[Zoning Order §16.580, 4-2-2008]
All required subdivision and site development improvements shall be subject to inspection and approval by Jefferson County, with the exception of improvements that will be inspected and accepted by other utility providers. Any installed improvements that do not meet the standards established by this UDO must be removed, replaced or repaired to conform with said standards prior to the acceptance of improvements by applicable agency.
[Zoning Order §16.590, 4-2-2008]
A. 
A letter of completion for required improvements will be issued, provided the following requirements are fully met:
1. 
A letter of credit covering defects and workmanship is provided to the County for ten percent (10%) of the construction cost for the following items: grading, streets, stormwater collection and detention systems, sanitary sewer and water systems when ownership and maintenance is the responsibility of the homeowners' association. The letter of credit shall be in effect for a period of one (1) year;
2. 
Certification by a professional engineer licensed in the State of Missouri stating that installation of all improvements substantially conforms to the approved improvement plans/site development plan. In lieu of the certification, the following shall be required for the County to accept the completion of improvements:
a. 
Pre- and post-construction geotechnical study in accordance with Article VII;
b. 
Data demonstrating street installations and other required improvements in accordance with Section 400.5660.
[Zoning Order §16.595, 4-2-2008]
A. 
Whether the subdivider/developer has completed all the improvements prior to recording of the final plat or has entered into a guarantee agreement and provided security therefore, in order to gain permission to record the final plat, to obtain a release of all or a portion of the security, the subdivider/developer must comply with the following requirements.
1. 
Streets.
a. 
Provide data of a type and form from a professional acceptable to the Planning Division that the subgrade has been properly prepared to meet the standards established by these regulations.
b. 
Provide data of a type and form from a professional acceptable to the Planning Division that the pavement meets the standards contained in this UDO.
c. 
Provide a registered professional engineer's certification that the streets have been built in accordance with the UDO and consistent with the approved improvement plans. In lieu of providing an engineer's certification, the subdivider/developer may have a testing laboratory that is acceptable to the Planning Division perform post-construction coring to measure the thickness and compressive strength of the pavement areas as follows:
(1) 
Concrete pavements.
(a) 
One (1) core sample shall be taken in the approximate center of each intersection. Two (2) core samples (one (1) in each traffic lane) shall be taken between the intersections in locations to be designated by the Jefferson County Public Works Department. In the case of a cul-de-sac or a street without intersections, core samples will be taken in each traffic lane at the beginning and the end of the street and in between in each traffic lane at intervals that do not exceed five hundred (500) feet apart, the exact location of which shall be designated by the Jefferson County Public Works Department.
(b) 
When the measurement of any core is deficient in excess of three-tenths (0.3) inch from the planned thickness, additional cores will be taken in each traffic lane at twenty (20) foot intervals parallel to the centerline ahead and in back of the affected location until the extent of the deficiency has been determined.
(c) 
Pavement that is deficient by three-tenths (0.3) inch or less will be accepted. If any core measurement of thickness is deficient by more than three-tenths (0.3) inches, the subdivider/developer will have the option of removing and replacing the pavement or leaving the pavement in place and making a cash deposit into a special escrow account to be established by the County Council in accordance with the following schedule:
Deficiency in Thickness
Amount to be Paid into Special Escrow (percent of unit value in Jefferson County Schedule of Unit Prices)
0.31 — 0.5 inches
50%
0.51 inches and above
Replace
The above calculations will be applied to a Section of pavement twenty (20) feet in length and extending from the edge of the pavement to a longitudinal joint or between longitudinal joints in that section of pavement in which the deficient measurement was found.
(2) 
Asphalt pavement.
(a) 
Cores shall be taken at the same intervals and frequency as required for concrete pavement as provided above in Subsection (1)(c)(1)(a).
