Virginia Administrative Code
Title 9 - ENVIRONMENT
Agency 25 - STATE WATER CONTROL BOARD
Chapter 740 - WATER RECLAMATION AND REUSE REGULATION
Part III - Application and Technical Requirements
Section 9VAC25-740-110 - Design criteria
Universal Citation: 9 VA Admin Code 25-740-110
Current through Register Vol. 41, No. 3, September 23, 2024
A. Reclamation system.
1. The design of systems for the
reclamation of municipal wastewater or source water derived from a municipal
wastewater treatment works shall adhere to the standards of design and
construction specified in the Sewage Collection and Treatment Regulations
(9VAC25-790) and other applicable engineering standards and regulations. Design
standards for reclamation systems of industrial wastewater or source water
derived from an industrial wastewater treatment works shall be determined and
evaluated on a case-by-case basis.
2. Ultraviolet (UV) disinfection for
reclamation systems:
a. For Level 1 reclaimed
water:
(1) Designs for UV disinfection shall
be validated in accordance with NWRI Ultraviolet Disinfection Guidelines for
Drinking Water and Water Reuse, Second Edition (2003) (guidelines) to meet a UV
design dosage greater than or equal to 100,000
uWsec/cm2 (MS-2 dose) under peak flow and a minimum
UV transmittance of 55% at 254 nm. A lower UV disinfection dosage may be
authorized by the department if demonstrated to meet at least one of the
bacteria standards for Level 1 specified in
9VAC25-740-70
A, and where microbial testing is used to validate the efficacy of the UV
disinfection dose in accordance with the guidelines. For the lower disinfection
dose, the department may develop reclaimed water turbidity standards and
minimum UV transmittance requirements that are unique to the UV disinfection
process of the reclamation system.
(2) The UV disinfection system shall be
designed to supply the minimum dose specified in subdivision 2 a (1) of this
subsection at all times. The system may be automated to immediately adjust the
UV disinfection dosage in response to changes in the UV system influent
reclaimed water flow and quality.
b. UV disinfection for Level 2 reclaimed
water shall be designed, constructed, and operated in accordance with the
Sewage Collection and Treatment Regulations (9VAC25-790) for UV disinfection of
secondary effluent.
B. Reclaimed water distribution system.
1. All reclaimed water distribution systems
shall be designed and constructed in accordance with this chapter and
applicable sections of the Sewage Collection and Treatment Regulations
(9VAC25-790) pertaining to force mains, so that:
a. Reclaimed water does not come into contact
with or otherwise contaminate a potable water system;
b. The structural integrity of the system is
provided and maintained; and
c. The
capability for inspection, maintenance, and testing is maintained.
2. For a reclaimed water
distribution system, the following shall be implemented as part of the
cross-connection and backflow prevention program submitted with the RWM plan:
a. There shall be no direct cross-connections
between the reclaimed water distribution system and a potable water supply
system.
b. The reclaimed water
distribution system shall be in compliance with the cross connection control
and backflow prevention requirements of Article 4 (12VAC5-590-580
et seq.) of Part II of the Commonwealth of Virginia Waterworks Regulations and,
when applicable, the reclaimed water distribution system shall also be in
compliance with the Virginia Statewide Building Code (13VAC5-63).
c. Potable water may be used to supplement
reclaimed water for a reuse, provided there is an air gap separation of at
least eight inches between the potable water and the reclaimed water or a
reduced pressure principle backflow prevention device installed at the potable
water service connection to the reuse. The installation of the reduced pressure
principal backflow prevention device shall allow for proper inspection and
testing of the device.
d. Reclaimed
water shall not be returned to the reclaimed water distribution system after
the reclaimed water has been delivered to an end user.
3. In-ground reclaimed water distribution
pipelines shall be installed and maintained to achieve minimum separation
distance and configurations as follows:
a. No
reclaimed water distribution pipeline shall pass within 50 feet of a potable
water supply well, potable water supply spring or water supply intake that are
part of a regulated waterworks. The same separation distance shall be required
between a reclaimed water distribution pipeline and a nonpublic or private
potable water supply well or spring, but may be reduced to not less than 35
feet provided special construction and pipe materials are used to obtain
adequate protection of the potable water supply.
