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Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8301 - General requirements for primary treatment unit; use of alternative treatment system

Current through June 11, 2024
1. All liquid waste
				and wastewater must be discharged into a septic tank or other approved primary
				treatment unit. Graywater may be discharged separately in accordance with NAC
				444.837 and 444.8372. Water from a roof or footing, water from garage and
				surface drainage, and processed water must be prevented from entering an
				individual sewage disposal system.
2. A primary treatment unit must be of
				sufficient size to provide adequate treatment during a period of maximum
				inflow.
3. A primary treatment unit
				must be accessible. If the top of the primary treatment unit is more than 18
				inches below the surface of the ground, a manhole extension that is at least 24
				inches in diameter and extends from the top of the unit to within 18 inches of
				the surface of the ground must be used for each access into the unit.
4. To prevent differential settling, a
				primary treatment unit must be placed on undisturbed soil, or on at least 4
				inches of sand overlying a firm and uniform base.
5. An alternative treatment system, other
				than those described in NAC 444.8314 to 444.8324, inclusive, may be used if
				approved by the health authority. An alternative treatment system must have a
				minimum capacity that is equal to the required minimum capacity of the
				appropriate septic tank as calculated pursuant to NAC 444.8304 and
				444.8306.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99; Added to NAC by Bd. of Health by R129-98, eff.
				  3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8302 - Plans for commercial systems to be submitted for review

Current through June 11, 2024
The plans for a commercial system must be submitted for
				  review to the Division of Environmental Protection of the State Department of
				  Conservation and Natural Resources.
Added to
				  NAC by Bd. of Health by R129-98, eff. 3-25-99; A by R100-07,
				  10-31-2007
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8304 - General requirements for septic tank used as primary treatment unit or with alternative treatment system

Current through June 11, 2024
A septic tank that is used as a primary treatment unit or in
				  conjunction with an alternative treatment system must meet the requirements of
				  NAC 444.804 to 444.810, inclusive.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8306 - Capacity of septic tank serving single-family dwelling

Current through June 11, 2024
1. The minimum capacity for a septic tank
				that serves a single-family dwelling is based on the number of bedrooms in the
				dwelling, and is determined as follows:
Number of Bedrooms
Minimum Liquid Capacity of Tank (in Gallons)
3 or less
1,000
4
1,200
5 or 6
1,500
If the single-family dwelling has more than six bedrooms, 150
				  gallons for each additional bedroom must be added to 1,500 gallons.
2. An absorption system designed
				for a septic tank may be based on the minimum required size for the septic
				tank.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8314 - Aerobic wastewater treatment unit: Maintenance; repair or replacement; required use

Current through June 11, 2024
1. An aerobic
				wastewater treatment unit requires routine maintenance. The owner of an
				individual sewage disposal system that will include an aerobic wastewater
				treatment unit shall include in the design plans submitted to the
				administrative authority a maintenance agreement with an approved service
				provider that covers the anticipated life span of the individual sewage
				disposal system.
2. The maintenance
				agreement for the individual sewage disposal system must include, without
				limitation, a yearly inspection of the system, and the components thereof,
				which verifies that the system is:
(a)
				Functioning correctly; and
(b)
				Producing effluent which has levels of total suspended solids and biological
				oxygen demand that are each 30 milligrams or less per liter.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8316 - Aerobic wastewater treatment unit: Approval required; design criteria; limitations on use; manual of operation and maintenance

Current through June 11, 2024
1. An aerobic wastewater treatment unit must
				be approved by:
(a) NSF International pursuant
				to its Standard 40;
(b) Any other
				equivalent nationally recognized testing laboratory approved by the health
				authority; or
(c) The health
				authority.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8318 - Aerobic wastewater treatment unit: Inspection

Current through June 11, 2024
1. The
				construction of an aerobic wastewater treatment unit must be inspected and
				verified by an engineer. The inspections must be conducted when:
(a) The absorption trenches have been
				excavated or, if an elevated mound system is to be used, when the basal area of
				the mound has been scarified;
(b)
				The distribution piping has been placed in the aggregate;
(c) The system has been covered with soil;
				and
(d) All the pumps, switches,
				alarms, aeration units and other components associated with the individual
				sewage disposal system have been installed. The engineer or homeowner, as
				appropriate, shall verify that the operational liquid levels are set as
				specified by the design plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8321 - Nitrogen removal wastewater treatment unit: Maintenance; repair or replacement; required use; regulatory oversight program

