The Wisconsin Natural Resources Board proposed amendments to Wis. Admin. Code NR §§428.04(1) and (3)(b), 428.05(1) and (4)(b)2., 428.07(intro.), (1)(a) and (b)1. and 3., (3) and (4)(c), 428.08(title) and (2)(title), 428.09(2)(a), 428.20(1), 428.22(2)(intro.), 428.23(1)(b)1., 428.24(1)(b)(intro.) and 428.25(1)(a)1.a. and c. and (3)(b) and creation of Wis. Admin. Code NR §§428.02(7e), 428.08(2)(f), 428.12, 428.23(1)(b)9, relating to modification of existing rules for control of nitrogen oxide (NOx) emitted by stationary sources in the ozone nonattainment area in southeastern Wisconsin. The proposed revisions address required modifications to the NOx reasonably available control technology program to meet minimum criteria for conditional federal approval of the program into the SIP. The revisions would also clarify and facilitate implementation. http://www.legis.state.wi.us/ruletext/08-103-0.pdf.