![]() ![]() Surrogate compound means a compound that serves as a model for the target compound(s) being measured ( i.e., similar chemical structure, properties, behavior). Quadruplicate sampling system means a sampling system capable of obtaining four replicate samples ( e.g., two pairs of measured data, one pair from each method when comparing a candidate test method against a validated test method, or analyte spiking with two spiked and two unspiked samples) that are collected as close as possible in sampling time and sampling location. Paired sampling system means a sampling system capable of obtaining two replicate samples that are collected as closely as possible in sampling time and sampling location (collocated). The candidate test method may be an alternative test method under 40 CFR part 59, 60, 61, 63, or 65. The procedures for ruggedness testing and determining detection limits are required for candidate test methods that are to be applied to multiple sources and optional for candidate test methods that are to be applied at a single source.Īffected source means an affected source as defined in the relevant part and subpart under Title 40 ( e.g., 40 CFR parts 59, 60, 61, 63, and 65).Ĭandidate test method means the sampling and analytical methodology selected for field validation using the procedures described in Method 301. Method 301 also includes procedures for ruggedness testing and determining detection limits. If such procedures have not been established and verified for the candidate test method, Method 301 contains procedures for ensuring sample stability by developing sample storage procedures and limitations and then testing them. A quadruplicate sampling system is required when establishing precision for analyte spiking or when comparing a candidate test method to a validated method. Precision may be determined using a paired sampling system or quadruplicate sampling system for isotopic spiking. Bias may be adjusted on a source-specific basis using a correction factor and data obtained during the validation test. Bias is established by comparing the results of sampling and analysis against a reference value. ![]() Method 301 includes minimum procedures to determine and document systematic error (bias) and random error (precision) of measured concentrations from exhaust gases, wastewater, sludge, and other media. ![]() Section 17 of this method describes the requirements for obtaining a waiver.ģ. In some cases, the Administrator may decide to waive the requirement to use Method 301 for a candidate test method to be used to meet a requirement under 40 CFR part 59, 60, 61, 63, or 65 in absence of a validated test method. You must receive the Administrator's written approval to use the candidate test method before you use the candidate test method to meet the applicable federal requirements. If you want to use a candidate test method to meet requirements in a subpart of 40 CFR part 59, 60, 61, 63, or 65, you must also request approval to use the candidate test method according to the procedures in Section 16 of this method and the appropriate section of the part ( § 59.104, § 59.406, § 60.8(b), § 61.13(h)(1)(ii), § 63.7(f), or § 65.158(a)(2)(iii)). If, under 40 CFR part 63 or 60, you choose to propose a validation method other than Method 301, you must submit and obtain the Administrator's approval for the candidate validation method. Additionally, the validation procedures of Method 301 are appropriate for demonstration of the suitability of alternative test methods under 40 CFR parts 59, 60, and 61. ![]() These validation procedures are applicable under 40 CFR part 63 or 65 when a test method is proposed as an alternative test method to meet an applicable requirement or in the absence of a validated method. Method 301 provides a set of procedures for the owner or operator of an affected source to validate a candidate test method as an alternative to a required test method based on established precision and bias criteria. Method 301-Field Validation of Pollutant Measurement Methods From Various Waste MediaĢ.0 What approval must I have to use Method 301?ĩ.0 What are the requirements for precision?ġ0.0 What calculations must I perform for isotopic spiking?ġ1.0 What calculations must I perform for comparison with a validated method?ġ2.0 What calculations must I perform for analyte spiking?ġ3.0 How do I conduct tests at similar sources?ġ4.0 How do I use and conduct ruggedness testing?ġ5.0 How do I determine the Limit of Detection for the candidate test method?ġ6.0 How do I apply for approval to use a candidate test method?ġ8.0 Where can I find additional information? ![]()
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