Current through June 11, 2024
1. A
				nitrogen removal wastewater treatment unit requires routine maintenance. The
				owner of an individual sewage disposal system that will include a nitrogen
				removal wastewater treatment unit shall include in the design plans submitted
				to the administrative authority a maintenance agreement with an approved
				service provider that covers the anticipated life span of the individual sewage
				disposal system.
2. The maintenance
				agreement for the individual sewage disposal system must include, without
				limitation, a yearly inspection of the system, and the components thereof,
				which verifies that the system is:
(a)
				Functioning correctly; and
(b)
				Producing effluent with nitrogen level reductions that are consistent with the
				performance specifications provided by the manufacturer.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8322 - Nitrogen removal wastewater treatment unit: Approval required; design criteria; limitations on use; manual of operation and maintenance

Current through June 11, 2024
1. A nitrogen removal wastewater treatment
				unit must be approved by:
(a) NSF
				International pursuant to its Standard 40;
(b) Any other equivalent nationally
				recognized testing laboratory approved by the health authority; or
(c) The health authority.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8324 - Nitrogen removal wastewater treatment unit: Inspection

Current through June 11, 2024
1. The construction of a nitrogen removal
				wastewater treatment unit must be inspected and verified by an engineer. The
				inspections must be conducted when:
(a) The
				absorption trenches have been excavated or, if an elevated mound system is to
				be used, when the basal area of the mound has been scarified;
(b) The distribution piping has been placed
				in the aggregate;
(c) The system
				has been covered with soil; and
(d)
				All the pumps, switches, alarms, aeration units and other components associated
				with the individual sewage disposal system have been installed. The engineer or
				homeowner, as appropriate, shall verify that the operational liquid levels are
				set as specified by the design plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8326 - Dosing tank: General requirements

Current through June 11, 2024
1. A dosing tank
				must be used if:
(a) It is necessary to raise
				the elevation of the wastewater for further treatment or disposal of
				sewage;
(b) Intermittent dosing of
				the disposal field is desired;
(c)
				A pressure distribution system is used; or
(d) More than 500 lineal feet of absorption
				trench are required for the individual sewage disposal system.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.8328 - Dosing tank: Design criteria

Current through June 11, 2024
1. A dosing tank
				must have sufficient volume to provide for the volume desired for dosing and a
				reserve volume. The reserve volume, which is equal to the volume of the tank
				between the alarm switch for high levels of effluent and the bottom of the
				invert of the inlet pipe, must be of sufficient size to allow the owner of the
				system to respond to a high-level alarm before the level of effluent in the
				dosing tank reaches the invert of the inlet pipe.
2. If an electric pump is used in a dosing
				tank:
(a) The size of the pump must be
				determined according to the performance curves provided by the manufacturer,
				the flow rate needed and the size of the pumping head as calculated by an
				engineer. The engineer shall calculate the size of the pumping head by adding
				the difference in elevation between the highest elevation of the discharge pipe
				and the level for low effluent in the dosing chamber to the friction losses
				incurred in the discharge pipe. The engineer may make the calculations pursuant
				to this paragraph without considering velocity head.
(b) The control system for the dosing tank
				must include a switch to turn on the pump, a switch to turn off the pump and an
				alarm switch for high levels of effluent. The alarm switch must emit a visual
				and audible alarm and must be placed not less than 2 inches or more than 3
				inches above the switch that turns off the pump to alert the owner that there
				is a high level of effluent or malfunction of the pump that will likely cause a
				high level of effluent. The alarm switch must be on a circuit that is separate
				from the circuit for the switches which turn the pump on and off. A switch used
				in a pumping chamber must be able to withstand the humid and corrosive
				atmosphere inside the tank. The owner shall include in the design plans an
				information sheet provided by the manufacturer for each pump, switch and alarm
				to be used in the dosing tank.
(c)
				All electrical contacts and relays must be mounted on the outside of the dosing
				tank to protect the contacts and relays from corrosion. The owner of the
				individual sewage disposal system shall take such actions as are necessary to
				prevent sewer gases from traveling through the electrical conduit into the
				control box.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Discharge and Treatment of Liquid Waste and Wastewater › Section 444.833 - Distribution box: General requirement; design criteria

