Supp. 03-2

Historical Note

New Section adopted by final rulemaking at 5 A.A.R. 802, effective February 24, 1999 (Supp. 99-1). Amended by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

R4-48-102. Incorporation of the Uniform Plumbing Code by Reference

A. All persons shall comply with the International Association of Plumbing and Mechanical Officials' (I.A.P.M.O.) Uniform Plumbing Code (1994 Edition) which is incorporated by reference, including appendices A through J, and installation standards, as the state plumbing code. This incorporation by reference does not include any later amendments or editions. Copies of the incorporated material are available from I.A.P.M.O., 20001 Walnut Drive South, Walnut, CA, 91789-2825 and are on file with Arizona Uniform Plumbing Code Commission and the Office of the Secretary of State.

B. The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

Delete pages: one through 14, after making all modifications in this Article.

Historical Note

New Section adopted by final rulemaking at 5 A.A.R. 802, effective February 24, 1999 (Supp. 99-1). Amended by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

Table A. Repealed

Historical Note

New Table A adopted by final rulemaking at 5 A.A.R. 802, effective February 24, 1999 (Supp. 99-1). Table A repealed by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

Table B. Repealed

Historical Note

New Table B adopted by final rulemaking at 5 A.A.R. 802, effective February 24, 1999 (Supp. 99-1). Table B repealed by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

Illustration A. Repealed

Historical Note

New Illustration A adopted by final rulemaking at 5 A.A.R. 802, effective February 24, 1999 (Supp. 99-1). Illustration A repealed by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-103. Chapter 3, General Provisions

A. The rules of this Article are adopted under A.R.S. § 41-619, which provides for the adoption statewide of the Uniform Plumbing Code ("Code"). The rules do not specify the procedures by which the Code will be enforced, which may be governed by other provisions of state law. The rules do not supersede, restrict, or negate the authority of any state agency, municipality, or county to administer, delegate, or enforce laws, statutes, rules, or ordinances within its respective jurisdiction.

B. The Uniform Plumbing Code incorporated in R4-48-102(A), is modified as follows:

1. Move Sec. 101.4.1.3 to a new Sec. 301.1.5.

2. Move Sec. 101.5.2 to a new Sec. 301.1.6.

3. Move Sec. 101.5.4 to a new Sec. 301.1.7.

4. Move Sec. 101.5.5 to a new Sec. 301.1.8.

5. Move Sec. 103.5 to a new Sec. 318.0.

6. Move Sec. 103.5.1 to a new Sec. 318.1.

7. Move Sec. 103.5.1.2 to a new Sec. 318.2.

8. Move Sec. 103.5.1.3 to a new Sec. 318.3.

9. Move Sec. 103.5.1.4 to a new Sec. 318.4.

10. Move Sec. 103.5.5 to a new Sec. 318.5.

11. Move Sec. 103.5.5.1 to a new Sec. 318.6.

12. Move Sec. 103.5.5.2 to a new Sec. 318.7.

13. Move Sec. 103.5.3 to a new Sec. 319.0.

14. Move Sec. 103.5.3.1 to a new Sec. 319.1.

15. Move Sec. 103.5.3.2 to a new Sec. 319.2.

16. Move Sec. 103.5.3.4 to a new Sec. 319.3.

17. Move Sec. 103.5.3.5 to a new Sec. 319.4.

18. Move Sec. 103.5.3.7 to a new Sec. 319.5.

19. Move Sec. 103.5.6.1 to a new Sec. 319.6.

20. Move Sec. 103.5.6.2 to a new Sec. 319.7.

21. Move Sec. 103.5.6.3 to a new Sec. 319.8.

22. Move Sec. 712.4 to a new Sec. 320.0.

23. Move Sec. 712.4.1 to a new Sec. 320.1.

24. Move Sec. 712.4.2 to a new Sec. 320.2.

25. Move Sec. 712.4.3 to a new Sec. 320.3.

26. Move Sec. 712.4.4 to a new Sec. 320.4.

27. Move Sec. 103.6 to a new Sec. 321.0.

28. Move Sec. 103.6.1 to a new Sec. 321.1.

29. Move Sec. 103.6.2 to a new Sec. 321.2.

30. Move Sec. 103.6.3 to a new Sec. 321.3.

31. Add three new rows to Table 3-1. Refer to Table A - Materials and Types of Joints (Horizontal and Vertical).

32. Sec. 316.1.5 is modified to read:

Solvent Cement Plastic Pipe Joints. Plastic pipe and fittings designed to be joined by solvent cementing shall comply with appropriate IAPMO Installation Standards.

ABS pipe and fittings shall be cleaned and then joined with listed solvent cement(s).

CPVC pipe and fittings shall be cleaned and joined with listed primer(s) and solvent cement(s).

Exception: Listed solvent cements that do not require the use of a primer shall be permitted for use with CPVC pipe and fittings 1/2" through 2" in diameter, manufactured in accordance with ASTM D 2846/D 2846M-99, which is incorporated by reference and published by American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. This incorporation by reference does not include any later amendments or editions.

PVC pipe and fittings shall be cleaned and joined with listed primer(s) and solvent cement(s) conforming to ASTM F 493-97, which is incorporated by reference and published by American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. This incorporation by reference does not include any later amendments or editions.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

Table A. Materials and Types of Joints (Horizontal and Vertical)

 

Materials	Type of Joints	Horizontal	Vertical
PEX	Mechanical	One inch (25.4mm) and smaller, Three feet (0.9 m), 1-1/4 inch (31.8mm) and larger four feet (1.2 m).	Base and each floor. Provide mid-story guides.
PE-AL-PE	Mechanical	One inch (25.4 mm) and smaller, 98 inches (2489 mm)	Base and each floor. Provide mid-story guide.
PEX-AL-PEX	Mechanical	One inch (25.4 mm) and smaller, 98 inches (2489 mm)	Base and each floor. Provide mid-story guide.

Historical Note

New Table made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). New Table A made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

R4-48-104. Chapter 4, Plumbing Fixtures

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Sec. 402.1 is modified to read: "The maximum flow rates and quantities for all plumbing fixtures and fixture fittings shall be consistent with A.R.S. Title 45, Chapter 1, Article 12."

