DEPARTMENT OF ENVIRONMENT AND NATURAL RES PENRO, SORSOGON Tender

Description Project Title : Construction Of Small Water Impounding System (swis) - Spring Development Fy 2025. Location : Barangay Busay, Magallanes, Sorsogon Water Storage Tank Capacity : 20.0 Cubic Meters (composed Of One Spring Box And Two (2) Intake Boxes, Each With A Water Capacity Of 10.0 Cubic Meters Project Duration: 60 Days Scope Of Work 1. The Project Structure Consists Of One Spring Box And Two Intake Boxes, Each With A Capacity Of 10 Cubic Meters, Are Proposed For Construction With A Total Volume Of 20 Cubic Meters, Delivery Pipes, And Pe Pipes For Distribution By Gravity. These Spring Boxes And Reinforced Concrete Water Storage Tanks Will Be Strategically Placed Within The Vicinity And In Proximity To The Service Areas Or Plantation Sites. 2. That The Site Is Within The Forest Or Public Land. 3. Prior To Construction Coordination With Stakeholder Beneficiaries Shall Be Conducted. 4. Forms Shall Conform To The Shape, Lines And Dimensions Shown On The Design. They Shall Be Substantial And Designed To Resist The Pressure And Weight Of The Concrete. (please See Attached Bill Of Quantities, Program Of Works, And Approved Plan/design) 5. Implement Erosion Control Measures Around The Spring Box Site. 6. Ensure The Spring Box Design Allows For Efficient Water Collection, Filtration, And Protection From Contaminants. 7. The Irrigation Water Shall Be Free Of Sediments And Other Foreign Matter. 8. That A Good Quality Mechanical Gate Valve With A 2-inch Diameter Shall Be Installed For Spring Box And Each Intake Box. 9. That To Achieve Watertight Joints Between Pvc And Fittings, Solvent Cement And Glue Are Applied At The Connections, While Teflon Should Be Used Around The Treaded Ends Of Pvc Pipes, Fittings Or Accessories. 10. Additional Materials, If Any In Pipe And Compression Fittings, Tee, Paint, Etc. Will Be Directly Charged To Overhead, Contingencies & Miscellaneous (o.c.m.) (15% Of Dc) Cost Indicated In The Bill Of Quantities. 11. All The Surfaces Of The Spring And Intake Box Will Be Plastered/finished With 1:2 Portland Cement Mortar Mixed. This Is Required To Provide An Even Dense Surface Of Uniform Color, Free From Marks, Aggregate, Pockets, Honeycomb, Or Other Imperfections. 12. That The Components Of The Pipe Network Are Composed Of Seven (7) Pieces/rolls Of Hdpe Pipe 2" Dia. Sdr11 With A Length Of 60 Meters By Each Roll, Equivalent To Four Hundred Twenty(420) Meters And Twenty-eight (28) Pieces/rolls Of Pe Pipes 1" Dia. (100m) Sdr17 Equivalent To Two Thousand Eight Hundred (2,800) Meters Distribution Pipes. 13. That Orifice (type Of Emitter) Shall Be Used To Break And Convert Into Drop-by-drop Flow. This Will Be Barbed Into The Lateral Wall With A 4-meter Lateral Spacing Of The Pipes. The Contractor Shall Ensure That All Emitters Are Functioning By Placing The Pipes In A Proper Contour Through The Use Of An A-frame Technique. 14. The Construction Includes The Following Activities, Such As: • Site Works Includes Excavation, Backfill, Installation Of Delivery Pipe, Construction Of Four (4) Spring And Four (4) Storage Tank (10.0 Cu.m. Cap.), And Installation Of Distribution Pipes. • Reinforced Concrete And Masonry Works Will Use Class A (1:2:4) Concrete Mixture And Standard 12mm, 16mm, And 10mm Deformed Steel Bars As Specified In The Approved Detailed Plan And Program Of Works. • All Plumbing Materials (pipes And Accessories) To Be Used Shall Be In Accordance With The Plan, Specifications, And Program Of Work. • The Complete Spring Development Project Shows That The Reinforced Concrete Spring Box Shall Be Connected To A Reinforced Concrete Water Storage With A High-density Polyethylene (hdpe) Delivery Pipe And From The Water Storage Tank To The Service Area Of The Plantation Site With A Polyethylene (pe) Distribution Pipe. • Delivery Pipes And All Distribution Pipes Shall Be Buried In The Soil.