Tenders Are Invited For Soil – Framework Agreement For The Supply Of Mixed Grain Soil

Soil – Framework Agreement For The Supply Of Mixed Grain Soil. Framework Agreement For The Delivery Of Up To 378,000 T (Corresponds To The Required Requirement Of 180,000 M³ With A Conversion Factor Of 2.1 T/M³) Of Mixed-Grain Soil For The Storage Layer Of The End Cover Of The Dänkritz 2 Industrial Settling Plant (Iaa). The Estimated And Maximum Quantities Are Specified In The Tender Documents. The Following Quality Requirements Apply To The Material To Be Delivered: - Mixed-Grain Soil With Homogeneous Properties Throughout, I.E. Each Individual Delivery Must Meet The Quality Requirements Listed Below. - Consistency Of The Cohesive Components: At Least Stiff (Ic ≥ 0.75) - The Grain Distribution Curve Of The Delivery Material Must Have A Consistent Course, I.E. No Failed Grain Size. The Grain Distribution Of The Delivery Material Must Lie Between The Lower And Upper Envelope Curves Defined Below And Must Be Ensured Uniformly Over The Entire Delivery Period. Coarse Gravel And Stone Fractions ≥ 63 Mm Contained In The Material Must Be Crushed Or Sorted Out At The Extraction Site. (See Appendix 1 - Specification For Storage Layer Material Of The End Cover Iaa Dänkritz 2) Specification: Envelope Curve Ø ≤ 0.006 Mm: Lower 4% - 18% Upper, Ø ≤ 0.06 Mm: Lower 16% - 43% Upper, Ø ≤ 0.2 Mm: Lower 29% - 72% Upper, Ø ≤ 0.6 Mm: Lower 45% - 93% Upper - Cohesion C In Kn/M² According To Din 18137-T3: ≥ 3.0 - Angle Of Friction Φ In Degrees According To Din 18137-T3: ≥ 22.5 - Water Permeability Coefficient Kf According To Din 18130-1: 10-6 M/S ≥ Kf ≥ 10-7 M/S O With Degree Of Compression Dpr In % According To Din 18127: 90% ≤ Dpr ≤ 95% - Specific Activity: Ra-226 In Bq/G According To Din Iso 11465: < 0.2 - Uranium Content Unat. In Mg/Kg According To Din Iso 11465: <16 - Usable Field Capacity Nfk In Mm/M: >135 - Pollutant Content According To Laga Tr Boden 2004: ≤ Z0 (Table Ii 1.2-2 And 2-3) - Precautionary Values ​​According To Bbodschv Appendix 2 (4.1 And 4.2) Compliance