DDW-2024-007191

Supplemental Specifications For Design and Construction
Of Town of Paradise Culinary Water System Improvements
I. WATER MAIN DESIGN
1.Water Main Design, Minimum Water Main Size (R309-550-5(4))
a.The minimum distribution water main size not serving a fire hydrant shall be 4
inches in diameter, unless the proposed water main pipe will serve picnic sites,
parks, semi-developed camps, primitive camps or roadway rest-stops. The
minimum distribution water main size in which a fire hydrant is to be connected
shall be 8 inches in diameter unless a hydraulic analysis indicates that required
flow and pressures can be maintained by 6-inch lines.
2.Water Main Design, Fire Protection (R309-550-5(5))
a.The design of the distribution system shall be consistent with fire flow
requirements as determined by the local fire code official. If the local fire
authority does not specify the minimum fire flow requirements, the distribution
shall be designed to provide a minimum of 1,000 gallons per minute (GPM) while
maintaining a minimum of 30 psi residual pressure to all connections to the water
distribution system during average-day peak demand plus the specified fire flow.
b.The location of fire hydrants shall be consistent with State-adopted fire code as
determined by the local fire code official, however, fire hydrants shall be spaced at
no greater than 500 feet apart along public corridors, and/or, every dwelling shall
be located within 250 feet of a fire hydrant.
c.If a fire hydrant does not exist within 250 feet of a new dwelling being
constructed along a public corridor where an existing distribution main line exists,
the property owner(s) shall be required to install a new fire hydrant in accordance
with Paradise Town Water System Standards Drawings and Specifications and
connect it to the existing water distribution main line in the public corridor to
provide for adequate fire protection for the dwelling. All costs associated with
furnishing and installing the fire hydrant shall be the responsibility of the private
property owner(s) of the new dwelling.
d.The owners of new dwellings which are constructed further than 250 feet from a
public corridor shall be required to extend an 8" water distribution main line to a
point on the property in which a fire hydrant can be connected to and placed
within 250 feet of the dwelling. The main waterline and the fire hydrant shall be
dedicated to and owned and maintained by the Town of Paradise. The private
property owner shall be required to construct a minimum 16-foot wide all weather
surface road along the waterline to the fire hydrant and grant to the Town of
Paradise a 30-foot wide waterline and access road easement. The water meter
and service connection for the dwelling shall be connected to the 8" fire hydrant
Page 1
line within 10 feet of the fire hydrant but no closer than 5 feet to said fire hydrant.
All costs associated with furnishing and installing the fire hydrant shall be the
private property owner(s) of the new dwelling.
3.Water Main Design, Geologic Considerations, contaminated soils (R309-550-5(6))
a.The character of the soil through which water mains are to be laid shall be considered.
Special design and burial techniques shall be employed for by the Town of Paradise
in areas of geologic hazard (e.g., slide zones, fault zones, river crossings, etc.) Water
supply conduits and major service lines crossing known fault areas should be either
designed to accommodate significant differential movement of the ground, or be
valved immediately above and below the points of the fault crossing to allow control
of water flow, in case of pipe rupture during an earthquake event.
b.Water systems should be designed to provide alternative flow paths for major conduits
in regions of known geologic hazards.
4.Water Main Design, Corrosive Soils and Waters (R309-550-5(9))
a.Consideration shall be given to the buried pipe system and component materials to be
used when corrosive soils or waters will be encountered. All buried metallic fittings
or components shall be throughly wrapped in 6 mil polyethylene sheeting and tape
wrapped to the fitting to prevent contact with the native soils. All buried water pipe
lines shall be of PVC or polyethylene material and no special treatment is required in
soils in the Paradise region.
5.Water Main Design, Special Conditions In Areas of Contamination (R309-550-5(10))
a.A preliminary field evaluation shall be performed to determine if there is any potential
for the distribution waterlines to be installed areas with contaminated soil. Soil
sampling and testing may be required by the water system or project engineer to further
evaluate suspect soil conditions. Where distribution systems are installed in areas of
contaminated soils:
(i)pipe and joint materials which are not susceptible to contamination, such as
permeation by organic compounds, shall be used; and,
(ii) non-permeable materials shall be used for all portions of the system including
water mains, service connections, and hydrant leads.
