, crosschecks were carried out between the bathymetry at all tie-in points. The bathymetry was charted in decimal notation to the nearest one decimal place. The offsets of the echo sounder transducer from central referenc e point (GPS Antenna) on the survey vessel were recorded for the following: •

Layback

0.0m

•

Transverse offset

2.5 (Stbd)

•

Transducer depth

Side Scan Sonar EG & G 272TD dual channel `towfish' and an EG & G 260 recorder were provided to investigate the sea floor for morphological and other features which may interfere with

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dredging & installation of operations. Double coverage and beam angle shall be such that no blind zones exist in the designated survey areas. The graphic recorder and data processing system included dual sweep facility. The system was capable of depicting the sonar images corrected for distortions due to tow fish height and vessel speed and at a scale, which clearly displays the resolution of the system. The width of the sea-floor sonar image for each recording channel is not being less than 10 centimeters. Image correcting systems incorporated a continuous profile display of tow fish height as part of the display format. The sonar data processing unit and graphic recorder unit(s) were interfaced to the survey computer to accept the following: a) Fix mark and identifiers generated synchronously with the logging of position data. b) Smoothed vessel speed data. Sufficient tow cable lengths were provided to permit towing of the sonar fish at a maximum height above seabed in all parts of the survey area. The available cable length was normally be expected to exceed three times the maximum expected water depth in the survey area. All tow cables were measured and marked at regular intervals for lay back determination. The side scan sonar sensor design towing characteristics, cable and vessel tow point were selected to ensure the towed fish was adequately decoupled from any vessel pitching and rolling motion. All sonar data and associated fix mark and fix number information were stored, permanently, on an electronic medium. Prior to acceptance of equipment, and at any other time requested by the Company Representative, the system was thoroughly tested. Verification tests included, but not be limited to: a) In water testing of the sonar tow fish and cable connectors. b) Cross-talk evaluation by rub test. c) Transducer output functionality tests. d) Interfacing verifications. e) Graphic recorder performance tests. Wherever possible DBM also verified the performance of the side scan sonar system, in the area of operations, as part of mobilisation acceptance trials, using “know n” seabed installations or features as test targets. The 272TD towfish carries two 100 KHz and 500 KHz transducers mounted on either side. The acoustic beam emitted from each transducer has a horizontal beam angle of 1 degree and a vertical beam of 40 degrees tilted at 10 degrees below the horizontal. This configuration enables reflected signals to be recorded from contacts as far as 500 metres abeam, subject to the range selected. Side scan sonar was operated at a range scale of 100 metres either side th rough out the survey. The maximum towing speed did not exceed 5-6 kmph (3 knots). The records

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obtained by means of this equipment were suitable to form a complete morphological map of areas investigated. The offsets of the side scan sonar tow -fish from a central reference point (GPS Antenna) on the survey vessel were recorded for the following: •

Layback

6.60m + Cable out

•

transverse offset

0.0 m

•

transverse offset

Varies

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Sub-Bottom profiler system Geoacoustics Model 310B transceiver and Geoacoustics Model 310 side mounted Transducer Subbottom Profiler c/w cables were used in all survey lines for sub-surface data acquisition. The power output, `Time Variable Gain', Amplifier and Filter settings were set properly to give optimum resolution and necessary seabed penetration for the prevailing geological conditions. Event marks, corresponding to position fixes at regular intervals, were generated automatically by the navigation computer and were passed to the EPC 1086 Graphic recorder. Records were clearly annotated and cross-checked. The offsets of the sub-bottom Profiler from a central reference point (GPS Antenna) on the survey vessel were recorded for the following: •

Layback

0.0 m

•

Transverse offset

2.5m (Port)

•

Transducer depth

Shallow soil sampling Gravity corer having 3 m barrel fitted with an interval PVC liner and a cutting shoe at the bottom was deployed for collecting soil samples. In case of sands, a core catcher was provided in side the shoe to assist retention of the sample during retrieval of the sampler. Soil samples were collected at 10 specified locations covering whole survey area. The locations of the samples were determined by the on-board interpretation of the geophysical records and as specified by the client. In choosing the proposed sample locations, consideration was given to areas of interest, apparent change in surface compositions and areas where a consistent sub-bottom could be investigated by a single sample. Samples were collected in such a way that spacing between sample locations was such that different types of strata encountered with in the survey area were covered. At location where sand with shell fragments/gravel is encountered and gravity corer refuses to penetrate the seafloor on repeated attempts, grab samples were collected. Soil sample were extruded in the field and carefully examined and visually classified on board the vessel. Retrieved samples were tested in the on-board laboratory for classification purposes and for broad assessment of strength. All the samples covering all types of sedimentary strata encountered along the surveyed corridor were sealed and carefully packed for transportation to onshore laboratory for additional examination and testing. Testing facilities on board the vessel shall include, but not limited to, the following; • • • • • • •

