1282                             Laws of Maryland                       [Ch. 743

expedient or impracticable at that time, owing to the remoteness
from its general system or other causes, to build such system, such
[county or] persons may build and operate said system at [its or]
their own expense, but it shall be constructed under plans and speci-
fications prepared by the Commission [and] or under its super-
vision, and its maintenance and operation shall be under the gen-
eral control of the Commission; and no such system or part thereof,
or no water main, sewer, water purification or sewage treatment
plant, or no connection with any of them, shall be constructed or
installed except as in this section provided, and any violation of
this provision shall be a misdemeanor punishable under Section
551 of this sub-title. All construction and operating records, in-
cluding cost records, shall be filed with the Commission, which shall
be empowered at any time to take over said system or part thereof,
or said water main, sewer, storm water drain, water or sewage treat-
ment plant, or connect on with any of them in the same manner
as provided under Section 547 for systems existing on June 1, 1957.
[The Commission shall be empowered to extend its water supply,
sewerage or drainage systems into any area outside of any sanitary
district contiguous thereto and not included in any other District on
or in the vicinity thereof, when the property owners of said area
shall agree to the charges, assessments and conditions that may be
imposed by the Commission as hereinbefore outlined.]

549.   Right of Entry.

Any employee or agent of the Commission shall have the right of
entry, at all reasonable hours? upon any private premises and into
any building, in [such sanitary district] a sub-district, while in pur-
suit of his official duties, upon first presenting proper credentials
from the Commission, and any restraint or hindrance offered to such
entry by any owner or tenant, or agent of said owner or tenant, or
any other person, shall be a misdemeanor punishable under Section
551 of this sub-title.

550.   Impediments to Commission's Facilities.

All individuals, firms or corporations having buildings, conduits,
pipes, tracks, poles or other structures or obstructions in, on, over,
under or through any public road, street, or alley of any [sanitary
district] sub-district which shall block or impede the construction
and establishment of the Commission's water [supply] systems,
sewerage [or drainage] systems or surface water drainage systems,
or other works, shall upon reasonable notice from the Commission,
promptly so shift, adjust, accommodate or remove such structure
or obstructions as to fully meet the exigencies occasioning such ac-
tion; provided, however, that the costs of such changes shall be borne
and paid for by the Commission from the funds credited to the sub-
district in which such change occurs. Every public service corpo-
ration, company or individual before it or they shall begin any
excavation or construction in any street, road, alley or public high-
way within any [sanitary district] sub-district shall file with the
Commission plans of such work and construction showing the loca-
tion and depth in such street, road, alley or public highway, of the
proposed main, conduit, pole, pipe or other structure, and such con-
struction or work shall not be begun until said plan shall have been
approved by the Commission, nor shall any change be made in said
approved plan or in the work or construction as shown upon said