1494 LAWS OF MARYLAND. [CH. 714

tions or practice of the Commission may provide for the ten-
tative 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 speci-
fications 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 subdivision 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.

SEC. 10. And be it further enacted, That the Commission
shall approve or disapprove a subdivision plat within thirty
days after the submission thereof; otherwise such plat shall
be deemed to have been approved and a certificate to that
effect shall be issued by the Commission upon demand; pro-
vided, however, that the applicant for the Commission's ap-
proval may waive this requirement and consent to the exten-
sion of such period. The ground of disapproval of any plat
shall be stated upon the records of the Commission. Any
plat submitted to the Commission shall contain the name
and address of a person to whom notice of hearing may be
sent; and no plat shall be acted upon by the Commission
without affording a hearing thereon, notice of the time and
place of which shall be sent by mail to said address not Jess
than five days before the date fixed therefor; provided, how-
ever, that in his application applicant may waive such hear-
ing and notice, and the approval of any plat exactly as sub-
mitted by the applicant shall be deemed a waiver of such
hearing and notice. The Commission is empowered to include
in its subdivision regulations provisions for notice to owners
of properties that would be substantially affected by approval