That the owner agrees that he will lay out and
construct all roads, streets, lanes or alleys, together with all other
improvements, including grading, paving, curbs, gutters, sidewalks,
street rights, fire hydrants, water mains, street signs, shade trees,
storm and sanitary sewers, landscaping, traffic control devices, open
space and restriction areas, erosion and sediment control measures
in accordance with the final plan as approved, where any or all of
these improvements are required as conditions of approval, and that
he shall complete these improvements within the time or times specified
by the Board of Supervisors.