(b) 
When the measurement of any core is deficient in excess of two hundred forty-nine thousandths (0.249) inch from the approved thickness, additional cores will be taken in each traffic lane at twenty (20) foot intervals parallel to the centerline ahead and in back of the effected location until the extent of the deficiency has been determined.
(c) 
If any core measurement of thickness is deficient by more than two hundred forty-nine thousandths (0.249) inch from the planned thickness, the contractor, at its expense, will have the option of removing and replacing the deficient pavement or providing a minimum one and one-half (1.5) clean tack coated surface overlay to achieve or exceed the designed thickness. The pavement shall be removed or overlaid for the full width of the road to the extent of the deficiency along the longitudinal axis of the road. In the alternative, the pavement may be left in place and the developer shall make a cash deposit into a special escrow account to be established by the County Council in accordance with the following schedule:
Deficiency in Thickness
Amount to be paid into special escrow (percent of unit value in Jefferson County Schedule of Unit Prices)
0.25 — 0.39 inches
50%
0.4 — 0.6 inches
100% or remove and replace or overlay. (Choice to remove and replace or overlay shall be at the discretion of the County.)
0.61 inches and above
Replace
The above calculations will be computed at the rate per square yard of pavement used in determining the amount of the developer's escrow deposit. Amount to be paid into special escrow will be assessed based on one hundred (100) foot minimum intervals.
(d) 
At such time as control of the homeowners' association is assumed by the property owners and upon receipt of a written request from the association, the County Council shall pay the funds it has held in the special escrow to the homeowners' association or to such organization as the association may designate.
(e) 
Holes from the core samples shall be filled with non-shrink grout.
2. 
Stormwater system.
a. 
Provide an engineer's certification that the storm sewers have been installed in accordance with the approved improvement plans.
b. 
In lieu of an engineer's certification, provide as-built drawings from a professional acceptable to the Planning Division that illustrate the location of the stormwater system relative to established easements and the location and elevations of stormwater structures.
3. 
Sanitary sewers and water lines.
a. 
Provide an engineer's certification that sanitary sewers and water lines have been installed in accordance with the approved improvement plans.
b. 
In lieu of an engineer's certification, provide as-built drawings from a professional acceptable to the Planning Division that illustrate the location of the sanitary sewer and water system relative to established easements and the location and elevations of structures.
c. 
For developments where a private or public sewer or water district will be maintaining and taking ownership of the system, provide an acceptance/approval letter from such district.
4. 
Miscellaneous improvements. Completion of all other improvements, including entrance monuments, street signs, sidewalks, common ground improvements, fencing, landscaping, etc., shall be determined by visual inspection by Jefferson County personnel.
[Zoning Order §16.600, 4-2-2008]
A. 
Where improvement plans or site development plans provide for installation of improvements that require maintenance, supervision or operation and the ownership is not transferred to a municipal corporation, a private agency or a utility, the deed of restrictions or covenants for the development shall make provisions for a continuing legal body (property/homeowners' association) with authority to set and collect reasonable charges.
B. 
Maintenance and supervision requirements for one- and two-family residential subdivisions are found in Section 400.5680(6).
[Zoning Order §16.610, 4-2-2008]
A. 
Subdividers shall form or cause to have formed a property owners' association in accordance with the following standards.
1. 
Recordation. The association shall be established in recorded subdivision restrictions before any lot within the subdivision is sold.
2. 
Membership. Membership in the property owners' association shall be mandatory for each owner of real property within the subdivision.
3. 
Responsibilities. Common open space, subdivision entrance structures, stormwater system or recreational ground that is reflected on a final plat, must be owned and maintained by the property owners' association. If the property owners' association proposes to change the area of common ground, approval must be granted by the County. The property owners' association shall be responsible for payment of property taxes, if any, on and maintenance of all common open space areas and facilities, maintenance of liability insurance and other related duties of ownership.
4. 
