Current through Bulletin 2024-18, September 15, 2024
(1)
Definition.
A surface water source, as is defined in Rule R309-110, shall
include tributary systems, drainage basins, natural lakes, artificial
reservoirs, impoundments, and springs or wells that have been classified as
being directly influenced by surface water. Surface water sources will not be
considered for culinary use unless they can be made acceptable by conventional
surface water treatment or other equivalent treatment techniques acceptable to
the Director.
(2)
Pre-design Submittal.
The following information must be submitted to the Director
and approved in writing before commencement of design of diversion structures
or water treatment facilities:
(a) a
copy of the chemical analyses required by Rule R309-200 and described in
Subsection R309-515-4(5); and
(b) a
survey of the watershed tributary to the watercourse along which diversion
structures are proposed. The survey shall include:
(i) determining possible future uses of
impoundments or reservoirs;
(ii)
the present stream classification by the Division of Water Quality, any
obstacles to having a stream reclassified 1C, and determining degree of
watershed control by owner or other agencies;
(iii) assessing degree of hazard to the
supply by accidental spillage of materials that may be toxic, harmful or
detrimental to treatment processes;
(iv) obtaining samples over a sufficient
period to assess the microbiological, physical, chemical and radiological
characteristics and variations of the water;
(v) assessing the capability of the proposed
treatment process to reduce contaminants to applicable standards; and
(vi) consideration of currents, wind and ice
conditions, and the effect of tributary streams at their confluence.
(3) Pre-construction
Submittal.
Following approval of a surface water source, the following
additional information must be submitted for review and approval before
starting construction:
(a) acceptable
evidence that the water system has a legal right to divert water for the
proposed uses from the proposed sources;
(b) minimum quantity that the surface water
source can produce, see Subsection R309-515-5(4)(a); and
(c) complete plans and specifications and
supporting documentation for the proposed treatment facilities to ascertain
compliance with Rules R309-525 or R309-530.
(4) Quantity.
The quantity of water from surface sources shall:
(a) be assumed to be no greater than the low
flow of a 25-year recurrence interval or the low flow of record for these
sources when 25 years of records are not available;
(b) meet or exceed the anticipated peak day
demand for water as estimated in Section R309-510-7 and provide a reasonable
surplus for anticipated growth; and
(c) be enough to compensate for losses such
as silting, evaporation, seepage, and sludge disposal, which would be
anticipated in the normal operation of the treatment facility.
(5) Diversion Structures.
Design of intake structures shall provide for:
(a) withdrawal of water from more than one
level if quality varies with depth;
(b) intake of the lowest withdrawal elevation
located at sufficient depth to be kept submerged at the low water elevation of
the reservoir;
(c) separate
facilities for release of less desirable water held in storage;
(d) occasional cleaning of the inlet
line;
(e) a diversion device
capable of keeping large quantities of fish or debris from entering an intake
structure; and
(f) suitable
protection of pumps where used to transfer diverted water.
(6) Impoundments.
The design of an impoundment reservoir shall provide for,
where applicable:
(a) removal of brush
and trees to the high water level;
(b) protection from floods during
construction;
(c) abandonment of
every well, which may be inundated, refer to applicable requirements of the
Division of Water Rights; and
(d)
adequate precautions to limit nutrient loads.
