The following words and terms, when used in this chapter, have
the following meanings, unless the context clearly indicates otherwise.
(1) Air gap--The unobstructed vertical distance through
the free atmosphere between the lowest opening from any pipe or faucet
conveying water to a tank, fixture, receptor, sink, or other assembly
and the flood level rim of the receptacle. The vertical, physical
separation must be at least twice the diameter of the water supply
outlet, but never less than 1.0 inch.
(2) As-built drawing--The final irrigation plan produced
at the completion of an irrigation system installation and provided
to the irrigation system's owner or the owner's representative. The
as-built drawing(s) will reflect all changes made to the original
irrigation plan and/or specifications during the construction process
and show all aspects of the irrigation system including the dimensions,
geometry, and location of all elements of the irrigation system. May
be referred to as "record drawings" or "as-builts."
(3) Backflow prevention--The prevention of the reversal
of flow, due to back siphonage or backpressure, of nonpotable water
from an irrigation system into the potable water supply.
(4) Backflow prevention assembly--A mechanical assembly
used to prevent backflow into a potable water system. The type of
assembly used is based on the degree of hazard (health hazard or non-health
hazard) and hydraulic conditions.
(5) Completion of irrigation system installation--When
the landscape irrigation system has been installed, all minimum standards
met, all tests performed, and the irrigator is satisfied that the
system is operating correctly.
(6) Consulting--The act of providing advice, guidance,
review or recommendations related to landscape irrigation systems.
(7) Cross-connection--A physical connection between
a public water system and either another supply of unknown or questionable
quality, any source which may contain contaminating or polluting substances,
or any source of water treated to a lesser degree in the treatment
process.
(8) Design--The act of determining the various elements
of a landscape irrigation system that will include, but not limited
to, elements such as collecting site specific information, defining
the scope of the project, defining plant watering needs, selecting
and laying out emission devices, locating system components, conducting
hydraulic calculations, identifying any local regulatory requirements,
or scheduling irrigation work at a site. Completion of the various
components will result in an irrigation plan.
(9) Design pressure--The pressure that is required
for an emission device to operate properly and in conjunction with
the head-to-head spacing requirement. Design pressure is the sum of
the minimum operating pressure of an emission device to the total
of all pressure losses accumulated from the emission device to the
water source.
(10) Double Check Valve Assembly--An assembly that
is composed of two independently acting, check valves, including tightly
closing resilient seated shutoff valves attached at each end of the
assembly and fitted with properly located resilient seated test cocks.
Also known as a Double Check Valve Backflow Prevention Assembly.
(11) Emission device--Any device that is contained
within an irrigation system and that is used to apply water. Common
emission devices in an irrigation system include, but are not limited
to, spray and rotary sprinkler heads, and drip irrigation emitters.
(12) Employed--The state of being engaged or hired
to provide irrigation services and of being in an employer-employee
relationship as defined by Internal Revenue Code, 26 United States
Code Service, §3212(d) based on the behavioral control, financial
control, and the type of relationship involved in performing employment
related tasks.
(13) Exempt business owner--an owner of a business
who employs a licensed irrigator to supervise the irrigation services
performed by the business as referenced in Texas Occupations Code,
Chapter 1903.
(14) Graywater--wastewater from showers, bathtubs,
handwashing lavatories, sinks that are used for disposal of household
or domestic products, sinks that are not used for food preparation
or disposal, and clothes-washing machines. Graywater does not include
wastewater from the washing of material, including diapers, soiled
with human excreta or wastewater that has come into contact with toilet
waste.
(15) Head-to-head spacing--The spacing of emission
devices such that the distance between them is within the manufacturer's
published radius range and the water spray reaches from device to
device. A deviation of 10% or less is acceptable.
(16) Health hazard--A cross-connection, potential contamination
hazard, or other situation involving any substance that can cause
death, illness, spread of disease, or has a high probability of causing
such effects if introduced into the potable drinking water supply.
(17) Hydraulics--The science of dynamic and static
water; the mathematical computation of pressure losses and/or pressure
requirements of an irrigation system.
(18) Irrigation inspector--A water district operator,
governmental entity, or licensed irrigation inspector who inspects
irrigation systems and performs other enforcement duties for a municipality
or water district and is required to be licensed under Chapter 30
of this title (relating to Occupational Licenses and Registrations)
or a licensed plumbing inspector.
(19) Irrigation plan--A scaled drawing of a new landscape
irrigation system to be installed. The irrigation plan shall meet
all the requirements in §§344.60 - 344.65 of this title
(relating to Water Conservation; Minimum Standards for the Design
of the Irrigation Plan; Minimum Design and Installation Requirements;
Completion of Irrigation System Installation; Maintenance, Alteration,
Repair, or Service of Irrigation Systems; and Reclaimed Water) and
is provided as an as-built drawing to the owner or owner's representative
upon completion of the irrigation system installation.
(20) Irrigation services--All activities involving
an irrigation system including, selling, designing, installing, maintaining,
altering, repairing, servicing, permitting, consulting services, or
connecting an irrigation system to a water supply.
(21) Irrigation system--A system permanently installed
on a site and that is composed of an assembly of component parts for
the controlled distribution and conservation of water to irrigate,
reduce dust, and control erosion in any type of landscape vegetation
in any location. This term includes sprinklers and sprinkler systems
used for irrigation. This term does not include a system that is used
on or by an agricultural operation as defined by Texas Agricultural
Code, §251.002.
(22) Irrigation technician--A person who works under
the supervision of a licensed irrigator to perform irrigation services
including the connection of an irrigation system to a private or public,
raw or potable water supply system or any other water supply, and
who is required to be licensed under Chapter 30 of this title (relating
to Occupational Licenses and Registrations).
(23) Irrigation zone--A subdivision of an irrigation
system with a matched precipitation rate based on plant type (turf,
shrubs, or trees), microclimate (sun/shade ratio), topographic features,
soil type (sand, loam, clay, or combination), and hydrological control.
(24) Irrigator--A person who performs irrigation services
and/or supervises the installation of an irrigation system, including
the connection of such system to a private or public, raw or potable
water supply system or any water supply, and who is required to be
licensed under Chapter 30 of this title (relating to Occupational
Licenses and Registrations).
(25) Irrigator-in-Charge--The irrigator responsible
for all irrigation work performed by an exempt business owner, including,
but not limited to obtaining permits, developing design plans, supervising
the work of other irrigators or irrigation technicians, and installing,
selling, maintaining, altering, repairing, or servicing a landscape
irrigation system.
(26) Landscape irrigation--The science of applying
the necessary amount of water to promote or sustain healthy growth
of plant material or turf.
(27) License--An occupational license that is issued
by the commission under Chapter 30 of this title (relating to Occupational
Licenses and Registrations) to an individual that authorizes the individual
to engage in an activity that is covered by this chapter.
(28) Mainline--A pipe within an irrigation system that
delivers water from the water source to the individual zone valves.
Cont'd... |