b. Reclaimed water distribution pipeline
shall be separated horizontally by at least 10 feet from a water main. The
distance shall be measured edge-to-edge. When local conditions prohibit this
horizontal separation, the reclaimed water distribution pipeline may be laid
closer provided that the water main is in a separate trench or an undisturbed
earth shelf located on one side of the reclaimed water distribution pipeline
and the bottom of the water main is at least 18 inches above the top of the
reclaimed water distribution pipeline. Where this vertical separation cannot be
obtained, the reclaimed water distribution pipeline shall be constructed of
water pipe material in accordance with AWWA specifications and pressure tested
in place without leakage prior to backfilling. The hydrostatic test shall be
conducted in accordance with the AWWA standard (ANSI/AWWA C600-05, effective
December 1, 2005) for the pipe material, with a minimum test pressure of 30
psi.
c. Distribution pipeline that
conveys Level 1 reclaimed water shall be separated horizontally by at least two
feet from a sewer line. The distance shall be measured edge-to-edge. When local
conditions prohibit this horizontal separation, the reclaimed water
distribution pipeline may be laid closer provided that the sewer line is in a
separate trench or an undisturbed earth shelf located on one side of the
reclaimed water distribution pipeline and the bottom of the reclaimed water
distribution pipeline is at least 18 inches above the top of the sewer line.
Where this vertical separation cannot be obtained, either the reclaimed water
distribution pipeline or the sewer line shall be constructed of water pipe
material in accordance with AWWA specifications and pressure tested in place
without leakage prior to backfilling. The hydrostatic test shall be conducted
in accordance with the AWWA standard (ANSI/AWWA C600-05, effective December 1,
2005) for the pipe material, with a minimum test pressure of 30 psi.
d. Reclaimed water distribution pipeline
shall cross under water main such that the top of the reclaimed water
distribution pipeline is at least 18 inches below the bottom of the water main.
When local conditions prohibit this vertical separation, the reclaimed water
distribution pipeline shall be constructed of AWWA specified water pipe and
pressure tested in place without leakage prior to backfilling, in accordance
with the provisions of the Sewage Collection and Treatment Regulations
(9VAC25-790). Where reclaimed water distribution pipeline crosses over water
main, the reclaimed water distribution pipeline shall:
(1) Be laid to provide a separation of at
least 18 inches between the bottom of the reclaimed water distribution pipeline
and the top of the water main.
(2)
Be constructed of AWWA approved water pipe and pressure tested in place without
leakage prior to backfilling, in accordance with the provisions of the Sewage
Collection and Treatment Regulations (9VAC25-790).
(3) Have adequate structural support to
prevent damage to the water main.
(4) Have joints placed equidistant and as far
as possible from the water main joints.
e. Sewer line shall cross under distribution
pipeline that conveys Level 1 reclaimed water such that the top of the sewer
line is at least 18 inches below the bottom of the reclaimed water distribution
pipeline. When local conditions prohibit this vertical separation, the sewer
line shall be constructed of AWWA specified water pipe and pressure tested in
place without leakage prior to backfilling, in accordance with the provisions
of the Sewage Collection and Treatment Regulations (9VAC25-790). Where sewer
line crosses over distribution pipeline that conveys Level 1 reclaimed water,
the sewer line shall:
(1) Be laid to provide
a separation of at least 18 inches between the bottom of the sewer line and the
top of the reclaimed water distribution pipeline.
(2) Be constructed of AWWA approved water
pipe and pressure tested in place without leakage prior to backfilling, in
accordance with the provisions of the Sewage Collection and Treatment
Regulations (9VAC25-790).
(3) Have
adequate structural support to prevent damage to the reclaimed water
distribution pipeline.
(4) Have
joints placed equidistant and as far as possible from the reclaimed water
distribution pipeline joints.
f. No reclaimed water distribution pipeline
shall pass through or come into contact with any part of a sewer manhole.
Distribution pipeline that conveys Level 1 reclaimed water shall be separated
horizontally by at least two feet from a sewer manhole whenever possible. The
distance shall be measured from the edge of the pipe to the edge of the manhole
structure. When local conditions prohibit this horizontal separation, the
manhole shall be of watertight construction and tested in place.
4. No setback distance is required
to any nonpotable water supply well and no vertical or horizontal separation
distances are required between above-ground reclaimed water pipelines and
potable water, sewer or wastewater pipelines.
5. All reclaimed water outlets shall be of a
type, or secured in a manner, that permits operation by authorized personnel.
