Replace the text of the first bullet with the following:Employ permanent entryway systems at least 10 feet long in the primarydirection of travel to capture dirt and particulates entering the building atregularly used exterior entryways. Acceptable entryway systems includepermanently installed grates, grills and slotted systems that allow forcleaning underneath. Roll-out mats are acceptable only when maintainedon a weekly basis by a contracted service organization.