[R.O. 2013 App. A §42; Ord. No. 8.120 (Bill No. 421) §42, 10-9-1978; Ord. No. 8.120 (Bill No. 1089) §1, 4-20-1989]
A. 
The size, shape, and orientation of lots shall be designed to provide desirable building sites logically related to topography, natural features, streets, and adjacent land uses. Due regard shall be given to natural features such as large trees, unusual rock formations, watercourses; and sites which have historical significance, scenic views, and similar assets, the preservation of which would add attractiveness and value to the subdivision. The following minimum standards are set forth as guides to these goals:
1. 
Each proposed lot containing an area of less than three (3) acres shall front upon a street accepted by the City or improved to the standards and specifications of the City.
2. 
Lots with double frontage should be avoided, except where necessary to provide separation of the subdivision from traffic arteries, or as otherwise required by topography or similar conditions. Lots with double frontage shall meet the setback requirements for both roads.
3. 
Where additional widening strips are dedicated on existing streets, calculations of the area of a lot shall not include widening strips in determining the gross area of the lot.
4. 
The lot area shall meet the requirements of the zoning ordinance.
5. 
Residential lots shall conform to the following minimum requirements:
a. 
All lots containing an area of eight thousand (8,000) square feet but less than ten thousand (10,000) square feet shall have a minimum width at the required building line of seventy (70) feet.
b. 
All lots containing an area of ten thousand (10,000) square feet but less than fifteen thousand (15,000) square feet shall have a minimum width at the required building line of seventy-five (75) feet.
c. 
All lots containing an area of fifteen thousand (15,000) square feet but less than one-half (1/2) an acre shall have a minimum width at the required building line of eighty-five (85) feet.
d. 
All lots containing an area of one-half (1/2) an acre but less than one (1) acre shall have a minimum width at the required building line of one hundred (100) feet.
e. 
All lots containing an area of one (1) acre but less than two (2) acres shall have a minimum width at the required building line of one hundred twenty-five (125) feet.
f. 
All lots containing an area of two (2) acres but less than three (3) acres shall have a minimum width at the required building line of two hundred (200) feet.
g. 
All lots containing three (3) acres or more shall have a minimum width at the required building line of two hundred fifty (250) feet.
6. 
Minimum frontage widths shall be determined at the normal building line as stated in the zoning ordinance.
7. 
The minimum width required for a lot fronting on a circular turnaround may be measured along a line parallel to the street right-of-way, at a distance from the street right-of-way line equal to the depth of the required front yard plus ten (10) feet.
8. 
The minimum width at the right-of-way line for lots fronting on a circular turnaround shall not be less than thirty-six (36) feet.
9. 
Side lot lines shall be at right angles to straight streets and radial to curved streets, except when said radial lot lines detract from the desirability of the lot.
10. 
Corner lots for residential use shall have adequate width to permit appropriate building lines for both streets.
11. 
Where there is a question as to the suitability of a lot or lots for their intended use due to such factors as rock formation, soil conditions, steepness of terrain, flood conditions, or other adverse physical conditions, the Commission may, after adequate investigation, withhold approval of such lots until engineering studies are presented to the Commission which establishes that the method proposed to meet any such condition is adequate to avoid danger to health, life, or lot improvements.
12. 
Large lot residential development.
a. 
A large lot residential development shall be approved if the following minimum standards are met:
Large Lot Residential Development Requirements
Minimum lot area
2 acres
Minimum front building setback
40 feet
Minimum side and rear building setback
30 feet
Sidewalk easement on both sides of street
5 feet wide
Minimum roadway and drainage easement
50 feet
Minimum pavement width
26 feet
b. 
In the event an area is subdivided as a large-lot residential development and subsequently further subdivided into lots of less area than specified in the minimum large-lot residential development requirements, each minimum street and sidewalk standard required by this Code shall be met.
[R.O. 2013 App. A §43; Ord. No. 8.120 (Bill No. 421) §43, 10-9-1978; Ord. No. 8.120 (Bill No. 1222) §§3-6, 10-4-1990]
A. 