(iii)all soil in the pipe trench shall be replaced with granular borrow backfill from
a non-contaminated source with a maximum aggregate size of ½" diameter in
the pipe backfill zone per the trench detail shown on Standard Drawing Sheet
6 and granular backfill borrow with aggregate size no larger than 4" diameter in
the remainder of the trench. The soil replacement area shall extend to 6" below
the bottom of the pipe to 12" on each side of the pipe and to the surface of the
trench.
Page 2
6.Water Main Design, Water Mains and Other Sources of Contamination (R309-550-
5(11))
a.Caution shall be exercised when locating water mains at or near certain sites such as
sewage treatment plants or industrial complexes. Individual septic tanks shall be
located and avoided. The Division of Drinking Water shall be contacted to establish
specific design requirements prior to locating water mains near a source of
contamination.
b.All new water distribution lines for the Paradise Town Culinary Water System shall be
colored blue and metallic utility warning tape shall be buried in the distribution line
trench with the words “WATERLINE BURIED BELOW” clearly printed on the
warning tape. Installation of the warning tape shall conform to the trench detail on
Standard Drawing Sheet 13.
c.Consideration should be given to providing appropriate separation between water and
other utilities for operational and contamination reasons.
7.Water Main Design, Isolation Valves (R309-550-5(8))
a.Valves shall be located not more than 500 foot intervals in commercial districts and
not more than one block or 800 foot intervals in other districts. The water system
and/or project engineer shall determine on a case by case basis if additional valves
are required other than those specified above, especially in subdivisions or
developments where multiple distribution main lines are joined together at
intersections.
II. COMPONENT MATERIALS AND DESIGN
1.Component Materials and Design, ANSI/NSF Standard for Health Effects (R309-
550-6(1))
a.All materials that may come in contact with drinking water, including pipes, gaskets,
lubricants and O-Rings, shall be ANSI-certified as meeting the requirements of
ANSI/NSF Standard 61, Drinking Water System Components - Health Effects. To
permit field-verification of this certification, all components shall be appropriately
stamped with the NSF logo.
2. Component Materials and Design, Asbestos and Lead (R309-550-6(2))
a.The use of asbestos cement pipe (commonly referred to as Transite) shall not be
allowed.
b.Pipes and pipe fittings installed after January 4, 2014, shall be “lead free” in
accordance with Section 1417 of the Federal Safe Drinking Water Act. They shall be
certified as meeting ANSI/NSF 372 or Annex G of ANSI/NSF 61, except, that the
Community Fire Safety Act of 2013 exempts fire hydrants from the lead free
requirements of Section 1417.
Page 3
3.Component Materials and Design, Used Materials (R309-550-6(4))
a.Previously used distribution pipe, fittings, valves, or other distribution system
components are prohibited from use in construction of new distribution lines or for any
repairs made to the distribution system
4.Component Materials and Design, Air Relief Valves and Blow-offs (R309-550-6(6.a))
a.At high points in water mains where air can accumulate, provisions shall be made to
remove air by means of hydrants or air relief valves.
b.The open end of the air relief vent pipe from automatic valves shall be provided with
a #14 mesh, non-corrodible screen and a downward elbow, and where possible, be
extended to at least one foot above grade. Alternatively, the open end of the pipe may
be extended to as little as one foot above the top of the pipe if the valve’s chamber is
not subject to flooding, or if it meets the requirements of (7) Chamber Drainage.
c.Blow-offs or air relief valves shall not be connected directly to a sewer.
d.Adequate number of hydrants or blow-offs shall be provided to allow periodic flushing
and cleaning of water lines.
e.The air relief valve shall be installed in a manner to prevent it from `valve shall be
provided to permit servicing of an air relief valve.
5.Component Materials and Design, Chamber Drainage (R309-550-6(7.b))
a.Chambers shall be provided with a drain to daylight, if possible. Where this is not
possible, underground gravel-filled absorption pits may be used if the site is not subject
to flooding and conditions will assure adequate drainage. Sump pumps may also be
considered if a drain to daylight or absorption pit is not feasible.