Current through June 11, 2024
1. Except where a pressure distribution
				system is used, a distribution box must be used in an absorption system if more
				than one distribution line is used.
2. A distribution box must be watertight and
				constructed of a durable material that is resistant to corrosion, including,
				without limitation, concrete, polyethylene, fiberglass or any other material
				approved by the health authority. The distribution box must have a cover that
				is made of the same material as the distribution box.
3. Each distribution line must be separately
				connected to the distribution box. The inverts of the outlet lines must be set
				at the same level above the bottom of the box. The inverts of the inlet must be
				at least 1 inch higher than the inverts of the outlet. A distribution box must
				be designed to ensure equal flow and must be installed on:
(a) Aggregate;
(b) A level concrete slab which is at least 6
				inches in depth and which extends 6 inches or more beyond the perimeter of the
				distribution box; or
(c)
				Undisturbed soil.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.835 - Soil absorption system: General requirements

Current through June 11, 2024
1. The effluent from a septic tank or other
				primary treatment unit must be disposed of through a soil absorption trench or
				through an absorption system approved by the administrative
				authority.
2. The size and type of
				the absorption area required for the disposal of the effluent must be
				determined according to the results of the percolation testing and the
				requirements for the sizing of the appropriate septic tank, except that if the
				percolation testing yields a percolation rate of less than 10 minutes per inch,
				the percolation rate shall be deemed to be 10 minutes per inch.
3. Soils to be used in a soil absorption
				trench must have a percolation rate that is 120 minutes per inch or less
				without interference from groundwater or impervious strata below the level of
				the absorption system. A test pit must be excavated and the profile of the soil
				to a minimum depth of 5 feet below the bottom of the proposed absorption system
				must be recorded in a log for the profile of the soil. Impervious barriers,
				bedrock, fractures, areas of open solution, clay, caliche or other limiting
				factors which may affect the effluent disposal area must be indicated in the
				log.
4. A soil absorption system
				intended for use on soils with percolation rates greater than 60 minutes per
				inch, or intended for commercial use, must be designed by an
				engineer.
5. The depth to the
				seasonal high groundwater, as observed as the surface of free water or as
				indicated by mottling or historical documentation, must be indicated in the log
				for the profile of the soil.
6.
				Unless otherwise approved by the administrative authority, the owner of the
				absorption system shall maintain at least 4 feet between the bottom of the
				disposal trench or absorption area and the level of seasonal high groundwater,
				impervious barriers or other limiting soil characteristics.
7. If the absorption trench will be placed in
				any soil which has a percolation rate of less than 2 minutes per inch, the
				administrative authority may, depending on the characteristics of the soil and
				site, require that:
(a) The trench be
				specially designed by an engineer; and
(b) The required setbacks from any well or
				watercourses be increased.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8356 - Absorption trench system: Inspections

Current through June 11, 2024
1. If a residential
				system that is designed by a homeowner includes absorption trenches:
(a) The homeowner shall contact the
				administrative authority for an inspection before covering the system;
				and
(b) The administrative
				authority shall inspect the construction of the system by conducting an on-site
				inspection or, at the discretion of the administrative authority, reviewing
				photographic documentation provided by the homeowner, before the covering is
				placed on the system, to ensure that the system complies with the approved
				plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8358 - Absorption bed: General requirements

Current through June 11, 2024
1. If the use of an
				absorption trench is not practical, an absorption bed may be used as a viable
				alternative to the standard disposal trench. The bottom of the absorption bed,
				rather than the area of the sidewall, must serve as the primary absorptive
				medium.
2. A homeowner may design a
				residential system that uses an absorption bed for use at his or her
				residence.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8361 - Absorption bed: Design criteria