Principles. In addition to the standards of this Chapter which are appropriate to the planning of all subdivisions, the non-residential developer shall demonstrate to the satisfaction of the Commission and the City Council that the proposed non-residential subdivision is specifically adapted to the uses anticipated. Unless otherwise set forth below, the standards and procedures established elsewhere in this Chapter as applicable to all subdivisions shall apply to non-residential subdivisions as well.
B. 
Standards. Anything to the contrary appearing in this Chapter notwithstanding, the following standards and procedures shall apply to non-residential subdivisions:
1. 
Where the zoning ordinance or recorded covenants of a non-residential subdivision require off-street parking and off-street loading, a minimum road frontage of fifty (50) feet shall be required for non-residential lots of any size.
2. 
There shall be no restrictions as to the maximum block lengths in a non-residential subdivision except as deemed necessary by the Planning Commission.
3. 
The Commission may require pedestrian ways, sidewalks, and fencing in a non-residential subdivision to provide access to parks, schools, shopping areas, or similar facilities, or as otherwise necessary to insure the public safety.
4. 
The minimum radius of thirty-two (32) feet at the back of the curb shall be required at all street intersections in a non-residential subdivision.
5. 
Sidewalks shall not be required in a non-residential subdivision developed in an "M-1" or "M-2" industrial zoning district, unless required in Subsection (B)(3) above.
6. 
All streets in a non-residential subdivision shall be designed to meet at least the minimum requirements of pavement width and right-of-way width as set forth in Section 410.650 of this Chapter and Tables A, B, and C of this Chapter. The Planning Commission may permit arterial streets in a non-residential subdivision to be built in two (2) stages of two (2) lanes in each stage.
7. 
The Commission may approve dead-end streets of more than eight hundred (800) feet in a non-residential subdivision, but all such dead-end streets shall have a turnaround with a minimum diameter at the back of the curb of at least eighty-four (84) feet. Islands shall not be required in turnarounds in a non-residential subdivision.
8. 
There shall be no requirements for a non-residential subdivision to provide for rights-of-way, for the construction of underpass or overpass where a street in a non-residential subdivision crosses railroad tracks, except in the case of arterial and collector streets as defined elsewhere in this Chapter. In such cases, the construction of an underpass or overpass, the installation of electric warning signals, or other precautionary measures may be required if deemed by the Commission or the City Council to be necessary for the public safety.
9. 
Alleys may be required by the Commission in non-residential subdivisions only where other provisions have not been made for service access, such as off-street loading, unloading, and parking, which provisions are adequate for the uses proposed within the subdivision.
10. 
Survey monuments shall not be required in non-residential subdivisions except as set forth below:
a. 
A permanent survey marker, as defined elsewhere in this Chapter, shall be placed on at least two (2) corners of each intersecting street in a non-residential subdivision and at each corner of the subdivision outboundary, and said survey markers shall be placed by a land surveyor. Additional survey monuments shall not be required in the resubdivision of a lot of a recorded non-residential subdivision.
b. 
Said permanent survey monuments may be placed after all street and related utilities have been installed in the portion of the non-residential subdivision being improved.
11. 
The provisions of Section 410.780 of this Chapter, as it pertains to the underground installation of telephone and electric utilities, shall not be applicable to non-residential subdivisions.
12. 
Every reasonable effort shall be made to protect adjacent residential areas from non-residential subdivisions and very reasonable effort shall be made to protect non-residential subdivisions from residential subdivisions.
13. 
Procedures. All procedures set forth in this Chapter shall be adhered to except the following may also be required or done:
a. 
The surface conditions of the property, results of any tests made to ascertain subsurface rock, soil, and water table, and spot elevations and slope ratios sufficient to prepare a grading plan may be required by the Commission where such conditions affect rights-of-way, easements, or other public areas within the non-residential subdivision.
b. 
