Priority hazardous substances

In addition, the DoE proposed EQSs in a 1991 consultation document for those pesticides on the Red List (the UK s original priority hazardous substances list). Although non-statutory, the Government is committed to the reduction of Red List Substances discharging to the North Sea and the NRA uses the standards to assess the effects of these substances on the environment and to derive consents for point source discharges of these compounds. Failures for agricultural pesticides are rare. 

Roney N, Henriques WD, Fay M, et al. 1998. Determining priority hazardous substances related to hazardous waste sites. Toxicol Ind Health 14 521-532. 

Included in the Directive 2008/105/EC as substances subject to review for possible identification as priority substances or priority hazardous substances... 

Monitoring data driven (with use of models if monitoring data not available) high toxicity PBT criteria used to obtain further ranking as a priority hazard substance... 

The 2001 ATSDR s priority hazardous substances list includes 275 compounds ranked on a combination of criteria including their frequency, toxicity, and potential for human exposure at American priority list sites. The European list of priority substances (Water Framework Directive, 2000/60/EC) categorizes 33 substances or groups of substances, all of which pose a major threat to environmental waters. At present, 11 substances are identified as hazardous and, thus, their emission, discharges and losses should cease not later than in 20 years. For another 14 substances, eight of... 

Priority substances under review as possible priority hazardous substances ... 

These group of substances normally include a considerable number of individual compounds. At present, appropriate indicative parameters are not given. Only pentabromobiphenylether is identified as priority hazardous substance. 

To monitor the progressive reduction in the contamination of water bodies with priority substances and the phasing out of priority hazardous substances. 

During the period of implementation of the Water Framework Directive we have also performed some screening activities for the priority hazardous substances and priority substances. The next step in developing our monitoring system will focus on biodiversity, one of the Swedish environmental objectives mentioned in Section 2.1.2. This monitoring should be designed to show the presence, nature and persistence of possible threats to biodiversity. 

European Commission (2000b) Modified proposal for a procedure for the identification of priority hazardous substances in accordance to Article 16(3) of the Water Framework Directive, final draft (Working Document ENV/191000/()l of 19 October 2000), European Commission, DG Environment, Unit E.l, Brussels. 

The previous sections have highlighted the need to integrate scientific and technical progress within the implementation of the WED. However, if the WFD provides some indications of where and when, in the implementation process, it is necessary to integrate new scientific and technical knowledge (economic analysis, standards for monitoring of quality elements, review and update of river basin management plans, identification of priority hazardous substances, etc.), it makes no recommendations on how to do this. 

For the proteaion of surface waters, the Direaive introduces criteria for establishing a list of priority substances and priority hazardous substances, for which specific measures such as quality standards and emission controls must be taken in order to reduce or eliminate emissions, discharges... 

The importance of organotins as environmental endocrine disrupters and their potential to adversely affect human health, has prompted the European Commission to identify tributyltin (TBT) as a priority hazardous substance. Organotin compounds are widely employed as stabilizers of polyvinyl chloride (PVC) polymers, and as industrial catalysts for polyurethane and silicone elastomers. Hence, they are present in water pipes, food packing materials, polyurethane foams and many other consumer products. The prominent toxicological feature of the organotins is their immunotoxicity, and the effect produced by di- and trialkyltins as well as triphenyltins. 

Article 16 of the WFD states that the European Commission must define the priority substances as well as the priority hazardous substances. By implementing this provision, the daughter Directive on Priority Substances was raised in 2008. This directive was in 2013 supplemented with revised standards and new substances. Priority substances are hazardous substances representing a significant risk to the aquatic en-viromnent and for which measures are formulated aimed at the progressive reduction of emissions of these substances. Some of these substances have been identified as priority hazardous substances, for which measures should be aimed at the cessation or phasing out of discharges, emissions, and losses. 

Number CAS number EU number Name of priority substance Identified as priority hazardous substance... 

Depending on the type of chemical, the collection of concentrated residues may not be sufficient separate collection of the (less concentrated) rinsing waters may be needed (Derden et al., 2011). This is the case for chemicals for which very low environmental quality standards are issued, usually in combination with the classification as priority hazardous substances within the Water Frame Directive (see information to come). Examples are brominated flame retardants, fluorosurfactants, nonylphenols, and nonylphenolethoxylates for which concentrated residues and rinsing waters are preferably reused in the process. If this is not feasible, they need to be treated as waste by a third party having the necessary permits to do so. 

Figure 3.5 shows the number and distribution of notifications in the first few years of the program established under Order Number 7 [147]. Of the 148 notifications approved for substances >1 tonne per year between 2011 and 2013,18% were reportedly classified as general substances, 41% as hazardous substances, and 41% as priority hazardous substances [147]. These substances will be added to the lECSC five years from the date of the first production or import of the substance by the holder of the registration certificate [147]. 

Within the EU, pentachlorobenzene and HCB are classified as priority hazardous substances imder regulations that require measmes to be taken to eliminate their pollution of surface waters in Emope. They are also listed as persistent organic pollutants for global restriction under the Stockholm Convention, and in line with this they are prohibited or scheduled for reduction and eventual elimination in Europe. 

Uses of chromimn (VI) include certain textile processes and leather taiming. It is highly toxic even at low concentrations, including too many aquatic organisms. Within the EU, cadmium, mercury and lead have been classified as priority hazardous substances under regulations that require measru es to be taken to eliminate their pollution of surface waters in Europe. Uses of cadmium, mercury and lead have been severely restricted in Europe for some time, including certain specific uses of mercury and cadmium in textiles. 

Heavy metals such as cadmium, lead, mercury, and chromium used in certain dyes and pigments cause damage to the nervous system and kidneys. They have an accumulating tendency in the body. Lead and mercury damage the nervous system, whereas cadmium damages the kidneys or causes cancer. Chromium VI is toxic even at a low concentration to aquatic organisms, and thus the first three metals out of the four fall under the EU s Priority Hazardous Substance list. 

Atsdr CERCLA List of Priority Hazardous Substances Agency for Toxic Substance and Disease Control Atlanta, GA, 1999. 

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