Establishment of property owners' association. The subdivider shall file a declaration of restrictions and a declaration of property owners' association with the final plat when approval is sought, setting forth the above condition and other features of the property owners' association. The subdivider shall supply to the Planning Division a copy of the articles of incorporation or articles of organization and a complete set of the bylaws of the property owners' association. The declaration of restrictions and declaration of property owners' association shall, at a minimum, regulate the following:
a. 
Property maintenance;
b. 
Maintenance of common facilities;
c. 
Trash removal.
5. 
Transfer of control of the association.
a. 
Developer shall orderly transfer control of the association no later than ninety (90) days after the sale of ninety-five percent (95%) of the units/lots in the development where there is a professional management company for the development or eighty percent (80%) of the units/lots in the development where there is not a professional management company, whichever is earlier; provided however, the developer may transfer control of the association at an earlier date.
b. 
Before the deadline, the developer shall send out notice to hold a meeting of all property owners to elect a board. The notice shall be sent out announcing the time, place and purpose of the meeting, at least fifteen (15) days in advance. Once the board is elected, the developer shall officially transfer the control of the property owners' association to the board at the meeting. The records and monies shall be transferred over, though not necessarily at the meeting itself, no later than ninety (90) days after the meeting.
6. 
Where subdivision improvement plans provide for installation of improvements, including sewer lines, sewage treatment plants, water supply systems, streets or other physical facilities that require maintenance, supervision or operation and the maintenance of those facilities is not transferred to a private agency or a utility, the declarations and restrictions shall make provision for a property owners' association with authority to:
a. 
Make charges on a continuing basis for the upkeep, maintenance and operation of the improvements; and
b. 
Set reasonable charges thereof, with a minimum of three hundred dollars ($300.00) annually per lot.
c. 
Where the proposed subdivision relies upon utilization of a private access located outside the proposed subdivision, the maintenance fee shall also provide for a contribution to an existing Board of Trustees equal to the proportional use of the access based on the number of housing units served.
7. 
The declaration of restrictions and declaration of property owners' association shall be recorded along with the final plat.
8. 
A copy of the recorded set of covenants and restrictions for the development must be submitted to the Planning Division prior to the issuance of a building permit.
9. 
If a subdivision plat includes construction of a landscaped decorative entryway, islands, statuary or other aesthetically oriented theme or identity amenities that are to be located within a dedicated right-of-way, the property owners' association shall be specifically charged with the responsibility for perpetual maintenance of such areas. This shall not apply to landscaping within the median strip of County or State-maintained streets.
10. 
In the event a property owners' association established to own or maintain common open space or any successor association shall, at any time after development of a residential subdivision, fail to maintain the common open space in reasonable order and condition, the Director may serve written notice upon such association setting forth the manner in which the association has failed to maintain the common open space and said notice shall include a demand that such deficiencies of maintenance be corrected within thirty (30) days thereof and shall state the date and place of a public hearing before the County Council which shall be held within fourteen (14) days of said notice. At such public hearing, the County Council may modify the terms of the original notice as to the deficiencies and may give an extension of time within which they shall be corrected. If the deficiencies set forth in the original notice or in the deviation thereof are not corrected within said thirty (30) days or any extension thereof, the County Council, in order to preserve the taxable values of properties within the residential subdivision and to prevent the common open space from becoming a public nuisance, may authorize appropriate County employees to enter upon said common open space and maintain the same for a period of one (1) year. Said entry and maintenance shall not vest in the public any rights to use the common open space.
11. 
Before expiration of said year, the County Council shall, upon its own initiative or upon request of the property owners' association therefore responsible for maintenance of the common open space, call a public hearing upon notice to such association or to residents of the residential subdivision, at which public hearing the County Council shall decide whether or not such maintenance by the County should continue for a succeeding year. If the County Council shall determine that such association is not ready and able to maintain the common open space in reasonable condition and order, the County Council may, in its discretion, continue to maintain the common open space during the succeeding year and, subject to a similar public hearing and determination, in each year thereafter.