2. Sec. 402.2 is deleted.

Historical Note

New Section adopted by final rulemaking at 5 A.A.R. 4309, effective October 18, 1999 (Supp. 99-4). Section repealed; new Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

Table A. Repealed

Historical Note

Table A adopted by final rulemaking at 5 A.A.R. 4309, effective October 18, 1999 (Supp. 99-4). Table A repealed by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

Table B. Repealed

Historical Note

Table B adopted by final rulemaking at 5 A.A.R. 4309, effective October 18, 1999 (Supp. 99-4). Table B repealed by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-105. Chapter 5, Water Heaters

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Sec. 501.0 is modified to read: "General. The regulations of this chapter shall govern the construction, location, and installation of all fuel-burning and other water heaters heating potable water, together with all chimneys, vents, and their connectors. All design, construction, and workmanship shall be in conformity with accepted engineering practices and shall be of such character as to secure the results sought to be obtained by this Code. No water heater shall be hereinafter installed which does not comply in all respects with the type and model of each size thereof approved by the Administrative Authority. A list of generally accepted gas equipment standards is included in Table 14-1. A water heater (boiler) which exceeds any of the following limitations shall not be placed in service until the vessel is separately inspected pursuant to A.R.S. Title 23, Chapter 2, Article 11.

(a) 120-gallon (454.2L) nominal water capacity.

(b) 160 PSI (1,103.2 kPa) operating pressure.

(c) 210° F (98.9° C) operating temperature.

(d) 200,000 btu/h (58,620W) heat input.

2. Sec. 507.2 is modified to read: "In new construction, all enclosed buildings shall be provided with combustion air obtained from outside. In existing buildings of ordinary tightness insofar as infiltration is concerned, all or a portion of the combustion air for fuel-burning water heaters may be obtained from infiltration if the enclosure volume equals at least 50 cubic feet per 1000 btu/h (4.831L/W) input of the water heater. Existing buildings of unusually tight construction shall also be provided with outside combustion air. No change in combustion air is required when an existing fuel-burning water heater is replaced with a new water heater having the same or smaller btu/h input capacity. When an existing fuel-burning water heater is replaced by a higher-capacity water heater, or when additional fuel burning water heaters are installed in an existing building containing other fuel-burning appliances, the room or space shall be provided with combustion air as required for new construction.

3. Sec. 507.3.1. Add an exception to read: "Combustion air openings may be provided in an outside door provided:

(a) The door is not less than two feet in width and six feet eight inches in height; and

(b) The openings are spaced as far apart as possible or a full louvered door is provided; and

(c) The equipment room ceiling is not more than 16 inches above the top of the door.

4. Sec. 507.6 is added to read: "Liquefied Petroleum Gas (LPG). All provisions of this chapter shall apply to combustion air for equipment using liquefied petroleum gas. Exceptions:

(a) The bottom of the lower combustion air opening shall be located at or below the floor of the room containing LPG-fueled equipment.

(b) The lower combustion air duct, when used, shall have the bottom installed level or with a downward slope, starting from a point at or below the equipment room floor and continuing to the outside of the structure. The duct shall terminate above the finish grade, and shall be provided with wire mesh screen to cover the opening.

(c) No pockets or trapped sections shall be permitted in any lower combustion air duct.

5. Table 5-1 is modified. Refer to Table A - Size of Combustion Air Openings or Ducts for Gas - or Liquid-Burning Water Heaters.

6. Sec. 517.6 is modified to read: "No venting system shall terminate less than three feet (0.9m) above any forced air inlet or evaporative cooler located within 10 feet (3.0m) or less than four feet (1.2m) from any property line except a public way.

Historical Note

New Section adopted by final rulemaking at 7 A.A.R. 1458, effective March 16, 2001 (Supp. 01-1). Section repealed; new Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

Table A. Size of Combustion Air Openings or Ducts for Gas- or Liquid-Burning Water Heaters

 

Column 1 Existing Buildings of Ordinary Tightness		Column 2 New Buildings and Unusually Tight Construction
Condition	Size of Opening or Duct	Condition	Size of Opening or Duct
Appliance in unconfined 2 space.	May rely on infiltration alone.	Appliance in unconfined 2 space: Obtain combustion air from outdoors or from space freely communicating with outdoors.	Provide two openings, minimum 50 sq. in. each opening. 3
Appliance in confined 4 space   1. All air from inside building.	Provide two openings into enclosure each having 1 sq. in. (645mm 2 ) per 1000 btu/h input freely communicating with other unconfined interior spaces. 3 Minimum 100 sq. in. (0.06m 2 ) each opening.	Appliance in confined 4 space: Obtain combustion air from outdoors or from space freely communicating with outdoors.	Provide two openings into enclosure, minimum 50 sq. in. each opening. 3
2. All air from outdoors: Obtain from outdoors or from space freely communicating with outdoors.	Use the methods listed for confined space as indicated in Column 2.

Notes

¹ For location of opening, see Section 507.3.

² As defined in Chapter 2.

³ When the total btu/h input rating of all enclosed appliances/equipment exceeds 100,000 btu/h, the combined net free area of all combustion air openings shall be increased by not less than 1 additional square inch (645mm) for each 1000 btu/h in excess of 100,000 btu/h.

⁴ As defined in Section 202.0.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

R4-48-107. Chapter 7, Sanitary Drainage

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Section 701.1.2 is deleted.

2. Sec. 707.4 is modified to read: Each horizontal drainage pipe shall be provided with a cleanout at its upper terminal and each run of piping, which is more than 100 feet (30.4 m) in total developed length, shall be provided with a cleanout for each 100 feet (30.4 m), or fraction thereof, in length of such piping. Exceptions:

(a) Cleanouts may be omitted on a horizontal drain line less than five feet (1.5 m) in length unless such line is serving sinks or urinals.

(b) Cleanouts may be omitted on any horizontal drainage pipe installed on a slope of 72 degrees or less from the vertical angle (angle of 1/5 bend).

(c) An approved type of two-way cleanout fitting, installed inside the building wall near the connection between the building drain and building sewer or installed outside of a building at the lower end of a building drain and extended to grade, may be substituted for an upper terminal cleanout.