The non-residential developer may submit improvement plans after the preliminary plat is approved on part of the non-residential subdivision only, and the Commission and the City Council shall review said partial improvement plans submitted as set forth in Section 410.340 of this Chapter as though they were being submitted in their entirety for the complete subdivision, so that the non-residential developer may proceed with the construction and installation of the necessary improvements to a specific commercial or industrial site. The land subdivision bond or the escrow agreement guaranteeing the installation of said improvements as set forth in this Chapter shall cover only that portion of the subdivision improvements required to serve the specific commercial or industrial site, and the record plat for such a commercial or industrial site sale shall be approved by the City Council in accordance with the terms set forth in Section 410.450 of this Chapter as though the improvement plans submitted covered the entire installation of the applicable improvements.
c. 
The location of proposed property lines may be changed by the non-residential developer from time to time to accommodate the sale of specific commercial or industrial building sites within a subdivision without such change requiring a review and/or reapproval by the Commission and the City Council of the plat of the subject non-residential subdivision, provided such relocation of property lines does not require the relocation of any utility easements or street rights-of-way, that no new lots are created, that the Administrative Officer shall have approved such property line adjustments, and that a survey of the adjustments of boundaries is recorded with the Recorder of Deeds of Jefferson County.
[R.O. 2013 App. A §44; Ord. No. 8.120 (Bill No. 421) §44, 10-9-1978]
Block lengths shall not exceed one thousand five hundred (1,500) feet, except as the Commission deems necessary to secure the efficient use of land or desired features of street layout. The Commission may require pedestrian ways to provide access to parks, schools, shopping areas, or similar facilities, or where otherwise indicated to insure the public safety. In the event that a pedestrian way is required, not less than a ten-foot right-of-way shall be set aside providing for a five-foot wide and four-inch thick Portland cement pavement or other hard surface approved by the Planning Commission.
[R.O. 2013 App. A §45; Ord. No. 8.120 (Bill No. 421) §45, 10-9-1978; Ord. No. 8.120 (Bill No. 869) §§2 — 3, 4-3-1986; Ord. No. 8.120 (Bill No. 1242) §§1 — 2, 3-7-1991; Ord. No. 8.120 (Bill No. 1369) §§1 — 2, 2-18-1993; Ord. No. 8.120 (Bill No. 2206) §1, 12-21-2006]
A. 
The arrangement, character, extent, width, grade and location of all streets shall be considered in their relation to existing and proposed streets, to topographical conditions, to public convenience and safety, and in their appropriate relation to the proposed uses of the land to be served by such streets. The following standards shall apply:
1. 
Arrangement of streets shall conform as nearly as possible to the major street plan, and the developer shall make provision for the extension of arterial, collector and local streets. Except for dead-end streets, streets normally shall connect with streets already established, or provide for future connections to adjoining unsubdivided tracts, or shall be a reasonable projection of streets in the nearest subdivided tracts.
2. 
Local street intersection jogs or discontinuities with centerline offsets of less than one hundred twenty-five (125) feet shall be avoided.
3. 
Reserved strips of land which control or limit access at the terminus of streets are prohibited.
4. 
A tangent of at least one hundred (100) feet long shall be introduced between reverse curves on arterial and collector streets.
5. 
A subdivision entrance street shall intersect the arterial or collector street with an interior angle between seventy degrees (70°) and ninety degrees (90°) extending a minimum distance of one hundred (100) feet at a maximum grade of five percent (5%).
6. 
A minimum radius of twenty (20) feet at street right-of-way intersection and a minimum radius of thirty-two (32) feet at the back of the curb shall be required. Greater radii may be required at the intersection and at the back of the curb of a street with an arterial street. The Commission may permit comparable cutoffs or chords in lieu of rounded corners.
7. 
All streets intersecting on arterial or collector streets shall be directly opposite existing or other proposed streets or shall be a minimum of three hundred (300) feet distant, as measured between street centerlines.
8. 
Streets shall be constructed to standard specifications of the City of Arnold.