Current through June 11, 2024
1. The absorptive
				area of an absorption bed must be at least 50 percent larger than the
				calculated size that would be required for a standard absorption
				trench.
2. The percolation rate of
				the soils at the bottom of the absorption bed must not be less than 60 minutes
				per inch.
3. The effective
				perimeter of the area of the sidewall beneath the distribution lines, or the
				depth of the aggregate, must not be less than 12 inches or more than 36 inches.
				The area of the sidewall may be added to the bottom of the bed when calculating
				the size of the total absorptive area of the individual sewage disposal
				system.
4. An absorption bed must
				not be placed on a slope if the grade of the slope is greater than 8 percent.
				The bottom of the absorption bed must be level.
5. The invert of the piping for the drain
				field must be not less than 12 inches or more than 48 inches below the finished
				grade. The top of the absorption bed must be at least 6 inches below the
				surface line of the natural soil, and a capping fill must be placed on top of
				the absorption bed. The capping fill must extend at least 10 feet beyond the
				perimeter of the leaching area of the absorption bed and must be placed at a
				minimum depth of 12 inches above the finished grade to allow for
				settling.
6. An absorption bed must
				have at least two distribution lines which are separated by not less than 4
				feet or more than 6 feet. The distribution lines must be level and placed not
				less than 3 feet or more than 6 feet from the sidewall of the bed. If a gravity
				discharge system is used, the distribution line must not be less than 4 inches
				in diameter. If a pressurized distribution line is used, the line must meet the
				design guidelines for a pressure distribution system as set forth in NAC
				444.8394 and 444.8396.
7. A
				distribution line must not be longer than 110 feet and must be placed on at
				least 12 inches of clean, graded aggregate ranging in size from 3/4 to 2 1/2
				inches. At least 2 inches of aggregate must cover the top of the distribution
				line. Untreated building paper, straw, geotextile fabric, or any similar
				covering approved by the administrative authority, must cover the aggregate,
				and a backfill of soil must be placed over the covering.
8. The owner of an individual sewage disposal
				system shall take such precautions as are necessary to avoid compacting the
				bottom of the absorption bed. Any loose or smeared soil must be raked and
				removed. No vehicles may travel on the area of the absorption bed after
				excavation is completed.
9. Dosing
				is required if more than 500 linear feet of distribution lines are
				required.
10. The following is a
				diagram of an absorption bed:
Click here
				  to view image.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8362 - Absorption bed: Inspections

Current through June 11, 2024
1. The construction
				of an individual sewage disposal system that includes an absorption bed must be
				inspected and verified by an engineer or, if the system is designed by a
				homeowner as part of a residential system for his or her home, the homeowner.
				The inspections must be conducted as follows:
(a) Following excavation, the bottom of the
				absorption bed must be examined to ensure that there is no loose soil and that
				no smearing conditions exist; and
(b) Upon completion of the installation of
				the distribution lines in the absorption bed, the individual sewage disposal
				system must be inspected to ensure that the system complies with the approved
				design plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8364 - Chamber system: General requirements

Current through June 11, 2024
1. A chamber
				system may be used in lieu of a standard absorption trench if the installation
				of an absorption trench is not practical. The bottom area of the chamber
				system, rather than the area of the sidewall, serves as the primary absorption
				medium.
2. The manufacturer of a
				chamber system must apply to the health authority for approval of the chamber
				system. A chamber system must not be used as a component of an individual
				sewage disposal system unless the health authority has reviewed and approved
				the use of the chamber system.
3. A
				homeowner may design a residential system for use at his or her residence that
				includes a chamber system.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8366 - Chamber system: Design criteria

Current through June 11, 2024
1. The health
				authority shall provide a sizing chart for each chamber system which it
				approves. The sizing chart must list the number of chamber units required for a
				specific size of septic tank and percolation rate.
2. The percolation rate of the soil on which
				a chamber system is placed must not be slower than 60 minutes per
				inch.
3. The invert of the drain
				piping entering the first chamber of the system must not be more than 48 inches
				below the finished grade. The trench depth for a chamber system must not be
				more than 5 feet below the finished grade. The top of the chamber system must
				be at least 6 inches below the natural soil surface, and a capping fill must be
				placed over the top of the chamber system to allow for settling.
4. The absorption trenches for a chamber
				system must not be longer than 110 feet.
5. Excavations for absorption trenches for a
				chamber system must be spaced so that there is at least 6 feet between the
				trenches, as measured from the centerline of the trenches.
6. The bottom of the excavation for an
				absorption trench to be used in a chamber system must be level. The owner must
				take such precautions as are necessary to avoid compacting the bottom of the
				trench. Loose or smeared soil must be raked and removed. No vehicles may travel
				on the area of an absorption trench after the excavation of the
				trench.
7. Dosing is required if
				more than 500 linear feet of absorption trench are required.
8. If a chamber system is used in conjunction
				with an absorption bed rather than an absorption trench, the chamber system and
				the absorption bed must comply with the requirements relating to the sizing for
				absorption beds set forth in NAC 444.8358 and 444.8361. The sizing chart
				provided by the health authority pursuant to this section must not be used to
				size an absorption bed in which a chamber system will be placed.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99; A by R100-07,
				  10-31-2007
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8368 - Chamber system: Inspections