3. Sec. 710.6, paragraph 1, is modified to read: Backwater valves, gate valves, motors, compressors, air tanks, and other mechanical devices required by this section shall be located where they will be accessible for inspection and repair at all times.

4. Delete Sections 712.4, 712.4.1, 712.4.2, 712.4.3, 712.4.4.

5. Sec. 713.4 is modified to read: The public sewer may be considered as not being available only when so determined by the Administrative Authority (local, county, or state).

6. Sec. 723.0 is modified to read: "Building sewers shall be tested by plugging the end of the building sewer at its points of connection with the public sewer or private sewage disposal system and completely filling the building sewer with water from the lowest to the highest point thereof or by approved equivalent low pressure air test, or by such other test as may be prescribed by the Administrative Authority. The building sewer shall be watertight at all points. Exception: Sewer tests may be waived at the discretion of the Administrative Authority.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

R4-48-108. Chapter 8, Indirect and Special Wastes

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Sec. 807.4 is modified to read: The discharge pipe of a domestic dishwashing machine may be directly connected to the tailpiece of a sink drain, or into the waste "boss" of a food waste disposer without installation of an airgap fitting. The dishwasher discharge line shall be securely fastened as high as possible, but not lower than two inches (50.8 mm) below the flood rim of the sink.

2. Sec. 807.5 is added to read: No dishwashing machine utilized for commercial purposes may be directly connected to a drainage system. Commercial dishwashers shall discharge into an approved receptor (floor sink) through an airgap of not less than one inch.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-109. Chapter 9, Vents

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Sec. 903.1.2 is deleted.

2. Sec. 909.0 is modified to read:

Special Venting

909.1 Air Admittance Valve

909.1.1 Vent systems utilizing air admittance valves shall comply with this section. Individual and branch-type air admittance valves shall conform to ASSE Standard 1051, which is incorporated by this reference and published by the American Society of Sanitary Engineering for Plumbing and Sanitary Research, 28901 Clemens Rd., Ste. 100, Westlake, OH 44145. This incorporation by reference does not include any later amendments or editions. This device shall close by gravity and seal the vent terminal at zero differential pressure (no flow condition) and under positive internal pressure. The air admittance valve provides a method of allowing air to enter the plumbing drainage system without the use of a vent extending to the open air and prevents sewer gases from escaping into the building.

909.1.2 The valves shall be installed in accordance with this section and the manufacturer's installation instructions. Air admittance valves shall be installed after the drain, waste, and vent testing required by Sections 712.2 or 712.3 has been approved by the administrative authority.

909.1.3 Individual and branch vents shall be permitted to terminate with a connection to the air admittance valve. The air admittance valve shall only be permitted to vent fixtures on the same floor, which connect to a building drain.

909.1.4 The air admittance valve shall be located at least 4" (102 mm) above the horizontal branch drain, or fixture drain being vented, within the maximum developed length permitted for the vent, and shall terminate at least 6" (152 mm) above insulation materials.

909.1.5 The air admittance valve shall be accessible for the purpose of maintenance or replacement. The valve shall be located within a space that allows air to enter the valve.

909.1.6 The air admittance valve shall be rated for the size of the vent to which it is connected.

909.1.7 Within each plumbing system utilizing air admittance valves, a minimum of one vent stack shall extend outdoors to the atmosphere.

909.1.8 Air admittance valves shall not be installed in special waste systems, as described in Chapter 8, nor in spaces used as supply or return air plenums.

909.2 Island Fixtures

Traps for island sinks and similar equipment shall be roughed in above the floor and may be vented by extending the vent as high as possible, but not less than the drainboard height and then returning it downward and connecting it to the horizontal sink drain immediately downstream from the vertical fixture drain. The return vent shall be connected to the horizontal drain through a wye-branch fitting and shall, in addition, be provided with a foot vent taken off the vertical fixture vent by means of a wye-branch immediately below the floor and extending to the nearest partition and then through the roof to the open air or may be connected to other vents at a point not less than 6" (152.4 mm) above the flood level rim of the fixtures served. Drainage fittings shall be used on all parts of the vent below the floor level and a minimum slope of 1/4" per foot (21 mm/m) back to the drain shall be maintained. The return bend used under the drainboard shall be a one piece fitting or an assembly of a 45°, a 90°, and a 45° elbow in the order named. Pipe sizing shall be as elsewhere required in this Code.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

R4-48-110. Chapter 10, Traps

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Sec. 1005.0 is modified to read: Trap Seals. Each fixture trap shall have a liquid seal of not less than two inches (50.8mm) and not more than four inches (101.6mm) except where a deeper seal is found necessary by the Administrative Authority for special conditions. Traps shall be set true with respect to their liquid seals and, where necessary, they shall be protected from freezing.

2. Sec. 1007.0 is modified to read: Trap Seal Protection. Floor drain or similar traps directly connected to the drainage system and subject to infrequent use shall be provided with an approved means of maintaining their water seals, except where not deemed necessary for safety or sanitation by the Administrative Authority. When automatic trap priming devices are installed, they shall be accessible for maintenance.

3. Sec. 1007.1 is added to read: Approved Means of Maintaining Trap Seals. Approved means of maintaining trap seals include the following, but are not limited to the methods cited:

(a) Listed Trap Seal Primer.

(b) A hose bibb or bibbs within the room.

(c) Drainage from untrapped lavatories discharging to the tailpiece of those fixture traps which require priming. All fixtures shall be in the same room and on the same floor level as the trap primer.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-111. Chapter 11, Storm Drainage

This chapter has no modifications.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-112. Chapter 12, Fuel Piping

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Sec. 1210.1 is modified to read:

All pipe used for the installation, extension, alteration, or repair of any gas piping shall be standard weight wrought iron or steel (galvanized or black) or yellow brass (containing not more than 75 percent copper) or listed corrugated stainless steel tubing systems for interior use only. Approved PE pipe may be used in exterior buried piping systems. Exception: CSST piping installed outside a building shall be sleeved, or shall be installed with protection from mechanical damage equivalent of that required for CSST piping within the building. When installed underground CSST shall be sleeved and shall have a minimum burial depth of 18 inches (457.2 mm).