9. 
All stub streets in excess of two hundred fifty (250) feet in length shall be provided with a temporary turnaround.
10. 
All streets shall be designed to meet the minimum requirements set forth in Tables A, B and C which is designed to provide the maximum allowable flexibility in street construction standards, while at the same time insuring the protection of the public interest. The widths of right-of-way and pavement are allowed to vary as functions of the type of street and the corresponding intensity of use warrant. Street classifications shall be determined by the Transportation Plan, Table B, or as determined by the Planning Commission.
11. 
Any subdivision platted along an existing street shall provide additional right-of-way, as necessary, not to exceed twenty (20) feet on each side, to meet the width requirements herein set forth. When the subdivision is located on only one (1) side of an existing street or road, one-half (1/2) of the required right-of-way width shall be provided, measured from the centerline of the right-of-way as originally established.
12. 
Whenever there abuts the tract to be subdivided a dedicated or platted and recorded half-width street or alley, the other half-width of such street or alley shall be platted so that the ultimate right-of-way conforms to the minimum standards set forth in this Chapter. This Section applies only to half-streets existing at the date of this Chapter. There will be no half-width streets platted or accepted from the date of this Chapter forward.
13. 
A subdivision plat involving new or existing streets crossing railroad tracks shall provide adequate rights-of-way, including approach rights-of-way and slope easements for construction of an underpass or overpass, unless otherwise specified by the City Council.
14. 
A street on which residential lots front and which parallels but is not adjacent to a railroad right-of-way shall be at a distance from the railroad right-of-way sufficient to provide lots with a minimum depth of one hundred sixty (160) feet.
15. 
The Commission may require a street to be dedicated to public use in order to provide proper traffic circulation.
16. 
Sidewalks along local streets shall be a minimum of four (4) feet in width. Sidewalks are required along all collector and arterial streets and shall be at least five (5) feet in width. Sidewalks of a greater width may be required in commercial areas.
17. 
Block lengths shall be a minimum of four hundred (400) feet and a maximum of fifteen hundred (1,500) feet. Block widths shall be wide enough to allow two (2) tiers of lots of sufficient depth to provide an adequate building site on each lot. All dead-end streets shall be a maximum of eight hundred (800) feet in length and contain a cul-de-sac at its end, except as determined by the Planning Commission. Circular cul-de-sacs shall have a minimum radius of forty (40) feet along the outside edge of pavement. The minimum radius shall be fifty (50) feet in commercial and industrial areas. A border area of ten (10) feet shall be provided for all cul-de-sacs.
18. 
The intersection sight distance and clear sight triangles for collector and local streets depends on the design speeds of the intersecting roadways and the type of traffic control used at the intersection. American Association of State Highway and Transportation Officials (AASHTO) current edition recommended dimensions according to type of traffic control shall be used.
19. 
The pavement cross slope shall be a minimum of two-hundredths (0.02) foot per foot and a maximum of three-hundredths (0.03) foot per foot, except where a curve is superelevated. The maximum rate of superelevation shall be six-hundredths (0.06) foot per foot.
20. 
One-way streets may be permitted only if approved by the Planning Commission and the City Council.
21. 
Curbs shall be constructed to the City's standards and shall contain a gutter section to provide a two (2) foot offset from the edge of the travel lane. Curb and gutter construction shall be required in all residential zoned areas, except as allowed in large lot residential development.
22. 
Where criteria are not prescribed in City Code, street design standards must be in accordance with the AASHTO current edition. Construction standards and details shall be in conformance with St. Louis County's standards or as established by the City of Arnold.
Table A Design Controls For Vertical Curves
Design Speed (MPH)
20
30
35
40
50
Stopping Sight Distance
Minimum
150
200
240
275
350
in feet
Desirable
150
200
250
300
450
K Value for
Minimum
24
35
40
55
75
Sag Vertical Curves
Desirable
24
35
45
60
100
K Value for
Minimum
16
28
40
55
85
Crest Vertical Curves
Desirable
16
28
45
60
145
*K = L/A where L is the length of the vertical curve and A is the algebraic difference in grade.
