Ordinance amending Zoning Map Sheets ZN01, ZN07, ZN08, HT01, HT07, HT08 and SU08 of the City and County of San Francisco Planning Code with revised use districts and height and bulk districts within the four Eastern Neighborhoods Planning Areas comprised of the East South of Market, Mission, Showplace Square/Potrero Hill and Central Waterfront Area Plans; and creating three four five four special use districts for Life Science and Medical Special Use District bounded generally by Mariposa Stree