WM. PRESTON LANE, JR., GOVERNOR. 31

assessing benefits, except where another basis is used by
agreement with the property owner under Section 330, shall
divide all properties fronting upon a street, lane or alley, in
which a water pipe or sanitary sewer is to be laid into five
classes, namely: First, Agricultural; second, Small Acreage;
third, Industrial or Business; fourth, Subdivision Property;
and fifth, Remote Property, each of which classes may be sub-
classified as hereinafter set forth, and the benefit charges
shall be fixed and levied in accordance with the above classifi-
cation and subclassification thereof, or by agreement pursuant
to Section 330, provided, however, that no front foot benefit
charge shall be levied against any agricultural property until
such property is connected with said water pipe or sanitary
sewer, and provided, further, that when connected, the length
of agricultural property to be assessed shall be limited to
150 feet. The Commissioners shall change the classification
of properties from time to time as said properties change in
the uses to which they are put. The Commissioners shall be
empowered and directed to make a charge upon every build-
ing and place having a connection with the sewerage system
under their control, said charge to be an annual sewerage
service charge. The Commissioners shall be empowered in
their discretion to create subclassifications of any such class
in each calendar year so as to reflect the cost of installation
of any such water pipe or sanitary sewer in any such year.
All assessments and charges, except connection charges and
charges or assessments made pursuant to agreement under
Section 330, shall be uniform for each class of property and
for each such subclassification thereof throughout the district.
Such assessments shall be subject to change annually and
shall be collected by the Treasurer of Baltimore County, as
hereinafter set forth, excepting the water service rates, which
shall be collected as already specified in Section 332. For
those water supply systems not falling under the provisions
of Sections 331 and 332 but constructed and operated by the
Commissioners, water service rates shall be established by the
Commissioners. All front foot assessments shall run for an
equal term of years; provided, however, that any property
owner may, at his option within one year from the time said
front foot assessment or benefit charge is levied, extinguish
the same by the payment in cash, in one sum, of the propor-
tion of the estimated cost of the project of which the con-
struction abutting upon his property is a part, represented
by the number of front feet with which he is assessed, with
interest at the rate of six per cent per annum from the date
of said levy, less any annual payment that may have been
made thereon. The Commissioners, however, in estimating
said cost for the purposes of extinguishment, may add thereto
a reasonable margin to protect themselves against possible
changes in the cost of construction and the loss of interest.