Prior Information Notice For Related Mining And Quarrying Products – Structural Backfill - Supply And Delivery - Ap 1000 Project

Prior Information Notice For Related Mining And Quarrying Products – Structural Backfill - Supply And Delivery - Ap 1000 Project. The Structural Backfill Is Required To Adhere To Strict Quality Requirements. The Composition Of The Structural Backfill Shall Be Either Mixtures Of Hard, Sound, Durable Silica Sand And/Or Sand-Gravel Blends, Or Granitic Or Basaltic Material From Either Pit-Run Or Quarry (Crushed Rock) Sources Which Meet The Required Grain-Size Distribution. The Material Shall Be Medium To Well Graded Per Pn-En Iso 14688-2. The Structural Backfill Shall Be Devoid Of Debris, Calcareous Sands, Clay Fines, Plastic Fines, Friable Particles, Or Other Deleterious Materials, And The Fines Content Shall Be Less Than 15 Percent. The Structural Backfill Will Be Devoid Of Rocks Or Stones Larger Than 37.5 Millimeters In The Greatest Dimension. Sieve Size (Mm)Per Iso 3310-1 %Passing Min Max 37.5 100 - 20 70 - 10 50 - 4.75 30 100 2 20 95 0.63 12 80 0.2 5 50 0.063 0 15 The Estimated Amount Of Structural Backfill By Volume Is 1,100,000 M3 (1.1 Million Cubic Meters) For All Three Units (With An Average Of 370,000 M3 Per Unit). The Estimated Quantities Of Structural Backfill Are Subject To Change. Project Requires Each Company To Have The Capacity Through Company Projections Of Supplying And Are Delivering At Least 1/3 (Or 370,000 M3) Of The Required Amount Of Structural Backfill In A Year For Delivery In Either 2028, 2029, Or 2030. After Completion Of The Prequalification Process And Prior To Issuing The Request For Quotation And As Part Of The Qualification Process, The Structural Backfill Company Shall Supply In March 2026 And April 2026 Approximately Twelve 20-Liter (5.3-Us Gallon, Or 0.02 Cubic Meters) Buckets Of Soil, Or Approximately 425 Kilograms For Purposes Of Laboratory Testing To Validate If The Structural Backfill Is Acceptable For Project Use. The Laboratory Testing Shall Be Performed In 2 Phases: • Phase 1: Preliminary Testing For Index Properties Of Soil, Where 13 Tests Will Be Conducted To Confirm Material Suitability As A Structural Backfill. Bechtel Will Then Review And Approve The Test Results And Select Samples For The Phase 2 Laboratory Testing. • Phase 2: Advanced Testing Of The Soil, Where 5 Tests Will Be Conducted To Assess Compacted Structural Backfill Behavior. Selection Of Structural Backfill Samples Shall Be Coordinated By Bechtel. Shipment And Delivery Of Structural Backfill Samples To The Laboratory Location Shall Be Coordinated By Bechtel’S Selected Laboratory Testing Subcontractor. Cost For The Backfill Samples, Packaging Samples (Ready For Shipment) And Loading Samples Onto A Truck Shall Be Managed By The Structural Backfill Company At No Cost To Bechtel. Laboratory Testing Is Forecasted To Complete By The End Of 2026. The Project Plans To Issue A Request For Proposal For Supply And Delivery Of The Structural Backfill In November 2026 With Forecast Award In March 2027.