Location / Job No./ Client Date / Time Position Fix No. / UTM Co-ordinates / Water Depth Method of Collection Colour Texture Composition

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• Recovery Length • In-site Vane shear test • In-site pocket penetrometer test Pre plots/run-in-plots Survey lines were planned as discussed in the scope of work and pre-plots for the area was prepared prior to commencement of survey. The pre-plots were run on the computer while doing the survey lines. Any deviation from the prefixed lines was flashed on the display along with the necessary course corrections to be made to adhere to the prefixed line. This enabled the Navigator to guide the vessel to the prefixed survey line all the times. Based on this examination an interpretation was made of the shallow geology with emphasis on the identification of conditions potentially hazardous to installation of seabed structures or dredging operation. Processing of Data The survey data logged in Qinsy format were processed in Qinsy Terra Model Processing software and finally presented in drawing form using AutoCAD Rel.14 for windows. Progress Report While on location, survey Party Chief Submited daily progress report to Client’s representative and also convey the same to DBM office in Mumbai. survey operation and procedure The following sections describe our method statement detailing the DBM approach to this project from award to issuing of final report. Pre-Mobilisation Activities This phase is considered to be very important for the successful execution of the contract. The following items were given detailed attention: -

Review of clients specifications and requirements;

Review of proposed equipment and configuration; - Preparation of project Briefing instructions for all field going and appropriate office based personnel; - Review of company QMS and Health, Safety and Environmental procedures in the context of this award;

Preparation of pre-plots, survey grids and tidal information in advance of field operations;

Advising all clients and relevant personnel out-of-hours and duty telephone numbers;

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- Collection of all survey logs, QMS material, stationery and consumables for the field programme. Mobilisation The Project Manager liaise with operations staff, the vessel master and Party Chief to make the appropriate arrangements to mobilise the vessel. The port of mobilisation and demobilisation for any phase of this project were Goa and were comprise only the boarding of client representatives with survey personnel and all other instrumentation having been previously mobilised onto the selected survey vessel. All instrumentation were port tests which were carried out as follows: Satisfactory installation of the DGPS system and computation routines. -

Checking of Echo Sounder Draft Settings (Index Error), via draft check method.

In harbour tests of all bathymetric, sonar, SBP systems.

Upon satisfactory completion of in harbour testing, the selected vessel proceeded to the initial work area. Whilst on passage, the Party Chief convened a meeting with all survey personnel, boat crew/ and client representative at which the clients objectives and operational parameters were discussed. Upon arrival on site, survey sensors were deployed and acceptance tests performed a s required, in order to complete mobilisation. Inspection Activities Following completion of all offshore equipment calibrations inspection activities were commence and proceed in accordance with the project schedule. Procedure of survey The survey operations were commenced as per the schedule described by DBM Geotechnics and Constructions pvt.ltd. after insitu testing and calibration of all the equipment. Survey lines were spaced at 100m in north-south direction and cross lines wee spaced at 200m in east- west direction. Echo sounder, Side scan sonar and sub bottom profiler were run on all the survey lines. Side scan sonar was operated with the range scale of 100m either side of survey line. Gravity corer was used for collection of soil samples. Observed tides of Goa were provided by the client and same was used for reducing the raw water depth to chart datum. Calibration Positioning system was calibrated at a know station at DBM Workshop building prior deployment in the field. Safety Safety was observed on the vessel while carrying out the surveys according to DBMâ&#x20AC;&#x2122;s HSE plan.

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DATA QUALITY CONTROL

The experienced operators provided by DBM Constantly monitored data quality as the survey progresses. A log of profiles was maintained and quality of data was noted. Demobilisation Upon completion of all survey activities to clientâ&#x20AC;&#x2122;s satisfaction at the final work location all survey sensors were retrieved for final demobilisation at Goa.

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Detailed results General M/s. MORMUGAO PORT TRUST GOA , intended to carryout Sub bottom profiling survey for the area west of break water off Goa for conducting the feasibility of dredging operation. This document details the final report on sub bottom profiling survey carried out by DBM GEOTECHNICS AND CONSTRUCTIONS PVT. LTD., MUMBAI. These survey services comprise of the provision of suitable personnel and equipment in order to obtain, interpret and report on bathymetry, morphological and shallow stratigraphy within the survey corridors. Survey lines were spaced 100m intervals in North–South direction and cross lines were spaced at 200m interval in East-West direction. Echo sounder, Side scan sonar and sub-bottom profiler system were deployed for carrying out surveys. Side scan sonar was operated with range scale of 100m either side of survey line. Gravity corer was used for collection of soil samples Observed tides at Goa were used to reduce raw water depth to chart datum.

