| (29) Maintenance checklist--A document made available
to the irrigation system's owner or owner's representative that contains
information regarding the operation and maintenance of the irrigation
system, including, but not limited to: checking and repairing the
irrigation system, setting the automatic controller, checking the
rain or moisture sensor, cleaning filters, pruning grass and plants
away from irrigation emitters, using and operating the irrigation
system, the precipitation rates of each irrigation zone within the
system, any water conservation measures currently in effect from the
water purveyor, the name of the water purveyor, a suggested seasonal
or monthly watering schedule based on current evapotranspiration data
for the geographic region, and the minimum water requirements for
the plant material in each zone based on the soil type and plant material
where the system is installed.
(30) Major maintenance, alteration, repair, or service--Any
activity that involves opening to the atmosphere the irrigation main
line at any point prior to the discharge side of any irrigation zone
control valve. This includes, but is not limited to, repairing or
connecting into a main supply pipe, replacing a zone control valve,
or repairing a zone control valve in a manner that opens the system
to the atmosphere.
(31) Master valve--A control valve located after the
backflow prevention assembly that controls the flow of water to the
irrigation system mainline.
(32) Matched precipitation rate--The condition in which
all sprinkler heads within an irrigation zone apply water at the same
rate
(33) New installation--An irrigation system installed
at a location where one did not previously exist or is a complete
replacement of an existing irrigation system.
(34) Non-health hazard--A cross-connection, potential
contamination hazard, or other situation involving any substance that
generally will not be a health hazard but will constitute a nuisance
or be aesthetically objectionable if introduced into the public water
supply.
(35) Non-potable water--Water that is not suitable
for human consumption. Non-potable water sources include, but are
not limited to, irrigation systems, lakes, ponds, streams, gray water,
water condensate from cooling towers, reclaimed water, and harvested
rainwater.
(36) Pass-through contract--A written contract between
a contractor or builder and a licensed irrigator or exempt business
owner to perform part or all of the irrigation services. A pass-through
contract is also referred to as a sub-contract.
(37) Potable water--Water that is suitable for human
consumption and meets the definition of drinking water in §290.38(23)
of this title (relating to Definitions)).
(38) Pressure Vacuum Breaker--An assembly that contains
an independently operating internally loaded check valve and an independently
operating loaded air inlet valve located on the discharge side of
the check valve. Also known as a Pressure Vacuum Breaker Back-siphonage
Prevention Assembly.
(39) Reclaimed water--Domestic or municipal wastewater
which has been treated to a quality suitable for beneficial use, such
as landscape irrigation.
(40) Records of landscape irrigation activities--The
irrigation plans, contracts, warranty information, invoices, copies
of permits, and all other documents that relate to irrigation services.
(41) Reduced Pressure Principle Backflow Prevention
Assembly--An assembly containing two independently acting approved
check valves together with a hydraulically operating mechanically
independent pressure differential relief valve located between the
two check valves and below the first check valve.
(42) Static water pressure--The pressure of water when
it is not moving. Generally, this is the pressure available to the
irrigation system.
(43) Supervision--The on-the-job oversight and direction
by a licensed irrigator who is fulfilling his or her professional
responsibility to the client and/or employer in compliance with local
and state requirements. Also performed by a licensed irrigation technician
who is working under the direction of a licensed irrigator to perform
irrigation services.
(44) Temporary Irrigation System - A temporarily installed,
above ground system of pipes and component parts used to distribute
water to the landscaping of a site for the establishment of plant
growth, reduction of dust, and erosion control. Temporary irrigation
systems must meet the requirements in §344.66 of this title (relating
to Temporary Irrigation Systems).
(45) Water conservation--The design, installation,
service, and operation of an irrigation system in a manner that prevents
the waste of water, promotes the most efficient use of water, and
applies the least amount of water that is required to maintain healthy
individual plant material or turf, reduce dust, and control erosion.
(46) Zone flow--A measurement, in gallons per minute
or gallons per hour, of the actual flow of water through a zone valve,
calculated by individually opening each zone valve and obtaining a
valid reading after the pressure has stabilized. For design purposes,
the zone flow is the total flow of all nozzles in the zone at a specific
pressure.
(47) Zone valve--An automatic valve that controls a
single zone of a landscape irrigation system.
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