Sand Extraction Agreement
Degradation of coarse-grain floodplains from and along streams causes geomorphic, hydrological and biotic changes. In addition to direct changes, the bald and irregular topography of the landscape in the event of flooding is subject to change. Changes in pattern and position include increased bank erosion, lateral migration, and channel displacement when the river aborts into the gait pits. Degraded spans can develop by recovering materials along the circumference of the canal or by capturing the anthropogenic shape of a pit by migration or avulsion (Mossa and Marks, 2011). Degradation, which can extend to a cut of several metres, is a common reaction to degradation of the canal bed (Kondolf, 1994); Davis et al., 2000; Marston et al., 2003; Uribelarrea et al., 2003). Degradation in and around mined foothills leads to reduced flood levels, but at some distance downstream of degraded areas, agradation can increase the frequency and size of overconsequence currents through excessive sediment inputs (e.g. B Gilbert, 1917; Brim-Box and Mossa, 1999). Look at the current cost of a barrel of oil. How do “true” costs differ from the market price? How could these “real” costs be recovered or recovered to pay for some of the external oil damage? What could be the impact of the introduction of these payback activities on the demand for oil sand oil? Figure 15. The photo on the left shows that gravel extraction in the flood zone of the Amite River creates different piles of storage, compartments, pits and paths for the canal to be diverted during the flood of April 1983.
On the right there are large ruts and compartments (in the center) created by the extraction of sand and gravel in the meadows of Tangipahoa (Photo: J. Mossa). The North Sea is one of the busiest maritime areas for shipping, fishing, oil and gas exploration, sand mining and offshore wind energy. In summer, tourism is popular on the beaches and on the boats. Overall, a widely used sea, with effects related to it, such as marine pollution. For 25 years, monitoring of marine litter has been underway in the North Sea region. Between 1992 and 1997, marine litter on the Swedish North Sea coast was estimated at 43,000 m3. In 2000, the OSPAR Commission began to develop a single monitoring methodology which was completed in 2010.
This methodology and the associated instruments make it possible to compare in a uniform way the evolution of marine litter on the coasts of the OSPAR area (www.ospar.org/documents?v=7260). The North Sea Foundation is one of the organizations that conducts the annual Ospar Marine Litter Monitoring. This is done on specific sites on 4 different beaches. A distance of 100 m is measured in detail in each place, with the count of all waste. In addition, over a distance of 1 km, all items >50 cm are counted. All information is uploaded to a database. Recycling glass to stained glass sands has shown properties similar to those of natural sand, without losing strength….