4.3. Plan Review and Permitting.
Plans and specifications for the construction, alteration,
extension, or change of use for any graywater system shall be submitted to the
regulatory authority. The regulatory authority shall review said plans and
specifications as to their adequacy of design for the intended purpose, and
shall, if necessary, require such changes as are required by these rules. When
the reviewing regulatory authority is satisfied that plans and specifications
are adequate for the conditions under which a system is to be installed and
used, a construction permit shall be issued to the property owner. Construction
of any graywater system may not commence until the regulatory authority has
issued a construction permit.
(a)
System Designer Qualifications.
Graywater system design requirements are determined by the
complexity of the system. Systems shall be permitted by tiers.
(i) a Tier 1 System designer shall be
certified at a Level 2 as defined by R317-11.
(ii) a Tier 2 System designer shall be
certified at a Level 3 as defined by R317-11.
(b) Information Required.
Plans submitted for review shall be drawn to scale, 1" = 10',
20' or 30', or other scale as approved by the regulatory authority. Plans shall
be prepared in such a manner that the contractor can read and follow them in
order to install the system properly. Depending on the individual site and
circumstances, or as determined by the regulatory authority, required
information may include:
(i) applicant
information consisting of:
(A) the name,
current address, and telephone number of the applicant;
(B) complete address, legal description of
the property, or both to be served by the graywater system.
(ii) a graywater irrigation system
site plan consisting of:
(A) submittal date
of plan;
(B) North arrow;
(C) lot size and dimensions;
(D) ground surface contours, preferably at 2
foot intervals, of both the original and proposed final grades of the property,
or relative elevations using an established bench mark;
(E) maximum number of bedrooms, including
statement of whether a finished or unfinished basement will be provided, the
number of fixtures proposed to be connected to graywater system, or if other
than a single family dwelling, the number of occupants expected and the
estimated gallons of wastewater generated per day;
(F) location and dimensions of paved and
unpaved driveways, roadways and parking areas;
(G) proposed location and dimensions of the
essential components of the graywater system;
(H) location of all soil exploration pits and
all percolation test holes;
(I)
location of any present or proposed retaining walls, drainage channels, or
buildings;
(J) location of building
sewer and water service line to serve the building;
(K) location of easements or drainage
right-of-ways affecting the property;
(L) location of all intermittent or
year-round streams, ditches, watercourses, ponds, subsurface drains, etc.
within 100 feet of proposed graywater system;
(M) location, type, and depth of all existing
and proposed non-public water supply sources within 200 feet of the graywater
system, and of all existing or proposed public water supply sources within 1500
feet of the graywater system and associated source protection zones;
(N) distance to nearest public water main and
size of main;
(O) distance to
nearest public sewer, size of sewer, and whether accessible by
gravity;
(P) location of any onsite
wastewater system, any replacement area, and location of the proposed graywater
system;
(iii) a
statement with the site plan indicating the source of culinary water supply,
whether a well, spring, non-public or public system, and its location and
distance from any graywater systems within 200 feet. The regulatory authority
may not approve a graywater irrigation system if:
(A) the applicant has a private culinary
system; and
(B) lacks a water right
with use type designated for irrigation by the Utah Division of Water
Rights.
(iv) relative
elevations, using an established bench mark, including:
(A) building drain outlet;
(B) the outlet of any graywater system
components;
(C) the final ground
surface over the graywater system.
(v) Details for the graywater system design
site, plans, and specifications as listed in Section
R317-401-5,
including:
(A) schedule or grade, material,
diameter, and minimum slope of graywater sewer and distribution
pipes;
(B) surge tank capacity,
design, cross sections, etc., materials, and dimensions, if applicable. If tank
is commercially manufactured, the name and address of manufacturer shall be
provided;
(C) subsurface graywater
discharge system details, including:
(1)
details of mulch shields and mulch shield basins, if provided;
(2) description and details for method of
graywater dispersal, whether aggregate or chambers;
(3) length, slope, and spacing of each
absorption system component;
(4)
maximum slope across ground surface of absorption system area;
(5) distance of graywater discharge system
from trees, cut banks, fills, or subsurface drains;
(6) cross section of graywater discharge
system showing the:
(I) depth and width of
graywater discharge system excavation;
(II) depth of distribution pipe;
(III) depth of aggregate;
(IV) barrier material, i.e. synthetic filter
fabric, straw, etc., used to separate aggregate from cover; and
(V) depth of cover; and
(7) other pertinent information.