Current through June 11, 2024
1. The construction
				of an individual sewage disposal system that uses a chamber system must be
				inspected and verified by an engineer or, if the unit is designed by a
				homeowner as part of a residential system for his or her home, the homeowner.
				The inspections must be conducted as follows:
(a) Following excavation, the bottom of each
				absorption trench or the bottom of the absorption bed, as appropriate, must be
				inspected to ensure that there is no loose soil and that no smearing conditions
				exist; and
(b) Upon completion of
				the installation of the chambers in the absorption trenches or absorption bed,
				the individual sewage disposal system must be inspected to ensure that the
				chamber system and the trenches or bed, as appropriate, have been constructed
				and installed in accordance with the design plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.837 - System utilizing graywater for underground irrigation: General requirements

Current through June 11, 2024
1. Graywater may be
				used for underground irrigation if approved by the administrative authority. A
				homeowner must obtain a permit to construct, alter or install a system that
				uses graywater for underground irrigation from the administrative authority
				before such a system may be constructed, altered or installed.
2. A system that uses graywater for
				underground irrigation:
(a) May be used only
				for a single-family dwelling.
(b)
				Must not be used in soils which have a percolation rate that is greater than
				120 minutes per inch.
(c) Must
				consist of a three-way diversion valve, a holding tank for the graywater and an
				irrigation system.
(d) May be
				equipped with a pump or siphon, or may rely on gravity to cause the water to
				flow to the irrigation system.
(e)
				Must not be connected to a system for potable water.
(f) Must not result in the surfacing of any
				graywater.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8372 - System utilizing graywater for underground irrigation: Application to construct, alter or install system; design criteria

Current through June 11, 2024
1. An
				application to construct, alter or install a system that uses graywater for
				underground irrigation must include:
(a)
				Detailed plans of the system to be constructed, altered or installed;
(b) Detailed plans of the existing and
				proposed sewage disposal system; and
(c) Data from percolation tests conducted in
				accordance with NAC 444.796 to 444.7968, inclusive.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8374 - Alternative absorption system: General requirements

Current through June 11, 2024
1. If an individual sewage disposal system
				that uses absorption trenches pursuant to NAC 444.8352, 444.8354 and 444.8356
				cannot be used because of limiting conditions, including, without limitation,
				the existence of high groundwater, a highly permeable stratum, sloping terrain,
				bedrock, or a layer of semi-impervious soil with a percolation rate that is
				slower than 60 minutes per inch, the health authority may approve the use of an
				alternative absorption system if the alternative absorption system is designed
				by an engineer.
2. Except as
				otherwise required by design modifications approved by the health authority, an
				alternative absorption system must comply with the regulations which pertain to
				a standard disposal trench.
3. A
				connecting fixture used in an alternative absorption system must be a low-flow
				fixture designed for an individual sewage disposal system that is used where
				the percolation rates are greater than 60 minutes per inch. Each such fixture
				must be specifically identified by the engineer on the design plans for the
				alternative absorption system.
4.
				An engineer who is designing an alternative absorption system must consult the
Design Manual for On-site Wastewater Treatment and Disposal
				Systems
which is published by the Environmental Protection Agency
				(reference document number PB83-219907), and contact the health authority for
				design parameters for the alternative absorption system before the engineer
				submits the design plans to the health authority.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8376 - Stepped network of trenches utilizing relief lines: General requirements

Current through June 11, 2024
1. On sloping
				terrain where a conventional individual sewage disposal system cannot be
				installed or is impractical, a stepped network of trenches utilizing relief
				lines between the trenches may be used.
2. A stepped network of trenches utilizing
				relief lines must:
(a) Be designed by an
				engineer; and
(b) Allow the
				effluent from a completely filled trench to overflow into a trench at a lower
				elevation, as shown in subsection 5 of NAC 444.8378.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8378 - Stepped network of trenches utilizing relief lines: Design criteria

Current through June 11, 2024
1. The size of the required absorption area
				for a stepped network of trenches utilizing relief lines must be calculated
				based on percolation testing and must conform to the requirements for the
				sizing of a standard trench. Percolation testing must be conducted at the
				location of each stepped trench and the size of the required absorption area
				must be calculated based on the slowest percolation rate.
2. The invert of the overflow section must be
				located not less than 1 inch or more than 2 inches above the top of the
				disposal trench distribution line. The leaching aggregate must extend at least
				4 inches above the disposal distribution line, as shown in subsection
				5.
3. To minimize the possibility
				that the slope will fail or that effluent will surface down slope, the design
				of the disposal field must comply with the slope requirements set forth in NAC
				444.794.
4. Trenches for a stepped
				network of trenches utilizing relief lines must be spaced at least 10 feet
				apart.
5. The following is a
				diagram of a stepped network of trenches utilizing relief lines:
Click here
				  to view image.
Click here
				  to view image.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8381 - Stepped network of trenches utilizing relief lines: Inspections