2. Sec. 1211.3 modify the exception to read:

Exception: when necessary due to structural conditions, approved type gas piping may be installed in other locations, when permission has first been obtained from the administrative authority. Natural gas piping (L.P. gas piping excluded) may be installed under a slab in accordance with Illustration A when building conditions prevent above-slab installation.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

Illustration A. Gas Pipe Installation

Historical Note

New Illustration made by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

R4-48-113. Chapter 13, Special Piping and Storage Systems

This chapter has no modifications.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-114. Chapter 14, Referenced Standards

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

Table 14-1. Add standards in alphabetical order listed under appropriate sections. Refer to Table A - Plumbing Material Standards. These standards are incorporated by reference. This incorporation by reference does not include any later amendments or editions. Copies of the incorporated material are on file with the Arizona Uniform Plumbing Code Commission and the Office of the Secretary of State.

Add three new rows to Table A. Refer to Table A - Plumbing Material Standards.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

Table A. Plumbing Material Standards

 

Materials and Products	ANSI	ASTM	FS	IAPMO	Other Standards	Footnote Remarks
NONMETALLIC PIPE: Crosslinked Polyethylene-Aluminum-Crosslinked Polyethylene (PEX-AL-PEX) Pressure Pipe		F1281-01e1 *		C-3388	NSF 14 NSF 61
Polyethylene-Aluminum-Polyethylene (PE-AL-PE) Pressure Pipe		F1282-02e1 *		C-3389	NSF 14 NSF 61
Metal insert fittings for Polyethylene-Aluminum-Polyethylene (PE-AL-PE) and Crosslinked Polyethylene-Aluminum-Crosslinked Polyethylene (PEX-AL-PEX) Composite Pressure Pipe		F1974-01e1 *		C-3846	NSF 14 NSF 61
NONMETALLIC PIPE: Metal insert fittings utilizing a copper crimp ring for SDR9 Cross-Linked Polyethylene (PEX) tubing. Cold Expansion Fitting with PEX reinforcing ring for use with SDR-9 Cross-Linked Polyethylene (PEX Tubing)		F1807-97     F1960-99
PLUMBING FIXTURES: Waterless Urinals	Z124.9			C-3346
Note: * Published by the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.

Historical Note

New Table A made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

 

R4-48-115. Reserved

R4-48-116. Reserved

R4-48-117. Reserved

R4-48-118. Reserved

R4-48-119. Appendix A, Recommended Rules for Sizing the Water Supply System

This appendix has no modifications.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-120. Appendix B, Explanatory Notes on Combination Waste and Vent Systems

This appendix has no modifications.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-121. Appendix C, Minimum Plumbing Facilities

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

The third paragraph of Appendix C is added to read: "Those jurisdictions that have not adopted a building code which stipulates minimum plumbing facilities shall utilize Appendix C of the 1994 UPC when establishing plumbing facility requirements.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-122. Appendix D, Rainwater Systems

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Appendix D 1 (a) is modified to read:

Rainwater piping placed within the interior of a building or run within a vent or shaft shall be of cast iron, galvanized steel, wrought iron, brass, copper, lead, Schedule 40 ABS DWV, Schedule 40 PVC DWV, or other approved materials, and changes in direction shall conform to the requirements of Section 706.0.

2. Appendix D1.1(c) is modified to read: Roof drains, overflow drains, and rainwater piping installed within the building shall be tested in conformity with the provisions of this Code for testing drain, waste, and vent systems.

3. Appendix D3.3 is modified to read: Horizontal Rainwater Piping. Horizontal Rainwater Piping shall be sized in accordance with Table D-2. Exception: The potential head of water which may rise in the vertical drain pipe (tailpiece) may be used to reduce the horizontal pipe size and its slope if the head (rise) is sufficient when calculated as follows:

(a) If the head (`h') is equal to or greater than 3/8 inch for each foot (31.35 mm/m) of horizontal pipe length, the horizontal pipe may be pitched at 1/8 inch slope (10.45 mm/m), but sized according to the 1/2 inch slope (41.8 mm/m) table.

(b) If the head (`h') is equal to or greater than 1/8 inch for each foot (10.45 mm/m) of horizontal pipe length, the horizontal pipe may be pitched at 1/8 inch slope (10.45 mm/m), but sized according to the 1/4 inch slope (20.9 mm/m) table. (See Illustration A).

EXAMPLE #1: Roof Area - 4800 Square Feet (445.9 m 2)

Maximum Rainfall/Hour - Six Inches (152.4 mm/h)

Pipe Laid at 1/8 inch Slope (10.45 mm/m)

Using the 1/2 inch slope (41.8 mm/m) table, the horizontal pipe size will be six inches.

The available static head (`h') needed to allow use of the 1/2 inch (41.8 mm/m) table is calculated as follows:

3/8 inch of head pressure per foot (31.35 mm/m) of horizontal pipe run becomes 3/8-inch x 100 feet = 300/8ths, or `h' = 37 1/2 inches (952.5 mm). NOTE: Sizing from the 1/8 inch (10.45 mm per m) table would have required the horizontal pipe size to be eight inches (203.2 mm), rather than the six inches (152.4 mm) made possible by use of the 1/2 inch (41.8 mm/m) slope table.

EXAMPLE #2: Roof Area - 6000 Square Feet

Maximum Rainfall/Hour - six Inches (152.4 mm)

Pipe Laid at 1/8 inch Slope (10.45 mm/m)

Using the 1/4 inch slope (20.9 mm/m) table the horizontal pipe size will be eight inches (203.3 mm). The available static head (`h') needed to allow use of the 1/4 inch (20.9 mm/m) table is calculated as follows: 1/8 inch of head pressure per foot (10.45 mm per m) of horizontal pipe run becomes 1/8-inch x 100 feet = 100/8ths, or `h' = 121/2 inches (317.5 mm). NOTE: Sizing from 1/8 inch (10.45 mm per m) table would have required the horizontal pipe size to be 10 inches (254.0 mm) rather than the eight inches (203.2 mm) made possible by use of the1/4 inch slope (20.9 mm/m) table.