Public access to reclaimed water outlets shall be controlled in areas where
reclaimed water outlets are accessible to the public as follows:
a. If quick connection couplers are used on
above-ground portions of the reclaimed water distribution system, they shall
differ materially from those used on the potable water supply.
b. Use of above-ground hose bibs, spigots or
other hand-operated connections that are standard on local potable water
distribution systems shall be prohibited for use on the local reclaimed water
distribution system. If above-ground hose bibs, spigots or other hand-operated
connections are used on the reclaimed water distribution system, they must
differ materially from those used on the local potable water distribution
system and must be clearly distinguishable as reclaimed water connections
(i.e., painted purple, valve operation with a special tool) so as not to be
mistaken for potable water connections. Where below-grade vaults are used to
house reclaimed water connections, the connections in the vault may have
standard potable water distribution system thread and bib size services
provided the bib valves can be operated only by a special tool. The below-grade
vaults shall also be labeled as being part of the reclaimed water distribution
system (i.e., painted purple, labeled).
6. Existing potable water distribution
systems, sewer and wastewater collection systems, and irrigation distribution
systems may be converted for use as reclaimed water distribution systems. Not
less than 90 days prior to such conversions, excluding the conversion of
irrigation distribution systems that are not under common ownership or
management with reclamation systems, SRSs, or reclaimed water distribution
systems providing reclaimed water to the irrigation distribution systems, the
following shall be submitted to the department for approval:
a. A system conversion plan that contains:
(1) Information on the location and
identification of the facilities to be converted;
(2) Information on the location of all
connections to the facilities to be converted;
(3) A description of procedures to be used to
ensure that all connections and cross-connections shall be eliminated. This may
include physical inspections, dye testing, or other testing
procedures;
(4) A description of
the physical and operational modifications necessary to convert the existing
system to a reclaimed water distribution system that shall comply with
applicable design criteria in subsections B and C of this section, and the
operations and maintenance requirements of
9VAC25-740-140
D 2;
(5) A description of cleaning
and disinfection procedures to be followed before the converted facilities will
be placed into operation for reclaimed water distribution. For the conversion
of existing sewer and wastewater collection systems, cleaning and disinfection
of the system shall be conducted in accordance with AWWA standards (ANSI/AWWA
C651-05, effective June 1, 2005). Procedures to dispose of flush water from
cleaning or disinfection shall be those described in the operations and
maintenance manual of the system for the disposal of flush water from
maintenance activities;
(6) An
assessment of the physical condition and integrity of facilities to be
converted; and
(7) Reasonable
assurance that cross-connections will not result, public health will be
protected, and the integrity of potable water, wastewater, and reclaimed water
systems will be maintained when the conversion is made.
b. An operations and maintenance manual for
the system converted to a reclaimed water distribution system in accordance
with
9VAC25-740-140
B, containing at a minimum the items specified in
9VAC25-740-140
D.
7. Tank trucks may be
used to transport and distribute reclaimed water only if the following
requirements are met:
a. The truck is not used
to transport potable water that is used for drinking water or food
preparation;
b. The truck is not
used to transport waters or other fluids that do not meet the requirements of
this chapter, unless the tank has been evacuated and properly cleaned prior to
the addition of the reclaimed water;
c. The truck is not filled through on-board
piping or removable hoses that may subsequently be used to fill tanks with
water from a potable water supply; and
d. The reclaimed water contents of the truck
are clearly identified as nonpotable water on the truck.
8. Reclaimed water distribution systems shall
have the following identification, notification and signage:
a. Reclaimed water piping with an outer
diameter greater than or equal to one inch, installed in-ground after January
29, 2014, or above-ground shall display the words "CAUTION: RECLAIMED WATER -
DO NOT DRINK" by one or more of the following methods:
(1) Stenciling or stamping the piping with
two-inch to three-inch letters on opposite sides of the piping, placed at
intervals of three to four feet. For piping less than two inches and greater
than or equal to one inch outer diameter, lettering shall be at least 5/8 inch,
placed on opposite sides of the piping and repeated at intervals of one
foot.
(2) Wrapping the piping with
purple (Pantone 522) polyethylene vinyl wrap or adhesive tape, placed
longitudinally at three-foot intervals. The width of the wrap or tape shall be
at least three inches, and shall display the required caution statement in
either white or black lettering.
