By prefectural decree dated November 28, 2025, the prefect of Ariège entrusted ADEME with various missions: - Examine the feasibility of a controlled collapse of the “Old Works” zone as well as the central part below level using a caving technique; - Exhaustively list and qualify meltdowns, collapses, uprooting niches and other landslides; - Analyze the hydrological and hydrogeological functioning of the quarry, particularly in the “Recent Works” sector; - Identify the openings likely to function as outlets in the event of flushing of water contained in the quarry (precise topographic identification); - Identify the feasibility and constraints (topography, regulatory works, etc.) linked to the creation of passive drainage making it possible to limit the water level in the quarry areas sufficiently low to eliminate the risk linked to flushing; - Evaluate the quantities of water likely to be expelled with several scenarios of potential collapse and therefore the magnitude of the hazard in the “Recent Works” area; - Identify downstream issues (housing, traffic routes, etc.) and quantify the potential impacts for each of the scenarios mentioned above; - Evaluate the feasibility of implementing structures capable of protecting the issues identified above (nature, location, sizing and summary costing). The purpose of this consultation is to select the service provider responsible for carrying out part of the missions provided for under this prefectural decree.

The Other organizations in France from Europe region had released this tender for By prefectural decree dated November 28, 2025, the prefect of Ariège entrusted ADEME with various missions: - Examine the feasibility of a controlled collapse of the “Old Works” zone as well as the central part below level using a caving technique; - Exhaustively list and qualify meltdowns, collapses, uprooting niches and other landslides; - Analyze the hydrological and hydrogeological functioning of the quarry, particularly in the “Recent Works” sector; - Identify the openings likely to function as outlets in the event of flushing of water contained in the quarry (precise topographic identification); - Identify the feasibility and constraints (topography, regulatory works, etc.) linked to the creation of passive drainage making it possible to limit the water level in the quarry areas sufficiently low to eliminate the risk linked to flushing; - Evaluate the quantities of water likely to be expelled with several scenarios of potential collapse and therefore the magnitude of the hazard in the “Recent Works” area; - Identify downstream issues (housing, traffic routes, etc.) and quantify the potential impacts for each of the scenarios mentioned above; - Evaluate the feasibility of implementing structures capable of protecting the issues identified above (nature, location, sizing and summary costing). The purpose of this consultation is to select the service provider responsible for carrying out part of the missions provided for under this prefectural decree. with tender notice no. DA2026000792 published on 09 Jun 2026. The tender expired on 17 Jul 2026. This tender is sourced from Marches publics and is eligible for suppliers interested in Feasibility study, advisory service, analysis, Project and design preparation, estimation of costs, Geotechnical engineering services, Geological consultancy services, Geology, oceanography and hydrology services. Interested bidders can obtain further information including complete bid documents or ways to participate by registering on Tender Impulse and referencing via Tender Impulse ID 13260506.