Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 X 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan
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Environmental Impact Assessment Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan Executive Summary 1 Introduction Sand concession has been given to Permerbadanan Menteri Besar Negeri Sembilan or Menteri Besar, Negeri Sembilan (Incorporated) (MBI) which is a strategic development company wholly owned by the State Government of Negeri Sembilan, Malaysia. The agent appointed by MBI in charge of buying and selling the sand is Plenitude Vista Sdn Bhd. The mined sand will be sold for fill at reclamation site intended forJimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan Taisei Corporation is the contractor in charge of the sand mining planning and operation while Van Oord (Malaysia) Sdn Bhd has been appointed as the Trailer Suction Hopper Dredger (TSHD) provider to extract sand. 2 Purpose of Environmental Impact Assessment (EIA) The proposed project falls within the list of prescribed activity under Item 8(b) of the Environment Quality (Prescribed Activities) (Environmental Impact Assessment) Order, 2015 which requires an EIA to be carried out and submitted to Department of Environment (DOE) for approval before project commencement. 3 Statement of Need The project is required as to provide suitable sand for the reclamation of land footprint for project Jimah 3B, Proposed 2 x 1000 MW Supercritical Coal-Fired Power Plant at Mukim Jimah, Daerah Port Dickson in Negeri Sembilan. The volume of sand expected to be dredged is estimated at 3.0 million m3. Chemsain Konsultant Sdn.Bhd ES-1 CK/503/5181/14 Environmental Impact Assessment Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan 4 Project Location The location of the sand source area is shown in ES/RE1 and coordinates of the approved sand source area summarized below. The distance between the Point 6 (the nearest point to the border of federal water) of the proposed site and the border of the state/federal waters is approximately 330 m. Coordinates of the Sand Source Area Point Latitude Longitude 1 2° 32’ 06” 101° 44’ 17” 2 2° 32’ 18” 101° 44’ 30” 3 2° 31’ 30” 101° 45’ 00” 4 2° 31’ 22” 101° 45’ 10” 5 2° 30’ 24” 101° 44’ 42” 6 2° 31’ 00” 101° 44’ 30” 7 2° 31’ 18” 101° 44’ 44” 5 Project Description For this project, the scope is mainly on sand mining. Sand dredged from the sand bank will be fully deposited at the reclamation area of Jimah 3B footprint. No unsuitable material is expected from sand mining activities. The sand extraction activity will involve dredging of about 3.0 million m3 of marine sand at the sand borrow area using one unit of dedicated TSHD. The marine sand will be contained in the hopper of the TSHD and then be transported to the proposed power plant site for hydraulic filling of the reclamation area. The typical TSHD to be used has a holding capacity of about 32,000 m3. The seabed will be dredged to the average depth of 1.5 m. A certain degree of overflowing will be allowed where necessary which means that when the sand in the dredged sand / water mixture settle in the hopper due to gravity forces, excess water is discharged via an adjustable overflow system. The extraction of sand, transportation to the reclamation location, discharging of sand from the dredge and the vessel returning to the sand mine site will occur in a six hour cycle, 24 hours per day over a period of 70 days. Continuous operation of the vessel will depend on weather conditions and other storm event. Chemsain Konsultant Sdn.Bhd ES-2 CK/503/5181/14 CHEMSAIN KONSULTANT SDN. BHD. LEGEND: 241215'&5#0&$14419 PERLIS KANGAR THAILAND ALOR SETAR .#76%*+0#5'.#6#0 Pulau KOTA BHARU 5176*%*+0#5'# Langkawi KEDAH GEORGE TOWN KUALA PULAU PERAK TERENGGANU PINANG KELANTAN TERENGGANU IPOH KUANTAN PAHANG SELANGOR KUALA LUMPUR Pulau SHAH ALAM NEGERI Tioman SEMBILAN SEREMBAN MELAKA JOHOR JOHOR BAHRU SINGAPURA 5174%' - Google Earth Data c 2013 Cnes/Spot Image Imagery Date 12/16/2009 SAND SOURCE LOCATION '54' Environmental Impact Assessment Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan 5.1 Project Activities 5.1.1 Sand Sourcing Cycle Phase Activity Description Diagram I Loading Loading takes place during sand sourcing. The mined materials will contain a mixture of sand and water, which is pumped into the hopper (refer Diagram 1). When mixture reaches the overflow stage demarcated at a certain level, the Diagram 1: Loading hopper with majority of sand will settle in sand hopper, while the fine particles together with the