(3) Permanently affixing purple (Pantone 522)
vinyl adhesive tape on top of the piping, parallel to the axis of the piping,
fastened at least every 10 feet to each pipe section, and continuously for the
entire length of the piping. The width of the tape shall be at least three
inches, and shall display the required caution statement in either white or
black lettering.
(4) Using an
alternate method that assures the caution statement will be displayed to
provide an equivalent degree of public notification and protection if approved
by the department.
b.
Additional methods, if provided, to identify reclaimed water piping with an
outer diameter greater than or equal to one inch (e.g., permanently color
coding the piping Pantone 522 purple), shall not obscure any portion of the
caution statement required pursuant to subdivision 8 a of this
subsection.
c. Reclaimed water
piping with an outer diameter less than one inch shall require the following:
(1) Where installed in-ground after January
29, 2014, or above ground, the piping shall be permanently color coded purple
(Pantone 522). Longitudinal purple striping of the piping may be allowed
provided the cumulative width of the stripes is greater than or equal to 25% of
the outer pipe diameter.
(2) Where
installed within a building or structure, the piping shall have in addition to
color coding required per subdivision 8 c (1) of this subsection, the words
"CAUTION: RECLAIMED WATER - DO NOT DRINK" embossed, stenciled, stamped, or
affixed with adhesive tape on the piping, placed on opposite sides of the
piping, and repeated at intervals of one foot. Lettering of the caution
statement shall be of a size easily read by a person with normal vision at a
distance of two feet.
d.
All other above-ground portions of the reclaimed water distribution system
including reclaimed water valves, outlets (including fire hydrants) and other
appurtenances shall be color coded, taped, labeled, tagged or otherwise marked
to notify the public and employees that the source of the water is reclaimed
water, not intended for drinking or food preparation. For reclaimed water
treated to Level 2, such notification shall also inform employees to practice
good personal hygiene for incidental contact with reclaimed water and the
public to avoid contact with the reclaimed water.
e. Each mechanical appurtenance of a
reclaimed water distribution system shall be colored purple and legibly marked
"RECLAIMED WATER" to identify it as a part of the reclaimed water distribution
system and to distinguish it from mechanical appurtenances of a potable water
distribution system or a wastewater collection system.
f. Valve boxes for reclaimed water
distribution systems shall be painted purple. Valve covers for reclaimed water
distribution lines shall not be interchangeable with potable water supply valve
covers.
g. Existing potable water
distribution systems, sewer or wastewater collection systems, or irrigation
distribution systems that are converted to reclaimed water distribution systems
in accordance with subdivision 6 of this subsection after January 29, 2014,
shall be retrofitted to meet identification, notification, and signage
requirements of subdivision 8 of this subsection with the following exceptions:
(1) For converted systems requiring the
submission of a conversion plan and an operations and maintenance manual in
accordance with subdivision 6 of this subsection, existing in-ground converted
piping shall be retrofitted to a distance of not less than 10 feet from
locations where the piping crosses or is crossed by a potable water supply line
or sanitary sewer line.
(2) For all
other converted systems, identification, notification, and signage requirements
specified in subdivision 8 of this subsection for in-ground piping shall not
apply.
9. All
reclaimed water distribution systems shall be maintained to minimize losses and
to ensure safe and reliable conveyance of reclaimed water such that the
reclaimed water will not be degraded below the standards, excluding CAT
standards, required for the intended reuse or reuses in accordance with
9VAC25-740-90.
C. Storage requirements.
1. To ensure reliable reclamation system
operation in accordance with the requirements of this chapter, all reclamation
systems shall have the ability to implement one or more of the following
options:
a. Store reclaimed water;
b. Discharge reclaimed water to another
permitted reuse system, if applicable;
c. Discharge reclaimed water to surface
waters of the state under a VPDES permit;
d. Suspend all or a portion of water
reclamation for planned periods; or
e. In the case of a satellite reclamation
system, discharge reclaimed water into the sewage collection system from which
it received source water for reclamation.
2. Storage for reclaimed water shall be
required only when subdivision 1 b, c, or d of this subsection or, as
applicable, subdivision 1 e of this subsection are not available or approved by
the department.
3. Separate,
off-line storage shall be provided for reject water of the reclamation system
unless the reject water can be diverted to another permitted reuse system,
discharged to surface waters of the state under a VPDES permit, returned
directly to an appropriate point of treatment in the reclamation system, or in
the case of a satellite reclamation system, sent to the sewage collection
system from which the reclamation system received water for reclamation. Where
reject water is stored, provisions shall be incorporated into the design of the
reclamation system to distribute the reject water from storage to other parts
of the reclamation system for additional or repeated treatment.
