Stockholm Convention on P ersistent Organic Pollutants. UNEP Chemicals, 11-13 chemin des Anémones, CH-1219 Châtelaine (GE), Switzerland. Stockholm Convention on POPs. International action on persistent organic pollutants (= POPs) facilitated by UNEP Chemicals
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UNEP Chemicals, 11-13 chemin des Anémones, CH-1219 Châtelaine (GE), Switzerland
Pesticide Industrial By- Chemical product
Hexachlorobenzene (HCB) x x
Polychlorinated biphenyls (PCB) x x
Polychlorinated dibenzo- p-dioxins (PCDD) x
Polychlorinated dibenzofurans (PCDF) x
Goal = elimination of production and use of all intentionally produced POPs
Each Party shall (Annex A - Part II)
Identify, label and remove from use equipment
(i) >10% PCB and volumes >5 litres;
(ii) >0.05 per cent PCB and volumes >5 litres;
(iii) >0.005 percent PCBs and volumes >0.05 litres.
0.05 % 500 ppm; 0.005 % 50 ppm
(b) Reduction of exposures and risk:
i) Intact and non-leaking equipment and only in areas where the risk from environmental release can be minimised and quickly remedied;
(ii) No use of equipment in areas associated with the production or processing of food or feed;
(iii) When used in populated areas, including schools and hospitals, all reasonable measures to protect from electrical failure which could result in a fire, and regular inspection of equipment for leaks;
DDT 36 Vector control, contaminant (Korea) intermediate for dicofol (China, India)
PCB 34 In electrical equipment (Poland)
Chlordane 14Termiticide, plywood (Japan, Korea)
HCB 13 Intermediate, solvent for pesticides, contam- inant chlorthalonil, Cl5Bz (Poland, Korea)
Heptachlor 7 Termiticide, articles in use (Japan, Korea)
Mirex 2 Termiticide (Australia, China)
Aldrin 1 Ectoparasiticide, insecticide (Comores)
Dieldrin 1 Agricultural stocks - 2 years (India)
Compounds included (Annex C):PCDD/PCDF(incl. 12 dioxin-like PCB; WHO-TEFs)PCB and HCB
Each Party shall at a minimum take the following measures to reduce the total releases … of each of the chemicals listed in Annex C, with the goal of their continuing minimization and, where feasible, ultimate elimination.
(a) establish action plan (source identification, release inventories)
(b) promote measures to achieve realistic release reduction or source elimination
(c) Promote/require the use of substitute or modified materials, products and processes to prevent the formation and release of the chemicals in Annex C
(d) Promote/require the use of BAT for new sources and promote use of BEP for identified source categories
(e) Promote the use of BEP for existing sources and for sources not covered under (d)
(a) Develop an action plan … within two years of the date of entry into force of this Convention …. Designed to identify, characterize and address the releases of the chemicals listed in Annex C …
(i) An evaluation of current and projected releases, including the development and maintenance of source inventories and release estimates, taking into consideration the source categories identified in Annex C
(a) Waste incinerators, including co-incineration of municipal, hazardous or medical waste or sewage sludge
(b) Cement kilns firing hazardous waste
(c) Production of pulp using elemental chlorine or chemicals generating elemental chlorine for bleaching
(d)The following thermal processes in the metallurgical industry
(i) Secondary copper production; (ii) Sinter plants in the iron and steel industry; (iii) Secondary aluminum production; (iv) Secondary zinc production.
a) The use of low-waste technology;
(b) The use of less hazardous substances;
(c) The promotion of recovery/recycling of waste and of substances;
(d) Replacement of POPs feed materials or where there is a direct link between the materials and releases of POPs from the source;
(e) Good housekeeping and preventive maintenance programmes;
(f) Improvements in waste management with the aim of cessation of open and other uncontrolled burning of wastes, landfill sites. Before constructing new waste disposal facilities, consideration should be given to minimize the generation of municipal and medical waste, including resource recovery, reuse, recycling, waste separation and promoting products that generate less waste. Public health concerns should be carefully considered;
(g) Minimization of these chemicals as contaminants in products;
(h) Avoiding elemental chlorine or chemicals generating elemental chlorine for bleaching.
(i) Nature, effects and mass of the releases concerned: techniques may vary depending on source size
(ii) Commissioning dates for new or existing installations;
(iii) Time needed to introduce the best available technique;
(iv) Consumption/nature of raw materials and energy efficiency;
(v) Need to prevent or reduce to a minimum the overall impact of the releases to the environment and the risks to it;
(vi) Need to prevent accidents and to minimize their consequences for the environment;
(vii) Need to ensure occupational health and safety at workplaces;
(viii) Comparable processes, facilities or methods of operation which have been tried with success on an industrial scale;
(ix) Technological advances, changes in scientific knowledge and understanding.
(b) For new facilities or significantly modifying existing facilities that release POPs, priority consideration should be given to alternative processes, techniques or practices that have similar usefulness but which avoid the formation and release of POPs. ... Reduction measures to be considered in determining best available techniques:
(i) Use of improved methods for flue-gas cleaning such as thermal or catalytic oxidation, dust precipitation, or adsorption;
(ii) Treatment of residuals, wastewater, wastes and sewage sludge by, for example, thermal treatment or rendering them inert or chemical processes that detoxify them;
(iii) Process changes that lead to the reduction or elimination of releases, such as moving to closed systems;
(iv) Modification of process designs to improve combustion and prevent formation of POPs, through the control of parameters such as incineration temperature or residence time.
NOTE: The Stockholm Convention does not set any numeric emission limits nor reduction requirements (in percent).
(g) Release limit values or performance standards may be used by a Party to fulfil its commitments for best available techniques under this paragraph.
Aldrin 33,991 Pesticide data from:
Chlordane 41,841 FAO (Rome)
DDT 637,046 Obsolete/Unwanted Pesticide
Dieldrin 715,881 Database
PCB 12,988 tons15 countries: Basel 1998
Goal = to identify possible POPs as early as possible in assessment programs and take action to reduce or eliminate generation and/or releases
Stockholm Convention homepage:[http://www.pops.int]http://www.chem.unep.ch/sc