use or permit its use for any other purpose;
(4) To abide by necessary and reasonable regulations promulgated by the PHA for the benefit and well-being of the housing project and the tenants which shall be posted in the project office and incorporated by reference in the lease;
(5) To comply with all obligations imposed upon tenants by applicable provisions of building and housing codes materially affecting health and safety;
(6) To keep the dwelling unit and such other areas as may be assigned to the tenant for the tenant's exclusive use in a clean and safe condition;
(7) To dispose of all ashes, garbage, rubbish, and other waste from the dwelling unit in a sanitary and safe manner;
(8) To use only in a reasonable manner all electrical, plumbing, sanitary, heating, ventilating, air-conditioning and other facilities and appurtenances including elevators;
(9) To refrain from, and to cause the household and guests to refrain from destroying, defacing, damaging, or removing any part of the dwelling unit or project;
(10) To pay reasonable charges (other than for wear and tear) for the repair of damages to the dwelling unit, or to the project (including damages to project buildings, facilities or common areas) caused by the tenant, a member of the household or a guest.
(11) To act, and cause household members or guests to act, in a manner which will not disturb other residents' peaceful enjoyment of their accommodations and will be conducive to maintaining the project in a decent, safe and sanitary condition;
(12)
(i) To assure that no tenant, member of the tenant's household, or guest engages in:
(A) Criminal activity. ( 1 ) Any criminal activity that threatens the health, safety or right to peaceful enjoyment of the premises by other residents;
( 2 ) Any drug-related