4. Storage for reject water may also be used
for emergency storage to ensure Reliability Class I of the reclamation system
in accordance with
9VAC25-740-130.
5. Reject water and reclaimed water may be
stored in watertight tanks placed above-ground or in-ground. Labeling of tanks
used for reject water storage, system storage or nonsystem storage shall be in
accordance with
9VAC25-740-160
B, and shall, at a minimum, identify the contents of each tank as either reject
water or reclaimed water.
6. For
all impoundments or ponds that are used for reject water storage or system
storage, with the exception of impoundments and ponds specified in subdivision
7 of this subsection, the following are required:
a. A minimum two-foot freeboard shall be
maintained at all times. Any emergency discharge or overflow device and the
disposition of the overflow discharge shall be identified in the engineering
report.
b. There shall be a minimum
two-foot separation distance between the bottom of the impoundment or pond and
the seasonal high water table.
c.
The impoundment or pond shall have a properly designed and installed synthetic
liner of at least 20 mils thickness or a compacted soil liner of at least one
foot thickness. Synthetic liners shall be installed in accordance with the
manufacturer's specifications and recommendations. The soil liner shall be
composed of separate lifts not to exceed six inches. The maximum coefficient of
permeability for the synthetic and soil liners shall not exceed
1x10-6 cm/sec and 1x10-7
cm/sec, respectively. A plan of quality assurance and quality
control which substantiates the adequacy of the liner and its installation
shall be included in or shall accompany the preliminary engineering report or
supporting documentation for the CTC. Documentation of quality assurance and
quality control activities on liner installation along with permeability test
results, shall be submitted with the statement of construction completion to
the department.
d. If the
requirements of subdivision 6 b or c of this subsection cannot be met, the
department may allow use of the impoundment or pond for storage provided that a
groundwater monitoring plan for the facility is submitted to the department for
review and approval. The plan shall identify the direction of groundwater flow
and the proposed location and depth of groundwater monitoring wells at the
location of the impoundment or pond, parameters to be monitored, a monitoring
schedule, and procedures for proper sample collection and handling.
e. The design of the impoundment or pond
shall prevent the entry of surface water or storm water runoff from outside the
facility embankment or berm.
f.
Where the embankment of the impoundment or pond is composed of soil, the
embankment shall have:
(1) A top width of at
least five feet;
(2) Interior and
exterior slopes no steeper than one foot vertical to three feet horizontal
unless alternate methods of slope stabilization are used;
(3) Shallow-rooted vegetative cover or other
soil stabilization to prevent erosion; and
(4) Erosion stops and water seals installed
on all piping that penetrates the embankment.
g. There shall be routine maintenance of the
impoundment or pond liner, embankments and access areas.
h. Impoundments and ponds shall be sited to
avoid areas of uneven subsidence, sinkholes, or unstable soils unless
provisions are made for their correction. Results from field and laboratory
tests from an adequate number of test borings and soil samples shall be the
basis for computations pertaining to permeability and stability
analyses.
i. Impoundments or ponds
shall not be located on a floodplain unless protected from inundation or damage
by a 100-year frequency flood event.
j. There shall be a minimum setback distance
measured horizontally from the perimeter of the storage impoundment or pond to
potable water supply wells and springs, and public water supply intakes, of 100
feet for storage of Level 1 reclaimed water and 200 feet for storage of Level 2
reclaimed water or reject water.
7. Reject water storage and system storage
impoundments or ponds that exist upon October 1, 2008, shall be exempt from the
design, construction, and operation requirements specified in subdivision 6 of
this subsection until such time these facilities are modified or expanded, or
unless they have failed to comply with other existing regulatory or permitting
requirements.
8. The capacity of
reject water storage and system storage facilities, including impoundments,
ponds or tanks, shall be as follows:
a. For
reject water, the capacity of the storage facility shall, at a minimum, be the
volume equal to the designated design flow of the reclamation system unless
other options exist for immediate disposal or retreatment of the reject water
in addition to storage.
b. For
reclaimed water, the capacity of the storage facility shall be determined by
the seasonal variability in demand, intended reuses with intermittent, variable
demand, such as fire protection or fighting; and the availability of other
options to generate or manage reclaimed water as specified in subdivision 1 of
this subsection.
