Map Amendment from R-5-B to R-4, Lanier Pl. NW, Ontario Rd. NW, 18th St. NW, Ontario Pl. NW, Argonne Pl. NW & Adams Mill Rd. NW (Sq. 2580, Lots 354, 359, 360, 386, 387, 417-422, 432-436, 449, 480-485, 513, 824, 840 & 841; Sq. 2581, Lots 290-298, 441-447, 464-468, & 472-476; Sq. 2582, Lots 172, 173, 191-196, 353, 376-381, 401-409, 827, 828 & 2040-2045; Sq. 2583, Lots 336-338, 343-352, 356, 357, 361-363, 389-400, 414-416, 437-439, 450-452, 454-462, 486, 487, 512, 856, 857, 2108-2111 &2097-2104; Sq. 2584, Lots 310-316, 365-368, 373-376, 504, 505, 818, 822-825 & 828; Sq. 2587, Lots 489-500, 2001-2005, 2009 & 2010; Sq. 2589, Lots 452-468; Sq. 2586W, Lots 411, 412, 805 & 806).