For the purpose of determining attainment of the primary and secondary ambient air quality standards for lead specified in Env-A 308.01, lead in the ambient air shall be measured by either:

1. (a) A reference method based on 40 CFR 50 Appendix G and designated in accordance with 40 CFR 53; or

2. (b) An equivalent method designated in accordance with 40 CFR 53.

   Source. #10173, eff 9-1-12; ss by #13382, eff 5-25-22

   Appendix A: State Statute, Federal Statute/Regulations Implemented

   Rule Section(s)

   State Statutes Implemented

   Federal Statutes/Regulations Implemented

   Env-A 300 (see parts listed below for additional info)

   RSA 125-C:1; RSA 125-C:6

   42 U.S.C. §7409; 40 CFR 50; 40 CFR 53

   Env-A 302

   40 CFR §50.1

   Env-A 303

   40 CFR §50.6, §50.7; 40 CFR 50 Appendix J, K, L & N

   Env-A 304

   40 CFR §50.4, §50.5; 40 CFR 50 Appendix A-1 & A-2

   Env-A 305

   40 CFR §50.8; 40 CFR 50 Appendix C

   Env-A 306

   40 CFR §50.11; 40 CFR 50 Appendix F & S

   Env-A 307

   40 CFR §50.9, §50.10; 40 CFR 50 Appendix H & I

   Env-A 308

   40 CFR §50.12; 40 CFR 50 Appendix G & R

   Appendix B: Definitions from 40 CFR §50.1

   40 CFR §50.1

3. (f) Reference method means a method of sampling and analyzing the ambient air for an air pollutant that is specified as a reference method in an appendix to this part, or a method that has been designated as a reference method in accordance with part 53 of this chapter; it does not include a method for which a reference method designation has been cancelled in accordance with §53.11 or §53.16 of this chapter.
4. (g) Equivalent method means a method of sampling and analyzing the ambient air for an air pollutant that has been designated as an equivalent method in accordance with part 53 of this chapter; it does not include a method for which an equivalent method designation has been cancelled in accordance with §53.11 or §53.16 of this chapter.