Table B Street Specifications
Item
Arterial
Collector
Local
Residential
Non-Residential
Current ADT
Over 4,500
1,500 — 4,500
1,500 or less
1,500 or less
Design Hourly Volume
Over 1,125
-375 — 1,125
375 or less
375 or less
Pavement Width
51'
38'
26'
30'
Travel Lane Width
12'
11'
10'
11'
Parking Lane Width
10'
8'
8'
8'
Row Width
60'
50'
40'
40'
Sidewalk Width
5' each side
5' each side
4' each side
4' each side
Sidewalk Depth
4"*1
4"*1
4"*1
4"*1
Maximum Grade
6%
8%
10%
8%
Minimum Grade
1%
1%
1%
1%
Maximum Horizontal Curvature
6*
14*30'(400')
38*(150')
21*(275')
Stopping Sight Distance
275'
240'
200'
240'
Design Speed Criteria
40 mph
35 mph
30 mph
35 mph
Minimum Bridge Width
Travel Lanes + 8'*2
Travel Lanes + 4*2
Travel Lanes*2
Travel Lanes + 4*2
Bridge Design Load
HS 20-44
HS 20-44
H-15
HS 20-44
Guardrail at Bridge Ends
Required
Optional
Optional
Optional
Shoulder Width
10'
8'
3'
8'
Cut Slope-minimum ratio
4:1
3:1
2:1
2:1
Fill Slope-minimum ratio
4:1
3:1
3:1
3:1
NOTES:
*1
Non-residential sidewalks at driveway crossing shall be six (6) inches thick, residential sidewalks at driveway crossing shall be six (6) inches thick.
*2
In no case may the bridge width be less than the approach pavement width.
Table C. Alternate Typical Sections For Local Streets
Editor's Note-Table C. Alternate Typical Sections for Local Streets is included as an attachment to this Chapter.
[R.O. 2013 App. A §46; Ord. No. 8.120 (Bill No. 421) §46, 10-9-1978]
Proposed streets which are continuations of, or in general alignment with, existing named streets shall bear the names of such existing streets. The name of a proposed street which is not in alignment with an existing street shall not duplicate the name of any existing or platted street. All the names of streets proposed by the subdivider shall be approved by the Commission prior to submitting the proposed record plat for review.
[R.O. 2013 App. A §47; Ord. No. 8.120 (Bill No. 421) §47, 10-9-1978]
A. 
All proposed subdivisions shall have easements as determined by the Commission to be adequate for the installation and maintenance of utility facilities and
1. 
Storm water easements and drainage rights-of-way may be required if necessary for proper drainage within and through a subdivision.
2. 
Where a cut or fill for a street extends beyond the limits of the right-of-way, the developer shall provide a slope easement as determined by the City Engineer to be of sufficient area and limits to permit the construction and maintenance of the slope.
3. 
Whenever a stream or surface drainage course is located in an area proposed for a subdivision, the developer shall provide an easement determined by the Planning Commission to be adequate in area to contain facilities to take care of flooding or erosion along said stream or surface drainage course.
[R.O. 2013 App. A §48; Ord. No. 8.120 (Bill No. 421) §48, 10-9-1978; Ord. No. 8.120 (Bill No. 1319) §§1-2, 4-2-1992]
Survey monuments shall be provided as determined by the Missouri Department of Natural Resource's publication entitled Missouri Minimum Standards for Property Boundary Surveys, June 25, 1987. These regulations shall be acceptable, with the exception of three-fourths (3/4) inch outside diameter iron pipe marker serving as semi-permanent monumentation shall not be permitted.
[R.O. 2013 App. A §49; Ord. No. 8.120 (Bill No. 421) §49, 10-9-1978]
All streets shall be graded and the roadway improved by surfacing. Roadway surfacing shall be in accordance with standards and specifications of the City of Arnold. All grading and surfacing shall be done under observation and inspection of the City Engineer and shall be subject to his/her approval. The treatment of the intersection of any new street with a State highway shall be subject to approval by the district engineer of the State of Missouri Highway Department.
