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Balingian Hydrogeological and Geotechnical Studies (Ref No.Ser-2021-001)

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Balingian Hydrogeological and Geotechnical Studies (Ref No.Ser-2021-001) SARAWAK ENERGY BERHAD BALINGIAN HYDROGEOLOGICAL AND GEOTECHNICAL STUDIES (REF NO.SER-2021-001) TENDER NOTICE Suitably qualified tenderers are invited for the Balingian Hydrogeological and Geotechnical Studies stated as follows: Tender Reference Title Eligibility No. SER-2021-001 Balingian Hydrogeological and Geotechnical 1. Foundation and slope studies related experience; Studies 2. UPKJ Works,Class D or above, Head I, Sub-Head 5 (a); and 3. Sarawak-based office and manpower. Instruction to Tenderers: Mandatory Requirement Tenderers shall possess adequate financial capability and experience as follows: 1. Foundation and slope studies related experiences; 2. UPKJ Works,Class D or above, Head I, Sub-Head 5 (a);and 3. Sarawak-based office and manpower. *Interested tenderers who failed to comply with the mandatory requirements may be disqualified by Sarawak Energy. General Instructions 1. This tender exercise will be conducted on an online Ariba platform. The entire event will be managed by SEPRO (Sarawak Energy e-Procurement) Team. Tender details are available for viewing at http://www2.sesco.com.my 2. Please note that all Tenderers are required to register in SEPRO to participate in this tender. If your company is not registered in SEPRO, please allow ample time to complete registration. Vendors can self-register to SEPRO via the URL provided: http://bit.ly/register2SEPRO. The registration is free of charge. 3. Interested Tenderer that meets the eligibility is required to do the following steps: A) Email your interest to participate for this tender exercise to [email protected]. Please include the following details: • Tender Reference: • Tender Title: • Company Contact Person: • Company Name: • Phone Number: • Email Address: • (Attach all softcopy of evidence for mandatory requirement) 4. Tenderers shall attend the briefing and site visit held as follows. Tenderers who failed to attend the briefing and site visit may be disqualified by Sarawak Energy. Tender Briefing Site Visit Date and Time 4th March 2020, 10.00a.m. Not Applicable *Tenderers will be notified after submitting name list of their authorized representatives 3 days before the Tender Briefing Date to [email protected]. Venue Tender Briefing will be conducted online via Not Applicable Microsoft Teams ONLY shareholders, directors or Company's authorized personnel (through company's authorization letter) shall be allowed to attend the Tender briefing and Site Visit (if necessary). All tenderers must provide Original Copies (for verification) of Company Registration (Form 24 and Form 49) or Form I (The Businesses, Professions and Trading Licensing Ordinance) and Company Official Stamp during the Tender Briefing. 5. Tender documents can only be accessible to the Tenderer after registration. A) SEPRO team will acknowledge receipt upon receiving your email on interest to participate. If you have any inquiries on SEPRO please contact us at the following channel: • Email: [email protected] • Phone: 082-330127 Monday to Thursday : 9.00am – 1.00pm and 2.00pm – 4.00pm Friday : 9.00am – 11.30am and 2.30pm – 4.00pm Note: Sarawak Energy is not liable for any cost incurred by the Tenderer in preparing the tenders. Tender submission shall be submitted online through SEPRO system no later than 3:00 p.m. (Malaysia Local Time) on the date specified below. Tender Reference Number Closing Date Closing Time SER-2021-001 Wednesday, 10th March 2021 3:00 PM All enquiries regarding the Tender should be addressed to: Sarawak Energy Resources, Sarawak Energy Berhad Level 3, Menara Sarawak Energy No.1, The Isthmus 93050 Kuching, Sarawak. Attention: Siddy Anak Sengiang (Senior Mining Engineer, Mining Technical Services, Sarawak Energy Resources) Email : [email protected] INTRODUCTION 1. PURPOSE The purpose of this tender process is to procure Tender Offers from contractors to provide all Services required in connection with Balingian Hydrogeological and Geotechnical Studies. 2. INTRODUCTION Sarawak Energy Resources Sdn Bhd (SER), a wholly owned subsidiary y of Sarawak Energy Berhad (SEB), manages the coal extraction and supply to SEB 100% owned Balingian Power Generation (BPG) plant. With the soft coal deposit formation in Balingian, SER has to ensure its current operating mine (Balingian Energy Minerals (BEM)) and the proposed greenfield area is feasible in terms of slope and foundation stability. Meanwhile, the proposed greenfield project at the northern part of the BEM mine, is the continuation of coal deposit formation from BEM mine. As both projects are of soft formation and located in a low-lying area, the hydrogeological and geotechnical studies need to be done. 3. BACKGROUND Both the BEM mine and the proposed greenfield area are located in the Ulu Balingian which is approximately 80 km by road (1-hour drive) from the nearest administrative town centre of Mukah, or about 125 km by road from Sibu Airport (2-hours drive). There are regular direct flights between Kuching