Surveys were carried out between 16th Feb and 18 th Feb 2009.

Quality control, processing and preliminary data interpretation were undertaken at the site and on-board the survey boat during the operations, ensuring that the survey specifications were fully met with. Horizontal control Position for the vessel during the survey was provided by LEICA MX 421 combined beacon receiver system. Differential correction signals were received on-board during survey operations continuously from the nearest DGPS beacon reference station (DGLL Station) in the survey area. These are maintained by Director General of Light Houses and Light Ship, Govt of India. An integrated GPS/Beacon receiver with built-in antenna provided GPS differential corrections in NMEA-0183 format for navigation with high degree of accuracy. LEICA MX 420 is a combined high performance GPS receiver and a differential beacon receiver in an extremely compact and fully waterproof enclosure providing high accuracy by utilizing the broadcasted 283.5 – 325 KHZ frequency differential GPS corrections from IALA (International Authority of Lighthouses Association) beacons.

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Vertical control Observed tides of Goa were provided by the client and same was used for reducing the raw water depth to chart datum (See Appendix “D” for tidal reading and Graphs) Bathymetry The following text should be read in conjunction with Work Order No.CE/WKS-756/5996/dated 31.01.09/1153 and annotated data examples placed at AppendixG. All water depths mentioned in the following paragraphs refer to chart datum. General bathymetry within the survey area shows smooth seabed gently sloping towards Northwest gradually. Maximum depth in the survey area is 14.8 m on the NW corner of the survey area and minimum depth is 2.5 mtrs near SW corner of the survey area. From shoreline up to distance of 250 mtrs undulated seabed is recorded and depth varying from 2.5 mtrs to 9.8 mtrs. Remaining survey area is recorded as smooth seabed depth varying from 9.1 mtrs to 14.8 mtrs. Bathymetry along the breakwater is recorded 4.6 mtrs and maximum is 10. 7 mtrs. General trend of the contour runs from Northeast to Southwest and the depth reaches to 10 mtrs within distance of 250 mtrs from shoreline. No other bathymetric anomalies such as coral outcrops, sub marine channels, blow out craters etc were recorded at any point within the survey corridor.

Seabed features The following text should be read in conjunction with Work Order No.CE/WKS-756/5996 dated 31.01.09 /1154 and annotated data examples placed at Appendix F. The distribution of seabed features and the nature of the surficial cover is primiarily determined through the examination of side scan sonar data acquired. Gravity cores and other geotechnical information exists for the survey area to compare the analogue survey results with the physical soil samples and statements on sediment texture are, therefore, interpretative. Hence, qualitative analysis of the sediments is based on the reflectivities of the surficial sediments to 100 kHz sonar frequency. Additionally, appropriate reference to the echo sounder & sub-bottom profiler data sets within the survey corridor. In general, Side scan sonar reveals an almost a flat seabed with varying reflectivity as follows: Type 1 : Low reflective sediments (Silty clays) Type 2 : Medium to high reflective lineations (Sand waves) T ype 3: Highly reflective surface (Weathered lateritic bed rock overprinted by fine sands) Type 4 : Sand ripples overprinted on Type-1. Type 1: These sediments occur on the seabed predominantly all over the surveyed area in small patches except near the shore line where exposures of basaltic and lateritic rocks can be seen. Type-1 is interpreted to comprise of fine silty clays.