[R.O. 2013 App. A §50; Ord. No. 8.120 (Bill No. 421) §50, 10-9-1978]
At such time as a subdivision is proposed adjacent to a street that is accepted and maintained by the City of Arnold, that portion of said street adjacent to the proposed subdivision shall be improved to handle the increased traffic due to said subdivision, and the additional right-of-way and the cost of improvement of half of the right-of-way adjacent to the proposed subdivision shall be included in the overall subdivision improvements. The improvements shall be made to current City specifications and standards and shall comply with the major street plan of the City of Arnold.
[R.O. 2013 App. A §51; Ord. No. 8.120 (Bill No. 421) §51, 10-9-1978]
At the time street improvements are installed, the right-of-way adjacent to the surfaced portion of the street shall be graded to allow for future construction of sidewalks on both sides of all streets. Such grading shall conform to City specifications and shall be required improvements unless a specific variance is granted. A variance from the requirement for sidewalk grading may be granted by the Planning Commission where sidewalks are not deemed necessary for public safety, or where topographical or other conditions would make their future installation and use impractical.
[R.O. 2013 App. A §52; Ord. No. 8.120 (Bill No. 1346) §1, 10-15-1992]
Street lights shall be provided within all subdivisions. Street lights shall be provided at the corner of intersections of streets, located within cul-de-sacs, and provided at intervals of approximately three hundred (300) feet throughout all residential subdivisions or as recommended by Ameren Missouri and approved by the Planning Commission and City Council. The provisions of this Section are not intended to apply to minor subdivisions. Street lighting shall be located between the sidewalk and the street and located within an easement dedicated for that purpose or within the right-of-way. Street lighting shall be installed in accordance with a lighting plan that shall be as approved by the Planning Commission and City Council. Such lighting shall meet all applicable codes. Street lighting shall be a standard model accepted by the Planning Commission and shall be uniform throughout the subdivision except that at the intersection of streets with arterial or collector streets, the Planning Commission may require the installation of the type of street light required for non-residential subdivisions. Street lights shall be dedicated to the ownership and maintenance of the subdivision and covenants shall be established that empower the trustees with the authority to assess and collect fees as necessary from the lot owners of the subdivision to pay for the cost of electrical service, rental, and the maintenance and repair of the lights. Street lighting in non-residential subdivisions shall be the same type as the lighting required by other ordinances of the City relating to street lights along arterial and collector roads and shall be provided at intervals of four hundred (400) feet. Street lights shall either be installed prior to the approval of the record plat or adequate funds shall be escrowed in accordance with the provisions of this Chapter to guaranty the installation of public improvements. Street lighting funds escrowed pursuant to the provisions of this Section may be released by the Director of Public Works to supplier of street lighting, including any deposit required therefor, as necessary for the installation of the street lighting.
[R.O. 2013 App. A §53; Ord. No. 8.120 (Bill No. 421) §53, 10-9-1978]
A. 
General Requirements. Necessary action shall be taken by the applicant to extend a water supply capable of providing domestic water use and fire protection.
1. 
The subdivider shall install adequate water facilities, including fire hydrants, subject to the specifications and approval of the appropriate water district, fire protection district, and the Planning Commission.
2. 
To facilitate the above, the location of all fire hydrants and all water supply improvements shall be shown on the preliminary plat, and the cost of installing same shall be included in the performance bond to be furnished by the developer.
B. 
The design of the water system improvements shall be coordinated to fullest extent possible with present and probable future improvements so as to form part of an integrated system.
C. 
Timing Of Improvements. To eliminate future street openings, all underground utilities for fire hydrants together with the fire hydrants themselves and all other supply improvements shall be installed before any final paving of a street shown on the subdivision plat.
