The primary and secondary ambient air quality standards for lead specified in Env-A 308.01 shall be deemed to be attained when the maximum arithmetic 3-month mean concentration for a 3-year period, as determined in accordance with 40 CFR 50 Appendix R, is less than or equal to 0.15 µg/m3.
N.H. Admin. Code § Env-A 308.02
#6227, eff 4-25-96; ss by #8054, eff 2-28-04; ss by #10173, eff 9-1-12