PART 6U.K.Monitoring of emissions
1.Measurement techniquesU.K.
1.1.Measurements for the determination of concentrations of air and water polluting substances shall be carried out representatively.U.K.
1.2.Sampling and analysis of all polluting substances including dioxins and furans as well as the quality assurance of automated measuring systems and the reference measurement methods to calibrate them shall be carried out according to CEN-standards. If CEN standards are not available, ISO, national or other international standards which ensure the provision of data of an equivalent scientific quality shall apply. Automated measuring systems shall be subject to control by means of parallel measurements with the reference methods at least once per year.U.K.
1.3.At the daily emission limit value level, the values of the 95 % confidence intervals of a single measured result shall not exceed the following percentages of the emission limit values:U.K.
| Carbon monoxide: | 10 % |
| Sulphur dioxide: | 20 % |
| Nitrogen dioxide: | 20 % |
| Total dust: | 30 % |
| Total organic carbon: | 30 % |
| Hydrogen chloride: | 40 % |
| Hydrogen fluoride: | 40 %. |
Periodic measurements of the emissions into air and water shall be carried out in accordance with points 1.1 and 1.2.
2.Measurements relating to air polluting substancesU.K.
2.1.The following measurements relating to air polluting substances shall be carried out:U.K.
continuous measurements of the following substances: NOx, provided that emission limit values are set, CO, total dust, TOC, HCl, HF, SO2;
continuous measurements of the following process operation parameters: temperature near the inner wall or at another representative point of the combustion chamber as authorised by the competent authority, concentration of oxygen, pressure, temperature and water vapour content of the waste gas;
at least two measurements per year of heavy metals and dioxins and furans; one measurement at least every 3 months shall, however, be carried out for the first 12 months of operation.
2.2.The residence time as well as the minimum temperature and the oxygen content of the waste gases shall be subject to appropriate verification, at least once when the waste incineration plant or waste co-incineration plant is brought into service and under the most unfavourable operating conditions anticipated.U.K.
2.3.The continuous measurement of HF may be omitted if treatment stages for HCl are used which ensure that the emission limit value for HCl is not being exceeded. In that case the emissions of HF shall be subject to periodic measurements as laid down in point 2.1(c).U.K.
2.4.The continuous measurement of the water vapour content shall not be required if the sampled waste gas is dried before the emissions are analysed.U.K.
2.5.The competent authority may decide not to require continuous measurements for HCl, HF and SO2 in waste incineration plants or waste co-incineration plants and require periodic measurements as set out in point 2.1(c) or no measurements if the operator can prove that the emissions of those pollutants can under no circumstances be higher than the prescribed emission limit values.U.K.
The competent authority may decide not to require continuous measurements for NOx and require periodic measurements as set out in point 2.1(c) in existing waste incineration plants with a nominal capacity of less than 6 tonnes per hour or in existing waste co-incineration plants with a nominal capacity of less than 6 tonnes per hour if the operator can prove on the basis of information on the quality of the waste concerned, the technologies used and the results of the monitoring of emissions, that the emissions of NOx can under no circumstances be higher than the prescribed emission limit value.
2.6.The competent authority may decide to require one measurement every 2 years for heavy metals and one measurement per year for dioxins and furans in the following cases:U.K.
the emissions resulting from co-incineration or incineration of waste are under all circumstances below 50 % of the emission limit values;
the waste to be co-incinerated or incinerated consists only of certain sorted combustible fractions of non-hazardous waste not suitable for recycling and presenting certain characteristics, and which is further specified on the basis of the assessment referred to in point (c);
the operator can prove on the basis of information on the quality of the waste concerned and the monitoring of the emissions that the emissions are under all circumstances significantly below the emission limit values for heavy metals and dioxins and furans.
2.7.The results of the measurements shall be standardised using the standard oxygen concentrations mentioned in Part 3 or calculated according to Part 4 and by applying the formula given in Part 7.U.K.
When waste is incinerated or co-incinerated in an oxygen-enriched atmosphere, the results of the measurements can be standardised at an oxygen content laid down by the competent authority reflecting the special circumstances of the individual case.
When the emissions of polluting substances are reduced by waste gas treatment in a waste incineration plant or waste co-incineration plant treating hazardous waste, the standardisation with respect to the oxygen contents provided for in the first subparagraph shall be done only if the oxygen content measured over the same period as for the polluting substance concerned exceeds the relevant standard oxygen content.
3.Measurements relating to water polluting substancesU.K.
3.1.The following measurements shall be carried out at the point of waste water discharge:U.K.
continuous measurements of pH, temperature and flow;
spot sample daily measurements of total suspended solids or measurements of a flow proportional representative sample over a period of 24 hours;
at least monthly measurements of a flow proportional representative sample of the discharge over a period of 24 hours of Hg, Cd, TI, As, Pb, Cr, Cu, Ni and Zn;
at least every 6 months measurements of dioxins and furans; however, one measurement at least every 3 months shall be carried out for the first 12 months of operation.
3.2.Where the waste water from the cleaning of waste gases is treated on site collectively with other on-site sources of waste water, the operator shall take the measurements:U.K.
on the waste water stream from the waste gas cleaning processes prior to its input into the collective waste water treatment plant;
on the other waste water stream or streams prior to its or their input into the collective waste water treatment plant;
at the point of final waste water discharge, after the treatment, from the waste incineration plant or waste co-incineration plant.