Irrigation

Question 1

A double check assembly may be used in irrigation systems with ____ ____ of a ____ ____. If a double check assembly is installed below grade, a ____ must be installed on the inlet side of the unit.

Answer 1

no threat of a health hazard
Y-strainer

Question 2

An RP back-flow device must be used if there are any ____ ____, if there is ____ ____ ____ water source, if there are chemicals added by ____, ____, or ____, or if there is an ____ system on site.

Answer 2

chemicals added
more than one
aspiration, injection, emission
OSSF

Question 3

Piping and valves must meet separation distances from an ____ system.

Answer 3

OSSF

Question 4

If a master valve is used, it must be installed downstream from the ____ device.

Answer 4

backflow

Question 5

New irrigation systems may not use spray emission devices in landscapes less than ___ inches across in width or length.

Answer 5

48”

Question 6

Above ground sprinklers may not be installed closer than ___ inches from any hardscape.

Answer 6

4”

Question 7

Sprinklers may not directly spray on or over surfaces such as ____, ____ ____, ____, ____, ____, ____, et cetera.

Answer 7

concrete, building structures, walls, fences, sidewalks, streets

Question 8

All irrigations systems must have a ____ or moisture ____ ____ ____ or sensor. Repairs that require replacing the controller require ____ ___ ____ if not already in place.

Answer 8

rain
shut off device
installing a sensor

Question 9

All new irrigation systems require an ____ valve.

Answer 9

isolation

Question 10

Minimum irrigation system depth is ___ inches and ___ inches if there are unavoidable roots, utilities, or other obstacles.

Answer 10

6”
2”

Question 11

All electrical wiring in irrigation systems must be ____ ____ for ____ ____ and buried a minimum of ___.

Answer 11

UL approved for direct burial
6”

Question 12

____ or ____ water usage such as ____ ____ or ____ ____ shall not be connected to an irrigation system.

Answer 12

Drinking or domestic
swimming pools
decorative fountains

Question 13

A licensed ____ or ____ ____ shall be onsite when an irrigation system is installed.

Answer 13

irrigator or irrigation technician

Question 14

Upon completion of an irrigation system, the irrigator must furnish a final ____, a ____ checklist, a ____ ____ on the _____, and an ____ ____.

Answer 14

final walkthrough
maintenance checklist
service sticker on the controller
as-built plan

Question 15

When repairs are completed at the water meter or back-flow device, an ____ ____ must be installed if there is not already one present.

Answer 15

isolation valve

Question 16

All vehicles used in irrigation installation or repair must display their ____ ____ in the form of ___ ____ in ____ color of block letters at least ___ inches high in both sides of the vehicle. All forms of ____ and ____ ____ must display this as well.

Answer 16

license number
LI-“license number”
contrasting color
2”
written and electronic advertisement

Question 17

All ____ must be in writing and ____ ____ ____ and a ____ shall be furnished in all new irrigations systems. Both documents must include the following: “Irrigation in Texas is regulated by the ____ ____ ____ ____ ____ (____), MC-178, PO BOX 13087, Austin, TX 78711-3087. Agency website is ____.”

Answer 17

contracts
signed by both parties
warranty
Texas Commission on Environmental Quality (TCEQ)
www.tceq.state.tx.us