1392 LAWS OF MARYLAND. [CH. 582

safety or welfare by reason of the lack of water supply, drain-
age, transportation or other public services or necessitate an
excessive expenditure of public funds for the supply of such
services; or conformity of re-subdivided lots to the character
of lots within the existing sub-division with respect to area,
frontage and alignment to existing lots and streets; or for
other benefits to the health, comfort, safety or welfare of the
present and future population of the District.

Such regulations may include provisions as to the extent
and manner in which roads shall be graded and improved;
curbs, gutters, and sidewalks shall be built; water, sewer and
other utility mains, piping, connections, and other facilities
shall be installed; and trees shall be planted or conserved as
a condition precedent to the approval of a plat. The regula-
tions or practice of the Commission may provide for the tenta-
tive approval of a plat previous to such improvements and
installations; but any such tentative approval shall not be
entered on the plat or entitle the plat to filing or record. In
lieu of the completion of such improvements prior to the ap-
proval of the plat, the Commission may accept a bond with
surety to secure to the Commission the actual construction
and installation of such improvements and installations at a
time and according to specifications fixed by or in accordance
with the regulations of the Commission. The Commission is
hereby granted the power to enforce such bond by all appro-
priate legal and equitable remedies.

The Commission may also institute injunction, mandamus,
or other appropriate action or proceeding to compel the actual
construction and installation of such improvements and con-
servation of such resources at a time and according to specifi-
cations fixed by or in accordance with the regulations of the
Commission. For such purpose any court of competent juris-
diction is hereby granted jurisdiction to issue restraining
orders and temporary or permanent injunctions or mandamus
or other appropriate forms of remedy or relief.

Before adoption of its sub-division regulations or any sub-
stantial amendment thereof, a public hearing thereon shall be
held by the Commission, thirty days' notice of the time and
place of which shall be given by one publication in one or
more newspapers of general circulation in the District.

In the event that the regulations or amendment are applic-
able throughout the District, at least one hearing shall be
held within the portion of the District in each county, respec-
tively; and thirty days' notice of the xtime and place of said
hearings shall be published in one or more newspapers of
general circulation within the District. If the regulations or
amendment are applicable only within that portion of the
District within one county, the hearings shall be held within