a. Major
Wastewater Collection System Projects. Items applicable to preliminary
engineering reports for major wastewater collection system projects are listed
in Subsections 411.03.a.i. through
411.03.a.vi. (3-31-22)
i. Coordination with
Facility Plan. The preliminary engineering report shall discuss or reference
items provided in the Department-approved facility plan. These items include,
but are not limited to: (3-31-22)
(1) Location
of project; (3-31-22)
(2)
Population served by project; (3-31-22)
(3) Existing and proposed wastewater flows;
(3-31-22)
(4) Existing and proposed
collection system; (3-31-22)
(5)
Existing and proposed treatment works; (3-31-22)
(6) Existing and proposed disposal methods;
(3-31-22)
(7) Drinking water system
impacts; (3-31-22)
(8) Hydraulic
analysis; and (3-31-22)
(9)
Financing methods. (3-31-22)
ii. Design criteria. The preliminary
engineering report shall discuss and present the design criteria applicable to
the proposed project. The design criteria includes, but is not limited to:
(3-31-22)
(1) Wastewater flow rates including
peak hour flows; (3-31-22)
(2)
Current project fifty (50) year design and build-out conditions;
(3-31-22)
(3) Piping size,
material, and installation methods; (3-31-22)
(4) Depth of bury and slope;
(3-31-22)
(5) Soil and ground water
conditions; (3-31-22)
(6) Corrosion
protection; and (3-31-22)
(7) Odor
control. (3-31-22)
iii.
Code provisions. The preliminary engineering report shall include a summary of
applicable codes and standards that apply to the proposed project.
(3-31-22)
iv. Cost estimate. The
preliminary engineering report shall provide as applicable estimated
construction costs for public works projects or projects funded by public
monies. (3-31-22)
v. Construction
schedule. The preliminary engineering report shall include the proposed
construction schedule. (3-31-22)
vi. Environmental review. The preliminary
engineering report shall include an environmental review. See the definition
for environmental review in Section
010 for additional information.
(3-31-22)
b. Wastewater
Pump Station Projects. Items applicable to preliminary engineering reports for
wastewater pump station projects include all items listed in Subsection
411.03.a. and items listed in
Subsections 411.03.b.i. through
411.03.b.iv. (3-31-22)
i. Design criteria. The
preliminary engineering report shall discuss and present the design criteria
applicable to the proposed project. The design criteria includes, but is not
limited to: (3-31-22)
(1) Wastewater flow
rates including average day, maximum day, and peak hour flows;
(3-31-22)
(2) Influent wastewater
characteristics, including characteristics during periods of wet weather flows;
(3-31-22)
(3) Size and
configuration; and (3-31-22)
(4)
Redundancy provisions. (3-31-22)
ii. Site evaluation and layout. The
preliminary engineering report shall describe the proposed site and layout of
the wastewater pumping station. This information includes, but is not limited
to: (3-31-22)
(1) Currently proposed
facilities; (3-31-22)
(2)
Geotechnical investigation and provisions including buoyancy calculations if
required; (3-31-22)
(3) Flood
control provisions; (3-31-22)
(4)
Security; (3-31-22)
(5) Operations
and maintenance assessments; and (3-31-22)
(6) Odor management plans.
(3-31-22)
iii.
Instrumentation and control system. The preliminary engineering report shall
discuss instrumentation and control that will be provided. This information
includes, but is not limited to: (3-31-22)
(1)
System configuration; (3-31-22)
(2)
Operator interface; (3-31-22)
(3)
Process and instrumentation diagrams; and (3-31-22)
(4) Alarm systems.
(3-31-22)
iv. Emergency
operation. The preliminary engineering report shall describe how the system
will be operated during power outages, equipment failures, or other unforeseen
system failures. (3-31-22)
c. Wastewater Treatment Plants. Items
applicable to preliminary engineering reports for wastewater treatment plant
designs and upgrades include all items listed in Subsection
411.03.a., Subsection
411.03.b., and Subsections
411.03.c.i. through
411.03.c.iv. (3-31-22)
i. Design criteria. The
preliminary engineering report shall discuss and present the design criteria
applicable to the proposed project. The design criteria includes, but is not
limited to: (3-31-22)
(1) Wastewater flow
rates including average day, maximum day, maximum month, and peak hour flows;
(3-31-22)
(2) Effluent
requirements; (3-31-22)
(3) Solids
production, disposal, or recycling requirements; (3-31-22)
(4) Process units design criteria, process
selection, and support data; (3-31-22)
(5) Mass balance calculations for process
units including, but not limited to, flow and solids; and (3-31-22)
(6) Monitoring and reporting requirements.
(3-31-22)
ii. Site
evaluation and layout. The preliminary engineering report shall describe the
proposed site and layout of the wastewater system. This information includes,
but is not limited to: (3-31-22)
(1) Currently
proposed facilities; (3-31-22)
(2)
Facilities for twenty (20) year design conditions; (3-31-22)
(3) Facilities for build-out conditions;
(3-31-22)
(4) Space for facilities
potentially necessary to meet higher levels of treatment; (3-31-22)
(5) Liquid process facilities and conveyance;
(3-31-22)
(6) Solids process
facilities and conveyance; (3-31-22)
(7) Plant access and on-site roads and
walkways; (3-31-22)
(8) Process
piping and utilities; (3-31-22)
(9)
Buffer zones; (3-31-22)
(10)
Landscaping; (3-31-22)
(11)
Administration and operations buildings; (3-31-22)
(12) Onsite laboratory facilities; and
(3-31-22)
(13) Treatment during
construction. (3-31-22)
iii. Hydraulic profile. The preliminary
engineering report shall provide a hydraulic profile for the proposed system.
This information includes, but is not limited to: (3-31-22)
(1) Twenty (20) year design facilities;
(3-31-22)
(2) Provision for higher
levels of treatment; (3-31-22)
(3)
Receiving stream one hundred (100) year surface water elevation; and
(3-31-22)
(4) Hydraulics and pipe
sizing for build-out conditions. (3-31-22)
iv. Process units. The preliminary
engineering report shall describe in detail the proposed process units and
discuss how the proposed units will interface with any existing process units.
This information includes, but is not limited to: (3-31-22)
(1) Current project and twenty (20) year
design and build-out conditions; (3-31-22)
(2) Size and number of units and loading
rates; (3-31-22)
(3) Redundancy
provisions; (3-31-22)
(4) Equipment
type, size, performance criteria, and power requirements; (3-31-22)
(5) Structure, equipment, and piping layout;
(3-31-22)
(6) Special code
requirements; (3-31-22)
(7) Cold
temperature operation; and (3-31-22)
(8) Procedures required for initial start-up
of process unit(s), including procedures required for handling initial system
flows that are less than minimum flow requirements for the process unit(s).
(3-31-22)
