amendment The table of sections at the beginning of such subchapter is amended by inserting after the item relating to section 2886 the following new item: 2886a. Prohibiting use of call centers outside the United States for tenant maintenance calls. . (c) Effective date The amendments made by this section shall take effect on the date that is one year after the date of the enactment of this Act. 3035. Radon testing for privatized military housing (a) Report Not later than March 1, 2020, the Secretary of Defense shall submit to the congressional defense committees a report identifying the installations of the Department of Defense that have privatized military housing that should be monitored for radon. (b) Initial testing (1) Procedures The Secretary shall establish testing procedures for all privatized military housing at installations identified under subsection (a), whether through regular testing of such housing or the installation of monitoring equipment, to ensure radon levels are below recommended levels established by the Environmental Protection Agency. (2) Completion of testing Not later than June 1, 2020, the Secretary shall complete testing described in paragraph (1) for all privatized military housing identified under subsection (a). (c) Notification regarding mitigation device In the event that a privatized military housing unit is determined under testing under subsection (b)(2) to need a radon mitigation device, the Secretary shall notify the landlord of such unit not later than seven days after such determination. (d) Annual testing Not less frequently than annually, the Secretary of each military department shall certify to the congressional defense committees that radon testing is being conducted for privatized military housing at installations identified under subsection (a) under the jurisdiction of the Secretary concerned, whether through regular testing of such housing or the installation of monitoring equipment. 3036. Expansion of windows covered by requirement to use window fall