O-85-1151 - 2/28/1985ORDINANCE NO //51
AN ORDINANCE AMENDING CHAPTER 8, SECTION 6.I.(2), CODE OF
ORDINANCES, CITY OF ROUND ROCK TO AMEND REQUIREMENTS FOR
EROSION AND SEDIMENTATION CONTROL; PROVIDING FOR A SAVINGS
CLAUSE AND REPEALING CONFLICTING ORDINANCES.
BE IT ORDAINED BY THE COUNCIL OF THE CITY OF ROUND ROCK, TEXAS,
I.
That Chapter 8, Section 6.I.(2)(iii), Code of Ordinances, Round
Rock, Texas, is hereby amended to read as follows:
(iii)(1) Major collector drainageways, detention ponds, and
related structures may utilize either existing
natural open sections which may be modified, or
newly constructed facilities. If modified or newly
constructed facilities are utilized, they shall be
lined with permanent materials including, but not
limited to: concrete or vegetation. (See
subparagraph (v) below for special conditions and
exceptions for vegetation.)
(2) Vegetated channels shall have sufficient grade to
provide velocities that will allow self cleaning
but will not be so great as to create erosion.
Side slopes shall not be steeper than 3 to 1 to
allow for future growth and to promote slope
stability. All slopes shall be hydromulched,
sodded or seeded with approved grass, grass
mixtures or ground cover suitable to the area and
season in which they are applied.
(3) Sodding shall be St. Augustine or Bermuda with
sufficient soil attached to sustain growth and
must be alive at the time of application.
(4) Hydromulch shall be applied as follows:
Between April 15 and October 1, for each 1,000
square feet, two (2) pounds of hulled Bermuda
seed,and twenty (20) pounds of fertilizer (16 -20 -0
with magnesium and sulfur.) On slopes, add forty
(40) pounds of cellulose fiber mulch and one -half
(1/2) pounds of Hydro -Tack soil binder or
acceptable substitute.
Between October 1 and April 15, for each 1,000
square feet, six (6) pounds Rye grass seed, twenty
(20) pounds of fertilizer (15 -10 -10 with magnesium
and sulfur,). On slopes add forty (40) pounds of
cellulose fiber mulch and one -half pound of
Hydro -Tack soil binder or acceptable substitute.
As soon as practical after April 15 the April 15
to October 1 application described above must also
be made, provided however surfaces must be
reshaped to original configuration prior to the
second application.
Bydromulch growth must be established over 85% of
applied areas prior to acceptance of subdivision
improvements by the City, with no exposed area
exceeding ten (10) square feet.
"Established growth" shall mean the
vegetation has reached a height of one and
one -half (1 1/2 ") inches and is of a density
such that it can be reasonably expected to be
self sustaining.
II.
That Chapter 8, Section 6.I.(2)(v), Code of Ordinances, Round
Rock, Texas, is hereby amended to read as follows:
(v) If in the opinion of the City Engineer, weather
conditions, such as drought, excess precipitation
or extreme heat or cold, are unsuitable for
hydromulching or sodding, such applications shall
be deferred by the developer. Under these
circumstances, subdivision improvements may be
accepted upon the provision of a letter of credit
in a form acceptable to the City Attorney, in an
amount of twice the City Engineer's estimated cost
of the sodding or hydromulch application and where
appropriate, surface reshaping and maintenance,
and reapplication. If the developer is unable to
meet the requirements of subparagraph (iii) above
within nine months of subdivision accceptance the
letter of credit will be drawn on and the proceeds
used to obtain the required vegetation cover.
The developer shall be required to use concrete or
similar permanent cover in lieu of vegetation if
the City Engineer determines that future
maintenance is materially impaired or where
channel bends and intersections, flow dissipation
or similar circumstances so warrant.
III.
A. The invalidity of any section or provision of this ordinance
shall not invalidate other sections or provisions thereof.
B. All ordinances, parts of ordinances, or resolutions in
conflict herewith are expressly repealed.
Is (Mark through the following alternative that is not applicable)
Alternative 1.
By motion duly made, seconded and passed with an affirmative vote
of all the Council members present, the requirement for reading this
ordinance on two separate days was dispensed with. �7D
READ, PASSED, and ADOPTED on first reading this oA0 T � day
of ' �U U , 1985.
Alternative 2.
READ and APPROVED on first reading this this day
of , 1985.
READ, APPROVED and ADOPTED ,on second reading this the day
of , 1985.
1
ATTEST:
NNE LAND, City Secretary
MIKE ROBINSON, Mayor
City of Round Rock, Texas