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Type 2: Medium to high reflective lineations i.e. sand waves are found distinctly all along the Channel in a E-W trend between Eastings 368800 & 370400. Type 3: Highly reflective surface represents weathered lateritic and basaltic rock exposures over which silty clay and fine sands are deposited. These are found all along the shoreline. Type 4: Sand ripples occur in the middle of the surveyed corridor and are overprinted on Type -1 sediments. Sand ripples are interpreted to be aligned in almost East-West direction indicating the predominant bottom current sense in North -South direction. The presence of sand ripples can be an evidence of an active sedimentary regime in which strong tidal currents erode, transport and then deposit sediments. Apart from this no other significant features / items of debris were found within the survey corridor which could be hazardous to the proposed dredging operations. Shallow startigraphy The following text should be read in conjunction with Work Order No.CE/WKS-756/5996 dated 31.01.09/1155 and annotated data examples placed at Appendix G. For the purpose of analogue data interpretation an assumed sound velocity of acoustic propagation of 1600m/sec has been adopted for the conversions of two way travel time to depth. Seabed & interpreted geological profiles have been produced for one centerline passing through the survey area and two transverse lines to cover the whole survey area. The sub-bottom profiler data, recorded at a sweep rate of 50 m/sec, was used to examine the shallow sub-surface stratigraphy. Penetration of the sub bottom profiler was achieved up to a depth of about 20 metres sub seabed or upto to 1 st seabed multiple to allow an accurate assessment of shallow geology within the geophysical survey corridor. The limit of recording reached before the seabed multiple is encountered effectively limiting usable data below this depth and obscuring further delineation of layers. Generally noise free coherent data is recorded to the limit of recording. All sedimentary properties defined in relevant sections below are based on assessment of the recorded acoustic characteristics of the material along with interpreted sedimentary structures. Additionally, gravity core sampling and other geotechnical information, appropriate reference to the echo sounder, side scan data sets within the survey corridor was carried out as necessary.

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The shallow sedimentary sequence within the surveyed area indicates formation of beach deposits. The stratigraphic sequence within the survey area indicates primarily sands with minor proportions of silt / clay. Unit -1 is the uppermost and parallel reflector unit identified within the surveyed corridor occurring all along the survey area. Sediments pattern indicate an acoustically transparent veneer of surficial layer at places within the corridor interpreted to comprise of predominantly unconsolidated silty clay. Based on the internal acoustics character of the sediments and the sediment sampling [gravity coring], delineation of Unit-2 and Unit-3 has been done. In the middle of the surveyed area parallel bedded homogenous sediments of low to medium acoustic impedance to the seismic energy formed rhythmically with the seabed changes are recorded and are interpreted as fine silty clay overprinted by deposits of fine to medium sands. This layer occurs predominantly in the northwest quadrant of the survey area and is designated as Unit-2. Average thickness of this Unit-2 sediment is about 0.8 metres. Underlain by Unit-2 sediments is Unit-3 which is interpreted to comprise highly weathered bedrock (lateritic and basaltic rocks) admixed with compact silty clay with density increasing with depth. This is the deepest layer discernible from the records. Base of this layer is not discernible from the records due to strong masking and also due to onset of 1st multiple obscuring further delineation of layers, if any, in shallow waters. This unit is recorded all along the survey areas. From drop core sampling it is observed that this is highly weathered. No anomalies associated with shallow gas were evident from the sub-bottom profiler survey records. Shallow soil sampling Ten drop cores/grab samples were collected covering whole survey area. Visual analysis (colour & type of soil) and shear strength parameters (with Torvane and Pocket Penetrometer) were carried out in-site on-board the vessel as soon as the sample is recovered. Out of these 6 representative samples were sent to the laboratory for further analysis. Their detailed on-board analysis is placed at Appendix C and laboratory analysis at Appendix D

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APPENDIX B1 (Hydrological data) SYSTEM CALIBRATION OF POSITIONING SYSTEM

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CALIBRATION OF DGPS POSITIONING SYSTEM AT DBM WORKSHOP ROOF,MUMBAI The DGPS system was calibrated at DBM office building station at Mumbai. The station is situated on the roof of the DBM Workshop building,Mumbai. The DGPS beacon system was placed on the specified station and the position was logged for a duration of 30 minutes between 1400 Hrs to 1430 Hrs on 14th Feb, 2009.The observed co-ordinates were compared with the previous establish station in the following table. OBSERVED CO-ORDINATES AT DBM WORKSHOP STATION WGS 84, CM 75, ZONE 43 UTM CO-ORDINATES TIME EASTING (m) NORTHING (m) 14:00 289 475.979 2111 284.143 14:02 289 472.535 2111 284.276 14:04 289 474.268 2111 284.411 14:06 289 475.316 2111284.030 14:08 289 474.105 2111 284.520 14:10 289 473.038 2111 284.241 14:12 289 474.268 2111 284.411 14:14 289 473.579 2111 284.526 14:16 289 472.877 2111 284.534 14:18 289 474.589 2111 284.324 14:20 289 474.355 2111 284.392 14:22 289 474.376 2111 284.486 14:24 289 474.567 2111 284.265 14:26 289 474.289 2111 284.234 14:28 289 473.935 2111 284.286 14:30 289 474.324 2111 284.328 MEAN

289 474.150

2111 284.275

Comparison between observed co-ordinates and previous establish station of office building station is as below.