(c) If the head (`h') is equal to or greater than 10 feet (3.05 m) (for example, base of a stack), all horizontal pipe downstream of any such vertical section may be the same size as the vertical pipe to which it is connected.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3). Amended by final rulemaking at 9 A.A.R. 1189, effective May 18, 2003 (Supp. 03-1).

 

Illustration A. Horizontal Rainwater Piping

Historical Note

New Illustration A made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

 

R4-48-123. Appendix E, Manufactured or Mobile Home Parks and Recreational Vehicle Parks

This appendix has no modifications.

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-124. Appendix F, Medical Gas Systems

The Uniform Plumbing Code incorporated in R4-48-102(A) is modified as follows:

1. Appendix F Medical Gas Systems. Current language is deleted and replaced with the following sections of NFPA #99, Health Care Facilities (1996 Edition) as amended by this section, which are incorporated by reference. The incorporation by reference does not include any later amendments or editions. Copies of the incorporated material are available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02169, and are on file with the Office of the Secretary of State:

F1 Scope

(a) The provisions herein shall apply to the installation, testing, and certification of medical gas and vacuum piping for safe use in-patient care hospitals, clinics, and other health care facilities.

(b) The purpose of this appendix is to provide minimum requirements for the installation, testing, and certification of medical gas and medical vacuum systems, from the point of supply to the user outlets or inlets. These provisions do no cover portable systems or cylinder storage requirements.

F2 All medical gas and vacuum piping systems are to be installed and inspected based upon applicable language found in the following chapters of NFPA #99, Health Care Facilities (1996 edition):

Chapter 1. Introduction.

1-1 Scope

1-2 Application. (Use first paragraph; delete second paragraph)

1-3 Intended Use

1-4 Discretionary Powers of Authority Having Jurisdiction

1-5 Interpretations

1-6 Organization of This Document (subsections 1-6.1, 1-6.2, and 1-6.3)

1-7 Metric Units

1-8 Effective Date

1-9 Preface

Add Sec. 1-10 to read: Sections of NFPA 99, 1996 edition, which are not referenced are not mandated by the Arizona Uniform Plumbing Code.

Chapter 2. Definitions.

2-1 Official NFPA Definitions

2-2 Definitions of Terms Used in the Standard

Chapter 4. Gas and Vacuum Systems.

4-3.1.1.2 Storage Requirements (Location, Construction, Arrangement)

4-3.5 Administration - Level 1

4-3.5.1 Responsibility of Governing Body

4-3.5.2 Gas System Policies - Level 1

4-3.5.2.1 Gases in Cylinders and Liquefied Gases in Containers - Level 1

4-3.5.2.2 Storage of Cylinders and Containers - Level 1

4-3.5.2.3 Patient Gas Systems - Level 1

4-3.5.3 Gas Systems Recordkeeping - Level 1

4-3.5.4 Gas Systems Information and Warning Signs - Level 1

4-3.5.4.1 (No Heading)

4-3.5.4.2 (No Heading)

4-3.5.4.3 (No Heading)

4-3.5.5 Gas System Transport and Delivery - Level 1

4-3.5.5.1 (No Heading)

4-3.5.5.2 (No Heading)

4-3.5.6 Vacuum Systems Policies - Level 1

4-3.5.6.1 Patient Vacuum Systems

4-3.5.7 Vacuum System Recordkeeping - Level 1

4-3.5.8 Vacuum System Information and Warning Signs - Level 1

4-3.5.8.1 Piping Distribution System

4-3.5.8.2 Gauge Identification

4-3.5.9 WAGD System Policies - Level 1

4-3.5.9.1 Maintenance

4-3.5.9.2 Performance Tests

4-4 Level 2 Piped Systems

4-4.1 Piped Gas Systems - Level 2

4-4.2 Piped Vacuum Systems - Level 2

4-4.3 Piped WAGD Systems - Level 2

4-4.4 Performance Criteria and Testing - Level 2

4-4.5 Administration - Level 2

4-5.5 Administration - Level 3

4-5.5.1 Responsibility of Governing Body

4-5.5.2 Gas System Policies - Level 3

4-5.5.2.1 (No Heading)

4-5.5.2.2 (No Heading)

4-5.5.2.3 Patient Gas Systems - Level 3

4-5.5.3 Gas System Recordkeeping - Level 3

4-5.5.4 Gas System Information and Warning Signs - Level 3

4-5.5.5 Gas System Transport and Delivery - Level 3

4-5.5.6 Vacuum System Policies - Level 3

4-5.5.7 Vacuum System Recordkeeping - Level 3

4-5.5.8 Vacuum System Information and Warning Signs - Level 3

4-5.5.9 WAGD System Policies - Level 3

4-6.5 Administration - Level 4

Chapter 12. Hospital Requirements.

12-1 Scope

12-3.4 Gas and Vacuum System Requirements

12-3.4.1 (No Heading)

12-3.4.2 (No Heading)

12-3.4.3 (No Heading)

12-3.4.4 (No Heading)

12-3.4.5 (No Heading)

Chapter 13. Ambulatory Health Care Center Requirements.

13-1 Scope

13-3.4 Gas and Vacuum System Requirements

13-3.4.1 (No Heading)

13-3.4.2 (No Heading)

13-3.4.3 (No Heading)

13-3.4.4 (No Heading)

13-3.4.5 (No Heading)

Chapter 14. Clinic Requirements.

14-1 Scope

14-3.4 Gas and Vacuum System Requirements

14-3.4.1 (No Heading)

14-3.4.2 (No Heading)

14-3.4.3 (No Heading)

14-3.4.4 (No Heading)

14-3.4.5 (No Heading)

Chapter 15. Medical and Dental Office Requirements.

15-1 General

15-1.1 Scope

15-1.2 Applicability

15-3.4 Gas and Vacuum System Requirements

15-3.4.1 (No Heading)

15-3.4.2 (No Heading)

15-3.4.3 (No Heading)

15-3.4.4 (No Heading)

15-3.4.5 (No Heading)

15-3.4.6 (No Heading)

15-3.4.7 (No Heading)

15-3.4.8 (No Heading)

15-3.4.9 (No Heading)

Chapter 16. Nursing Home Requirements.

