The purpose of this Chapter is to give a general view of the
working relationship between the developer and the local government
concerning the specifications listed in this manual. This chapter
also explains some of the terminology used throughout this manual
and lists the references herein.
These specifications are established under the authority of
the Henderson City-County Planning Commission for the use of all persons,
firms, or corporations constructing improvements which are or may
become public facilities under the jurisdiction of the City and County
of Henderson. Whenever, in these specifications, the term developer
is used, it shall refer to the person, firm or corporation installing
the work, and includes contractors, subcontractors, agents, and any
other person or entity installing or constructing public improvements.
Whenever, in these specifications, the term Engineer is used,
it shall refer to Engineers employed by the City of Henderson, Henderson
County, a Local Utility Engineer, or any other duly authorized representative
having jurisdiction over the work to be performed, including inspectors
employed by local government or a public utility.
The term HWU in these specifications refers to the Henderson
Water Utility.
Certain technical aspects concerning construction materials
and methods of construction are based on the Kentucky Transportation
Cabinet, Standard Specifications for Road and Bridge Construction,
current edition, hereafter referred to as the KYTC Specifications.
A copy of said specifications is available for reference in the office
of the Henderson City Engineer.
Other standards or specifications referred to are those of the
American Society of Testing Materials (ASTM), American Association
of State Highway and Transportation Officials (AASHTO), the American
National Standards Institute (ANSI) and the American Waterworks Association
(AWWA).
Standard drawings showing details of certain improvements which
may be issued by the various Engineers shall be complementary to and
a part of these specifications.
The Engineer shall decide on all questions which may arise as
to the interpretation of the specifications or plans relating to the
work, and all questions as to the acceptable fulfillment of the work
performed by the developer. The Engineer shall decide any and all
questions which may arise as to the quality and acceptability of materials
furnished and work performed and as to the manner of performance of
the work.
The developer shall perform and complete the work to the satisfaction
of the Engineer and in accordance with these specifications. The developer
shall conduct his work so as to minimize interference with public
and private business and traffic, and shall, at his own expense, whenever
necessary or required, provide barricades, flagmen, maintain lights,
and take other precautions as may be necessary to protect life, property,
adjacent buildings, and structures. The developer shall be liable
for all damages and injuries received or sustained by any person,
persons or property in consequence of any neglect or misconduct by
him or his agents, subcontractors, employees, or workmen.
For use during construction of improvements, two (2) complete
sets of prints of all improvement plans shall be furnished to the
office of the Engineer. These plans shall have received preliminary
approval by the Henderson City-County Planning Commission, when appropriate.
All plans for potable water lines, sanitary sewers, and storm sewers
shall be certified by a Licensed Professional Engineer registered
in the State of Kentucky. In addition, copies of all design calculations
in connection with sanitary and storm drainage facilities shall be
furnished to the Engineer and to the Planning Commission. The Engineer
may at his discretion require submittal of suitable electronic copies
of plans in a standard format (e.g., AutoCAD).
GPS coordinates in an appropriate datum specified by the City
or County shall be collected and submitted to the Engineer for all
utility improvements, including sanitary, water and stormwater, and
other utilities when required. Coordination of this activity with
local government and utility staff shall be the responsibility of
the developer, and the developer may be required to uncover any facilities
not so recorded. Utility connections (laterals and services) shall
be included in this location information. One (1) copy of this information
shall be furnished to the Engineer.
Plans shall be complete, and shall show all information necessary
to allow construction of the improvements to the requirements of these
specifications. Plans shall be drawn to a scale, and shall include
all construction notes, topographic details, elevations, property
lines, proposed improvements and other information as required by
the Engineer.
Cooperation with the Engineer concerning construction planning
and procedures is required. Reasonable notice shall be given the Engineer
or his representative prior to beginning any phase of construction,
normally 24 hours prior to work activity. In emergencies notice may
be given not less than 4 hours in advance of work. In instances where
the developer fails to request inspections prior to or during performance
of the work, the Engineer may require cores, samples, destructive
testing or other measures to insure that work performed meets the
requirements of these specifications, and all such additional tests
or procedures and costs of removing, replacing or repairing items
so tested shall be at the sole expense of the developer.
All improvements must conform to the adopted Public Improvement
Specifications and be satisfactory to the Engineer. Materials not
in accordance with the specifications or defective work may be rejected
by the Engineer at any time before final approval and acceptance by
the Engineer. Failure by the Engineer to reject defective work shall
not be construed as acceptance of same. Defective work shall be removed
and replaced at the developer's sole expense.
All improvements must be inspected by the Engineer or his representative.
The Developer may be required to uncover, test and/or remove work
that was not inspected prior to backfill.
In addition to normal inspection which may be conducted during
construction of development improvements, a final inspection will
be made by the Engineer or his representative, prior to acceptance
of any part of the work for maintenance by the local government. As
part of the final inspection, all sanitary and storm manholes shall
be opened. All sanitary and storm drain facilities shall be cleaned
of all dirt, mud, and other foreign matter. The developer shall provide
personnel as required to aid in the final inspection.
CCTV inspection of Sanitary and Storm Sewers in the HWU service
areas shall consist of televising 10% of the main pipelines and 25%
of the sanitary laterals, and a fee is computed and assessed at the
time of approval of the plans. Should CCTV inspection reveal the failure
of any portion of the system to meet the requirements of the applicable
Technical Standards, HWU reserves the right to televise any additional
portions up to and including the entire system in which a failure
was identified at the developer's expense.
