Design Engineer
HBK Contracting Company W.L.L.Doha, State of Qatar
Total years of experience :14 years, 2 Months
His biggest project involvement was at the Mega Reservoir Project - Umm Slal Package which consists of construction of five reinforced concrete reservoirs with a total effective capacity of 485 Million Gallons and a Pumping Station with a capacity to deliver around 10, 000 L/s. His tasks involved design verification (hydraulics), review of tender/design drawings, technical specifications, coordination with specialized sub-contractors and generation of shop drawings.
He was also involved in the construction of Lusail Utility Structures (CP06C) where he helped out the construction team - from providing technical support such as design checks, generation of shop drawings, to testing & commissioning of pump stations.
His last project involvement in HBK was the 40, 000-seat Ras Abu Aboud Stadium Project (2022 FIFA) where he looked after a team in preparing the stormwater design for the precinct utilities infrastructures for the 40, 000-seat Ras Abu Aboud Stadium Project (2022 FIFA).
Other Duties Performed:
• Review of Tender Drawings, Technical Specifications and Bill of Quantities and raised Tender Queries.
• Pipeline hydraulic analysis and design of proposed alternative solutions.
• Lead a team in developing pipework shop drawings for the main pumping station and valve chambers based on design drawings ensuring suitability, constructability and functioning of the system.
• Technical coordination with specialized subcontractor, e.g. Surge Analysis ensuring having correct input data and analysis/results as per Contract requirements.
• Design coordination with other disciplines within the Project Team to ensure consistent deliverables.
• Attending technical meetings with clients/ consultants as required.
His biggest project involvement was at the Mega Reservoir Project - Umm Slal Package which consists of construction of five reinforced concrete reservoirs with a total effective capacity of 485 Million Gallons and a Pumping Station with a capacity to deliver around 10, 000 L/s. His tasks involved design verification (hydraulics), review of tender/design drawings, technical specifications, coordination with specialized sub-contractors and generation of shop drawings.
He was also involved in the construction of Lusail Utility Structures (CP06C) where he helped out the construction team - from providing technical support such as design checks, generation of shop drawings, to testing & commissioning of pump stations.
His last project involvement in HBK was the 40, 000-seat Ras Abu Aboud Stadium Project (2022 FIFA) where he looked after a team in preparing the stormwater design for the precinct utilities infrastructures for the 40, 000-seat Ras Abu Aboud Stadium Project (2022 FIFA).
Other Duties Performed:
• Review of Tender Drawings, Technical Specifications and Bill of Quantities and raised Tender Queries.
• Pipeline hydraulic analysis and design of proposed alternative solutions.
• Lead a team in developing pipework shop drawings for the main pumping station and valve chambers based on design drawings ensuring suitability, constructability and functioning of the system.
• Technical coordination with specialized subcontractor, e.g. Surge Analysis ensuring having correct input data and analysis/results as per Contract requirements.
• Design coordination with other disciplines within the Project Team to ensure consistent deliverables.
• Attending technical meetings with clients/ consultants as required.
9 March 2009-20 July 2012
Clark Water Corporation signed a Concession Agreement with Clark Development Corporation or CDC (a government-owned company that operates and manages the development of the Clark Freeport Zone) to operate and improve the water and wastewater facilities in the 4, 400-hectare Clark Freeport Zone (former United States Air Force base in the Philippines and now transformed into a center for industrial/manufacturing, tourism, airport, hotels and casinos). Around 80% of water consumptions are from industrial consumers, e.g. Texas Instruments, Yokohama, L&T International, Phoenix Semiconductor Philippines Corp., etc.
He was positioned under the Operations and Technical Services Department with direct reports to the Department Manager. His primary duty as Planning and Design Engineer was to timely update the master development plan with an objective to ensuring that existing and future water demands will be met. This demanding role includes maintaining and updating of water network models, water sources and wastewater treatment programming, preparing project documents for tendering or implementation, supervision/project coordination with contractors involved in design consulting, water resource studies, and efficiency improvement of various facilities.
One of the key projects he handled includes the development and commissioning of 5 production wells (of around 25-30 l/s yield for each well) with around 6 kilometers transmission mains and Waste Water Treatment upgrade (some additional 10, 000 cu.m./day treatment capacity), with installation of around 5 kilometers new sewer pipeline network and refurbishment of an old foul sewer pumping station - all for a Korean semiconductor facility that was put up in the Freeport Zone).