water will leave the hopper via overflow (refer Diagram 2). TSHD will load until it reaches it dredge mark (a fixed allowed draught). Diagram 2: Loading (overflow) When the hopper is filled, mining is stopped and the suction tubes placed on the deck of the ship, TSHD is ready to sail to the unloading area. The estimated time required to fill up the hopper is 2.5 hour. II Sailing Full When the draghead is out of the water, TSHD velocity is increased to sail to the reclamation area (refer Diagram 3). The estimated time required to sail to the reclamation area is 0.5 hour. Diagram 3: Sailing full (loaded) III Discharging Upon arrival at the designated reclamation area, the speed of TSHD will be reduced. TSHD will then be carefully positioned at a location within a certain distance from the reclamation area. At this location a floating Chemsain Konsultant Sdn.Bhd ES-3 CK/503/5181/14 Environmental Impact Assessment Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan Phase Activity Description Diagram pipeline will be connected to Diagram 4: TSHD discharging the bow coupling of the using floating pipeline vessel prior to unloading (refer Diagram 4). The floating pipeline is connected to a system of land-based pipelines. These pipelines will be extended and repositioned in such a way that the sand can be placed at desired location. The estimated time required to discharge the loading is 2.5 hour. IV Sailing When the load is pumped Empty ashore, TSHD will return to its sand borrow area and a new cycle starts. In general TSHD sails empty, back to the sand borrow section. There is only some residual water and/or load left in the Diagram 5: Sailing empty hopper (refer Diagram 5). The estimated time required to sail empty back to the sand borrow area is 0.5 hour. Source: G&P Water & Maritime Sdn Bhd, 2015 5.2 Manpower The number of working crew on board the TSHD at any one time is 20 in 2 shifts of 12 hours per shift. The TSHD will be able to accommodate a maximum of 46 crews. 5.3 Project Implementation Schedule The sand extraction activity at this sand borrow area will commence from first week of November to last week of December 2015. In order to ensure maximum performance of the TSHD, the sand extraction activity will conducted on a 24-hour basis. 6 Project Option An area off Kuala Lukut of Port Dickson (Option 2) has been proposed by sand concession World Task Sdn Bhd. The site (Option 2) was not chosen as the layer of silt and sand present Chemsain Konsultant Sdn.Bhd ES-4 CK/503/5181/14 Environmental Impact Assessment Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan is not suitable for project use having higher silt composition than sand. The sand volume at the area is estimated at 1.6 million m3 which is insufficient for project use requiring a fill volume of 3.0 million m3. The Cutter Suction Dredger (CSD) is used mainly for capital dredging in harder soil which has to be removed in thick layers. The TSHD is often used for where a limited thickness of softer material has to be removed and reclamation and disposal sites are available at variable distances. Therefore, it is considered that a TSHD will be the most efficient dredge for this type and scale of project. 7 Existing Environment 7.1 Bathymetry The minimum depth sounded within survey is 6.2 m while the maximum is at 37.0 m. From the survey, there is no bathymetry survey hazard except for fishing net and rock dumping found throughout the survey area. 7.2 Seabed Sediments A total of 10 offshore boreholes were initiated and major composition found within the soil layer based on the corresponding depth is as summarized below. Depth Range Gravel Sand Max Diameter Sample (m) (%) (%) Silt (%) Clay (%) (mm) PBH-1 2.80 - 3.00 0 99 1 1 3.35 PBH-2 3.40 - 3.60 0 15 57 28 1.18 PBH-3 0.90 - 4.30 0 1 - 99 1 - 73 1 - 26 0.425 - 1.18 PBH-4 0.90 - 5.80 0 - 21 71 - 97 1 - 7 1 - 3 2.00 - 6.70 PBH-5 1.80 - 5.10 2 - 24 64 - 92 6 - 12 6 - 12 4.75 - 9.50 PBH-6 0.90 - 2.80 1 - 2 95 - 97 1 - 4 1 - 4 3.35 PBH-7 0.40 - 2.60 0 - 3 97 - 100 0 0 2.00 - 4.75 Chemsain Konsultant Sdn.Bhd ES-5 CK/503/5181/14 Environmental Impact Assessment Executive Summary Proposed Sand Source Concession Off Coast of Port Dickson for Jimah East Power 2 x 1,000 MW Coal Fired Power Plant Project, Negeri Sembilan PBH-8 0.60 - 3.30 0 - 7 92 - 98 1 - 2 1 - 2 2.00 - 6.70 PBH-9 0.60 - 3.30 1 - 29 70 - 94 1 - 5 1 - 5 3.35 - 9.50 PBH-10 0.00 - 3.50 0 - 2 71 - 96 2 - 19 2 - 10 3.35 - 4.75 7.3 Meteorology The Malacca Strait lies within the equatorial region of low atmospheric pressure and has a typical tropical climate.