Current through June 11, 2024
1. An engineer shall:
(a) Inspect each trench of a stepped network
				of trenches utilizing relief lines before the trench is covered; and
(b) Verify that the elevation of each
				disposal line and invert for overflow conforms with the approved
				plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8382 - Capping fill trench: General requirements

Current through June 11, 2024
1. A capping
				fill trench may be used where conditions relating to high groundwater preclude
				the installation of a standard absorption trench.
2. A capping fill trench must be designed by
				an engineer.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8384 - Capping fill trench: Design criteria

Current through June 11, 2024
1. The soil
				surrounding and beneath the bottom of a capping fill trench must have a
				percolation rate that is greater than 2 minutes per inch, but less than or
				equal to 120 minutes per inch. The required area of the absorption trench must
				be determined by calculating the size of the effective sidewall pursuant to
				subsection 11 of NAC 444.8354.
2. A
				minimum depth of 4 feet must be maintained between the bottom of the capping
				fill trench and the level of the seasonal high groundwater, any impermeable
				barrier or any other limiting features.
3. A capping fill trench must not be
				installed on a slope that is greater than 10 percent.
4. The invert of the disposal drain pipe must
				be placed not more than 12 inches below the existing grade of the native soil.
				At least 2 inches of aggregate must be placed above the disposal drain pipe.
				Untreated building paper, straw, geotextile fabric, or any other similar
				covering approved by the health authority, must be placed above the aggregate
				before the placement of the capping fill.
5. The absorption trenches must be
				constructed before the capping fill is constructed.
6. The capping fill must extend at least 10
				feet beyond the sidewall of the absorption trench. The vegetative mat in the
				fill area must be disrupted by scarification or plowing. The owner of the
				system shall take such precautions as are necessary to prevent compaction of
				the scarified area. No vehicles may travel on the capping fill.
7. The native soil and the applied fill must
				be mixed at their point of interface. The soil to be used as fill must be of a
				texture similar to the native topsoil. The fill must be placed over the
				aggregate to a depth of not less than 12 inches or more than 18
				inches.
8. The fill must be evenly
				graded to provide positive drainage away from the absorption trenches and
				toward the perimeter of the capping fill. The fill material must be placed in
				such a manner so as to prevent the compaction of the scarified soil at the
				interface of the native soil and fill. Plant vegetation must be established on
				the top of the fill to reduce the potential for the erosion of the capping
				fill.
9. A capping fill trench must
				not be used if the soil in which the capping fill is to be placed exhibits
				saturated conditions.
10. The
				following is a diagram of a capping fill trench:
Click here
				  to view image.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8386 - Capping fill trench: Inspections. ( NRS 439.200 , 444

Current through June 11, 2024
1. An engineer shall inspect the construction
				of a capping fill:
(a) Upon the completion of
				the installation of the distribution lines in the absorption
				trenches.
(b) When the fill area
				has been scarified. The engineer shall inspect the fill and native soils to
				ensure that they are not excessively moist and are of similar
				texture.
(c) When the capping fill
				has been placed:
(1) To ensure that there is
				an adequate interface of the fill and soils at the surface; and
(2) To verify the dimensions of the capping
				fill.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8388 - Elevated mound system: General requirements

Current through June 11, 2024
1. An elevated
				mound system consists of:
(a) A suitable fill
				material;
(b) An absorption area
				and distribution network; and
(c) A
				soil cap.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.839 - Elevated mound system: Design criteria

Current through June 11, 2024
1. An elevated
				mound system must not be constructed on a slope that is:
(a) Greater than 6 percent, if the soils
				comprising the slope have percolation rates that are slower than 60 minutes per
				inch; or
(b) Greater than 12
				percent, if the soils comprising the slope have percolation rates that are
				equal to or faster than 60 minutes per inch.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8392 - Elevated mound system: Inspections

