European Communities Citation and commencement 1 These Regulations may be cited as The Chemical Analysis of Water Status (Technical Specifications) Regulations (Northern Ireland) 2011 and shall come into operation on 20 th August 2011. Interpretation 2 1 In these Regulations— “limit of detection” means the output signal or concentration value above which it can be affirmed, with a stated level of confidence that a sample is different from a blank sample containing no determinand of interest; “limit of quantification” means a stated multiple of the limit of detection at a concentration of the determinand that can reasonably be determined with an acceptable level of accuracy and precision. The limit of quantification can be calculated using an appropriate standard or sample, and may be obtained from the lowest calibration point on the calibration curve, excluding the blank; ... “ protected area ” has the same meaning as in regulation 10(2) of the 2017 Regulations; “ river basin district ” and “ international river basin districts ” have the same meaning as in regulation 2(1) of the 2017 Regulations; “the Water Framework Directive” means Directive 2000/60 EC of the European Parliament and of the Council establishing a framework for Community action in the field of water policy as last amended by Commission Directive 2014/101/EU . “ the Department ” means the Department of the Environment; “ the Directive ” means Council Directive 2009/90/EC of 31 July 2009 laying down, pursuant to Directive 2000/60/EC of the European Parliament and of the Council, technical specifications for chemical analysis and monitoring of water status ; “the Water Framework Directive ” means Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy ; and “uncertainty of measurement” means a non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used. 2 Words and expressions used in these Regulations have the same meaning as they do in the Water Framework Directive. 3 The Interpretation Act (Northern Ireland) 1954 shall apply to these Regulations as it applies to an Act of the Assembly. Application of these Regulations 3 The Department when carrying out its functions under regulation 11 of the 2017 Regulations shall— a monitor or secure the monitoring of the status of the water environment in the river basin district and the part of any international river basin districts falling within Northern Ireland; b monitor or secure the monitoring of the status of the water environment in protected areas; and c analyse or secure the analysis of information obtained following monitoring under sub paragraphs (a) and (b). Methods of analysis 4 The Department shall ensure that all methods of analysis, including laboratory, field and on-line methods, used for the purposes of regulation 3(c) are validated and documented in accordance with EN ISO /IEC-17025 standard or other equivalent standard accepted at international level. Minimum performance criteria for methods of analysis 5 The Department shall ensure that— a the minimum performance criteria for all methods of analysis applied are based on uncertainty of measurement of 50% or below (k = 2) estimated at the level of relevant environmental quality standards and a limit of quantification equal or below a value of 30% of the relevant environmental quality standards; and b in the absence of relevant environmental quality standard for a given parameter, or in the absence of a method of analysis meeting the minimum performance criteria set out in paragraph (a), that monitoring is carried out using best available techniques not entailing excessive costs. Calculation of mean values 6 The Department shall ensure that— a subject to paragraph (c), where the amounts of physico-chemical or chemical measurands in a given sample are below the limit of quantification, the measurement results shall be set to half of the value of the limit of quantification concerned for the calculation of mean values; b where a calculated mean value of the measurement results referred to in paragraph (a) is below the limits of quantification, the value shall be referred to as ‘less than limit of quantification’; and c where measurands are total sums of a given group of physico-chemical parameters or chemical measurands, including their relevant metabolites, degradation and reaction products, results below the limit of quantification of the individual substances shall be set to zero. Quality assurance and control 7 The Department shall ensure that— a it or a party contracted by it apply quality management system practices in accordance with EN ISO/IEC-17025 standard or other equivalent standard accepted at international level; b it or a party contracted by it demonstrate their competence in analysing relevant physico-chemical or chemical measurands by: i participation in proficiency testing programmes covering the methods of analysis referred to in regulation 4 of measurands at levels of concentrations that are representative of monitoring programmes carried out under r regulation 11 of the 2017 Regulations , and ii analysis of available reference materials that are representative of collected samples which contain appropriate levels of concentrations in relation to relevant environmental quality standards referred to in regulation 5; c the proficiency testing programme referred to in paragraph (b) subparagraph (i) shall be organised by accredited organisations or internationally or nationally recognised organisations which meet the requirements of ISO/ IEC guide 43-1 or of other equivalent standard accepted at international level; and d the results of participation in the proficiency testing programmes referred to in paragraph (b) subparagraph (i) shall be evaluated on the basis of the scoring systems set out in ISO/IEC guide 43-1 or in the ISO-13528 standard or in other equivalent standard accepted at international level. Sealed with the Official Seal of the Department of the Environment on 1 st July 2011 Denis McMahon A senior officer of the Department of the Environment