16-1 Scope

16-3.4 Gas and Vacuum System Requirements

16-3.4.1 (No Heading)

16-3.4.2 (No Heading)

Chapter 17. Limited Care Facility Requirements.

17-1 Scope

17-3.4 Gas and Vacuum System Requirements

17-3.4.1 (No Heading)

17-3.4.2 (No Heading)

Chapter 19. Hyperbaric Facilities.

19-1 Introduction and Scope

19-3.3.3 (No Heading)

19-3.3.5 (No Heading)

Historical Note

New Section made by final rulemaking at 7 A.A.R. 4329, effective September 9, 2001 (Supp. 01-3).

R4-48-125. Appendix G, Graywater Systems for Single Family Dwellings

A. Appendix G of the International Association of Plumbing and Mechanical Officials' (I.A.P.M.O.) Uniform Plumbing Code (1994 Edition) is incorporated by reference. This incorporation by reference does not include any later amendments or editions. Copies of the incorporated material are available from I.A.P.M.O. at 20001 Walnut Drive South, Walnut, CA, 91789-2825 and are on file with the Arizona Uniform Plumbing Code Commission and the Office of the Secretary of State. Notwithstanding any other provision of R4-48-125, the provisions of R4-48-125 do not require an Administrative Authority to act in a manner that conflicts with other provisions of state law or duplicates any act required by other provisions of state law.

B. Appendix G, incorporated by subsection (A) is modified as follows:

1. Appendix G1(b) is modified to read: "The type of system shall be determined on the basis of location, soil type, absorption rate, soil classification, and depth to ground water below the land surface, and shall be designed to accept only graywater connected to the system from the residential building. The system, except as otherwise approved, may consist of a holding tank or tanks and shall discharge graywater into subsurface irrigation/disposal fields."

2. Appendix G1(d) is modified to read: "No permit for any graywater system shall be issued until a plot plan with appropriate data, as required by Section G4, has been submitted and approved. When there is insufficient lot area or inappropriate soil conditions for adequate absorption of the graywater, as determined by the Administrative Authority, no graywater system shall be permitted. No permit shall be issued for the irrigation/disposal field of a graywater system that does not meet the criteria specified in this Appendix until appropriate data satisfactory to the Administrative Authority have been submitted and approved."

3. Appendix G1(g) is added to read: "When making the initial site investigation and determining the soil characterization and soil absorption rates for graywater systems, the standards in subsections (a) through (c) are incorporated by reference and the standards in subsections (a) through (d), or equivalent methods or standards approved by the Administrative Authority shall be used. The incorporations do not include later amendments or editions and are available from Registrar of Contractors and are on file with the Office of the Secretary of State:

a. ASTM D-5879-95, "Standard Practice for Surface Site Characterization for On-Site Septic Systems;"

b. ASTM D-5921-96, "Standard Practice for Subsurface Site Characterization of Test Pits for On-Site Septic Systems;"

c. ASTM D-1452-80 (Reapproved 1995), "Standard Practice for Soil Investigation and Sampling by Auger Borings," may be used in areas where the depth to groundwater may be within the required vertical separation from the bottom of the subsurface disposal field for graywater systems, based on the factors in the standard," or

d. Percolation testing, as specified in Appendix I of this Code.

4. Appendix G2 is modified to read: "Graywater is untreated household water which has not come into contact with toilet waste. Graywater includes used water from bathtubs, showers, bathroom wash basins, and water from clothes-washing machines and laundry tubs. It shall not include wastewater from kitchen sinks, dishwashers, or deleterious chemicals such as discharge from photo lab sinks."

5. Appendix G4(a) is modified to read: "A site-specific plot plan drawn to scale completely dimensioned, showing lot lines and structures, direction and approximate slope of surface (2 foot (0.6 m) contour lines), location of all present or proposed retaining walls, drainage channels, water supply lines, wells, paved areas and structures on the lot, number of bedrooms and plumbing fixtures in each structure, location of private sewage disposal system and 100% expansion area, or building sewer connection to the public sewer, and location of the proposed graywater system."

6. Appendix G4(b) is modified to read: "Details of construction, including system profile and construction sections necessary to assure compliance with the requirements of this Appendix, together with a full description of the complete installation, including installation methods, construction, and materials as required by the Administrative Authority."

7. Appendix G4(c) is modified to read: "A log of soil formations, percentage of rock, texture, structure, consistence, and mottles as provided in ASTM D-5921-96, depth to groundwater below the land surface as determined by test holes dug in close proximity to any proposed irrigated area (using, for example, published groundwater data, subdivision reports, or relevant well data), soil classification, or percolation test results to determine equivalent function of subsurface irrigation/disposal field. Other information acceptable to the Administrative Authority may be used to obtain soil performance equivalent to that achieved by the standards or methods specified in Section G1(g)."

8. Appendix G5(a)(1) is modified to read: "All applicable provisions of this Appendix and the inspection requirements shall be complied with. The Administrative Authority shall confirm the soil suitability for a graywater system, inspect the disposal area following excavation, and inspect the piping system installation."

9. Appendix G5(a)(3) is modified to read: "Holding/surge tanks shall be installed on dry, level, well-compacted soil if underground, or on a level 3 inch (76.2 mm) concrete slab, if above ground."

10. Appendix G5(a)(4) is modified to read: "Above ground holding/surge tanks of cylindrical design shall be anchored against overturning."

11. Appendix G5(b)(1) is modified to read: "Holding/surge tanks shall be filled with water to the overflow line prior to and during inspection. All seams and joints shall be left exposed and the tank shall remain watertight."

12. Appendix G5(b)(2) is modified to read: "A flow test shall be performed through the system to the point of graywater irrigation/disposal. All conveyance lines and components shall be watertight."

