382                              Laws of Maryland                       [Ch. 282

January of the year in which the project was completed upon all
property in said [sanitary] district abutting upon said water main
or sewer, in accordance with the classification or subdivision thereof,
and shall in writing, notify all owners of said properties into which
class and subdivision their respective properties fall and the charge
determined upon, naming also in said notice a time and place, when
and at which time said owner will be heard. Such notice may be
mailed to the last known address of the owner, or served in person
upon any adult occupying the premises or in case of a vacant or
unimproved property posted upon the premises.

(b)  The classification of and the benefit assessed against any
property as made by the Commission shall be final, subject only to
revision at said hearing. The Commission may change the classifica-
tion of property from time to time as said properties change in the
uses to which they are put. Said benefits shall be levied for both water
supply and sewerage construction and shall be based for each class
of property upon the number of front feet abutting upon the street,
lane, road, alley or right-of-way in which the water pipe or sewer
is placed; provided, however, that in the case of any irregular shaped
lot abutting upon a road, street, lane, alley or right-of-way in which
there is or is being constructed a water main or sewer at any point,
said lot shall be assessed for such frontage as the Commission may
determine to be reasonable and fair; and provided further that no
lot in a subdivision property shall be assessed on more than one side,
unless said lot abuts upon two parallel streets, that corner lots may
be averaged and assessed upon such frontage as the Commission
may deem reasonable and fair, and that all lots in this class shall be
assessed even though a water main or sewer may not extend along
the full length of any boundary; and provided further that land so
qualified as agricultural by this Commission shall be assessed a front
foot benefit on the first one hundred and fifty (150) feet at a rate
set by the Commission. The assessment for the next one hundred and
fifty (150) feet shall be set by the Commission at a lower rate than
the first one hundred and fifty (150) feet, and a frontage in excess
of three hundred (300) feet shall be assessed at a rate not to exceed
twenty-five per centum (25%) of the rate set for the first one hun-
dred and fifty (150) feet when said agricultural land has constructed
through it or in front of it a sewer or water main, until such time
as the water and sewer connection is made, and when so made and
for every connection such land shall become liable to a front foot
assessment as may be determined by said Commission for agricul-
tural land. Front foot benefit charges for water supply and sewerage
construction shall be as nearly uniform as is reasonably practical for
each class or sub-class of property throughout each district for any
one year and no benefit charge, once levied, shall be increased; pro-
vided, however, that whenever the Commission acquires an existing
system other than a municipal system, the construction of which has
been added in whole or in part to the purchase price of land or lots
abutting upon said system and which contribution the Commission
has determined to be a factor in the cost to the Commission of such
system, the Commission may, in its discretion, levy a front foot
assessment less than the uniform front foot assessment levied in the
remainder of the [sanitary] district in which said system is located.

(c)  The amount of the charge per front foot for each class of
property for both water mains and sewers may be reduced from time
to time by the Commission in its discretion, if costs and conditions