530 LAWS OF MARYLAND. [CH. 450

Million Dollars (f 1, 000, 000. 00), which bonds shall be in addi-
tion to any bonds authorized to be issued under said Chapter
122, or any amendments thereof, and shall be registered or
coupon bonds in such denominations as shall be determined by
the said Commission, and shall bear interest at a rate not
exceeding four (4) per cent per annum, payable semi-annually,
and shall be retired serially, the last bond to be retired not
later than forty (40) years from the date of issue. Said Com-
mission may offer for sale and issue said bonds, from time to
time, as its necessity requires. Said bonds ^hall be issued
under the same provisions, limitations and restrictions, appli-
cable to the bonds heretofore issued by said Commission under
the provisions of said Chapter 122, and shall be exempt from
all State, County and Municipal taxation. The said bonds
shall be guaranteed, as to the payment of principal and
interest, by the County Commissioners of both Montgomery
and Prince George's Counties, which guarantee shall be in the
form and under the provisions of Section 5 of said Chapter 122,
or any amendment thereof. Said bonds shall not require the
approval of the Public Service Commission of Maryland.

SEC. 2. And be it further enacted, That the proceeds of said
bonds shall be used for the purpose of enlarging, increasing
and augmenting the water supply of the area served by said
Commission, including the construction of any impounding
reservoir, filter plant or pumping station, and all the necessary
pipe lines and accessories appurtenant thereto..

SEC. 3. And be it further enacted, That for the purpose of
retiring the bonds authorized to be issued by this Act, and
payment of the interest thereon, there shall be levied against
all of the assessable property within the Sanitary District, by
. the County Commissioners of Montgomery and Prince George's
Counties, annually, so long as said bonds are outstanding and
not paid, a tax sufficient to meet the interest on said bonds,
and to pay the principal thereof as the said principal and
interest mature or become due; said tax to be determined,
levied, collected and paid over to the said Commission in the
manner provided by Section 6 of said Chapter 122, or any
amendment thereof, and all of the provisions of said Section 6
shall apply to the bonds issued hereunder.

SEC. 4. And be it -further enacted, That said Commission
shall annually determine the amount necessary to pay the
principal and interest requirements of said bonds, and shall
annually fix the water service charge of said District at such
a sum as to produce, in addition to the costs of said service,
and the requirements of any other bonds issued and outstand-
ing the annual requirements of which are to be paid out of