and Mukah/Sibu that take approximately 50 minutes. From Sibu Airport, the BEM mine and the proposed greenfield project area can be accessed via a tarmac road from the Bukut Road junction, off Mukah-Selangau trunk road, then to BEM site office. The road is accessible by all vehicles up to the BEM site office, and only 4WD vehicle can access from BEM site office to BEM mine and the proposed greenfield project area (approximately 8km further to the north from BEM site office). See Figure 1 for the project site location. Figure 1 Project Site Location. The BEM mine is currently operating two mine pits with its disposal for every mine pit. Its Panareh mine is located adjacent to Balingian river and another mine pit, Panjai is located towards west of the Panareh mine pit. For BEM mine, Panjai waste disposal, and mine pits hydrogeological studies are main concerns. Panjai waste disposal are about 10-20 m above the original ground level. The foundation and slope stability need to be determined. And for the hydrogeological studies, the general geometric of groundwater table needs to be established as the mining progresses, for SER's internal determination of slope stability. Meanwhile, for the proposed greenfield project, the area is generally low lying and flat with some low rolling ridge lines (running west/east), in the southern part of the area. the elevation of the ridge ranges from 8-27 m above mean sea level. The low-lying flat land areas has an elevation range of 4-11 m above the mean sea level, and about 1-8 m above the high tide level of the Balingian river. The Balingian river is about 2 km from the south-east part of the proposed greenfield project. Almost all of the proposed greenfield project area is under active palm plantations and with a network of systematic drainage. For the proposed greenfield project area, SER is going to conduct infill drilling (wash bored) on Q2 2021 to Q3 2021 via SER's appointed drilling contractor. In parallel, SER also will be conducting infill drilling to BEM mine pits. During the period, SER's drilling contractor will measure the actual groundwater table from the infill drilling hole and will conduct pumping test to the infill drilling holes. SCOPE OF SERVICES The Services to be provided by the Service Provider include the following: No Item 1.0 Health, Safety, Security and Environmental (HSSE) Aspects 1.1 To have a good HSSE management plan and high awareness on HSSE aspects during the project period. Weekly submission of safety (plus overall project progress report) and man- hours report, basic PPE compliance, usage of remote area communication devices and supervision by a certified site safety supervisor and environmental officer are compulsory during any on-site works. 2.0 Soil Investigation Scope 2.1 The soil investigation scope covers as below. Estimated Total Length Area ID Location Remarks Depth (mbgl) (m) Proposed gree Boreholes nfield mine pit 6 65mbgl 390 Full coring (Wash Bored) SPT - Standard N>50 for Proposed gree To determine Penetration Te 6 min. 2m, or cu 240 nfield disposal ground support st (SPT) t-off depth 40mbgl To determine Standard Current BEM properties Penetration Te 3 10-20mbgl 45 disposal material of st (SPT) disposal 3.0 Field Testing 3.1 To conduct SPT on the proposed greenfield, and current BEM disposals based on SER’s proposed coordinates, sampling requirement, and depth. 3.2 To conduct penetrometer test on the infill drilling and SPT cores of proposed greenfield proje ct for every change of lithology. 4.0 Sampling 4.1 To conduct sampling (including all accessories required) from the cores of infill drilling (proposed greenfield project) and SPT based on the SER’s to-be provided geological logging and geotechnical description of infill drilling, sampling requirement, and if the samples are suitable to be tested, the samples will be tested based on the SER’s proposed tests. 4.2 To follow SER's sampling requirement as below. Total Estimated Sample Frequency Quantity Every 10 m or change of lithology Boreholes (Wash Bored) 120 (approx. 20 samples per hole) Standard Penetration Test (SPT) Every 1.5 m 160 Greenfield Standard Penetration Test (SPT) Every 1.5 m 30 Disposal 5.0 Laboratory Testing (Provisional – only to be carried out upon instruction from SER) 5.1 The tests should be conducted by referencing to British standard or other standard that has international recognition. The proposed type of properties and tests are tabulated below. General Propertie Test Type Required Properties Approx. No. s Natural density Dry density Saturated density Physical PropertiesPhysical Test (washbored Moisture content 310 + spt) Degree of saturation Porosity Void ratio Uniaxial Compressive Uniaxial compressive strength Strength Test (washbored)Young's modulus 120 Mechanical Poisson's ratio Properties Cohesion (peak and residual) Direct Shear Test/UU Triax Friction angle (peak and residu 310 ial Test (washbored + spt) al) 6.0 Hydrogeological Analysis (for both BEM mine and the proposed greenfield project) 6.1 To analyse the data of actual groundwater measurement and the result of pumping tests to generate permeability and to determine type of aquifer.
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