[R.O. 2013 App. A §54; Ord. No. 8.120 (Bill No. 421) §54, 10-9-1978]
Storm drainage improvements consisting of storm sewers or open channels shall adequately drain the areas being developed. The design of drainage improvements shall be coordinated to the fullest extent possible with present and probably future improvements so as to form part of an integrated system. Adequate provisions shall be made for the disposal of storm water in accordance with the specifications and standards of the City of Arnold, and subject to the inspection and approval of the City Engineer.
[R.O. 2013 App. A §55; Ord. No. 8.120 (Bill No. 421) §55, 10-9-1978]
Where an approved public or privately owned sanitary sewer system is reasonably accessible, that meets the requirements of the City of Arnold and the Missouri Clean Water Commission, the developer shall connect with such sanitary sewer and provide adequate sewer lines to each lot. Sewer connections and subdivision sewer systems shall comply with the regulations of the Missouri Clean Water Commission and the City of Arnold, and shall be constructed under the observation and inspection of the City Engineer.
[R.O. 2013 App. A §56; Ord. No. 8.120 (Bill No. 421) §56, 10-9-1978]
Where an approved public or privately owned sanitary sewer is not reasonably accessible, but where plans for installation of sanitary sewers in the vicinity of the subdivision have been prepared and approved, the developer shall install sewers in conformity with such plans, although a connection to an existing main may not be immediately practicable. In such cases, and until a connection is made with an approved public or privately owned sewer system, the use of a sewage treatment facility will be permitted, provided such disposal facilities are constructed in accordance with the regulations and requirements of the Missouri Clean Water Commission and the City of Arnold and constructed under the observation and inspection of the City Engineer.
[R.O. 2013 App. A §57; Ord. No. 8.120 (Bill No. 421) §57, 10-9-1978]
Where no sewers are accessible and no plans for same have been prepared, the developer shall install sewer lines and a disposal system in accordance with the requirements of the preceding Section. If the subdivided lots have a minimum width of one hundred (100) feet and contain a minimum area of one-half (1/2) acre (twenty-one thousand seven hundred eighty (21,780) square feet) or more, he/she may instead install an individual sewage disposal system for each lot, but each such individual sewage disposal system shall comply with the regulations and requirements of the Missouri Clean Water Commission and the City of Arnold and be constructed under the observation and inspection of the Community Development Director.
[R.O. 2013 App. A §58; Ord. No. 8.120 (Bill No. 421) §58, 10-9-1978]
All electric and telephone distribution lines shall be installed underground, except those overhead distribution feeder lines necessary to serve the subdivision and in locations as approved by the Planning Commission. Cable switching enclosures, pad-mounted transformers, and service pedestals may also be installed aboveground and may be installed as a part of the street lighting standards where approved by the Planning Commission. All such distribution lines and equipment shall be installed in conformance with appropriate Public Service Commission guidelines.
[R.O. 2013 App. A §59; Ord. No. 8.120 (Bill No. 421) §59, 10-9-1978; Ord. No. 8.120 (Bill No. 1091) §§1-2, 5-4-1989]
A. 
General Requirements.
1. 
A landscaping plan shall be submitted with all improvement plans.
2. 
Any part of a lot area not used for buildings or other structures or for parking, loading, or accessways shall be landscaped with grass, ground cover, trees, shrubs, and pedestrian walks.
3. 
Landscaping shall not be a development requirement for single-family residential subdivisions.
4. 
Landscaping plants shall have a minimum one (1) year life guarantee.
B. 
Buffer Strip. Where the zoning ordinance requires buffer strips between differently zoned properties, the buffer strips shall meet the following minimum requirements:
Minimum width
15 feet
Natural vegetation
Minimum species mixture
100% coniferous
Minimum species height
6 feet
Minimum species spacing
8 feet on center
Fencing
Minimum height
6 feet
Sightproofing
Stockage/slats in cyclone fence
The Planning Commission may approve the use of topographic features in lieu of fences where such alterations will achieve comparable effect.
C. 