III. SUPPLEMENTAL CONSTRUCTION REQUIREMENTS
1.Separation of Water Mains and Transmission Lines from Sewers, Basic Separation
Standards (R309-550-7(1.b))
a.The horizontal distance between water lines and sanitary sewer lines shall be at
least10 feet. Where a water main and a sewer line must cross, the water main shall
be at least 18 inches above the sewer line. Separation distances shall be measured
edge-to-edge (i.e., from the nearest edges of the facilities).
b.Water mains and sewer lines shall not be installed in the same trench.
c.Where local conditions make it impossible to install water or sewer lines at separation
distances required by subsection (a), the sewer pipes are in good condition, and there
is not high groundwater in the area, it may be acceptable if the design includes a
minimum horizontal separation of 6 feet and a minimum vertical clearance of 18 inches
with the waterline being above. In order to determine whether the design is acceptable,
the following information shall be submitted as part of the plans for review:
Page 4
(i)reason for not meeting the minimum separation standard;
(ii)location where the water and sewer line separation is not being met;
(iii)horizontal and vertical clearance that will be achieved;
(iv)sewer line information including pipe material, condition, size, age, type of
joints, thickness or pressure class, whether the pipe is pressurized or not, etc.;
(v)water line information including pipe material, condition, size, age, type of
joints, thickness or pressure class, etc.;
(vi)ground water and soil conditions; and,
(vii)any mitigation efforts.
If the basic separation standards as outlined in subsections (a) though (c) above
cannot be met, an exception to the rule can be applied for with additional mitigation
measures to protect public health, in accordance with R309-105-6(2)(b).
2.Installation of Water Mains, Dropping Pipe into Trench (R309-550-8(4))
a.Under no circumstances shall the pipe or accessories be dropped into the trench.
3.Installation of Water Mains, Burial Cover (R309-550-8(5))
a.Distribution waterlines shall be buried a minimum of 4 feet from top of pipe to finish
ground surface, except in the UDOT road right-of-ways where 5 minimum bury is
required.
4.Installation of Water Mains, Pressure and Leakage Testing (R309-550-8(7))
a. All types of installed pipe shall be pressure tested and leakage tested in accordance
with AWWA Standard C600-10.
5.Installation of Water Mains, Surface Water Crossings (R309-550-8(8))
a.Above Water Crossings
(i)The pipe shall be adequately supported and anchored, protected from damage
and freezing, and accessible for repair or replacement.
b.Underwater Crossings
(i)A minimum cover of 2 feet or greater, as local conditions may dictate, shall be
provided over the pipe.
c.When crossing water courses that are greater than 15 feet in width, the following shall
be provided:
(i) Pipe with joints shall be of special construction, having restrained joints for
joints within the surface water course and flexible restrained joints at both edges
of the water course.
Page 5
(ii) Isolation valves shall be provided on both sides of the water crossing at
locations not subject to high ground water or flooding, so that the section can be
isolated for testing or repair.
(iii) A means shall be provided, such as a sampling tap, not subject to flooding, to
allow for representative water quality testing on the upstream and downstream
sides of the crossing.
(iv) A means shall be provided to pressure test the underground water crossing pipe.
6.Installation of Water Mains, Sealing Pipe Ends During Construction (R309-550-
8(9))
(a)The open ends of all pipelines under construction shall be covered and effectively
sealed at the end of the day's work. Service lines shall be capped until connected
for service after the main distribution line has been adequately disinfected.
7.Service Connections and Plumbing, Plumbing & Service Meters and Building Service
Line (R309-550-11(2 & 5))
(a)Water services and plumbing shall conform to the State-adopted Plumbing Code.
(b) Pipes and pipe fittings installed after January 4, 2014, shall be “lead-free” in
accordance with Section 1417 of the federal Safe Drinking Water Act. They shall be
certified meeting the ANSI/NSF 372 or Annex G of ANSI/NSF 61.

Page 6