Station: Marine office building

WGS 84, CM 69, Zone 42 EASTING NORTHING (m) (m) OBSERVED CO-ORDINATES in 289 2111 UTM 474.150 284.275 WORKSHOP BUILDING 289 2111 STATION 473.925 284.128 DIFFERENCE in UTM 0.235 m 0.147 m _________________________________________________________________________________________________________ Consultancy Services for Preparation of Feasibility study for Development of Waterfront West of Breakwater at Mormugao Port, Goa

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APPENDIX B2 (Hydrological data) OBSERVED TIDAL READINGS & GRAPH

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Observed tide at Goa Date 17-02-2009 Time Corr.Tide 10:00 0.74 10:10 0.73 10:20 0.74 10:30 0.75 10:40 0.75 10:50 0.77 11:00 0.78 11:10 0.80 11:20 0.81 11:30 0.81 11:40 0.82 11:50 0.84 12:00 0.87 12:10 0.90 12:20 0.92 12:30 0.95 12:40 0.97 12:50 1.00 13:00 1.05 13:10 1.09 13:20 1.14 13:30 1.16 13:40 1.19 13:50 1.23 14:00 1.27 14:10 1.29 14:20 1.32 14:30 1.34 14:40 1.36 14:50 1.40 15:00 1.42 15:10 1.46 15:20 1.49 15:30 1.51 15:40 1.54 15:50 1.57 16:00 1.59 16:10 1.61 16:20 1.62 16:30 1.64 16:40 1.67 16:50 1.68 17:00 1.71 17:10 1.71 17:20 1.72

17:30 17:40 17:50

1.73 1.75 1.75

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Observed Tide at Goa dated 17 Feb 2009

2.00 1.80 1.60 1.40

Tide

1.20 1.00 0.80 0.60 0.40 0.20

10 :00 10 :30 11 :00 11 :30 12 :00 12 :30 13 :00 13 :30 14 :00 14 :30 15 :00 15 :30 16 :00 16 :30 17 :00 17 :30

0.00

Time

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APPENDIX B3 (Hydrological data) ON-BOARD SOIL SAMPLES ANALYSIS

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Ist SHEET

DC - 1

DC - 3

1705014

70.00 66.00 62.00 58.00 54.00 50.00 46.00 43.00 42.00 40.00

100.00 80.00 40.00 20.00 10.00 4.7500 2.3600 1.1800 0.6000 0.3000 0.1500 0.0750 0.0620 0.044 0.031

100.00 100.00 100.00 100.00 100.00 100.00 99.00 98.00 96.00 94.00 92.00 90.00 89.00 87.00 84.00

1703989 Second Soil Sample 100.00 100.00 100.00 100.00 94.00 86.00 82.00 77.00 69.00 60.00 54.00 51.00 50.00 48.00 46.00

0.023 0.016 0.012 0.0088 0.0062 0.0044 0.0032 0.0023 0.002 0.0014

80.00 75.00 70.00 66.00 60.00 56.00 52.00 49.00 48.00 45.00

43.00 40.00 38.00 35.00 32.00 29.00 27.00 25.00 24.00 22.00

First Soil Sample

DC - 4 1705038.00

DC - 5 1704563.0 0

1704761.00

Third Soil Sample

Four Soil Sample

Fifth Soil Sample

100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 92.00 80.00 79.00 77.00 74.00

100.00 100.00 25.00 6.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00

----->

DC - 9

100.00 100.00 100.00 100.00 100.00 96.00 90.00 46.00 10.00 6.00 6.00 6.00

Mir â&#x20AC;&#x201C; Transystems Consortium

2nd SHEET

DC - 10 1704710 First Soil Sample

100.00 80.00 40.00 20.00 10.00 4.7500 2.3600 1.1800 0.6000 0.3000 0.1500 0.0750 0.0620 0.044 0.031 0.023 0.016 0.012 0.0088

0 0

Second Soil Sample

0.00 Third Soil Sample

0 0.00

0.00

Four Soil Sample

Fifth Soil Sample

100.00 100.00 100.00 100.00 85.00 75.00 64.00 52.00 42.00 35.00 30.00 29.00

0.0062 0.0044 0.0032 0.0023 0.002 0.0014

----->

100

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APPENDIX B4 (Hydrological data) LABORATORY SOIL SAMPLE ANALYSIS

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APPENDIX B5 (Hydrological data) EXTRACTS FROM FIELD RECORDS

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Appendix C: Financial Models

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Appendix D: Preliminary Design Drawings