Supply of sand for hydraulic stowing

1. Subject of the order. 1.1. The subject of the order is the sale and delivery of a maximum of 35,000 tons of stowing sand for hydraulic stowing. 1.2. The delivered stowing sand must meet the quality requirements contained in the standard PN-93/G-11010 or equivalent solutions. If the Contractor offers the supply of sand referring to solutions equivalent to those contained in the standard PN-93/G-11010, instead of this standard, they are obliged to indicate these solutions in the offer and attach documents indicating the equivalence of the offered solutions. 1.3. The delivered sand must not contain visible impurities and plant parts, and in winter, the sand must be in a loose state. 1.4. The Ordering Party will consider the following sand parameters as equivalent when other sands with a dominant mineral component, e.g., carbonate, granite, meet all the requirements set for typical quartz sands, and in particular meet the requirements: 1) water permeability – at least 0.007 cm/s, 2) content of grains with dimensions below 0.1 mm – at most 10%, 3) largest grain dimension (agglomerated) – 60 mm, 4) bulk density – at least 1.3 kg/dm3. 1.5. The sand delivered by the Contractor will serve the Ordering Party as raw material for the execution of stowing mining works in the "Wieliczka" Salt Mine and will be transported to the underground workings of the "Wieliczka" Salt Mine using a hydrotransport system. 1.6. For the delivered sand, the Contractor is obliged to possess documentation of tests performed by a scientific unit within the meaning of art. 2 point 9 of the Act of April 30, 2010 on the principles of financing science, confirming that the sand meets the requirements of quality class I, in accordance with the standard PN-93/G-11010 or equivalent solutions. 1.7. The tests referred to in point 3.5 should be supported by geological documentation in the form of an information card of the stowing sand deposit along with a decision approving the geological documentation of the stowing sand deposit. 1.8. The Contractor is obliged to provide the Ordering Party with the documentation referred to above upon request, within 7 days from the date of receipt of the written request. The documentation may be presented as a copy confirmed for compliance with the original by the Contractor. Upon request of the Ordering Party, the Contractor is obliged to make the originals of the documentation available for inspection. 1.9. The Contractor undertakes to enable the Ordering Party to carry out quality control of the sand delivered to the Ordering Party on their own, covering, among other things, whether it meets the requirements of quality class I in accordance with the standard PN-93/G-11010 or equivalent solutions. 1.10. In case the sand does not meet the aforementioned requirements, the Ordering Party will be authorized to withdraw from the contract. 2. Delivery conditions. 2.1. Conditions for the purchase and delivery of sand: 1) Sand deliveries should be made by tipper trucks or semi-trailer tipper trucks at the Contractor's expense. 2) Loading and unloading of sand should be done at the Contractor's expense. 3) Maximum daily sand delivery quantity: up to 700 tons. 4) Delivery location: "Wieliczka" Salt Mine S.A., 32-020 Wieliczka, ul. Jedynaka 3. 5) Stowing sand should be delivered on working days from Monday to Friday between 6:00 AM and 2:00 PM. Deliveries between 2:00 PM and 8:00 PM on working days from Monday to Friday are allowed upon express request of the Ordering Party, presented with a week's notice in the delivery schedule referred to in point 6. 6) Sand deliveries will be made based on weekly schedules, which will be prepared by the Ordering Party and sent electronically to the Contractor, at least 2 days in advance. In case of failure of the stowing unit, the Ordering Party reserves the right to cancel the delivery with 1 day's notice. 7) Individual deliveries of stowing sand must have a delivery note specifying: sand class, sand quantity, bulk density, registration number...