13. Appendix G7 is modified to read: "Each irrigation zone shall have the minimum effective irrigation area in square feet as determined by Table G-2 for the type of soil found in the excavation, based upon a calculation of estimated graywater discharge pursuant to Section G-6 of this Appendix. The effective area of the irrigation/disposal zone shall be equal to the aggregate length of the perforated pipe sections within the irrigation zone times the width of the proposed irrigation/disposal zone. Each proposed graywater system shall include at least one irrigation zone. Each zone shall be in compliance with the provisions of this section. No excavation for an irrigation/disposal field shall extend to a depth where graywater may contaminate the groundwater or surface water. The minimum vertical separation distance from the bottom of the irrigation zone shall be at least 1 foot (0.30 m) of normally unsaturated soil."

14. Appendix G8(a) is modified to read: "Irrigation/disposal field size shall be computed from Table G-2. Rock fragments as defined by ASTM D-5921-96 shall be excluded from the field sizing."

15. Appendix G8(c) is modified to read: "When a percolation test is used, no graywater system shall be permitted if the test shows the absorption capacity of the soil is outside the range of two minutes per inch (0.79 minutes per cm) to 60 minutes per inch (23.6 minutes per cm). Soils with excessively high or low permeability are unsuitable."

16. Appendix G9 is modified to read: "Holding/Surge Tank Construction"

17. Appendix G9(a) is modified to read: "Plans for holding/surge tanks, if utilized, shall be submitted to the Administrative Authority for approval. Such plans shall show all dimensions and such other pertinent data as may be required. A minimum capacity of 50 gallons (189.2 L) is required, when a holding/surge tank is utilized."

18. Appendix G9(b) is modified to read: "Holding/surge tanks shall be constructed of solid durable materials, not subject to excessive corrosion or decay, and shall be watertight."

19. Appendix G9(c) is modified to read: "Each holding/surge tank shall be vented as required by Chapter 9 of this Code and shall have a locking, gasketed access opening, or approved equivalent, to allow for inspections and cleaning."

20. Appendix G9(d) is modified to read: "Each holding/surge tank shall have its rated capacity permanently marked on the unit. In addition, a sign "GRAYWATER IRRIGATION SYSTEM, DANGER - UNSAFE WATER" shall be permanently marked on the holding/surge tank."

21. Appendix G9(e) is modified to read: "Each holding/surge tank installed above ground shall have an emergency drain, separate from that connecting the tank with the irrigation/disposal fields, and an overflow drain. The emergency and overflow drains shall have permanent connections to the building drain or building sewer, upstream of the septic tanks, if any. The overflow drain shall not be equipped with a shutoff valve."

22. Appendix G9(f) is modified to read: "The overflow and emergency drain pipes shall not be less in size than that of the inlet pipe. The vent size shall be determined based on the total graywater fixture units, as outlined in Table 7-5 of this Code. Unions or equally effective fittings shall be provided for all piping connected to the holding/surge tank."

23. Appendix G9(g) is modified to read: "Each holding/surge tank shall be structurally designed to withstand all anticipated earth or other loads. All holding/surge tank covers shall be capable of supporting an earth load of not less than 300 pounds per square foot (14.4 kPa) when the tank is designed for underground installation."

24. Appendix G9(h) is modified to read: "If a holding/surge tank is installed underground, the system must be designed so that the tank overflow will gravity drain to the existing sewer line or septic tank. The tank shall be protected against sewer line backflow by a backwater valve."

25. Appendix G9(i)(1) is modified to read: "Steel holding/surge tanks shall be protected from corrosion, both externally and internally, by a coating acceptable to the Administrative Authority."

26. Appendix G9(i)(2) is modified to read: "Holding/surge tanks constructed of concrete, fiberglass or alternative material may be approved by the Administrative Authority."

27. Appendix G10 is modified to read: "Graywater piping discharging into the holding/surge tank or having a direct connection to the sanitary drain or sewer piping shall be downstream of an approved waterseal type trap or traps. If no such trap or traps exist, an approved vented running trap shall be installed upstream of the connection to protect the building from any possible waste or sewer gases. All graywater piping shall be marked or shall have a continuous tape marked with the words "DANGER - UNSAFE WATER." All valves, including the 3-way valve, shall be readily accessible and shall be approved by the Administrative Authority. A backwater valve, installed pursuant to this Code, shall be provided on all holding/surge tank drain connections to the sanitary drain or sewer piping."

28. Appendix G11(b) is modified to read: "Aggregate or clean stone, varying in size from 3/4 inch (19.1 mm) to 2-1/2 inches (63.5 mm) shall be placed in the trench to the depth and grade required by this section. The perforated section shall be laid on the aggregate in an approved manner. The perforated section shall then be covered with aggregate to the minimum depth required by this section. The aggregate shall then be covered with geotextile or landscape filter fabric materials, or similar porous material to prevent closure of voids with earth backfill. No earth backfill shall be placed over the aggregate cover until after inspection and acceptance."

29. Appendix G11(c) is modified. Refer to Table A.

30. Appendix G12(a) is modified to read: "Other collection and distribution systems may be approved by the Administrative Authority as allowed by Section 301.0 [Standards and Alternatives] of this Code."

31. Appendix G12(b) is modified to read: "Nothing contained in this appendix shall be construed to prevent the Administrative Authority from requiring an alternative design if the Administrative Authority determines that the first submitted design will not maintain a safe and sanitary condition."

32. Table G-1 is modified. Refer to Table B - Location of Graywater System and Setback Requirements.

33. Table G-2 is modified. Refer to Table C - Effluent Application Loading Rates to Soil for Graywater Systems.

34. Figure G-1 is modified. Refer to Illustration A - Graywater System Tank - Gravity.

35. Figure G-2 is modified. Refer to Illustration B - Graywater System Tank - Pumped.

36. Figure G-3 is modified. Refer to Illustration C - Graywater System Multiple Tank Installation.

37. Figure G-4 is modified. Refer to Illustration D - Graywater System Underground Tank - Pumped.

38. Figure G-5 is modified. Refer to Illustration E - Graywater System Typical Irrigation Zone Layout.

Historical Note

New Section adopted by final rulemaking at 6 A.A.R. 167, effective December 16, 1999 (Supp. 99-4). Amended by final rulemaking at 7 A.A.R. 1458, effective March 16, 2001 (Supp. 01-1).