Current through June 11, 2024
1. The construction
				of an elevated mound system must be inspected and verified by an engineer when:
(a) The basal area of the elevated mound has
				been scarified;
(b) The
				distribution lines have been placed in the aggregate absorption bed;
(c) The topsoil cap has been placed;
				and
(d) If a dosing system is used,
				all the pumps, switches and alarms associated with the dosing system have been
				installed. The engineer shall verify that the operational liquid levels in the
				dosing tank are set as specified by the design plans.
Nevada Administrative Code › Chapter 444 - Sanitation › SEWAGE DISPOSAL › Absorption and Treatment of Effluent › Section 444.8394 - Pressure distribution system: General requirements

Current through June 11, 2024
1. A pressure distribution system may be used
				in conjunction with an elevated mound, absorption bed or absorption trench
				system.
2. An individual sewage
				disposal system that uses a pressure distribution system must be designed by an
				engineer.
Added to NAC by Bd. of
				  Health by R129-98, eff. 3-25-99
NRS
					 439.200,
					 444.650
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.842 - Definitions

Current through June 11, 2024
As used in NAC 444.842 to 444.8482, inclusive, unless the
				  context otherwise requires, the words and terms defined in NAC 444.8422 to
				  444.8444, inclusive, have the meanings ascribed to them in those
				  sections.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87; A 4-18-90; 4-18-90; 5-27-92; 3-1-94;
				  R208-03, 4-16-2004
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.84225 - "Class 3 modification" defined

Current through June 11, 2024
"Class 3 modification" has the meaning ascribed to it in
				  Appendix I of
				  40 C.F.R.
				  §
										270.42, as adopted by reference in NAC
				  444.8632.
Added to NAC by
				  Environmental Comm'n, eff. 3-1-94; A by R126-03,
				  4-13-2004
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.84235 - "Delisted waste" defined

Current through June 11, 2024
"Delisted waste" means waste that the EPA removed from the
				  list of hazardous wastes located in 40 C.F.R. Part 261, Subpart D, as adopted
				  by reference in NAC
				  444.8632, as a result of a
				  successful petition for a regulatory amendment pursuant to
				  40
				  C.F.R. §
										260.20 or
				  40
				  C.F.R. §
										260.22.
Added to NAC by
				  Environmental Comm'n by R208-03, eff. 4-16-2004; A by
				  R091-16A,
				  eff. 11/2/2016
NRS 459.485,
				  459.490
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8424 - "Disposal" defined

Current through June 11, 2024
"Disposal" has the meaning ascribed to it in
				  NRS
				  459.425.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8426 - "Division" defined

Current through June 11, 2024
"Division" means the Division of Environmental Protection of
				  the State Department of Conservation and Natural Resources.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8427 - "Facility for community recycling" defined

Current through June 11, 2024
"Facility for community recycling" means a facility for
				  recycling hazardous waste which has a yearly capacity that is not more than
				  twice the amount of the type of hazardous waste proposed to be recycled that is
				  generated within the region in this State in which the facility is or is
				  proposed to be located, as determined by the generation rate contained in the
				  biennial report required by the provisions of
				  40 C.F.R. §
										262.41, as adopted by reference in NAC
				  444.8632.
Added to NAC by
				  Environmental Comm'n, eff. 4-18-90; A 9-19-90; 11-9-95; R202-97, 3-5-98;
				  R124-98, 11-2-98; R170-99, 1-26-2000; R037-01, 10-25-2001; R104-02, 10-18-2002;
				  R126-03, 4-13-2004; R175-05, 5-4-2006; R137-07, 1-30-2008; R015-08, 4-17-2008;
				  R153-08, 4-23-2009; A by
				  R091-16A,
				  eff. 11/2/2016
NRS 459.485,
				  459.490
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.84275 - "Facility for community storage" defined

Current through June 11, 2024
"Facility for community storage" means a facility for the
				  storage and consolidation of hazardous waste which has a yearly capacity that
				  is not more than twice the amount of hazardous waste that is generated within
				  the county in which the facility is or is proposed to be located, as determined
				  by the generation rate contained in the biennial report required by the
				  provisions of
				  40 C.F.R. §
										262.41, as adopted by reference in NAC
				  444.8632.
Added to NAC by
				  Environmental Comm'n, eff. 4-18-90; A 9-19-90; 11-9-95; R202-97, 3-5-98;
				  R124-98, 11-2-98; R170-99, 1-26-2000; R037-01, 10-25-2001; R104-02, 10-18-2002;
				  R126-03, 4-13-2004; R175-05, 5-4-2006; R137-07, 1-30-2008; R015-08, 4-17-2008;
				  R153-08, 4-23-2009; A by
				  R091-16A,
				  eff. 11/2/2016
NRS 459.485,
				  459.490
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8428 - "Facility for the management of hazardous waste" defined

