Section R. 325.12705 - Certification for VOC analysesRule 2705.
(1) To receive certification to conduct analyses for the VOCs, other than vinyl chloride, in table 1 of R 325.10604b, a laboratory shall be in compliance with all of the following requirements:(a) Analyze performance evaluation samples which include the VOCs, other than vinyl chloride, in table 1 of R 325.10604b, and which are provided by the United States environmental protection agency, the department, or by a third party, with the approval of the department or the United States environmental protection agency, at least once per year by each method for which the laboratory desires certification.(b) Achieve the quantitative acceptance limits specified in subdivisions (c) and (d) of this subrule for not less than 80% of the regulated organic chemicals in table 1 of R 325.10604b.(c) Achieve quantitative results on the analyses performed under subdivision (a) of this subrule that are within +/-20% of the actual amount of the substances in the performance evaluation sample when the actual amount is greater than or equal to 0.010 mg/l.(d) Achieve quantitative results on the analyses performed under subdivision (a) of this subrule that are within +/-40% of the actual amount of the substances in the performance evaluation sample when the actual amount is less than 0.010 mg/l.(e) Achieve a method detection limit of 0.0005 mg/l, according to the procedures specified in 40 C.F.R. part 136, appendix B.(2) To receive certification for vinyl chloride, a laboratory shall be in compliance with all of the following requirements:(a) Analyze performance evaluation samples provided by the United States environmental protection agency, the department, or by a third party, with the approval of the department or the United States environmental protection agency, at least once per year by each method for which the laboratory desires certification.(b) Achieve quantitative results on the analyses performed under subdivision (a) of this subrule that are within +/-40% of the actual amount of vinyl chloride in the performance evaluation sample.(c) Achieve a method detection limit of 0.0005 mg/l, according to the procedures specified in 40 C.F.R. part 136, appendix B.(d) Obtain certification for the VOCs listed in part 6, table 1 of R 325.10604b.(3) Each certified laboratory shall determine the method detection limit (MDL), as defined in 40 C.F.R. part 136, appendix B, at which the laboratory is capable of detecting VOCs. The acceptable MDL is 0.0005 mg/l.(4) To composite samples, the laboratory shall be in compliance with both of the following provisions: (a) For compositing samples before gas chromatograph (GC) analysis, be in compliance with all of the following provisions:(i) Add 5 ml or equal larger amounts of each sample (up to 5 samples are allowed) to a 25-ml glass syringe. Special precautions shall be taken to maintain zero headspace in the syringe.(ii) The samples shall be cooled at 4Chr(176) Celsius during compositing to minimize volatilization losses.(iii) Mix well and draw out a 5-ml aliquot for analysis.(iv) Follow sample introduction, purging, and desorption steps described in the method.(v) If less than 5 samples are used for compositing, a proportionately smaller syringe may be used.(b) For compositing samples before GC/MS analysis, be in compliance with all of the following provisions: (i) Inject 5-ml or equal larger amounts of each aqueous sample (up to 5 samples are allowed) into a 25-ml purging device using the sample introduction technique described in the method.(ii) The total volume of the sample in the purging device shall be 25 ml.(iii) Purge and desorb as described in the method.(5) 40 C.F.R. part 136, appendix B, is adopted by reference in these rules.The adopted material is available from the superintendent of documents at the address in R 325.10116(b) for a cost of $61.00 at the time of adoption of these rules. The adopted material is available for inspection, or copies are available at no cost from the offices of the department at the address in R 325.10116(a).Mich. Admin. Code R. 325.12705
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