See the definition of Facility Plan in Section
003. (3-24-22)
01.
Facility Plans Required. All
new public drinking water systems, and existing public drinking water systems
undergoing material modification or expansion, are required to have a current
facility plan that shall address all applicable issues specifically required in
Sections 500 through
552 of these rules including, but
not limited to, hydraulic capacity, treatment capacity, standby power,
redundancy, fire flows, project financing, and operation and maintenance
considerations sufficiently to determine the effects of the project on the
overall infrastructure. Facility plans must address the entire potential
service area of the project. Facility plans may not be required for simple
water main extension projects as detailed in Subsections
502.01.a. and 502.01.b.
(3-24-22)
a. Department-reviewed simple water
main extension projects. A facility plan is not required if the Department is
provided documentation supporting the ability of the purveyor to provide
service for the simple water main extension without adding system components
designed to control quantity or pressure to the system and while continuing to
provide the pressure and quantity requirements of Subsection
552.01. Documentation may be in
the form of: (3-24-22)
i. Hydraulic modeling;
(3-24-22)
ii. Usage data and flow
calculations; (3-24-22)
iii.
Declining balance reports that demonstrate the system has the capacity to
supply the service area of the system served by the extension; or
(3-24-22)
iv. Other documentation
acceptable to the Department. (3-24-22)
b. Qualified Licensed Professional Engineer
(QLPE)-reviewed Simple Water Main Extension Projects. A Department-approved
facility plan is not required to be in place prior to the QLPE approving a
simple water main extension pursuant to Subsection
504.03.b., provided that the
service area of the system served by the extension is in compliance with the
facility and design standards in Sections
500 through
552 of these rules. If the
Department has not approved a facility plan for the system which includes the
proposed simple water main extension, then the system purveyor or the QLPE
shall provide with the transmittal letter documentation supporting the ability
of the purveyor to provide service for the simple water main extension without
adding system components designed to control quantity or pressure to the system
and while continuing to provide the pressure and quantity requirements of
Subsection 552.01. The purveyor shall
provide this documentation to the QLPE as necessary. Documentation may be in
the form of: (3-24-22)
i. Hydraulic modeling;
(3-24-22)
ii. Usage data and flow
calculations; (3-24-22)
iii.
Declining balance reports that demonstrate the system has the capacity to
supply the service area of the system served by the extension; or
(3-24-22)
iv. Other documentation
acceptable to the Department. (3-24-22)
02.
Submittal to the Department.
When required, facility plans shall be submitted to the Department for review
and approval prior to the submission of plans and specifications for a project
related to the facility plan. (3-24-22)
03.
Engineer's Seal Required.
Facility plans submitted to the Department shall bear the imprint of an Idaho
licensed professional engineer's seal that is both signed and dated by the
engineer. (3-24-22)
04.
Facility Plan Contents. The facility plan shall include basic
information, criteria and assumptions, and alternative solutions with
preliminary layouts and cost estimates as applicable. The facility plan is
intended to address system wide growth, to identify system deficiencies, and to
lay out a plan for system upgrades and expansion. (3-24-22)
a. New public water system facility plan. The
minimum requirements for a facility plan for a new public water system are
listed in Subsections
502.04.a.i. through
502.04.a.viii. If specific items listed in Subsections
502.04.a.i. through
502.04.a.viii. are not applicable to a particular system, then the submitting
engineer shall state this in the facility plan and state the reason why the
requirement is not applicable. The facility plan must also include sufficient
detail to support applicable requirements of Sections
501 through
552. (3-24-22)
i. Location. A general description and
location of the system. (3-24-22)
ii. Population. The estimated design
population of the system including the number of connections and the number of
EDUs proposed. (3-24-22)
iii.
Sources of Water. Adequacy, quality, and availability of sources of water for
potable use and a description of the non-potable irrigation system.
(3-24-22)
iv. Treatment. Identify
and describe any anticipated treatment. (3-24-22)
v. Water Quantity. Design data for domestic,
irrigation, fire fighting, commercial, or industrial water uses, including peak
hour, maximum day, and average day demands. (3-24-22)
vi. Storage. Include the size and location of
any anticipated storage structures. (3-24-22)
vii. Operating Pressure. Pressure ranges for
all flow conditions prescribed by these rules. (3-24-22) viii. Sewage. Describe
the sewage collection system and sewage treatment works, with reference to
their relationship to existing or proposed water works structures which may
affect the operation of the water supply system, or which may affect the
quality of the supply. (3-24-22)
b. Existing public water system facility
plan. The minimum requirements for a facility plan for an existing public water
system must include Subsections
502.04.b.i. through
502.04.b.vii. as well as Subsections
502.04.a.i. through
502.04.a.viii. If specific items listed in Subsections
502.04.b.i. through
502.04.b.vii. or Subsections
502.04.a.i. through
502.04.a.viii. are not applicable to a particular facility plan, then the
submitting engineer shall state this in the facility plan and state the reason
why the requirement is not applicable. The facility plan must also include
sufficient detail to support applicable requirements of Sections
501 through
552. (3-24-22)
i. Hydraulic analysis. A computer analysis of
the hydraulics of the distribution system if requested by the Department; any
analysis of an existing distribution system shall be properly calibrated. The
type or sophistication of analysis shall be dependent on the type of system.
(3-24-22)
ii. Identify and evaluate
problems related to the drinking water system. (3-24-22)
iii. Describe financing methods.
(3-24-22)
iv. Set forth anticipated
charges for users. (3-24-22)
v.
Review organizational and staffing requirements. (3-24-22)
vi. Offer a project(s) recommendation for
client consideration. (3-24-22)
vii. Outline official actions and procedures
to implement the project. (3-24-22)
c.
Public Water System Facility Plan
funded by the State Revolving Fund. If the project is funded by the
state revolving fund or a state grant, the facility plan must meet the
requirements of Subsections
502.04.a. and 502.04.b., and
other requirements that may also apply. See IDAPA 58.01.20, "Rules for
Administration of Drinking Water Loan Program," and IDAPA 58.01.22, "Rules for
Administration of Planning Grants for Public Drinking Water Facilities."
(3-24-22)
d. Facility Plan
Guidance. A checklist, which can be used as guidance, can be found on the DEQ
website at
http://www.deq.idaho.gov. The guidance
document is for Department grant and loan projects, but may be used in part or
in whole as a guide to assist in the development of any facility plan.
(3-24-22)
