The regulations, restrictions and requirements of this chapter
are intended to promote the general health, safety, convenience, and
welfare of the residents of the City. Such regulations, restrictions,
and requirements are deemed necessary to conserve and stabilize the
value of property all in accordance with the powers of municipalities.
The following design criteria shall be used for developing a drainage plan for areas outlined in §
212-2.
A. All storm drainage computations will be performed using the one-hundred-year
frequency — twenty-four-hour duration storm event as defined
by the NOAA Atlas 2, Volume IV for New Mexico.
B. Peak discharge and volumetric stormwater runoff values shall be estimated
for predeveloped as well as post-developed site conditions.
C. Peak discharge and volumetric stormwater runoff values shall be estimated
for all off-site areas which may impact the site.
D. All stormwater runoff shall be estimated using methodology which
is considered a standard of practice in the engineering field and
deemed as such by the City Engineer.
E. The plan shall include a scheme for controlling the increased runoff
from pre-developed to post-developed conditions. The increased runoff
must be controlled on site. Stormwater runoff which is allowed to
discharge from the site must leave the site at the existing flow path
or discharge point on the site. In no instance shall stormwater runoff
be released from a site which may adversely impact the downstream
capacity of any drainage structure by either peak rate of flow or
volume.
F. All plans shall include a copy of the appropriate FEMA (Flood Insurance
Rate Map) panel on the plan to indicate that the site does not lie
within a designated one-hundred-year floodplain. All improvements
shall be constructed so as not to be built within a designated one-hundred-year
floodplain. Any revisions to the floodplain maps shall be the responsibility
of the developer.
G. All roads shall have a minimum width of 12 feet free from flowing
stormwater runoff during the one-hundred-year storm event for emergency
vehicle access.
The fee for the drainage plans shall be $300 for up to the first
five acres of land within the project, plus $10 per acre for each
to be paid at the time the drainage plan is submitted for review by
the City Engineer.
A finished drainage product shall be certified as record drawings
by a registered professional engineer before final acceptance by the
City.
It shall be the sole responsibility of the developer to properly
maintain all drainage facilities constructed. This includes, but is
not limited to, drainage ponds, storm sewers, manholes and drop inlets.
The provisions of this chapter are held to be minimum requirements
to carry out the purpose of this chapter and are not intended to interfere
with, abrogate, or annul any easement, covenant, or other valid ordinance.
Any person violating any of the provisions for this chapter
shall, upon conviction, be subject to a fine not exceeding $500 or
imprisonment for a period not exceeding 90 days, or both such fine
and imprisonment. Any violations which continued for a period for
15 days after conviction shall be prosecuted and treated as a repeated
offense.