Current through June 11, 2024
"Facility for the management of hazardous waste" includes the
				  contiguous land, any structures, other appurtenances or improvements on the
				  land and any mobile units for the treatment of hazardous waste which are used
				  for the management of hazardous waste. Such a facility may contain more than
				  one unit for the management of hazardous waste.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87; A 3-1-94
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.84285 - "Facility for the recycling of hazardous waste" defined

Current through June 11, 2024
Facility for the recycling of hazardous waste" includes the
				  contiguous land and any structures, other appurtenances or improvements on the
				  land which are used for the recycling of hazardous waste.
Added to NAC by
				  Environmental Comm'n, eff. 3-1-94
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.843 - "Hazardous waste" defined

Current through June 11, 2024
1. "Hazardous
				waste" has the meaning ascribed to it in NRS
				NRS
				459.430.
2. The term includes any:
(a) Hazardous waste or constituent of
				hazardous waste which is subject to regulation under 40 C.F.R. Part 261 , as
				adopted by reference in NAC
				444.8632;
(b) Waste containing polychlorinated
				biphenyl; and
(c) Waste brought
				into this State which is designated as hazardous waste in the state of its
				origin unless the waste:
(1) Is remediation
				waste or delisted waste;
(2) Does
				not meet the requirements of paragraph (a); and
(3) Is disposed of at a facility for the
				management of hazardous waste.
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8432 - "Management of hazardous waste" defined

Current through June 11, 2024
"Management of hazardous waste" has the meaning ascribed to
				  it in
				  NRS
				  459.435 and includes, but is not limited to,
				  the open burning of hazardous waste, open detonation of hazardous waste, and
				  incineration of hazardous waste, including burning for the recovery of energy
				  or destruction in boilers or industrial furnaces.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87; A 3-1-94
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8433 - "Mobile unit for the recycling of hazardous waste" defined

Current through June 11, 2024
"Mobile unit for the recycling of hazardous waste" means any
				  transportable equipment which is used to perform recycling of a hazardous waste
				  and is not permanently stationed at a single facility.
Added to NAC by
				  Environmental Comm'n, eff. 3-1-94
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.84335 - "New or expanding facility for the management of hazardous waste" defined

Current through June 11, 2024
"New or expanding facility for the management of hazardous
				  waste" means a facility for the management of hazardous waste:
1. For which a permit is required pursuant to
				40 C.F.R. Part 124, Subparts A , B and G, and Part 270, Subparts A to F,
				inclusive, H, I and J, as adopted by reference in NAC
				444.8632, but which was not
				issued the permit before March 28, 1990; or
2. Which has an effective permit required
				pursuant to 40 C.F.R. Part 124, Subparts A , B and G, and Part 270, Subparts A
				to F, inclusive, H, I and J, as adopted by reference in NAC
				444.8632, and whose owner or
				operator proposes the expansion of an existing unit or the addition of a new
				unit which requires a class 3 modification of the permit.
Added to NAC by
				  Environmental Comm'n, eff. 3-1-94; A by
				  R091-16A,
				  eff. 11/2/2016
NRS 459.485,
				  459.490
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8434 - "Person" defined

Current through June 11, 2024
"Person" has the meaning ascribed to it in
				  NRS
				  459.445.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8436 - "Polychlorinated biphenyl" defined

Current through June 11, 2024
"Polychlorinated biphenyl" has the meaning ascribed to it in
				  NAC 444.9435.
Added to NAC by
				  Environmental Comm'n, eff. 7-22-87
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.8437 - "Recycling" defined

Current through June 11, 2024
"Recycling" means any process which uses hazardous waste to
				  produce products or energy or to recover materials.
Added to NAC by
				  Environmental Comm'n, eff. 4-18-90
NRS 459.485
Nevada Administrative Code › Chapter 444 - Sanitation › FACILITIES FOR MANAGEMENT OF HAZARDOUS WASTE › General Provisions › Section 444.84375 - "Remediation waste" defined

Current through June 11, 2024
"Remediation waste" has the meaning ascribed to it in
				  40
				  C.F.R. §
										260.10, as adopted by reference
				  in NAC 444.8632.
Added to NAC by
				  Environmental Comm'n by R208-03, eff. 4-16-2004; A by
				  R091-16A,
				  eff. 11/2/2016
NRS 459.485,
				  459.490