Key Duties Performed:
• Project coordination with contractors involved in detailed design consulting, water resource studies and efficiency gathering such as test well drilling, soil sampling and water sampling at source.
• Maintaining and updating the hydraulic models
• Supervise development of groundwater wells and calculate for potential well yield from the data obtained from aquifer pumping tests.
• Monitoring project implementation progress, validating/re-measurement and negotiating variations and claims, and preparation of project completion certificates.
• Water demand and wastewater generation forecasting used in establishment of water source and wastewater treatment programs, which are essential in determining annual capital expenditures.
• Preparing project documents, drafting engineering drawings, cost estimates and drafting technical specifications for project tendering/implementation.
• Preparing business cases for proposed projects and determining project benefit metrics to analyze project’s feasibility
• Provide technical assistance, such as hydraulic simulations of operation regimes as required by the Operation and Maintenance and Network teams.
Thus, through this water utility company, he gained a considerable experience in the planning and operation side of water and wastewater systems.
His engineering experience started with EDCOP as a Junior Civil Engineer with the Water Resources Department. EDCOP was one of the first engineering consultancies in the Philippines established in 1955. They are known for having undertaken various specialized projects in power, water resources, civil and agriculture infrastructures.
Leo have had diversified project involvement with EDCOP. During his first 6 months he had been involved in Rodriguez Water Treatment Project (100 MLD treatment capacity) of the Manila Water Corporation (MWCI). Having been site-based, he supervised baseline data gathering for the Environmental Impact Assessment (EIA) which he supervised most of the activities including hydrographic surveys of the La Mesa reservoir - re-establishment of reservoir bathymetry and quantifying reservoir sedimentation during that time.
He also performed statistical flood frequency analysis and reservoir routing using numerical models for the Atlas Bulk Water Supply Project. Alongside, he was part of the design team for water supply project for the City of San Fernando Water District. In this water supply project, he performed water demand projections, created the hydraulic model using the EPANET software, led a team in preparing pipeline design drawings and write for the hydraulic section of the design report.
He was given a project coordination role for the Hydrogeological Study for Mindanao-1 Geothermal Project. This was a small sub-contracted project for the Philippine National Oil Corporation (PNOC) to obtain baseline data for the existing waterways within the project area. He supervised/conducted river discharge measurements. He also coordinated with environmental scientists involved in the project in the preparation of the report.
In 2008, EDCOP was commissioned by the Metropolitan Waterworks and Sewerage System (MWSS) to undertake a study on Rehabilitation of the Angat-Umiray Tunnel Outlet to the Macua River from the damage suffered from a strong typhoon in 2004. Macua River was one of the tributary rivers of the Angat River/ Reservoir. The tunnel was 4.3 meters in diameter and 13 kilometers long drilled through the mountains of Sierra Madre sourcing out raw water from the Umiray and Sumag Rivers. His specific role for the study was to determine the flood levels for the long-term rehabilitation of the outlet structures which was equivalent to 1, 000- year flood, through a flow simulation modeling - the software called MD_SWMS developed by the U.S. Geological Survey’s National Research Program, was used on the simulation.
In the last quarter of 2008, EDCOP was commissioned by San Miguel Bulk Water Company to update previous feasibility studies (1979 and 1997) done for the implementation of Laiban Dam Bulk Water Supply and Hydropower Generation Project under BOT or joint venture. He performed a finite element groundwater analysis of the software package to determine pore pressures for the stability computations.
Key Duties Performed:
• Project coordination, organizing field investigations and directing technicians or surveyors in establishing baseline data gathering, such as confirmatory waterways discharge measurements, field/hydrographic surveying, aquifer pumping tests, and water sampling.
• Conducting geotechnical investigations
• Analyze structural stability of dam embankment for seismic loading.
• Reviewing design specifications and engineering drawings in unit price analysis to estimate unit costs of installation/activity to determine total project cost essential for budget management and assessing project feasibility.
• Executing design calculations for hydraulic structures, hydraulic modelling, rainfall data augmentation, flood frequency analysis and streamflow generation modelling.
• Drafting design drawings, technical specifications and writing of design reports.