N.H. Code Admin. R. Env-A 1410.02 – Calculation of Annual Ambient Air Limits

(a) “OEL” means the occupational exposure limit for the RTAP.
(b) “SF” means the safety factor as determined by Env-A 1408.01.
(c) To calculate the annual AAL for an RTAP, the occupational exposure limit shall be divided by the product of 4.2 and the safety factor, as in the formula below:
AAL_(Annual) = OEL / (SF x 4.2)

Source. #6328, INTERIM, eff 8-24-96, EXPIRED: 12-22-96 New. #6468-B, eff 3-5-97; amd by #6739-B, eff 5-8-98; ss and moved by #8278, eff 2-4-05 (from Env-A 1411.02); ss by #9601, eff 11-25-09; ss by #10550, eff 4-4-14; ss by #12443, eff 1-5-18; ss by #13334, eff 2-3-22