1316                            Laws of Maryland                       [Ch. 792

ply, sewerage and drainage system so to be constructed, purchased
or established as aforesaid, and to fix an annual assessment on all
properties, improved or unimproved, binding upon a street, road,
lane, alley or right-of-way in which a water main, sewer or drain
has been built. Said benefit charge shall be paid annually, beginning
from the time of the levy thereof, by all properties located as above
specified, for a period of years co-extensive with the period of matur-
ity of the bonds out of the proceeds of which such construction was
done. Said benefit charge may be extinguished or redeemed, at any
time, upon the payment to the said Commission of a sum equal to
the amount of said annual benefit charge multiplied by the number
of years that it has yet to run, less the interest to be computed at
the rate of interest of the bonds out of the proceeds of which the
construction upon which said benefit charge is based, was done,
calculated annually on the amount of such annual front foot benefit
charge; and upon the receipt of such sum, or sums, from the ex-
tinguishment or redemption of one or more front foot benefit charges,
the Commission shall deposit said funds in the ''Sinking Fund" ac-
count.

516 (u) Whenever through error, inadvertence or oversight or by
reason of any judgment or Decree of any Court any property sub-
ject to a front foot benefit charge under this sub-title has not had
the same levied against it or where the same has been levied by an
erroneous description, or in the wrong name, or where the same has
been set aside by a judgment or decree, the Commission may upon
the discovery of said error, inadvertence, oversight, or within a rea-
sonable time after the rendition of said judgment or decree, levy the
front foot benefit charge at the rate and in the classification that the
same was originally entitled or may be prescribed by a Court Decree
and said front foot benefit charge shall thereupon run for the same
number of years for which it would have run if levied at the proper
time or in the proper manner; and this section shall apply to all
errors, omissions, or mistakes heretofore made by said Commis-
sion, or to any judgment or decree heretofore rendered, provided,
however, that where annual payments of front foot assessments have
previously been paid on such property, the number of years for
which such payments have been made shall be deducted from the
total number of years for which such assessments herein provided
are entitled to run.

516 (v) The Commissioners from time to time shall cause surveys,
studies, plans and estimates to be made for water supply, sewerage
systems in all those parts of the Anne Arundel County Sanitary Dis-
trict in which there is, in their judgment, a need for water supply
or sewerage system, or any part thereof, in any part of the District
the Commissioners shall proceed to construct or cause to be con-
structed such systems or any part thereof. The Chief Engineer shall
make a field inspection of the territory proposed to be served by the
new construction or extension, and shall prepare sufficient plans upon
which to make an adequate cost estimate of the proposed construc-
tion or extension, together with estimates in writing of the revenues
to be expected therefrom by assessments and charges of any kind
authorized by the sub-heading. Such plans and estimates shall accom-
pany his written recommendations and shall be filed by him in the
office of the Commissioners. If said plans and estimates fail to show