Subdivision Entrances. If structures or planting are proposed at the subdivision entrance, it shall be done in such a manner as not to obscure the vision of oncoming traffic.
D. 
Common Land. The Planning Commission may require the clearing of underbrush, and may require sodding or seeding on common land where the common land has been altered.
E. 
Guarantee Of Performance. The cost for the material and labor for the placement of all landscaping within a development shall be computed and the total amount escrowed in an account as specified in Section 410.400 of this Chapter. The escrow shall not be released in its entirety until one (1) year after the completion of the landscaping. If existing vegetation, which is included in the landscaping plan, dies within one (1) year after the completion of the landscaping in the development, it shall be replaced with a plant of similar species which meet the minimum landscaping requirements.
[R.O. 2013 App. A §60; Ord. No. 8.120 (Bill No. 421) §60, 10-9-1978; Ord. No. 8.120 (Bill No. 1528) §§1 — 2, 4-18-1996]
A. 
The developer shall install all street and traffic signs within the subdivision in accordance with the Manual on Uniform Traffic Control Devices (MUTCD) and City of Arnold guidelines. Signs to be installed by the developer include:
1. 
Stop signs with thermo-plastic stop bars.
2. 
Street name signs.
3. 
Speed limit signs.
4. 
No parking signs.
Location of signs shall be shown on the approved development plans.
B. 
Short Form Specification For Signs.
1. 
All signs shall be manufactured from engineer grade reflective sheeting on 0.080 aluminum plate and shall be mounted on a twelve (12) foot, three (3) pound/foot, galvanized channel post. Posts located on highway right-of-way shall conform to MHTD guidelines.
2. 
Whenever possible, street name signs are to be mounted at the top of stop signs on the same post.
3. 
Stop signs shall be twenty-four (24) inches by twenty-four (24) inches at local subdivision street intersections and shall be thirty (30) inches by thirty (30) inches at collector and arterial street intersections.
4. 
The bottom of a stop sign shall be mounted seven (7.0) feet above finished grade. Posts shall be driven on the ground to a depth of twenty-four (24) to thirty (30) inches. Should rock or other obstructions be encountered, please consult with public works.
5. 
A twenty (20) mph speed limit sign shall be mounted in each subdivision near the entrance.
6. 
Street name signs shall be manufactured from 0.080 aluminum plate with double faced green reflective surfaces, six (6) inches high by necessary length.
7. 
Stop bars shall extend from near the curb to the street centerline and shall be eighteen (18) inches wide.
8. 
Locations of no parking areas shall be determined by the City of Arnold and/or the Fire District.
[R.O. 2013 App. A §61; Ord. No. 8.120 (Bill No. 421) §61, 10-9-1978]
A. 
Purpose. The purpose of this Section is to provide a procedure whereby the construction of a display house can begin prior to the recording of the subdivision plat.
B. 
Procedure. The developer may, after receiving approval of a preliminary plat of a proposed subdivision from the Council, submit a display house plat to the Commission for review and approval. There may be three (3) display houses for every twenty (20) houses proposed, not to exceed ten (10) display houses. The display house plat shall include a complete outground survey of the proposed subdivision, and the location of each display house in relation to proposed lots. The script of said display house plat shall contain terms and conditions as required by the Commission including, but not limited, to the following:
1. 
The display house plat shall be recorded in the office of the Jefferson County Recorder of Deeds prior to issuance of a building permit for any display house.
2. 
The display house plat shall become null and void upon the recording of a record plat which established that each display house is on an approved lot.
3. 
No part of the proposed subdivision may be conveyed, nor an occupancy permit issued, for any structure therein until the display house or houses have been located on an approved lot.
4. 
If initial construction of a display house has not commenced within sixty (60) days, the Commission's approval shall lapse and the display house plat shall be null and void.
[R.O. 2013 App. A §66; Ord. No. 8.120 (Bill No. 421) §66, 10-9-1978]
This Chapter shall be in full force and effect immediately upon its passage and approval.