 

Table A. Irrigation Disposal Fields

Irrigation/disposal fields shall be constructed as follows:

 

	Minimum	Maximum
Number of perforated drain lines per irrigation zone	1	--
Length of each perforated drain line	--	100 ft. (30.5 m)
Bottom width of trench	6 in. (15.2 cm)	24 in. (61.0 cm)
Spacing of lines, center-to-center	4 ft. (1/2 m)	--
Depth of earth cover over aggregate	9 in. (22.9 cm)
Depth of aggregate cover over the lines	2 in. (5.1 cm)	--
Depth of aggregate beneath lines	3 in. (7.6 cm)	--
Grade of perforated lines	Level	3 in./100 ft. (7.6 cm/30.5 m)
Total depth of trench	17 in. (43.1 cm)	24 in. (61 cm)

Historical Note

Table A adopted by final rulemaking at 6 A.A.R. 167, effective December 16, 1999 (Supp. 99-4).

 

Table B. Location of Graywater System and Setback Requirements

 

Minimum Horizontal Distance in Clear Required From:	Holding/Surge Tank (feet)(meters)	Irrigation/Disposal Field (feet)(meters)
Building structures (see footnote 1)	5 ft. (1.5 m) (see footnote 2)	2 ft. (0.6 m) (see footnote 3)
Property line adjoining private property	5 ft. (1.5 m)	(see footnote 4)
Water supply wells (see footnote 5)	100 ft. (30.5 m)	100 ft. (30.5 m)
Streams, lakes, and reservoirs (see footnote 5)	100 ft. (30.5 m)	100 ft. (30.5 m) (see footnote 6)
Domestic water source (see footnote 7)	200 ft. (61.0 m)	200 ft. (61.0 m)
Dry wash/drainage easements (see footnote 10)	50 ft. (15.2 m)	50 ft. (15.2 m)
Sewage pits	5 ft. (1.5 m)	5 ft. (1.5 m)
Disposal field and 100% expansion area	5 ft. (1.5 m)	4 ft. (see footnote 8)
Septic tank	0 ft.	5 ft. (1.5 m)
On-site domestic water service line	5 ft. (1.5 m)	5 ft. (1.5 m)
Pressurized public water main	10 ft. (3.0 m)	10 ft. (3.0 m) (see footnote 9)

 

Notes: When irrigation/disposal fields are installed in sloping ground, the minimum horizontal distance between any part of the distribution system and the ground surface shall be 15 feet (4.6 m).

1 Including porches and steps, whether covered or uncovered, breezeways, roofed patios, carports, covered walks, covered driveways and similar structures or appurtenances.

2 The distance may be reduced to 0 feet for above-ground tanks when first approved by the Administrative Authority.

3 Assumes a 45° angle from foundation.

4 The setback requirement is 5 feet (1.5 m) unless the property is not served by a central system for the distribution of water and:

There is no existing or proposed individual well on adjoining private property, in which case the setback is 50 feet (15.2m); or

a. A 100-foot (30.5m) separation distance cannot be maintained from an existing or proposed individual well, in which case the setback is the distance necessary to maintain the 100-foot (30.5m) separation; or

b. The applicable setback requirement in (a) or (b) may be reduced to a minimum of 5 feet (1.5m) with a variance from the Administrative Authority.

5 Where special hazards are involved, the distance required shall be increased as may be directed by the Administrative Authority.

6 These minimum clear horizontal distances shall also apply between the irrigation/disposal field and the maximum lake or reservoir level.

7 A point of water intake or suction pipeline from any stream, lake, or reservoir that is used for the purpose of providing water for human consumption.

8 Plus 2 feet (0.6 m) for each additional foot (meter) of depth in excess of 1 foot (0.3 m) below the bottom of the drain line.

9 For parallel construction/for crossings, approval by the Administrative Authority shall be required.

10 50-foot (15.2 m) setback is measured from the edge of the defined natural channel bank for a drainage area of at least five acres (2 hectare) or a drainage easement, whichever is less. Setback may be reduced to 25 feet (7.6 m) up gradient from the system, if channel erosion protection is provided (naturally or man-made) and approved by the Administrative Authority.

Historical Note

Table B adopted by final rulemaking at 6 A.A.R. 167, effective December 16, 1999 (Supp. 99-4).

 

Table C. Effluent Application Loading Rates to Soil for Graywater Systems

Instructions: Read questions in sequence beginning with A. The maximum soil loading rate in gallons per day per square foot (gpd/sq. ft.) (Lpd/sq. m.) corresponds to the first "yes" response to the questions.

 

	Soil Application Rates gpd/sq. ft. (Lpd/sq. m.)	Percolation Rate Range minutes/inch (min./cm.)
A. Is the horizon gravelly coarse sand or coarser?	0 (0) (footnote 1)	--
B. Is the structure of the horizon moderate or strongly platy?	0 (0) (footnote 1)	--
C. Is the texture of the horizon sandy clay loam, clay loam, silty clay loam, or finer and structure weak and platy?	0 (0) (footnote 1)	--
D. Is the moist consistence stronger than firm or any cemented class?	0 (0) (footnote 1)	--
E. Is texture sandy clay, clay, or silty clay of high clay content and structure massive or weak?	0 (0) (footnote 1)	--
F. Is texture sandy clay loam, clay loam, silty clay loam, or silty loam and structure massive?	0 (0) (footnote 1)	--
G. Is the texture of the horizon loam or sandy loam and the soil structure massive?	.20 (8.15)	16-45 (6.3-17.7)
H. Is texture sandy clay, clay or silty clay of low clay content and the structure moderate or strong?	.20 (8.15)	45-60 (17.7-23.6)
I. Is texture sandy clay loam, clay loam, or silty loam and structure weak?	.20 (8.15)	45-60 (17.7-23.6)
J. Is texture sandy clay loam, clay loam, or silty clay loam and structure moderate or strong?	.40 (16.30)	45-60 (17.7-23.6)
K. Is texture sandy loam, loam, silty loam and structure weak?	.40 (16.30)	16-45 (6.3-17.7)
L. Is texture sandy loam, loam, silty loam and structure moderate or strong?	.60 (24.45)	16-45 (6.3-17.7)
M. Is texture fine sand, very fine sand, loamy fine sand, or loamy very fine sand?	.40 (16.30)