Accumulation of pressures that can cause the entry of pollutants into the North Atlantic Demarcation (EM NOR PRE Contaminants)
Description
The cumulative pressure analysis has been carried out taking into account all polluting sources together. That is to say, no individual analysis has been carried out per pollutant, nor has it been taken into account whether the discharge is intentional or accidental, but the areas with the highest probability of contributions of polluting loads in the Demarcation have been identified. To do this, first a selection of 5X5 minute meshing cells has been made, based on the following criteria:
- Those containing a monobuoy
- Those containing a hydrocarbon platform
- Those that are less than 500 m from a landfill of dredged material
- Those that coincide with EMEP cells with higher loads of hazardous substances (those that add up to 50% of the total dioxin contamination and 25% by heavy metals, starting from the highest to the lowest sum)
- Those that are less than 5 km from any complex of the PRTR register that has no obligation to report through this register.
- Those that are less than 2 km from the mouth of a river
- Those less than 2 km from municipal solid waste landfills
- Those that are less than 5 km from mining operations greater than 100 Ha
- Those that are less than 2 km from sewage treatment plants without obligation to inform according to the PRTR regulation
- Those that are less than 2 km from a port without traffic of dangerous goods
- Those that are less than 5 km from complexes of the PRTR register with an obligation to report through this register (includes industrial facilities and treatment plants)
- Those that are less than 2 km from the river whose loads are reported to the OSPAR agreement (those that add up to 85% of the total pollutant load for the Spanish OSPAR zone have been selected, starting the sum from highest to lowest, for each of the elements)
- Those less than 2 km from a transitional river or body of water that does not meet the chemical status (as indicated in the river basin plans)
- Those that are less than 5 km from a port with dangerous goods traffic
- Those that overlap with a coastal water body that does not meet the chemical status (as indicated in the river basin plans)
Once all the elements have been integrated, the index has been calculated using the following formula:
ÍNDICE DE CONTAMINACIÓN= 0,1*[monoboyas + plataformas] + 0,25*[vertederos material dragado + deposiciones atmosféricas con elevadas concentraciones de metales o POPs + instalaciones industriales que reportan al PRTR pero sin obligación de informar + EDARs que no reportan al PRTR + desembocaduras ríos + vertederos + minas] + 0.5* [puertos que no transportan mercancías peligrosas] + 0.75*[ríos mal estado químico ó aguas de transición en mal estado químico + complejos PRTR reportados + ríos OSPAR con cargas elevadas] + 1*[aguas costeras en mal estado químico + puertos mercancías peligrosas]
The result is a mesh of probabilities of entry of loads of dangerous substances that can therefore indicate areas with potential risk of contamination. The following ranges have been selected for the cells:
Very High: Major 3,25 / High: 2.25 to 3.25 / Medium: 1 to 2.25 / Low: 0.35 to 1 / Very Low: minor 0.35
Resources
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http://remro.cedex.es/WebCepyc/Noratlantica/NContaminacionMallado.rar |