(1) Where there is no or
minimal seasonal variability in demand and no other options are available for
alternative generation or management of all or a portion of the reclaimed
water, the capacity of the storage facility shall, at a minimum, be the volume
equal to three times that portion of the reclamation system designated design
flow for which no other options to generate or manage the reclaimed water from
the reclamation system are permitted.
(2) Where there is seasonal variability in
demand and no other options are available for alternative generation or
management of all or a portion of the reclaimed water during periods of low
seasonal demand, storage facilities shall have sufficient storage capacity to
assure the retention of the reclaimed water under conditions and circumstances
that preclude reuse. The methods, assumptions and calculations used to
determine the system storage requirements shall be provided and justified in
the preliminary engineering report or supporting documentation for the CTC.
Analytical means of determining system storage requirements, such as water
balance calculations or computer hydrological programs, shall be used and shall
account for all water inputs into the system. Analysis shall be based on
site-specific data. Irrigation efficiencies or rainfall efficiencies shall not
be used in storage volume determinations.
9. Requirements specified in subdivision 6 of
this subsection shall not apply to impoundments or ponds used for nonsystem
storage with the exception of those specified in subdivision 11 of this
subsection.
10. Landscape
impoundments may also be used for nonsystem storage of reclaimed water prior to
another subsequent reuse, such as irrigation.
11. Impoundments or ponds used for nonsystem
storage of reclaimed water, including landscape impoundments, for subsequent
irrigation reuse on sites under common ownership or management with the
reclamation system or satellite reclamation system that provides reclaimed
water to the sites, shall comply with the design, construction and operation
requirements specified in subdivision 6 of this subsection.
12. For impoundments or ponds used for
nonsystem storage of reclaimed water, the following setback distances shall
apply:
a. There shall be a 50-foot minimum
setback distance measured horizontally from the perimeter of the impoundment or
pond to property lines.
b. For an
impoundment or pond with a liner meeting the requirements specified in
subdivision 6 c of this subsection, there shall be a minimum setback distance
measured horizontally from the perimeter of the storage impoundment or pond to
potable water supply wells and springs, and public water supply intakes, of 100
feet for storage of Level 1 reclaimed water and 200 feet for storage of Level 2
reclaimed water.
c. For an unlined
impoundment or pond, there shall be a minimum setback distance measured
horizontally from the perimeter of the storage impoundment or pond to potable
water supply wells and springs, and public water supply intakes, of 200 feet
for storage of Level 1 reclaimed water and 400 feet for storage of Level 2
reclaimed water.
13.
Where more than one setback distance applies to storage for reclaimed water or
reject water, the greater setback distance shall govern.
14. Reclaimed water system storage facilities
shall be designed and operated to prevent a discharge to surface waters of the
state except in the event of a storm greater than the 25-year, 24-hour storm.
Reclaimed water nonsystem storage facilities, including landscape impoundments
used for nonsystem storage, shall be designed and operated to prevent a
discharge to surface waters of the state, except in the event of a storm
greater than the 10-year, 24-hour storm.
15. Permittees shall maintain current
inventories of reject water storage, system storage and nonsystem storage
facilities located within the service area of the RWM plan. An inventory or a
revised inventory shall be submitted as part of the RWM plan in the permit
application. For the addition of new storage facilities to an inventory after
permit issuance, the permittee shall submit to the department an amended
inventory at least 30 days before reclaimed water will be introduced into the
new storage facilities. An inventory of reject water storage, system storage
and nonsystem storage facilities shall include the following:
a. Name or identifier for each storage
facility;
b. Location of each
storage facility (including latitude and longitude);
c. Function of each storage facility (i.e.,
reject water storage, system storage or nonsystem storage);
d. Type of each storage facility (i.e.,
covered tank, uncovered tank, lined pond, unlined pond, etc.); and
e. Location (latitude and longitude) and
distance of the nearest potable water supply well and spring, and public water
supply intake, to each storage facility within 450 feet of that
facility.
16. Storage
requirements as specified in this subsection shall not apply to reclaimed water
storage facilities provided at the site of an industrial end user where such
facilities are regulated by an existing water permit issued by the department
to the industrial end user, or the industrial end user is also the generator of
reclaimed water stored in the facilities and is excluded under
9VAC25-740-50
A.
Statutory Authority: § 62.1-44.15 of the Code of Virginia.
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