Lead Nonattainment AreasAs of December 14, 2012
Detailed Description of Certain Area Boundaries for Partial Counties
East Helena Area (Lewis and Clark Co.), MT
Lewis And Clark Co
Northern boundary - Horizontal Universal Transverse Mercatur(UTM) 5,162,000 mN; eastern boundary - vertical UTM 432,500 mE; southern boundary - horizontal UTM 5,158,000 mN; western boundary - vertical UTM 427,000 mE.