Special precautions shall be taken by the Developer to avoid
damage to existing overhead and underground utilities owned and operated
by the City or by public or private utility companies.
Where existing utilities or appurtenant structures, whether
underground or aboveground are encountered, they shall not be displaced
or disturbed unless necessary, and in such cases shall be replaced
in as good or better condition than found as quickly as possible.
The developer shall bear the entire responsibility for locating,
avoiding or repairing damage to said existing utilities. No work shall
be performed prior to contacting Kentucky 811 and existing underground
utilities being located and marked. Developer is responsible for contacting
utilities that do not subscribe to Kentucky 811.
In accordance with KRS 367.4901 through .4917, Developers are
responsible for notification of utility companies prior to the commencement
of work. All underground facilities installed after January 1, 2013,
shall include a means to accurately identify and locate the underground
facilities from the surface. This does not apply to the repair of
existing facilities.
Unless otherwise required by the agencies involved, the developer
shall make application for, obtain and pay for all licenses, permits,
easements, and rights-of-way. The developer shall be required to comply
with all State and local ordinances, laws, and codes which may apply
to the work.
Material and soil testing shall be performed by the Developer
under the direction of the engineer or street inspector. When an independent
laboratory test is requested by the Engineer or the developer, such
testing shall be paid in full by the party requesting the additional
testing.
Developer shall control water pollution through use of best
management practices that limit eroded sediment leaving the site,
and shall coordinate these measures with the construction schedule
to ensure effective and continuous erosion control throughout the
construction and post construction periods.
Before any disturbance is made, perform an initial site inspection
with the Engineer, record what areas are to be disturbed, submit an
erosion and sediment control plan showing what BMPs will be used,
design BMPs according to good engineering practices, and install the
designated BMPs. Before opening or affecting any new areas, repeat
this process and ensure all BMPs are installed before starting work.
For sites containing more than one (1) acre of disturbed area,
a Notice of Intent (NOI) must be filed with the Kentucky Division
of Water. The complete NOI submittal shall be copied to the Engineer,
for local review and permitting, and this review and permitting is
separate and apart from State approval of any plan.
1.13.1.
DESIGN REQUIREMENTS. Grading, erosion control practices, sediment
control practices, and waterway crossings shall meet the design criteria
set forth in the most recent version of the applicable Technical Stormwater
Manual, and shall be adequate to prevent transportation of sediment
from the site. Design requirements include:
a.
Cut and fill slopes shall be no greater than 2:1 (horizontal: vertical),
except as approved by the Engineer to meet other community or environmental
objectives.
b.
Clearing and grading of natural resources, such as forests and wetlands,
shall not be permitted, except when in compliance with State and Federal
regulations. Clearing techniques shall retain natural vegetation and
drainage patterns to the maximum extent practicable, as described
in the Technical Stormwater Manual.
c.
Clearing, except that necessary to establish sediment control devices,
shall not begin until all sediment control devices have been installed
and stabilized.
d.
Phasing is encouraged on all sites, with the size of each phase to
be established at plan review and as approved by the Engineer.
e.
Erosion control measures shall include the following:
(i.)
Soil stabilization shall be initiated within fourteen (14) days
of clearing or inactivity in construction.
(ii.)
If seeding or another vegetative erosion control method is used,
adequate temporary erosion control may be required until permanent
cover is established.
(iii.)
Special techniques that meet the design criteria
outlined in the applicable Technical Stormwater Manual on steep slopes
or in drainage ways shall be used to ensure stabilization.
(iv.)
Soil stockpiles must be contained at the end of each workday,
with adequate measures taken to control and treat runoff.
(v.)
The entire site must be stabilized, using a heavy mulch layer
or another method that does not require germination to control erosion,
at the close of the construction season.
(vi.)
Techniques shall be employed to prevent the blowing of dust
or sediment from the site.
(vii.)
Techniques that divert upland runoff past disturbed
slopes shall be employed.
f.
Sediment control measures may be required to include, if applicable:
(i.)
Settling basins, sediment traps, or tanks and perimeter controls.
(ii.)
Settling basins that are designed in a manner that allows adaptation
to provide long term storm water quantity and quality management,
if required by the Engineer.
(iii.)
Protection for adjacent properties by the use
of a vegetated buffer strip in combination with perimeter controls.
g.
Waterway and watercourse protection requirements shall include:
(i.)
A temporary stream crossing installed and approved by the Kentucky
Division of Water if a wet watercourse will be crossed regularly during
construction.
(ii.)
Stabilization of the watercourse channel before, during, and
after in-channel work.
(iii.)
All on-site storm water conveyance channels
designed according to the criteria outlined in the applicable Technical
Stormwater Manual.
(iv.)
Stabilization adequate to prevent erosion located at the outlets
of all pipes and paved channels.
(v.)
Vegetative buffer strips may be required along watercourses,
in conformance with the applicable Flood Damage Prevention Ordinance.
j.
Stormwater Management Measures Post-Construction. Owners or operators
of any new development or redevelopment project shall design, construct
and perpetually maintain stormwater management facilities or measures
that will treat, filter, infiltrate, screen, harvest or reuse stormwater
runoff from all impervious areas to manage stormwater quality. Facilities
constructed or measures used to meet this requirement shall capture
or treat all such runoff up to and including that from an 80th percentile
storm event. The 80th percentile storm intensity and technical details
of treatment requirements in the applicable Technical Stormwater Manual.
